openwrt/staging/blogic.git
7 years agonetlink: don't send unknown nsid
Nicolas Dichtel [Thu, 1 Jun 2017 08:00:07 +0000 (10:00 +0200)]
netlink: don't send unknown nsid

The NETLINK_F_LISTEN_ALL_NSID otion enables to listen all netns that have a
nsid assigned into the netns where the netlink socket is opened.
The nsid is sent as metadata to userland, but the existence of this nsid is
checked only for netns that are different from the socket netns. Thus, if
no nsid is assigned to the socket netns, NETNSA_NSID_NOT_ASSIGNED is
reported to the userland. This value is confusing and useless.
After this patch, only valid nsid are sent to userland.

Reported-by: Flavio Leitner <fbl@sysclose.org>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqlcnic: Fix a sleep-in-atomic bug in qlcnic_82xx_hw_write_wx_2M and qlcnic_82xx_hw_re...
Jia-Ju Bai [Thu, 1 Jun 2017 08:18:10 +0000 (16:18 +0800)]
qlcnic: Fix a sleep-in-atomic bug in qlcnic_82xx_hw_write_wx_2M and qlcnic_82xx_hw_read_wx_2M

The driver may sleep under a write spin lock, and the function
call path is:
qlcnic_82xx_hw_write_wx_2M (acquire the lock by write_lock_irqsave)
  crb_win_lock
    qlcnic_pcie_sem_lock
      usleep_range
qlcnic_82xx_hw_read_wx_2M (acquire the lock by write_lock_irqsave)
  crb_win_lock
    qlcnic_pcie_sem_lock
      usleep_range

To fix it, the usleep_range is replaced with udelay.

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agompls: fix clearing of dead nh_flags on link up
Roopa Prabhu [Wed, 31 May 2017 06:50:36 +0000 (23:50 -0700)]
mpls: fix clearing of dead nh_flags on link up

recent fixes to use WRITE_ONCE for nh_flags on link up,
accidently ended up leaving the deadflags on a nh. This patch
fixes the WRITE_ONCE to use freshly evaluated nh_flags.

Fixes: 39eb8cd17588 ("net: mpls: rt_nhn_alive and nh_flags should be accessed using READ_ONCE")
Reported-by: Satish Ashok <sashok@cumulusnetworks.com>
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Acked-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoisdn: Fix a sleep-in-atomic bug
Jia-Ju Bai [Wed, 31 May 2017 01:40:11 +0000 (09:40 +0800)]
isdn: Fix a sleep-in-atomic bug

The driver may sleep under a spin lock, the function call path is:
isdn_ppp_mp_receive (acquire the lock)
  isdn_ppp_mp_reassembly
    isdn_ppp_push_higher
      isdn_ppp_decompress
        isdn_ppp_ccp_reset_trans
          isdn_ppp_ccp_reset_alloc_state
            kzalloc(GFP_KERNEL) --> may sleep

To fixed it, the "GFP_KERNEL" is replaced with "GFP_ATOMIC".

Signed-off-by: Jia-Ju Bai <baijiaju1990@163.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: freescale: fix potential null pointer dereference
Gustavo A. R. Silva [Tue, 30 May 2017 22:38:43 +0000 (17:38 -0500)]
net: freescale: fix potential null pointer dereference

Add NULL check before dereferencing pointer _id_ in order to avoid
a potential NULL pointer dereference.

Addresses-Coverity-ID: 1397995
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: fix auto-loading of Marvell DSA driver
Russell King [Tue, 30 May 2017 20:38:18 +0000 (21:38 +0100)]
net: fix auto-loading of Marvell DSA driver

Auto-loading of the Marvell DSA driver has stopped working with recent
kernels.  This seems to be due to the change of binding for DSA devices,
moving them from the platform bus to the MDIO bus.

In order for module auto-loading to work, we need to provide a MODALIAS
string in the uevent file for the device.  However, the device core does
not automatically provide this, and needs each bus_type to implement a
uevent method to generate these strings.  The MDIO bus does not provide
such a method, so no MODALIAS string is provided:

.# cat /sys/bus/mdio_bus/devices/f1072004.mdio-mii\:04/uevent
DRIVER=mv88e6085
OF_NAME=switch
OF_FULLNAME=/soc/internal-regs/mdio@72004/switch@4
OF_COMPATIBLE_0=marvell,mv88e6085
OF_COMPATIBLE_N=1

In the case of OF-based devices, the solution is easy -
of_device_uevent_modalias() does the work for us.  After this is done,
the uevent file looks like this:

.# cat /sys/bus/mdio_bus/devices/f1072004.mdio-mii\:04/uevent
DRIVER=mv88e6085
OF_NAME=switch
OF_FULLNAME=/soc/internal-regs/mdio@72004/switch@4
OF_COMPATIBLE_0=marvell,mv88e6085
OF_COMPATIBLE_N=1
MODALIAS=of:NswitchT<NULL>Cmarvell,mv88e6085

which results in auto-loading of the Marvell DSA driver on Clearfog
platforms.

Fixes: c0405563a613 ("ARM: dts: armada-388-clearfog: Utilize new DSA binding")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: phy: fix marvell phy status reading
Russell King [Tue, 30 May 2017 15:21:51 +0000 (16:21 +0100)]
net: phy: fix marvell phy status reading

The Marvell driver incorrectly provides phydev->lp_advertising as the
logical and of the link partner's advert and our advert.  This is
incorrect - this field is supposed to store the link parter's unmodified
advertisment.

This allows ethtool to report the correct link partner auto-negotiation
status.

