git.openwrt.org Git - openwrt/staging/blogic.git/log

Merge branch 'l2tp-tunnel-creation-fixes'

Guillaume Nault says:

====================
l2tp: tunnel creation fixes

L2TP tunnel creation is racy. We need to make sure that the tunnel
returned by l2tp_tunnel_create() isn't going to be freed while the
caller is using it. This is done in patch #1, by separating tunnel
creation from tunnel registration.

With the tunnel registration code in place, we can now check for
duplicate tunnels in a race-free way. This is done in patch #2, which
incidentally removes the last use of l2tp_tunnel_find().
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

l2tp: fix race in duplicate tunnel detection

We can't use l2tp_tunnel_find() to prevent l2tp_nl_cmd_tunnel_create()
from creating a duplicate tunnel. A tunnel can be concurrently
registered after l2tp_tunnel_find() returns. Therefore, searching for
duplicates must be done at registration time.

Finally, remove l2tp_tunnel_find() entirely as it isn't use anywhere
anymore.

Fixes: 309795f4bec2 ("l2tp: Add netlink control API for L2TP")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

l2tp: fix races in tunnel creation

l2tp_tunnel_create() inserts the new tunnel into the namespace's tunnel
list and sets the socket's ->sk_user_data field, before returning it to
the caller. Therefore, there are two ways the tunnel can be accessed
and freed, before the caller even had the opportunity to take a
reference. In practice, syzbot could crash the module by closing the
socket right after a new tunnel was returned to pppol2tp_create().

This patch moves tunnel registration out of l2tp_tunnel_create(), so
that the caller can safely hold a reference before publishing the
tunnel. This second step is done with the new l2tp_tunnel_register()
function, which is now responsible for associating the tunnel to its
socket and for inserting it into the namespace's list.

While moving the code to l2tp_tunnel_register(), a few modifications
have been done. First, the socket validation tests are done in a helper
function, for clarity. Also, modifying the socket is now done after
having inserted the tunnel to the namespace's tunnels list. This will
allow insertion to fail, without having to revert theses modifications
in the error path (a followup patch will check for duplicate tunnels
before insertion). Either the socket is a kernel socket which we
control, or it is a user-space socket for which we have a reference on
the file descriptor. In any case, the socket isn't going to be closed
from under us.

Reported-by: syzbot+fbeeb5c3b538e8545644@syzkaller.appspotmail.com
Fixes: fd558d186df2 ("l2tp: Split pppol2tp patch into separate l2tp and ppp parts")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>

tun: send netlink notification when the device is modified

I added dumping of link information about tun devices over netlink in
commit 1ec010e70593 ("tun: export flags, uid, gid, queue information
over netlink"), but didn't add the missing netlink notifications when
the device's exported properties change.

This patch adds notifications when owner/group or flags are modified,
when queues are attached/detached, and when a tun fd is closed.

Reported-by: Thomas Haller <thaller@redhat.com>
Fixes: 1ec010e70593 ("tun: export flags, uid, gid, queue information over netlink")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

tun: set the flags before registering the netdevice

Otherwise, register_netdevice advertises the creation of the device with
the default flags, instead of what the user requested.

Reported-by: Thomas Haller <thaller@redhat.com>
Fixes: 1ec010e70593 ("tun: export flags, uid, gid, queue information over netlink")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

lan78xx: Don't reset the interface on open

Commit 92571a1aae40 ("lan78xx: Connect phy early") moves the PHY
initialisation into lan78xx_probe, but lan78xx_open subsequently calls
lan78xx_reset. As well as forcing a second round of link negotiation,
this reset frequently prevents the phy interrupt from being generated
(even though the link is up), rendering the interface unusable.

Fix this issue by removing the lan78xx_reset call from lan78xx_open.

Fixes: 92571a1aae40 ("lan78xx: Connect phy early")
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'bnxt_en-Fixes-for-net'

Michael Chan says:

====================
bnxt_en: Fixes for net.

This bug fix series include NULL pointer fixes in ethtool -x code path
and in the error clean up path when freeing IRQs, a ring accounting bug
that missed rings used by the RDMA driver, and 3 bug fixes related to TC
Flower and VF-reps.

v2: Fixed commit message of patch 4. Changed the pound sign to $ sign
in front of the ip command.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

bnxt_en: Fix NULL pointer dereference at bnxt_free_irq().

When open fails during ethtool -L ring change, for example, the driver
may crash at bnxt_free_irq() because bp->bnapi is NULL.

If we fail to allocate all the new rings, bnxt_open_nic() will free
all the memory including bp->bnapi. Subsequent call to bnxt_close_nic()
will try to dereference bp->bnapi in bnxt_free_irq().

Fix it by checking for !bp->bnapi in bnxt_free_irq().

Fixes: e5811b8c09df ("bnxt_en: Add IRQ remapping logic.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bnxt_en: Need to include RDMA rings in bnxt_check_rings().

With recent changes to reserve both L2 and RDMA rings, we need to include
the RDMA rings in bnxt_check_rings(). Otherwise we will under-estimate
the rings we need during ethtool -L and may lead to failure.

Fixes: fbcfc8e46741 ("bnxt_en: Reserve completion rings and MSIX for bnxt_re RDMA driver.")
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bnxt_en: Support max-mtu with VF-reps

While a VF is configured with a bigger mtu (> 1500), any packets that
are punted to the VF-rep (slow-path) get dropped by OVS kernel-datapath
with the following message: "dropped over-mtu packet". Fix this by
returning the max-mtu value for a VF-rep derived from its corresponding VF.
VF-rep's mtu can be changed using 'ip' command as shown in this example:

$ ip link set bnxt0_pf0vf0 mtu 9000

Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bnxt_en: Ignore src port field in decap filter nodes

The driver currently uses src port field (along with other fields) in the
decap tunnel key, while looking up and adding tunnel nodes. This leads to
redundant cfa_decap_filter_alloc() requests to the FW and flow-miss in the
flow engine. Fix this by ignoring the src port field in decap tunnel nodes.

Fixes: f484f6782e01 ("bnxt_en: add hwrm FW cmds for cfa_encap_record and decap_filter")
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bnxt_en: do not allow wildcard matches for L2 flows

Before this patch the following commands would succeed as far as the
user was concerned:

$ tc qdisc add dev p1p1 ingress
$ tc filter add dev p1p1 parent ffff: protocol all \
flower skip_sw action drop
$ tc filter add dev p1p1 parent ffff: protocol ipv4 \
flower skip_sw src_mac 00:02:00:00:00:01/44 action drop

The current flow offload infrastructure used does not support wildcard
matching for ethernet headers, so do not allow the second or third
commands to succeed. If a user wants to drop traffic on that interface
the protocol and MAC addresses need to be specified explicitly:

$ tc qdisc add dev p1p1 ingress
$ tc filter add dev p1p1 parent ffff: protocol arp \
flower skip_sw action drop
$ tc filter add dev p1p1 parent ffff: protocol ipv4 \
flower skip_sw action drop
...
$ tc filter add dev p1p1 parent ffff: protocol ipv4 \
flower skip_sw src_mac 00:02:00:00:00:01 action drop
$ tc filter add dev p1p1 parent ffff: protocol ipv4 \
flower skip_sw src_mac 00:02:00:00:00:02 action drop
...

There are also checks for VLAN parameters in this patch as other callers
may wildcard those parameters even if tc does not. Using different
flow infrastructure could allow this to work in the future for L2 flows,
but for now it does not.

Fixes: 2ae7408fedfe ("bnxt_en: bnxt: add TC flower filter offload support")
Signed-off-by: Andy Gospodarek <gospo@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

bnxt_en: Fix ethtool -x crash when device is down.

Fix ethtool .get_rxfh() crash by checking for valid indirection table
address before copying the data.

Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'vhost-fix-vhost_vq_access_ok-log-check'

Stefan Hajnoczi says:

====================
vhost: fix vhost_vq_access_ok() log check

v3:
* Rebased onto net/master and resolved conflict [DaveM]

v2:
* Rewrote the conditional to make the vq access check clearer [Linus]
* Added Patch 2 to make the return type consistent and harder to misuse [Linus]

The first patch fixes the vhost virtqueue access check which was recently
broken. The second patch replaces the int return type with bool to prevent
future bugs.
====================

Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

vhost: return bool from *_access_ok() functions

Currently vhost *_access_ok() functions return int. This is error-prone
because there are two popular conventions:

1. 0 means failure, 1 means success
2. -errno means failure, 0 means success

Although vhost mostly uses #1, it does not do so consistently.
umem_access_ok() uses #2.

This patch changes the return type from int to bool so that false means
failure and true means success. This eliminates a potential source of
errors.

Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

vhost: fix vhost_vq_access_ok() log check

Commit d65026c6c62e7d9616c8ceb5a53b68bcdc050525 ("vhost: validate log
when IOTLB is enabled") introduced a regression.  The logic was
originally:

  if (vq->iotlb)
      return 1;
  return A && B;

After the patch the short-circuit logic for A was inverted:

  if (A || vq->iotlb)
      return A;
  return B;

This patch fixes the regression by rewriting the checks in the obvious
way, no longer returning A when vq->iotlb is non-NULL (which is hard to
understand).

Reported-by: syzbot+65a84dde0214b0387ccd@syzkaller.appspotmail.com
Cc: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

vhost: Fix vhost_copy_to_user()

vhost_copy_to_user is used to copy vring used elements to userspace.
We should use VHOST_ADDR_USED instead of VHOST_ADDR_DESC.

Fixes: f88949138058 ("vhost: introduce O(1) vq metadata cache")
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'Aquantia-atlantic-critical-fixes-04-2018'

Igor Russkikh says:

====================
Aquantia atlantic critical fixes 04/2018

Two regressions on latest 4.16 driver reported by users

Some of old FW (1.5.44) had a link management logic which prevents
driver to make clean reset. Driver of 4.16 has a full hardware reset
implemented and that broke the link and traffic on such a cards.

Second is oops on shutdown callback in case interface is already
closed or was never opened.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

net: aquantia: oops when shutdown on already stopped device

In case netdev is closed at the moment of pci shutdown, aq_nic_stop
gets called second time. napi_disable in that case hangs indefinitely.
In other case, if device was never opened at all, we get oops because
of null pointer access.

We should invoke aq_nic_stop conditionally, only if device is running
at the moment of shutdown.

Reported-by: David Arcari <darcari@redhat.com>
Fixes: 90869ddfefeb ("net: aquantia: Implement pci shutdown callback")
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: aquantia: Regression on reset with 1.x firmware

On ASUS XG-C100C with 1.5.44 firmware a special mode called "dirty wake"
is active. With this mode when motherboard gets powered (but no poweron
happens yet), NIC automatically enables powersave link and watches
for WOL packet.
This normally allows to powerup the PC after AC power failures.

Not all motherboards or bios settings gives power to PCI slots,
so this mode is not enabled on all the hardware.

4.16 linux driver introduced full hardware reset sequence
This is required since before that we had no NIC hardware
reset implemented and there were side effects of "not clean start".

But this full reset is incompatible with "dirty wake" WOL feature
it keeps the PHY link in a special mode forever. As a consequence,
driver sees no link and no traffic.

To fix this we forcibly change FW state to idle state before doing
the full reset. This makes FW to restore link state.

Fixes: c8c82eb net: aquantia: Introduce global AQC hardware reset sequence
Signed-off-by: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

cdc_ether: flag the Cinterion AHS8 modem by gemalto as WWAN

The Cinterion AHS8 is a 3G device with one embedded WWAN interface
using cdc_ether as a driver.

The modem is controlled via AT commands through the exposed TTYs.

AT+CGDCONT write command can be used to activate or deactivate a WWAN
connection for a PDP context defined with the same command. UE
supports one WWAN adapter.

Signed-off-by: Bassem Boubaker <bassem.boubaker@actia.fr>
Acked-by: Oliver Neukum <oneukum@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

slip: Check if rstate is initialized before uncompressing

On receiving a packet the state index points to the rstate which must be
used to fill up IP and TCP headers. But if the state index points to a
rstate which is unitialized, i.e. filled with zeros, it gets stuck in an
infinite loop inside ip_fast_csum trying to compute the ip checsum of a
header with zero length.

89.666953:   <2> [<ffffff9dd3e94d38>] slhc_uncompress+0x464/0x468
89.666965:   <2> [<ffffff9dd3e87d88>] ppp_receive_nonmp_frame+0x3b4/0x65c
89.666978:   <2> [<ffffff9dd3e89dd4>] ppp_receive_frame+0x64/0x7e0
89.666991:   <2> [<ffffff9dd3e8a708>] ppp_input+0x104/0x198
89.667005:   <2> [<ffffff9dd3e93868>] pppopns_recv_core+0x238/0x370
89.667027:   <2> [<ffffff9dd4428fc8>] __sk_receive_skb+0xdc/0x250
89.667040:   <2> [<ffffff9dd3e939e4>] pppopns_recv+0x44/0x60
89.667053:   <2> [<ffffff9dd4426848>] __sock_queue_rcv_skb+0x16c/0x24c
89.667065:   <2> [<ffffff9dd4426954>] sock_queue_rcv_skb+0x2c/0x38
89.667085:   <2> [<ffffff9dd44f7358>] raw_rcv+0x124/0x154
89.667098:   <2> [<ffffff9dd44f7568>] raw_local_deliver+0x1e0/0x22c
89.667117:   <2> [<ffffff9dd44c8ba0>] ip_local_deliver_finish+0x70/0x24c
89.667131:   <2> [<ffffff9dd44c92f4>] ip_local_deliver+0x100/0x10c

./scripts/faddr2line vmlinux slhc_uncompress+0x464/0x468 output:
ip_fast_csum at arch/arm64/include/asm/checksum.h:40
(inlined by) slhc_uncompress at drivers/net/slip/slhc.c:615

Adding a variable to indicate if the current rstate is initialized. If
such a packet arrives, move to toss state.