Fixes: be937f1f89ca ("Marvell PHY m88e1111 driver fix")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotcp: reinitialize MTU probing when setting MSS in a TCP repair
Douglas Caetano dos Santos [Fri, 26 May 2017 17:28:00 +0000 (14:28 -0300)]
tcp: reinitialize MTU probing when setting MSS in a TCP repair

MTU probing initialization occurred only at connect() and at SYN or
SYN-ACK reception, but the former sets MSS to either the default or the
user set value (through TCP_MAXSEG sockopt) and the latter never happens
with repaired sockets.

The result was that, with MTU probing enabled and unless TCP_MAXSEG
sockopt was used before connect(), probing would be stuck at
tcp_base_mss value until tcp_probe_interval seconds have passed.

Signed-off-by: Douglas Caetano dos Santos <douglascs@taghos.com.br>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'mlx4-mlx5-MAINTAINERS-update'
David S. Miller [Tue, 30 May 2017 18:18:16 +0000 (14:18 -0400)]
Merge branch 'mlx4-mlx5-MAINTAINERS-update'

Tariq Toukan says:

====================
MAINTAINERS updates

This patchset contains updates to the MAINTAINERS file.
In the first patch, I replace Yishai as the maintainer of
the mlx4_core driver.

In the other two patches we move an RDMA header file from
the list of the mlx4/mlx5 core driver into the respective
IB driver, where it belongs.

Series generated against net commit:
468b0df61a51 Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMAINTAINERS: Move mlx5 rdma header file to IB driver charge
Tariq Toukan [Tue, 30 May 2017 08:44:06 +0000 (11:44 +0300)]
MAINTAINERS: Move mlx5 rdma header file to IB driver charge

It belongs there, should not be under mlx5 Core driver.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMAINTAINERS: Move mlx4 rdma header file to IB driver charge
Tariq Toukan [Tue, 30 May 2017 08:44:05 +0000 (11:44 +0300)]
MAINTAINERS: Move mlx4 rdma header file to IB driver charge

It belongs there, should not be under mlx4 Core driver.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMAINTAINERS: Update MELLANOX MLX4 core VPI driver maintainer
Tariq Toukan [Tue, 30 May 2017 08:44:04 +0000 (11:44 +0300)]
MAINTAINERS: Update MELLANOX MLX4 core VPI driver maintainer

Add myself as a maintainer for mlx4 core driver,
replacing Yishai Hadas.

Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet/mlx5: avoid build warning for uniprocessor
Arnd Bergmann [Mon, 29 May 2017 13:00:17 +0000 (15:00 +0200)]
net/mlx5: avoid build warning for uniprocessor

Building the driver with CONFIG_SMP disabled results in a harmless
warning:

ethernet/mellanox/mlx5/core/main.c: In function 'mlx5_irq_set_affinity_hint':
ethernet/mellanox/mlx5/core/main.c:615:6: error: unused variable 'irq' [-Werror=unused-variable]

It's better to express the conditional compilation using IS_ENABLED()
here, as that lets the compiler see what the intented use for the variable
is, and that it can be silently discarded.

Fixes: b665d98edc9a ("net/mlx5: Tolerate irq_set_affinity_hint() failures")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: mv88e6xxx: Add missing static to stub functions
Arnd Bergmann [Mon, 29 May 2017 12:56:01 +0000 (14:56 +0200)]
net: dsa: mv88e6xxx: Add missing static to stub functions

'static' was not enough, the helpers must be 'static inline'

net/dsa/mv88e6xxx/global2.h:123:12: error: 'mv88e6xxx_g2_misc_4_bit_port' defined but not used [-Werror=unused-function]
net/dsa/mv88e6xxx/global2.h:117:12: error: 'mv88e6xxx_g2_pvt_write' defined but not used [-Werror=unused-function]

Fixes: c21fbe29f858 ("net: dsa: mv88e6xxx: Add missing static to stub functions")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoqed: Don't log missing periodic stats by default
Mintz, Yuval [Mon, 29 May 2017 08:24:49 +0000 (11:24 +0300)]
qed: Don't log missing periodic stats by default

Current implementation lacks the logic for providing management
firmware with RDMA-related statistics; [much] worse than that -
it logs such events by default to system logs.

Since the statistics' gathering is done periodically, using sufficiently
new management firmware the system logs would get filled with these
unnecessary prints.

For now, reduce the verbosity of the log so that it would not be
logged by default.

Fixes: 6c75424612a7 ("qed: Add support for NCSI statistics")
Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoDocumentation: networking: add DPAA Ethernet document
Madalin Bucur [Mon, 29 May 2017 06:22:06 +0000 (09:22 +0300)]
Documentation: networking: add DPAA Ethernet document

Signed-off-by: Madalin Bucur <madalin.bucur@nxp.com>
Signed-off-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agocxgb4: avoid crash on PCI error recovery path
Guilherme G. Piccoli [Mon, 29 May 2017 02:07:01 +0000 (23:07 -0300)]
cxgb4: avoid crash on PCI error recovery path

During PCI error recovery process, specifically on eeh_err_detected()
we might have a NULL netdev struct, hence a direct dereference will
lead to a kernel oops. This was observed with latest upstream kernel
(v4.12-rc2) on Chelsio adapter T422-CR in PowerPC machines.

This patch checks for NULL pointer and avoids the crash, both in
eeh_err_detected() and eeh_resume(). Also, we avoid to trigger
a fatal error or to try disabling interrupts on FW during PCI
error recovery, because: (a) driver might not be able to accurately
access PCI regions in this case, and (b) trigger a fatal error
_during_ the recovery steps is a mistake that could prevent the
recovery path to complete successfully.

Reported-by: Harsha Thyagaraja <hathyaga@in.ibm.com>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf
David S. Miller [Tue, 30 May 2017 03:16:54 +0000 (23:16 -0400)]
Merge git://git./pub/scm/linux/kernel/git/pablo/nf

Pablo Neira Ayuso says:

====================
Netfilter fixes for net

The following patchset contains Netfilter fixes for your net tree,
they are:

1) Conntrack SCTP CRC32c checksum mangling may operate on non-linear
   skbuff, patch from Davide Caratti.

2) nf_tables rb-tree set backend does not handle element re-addition
   after deletion in the same transaction, leading to infinite loop.

3) Atomically unclear the IPS_SRC_NAT_DONE_BIT on nat module removal,
   from Liping Zhang.

4) Conntrack hashtable resizing while ctnetlink dump is progress leads
   to a dead reference to released objects in the lists, also from
   Liping.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: mv88e6xxx: Add missing static to stub functions
Andrew Lunn [Sun, 28 May 2017 15:25:14 +0000 (17:25 +0200)]
net: dsa: mv88e6xxx: Add missing static to stub functions

Stub functions in header files need to be static, or we can have
multiple definitions errors.

Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: 6335e9f2446b ("net: dsa: mv88e6xxx: mv88e6390X SERDES support")
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agohdlcdrv: Fix divide by zero in hdlcdrv_ioctl
Firo Yang [Fri, 26 May 2017 14:37:38 +0000 (22:37 +0800)]
hdlcdrv: Fix divide by zero in hdlcdrv_ioctl

syszkaller fuzzer triggered a divide by zero, when set calibration
through ioctl().

To fix it, test 'bitrate' if it is negative or 0, just return -EINVAL.

Reported-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Firo Yang <firogm@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: dsa: mv88e6xxx: Add eeprom-length to binding
Andrew Lunn [Thu, 25 May 2017 23:44:43 +0000 (01:44 +0200)]
net: dsa: mv88e6xxx: Add eeprom-length to binding

The binding documentation for the mv88e6xxx switch is missing the
eeprom-length property, which has been implemented since May 2016,
commit f8cd8753def0 ("dsa: mv88e6xxx: Handle eeprom-length property")

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'led_fixes_for_4-12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Fri, 26 May 2017 21:02:30 +0000 (14:02 -0700)]
Merge tag 'led_fixes_for_4-12-rc3' of git://git./linux/kernel/git/j.anaszewski/linux-leds

Pull LED fix from Jacek Anaszewski:
 "A single LED fix for 4.12-rc3.

  leds-pca955x driver uses only i2c_smbus API and thus it should pass
  I2C_FUNC_SMBUS_BYTE_DATA flag to i2c_check_functionality"

* tag 'led_fixes_for_4-12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
  leds: pca955x: Correct I2C Functionality

7 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Linus Torvalds [Fri, 26 May 2017 20:51:01 +0000 (13:51 -0700)]
Merge git://git./linux/kernel/git/davem/net

Pull networking fixes from David Miller:

 1) Fix state pruning in bpf verifier wrt. alignment, from Daniel
    Borkmann.

 2) Handle non-linear SKBs properly in SCTP ICMP parsing, from Davide
    Caratti.

 3) Fix bit field definitions for rss_hash_type of descriptors in mlx5
    driver, from Jesper Brouer.

 4) Defer slave->link updates until bonding is ready to do a full commit
    to the new settings, from Nithin Sujir.

 5) Properly reference count ipv4 FIB metrics to avoid use after free
    situations, from Eric Dumazet and several others including Cong Wang
    and Julian Anastasov.

 6) Fix races in llc_ui_bind(), from Lin Zhang.

 7) Fix regression of ESP UDP encapsulation for TCP packets, from
    Steffen Klassert.

 8) Fix mdio-octeon driver Kconfig deps, from Randy Dunlap.

 9) Fix regression in setting DSCP on ipv6/GRE encapsulation, from Peter
    Dawson.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits)
  ipv4: add reference counting to metrics
  net: ethernet: ax88796: don't call free_irq without request_irq first
  ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets
  sctp: fix ICMP processing if skb is non-linear
  net: llc: add lock_sock in llc_ui_bind to avoid a race condition
  bonding: Don't update slave->link until ready to commit
  test_bpf: Add a couple of tests for BPF_JSGE.
  bpf: add various verifier test cases
  bpf: fix wrong exposure of map_flags into fdinfo for lpm
  bpf: add bpf_clone_redirect to bpf_helper_changes_pkt_data
  bpf: properly reset caller saved regs after helper call and ld_abs/ind
  bpf: fix incorrect pruning decision when alignment must be tracked
  arp: fixed -Wuninitialized compiler warning
  tcp: avoid fastopen API to be used on AF_UNSPEC
  net: move somaxconn init from sysctl code
  net: fix potential null pointer dereference
  geneve: fix fill_info when using collect_metadata
  virtio-net: enable TSO/checksum offloads for Q-in-Q vlans
  be2net: Fix offload features for Q-in-Q packets
  vlan: Fix tcp checksum offloads in Q-in-Q vlans
  ...

7 years agoMerge tag 'xfs-4.12-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Linus Torvalds [Fri, 26 May 2017 19:13:08 +0000 (12:13 -0700)]
Merge tag 'xfs-4.12-fixes-2' of git://git./fs/xfs/xfs-linux

Pull XFS fixes from Darrick Wong:
 "A few miscellaneous bug fixes & cleanups:

   - Fix indlen block reservation accounting bug when splitting delalloc
     extent

   - Fix warnings about unused variables that appeared in -rc1.