Signed-off-by: Tejaswi Tanikella <tejaswit@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

lan78xx: Avoid spurious kevent 4 "error"

lan78xx_defer_event generates an error message whenever the work item
is already scheduled. lan78xx_open defers three events -
EVENT_STAT_UPDATE, EVENT_DEV_OPEN and EVENT_LINK_RESET. Being aware
of the likelihood (or certainty) of an error message, the DEV_OPEN
event is added to the set of pending events directly, relying on
the subsequent deferral of the EVENT_LINK_RESET call to schedule the
work. Take the same precaution with EVENT_STAT_UPDATE to avoid a
totally unnecessary error message.

Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

lan78xx: Correctly indicate invalid OTP

lan78xx_read_otp tries to return -EINVAL in the event of invalid OTP
content, but the value gets overwritten before it is returned and the
read goes ahead anyway. Make the read conditional as it should be
and preserve the error code.

Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver")
Signed-off-by: Phil Elwell <phil@raspberrypi.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

rds: MP-RDS may use an invalid c_path

rds_sendmsg() calls rds_send_mprds_hash() to find a c_path to use to
send a message.  Suppose the RDS connection is not yet up.  In
rds_send_mprds_hash(), it does

if (conn->c_npaths == 0)
wait_event_interruptible(conn->c_hs_waitq,
(conn->c_npaths != 0));

If it is interrupted before the connection is set up,
rds_send_mprds_hash() will return a non-zero hash value.  Hence
rds_sendmsg() will use a non-zero c_path to send the message.  But if
the RDS connection ends up to be non-MP capable, the message will be
lost as only the zero c_path can be used.

Signed-off-by: Ka-Cheong Poon <ka-cheong.poon@oracle.com>
Acked-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ip_gre: clear feature flags when incompatible o_flags are set

Commit dd9d598c6657 ("ip_gre: add the support for i/o_flags update via
netlink") added the ability to change o_flags, but missed that the
GSO/LLTX features are disabled by default, and only enabled some gre
features are unused. Thus we also need to disable the GSO/LLTX features
on the device when the TUNNEL_SEQ or TUNNEL_CSUM flags are set.

These two examples should result in the same features being set:

    ip link add gre_none type gre local 192.168.0.10 remote 192.168.0.20 ttl 255 key 0

    ip link set gre_none type gre seq
    ip link add gre_seq type gre local 192.168.0.10 remote 192.168.0.20 ttl 255 key 1 seq

Fixes: dd9d598c6657 ("ip_gre: add the support for i/o_flags update via netlink")
Signed-off-by: Sabrina Dubroca <sd@queasysnail.net>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Acked-by: William Tu <u9012063@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

1) The sockmap code has to free socket memory on close if there is
    corked data, from John Fastabend.

2) Tunnel names coming from userspace need to be length validated. From
    Eric Dumazet.

3) arp_filter() has to take VRFs properly into account, from Miguel
    Fadon Perlines.

4) Fix oops in error path of tcf_bpf_init(), from Davide Caratti.

5) Missing idr_remove() in u32_delete_key(), from Cong Wang.

6) More syzbot stuff. Several use of uninitialized value fixes all
    over, from Eric Dumazet.

7) Do not leak kernel memory to userspace in sctp, also from Eric
    Dumazet.

8) Discard frames from unused ports in DSA, from Andrew Lunn.

9) Fix DMA mapping and reset/failover problems in ibmvnic, from Thomas
    Falcon.

10) Do not access dp83640 PHY registers prematurely after reset, from
    Esben Haabendal.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (46 commits)
  vhost-net: set packet weight of tx polling to 2 * vq size
  net: thunderx: rework mac addresses list to u64 array
  inetpeer: fix uninit-value in inet_getpeer
  dp83640: Ensure against premature access to PHY registers after reset
  devlink: convert occ_get op to separate registration
  ARM: dts: ls1021a: Specify TBIPA register address
  net/fsl_pq_mdio: Allow explicit speficition of TBIPA address
  ibmvnic: Do not reset CRQ for Mobility driver resets
  ibmvnic: Fix failover case for non-redundant configuration
  ibmvnic: Fix reset scheduler error handling
  ibmvnic: Zero used TX descriptor counter on reset
  ibmvnic: Fix DMA mapping mistakes
  tipc: use the right skb in tipc_sk_fill_sock_diag()
  sctp: sctp_sockaddr_af must check minimal addr length for AF_INET6
  net: dsa: Discard frames from unused ports
  sctp: do not leak kernel memory to user space
  soreuseport: initialise timewait reuseport field
  ipv4: fix uninit-value in ip_route_output_key_hash_rcu()
  dccp: initialize ireq->ir_mark
  net: fix uninit-value in __hw_addr_add_ex()
  ...

Merge branch 'work.namei' of git://git./linux/kernel/git/viro/vfs

Pull vfs namei updates from Al Viro:

- make lookup_one_len() safe with parent locked only shared(incoming
   afs series wants that)

- fix of getname_kernel() regression from 2015 (-stable fodder, that
   one).

* 'work.namei' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  getname_kernel() needs to make sure that ->name != ->iname in long case
  make lookup_one_len() safe to use with directory locked shared
  new helper: __lookup_slow()
  merge common parts of lookup_one_len{,_unlocked} into common helper

Merge tag 'for-linus-4.17-ofs' of git://git./linux/kernel/git/hubcap/linux

Pull orangefs updates from Mike Marshall:
"Fixes and cleanups:

   - Documentation cleanups

   - removal of unused code

   - make some structs static

   - implement Orangefs vm_operations fault callout

   - eliminate two single-use functions and put their cleaned up code in
     line.

   - replace a vmalloc/memset instance with vzalloc

   - fix a race condition bug in wait code"

* tag 'for-linus-4.17-ofs' of git://git.kernel.org/pub/scm/linux/kernel/git/hubcap/linux:
  Orangefs: documentation updates
  orangefs: document package install and xfstests procedure
  orangefs: remove unused code
  orangefs: make several *_operations structs static
  orangefs: implement vm_ops->fault
  orangefs: open code short single-use functions
  orangefs: replace vmalloc and memset with vzalloc
  orangefs: bug fix for a race condition when getting a slot

Merge tag 'pstore-v4.17-rc1-fix' of git://git./linux/kernel/git/kees/linux

Pull pstore fix from Kees Cook:
"Fix another compression Kconfig combination missed in testing (Tobias
Regnery)"

* tag 'pstore-v4.17-rc1-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
pstore: fix crypto dependencies without compression

selinux: fix missing dput() before selinuxfs unmount

Commit 0619f0f5e36f ("selinux: wrap selinuxfs state") triggers a BUG
when SELinux is runtime-disabled (i.e. systemd or equivalent disables
SELinux before initial policy load via /sys/fs/selinux/disable based on
/etc/selinux/config SELINUX=disabled).

This does not manifest if SELinux is disabled via kernel command line
argument or if SELinux is enabled (permissive or enforcing).

Before:
  SELinux:  Disabled at runtime.
  BUG: Dentry 000000006d77e5c7{i=17,n=null}  still in use (1) [unmount of selinuxfs selinuxfs]

After:
  SELinux:  Disabled at runtime.

Fixes: 0619f0f5e36f ("selinux: wrap selinuxfs state")
Reported-by: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp>
Reported-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge tag 'for-linus' of git://git./virt/kvm/kvm

Pull kvm updates from Paolo Bonzini:
"ARM:
   - VHE optimizations

   - EL2 address space randomization

   - speculative execution mitigations ("variant 3a", aka execution past
     invalid privilege register access)

   - bugfixes and cleanups

  PPC:
   - improvements for the radix page fault handler for HV KVM on POWER9

  s390:
   - more kvm stat counters

   - virtio gpu plumbing

   - documentation

   - facilities improvements

  x86:
   - support for VMware magic I/O port and pseudo-PMCs

   - AMD pause loop exiting

   - support for AMD core performance extensions

   - support for synchronous register access

   - expose nVMX capabilities to userspace

   - support for Hyper-V signaling via eventfd

   - use Enlightened VMCS when running on Hyper-V

   - allow userspace to disable MWAIT/HLT/PAUSE vmexits

   - usual roundup of optimizations and nested virtualization bugfixes

  Generic:
   - API selftest infrastructure (though the only tests are for x86 as
     of now)"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (174 commits)
  kvm: x86: fix a prototype warning
  kvm: selftests: add sync_regs_test
  kvm: selftests: add API testing infrastructure
  kvm: x86: fix a compile warning
  KVM: X86: Add Force Emulation Prefix for "emulate the next instruction"
  KVM: X86: Introduce handle_ud()
  KVM: vmx: unify adjacent #ifdefs
  x86: kvm: hide the unused 'cpu' variable
  KVM: VMX: remove bogus WARN_ON in handle_ept_misconfig
  Revert "KVM: X86: Fix SMRAM accessing even if VM is shutdown"
  kvm: Add emulation for movups/movupd
  KVM: VMX: raise internal error for exception during invalid protected mode state
  KVM: nVMX: Optimization: Dont set KVM_REQ_EVENT when VMExit with nested_run_pending
  KVM: nVMX: Require immediate-exit when event reinjected to L2 and L1 event pending
  KVM: x86: Fix misleading comments on handling pending exceptions
  KVM: x86: Rename interrupt.pending to interrupt.injected
  KVM: VMX: No need to clear pending NMI/interrupt on inject realmode interrupt
  x86/kvm: use Enlightened VMCS when running on Hyper-V
  x86/hyper-v: detect nested features
  x86/hyper-v: define struct hv_enlightened_vmcs and clean field bits
  ...

Fix subtle macro variable shadowing in min_not_zero()

Commit 3c8ba0d61d04 ("kernel.h: Retain constant expression output for
max()/min()") rewrote our min/max macros to be very clever, but in the
meantime resurrected a variable name shadow issue that we had had
previously fixed in commit 589a9785ee3a ("min/max: remove sparse
warnings when they're nested").

That commit talks about the sparse warnings that this shadowing causes,
which we ignored as just a minor annoyance.  But it turns out that the
sparse warning is the least of our problems.  We actually have a real
bug due to the shadowing through the interaction with "min_not_zero()",
which ends up doing

   min(__x, __y)

internally, and then the new declaration of "__x" and "__y" as new
variables in __cmp_once() results in a complete mess of an expression,
and "min_not_zero()" doesn't work at all.

For some odd reason, this only ever caused (reported) problems on s390,
even though it is a generic issue and most of the (obviously successful)
testing of the problematic commit had happened on other architectures.

Quoting Sebastian Ott:
"What happened is that the bio build by the partition detection code
  was attempted to be split by the block layer because the block queue
  had a max_sector setting of 0. blk_queue_max_hw_sectors uses
  min_not_zero."

So re-introduce the use of __UNIQUE_ID() to make sure that the min/max
macros do not have these kinds of clashes.

[ That said, __UNIQUE_ID() itself has several issues that make it less
  than wonderful.

  In particular, the "uniqueness" has a fallback on the line number,
  which means that it's not actually unique in more complex cases if you
  don't build with gcc or clang (which have working unique counters that
  aren't tied to line numbers).

  That historical broken fallback also means that we have that pointless
  "prefix" argument that doesn't actually make much sense _except_ for
  the known-broken case. Oh well. ]

Fixes: 3c8ba0d61d04 ("kernel.h: Retain constant expression output for max()/min()")
Reported-and-tested-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge branch 'for-linus-sa1100' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM SA1100 updates from Russell King:
"We have support for arbitary MMIO registers providing platform GPIOs,
  which allows us to abstract some of the SA11x0 CF support.

  This set of updates makes that change"

* 'for-linus-sa1100' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: sa1100/simpad: switch simpad CF to use gpiod APIs
  ARM: sa1100/shannon: convert to generic CF sockets
  ARM: sa1100/nanoengine: convert to generic CF sockets
  ARM: sa1100/h3xxx: switch h3xxx PCMCIA to use gpiod APIs
  ARM: sa1100/cerf: convert to generic CF sockets
  ARM: sa1100/assabet: convert to generic CF sockets
  ARM: sa1100: provide infrastructure to support generic CF sockets
  pcmcia: sa1100: provide generic CF support

Merge branch 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm

Pull ARM updates from Russell King:
"A number of core ARM changes:

   - Refactoring linker script by Nicolas Pitre

   - Enable source fortification

   - Add support for Cortex R8"

* 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
  ARM: decompressor: fix warning introduced in fortify patch
  ARM: 8751/1: Add support for Cortex-R8 processor
  ARM: 8749/1: Kconfig: Add ARCH_HAS_FORTIFY_SOURCE
  ARM: simplify and fix linker script for TCM
  ARM: linker script: factor out TCM bits
  ARM: linker script: factor out vectors and stubs
  ARM: linker script: factor out unwinding table sections
  ARM: linker script: factor out stuff for the .text section
  ARM: linker script: factor out stuff for the DISCARD section
  ARM: linker script: factor out some common definitions between XIP and non-XIP

Merge branch 'for-next' of git://git./linux/kernel/git/gerg/m68knommu

Pull m68knommu update from Greg Ungerer:
"Only a single fix to set the DMA masks in the ColdFire FEC platform
  data structure.

  This stops the warning from dma-mapping.h at boot time"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
  m68k: set dma and coherent masks for platform FEC ethernets

Merge branch 'for-linus' of git://git./linux/kernel/git/mattst88/alpha

Pull alpha updates from Matt Turner:
"A few small changes for alpha"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha:
  alpha: io: reorder barriers to guarantee writeX() and iowriteX() ordering
  alpha: Implement CPU vulnerabilities sysfs functions.
  alpha: rtc: stop validating rtc_time in .read_time
  alpha: rtc: remove unused set_mmss ops

Merge branch 'for-linus' of git://git./linux/kernel/git/s390/linux

Pull s390 updates from Martin Schwidefsky:

- Improvements for the spectre defense:
    * The spectre related code is consolidated to a single file
      nospec-branch.c
    * Automatic enable/disable for the spectre v2 defenses (expoline vs.
      nobp)
    * Syslog messages for specve v2 are added
    * Enable CONFIG_GENERIC_CPU_VULNERABILITIES and define the attribute
      functions for spectre v1 and v2

- Add helper macros for assembler alternatives and use them to shorten
   the code in entry.S.

- Add support for persistent configuration data via the SCLP Store Data
   interface. The H/W interface requires a page table that uses 4K pages
   only, the code to setup such an address space is added as well.

- Enable virtio GPU emulation in QEMU. To do this the depends
   statements for a few common Kconfig options are modified.

- Add support for format-3 channel path descriptors and add a binary
   sysfs interface to export the associated utility strings.

- Add a sysfs attribute to control the IFCC handling in case of
   constant channel errors.

- The vfio-ccw changes from Cornelia.

- Bug fixes and cleanups.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (40 commits)
  s390/kvm: improve stack frame constants in entry.S
  s390/lpp: use assembler alternatives for the LPP instruction
  s390/entry.S: use assembler alternatives
  s390: add assembler macros for CPU alternatives
  s390: add sysfs attributes for spectre
  s390: report spectre mitigation via syslog
  s390: add automatic detection of the spectre defense
  s390: move nobp parameter functions to nospec-branch.c
  s390/cio: add util_string sysfs attribute
  s390/chsc: query utility strings via fmt3 channel path descriptor
  s390/cio: rename struct channel_path_desc
  s390/cio: fix unbind of io_subchannel_driver
  s390/qdio: split up CCQ handling for EQBS / SQBS
  s390/qdio: don't retry EQBS after CCQ 96
  s390/qdio: restrict buffer merging to eligible devices
  s390/qdio: don't merge ERROR output buffers
  s390/qdio: simplify math in get_*_buffer_frontier()
  s390/decompressor: trim uncompressed image head during the build
  s390/crypto: Fix kernel crash on aes_s390 module remove.
  s390/defkeymap: fix global init to zero
  ...

vhost-net: set packet weight of tx polling to 2 * vq size

handle_tx will delay rx for tens or even hundreds of milliseconds when tx busy
polling udp packets with small length(e.g. 1byte udp payload), because setting
VHOST_NET_WEIGHT takes into account only sent-bytes but no single packet length.

Ping-Latencies shown below were tested between two Virtual Machines using
netperf (UDP_STREAM, len=1), and then another machine pinged the client:

vq size=256
Packet-Weight   Ping-Latencies(millisecond)
                   min      avg       max
Origin           3.319   18.489    57.303
64               1.643    2.021     2.552
128              1.825    2.600     3.224
256              1.997    2.710     4.295
512              1.860    3.171     4.631
1024             2.002    4.173     9.056
2048             2.257    5.650     9.688
4096             2.093    8.508    15.943

vq size=512
Packet-Weight   Ping-Latencies(millisecond)
                   min      avg       max
Origin           6.537   29.177    66.245
64               2.798    3.614     4.403
128              2.861    3.820     4.775
256              3.008    4.018     4.807
512              3.254    4.523     5.824
1024             3.079    5.335     7.747
2048             3.944    8.201    12.762
4096             4.158   11.057    19.985

Seems pretty consistent, a small dip at 2 VQ sizes.
Ring size is a hint from device about a burst size it can tolerate. Based on
benchmarks, set the weight to 2 * vq size.

To evaluate this change, another tests were done using netperf(RR, TX) between
two machines with Intel(R) Xeon(R) Gold 6133 CPU @ 2.50GHz, and vq size was
tweaked through qemu. Results shown below does not show obvious changes.

vq size=256 TCP_RR                vq size=512 TCP_RR
size/sessions/+thu%/+normalize%   size/sessions/+thu%/+normalize%
   1/       1/  -7%/        -2%      1/       1/   0%/        -2%
   1/       4/  +1%/         0%      1/       4/  +1%/         0%
   1/       8/  +1%/        -2%      1/       8/   0%/        +1%
  64/       1/  -6%/         0%     64/       1/  +7%/        +3%
  64/       4/   0%/        +2%     64/       4/  -1%/        +1%
  64/       8/   0%/         0%     64/       8/  -1%/        -2%
256/       1/  -3%/        -4%    256/       1/  -4%/        -2%
256/       4/  +3%/        +4%    256/       4/  +1%/        +2%
256/       8/  +2%/         0%    256/       8/  +1%/        -1%

vq size=256 UDP_RR                vq size=512 UDP_RR
size/sessions/+thu%/+normalize%   size/sessions/+thu%/+normalize%
   1/       1/  -5%/        +1%      1/       1/  -3%/        -2%
   1/       4/  +4%/        +1%      1/       4/  -2%/        +2%
   1/       8/  -1%/        -1%      1/       8/  -1%/         0%
  64/       1/  -2%/        -3%     64/       1/  +1%/        +1%
  64/       4/  -5%/        -1%     64/       4/  +2%/         0%
  64/       8/   0%/        -1%     64/       8/  -2%/        +1%
256/       1/  +7%/        +1%    256/       1/  -7%/         0%
256/       4/  +1%/        +1%    256/       4/  -3%/        -4%
256/       8/  +2%/        +2%    256/       8/  +1%/        +1%

vq size=256 TCP_STREAM            vq size=512 TCP_STREAM
size/sessions/+thu%/+normalize%   size/sessions/+thu%/+normalize%
  64/       1/   0%/        -3%     64/       1/   0%/         0%
  64/       4/  +3%/        -1%     64/       4/  -2%/        +4%
  64/       8/  +9%/        -4%     64/       8/  -1%/        +2%
256/       1/  +1%/        -4%    256/       1/  +1%/        +1%
256/       4/  -1%/        -1%    256/       4/  -3%/         0%
256/       8/  +7%/        +5%    256/       8/  -3%/         0%
512/       1/  +1%/         0%    512/       1/  -1%/        -1%
512/       4/  +1%/        -1%    512/       4/   0%/         0%
512/       8/  +7%/        -5%    512/       8/  +6%/        -1%
1024/       1/   0%/        -1%   1024/       1/   0%/        +1%
1024/       4/  +3%/         0%   1024/       4/  +1%/         0%
1024/       8/  +8%/        +5%   1024/       8/  -1%/         0%
2048/       1/  +2%/        +2%   2048/       1/  -1%/         0%
2048/       4/  +1%/         0%   2048/       4/   0%/        -1%
2048/       8/  -2%/         0%   2048/       8/   5%/        -1%
4096/       1/  -2%/         0%   4096/       1/  -2%/         0%
4096/       4/  +2%/         0%   4096/       4/   0%/         0%
4096/       8/  +9%/        -2%   4096/       8/  -5%/        -1%

Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Haibin Zhang <haibinzhang@tencent.com>
Signed-off-by: Yunfang Tai <yunfangtai@tencent.com>
Signed-off-by: Lidong Chen <lidongchen@tencent.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: thunderx: rework mac addresses list to u64 array

It is too expensive to pass u64 values via linked list, instead
allocate array for them by overall number of mac addresses from netdev.

This eventually removes multiple kmalloc() calls, aviod memory
fragmentation and allow to put single null check on kmalloc
return value in order to prevent a potential null pointer dereference.

Addresses-Coverity-ID: 1467429 ("Dereference null return value")
Fixes: 37c3347eb247 ("net: thunderx: add ndo_set_rx_mode callback implementation for VF")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Vadim Lomovtsev <Vadim.Lomovtsev@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

inetpeer: fix uninit-value in inet_getpeer

syzbot/KMSAN reported that p->dtime was read while it was
not yet initialized in :

delta = (__u32)jiffies - p->dtime;
if (delta < ttl || !refcount_dec_if_one(&p->refcnt))
gc_stack[i] = NULL;

This is a false positive, because the inetpeer wont be erased
from rb-tree if the refcount_dec_if_one(&p->refcnt) does not
succeed. And this wont happen before first inet_putpeer() call
for this inetpeer has been done, and ->dtime field is written
exactly before the refcount_dec_and_test(&p->refcnt).

The KMSAN report was :

BUG: KMSAN: uninit-value in inet_peer_gc net/ipv4/inetpeer.c:163 [inline]
BUG: KMSAN: uninit-value in inet_getpeer+0x1567/0x1e70 net/ipv4/inetpeer.c:228
CPU: 0 PID: 9494 Comm: syz-executor5 Not tainted 4.16.0+ #82
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
__msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
inet_peer_gc net/ipv4/inetpeer.c:163 [inline]
inet_getpeer+0x1567/0x1e70 net/ipv4/inetpeer.c:228
inet_getpeer_v4 include/net/inetpeer.h:110 [inline]
icmpv4_xrlim_allow net/ipv4/icmp.c:330 [inline]
icmp_send+0x2b44/0x3050 net/ipv4/icmp.c:725
ip_options_compile+0x237c/0x29f0 net/ipv4/ip_options.c:472
ip_rcv_options net/ipv4/ip_input.c:284 [inline]
ip_rcv_finish+0xda8/0x16d0 net/ipv4/ip_input.c:365
NF_HOOK include/linux/netfilter.h:288 [inline]
ip_rcv+0x119d/0x16f0 net/ipv4/ip_input.c:493
__netif_receive_skb_core+0x47cf/0x4a80 net/core/dev.c:4562
__netif_receive_skb net/core/dev.c:4627 [inline]
netif_receive_skb_internal+0x49d/0x630 net/core/dev.c:4701
netif_receive_skb+0x230/0x240 net/core/dev.c:4725
tun_rx_batched drivers/net/tun.c:1555 [inline]
tun_get_user+0x6d88/0x7580 drivers/net/tun.c:1962
tun_chr_write_iter+0x1d4/0x330 drivers/net/tun.c:1990
do_iter_readv_writev+0x7bb/0x970 include/linux/fs.h:1776
do_iter_write+0x30d/0xd40 fs/read_write.c:932
vfs_writev fs/read_write.c:977 [inline]
do_writev+0x3c9/0x830 fs/read_write.c:1012
SYSC_writev+0x9b/0xb0 fs/read_write.c:1085
SyS_writev+0x56/0x80 fs/read_write.c:1082
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455111
RSP: 002b:00007fae0365cba0 EFLAGS: 00000293 ORIG_RAX: 0000000000000014
RAX: ffffffffffffffda RBX: 000000000000002e RCX: 0000000000455111
RDX: 0000000000000001 RSI: 00007fae0365cbf0 RDI: 00000000000000fc
RBP: 0000000020000040 R08: 00000000000000fc R09: 0000000000000000
R10: 000000000000002e R11: 0000000000000293 R12: 00000000ffffffff
R13: 0000000000000658 R14: 00000000006fc8e0 R15: 0000000000000000

Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188
kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314
kmem_cache_alloc+0xaab/0xb90 mm/slub.c:2756
inet_getpeer+0xed8/0x1e70 net/ipv4/inetpeer.c:210
inet_getpeer_v4 include/net/inetpeer.h:110 [inline]
ip4_frag_init+0x4d1/0x740 net/ipv4/ip_fragment.c:153
inet_frag_alloc net/ipv4/inet_fragment.c:369 [inline]
inet_frag_create net/ipv4/inet_fragment.c:385 [inline]
inet_frag_find+0x7da/0x1610 net/ipv4/inet_fragment.c:418
ip_find net/ipv4/ip_fragment.c:275 [inline]
ip_defrag+0x448/0x67a0 net/ipv4/ip_fragment.c:676
ip_check_defrag+0x775/0xda0 net/ipv4/ip_fragment.c:724
packet_rcv_fanout+0x2a8/0x8d0 net/packet/af_packet.c:1447
deliver_skb net/core/dev.c:1897 [inline]
deliver_ptype_list_skb net/core/dev.c:1912 [inline]
__netif_receive_skb_core+0x314a/0x4a80 net/core/dev.c:4545
__netif_receive_skb net/core/dev.c:4627 [inline]
netif_receive_skb_internal+0x49d/0x630 net/core/dev.c:4701
netif_receive_skb+0x230/0x240 net/core/dev.c:4725
tun_rx_batched drivers/net/tun.c:1555 [inline]
tun_get_user+0x6d88/0x7580 drivers/net/tun.c:1962
tun_chr_write_iter+0x1d4/0x330 drivers/net/tun.c:1990
do_iter_readv_writev+0x7bb/0x970 include/linux/fs.h:1776
do_iter_write+0x30d/0xd40 fs/read_write.c:932
vfs_writev fs/read_write.c:977 [inline]
do_writev+0x3c9/0x830 fs/read_write.c:1012
SYSC_writev+0x9b/0xb0 fs/read_write.c:1085
SyS_writev+0x56/0x80 fs/read_write.c:1082
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branches 'devel-stable' and 'misc' into for-linus

dp83640: Ensure against premature access to PHY registers after reset

The datasheet specifies a 3uS pause after performing a software
reset. The default implementation of genphy_soft_reset() does not
provide this, so implement soft_reset with the needed pause.

Signed-off-by: Esben Haabendal <eha@deif.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge git://git./pub/scm/linux/kernel/git/bpf/bpf

Daniel Borkmann says:

====================
pull-request: bpf 2018-04-09

The following pull-request contains BPF updates for your *net* tree.