   - Don't spew errors when bmapping a local format directory

   - Fix an off-by-one error in a delalloc eof assertion

   - Make fsmap only return inode information for CAP_SYS_ADMIN

   - Fix a potential mount time deadlock recovering cow extents

   - Fix unaligned memory access in _btree_visit_blocks

   - Fix various SEEK_HOLE/SEEK_DATA bugs"

* tag 'xfs-4.12-fixes-2' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
  xfs: Move handling of missing page into one place in xfs_find_get_desired_pgoff()
  xfs: Fix off-by-in in loop termination in xfs_find_get_desired_pgoff()
  xfs: Fix missed holes in SEEK_HOLE implementation
  xfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff()
  xfs: fix unaligned access in xfs_btree_visit_blocks
  xfs: avoid mount-time deadlock in CoW extent recovery
  xfs: only return detailed fsmap info if the caller has CAP_SYS_ADMIN
  xfs: bad assertion for delalloc an extent that start at i_size
  xfs: fix warnings about unused stack variables
  xfs: BMAPX shouldn't barf on inline-format directories
  xfs: fix indlen accounting error on partial delalloc conversion

7 years agoipv4: add reference counting to metrics
Eric Dumazet [Thu, 25 May 2017 21:27:35 +0000 (14:27 -0700)]
ipv4: add reference counting to metrics

Andrey Konovalov reported crashes in ipv4_mtu()

I could reproduce the issue with KASAN kernels, between
10.246.7.151 and 10.246.7.152 :

1) 20 concurrent netperf -t TCP_RR -H 10.246.7.152 -l 1000 &

2) At the same time run following loop :
while :
do
 ip ro add 10.246.7.152 dev eth0 src 10.246.7.151 mtu 1500
 ip ro del 10.246.7.152 dev eth0 src 10.246.7.151 mtu 1500
done

Cong Wang attempted to add back rt->fi in commit
82486aa6f1b9 ("ipv4: restore rt->fi for reference counting")
but this proved to add some issues that were complex to solve.

Instead, I suggested to add a refcount to the metrics themselves,
being a standalone object (in particular, no reference to other objects)

I tried to make this patch as small as possible to ease its backport,
instead of being super clean. Note that we believe that only ipv4 dst
need to take care of the metric refcount. But if this is wrong,
this patch adds the basic infrastructure to extend this to other
families.

Many thanks to Julian Anastasov for reviewing this patch, and Cong Wang
for his efforts on this problem.

Fixes: 2860583fe840 ("ipv4: Kill rt->fi")
Signed-off-by: Eric Dumazet <edumazet@google.com>
Reported-by: Andrey Konovalov <andreyknvl@google.com>
Reviewed-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: ethernet: ax88796: don't call free_irq without request_irq first
Uwe Kleine-König [Thu, 25 May 2017 20:54:53 +0000 (22:54 +0200)]
net: ethernet: ax88796: don't call free_irq without request_irq first

The function ax_init_dev (which is called only from the driver's .probe
function) calls free_irq in the error path without having requested the
irq in the first place. So drop the free_irq call in the error path.

Fixes: 825a2ff1896e ("AX88796 network driver")
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets
Peter Dawson [Thu, 25 May 2017 20:35:18 +0000 (06:35 +1000)]
ip6_tunnel, ip6_gre: fix setting of DSCP on encapsulated packets

This fix addresses two problems in the way the DSCP field is formulated
 on the encapsulating header of IPv6 tunnels.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=195661

1) The IPv6 tunneling code was manipulating the DSCP field of the
 encapsulating packet using the 32b flowlabel. Since the flowlabel is
 only the lower 20b it was incorrect to assume that the upper 12b
 containing the DSCP and ECN fields would remain intact when formulating
 the encapsulating header. This fix handles the 'inherit' and
 'fixed-value' DSCP cases explicitly using the extant dsfield u8 variable.

2) The use of INET_ECN_encapsulate(0, dsfield) in ip6_tnl_xmit was
 incorrect and resulted in the DSCP value always being set to 0.

Commit 90427ef5d2a4 ("ipv6: fix flow labels when the traffic class
 is non-0") caused the regression by masking out the flowlabel
 which exposed the incorrect handling of the DSCP portion of the
 flowlabel in ip6_tunnel and ip6_gre.

Fixes: 90427ef5d2a4 ("ipv6: fix flow labels when the traffic class is non-0")
Signed-off-by: Peter Dawson <peter.a.dawson@boeing.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosctp: fix ICMP processing if skb is non-linear
Davide Caratti [Thu, 25 May 2017 17:14:56 +0000 (19:14 +0200)]
sctp: fix ICMP processing if skb is non-linear

sometimes ICMP replies to INIT chunks are ignored by the client, even if
the encapsulated SCTP headers match an open socket. This happens when the
ICMP packet is carried by a paged skb: use skb_header_pointer() to read
packet contents beyond the SCTP header, so that chunk header and initiate
tag are validated correctly.

v2:
- don't use skb_header_pointer() to read the transport header, since
  icmp_socket_deliver() already puts these 8 bytes in the linear area.
- change commit message to make specific reference to INIT chunks.

Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: llc: add lock_sock in llc_ui_bind to avoid a race condition
linzhang [Thu, 25 May 2017 06:07:18 +0000 (14:07 +0800)]
net: llc: add lock_sock in llc_ui_bind to avoid a race condition

There is a race condition in llc_ui_bind if two or more processes/threads
try to bind a same socket.