The main changes are:

1) Two sockmap fixes: i) fix a potential warning when a socket with
   pending cork data is closed by freeing the memory right when the
   socket is closed instead of seeing still outstanding memory at
   garbage collector time, ii) fix a NULL pointer deref in case of
   duplicates release calls, so make sure to only reset the sk_prot
   pointer when it's in a valid state to do so, both from John.

2) Fix a compilation warning in bpf_prog_attach_check_attach_type()
   by moving the function under CONFIG_CGROUP_BPF ifdef since only
   used there, from Anders.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'for-upstream' of git://git./linux/kernel/git/bluetooth/bluetooth

Johan Hedberg says:

====================
pull request: bluetooth 2018-04-08

Here's one important Bluetooth fix for the 4.17-rc series that's needed
to pass several Bluetooth qualification test cases.

Let me know if there are any issues pulling. Thanks.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

devlink: convert occ_get op to separate registration

This resolves race during initialization where the resources with
ops are registered before driver and the structures used by occ_get
op is initialized. So keep occ_get callbacks registered only when
all structs are initialized.

The example flows, as it is in mlxsw:
1) driver load/asic probe:
   mlxsw_core
      -> mlxsw_sp_resources_register
        -> mlxsw_sp_kvdl_resources_register
          -> devlink_resource_register IDX
   mlxsw_spectrum
      -> mlxsw_sp_kvdl_init
        -> mlxsw_sp_kvdl_parts_init
          -> mlxsw_sp_kvdl_part_init
            -> devlink_resource_size_get IDX (to get the current setup
                                              size from devlink)
        -> devlink_resource_occ_get_register IDX (register current
                                                  occupancy getter)
2) reload triggered by devlink command:
  -> mlxsw_devlink_core_bus_device_reload
    -> mlxsw_sp_fini
      -> mlxsw_sp_kvdl_fini
-> devlink_resource_occ_get_unregister IDX
    (struct mlxsw_sp *mlxsw_sp is freed at this point, call to occ get
     which is using mlxsw_sp would cause use-after free)
    -> mlxsw_sp_init
      -> mlxsw_sp_kvdl_init
        -> mlxsw_sp_kvdl_parts_init
          -> mlxsw_sp_kvdl_part_init
            -> devlink_resource_size_get IDX (to get the current setup
                                              size from devlink)
        -> devlink_resource_occ_get_register IDX (register current
                                                  occupancy getter)

Fixes: d9f9b9a4d05f ("devlink: Add support for resource abstraction")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ARM: dts: ls1021a: Specify TBIPA register address

The current (mildly evil) fsl_pq_mdio code uses an undocumented shadow of
the TBIPA register on LS1021A, which happens to be read-only.
Changing TBI PHY address therefore does not work on LS1021A.

The real (and documented) address of the TBIPA registere lies in the eTSEC
block and not in MDIO/MII, which is read/write, so using that fixes
the problem.

Signed-off-by: Esben Haabendal <eha@deif.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net/fsl_pq_mdio: Allow explicit speficition of TBIPA address

This introduces a simpler and generic method for for finding (and mapping)
the TBIPA register.

Instead of relying of complicated logic for finding the TBIPA register
address based on the MDIO or MII register block base
address, which even in some cases relies on undocumented shadow registers,
a second "reg" entry for the mdio bus devicetree node specifies the TBIPA
register.

Backwards compatibility is kept, as the existing logic is applied when
only a single "reg" mapping is specified.

Signed-off-by: Esben Haabendal <eha@deif.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'ibmvnic-Fix-driver-reset-and-DMA-bugs'

Thomas Falcon says:

====================
ibmvnic: Fix driver reset and DMA bugs

This patch series introduces some fixes to the driver reset
routines and a patch that fixes mistakes caught by the kernel
DMA debugger.

The reset fixes include a fix to reset TX queue counters properly
after a reset as well as updates to driver reset error-handling code.
It also provides updates to the reset handling routine for redundant
backing VF failover and partition migration cases.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

ibmvnic: Do not reset CRQ for Mobility driver resets

When resetting the ibmvnic driver after a partition migration occurs
there is no requirement to do a reset of the main CRQ. The current
driver code does the required re-enable of the main CRQ, then does
a reset of the main CRQ later.

What we should be doing for a driver reset after a migration is to
re-enable the main CRQ, release all the sub-CRQs, and then allocate
new sub-CRQs after capability negotiation.

This patch updates the handling of mobility resets to do the proper
work and not reset the main CRQ. To do this the initialization/reset
of the main CRQ had to be moved out of the ibmvnic_init routine
and in to the ibmvnic_probe and do_reset routines.

Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ibmvnic: Fix failover case for non-redundant configuration

There is a failover case for a non-redundant pseries VNIC
configuration that was not being handled properly. The current
implementation assumes that the driver will always have a redandant
device to communicate with following a failover notification. There
are cases, however, when a non-redundant configuration can receive
a failover request. If that happens, the driver should wait until
it receives a signal that the device is ready for operation.

The driver is agnostic of its backing hardware configuration,
so this fix necessarily affects all device failover management.
The driver needs to wait until it receives a signal that the device
is ready for resetting. A flag is introduced to track this intermediary
state where the driver is waiting for an active device.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ibmvnic: Fix reset scheduler error handling

In some cases, if the driver is waiting for a reset following
a device parameter change, failure to schedule a reset can result
in a hang since a completion signal is never sent.

If the device configuration is being altered by a tool such
as ethtool or ifconfig, it could cause the console to hang
if the reset request does not get scheduled. Add some additional
error handling code to exit the wait_for_completion if there is
one in progress.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ibmvnic: Zero used TX descriptor counter on reset

The counter that tracks used TX descriptors pending completion
needs to be zeroed as part of a device reset. This change fixes
a bug causing transmit queues to be stopped unnecessarily and in
some cases a transmit queue stall and timeout reset. If the counter
is not reset, the remaining descriptors will not be "removed",
effectively reducing queue capacity. If the queue is over half full,
it will cause the queue to stall if stopped.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ibmvnic: Fix DMA mapping mistakes

Fix some mistakes caught by the DMA debugger. The first change
fixes a unnecessary unmap that should have been removed in an
earlier update. The next hunk fixes another bad unmap by zeroing
the bit checked to determine that an unmap is needed. The final
change fixes some buffers that are unmapped with the wrong
direction specified.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

tipc: use the right skb in tipc_sk_fill_sock_diag()

Commit 4b2e6877b879 ("tipc: Fix namespace violation in tipc_sk_fill_sock_diag")
tried to fix the crash but failed, the crash is still 100% reproducible
with it.

In tipc_sk_fill_sock_diag(), skb is the diag dump we are filling, it is not
correct to retrieve its NETLINK_CB(), instead, like other protocol diag,
we should use NETLINK_CB(cb->skb).sk here.

Reported-by: <syzbot+326e587eff1074657718@syzkaller.appspotmail.com>
Fixes: 4b2e6877b879 ("tipc: Fix namespace violation in tipc_sk_fill_sock_diag")
Fixes: c30b70deb5f4 (tipc: implement socket diagnostics for AF_TIPC)
Cc: GhantaKrishnamurthy MohanKrishna <mohan.krishna.ghanta.krishnamurthy@ericsson.com>
Cc: Jon Maloy <jon.maloy@ericsson.com>
Cc: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

sctp: sctp_sockaddr_af must check minimal addr length for AF_INET6

Check must happen before call to ipv6_addr_v4mapped()

syzbot report was :

BUG: KMSAN: uninit-value in sctp_sockaddr_af net/sctp/socket.c:359 [inline]
BUG: KMSAN: uninit-value in sctp_do_bind+0x60f/0xdc0 net/sctp/socket.c:384
CPU: 0 PID: 3576 Comm: syzkaller968804 Not tainted 4.16.0+ #82
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
__msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
sctp_sockaddr_af net/sctp/socket.c:359 [inline]
sctp_do_bind+0x60f/0xdc0 net/sctp/socket.c:384
sctp_bind+0x149/0x190 net/sctp/socket.c:332
inet6_bind+0x1fd/0x1820 net/ipv6/af_inet6.c:293
SYSC_bind+0x3f2/0x4b0 net/socket.c:1474
SyS_bind+0x54/0x80 net/socket.c:1460
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x43fd49
RSP: 002b:00007ffe99df3d28 EFLAGS: 00000213 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fd49
RDX: 0000000000000010 RSI: 0000000020000000 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000213 R12: 0000000000401670
R13: 0000000000401700 R14: 0000000000000000 R15: 0000000000000000

Local variable description: ----address@SYSC_bind
Variable was created at:
SYSC_bind+0x6f/0x4b0 net/socket.c:1461
SyS_bind+0x54/0x80 net/socket.c:1460

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

getname_kernel() needs to make sure that ->name != ->iname in long case

missed it in "kill struct filename.separate" several years ago.

Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

net: dsa: Discard frames from unused ports

The Marvell switches under some conditions will pass a frame to the
host with the port being the CPU port. Such frames are invalid, and
should be dropped. Not dropping them can result in a crash when
incrementing the receive statistics for an invalid port.

Reported-by: Chris Healy <cphealy@gmail.com>
Fixes: 91da11f870f0 ("net: Distributed Switch Architecture protocol support")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

sctp: do not leak kernel memory to user space

syzbot produced a nice report [1]

Issue here is that a recvmmsg() managed to leak 8 bytes of kernel memory
to user space, because sin_zero (padding field) was not properly cleared.

[1]
BUG: KMSAN: uninit-value in copy_to_user include/linux/uaccess.h:184 [inline]
BUG: KMSAN: uninit-value in move_addr_to_user+0x32e/0x530 net/socket.c:227
CPU: 1 PID: 3586 Comm: syzkaller481044 Not tainted 4.16.0+ #82
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
kmsan_internal_check_memory+0x164/0x1d0 mm/kmsan/kmsan.c:1176
kmsan_copy_to_user+0x69/0x160 mm/kmsan/kmsan.c:1199
copy_to_user include/linux/uaccess.h:184 [inline]
move_addr_to_user+0x32e/0x530 net/socket.c:227
___sys_recvmsg+0x4e2/0x810 net/socket.c:2211
__sys_recvmmsg+0x54e/0xdb0 net/socket.c:2313
SYSC_recvmmsg+0x29b/0x3e0 net/socket.c:2394
SyS_recvmmsg+0x76/0xa0 net/socket.c:2378
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x4401c9
RSP: 002b:00007ffc56f73098 EFLAGS: 00000217 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401c9
RDX: 0000000000000001 RSI: 0000000020003ac0 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 0000000020003bc0 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401af0
R13: 0000000000401b80 R14: 0000000000000000 R15: 0000000000000000

Local variable description: ----addr@___sys_recvmsg
Variable was created at:
___sys_recvmsg+0xd5/0x810 net/socket.c:2172
__sys_recvmmsg+0x54e/0xdb0 net/socket.c:2313

Bytes 8-15 of 16 are uninitialized

==================================================================
Kernel panic - not syncing: panic_on_warn set ...

CPU: 1 PID: 3586 Comm: syzkaller481044 Tainted: G B 4.16.0+ #82
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
panic+0x39d/0x940 kernel/panic.c:183
kmsan_report+0x238/0x240 mm/kmsan/kmsan.c:1083
kmsan_internal_check_memory+0x164/0x1d0 mm/kmsan/kmsan.c:1176
kmsan_copy_to_user+0x69/0x160 mm/kmsan/kmsan.c:1199
copy_to_user include/linux/uaccess.h:184 [inline]
move_addr_to_user+0x32e/0x530 net/socket.c:227
___sys_recvmsg+0x4e2/0x810 net/socket.c:2211
__sys_recvmmsg+0x54e/0xdb0 net/socket.c:2313
SYSC_recvmmsg+0x29b/0x3e0 net/socket.c:2394
SyS_recvmmsg+0x76/0xa0 net/socket.c:2378
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Vlad Yasevich <vyasevich@gmail.com>
Cc: Neil Horman <nhorman@tuxdriver.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'net-fix-uninit-values-in-networking-stack'

Eric Dumazet says:

====================
net: fix uninit-values in networking stack

It seems syzbot got new features enabled, and fired some interesting
reports. Oh well.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>

soreuseport: initialise timewait reuseport field

syzbot reported an uninit-value in inet_csk_bind_conflict() [1]

It turns out we never propagated sk->sk_reuseport into timewait socket.

[1]
BUG: KMSAN: uninit-value in inet_csk_bind_conflict+0x5f9/0x990 net/ipv4/inet_connection_sock.c:151
CPU: 1 PID: 3589 Comm: syzkaller008242 Not tainted 4.16.0+ #82
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
__msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
inet_csk_bind_conflict+0x5f9/0x990 net/ipv4/inet_connection_sock.c:151
inet_csk_get_port+0x1d28/0x1e40 net/ipv4/inet_connection_sock.c:320
inet6_bind+0x121c/0x1820 net/ipv6/af_inet6.c:399
SYSC_bind+0x3f2/0x4b0 net/socket.c:1474
SyS_bind+0x54/0x80 net/socket.c:1460
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x4416e9
RSP: 002b:00007ffce6d15c88 EFLAGS: 00000217 ORIG_RAX: 0000000000000031
RAX: ffffffffffffffda RBX: 0100000000000000 RCX: 00000000004416e9
RDX: 000000000000001c RSI: 0000000020402000 RDI: 0000000000000004
RBP: 0000000000000000 R08: 00000000e6d15e08 R09: 00000000e6d15e08
R10: 0000000000000004 R11: 0000000000000217 R12: 0000000000009478
R13: 00000000006cd448 R14: 0000000000000000 R15: 0000000000000000

Uninit was stored to memory at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
__msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:521
tcp_time_wait+0xf17/0xf50 net/ipv4/tcp_minisocks.c:283
tcp_rcv_state_process+0xebe/0x6490 net/ipv4/tcp_input.c:6003
tcp_v6_do_rcv+0x11dd/0x1d90 net/ipv6/tcp_ipv6.c:1331
sk_backlog_rcv include/net/sock.h:908 [inline]
__release_sock+0x2d6/0x680 net/core/sock.c:2271
release_sock+0x97/0x2a0 net/core/sock.c:2786
tcp_close+0x277/0x18f0 net/ipv4/tcp.c:2269
inet_release+0x240/0x2a0 net/ipv4/af_inet.c:427
inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:435
sock_release net/socket.c:595 [inline]
sock_close+0xe0/0x300 net/socket.c:1149
__fput+0x49e/0xa10 fs/file_table.c:209
____fput+0x37/0x40 fs/file_table.c:243
task_work_run+0x243/0x2c0 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0x10e1/0x38d0 kernel/exit.c:867
do_group_exit+0x1a0/0x360 kernel/exit.c:970
SYSC_exit_group+0x21/0x30 kernel/exit.c:981
SyS_exit_group+0x25/0x30 kernel/exit.c:979
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Uninit was stored to memory at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
__msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:521
inet_twsk_alloc+0xaef/0xc00 net/ipv4/inet_timewait_sock.c:182
tcp_time_wait+0xd9/0xf50 net/ipv4/tcp_minisocks.c:258
tcp_rcv_state_process+0xebe/0x6490 net/ipv4/tcp_input.c:6003
tcp_v6_do_rcv+0x11dd/0x1d90 net/ipv6/tcp_ipv6.c:1331
sk_backlog_rcv include/net/sock.h:908 [inline]
__release_sock+0x2d6/0x680 net/core/sock.c:2271
release_sock+0x97/0x2a0 net/core/sock.c:2786
tcp_close+0x277/0x18f0 net/ipv4/tcp.c:2269
inet_release+0x240/0x2a0 net/ipv4/af_inet.c:427
inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:435
sock_release net/socket.c:595 [inline]
sock_close+0xe0/0x300 net/socket.c:1149
__fput+0x49e/0xa10 fs/file_table.c:209
____fput+0x37/0x40 fs/file_table.c:243
task_work_run+0x243/0x2c0 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0x10e1/0x38d0 kernel/exit.c:867
do_group_exit+0x1a0/0x360 kernel/exit.c:970
SYSC_exit_group+0x21/0x30 kernel/exit.c:981
SyS_exit_group+0x25/0x30 kernel/exit.c:979
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188
kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314
kmem_cache_alloc+0xaab/0xb90 mm/slub.c:2756
inet_twsk_alloc+0x13b/0xc00 net/ipv4/inet_timewait_sock.c:163
tcp_time_wait+0xd9/0xf50 net/ipv4/tcp_minisocks.c:258
tcp_rcv_state_process+0xebe/0x6490 net/ipv4/tcp_input.c:6003
tcp_v6_do_rcv+0x11dd/0x1d90 net/ipv6/tcp_ipv6.c:1331
sk_backlog_rcv include/net/sock.h:908 [inline]
__release_sock+0x2d6/0x680 net/core/sock.c:2271
release_sock+0x97/0x2a0 net/core/sock.c:2786
tcp_close+0x277/0x18f0 net/ipv4/tcp.c:2269
inet_release+0x240/0x2a0 net/ipv4/af_inet.c:427
inet6_release+0xaf/0x100 net/ipv6/af_inet6.c:435
sock_release net/socket.c:595 [inline]
sock_close+0xe0/0x300 net/socket.c:1149
__fput+0x49e/0xa10 fs/file_table.c:209
____fput+0x37/0x40 fs/file_table.c:243
task_work_run+0x243/0x2c0 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0x10e1/0x38d0 kernel/exit.c:867
do_group_exit+0x1a0/0x360 kernel/exit.c:970
SYSC_exit_group+0x21/0x30 kernel/exit.c:981
SyS_exit_group+0x25/0x30 kernel/exit.c:979
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2

Fixes: da5e36308d9f ("soreuseport: TCP/IPv4 implementation")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

ipv4: fix uninit-value in ip_route_output_key_hash_rcu()

syzbot complained that res.type could be used while not initialized.

Using RTN_UNSPEC as initial value seems better than using garbage.

BUG: KMSAN: uninit-value in __mkroute_output net/ipv4/route.c:2200 [inline]
BUG: KMSAN: uninit-value in ip_route_output_key_hash_rcu+0x31f0/0x3940 net/ipv4/route.c:2493
CPU: 1 PID: 12207 Comm: syz-executor0 Not tainted 4.16.0+ #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
__msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
__mkroute_output net/ipv4/route.c:2200 [inline]
ip_route_output_key_hash_rcu+0x31f0/0x3940 net/ipv4/route.c:2493
ip_route_output_key_hash net/ipv4/route.c:2322 [inline]
__ip_route_output_key include/net/route.h:126 [inline]
ip_route_output_flow+0x1eb/0x3c0 net/ipv4/route.c:2577
raw_sendmsg+0x1861/0x3ed0 net/ipv4/raw.c:653
inet_sendmsg+0x48d/0x740 net/ipv4/af_inet.c:764
sock_sendmsg_nosec net/socket.c:630 [inline]
sock_sendmsg net/socket.c:640 [inline]
SYSC_sendto+0x6c3/0x7e0 net/socket.c:1747
SyS_sendto+0x8a/0xb0 net/socket.c:1715
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455259
RSP: 002b:00007fdc0625dc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fdc0625e6d4 RCX: 0000000000455259
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000020000080 R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004f7 R14: 00000000006fa7c8 R15: 0000000000000000

Local variable description: ----res.i.i@ip_route_output_flow
Variable was created at:
ip_route_output_flow+0x75/0x3c0 net/ipv4/route.c:2576
raw_sendmsg+0x1861/0x3ed0 net/ipv4/raw.c:653

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

dccp: initialize ireq->ir_mark

syzbot reported an uninit-value read of skb->mark in iptable_mangle_hook()

Thanks to the nice report, I tracked the problem to dccp not caring
of ireq->ir_mark for passive sessions.

BUG: KMSAN: uninit-value in ipt_mangle_out net/ipv4/netfilter/iptable_mangle.c:66 [inline]
BUG: KMSAN: uninit-value in iptable_mangle_hook+0x5e5/0x720 net/ipv4/netfilter/iptable_mangle.c:84
CPU: 0 PID: 5300 Comm: syz-executor3 Not tainted 4.16.0+ #81
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
__msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
ipt_mangle_out net/ipv4/netfilter/iptable_mangle.c:66 [inline]
iptable_mangle_hook+0x5e5/0x720 net/ipv4/netfilter/iptable_mangle.c:84
nf_hook_entry_hookfn include/linux/netfilter.h:120 [inline]
nf_hook_slow+0x158/0x3d0 net/netfilter/core.c:483
nf_hook include/linux/netfilter.h:243 [inline]
__ip_local_out net/ipv4/ip_output.c:113 [inline]
ip_local_out net/ipv4/ip_output.c:122 [inline]
ip_queue_xmit+0x1d21/0x21c0 net/ipv4/ip_output.c:504
dccp_transmit_skb+0x15eb/0x1900 net/dccp/output.c:142
dccp_xmit_packet+0x814/0x9e0 net/dccp/output.c:281
dccp_write_xmit+0x20f/0x480 net/dccp/output.c:363
dccp_sendmsg+0x12ca/0x12d0 net/dccp/proto.c:818
inet_sendmsg+0x48d/0x740 net/ipv4/af_inet.c:764
sock_sendmsg_nosec net/socket.c:630 [inline]
sock_sendmsg net/socket.c:640 [inline]
___sys_sendmsg+0xec0/0x1310 net/socket.c:2046
__sys_sendmsg net/socket.c:2080 [inline]
SYSC_sendmsg+0x2a3/0x3d0 net/socket.c:2091
SyS_sendmsg+0x54/0x80 net/socket.c:2087
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
RIP: 0033:0x455259
RSP: 002b:00007f1a4473dc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1a4473e6d4 RCX: 0000000000455259
RDX: 0000000000000000 RSI: 0000000020b76fc8 RDI: 0000000000000015
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000004f0 R14: 00000000006fa720 R15: 0000000000000000

Uninit was stored to memory at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
__msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:521
ip_queue_xmit+0x1e35/0x21c0 net/ipv4/ip_output.c:502
dccp_transmit_skb+0x15eb/0x1900 net/dccp/output.c:142
dccp_xmit_packet+0x814/0x9e0 net/dccp/output.c:281
dccp_write_xmit+0x20f/0x480 net/dccp/output.c:363
dccp_sendmsg+0x12ca/0x12d0 net/dccp/proto.c:818
inet_sendmsg+0x48d/0x740 net/ipv4/af_inet.c:764
sock_sendmsg_nosec net/socket.c:630 [inline]
sock_sendmsg net/socket.c:640 [inline]
___sys_sendmsg+0xec0/0x1310 net/socket.c:2046
__sys_sendmsg net/socket.c:2080 [inline]
SYSC_sendmsg+0x2a3/0x3d0 net/socket.c:2091
SyS_sendmsg+0x54/0x80 net/socket.c:2087
do_syscall_64+0x309/0x430 arch/x86/entry/common.c:287
entry_SYSCALL_64_after_hwframe+0x3d/0xa2
Uninit was stored to memory at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_save_stack mm/kmsan/kmsan.c:293 [inline]
kmsan_internal_chain_origin+0x12b/0x210 mm/kmsan/kmsan.c:684
__msan_chain_origin+0x69/0xc0 mm/kmsan/kmsan_instr.c:521
inet_csk_clone_lock+0x503/0x580 net/ipv4/inet_connection_sock.c:797
dccp_create_openreq_child+0x7f/0x890 net/dccp/minisocks.c:92
dccp_v4_request_recv_sock+0x22c/0xe90 net/dccp/ipv4.c:408
dccp_v6_request_recv_sock+0x290/0x2000 net/dccp/ipv6.c:414
dccp_check_req+0x7b9/0x8f0 net/dccp/minisocks.c:197
dccp_v4_rcv+0x12e4/0x2630 net/dccp/ipv4.c:840
ip_local_deliver_finish+0x6ed/0xd40 net/ipv4/ip_input.c:216
NF_HOOK include/linux/netfilter.h:288 [inline]
ip_local_deliver+0x43c/0x4e0 net/ipv4/ip_input.c:257
dst_input include/net/dst.h:449 [inline]
ip_rcv_finish+0x1253/0x16d0 net/ipv4/ip_input.c:397
NF_HOOK include/linux/netfilter.h:288 [inline]
ip_rcv+0x119d/0x16f0 net/ipv4/ip_input.c:493
__netif_receive_skb_core+0x47cf/0x4a80 net/core/dev.c:4562
__netif_receive_skb net/core/dev.c:4627 [inline]
process_backlog+0x62d/0xe20 net/core/dev.c:5307
napi_poll net/core/dev.c:5705 [inline]
net_rx_action+0x7c1/0x1a70 net/core/dev.c:5771
__do_softirq+0x56d/0x93d kernel/softirq.c:285
Uninit was created at:
kmsan_save_stack_with_flags mm/kmsan/kmsan.c:278 [inline]
kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:188
kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:314
kmem_cache_alloc+0xaab/0xb90 mm/slub.c:2756
reqsk_alloc include/net/request_sock.h:88 [inline]
inet_reqsk_alloc+0xc4/0x7f0 net/ipv4/tcp_input.c:6145
dccp_v4_conn_request+0x5cc/0x1770 net/dccp/ipv4.c:600
dccp_v6_conn_request+0x299/0x1880 net/dccp/ipv6.c:317
dccp_rcv_state_process+0x2ea/0x2410 net/dccp/input.c:612
dccp_v4_do_rcv+0x229/0x340 net/dccp/ipv4.c:682
dccp_v6_do_rcv+0x16d/0x1220 net/dccp/ipv6.c:578
sk_backlog_rcv include/net/sock.h:908 [inline]
__sk_receive_skb+0x60e/0xf20 net/core/sock.c:513
dccp_v4_rcv+0x24d4/0x2630 net/dccp/ipv4.c:874
ip_local_deliver_finish+0x6ed/0xd40 net/ipv4/ip_input.c:216
NF_HOOK include/linux/netfilter.h:288 [inline]
ip_local_deliver+0x43c/0x4e0 net/ipv4/ip_input.c:257
dst_input include/net/dst.h:449 [inline]
ip_rcv_finish+0x1253/0x16d0 net/ipv4/ip_input.c:397
NF_HOOK include/linux/netfilter.h:288 [inline]
ip_rcv+0x119d/0x16f0 net/ipv4/ip_input.c:493
__netif_receive_skb_core+0x47cf/0x4a80 net/core/dev.c:4562
__netif_receive_skb net/core/dev.c:4627 [inline]
process_backlog+0x62d/0xe20 net/core/dev.c:5307
napi_poll net/core/dev.c:5705 [inline]
net_rx_action+0x7c1/0x1a70 net/core/dev.c:5771
__do_softirq+0x56d/0x93d kernel/softirq.c:285

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: fix uninit-value in __hw_addr_add_ex()

syzbot complained :

BUG: KMSAN: uninit-value in memcmp+0x119/0x180 lib/string.c:861
CPU: 0 PID: 3 Comm: kworker/0:0 Not tainted 4.16.0+ #82
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
__dump_stack lib/dump_stack.c:17 [inline]
dump_stack+0x185/0x1d0 lib/dump_stack.c:53
kmsan_report+0x142/0x240 mm/kmsan/kmsan.c:1067
__msan_warning_32+0x6c/0xb0 mm/kmsan/kmsan_instr.c:676
memcmp+0x119/0x180 lib/string.c:861
__hw_addr_add_ex net/core/dev_addr_lists.c:60 [inline]
__dev_mc_add+0x1c2/0x8e0 net/core/dev_addr_lists.c:670
dev_mc_add+0x6d/0x80 net/core/dev_addr_lists.c:687
igmp6_group_added+0x2db/0xa00 net/ipv6/mcast.c:662
ipv6_dev_mc_inc+0xe9e/0x1130 net/ipv6/mcast.c:914
addrconf_join_solict net/ipv6/addrconf.c:2078 [inline]
addrconf_dad_begin net/ipv6/addrconf.c:3828 [inline]
addrconf_dad_work+0x427/0x2150 net/ipv6/addrconf.c:3954
process_one_work+0x12c6/0x1f60 kernel/workqueue.c:2113
worker_thread+0x113c/0x24f0 kernel/workqueue.c:2247
kthread+0x539/0x720 kernel/kthread.c:239

Fixes: f001fde5eadd ("net: introduce a list of device addresses dev_addr_list (v6)")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: initialize skb->peeked when cloning

syzbot reported __skb_try_recv_from_queue() was using skb->peeked
while it was potentially unitialized.