If more processes/threads bind a same socket success that will lead to
two problems, one is this action is not what we expected, another is
will lead to kernel in unstable status or oops(in my simple test case,
cause llc2.ko can't unload).

The current code is test SOCK_ZAPPED bit to avoid a process to
bind a same socket twice but that is can't avoid more processes/threads
try to bind a same socket at the same time.

So, add lock_sock in llc_ui_bind like others, such as llc_ui_connect.

Signed-off-by: Lin Zhang <xiaolou4617@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 26 May 2017 18:05:22 +0000 (11:05 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

Pull block fixes from Jens Axboe:
 "A collection of fixes that should go into this series. This contains:

   - A set of NVMe fixes, pulled from Christoph. This includes a set of
     fixes for the fiber channel bits from James Smart, rdma queue depth
     fix from Marta, controller removal fixes from Ming, and some more
     APST quirk updates from Andy.

   - A blk-mq debugfs fix from Bart, fixing a problem with the
     untangling of the sysfs and debugfs blk-mq bits that was added in
     this series.

   - Error code fix in add_partition() from Dan.

   - A small series of fixes for the new blk-throttle code from Shaohua"

* 'for-linus' of git://git.kernel.dk/linux-block: (21 commits)
  blk-mq: Only register debugfs attributes for blk-mq queues
  nvme: Quirk APST on Intel 600P/P3100 devices
  nvme: only setup block integrity if supported by the driver
  nvme: replace is_flags field in nvme_ctrl_ops with a flags field
  nvme-pci: consistencly use ctrl->device for logging
  partitions/msdos: FreeBSD UFS2 file systems are not recognized
  block: fix an error code in add_partition()
  blk-throttle: force user to configure all settings for io.low
  blk-throttle: respect 0 bps/iops settings for io.low
  blk-throttle: output some debug info in trace
  blk-throttle: add hierarchy support for latency target and idle time
  nvme_fc: remove extra controller reference taken on reconnect
  nvme_fc: correct nvme status set on abort
  nvme_fc: set logging level on resets/deletes
  nvme_fc: revise comment on teardown
  nvme_fc: Support ctrl_loss_tmo
  nvme_fc: get rid of local reconnect_delay
  blk-mq: remove blk_mq_abort_requeue_list()
  nvme: avoid to use blk_mq_abort_requeue_list()
  nvme: use blk_mq_start_hw_queues() in nvme_kill_queues()
  ...

7 years agoMerge tag 'pci-v4.12-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaa...
Linus Torvalds [Fri, 26 May 2017 17:51:18 +0000 (10:51 -0700)]
Merge tag 'pci-v4.12-fixes-1' of git://git./linux/kernel/git/helgaas/pci

Pull PCI fixes from Bjorn Helgaas:

 - fix PCI_ENDPOINT build error (merged for v4.12)

 - fix Switchtec driver (merged for v4.12)

 - fix imx6 config read timeouts, fallout from changing to non-postable
   reads

 - add PM "needs_resume" flag for i915 suspend issue

* tag 'pci-v4.12-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
  PCI/PM: Add needs_resume flag to avoid suspend complete optimization
  PCI: imx6: Fix config read timeout handling
  switchtec: Fix minor bug with partition ID register
  switchtec: Use new cdev_device_add() helper function
  PCI: endpoint: Make PCI_ENDPOINT depend on HAS_DMA

7 years agoMerge tag 'ceph-for-4.12-rc3' of git://github.com/ceph/ceph-client
Linus Torvalds [Fri, 26 May 2017 16:35:22 +0000 (09:35 -0700)]
Merge tag 'ceph-for-4.12-rc3' of git://github.com/ceph/ceph-client

Pul ceph fixes from Ilya Dryomov:
 "A bunch of make W=1 and static checker fixups, a RECONNECT_SEQ
  messenger patch from Zheng and Luis' fallocate fix"

* tag 'ceph-for-4.12-rc3' of git://github.com/ceph/ceph-client:
  ceph: check that the new inode size is within limits in ceph_fallocate()
  libceph: cleanup old messages according to reconnect seq
  libceph: NULL deref on crush_decode() error path
  libceph: fix error handling in process_one_ticket()
  libceph: validate blob_struct_v in process_one_ticket()
  libceph: drop version variable from ceph_monmap_decode()
  libceph: make ceph_msg_data_advance() return void
  libceph: use kbasename() and kill ceph_file_part()

7 years agoMerge tag 'mmc-v4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Fri, 26 May 2017 16:05:35 +0000 (09:05 -0700)]
Merge tag 'mmc-v4.12-rc2' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "This contains fixes to make the WiFi work again for the ARM64 Hikey
  board.

  Together with a couple of DTS updates for the Hikey board we have also
  extended the mmc pwrseq_simple, to support a new power-off-delay-us DT
  property, as that was required to enable a graceful power off sequence
  for the WiFi chip"

* tag 'mmc-v4.12-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  arm64: dts: hikey: Fix WiFi support
  arm64: dts: hi6220: Move board data from the dwmmc nodes to hikey dts
  arm64: dts: hikey: Add the SYS_5V and the VDD_3V3 regulators
  arm64: dts: hi6220: Move the fixed_5v_hub regulator to the hikey dts
  arm64: dts: hikey: Add clock for the pmic mfd
  mfd: dts: hi655x: Add clock binding for the pmic
  mmc: pwrseq_simple: Parse DTS for the power-off-delay-us property
  mmc: dt: pwrseq-simple: Invent power-off-delay-us

7 years agoMerge tag 'sound-4.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...
Linus Torvalds [Fri, 26 May 2017 16:03:09 +0000 (09:03 -0700)]
Merge tag 'sound-4.12-rc3' of git://git./linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "This contains a few HD-audio device-specific quirks and an endianess
  fix for USB-audio, as well as the update of quirk model list document.
  All fixes are small and trivial.