We need to clear it in __skb_clone()

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

net: fix rtnh_ok()

syzbot reported :

BUG: KMSAN: uninit-value in rtnh_ok include/net/nexthop.h:11 [inline]
BUG: KMSAN: uninit-value in fib_count_nexthops net/ipv4/fib_semantics.c:469 [inline]
BUG: KMSAN: uninit-value in fib_create_info+0x554/0x8d20 net/ipv4/fib_semantics.c:1091

@remaining is an integer, coming from user space.
If it is negative we want rtnh_ok() to return false.

Fixes: 4e902c57417c ("[IPv4]: FIB configuration using struct fib_config")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

netlink: fix uninit-value in netlink_sendmsg

syzbot reported :

BUG: KMSAN: uninit-value in ffs arch/x86/include/asm/bitops.h:432 [inline]
BUG: KMSAN: uninit-value in netlink_sendmsg+0xb26/0x1310 net/netlink/af_netlink.c:1851

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

crypto: af_alg - fix possible uninit-value in alg_bind()

syzbot reported :

BUG: KMSAN: uninit-value in alg_bind+0xe3/0xd90 crypto/af_alg.c:162

We need to check addr_len before dereferencing sa (or uaddr)

Fixes: bb30b8848c85 ("crypto: af_alg - whitelist mask and type")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: syzbot <syzkaller@googlegroups.com>
Cc: Stephan Mueller <smueller@chronox.de>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge branch 'next-integrity' of git://git./linux/kernel/git/jmorris/linux-security

Pull integrity updates from James Morris:
"A mixture of bug fixes, code cleanup, and continues to close
  IMA-measurement, IMA-appraisal, and IMA-audit gaps.

  Also note the addition of a new cred_getsecid LSM hook by Matthew
  Garrett:

     For IMA purposes, we want to be able to obtain the prepared secid
     in the bprm structure before the credentials are committed. Add a
     cred_getsecid hook that makes this possible.

  which is used by a new CREDS_CHECK target in IMA:

     In ima_bprm_check(), check with both the existing process
     credentials and the credentials that will be committed when the new
     process is started. This will not change behaviour unless the
     system policy is extended to include CREDS_CHECK targets -
     BPRM_CHECK will continue to check the same credentials that it did
     previously"

* 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  ima: Fallback to the builtin hash algorithm
  ima: Add smackfs to the default appraise/measure list
  evm: check for remount ro in progress before writing
  ima: Improvements in ima_appraise_measurement()
  ima: Simplify ima_eventsig_init()
  integrity: Remove unused macro IMA_ACTION_RULE_FLAGS
  ima: drop vla in ima_audit_measurement()
  ima: Fix Kconfig to select TPM 2.0 CRB interface
  evm: Constify *integrity_status_msg[]
  evm: Move evm_hmac and evm_hash from evm_main.c to evm_crypto.c
  fuse: define the filesystem as untrusted
  ima: fail signature verification based on policy
  ima: clear IMA_HASH
  ima: re-evaluate files on privileged mounted filesystems
  ima: fail file signature verification on non-init mounted filesystems
  IMA: Support using new creds in appraisal policy
  security: Add a cred_getsecid hook

Merge branch 'next-tpm' of git://git./linux/kernel/git/jmorris/linux-security

Pull TPM updates from James Morris:
"This release contains only bug fixes. There are no new major features
  added"

* 'next-tpm' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  tpm: fix intermittent failure with self tests
  tpm: add retry logic
  tpm: self test failure should not cause suspend to fail
  tpm2: add longer timeouts for creation commands.
  tpm_crb: use __le64 annotated variable for response buffer address
  tpm: fix buffer type in tpm_transmit_cmd
  tpm: tpm-interface: fix tpm_transmit/_cmd kdoc
  tpm: cmd_ready command can be issued only after granting locality

Merge branch 'next-smack' of git://git./linux/kernel/git/jmorris/linux-security

Pull smack update from James Morris:
"One small change for Automotive Grade Linux"

* 'next-smack' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
Smack: Handle CGROUP2 in the same way that CGROUP

alpha: io: reorder barriers to guarantee writeX() and iowriteX() ordering

memory-barriers.txt has been updated with the following requirement.

"When using writel(), a prior wmb() is not needed to guarantee that the
cache coherent memory writes have completed before writing to the MMIO
region."

Current writeX() and iowriteX() implementations on alpha are not
satisfying this requirement as the barrier is after the register write.

Move mb() in writeX() and iowriteX() functions to guarantee that HW
observes memory changes before performing register operations.

Signed-off-by: Sinan Kaya <okaya@codeaurora.org>
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Matt Turner <mattst88@gmail.com>

alpha: Implement CPU vulnerabilities sysfs functions.

Implement the CPU vulnerabilty show functions for meltdown, spectre_v1
and spectre_v2 on Alpha.

Tests on XP1000 (EV67/667MHz) and ES45 (EV68CB/1.25GHz) show them
to be vulnerable to Meltdown and Spectre V1. In the case of
Meltdown I saw a 1 to 2% success rate in reading bytes on the
XP1000 and 50 to 60% success rate on the ES45. (This compares to
99.97% success reported for Intel CPUs.) Report EV6 and later
CPUs as vulnerable.

Tests on PWS600au (EV56/600MHz) for Spectre V1 attack were
unsuccessful (though I did not try particularly hard) so mark EV4
through to EV56 as not vulnerable.

Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Matt Turner <mattst88@gmail.com>

alpha: rtc: stop validating rtc_time in .read_time

The RTC core is always calling rtc_valid_tm after the read_time callback.
It is not necessary to call it just before returning from the callback.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>

alpha: rtc: remove unused set_mmss ops

The .set_mmss and .setmmss64 ops are only called when the RTC is not
providing an implementation for the .set_time callback.

On alpha, .set_time is provided so .set_mmss64 is never called. Remove the
unused code.

Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Matt Turner <mattst88@gmail.com>

Merge branch 'misc.compat' of git://git./linux/kernel/git/viro/vfs

Pull alpha syscall cleanups from Al Viro:
"A couple of SYSCALL_DEFINE conversions and removal of pointless (and
  bitrotted) piece stuck in ret_from_kernel_thread since the
  kernel_exceve/kernel_thread conversions six years ago"

* 'misc.compat' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  alpha: get rid of pointless insn in ret_from_kernel_thread
  alpha: switch pci syscalls to SYSCALL_DEFINE

Merge branch 'misc.sparc' of git://git./linux/kernel/git/viro/vfs

Pull sparc syscall cleanups from Al Viro:
"sparc syscall stuff - killing pointless wrappers, conversions to
  {COMPAT_,}SYSCALL_DEFINE"

* 'misc.sparc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
  sparc: get rid of asm wrapper for nis_syscall()
  sparc: switch compat {f,}truncate64() to COMPAT_SYSCALL_DEFINE
  sparc: switch compat pread64 and pwrite64 to COMPAT_SYSCALL_DEFINE
  convert compat sync_file_range() to COMPAT_SYSCALL_DEFINE
  switch sparc_remap_file_pages() to SYSCALL_DEFINE
  sparc: get rid of memory_ordering(2) wrapper
  sparc: trivial conversions to {COMPAT_,}SYSCALL_DEFINE()
  sparc: bury a zombie extern that had been that way for twenty years
  sparc: get rid of remaining SIGN... wrappers
  sparc: kill useless SIGN... wrappers
  sparc: get rid of sys_sparc_pipe() wrappers

treewide: fix up files incorrectly marked executable

Joe Perches noted that we have a few source files that for some
inexplicable reason (read: I'm too lazy to even go look at the history)
are marked executable:

  drivers/gpu/drm/amd/amdgpu/vce_v4_0.c
  drivers/net/ethernet/cadence/macb_ptp.c

A simple git command line to show executable C/asm/header files is this:

    git ls-files -s '*.[chsS]' | grep '^100755'

and then you can fix them up with scripting by just feeding that output
into:

    | cut -f2 | xargs chmod -x

and commit it.

Which is exactly what this commit does.

Reported-by: Joe Perches <joe@perches.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Merge branch 'i2c/for-4.17' of git://git./linux/kernel/git/wsa/linux

Pull i2c updates from Wolfram Sang:

-I2C core now reports proper OF style module alias. I'd like to repeat
  the note from the commit msg here (Thanks, Javier!):

      NOTE: This patch may break out-of-tree drivers that were relying
            on this behavior, and only had an I2C device ID table even
            when the device was registered via OF.

            There are no remaining drivers in mainline that do this, but
            out-of-tree drivers have to be fixed and define a proper OF
            device ID table to have module auto-loading working.

- new driver for the SynQuacer I2C controller

- major refactoring of the QUP driver

- the piix4 driver now uses request_muxed_region which should fix a
   long standing resource conflict with the sp5100_tco watchdog

- a bunch of small core & driver improvements

* 'i2c/for-4.17' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (53 commits)
  i2c: add support for Socionext SynQuacer I2C controller
  dt-bindings: i2c: add binding for Socionext SynQuacer I2C
  i2c: Update i2c_trace_msg static key to modern api
  i2c: fix parameter of trace_i2c_result
  i2c: imx: avoid taking clk_prepare mutex in PM callbacks
  i2c: imx: use clk notifier for rate changes
  i2c: make i2c_check_addr_validity() static
  i2c: rcar: fix mask value of prohibited bit
  dt-bindings: i2c: document R8A77965 bindings
  i2c: pca-platform: drop gpio from platform data
  i2c: pca-platform: use device_property_read_u32
  i2c: pca-platform: unconditionally use devm_gpiod_get_optional
  sh: sh7785lcr: add GPIO lookup table for i2c controller reset
  i2c: qup: reorganization of driver code to remove polling for qup v2
  i2c: qup: reorganization of driver code to remove polling for qup v1
  i2c: qup: send NACK for last read sub transfers
  i2c: qup: fix buffer overflow for multiple msg of maximum xfer len
  i2c: qup: change completion timeout according to transfer length
  i2c: qup: use the complete transfer length to choose DMA mode
  i2c: qup: proper error handling for i2c error in BAM mode
  ...

Merge tag 'powerpc-4.17-1' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:
"Notable changes:

   - Support for 4PB user address space on 64-bit, opt-in via mmap().

   - Removal of POWER4 support, which was accidentally broken in 2016
     and no one noticed, and blocked use of some modern instructions.

   - Workarounds so that the hypervisor can enable Transactional Memory
     on Power9.

   - A series to disable the DAWR (Data Address Watchpoint Register) on
     Power9.

   - More information displayed in the meltdown/spectre_v1/v2 sysfs
     files.

   - A vpermxor (Power8 Altivec) implementation for the raid6 Q
     Syndrome.

   - A big series to make the allocation of our pacas (per cpu area),
     kernel page tables, and per-cpu stacks NUMA aware when using the
     Radix MMU on Power9.

  And as usual many fixes, reworks and cleanups.

  Thanks to: Aaro Koskinen, Alexandre Belloni, Alexey Kardashevskiy,
  Alistair Popple, Andy Shevchenko, Aneesh Kumar K.V, Anshuman Khandual,
  Balbir Singh, Benjamin Herrenschmidt, Christophe Leroy, Christophe
  Lombard, Cyril Bur, Daniel Axtens, Dave Young, Finn Thain, Frederic
  Barrat, Gustavo Romero, Horia Geantă, Jonathan Neuschäfer, Kees Cook,
  Larry Finger, Laurent Dufour, Laurent Vivier, Logan Gunthorpe,
  Madhavan Srinivasan, Mark Greer, Mark Hairgrove, Markus Elfring,
  Mathieu Malaterre, Matt Brown, Matt Evans, Mauricio Faria de Oliveira,
  Michael Neuling, Naveen N. Rao, Nicholas Piggin, Paul Mackerras,
  Philippe Bergheaud, Ram Pai, Rob Herring, Sam Bobroff, Segher
  Boessenkool, Simon Guo, Simon Horman, Stewart Smith, Sukadev
  Bhattiprolu, Suraj Jitindar Singh, Thiago Jung Bauermann, Vaibhav
  Jain, Vaidyanathan Srinivasan, Vasant Hegde, Wei Yongjun"

* tag 'powerpc-4.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (207 commits)
  powerpc/64s/idle: Fix restore of AMOR on POWER9 after deep sleep
  powerpc/64s: Fix POWER9 DD2.2 and above in cputable features
  powerpc/64s: Fix pkey support in dt_cpu_ftrs, add CPU_FTR_PKEY bit
  powerpc/64s: Fix dt_cpu_ftrs to have restore_cpu clear unwanted LPCR bits
  Revert "powerpc/64s/idle: POWER9 ESL=0 stop avoid save/restore overhead"
  powerpc: iomap.c: introduce io{read|write}64_{lo_hi|hi_lo}
  powerpc: io.h: move iomap.h include so that it can use readq/writeq defs
  cxl: Fix possible deadlock when processing page faults from cxllib
  powerpc/hw_breakpoint: Only disable hw breakpoint if cpu supports it
  powerpc/mm/radix: Update command line parsing for disable_radix
  powerpc/mm/radix: Parse disable_radix commandline correctly.
  powerpc/mm/hugetlb: initialize the pagetable cache correctly for hugetlb
  powerpc/mm/radix: Update pte fragment count from 16 to 256 on radix
  powerpc/mm/keys: Update documentation and remove unnecessary check
  powerpc/64s/idle: POWER9 ESL=0 stop avoid save/restore overhead
  powerpc/64s/idle: Consolidate power9_offline_stop()/power9_idle_stop()
  powerpc/powernv: Always stop secondaries before reboot/shutdown
  powerpc: hard disable irqs in smp_send_stop loop
  powerpc: use NMI IPI for smp_send_stop
  powerpc/powernv: Fix SMT4 forcing idle code
  ...

Merge tag 'leaks-4.17-rc1' of git://git./linux/kernel/git/tobin/leaks

Pull leaking-addresses updates from Tobin Harding:
"This set represents improvements to the scripts/leaking_addresses.pl
  script.

  The major improvement is that with this set applied the script
  actually runs in a reasonable amount of time (less than a minute on a
  standard stock Ubuntu user desktop). Also, we have a second maintainer
  now and a tree hosted on kernel.org

  We do a few code clean ups. We fix the command help output. Handling
  of the vsyscall address range is fixed to check the whole range
  instead of just the start/end addresses. We add support for 5 page
  table levels (suggested on LKML). We use a system command to get the
  machine architecture instead of using Perl. Calling this command for
  every regex comparison is what previously choked the script, caching
  the result of this call gave the major speed improvement. We add
  support for scanning 32-bit kernels using the user/kernel memory
  split. Path skipping code refactored and simplified (meaning easier
  script configuration). We remove version numbering. We add a variable
  name to improve readability of a regex and finally we check filenames
  for leaking addresses.

  Currently script scans /proc/PID for all PID. With this set applied we
  only scan for PID==1. It was observed that on an idle system files
  under /proc/PID are predominantly the same for all processes. Also it
  was noted that the script does not scan _all_ the kernel since it only
  scans active processes. Scanning only for PID==1 makes explicit the
  inherent flaw in the script that the scan is only partial and also
  speeds things up"

* tag 'leaks-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tobin/leaks:
  MAINTAINERS: Update LEAKING_ADDRESSES
  leaking_addresses: check if file name contains address
  leaking_addresses: explicitly name variable used in regex
  leaking_addresses: remove version number
  leaking_addresses: skip '/proc/1/syscall'
  leaking_addresses: skip all /proc/PID except /proc/1
  leaking_addresses: cache architecture name
  leaking_addresses: simplify path skipping
  leaking_addresses: do not parse binary files
  leaking_addresses: add 32-bit support
  leaking_addresses: add is_arch() wrapper subroutine
  leaking_addresses: use system command to get arch
  leaking_addresses: add support for 5 page table levels
  leaking_addresses: add support for kernel config file
  leaking_addresses: add range check for vsyscall memory
  leaking_addresses: indent dependant options
  leaking_addresses: remove command examples
  leaking_addresses: remove mention of kptr_restrict
  leaking_addresses: fix typo function not called

Merge tag 'linux-kselftest-4.17-rc1' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull kselftest update from Shuah Khan:
"This Kselftest update for 4.17-rc1 consists of:

   - Test build error fixes

   - Fixes to prevent intel_pstate from building on non-x86 systems.

   - New test for ion with vgem driver.

   - Change to print the test name to /dev/kmsg to add context to kernel
     failures if any uncovered from running the test.

   - Kselftest framework enhancements to add KSFT_TAP_LEVEL environment
     variable to prevent nested TAP headers being printed in the
     Kselftest output.

     Nested TAP13 headers could cause problems for some parsers. This
     change suppresses the nested headers from test programs and test
     shell scripts with changes to framework and Makefiles without
     changing the tests"

* tag 'linux-kselftest-4.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/intel_pstate: Fix build rule for x86
  selftests: Print the test we're running to /dev/kmsg
  selftests/seccomp: Allow get_metadata to XFAIL
  selftests/android/ion: Makefile: fix build error
  selftests: futex Makefile add top level TAP header echo to RUN_TESTS
  selftests: Makefile set KSFT_TAP_LEVEL to prevent nested TAP headers
  selftests: lib.mk set KSFT_TAP_LEVEL to prevent nested TAP headers
  selftests: kselftest framework: add handling for TAP header level
  selftests: ion: Add simple test with the vgem driver
  selftests: ion: Remove some prints

Merge branch 'next-general' of git://git./linux/kernel/git/jmorris/linux-security

Pull general security layer updates from James Morris:

- Convert security hooks from list to hlist, a nice cleanup, saving
   about 50% of space, from Sargun Dhillon.

- Only pass the cred, not the secid, to kill_pid_info_as_cred and
   security_task_kill (as the secid can be determined from the cred),
   from Stephen Smalley.

- Close a potential race in kernel_read_file(), by making the file
   unwritable before calling the LSM check (vs after), from Kees Cook.

* 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  security: convert security hooks to use hlist
  exec: Set file unwritable before LSM check
  usb, signal, security: only pass the cred, not the secid, to kill_pid_info_as_cred and security_task_kill

net_sched: fix a missing idr_remove() in u32_delete_key()

When we delete a u32 key via u32_delete_key(), we forget to
call idr_remove() to remove its handle from IDR.

Fixes: e7614370d6f0 ("net_sched: use idr to allocate u32 filter handles")
Reported-by: Marcin Kabiesz <admin@hostcenter.eu>
Tested-by: Marcin Kabiesz <admin@hostcenter.eu>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

Merge tag 'fscache-next-20180406' of git://git./linux/kernel/git/dhowells/linux-fs

Pull fscache updates from David Howells:
"Three patches that fix some of AFS's usage of fscache:

   (1) Need to invalidate the cache if a foreign data change is detected
       on the server.

   (2) Move the vnode ID uniquifier (equivalent to i_generation) from
       the auxiliary data to the index key to prevent a race between
       file delete and a subsequent file create seeing the same index
       key.

   (3) Need to retire cookies that correspond to files that we think got
       deleted on the server.

  Four patches to fix some things in fscache and cachefiles:

   (4) Fix a couple of checker warnings.

   (5) Correctly indicate to the end-of-operation callback whether an
       operation completed or was cancelled.

   (6) Add a check for multiple cookie relinquishment.

   (7) Fix a path through the asynchronous write that doesn't wake up a
       waiter for a page if the cache decides not to write that page,
       but discards it instead.

  A couple of patches to add tracepoints to fscache and cachefiles:

   (8) Add tracepoints for cookie operators, object state machine
       execution, cachefiles object management and cachefiles VFS
       operations.

   (9) Add tracepoints for fscache operation management and page
       wrangling.

  And then three development patches:

  (10) Attach the index key and auxiliary data to the cookie, pass this
       information through various fscache-netfs API functions and get
       rid of the callbacks to the netfs to get it.

       This means that the cache can get at this information, even if
       the netfs goes away. It also means that the cache can be lazy in
       updating the coherency data.

  (11) Pass the object data size through various fscache-netfs API
       rather than calling back to the netfs for it, and store the value
       in the object.

       This makes it easier to correctly resize the object, as the size
       is updated on writes to the cache, rather than calling back out
       to the netfs.

  (12) Maintain a catalogue of allocated cookies. This makes it possible
       to catch cookie collision up front rather than down in the bowels
       of the cache being run from a service thread from the object
       state machine.

       This will also make it possible in the future to reconnect to a
       cookie that's not gone dead yet because it's waiting for
       finalisation of the storage and also make it possible to bring
       cookies online if the cache is added after the cookie has been
       obtained"

* tag 'fscache-next-20180406' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs:
  fscache: Maintain a catalogue of allocated cookies
  fscache: Pass object size in rather than calling back for it
  fscache: Attach the index key and aux data to the cookie
  fscache: Add more tracepoints
  fscache: Add tracepoints
  fscache: Fix hanging wait on page discarded by writeback
  fscache: Detect multiple relinquishment of a cookie
  fscache: Pass the correct cancelled indications to fscache_op_complete()
  fscache, cachefiles: Fix checker warnings
  afs: Be more aggressive in retiring cached vnodes
  afs: Use the vnode ID uniquifier in the cache key not the aux data
  afs: Invalidate cache on server data change

Merge tag 'vfio-v4.17-rc1' of git://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

- Adopt iommu_unmap_fast() interface to type1 backend
   (Suravee Suthikulpanit)

- mdev sample driver fixup (Shunyong Yang)

- More efficient PFN mapping handling in type1 backend
   (Jason Cai)

- VFIO device ioeventfd interface (Alex Williamson)

- Tag new vfio-platform sub-maintainer (Alex Williamson)

* tag 'vfio-v4.17-rc1' of git://github.com/awilliam/linux-vfio:
  MAINTAINERS: vfio/platform: Update sub-maintainer
  vfio/pci: Add ioeventfd support
  vfio/pci: Use endian neutral helpers
  vfio/pci: Pull BAR mapping setup from read-write path
  vfio/type1: Improve memory pinning process for raw PFN mapping
  vfio-mdev/samples: change RDI interrupt condition
  vfio/type1: Adopt fast IOTLB flush interface when unmap IOVAs

Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost

Pull fw_cfg, vhost updates from Michael Tsirkin:
"This cleans up the qemu fw cfg device driver.

  On top of this, vmcore is dumped there on crash to help debugging
  with kASLR enabled.

  Also included are some fixes in vhost"

* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
  vhost: add vsock compat ioctl
  vhost: fix vhost ioctl signature to build with clang
  fw_cfg: write vmcoreinfo details
  crash: export paddr_vmcoreinfo_note()
  fw_cfg: add DMA register
  fw_cfg: add a public uapi header
  fw_cfg: handle fw_cfg_read_blob() error
  fw_cfg: remove inline from fw_cfg_read_blob()
  fw_cfg: fix sparse warnings around FW_CFG_FILE_DIR read
  fw_cfg: fix sparse warning reading FW_CFG_ID
  fw_cfg: fix sparse warnings with fw_cfg_file
  fw_cfg: fix sparse warnings in fw_cfg_sel_endianness()
  ptr_ring: fix build

Merge tag 'pci-v4.17-changes' of git://git./linux/kernel/git/helgaas/pci

Pull PCI updates from Bjorn Helgaas:

- move pci_uevent_ers() out of pci.h (Michael Ellerman)

- skip ASPM common clock warning if BIOS already configured it (Sinan
   Kaya)

- fix ASPM Coverity warning about threshold_ns (Gustavo A. R. Silva)

- remove last user of pci_get_bus_and_slot() and the function itself
   (Sinan Kaya)

- add decoding for 16 GT/s link speed (Jay Fang)

- add interfaces to get max link speed and width (Tal Gilboa)

- add pcie_bandwidth_capable() to compute max supported link bandwidth
   (Tal Gilboa)

- add pcie_bandwidth_available() to compute bandwidth available to
   device (Tal Gilboa)

- add pcie_print_link_status() to log link speed and whether it's
   limited (Tal Gilboa)

- use PCI core interfaces to report when device performance may be
   limited by its slot instead of doing it in each driver (Tal Gilboa)

- fix possible cpqphp NULL pointer dereference (Shawn Lin)

- rescan more of the hierarchy on ACPI hotplug to fix Thunderbolt/xHCI
   hotplug (Mika Westerberg)

- add support for PCI I/O port space that's neither directly accessible
   via CPU in/out instructions nor directly mapped into CPU physical
   memory space. This is fairly intrusive and includes minor changes to
   interfaces used for I/O space on most platforms (Zhichang Yuan, John
   Garry)

- add support for HiSilicon Hip06/Hip07 LPC I/O space (Zhichang Yuan,
   John Garry)

- use PCI_EXP_DEVCTL2_COMP_TIMEOUT in rapidio/tsi721 (Bjorn Helgaas)

- remove possible NULL pointer dereference in of_pci_bus_find_domain_nr()
   (Shawn Lin)

- report quirk timings with dev_info (Bjorn Helgaas)

- report quirks that take longer than 10ms (Bjorn Helgaas)

- add and use Altera Vendor ID (Johannes Thumshirn)

- tidy Makefiles and comments (Bjorn Helgaas)

- don't set up INTx if MSI or MSI-X is enabled to align cris, frv,
   ia64, and mn10300 with x86 (Bjorn Helgaas)

- move pcieport_if.h to drivers/pci/pcie/ to encapsulate it (Frederick
   Lawler)

- merge pcieport_if.h into portdrv.h (Bjorn Helgaas)

- move workaround for BIOS PME issue from portdrv to PCI core (Bjorn
   Helgaas)

- completely disable portdrv with "pcie_ports=compat" (Bjorn Helgaas)

- remove portdrv link order dependency (Bjorn Helgaas)

- remove support for unused VC portdrv service (Bjorn Helgaas)

- simplify portdrv feature permission checking (Bjorn Helgaas)

- remove "pcie_hp=nomsi" parameter (use "pci=nomsi" instead) (Bjorn
   Helgaas)