  The document update could have been postponed, but it's a good thing
  for user and has absolutely zero risk of breakage, so included here"

* tag 'sound-4.12-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
  ALSA: hda - apply STAC_9200_DELL_M22 quirk for Dell Latitude D430
  ALSA: hda - Update the list of quirk models
  ALSA: hda - Provide dual-codecs model option for a few Realtek codecs
  ALSA: hda - Apply dual-codec quirk for MSI Z270-Gaming mobo
  ALSA: hda - No loopback on ALC299 codec
  ALSA: usb-audio: fix Amanero Combo384 quirk on big-endian hosts

7 years agoMerge tag 'drm-fixes-for-v4.12-rc3' of git://people.freedesktop.org/~airlied/linux
Linus Torvalds [Fri, 26 May 2017 15:54:06 +0000 (08:54 -0700)]
Merge tag 'drm-fixes-for-v4.12-rc3' of git://people.freedesktop.org/~airlied/linux

Pull drm fixes from Dave Airlie:
 "Not a whole lot happening here, a set of amdgpu fixes and one core
  deadlock fix, and some misc drivers fixes"

* tag 'drm-fixes-for-v4.12-rc3' of git://people.freedesktop.org/~airlied/linux:
  drm/amdgpu: fix null point error when rmmod amdgpu.
  drm/amd/powerplay: fix a signedness bugs
  drm/amdgpu: fix NULL pointer panic of emit_gds_switch
  drm/radeon: Unbreak HPD handling for r600+
  drm/amd/powerplay/smu7: disable mclk switching for high refresh rates
  drm/amd/powerplay/smu7: add vblank check for mclk switching (v2)
  drm/radeon/ci: disable mclk switching for high refresh rates (v2)
  drm/amdgpu/ci: disable mclk switching for high refresh rates (v2)
  drm/amdgpu: fix fundamental suspend/resume issue
  drm/gma500/psb: Actually use VBT mode when it is found
  drm: Fix deadlock retry loop in page_flip_ioctl
  drm: qxl: Delay entering atomic context during cursor update
  drm/radeon: Fix oops upon driver load on PowerXpress laptops

7 years agoPCI/msi: fix the pci_alloc_irq_vectors_affinity stub
Christoph Hellwig [Sat, 20 May 2017 16:59:54 +0000 (18:59 +0200)]
PCI/msi: fix the pci_alloc_irq_vectors_affinity stub

We need to return an error for any call that asks for MSI / MSI-X
vectors only, so that non-trivial fallback logic can work properly.

Also valid dev->irq and use the "correct" errno value based on feedback
from Linus.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Fixes: aff17164 ("PCI: Provide sensible IRQ vector alloc/free routines")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
7 years agoMerge branch 'nvme-4.12' of git://git.infradead.org/nvme into for-linus
Jens Axboe [Fri, 26 May 2017 15:11:19 +0000 (09:11 -0600)]
Merge branch 'nvme-4.12' of git://git.infradead.org/nvme into for-linus

Christoph writes:

"A couple of fixes for the next rc on the nvme front. Various FC fixes
from James, controller removal fixes from Ming (including a block layer
patch), a APST related device quirk from Andy, a RDMA fix for small
queue depth device from Marta, as well as fixes for the lack of
metadata support in non-PCIe drivers and the printk logging format from
me."

7 years agoblk-mq: Only register debugfs attributes for blk-mq queues
Bart Van Assche [Thu, 25 May 2017 23:38:06 +0000 (16:38 -0700)]
blk-mq: Only register debugfs attributes for blk-mq queues

The code in blk-mq-debugfs.c assumes that it is working on a blk-mq
queue and is not intended to work on a blk-sq queue. Hence only
register blk-mq debugfs attributes for blk-mq queues.

Fixes: commit 9c1051aacde8 ("blk-mq: untangle debugfs and sysfs")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
7 years agonvme: Quirk APST on Intel 600P/P3100 devices
Andy Lutomirski [Wed, 24 May 2017 22:06:31 +0000 (15:06 -0700)]
nvme: Quirk APST on Intel 600P/P3100 devices

They have known firmware bugs.  A fix is apparently in the works --
once fixed firmware is available, someone from Intel (Hi, Keith!)
can adjust the quirk accordingly.

Cc: stable@vger.kernel.org # v4.11
Cc: Kai-Heng Feng <kai.heng.feng@canonical.com>
Cc: Mario Limonciello <mario_limonciello@dell.com>
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Signed-off-by: Christoph Hellwig <hch@lst.de>
7 years agonvme: only setup block integrity if supported by the driver
Christoph Hellwig [Sat, 20 May 2017 13:14:45 +0000 (15:14 +0200)]
nvme: only setup block integrity if supported by the driver

Currently only the PCIe driver supports metadata, so we should not claim
integrity support for the other drivers.  This prevents nasty crashes
with targets that advertise metadata support on fabrics.