- remove unnecessary "pcie_ports=auto" parameter (Bjorn Helgaas)

- use cached AER capability offset (Frederick Lawler)

- don't enable DPC if BIOS hasn't granted AER control (Mika Westerberg)

- rename pcie-dpc.c to dpc.c (Bjorn Helgaas)

- use generic pci_mmap_resource_range() instead of powerpc and xtensa
   arch-specific versions (David Woodhouse)

- support arbitrary PCI host bridge offsets on sparc (Yinghai Lu)

- remove System and Video ROM reservations on sparc (Bjorn Helgaas)

- probe for device reset support during enumeration instead of runtime
   (Bjorn Helgaas)

- add ACS quirk for Ampere (née APM) root ports (Feng Kan)

- add function 1 DMA alias quirk for Marvell 88SE9220 (Thomas
   Vincent-Cross)

- protect device restore with device lock (Sinan Kaya)

- handle failure of FLR gracefully (Sinan Kaya)

- handle CRS (config retry status) after device resets (Sinan Kaya)

- skip various config reads for SR-IOV VFs as an optimization
   (KarimAllah Ahmed)

- consolidate VPD code in vpd.c (Bjorn Helgaas)

- add Tegra dependency on PCI_MSI_IRQ_DOMAIN (Arnd Bergmann)

- add DT support for R-Car r8a7743 (Biju Das)

- fix a PCI_EJECT vs PCI_BUS_RELATIONS race condition in Hyper-V host
   bridge driver that causes a general protection fault (Dexuan Cui)

- fix Hyper-V host bridge hang in MSI setup on 1-vCPU VMs with SR-IOV
   (Dexuan Cui)

- fix Hyper-V host bridge hang when ejecting a VF before setting up MSI
   (Dexuan Cui)

- make several structures static (Fengguang Wu)

- increase number of MSI IRQs supported by Synopsys DesignWare bridges
   from 32 to 256 (Gustavo Pimentel)

- implemented multiplexed IRQ domain API and remove obsolete MSI IRQ
   API from DesignWare drivers (Gustavo Pimentel)

- add Tegra power management support (Manikanta Maddireddy)

- add Tegra loadable module support (Manikanta Maddireddy)

- handle 64-bit BARs correctly in endpoint support (Niklas Cassel)

- support optional regulator for HiSilicon STB (Shawn Guo)

- use regulator bulk API for Qualcomm apq8064 (Srinivas Kandagatla)

- support power supplies for Qualcomm msm8996 (Srinivas Kandagatla)

* tag 'pci-v4.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci: (123 commits)
  MAINTAINERS: Add John Garry as maintainer for HiSilicon LPC driver
  HISI LPC: Add ACPI support
  ACPI / scan: Do not enumerate Indirect IO host children
  ACPI / scan: Rename acpi_is_serial_bus_slave() for more general use
  HISI LPC: Support the LPC host on Hip06/Hip07 with DT bindings
  of: Add missing I/O range exception for indirect-IO devices
  PCI: Apply the new generic I/O management on PCI IO hosts
  PCI: Add fwnode handler as input param of pci_register_io_range()
  PCI: Remove __weak tag from pci_register_io_range()
  MAINTAINERS: Add missing /drivers/pci/cadence directory entry
  fm10k: Report PCIe link properties with pcie_print_link_status()
  net/mlx5e: Use pcie_bandwidth_available() to compute bandwidth
  net/mlx5: Report PCIe link properties with pcie_print_link_status()
  net/mlx4_core: Report PCIe link properties with pcie_print_link_status()
  PCI: Add pcie_print_link_status() to log link speed and whether it's limited
  PCI: Add pcie_bandwidth_available() to compute bandwidth available to device
  misc: pci_endpoint_test: Handle 64-bit BARs properly
  PCI: designware-ep: Make dw_pcie_ep_reset_bar() handle 64-bit BARs properly
  PCI: endpoint: Make sure that BAR_5 does not have 64-bit flag set when clearing
  PCI: endpoint: Make epc->ops->clear_bar()/pci_epc_clear_bar() take struct *epf_bar
  ...

Merge tag 'for-linus-unmerged' of git://git./linux/kernel/git/rdma/rdma

Pull rdma updates from Jason Gunthorpe:
"Doug and I are at a conference next week so if another PR is sent I
  expect it to only be bug fixes. Parav noted yesterday that there are
  some fringe case behavior changes in his work that he would like to
  fix, and I see that Intel has a number of rc looking patches for HFI1
  they posted yesterday.

  Parav is again the biggest contributor by patch count with his ongoing
  work to enable container support in the RDMA stack, followed by Leon
  doing syzkaller inspired cleanups, though most of the actual fixing
  went to RC.

  There is one uncomfortable series here fixing the user ABI to actually
  work as intended in 32 bit mode. There are lots of notes in the commit
  messages, but the basic summary is we don't think there is an actual
  32 bit kernel user of drivers/infiniband for several good reasons.

  However we are seeing people want to use a 32 bit user space with 64
  bit kernel, which didn't completely work today. So in fixing it we
  required a 32 bit rxe user to upgrade their userspace. rxe users are
  still already quite rare and we think a 32 bit one is non-existing.

   - Fix RDMA uapi headers to actually compile in userspace and be more
     complete

   - Three shared with netdev pull requests from Mellanox:

      * 7 patches, mostly to net with 1 IB related one at the back).
        This series addresses an IRQ performance issue (patch 1),
        cleanups related to the fix for the IRQ performance problem
        (patches 2-6), and then extends the fragmented completion queue
        support that already exists in the net side of the driver to the
        ib side of the driver (patch 7).

      * Mostly IB, with 5 patches to net that are needed to support the
        remaining 10 patches to the IB subsystem. This series extends
        the current 'representor' framework when the mlx5 driver is in
        switchdev mode from being a netdev only construct to being a
        netdev/IB dev construct. The IB dev is limited to raw Eth queue
        pairs only, but by having an IB dev of this type attached to the
        representor for a switchdev port, it enables DPDK to work on the
        switchdev device.

      * All net related, but needed as infrastructure for the rdma
        driver

   - Updates for the hns, i40iw, bnxt_re, cxgb3, cxgb4, hns drivers

   - SRP performance updates

   - IB uverbs write path cleanup patch series from Leon

   - Add RDMA_CM support to ib_srpt. This is disabled by default. Users
     need to set the port for ib_srpt to listen on in configfs in order
     for it to be enabled
     (/sys/kernel/config/target/srpt/discovery_auth/rdma_cm_port)

   - TSO and Scatter FCS support in mlx4

   - Refactor of modify_qp routine to resolve problems seen while
     working on new code that is forthcoming

   - More refactoring and updates of RDMA CM for containers support from
     Parav

   - mlx5 'fine grained packet pacing', 'ipsec offload' and 'device
     memory' user API features

   - Infrastructure updates for the new IOCTL interface, based on
     increased usage

   - ABI compatibility bug fixes to fully support 32 bit userspace on 64
     bit kernel as was originally intended. See the commit messages for
     extensive details

   - Syzkaller bugs and code cleanups motivated by them"

* tag 'for-linus-unmerged' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma: (199 commits)
  IB/rxe: Fix for oops in rxe_register_device on ppc64le arch
  IB/mlx5: Device memory mr registration support
  net/mlx5: Mkey creation command adjustments
  IB/mlx5: Device memory support in mlx5_ib
  net/mlx5: Query device memory capabilities
  IB/uverbs: Add device memory registration ioctl support
  IB/uverbs: Add alloc/free dm uverbs ioctl support
  IB/uverbs: Add device memory capabilities reporting
  IB/uverbs: Expose device memory capabilities to user
  RDMA/qedr: Fix wmb usage in qedr
  IB/rxe: Removed GID add/del dummy routines
  RDMA/qedr: Zero stack memory before copying to user space
  IB/mlx5: Add ability to hash by IPSEC_SPI when creating a TIR
  IB/mlx5: Add information for querying IPsec capabilities
  IB/mlx5: Add IPsec support for egress and ingress
  {net,IB}/mlx5: Add ipsec helper
  IB/mlx5: Add modify_flow_action_esp verb
  IB/mlx5: Add implementation for create and destroy action_xfrm
  IB/uverbs: Introduce ESP steering match filter
  IB/uverbs: Add modify ESP flow_action
  ...

Merge tag 'mailbox-v4.17' of git://git.linaro.org/landing-teams/working/fujitsu/integration

Pull mailbox updates from Jassi Brar:

- New Hi3660 mailbox driver

- Fix TEGRA Kconfig warning

- Broadcom: use dma_pool_zalloc instead of dma_pool_alloc+memset

* tag 'mailbox-v4.17' of git://git.linaro.org/landing-teams/working/fujitsu/integration:
  mailbox: Add support for Hi3660 mailbox
  dt-bindings: mailbox: Introduce Hi3660 controller binding
  mailbox: tegra: relax TEGRA_HSP_MBOX Kconfig dependencies
  maillbox: bcm-flexrm-mailbox: Use dma_pool_zalloc()

MAINTAINERS: Update LEAKING_ADDRESSES

MAINTAINERS is out of date for leaking_addresses.pl. There is now a tree on
kernel.org for development of this script. We have a second maintainer now,
thanks Tycho. Development of this scripts was started on kernel-hardening
mailing list so let's keep it there.

Update maintainer details; Add mailing list, kernel.org hosted tree, and second
maintainer.

Signed-off-by: Tobin C. Harding <me@tobin.cc>

leaking_addresses: check if file name contains address

Sometimes files may be created by using output from printk. As the scan
traverses the directory tree we should parse each path name and check if
it is leaking an address.

Add check for leaking address on each path name.

Suggested-by: Tycho Andersen <tycho@tycho.ws>
Acked-by: Tycho Andersen <tycho@tycho.ws>
Signed-off-by: Tobin C. Harding <me@tobin.cc>

leaking_addresses: explicitly name variable used in regex

Currently sub routine may_leak_address() is checking regex against Perl
special variable $_ which is _fortunately_ being set correctly in a loop
before this sub routine is called. We already have declared a variable
to hold this value '$line' we should use it.

Use $line in regex match instead of implicit $_

Signed-off-by: Tobin C. Harding <me@tobin.cc>

leaking_addresses: remove version number

We have git now, we don't need a version number. This was originally
added because leaking_addresses.pl shamelessly (and mindlessly) copied
checkpatch.pl

Remove version number from script.

Signed-off-by: Tobin C. Harding <me@tobin.cc>

leaking_addresses: skip '/proc/1/syscall'

The pointers listed in /proc/1/syscall are user pointers, and negative
syscall args will show up like kernel addresses.

For example

/proc/31808/syscall: 0 0x3 0x55b107a38180 0x2000 0xffffffffffffffb0 \
0x55b107a302d0 0x55b107a38180 0x7fffa313b8e8 0x7ff098560d11

Skip parsing /proc/1/syscall

Suggested-by: Tycho Andersen <tycho@tycho.ws>
Signed-off-by: Tobin C. Harding <me@tobin.cc>

leaking_addresses: skip all /proc/PID except /proc/1

When the system is idle it is likely that most files under /proc/PID
will be identical for various processes. Scanning _all_ the PIDs under
/proc is unnecessary and implies that we are thoroughly scanning /proc.
This is _not_ the case because there may be ways userspace can trigger
creation of /proc files that leak addresses but were not present during
a scan. For these two reasons we should exclude all PID directories
under /proc except '1/'

Exclude all /proc/PID except /proc/1.

Signed-off-by: Tobin C. Harding <me@tobin.cc>

leaking_addresses: cache architecture name

Currently we are repeatedly calling `uname -m`.  This is causing the
script to take a long time to run (more than 10 seconds to parse
/proc/kallsyms).  We can use Perl state variables to cache the result of
the first call to `uname -m`.  With this change in place the script
scans the whole kernel in under a minute.

Cache machine architecture in state variable.

Signed-off-by: Tobin C. Harding <me@tobin.cc>

leaking_addresses: simplify path skipping

Currently script has multiple configuration arrays. This is confusing,
evident by the fact that a bunch of the entries are in the wrong place.
We can simplify the code by just having a single array for absolute
paths to skip and a single array for file names to skip wherever they
appear in the scanned directory tree. There are also currently multiple
subroutines to handle the different arrays, we can reduce these to a
single subroutine also.

Simplify the path skipping code.

Signed-off-by: Tobin C. Harding <me@tobin.cc>

leaking_addresses: do not parse binary files

Currently script parses binary files. Since we are scanning for
readable kernel addresses there is no need to parse binary files. We
can use Perl to check if file is binary and skip parsing it if so.

Do not parse binary files.

Signed-off-by: Tobin C. Harding <me@tobin.cc>

leaking_addresses: add 32-bit support

Currently script only supports x86_64 and ppc64.  It would be nice to be
able to scan 32-bit machines also.  We can add support for 32-bit
architectures by modifying how we check for false positives, taking
advantage of the page offset used by the kernel, and using the correct
regular expression.

Support for 32-bit machines is enabled by the observation that the kernel
addresses on 32-bit machines are larger [in value] than the page offset.
We can use this to filter false positives when scanning the kernel for
leaking addresses.

Programmatic determination of the running architecture is not
immediately obvious (current 32-bit machines return various strings from
`uname -m`).  We therefore provide a flag to enable scanning of 32-bit
kernels.  Also we can check the kernel config file for the offset and if
not found default to 0xc0000000.  A command line option to parse in the
page offset is also provided.  We do automatically detect architecture
if running on ix86.

Add support for 32-bit kernels.  Add a command line option for page
offset.

Suggested-by: Kaiwan N Billimoria <kaiwan.billimoria@gmail.com>
Signed-off-by: Tobin C. Harding <me@tobin.cc>