Also use the opportunity to factor out some code into a separate helper
that isn't even compiled if CONFIG_BLK_DEV_INTEGRITY is disabled.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
7 years agonvme: replace is_flags field in nvme_ctrl_ops with a flags field
Christoph Hellwig [Sat, 20 May 2017 13:14:44 +0000 (15:14 +0200)]
nvme: replace is_flags field in nvme_ctrl_ops with a flags field

So that we can have more flags for transport-specific behavior.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
7 years agonvme-pci: consistencly use ctrl->device for logging
Christoph Hellwig [Sat, 20 May 2017 13:14:43 +0000 (15:14 +0200)]
nvme-pci: consistencly use ctrl->device for logging

This is what most of the code already does and gives much more useful
prefixes than the device embedded in the pci_dev.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Keith Busch <keith.busch@intel.com>
7 years agoMerge branch 'drm-fixes-4.12' of git://people.freedesktop.org/~agd5f/linux into drm...
Dave Airlie [Fri, 26 May 2017 01:51:55 +0000 (11:51 +1000)]
Merge branch 'drm-fixes-4.12' of git://people.freedesktop.org/~agd5f/linux into drm-fixes

A bunch of bug fixes:
- Fix display flickering on some chips at high refresh rates
- suspend/resume fix
- hotplug fix
- a couple of segfault fixes for certain cases

* 'drm-fixes-4.12' of git://people.freedesktop.org/~agd5f/linux:
  drm/amdgpu: fix null point error when rmmod amdgpu.
  drm/amd/powerplay: fix a signedness bugs
  drm/amdgpu: fix NULL pointer panic of emit_gds_switch
  drm/radeon: Unbreak HPD handling for r600+
  drm/amd/powerplay/smu7: disable mclk switching for high refresh rates
  drm/amd/powerplay/smu7: add vblank check for mclk switching (v2)
  drm/radeon/ci: disable mclk switching for high refresh rates (v2)
  drm/amdgpu/ci: disable mclk switching for high refresh rates (v2)
  drm/amdgpu: fix fundamental suspend/resume issue

7 years agoMerge tag 'drm-misc-fixes-2017-05-25' of git://anongit.freedesktop.org/git/drm-misc...
Dave Airlie [Fri, 26 May 2017 01:51:28 +0000 (11:51 +1000)]
Merge tag 'drm-misc-fixes-2017-05-25' of git://anongit.freedesktop.org/git/drm-misc into drm-fixes

Core Changes:
- Don't drop vblank reference more than once in cases of ww retry (Daniel)

Driver Changes:
- radeon: Fix oops during radeon probe trying to reference wrong device (Lukas)
- qxl: Avoid sleeping while in atomic context on cursor update (Gabriel)
- gma500: Use VBT mode instead of pre-programmed mode for LVDS (Patrik)

Cc: Lukas Wunner <lukas@wunner.de>
Cc: Gabriel Krisman Bertazi <krisman@collabora.co.uk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
* tag 'drm-misc-fixes-2017-05-25' of git://anongit.freedesktop.org/git/drm-misc:
  drm/gma500/psb: Actually use VBT mode when it is found
  drm: Fix deadlock retry loop in page_flip_ioctl
  drm: qxl: Delay entering atomic context during cursor update
  drm/radeon: Fix oops upon driver load on PowerXpress laptops

7 years agobonding: Don't update slave->link until ready to commit
Nithin Sujir [Thu, 25 May 2017 02:45:17 +0000 (19:45 -0700)]
bonding: Don't update slave->link until ready to commit

In the loadbalance arp monitoring scheme, when a slave link change is
detected, the slave->link is immediately updated and slave_state_changed
is set. Later down the function, the rtnl_lock is acquired and the
changes are committed, updating the bond link state.

However, the acquisition of the rtnl_lock can fail. The next time the
monitor runs, since slave->link is already updated, it determines that
link is unchanged. This results in the bond link state permanently out
of sync with the slave link.

This patch modifies bond_loadbalance_arp_mon() to handle link changes
identical to bond_ab_arp_{inspect/commit}(). The new link state is
maintained in slave->new_link until we're ready to commit at which point
it's copied into slave->link.

NOTE: miimon_{inspect/commit}() has a more complex state machine
requiring the use of the bond_{propose,commit}_link_state() functions
which maintains the intermediate state in slave->link_new_state. The arp
monitors don't require that.

Testing: This bug is very easy to reproduce with the following steps.
1. In a loop, toggle a slave link of a bond slave interface.
2. In a separate loop, do ifconfig up/down of an unrelated interface to
create contention for rtnl_lock.
Within a few iterations, the bond link goes out of sync with the slave
link.

Signed-off-by: Nithin Nayak Sujir <nsujir@tintri.com>
Cc: Mahesh Bandewar <maheshb@google.com>
Cc: Jay Vosburgh <jay.vosburgh@canonical.com>
Acked-by: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotest_bpf: Add a couple of tests for BPF_JSGE.
David Daney [Wed, 24 May 2017 23:35:49 +0000 (16:35 -0700)]
test_bpf: Add a couple of tests for BPF_JSGE.

Some JITs can optimize comparisons with zero.  Add a couple of
BPF_JSGE tests against immediate zero.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'bpf-fixes'
David S. Miller [Thu, 25 May 2017 17:44:29 +0000 (13:44 -0400)]
Merge branch 'bpf-fixes'

Daniel Borkmann says:

====================
Various BPF fixes

Follow-up to fix incorrect pruning when alignment tracking is
in use and to properly clear regs after call to not leave stale
data behind, also a fix that adds bpf_clone_redirect to the
bpf_helper_changes_pkt_data helper and exposes correct map_flags
for lpm map into fdinfo. For details, please see individual
patches.

v1 -> v2:
  - Reworked first patch so that env->strict_alignment is the
    final indicator on whether we have to deal with strict
    alignment rather than having CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
    checks on various locations, so only checking env->strict_alignment
    is sufficient after that. Thanks for spotting, Dave!
  - Added patch 3 and 4.
  - Rest as is.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: add various verifier test cases
Daniel Borkmann [Wed, 24 May 2017 23:05:09 +0000 (01:05 +0200)]
bpf: add various verifier test cases

This patch adds various verifier test cases:

1) A test case for the pruning issue when tracking alignment
   is used.
2) Various PTR_TO_MAP_VALUE_OR_NULL tests to make sure pointer
   arithmetic turns such register into UNKNOWN_VALUE type.
3) Test cases for the special treatment of LD_ABS/LD_IND to
   make sure verifier doesn't break calling convention here.
   Latter is needed, since f.e. arm64 JIT uses r1 - r5 for
   storing temporary data, so they really must be marked as
   NOT_INIT.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: fix wrong exposure of map_flags into fdinfo for lpm
Daniel Borkmann [Wed, 24 May 2017 23:05:08 +0000 (01:05 +0200)]
bpf: fix wrong exposure of map_flags into fdinfo for lpm

trie_alloc() always needs to have BPF_F_NO_PREALLOC passed in via
attr->map_flags, since it does not support preallocation yet. We
check the flag, but we never copy the flag into trie->map.map_flags,
which is later on exposed into fdinfo and used by loaders such as
iproute2. Latter uses this in bpf_map_selfcheck_pinned() to test
whether a pinned map has the same spec as the one from the BPF obj
file and if not, bails out, which is currently the case for lpm
since it exposes always 0 as flags.

Also copy over flags in array_map_alloc() and stack_map_alloc().
They always have to be 0 right now, but we should make sure to not
miss to copy them over at a later point in time when we add actual
flags for them to use.

Fixes: b95a5c4db09b ("bpf: add a longest prefix match trie map implementation")
Reported-by: Jarno Rajahalme <jarno@covalent.io>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: add bpf_clone_redirect to bpf_helper_changes_pkt_data
Daniel Borkmann [Wed, 24 May 2017 23:05:07 +0000 (01:05 +0200)]
bpf: add bpf_clone_redirect to bpf_helper_changes_pkt_data

The bpf_clone_redirect() still needs to be listed in
bpf_helper_changes_pkt_data() since we call into
bpf_try_make_head_writable() from there, thus we need
to invalidate prior pkt regs as well.

Fixes: 36bbef52c7eb ("bpf: direct packet write and access for helpers for clsact progs")
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: properly reset caller saved regs after helper call and ld_abs/ind
Daniel Borkmann [Wed, 24 May 2017 23:05:06 +0000 (01:05 +0200)]
bpf: properly reset caller saved regs after helper call and ld_abs/ind

Currently, after performing helper calls, we clear all caller saved
registers, that is r0 - r5 and fill r0 depending on struct bpf_func_proto
specification. The way we reset these regs can affect pruning decisions
in later paths, since we only reset register's imm to 0 and type to
NOT_INIT. However, we leave out clearing of other variables such as id,
min_value, max_value, etc, which can later on lead to pruning mismatches
due to stale data.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobpf: fix incorrect pruning decision when alignment must be tracked
Daniel Borkmann [Wed, 24 May 2017 23:05:05 +0000 (01:05 +0200)]
bpf: fix incorrect pruning decision when alignment must be tracked

Currently, when we enforce alignment tracking on direct packet access,
the verifier lets the following program pass despite doing a packet
write with unaligned access:

  0: (61) r2 = *(u32 *)(r1 +76)
  1: (61) r3 = *(u32 *)(r1 +80)
  2: (61) r7 = *(u32 *)(r1 +8)
  3: (bf) r0 = r2
  4: (07) r0 += 14
  5: (25) if r7 > 0x1 goto pc+4
   R0=pkt(id=0,off=14,r=0) R1=ctx R2=pkt(id=0,off=0,r=0)
   R3=pkt_end R7=inv,min_value=0,max_value=1 R10=fp
  6: (2d) if r0 > r3 goto pc+1
   R0=pkt(id=0,off=14,r=14) R1=ctx R2=pkt(id=0,off=0,r=14)
   R3=pkt_end R7=inv,min_value=0,max_value=1 R10=fp
  7: (63) *(u32 *)(r0 -4) = r0
  8: (b7) r0 = 0
  9: (95) exit

  from 6 to 8:
   R0=pkt(id=0,off=14,r=0) R1=ctx R2=pkt(id=0,off=0,r=0)
   R3=pkt_end R7=inv,min_value=0,max_value=1 R10=fp
  8: (b7) r0 = 0
  9: (95) exit

  from 5 to 10:
   R0=pkt(id=0,off=14,r=0) R1=ctx R2=pkt(id=0,off=0,r=0)
   R3=pkt_end R7=inv,min_value=2 R10=fp
  10: (07) r0 += 1
  11: (05) goto pc-6
  6: safe                           <----- here, wrongly found safe
  processed 15 insns

However, if we enforce a pruning mismatch by adding state into r8
which is then being mismatched in states_equal(), we find that for
the otherwise same program, the verifier detects a misaligned packet
access when actually walking that path:

  0: (61) r2 = *(u32 *)(r1 +76)
  1: (61) r3 = *(u32 *)(r1 +80)
  2: (61) r7 = *(u32 *)(r1 +8)
  3: (b7) r8 = 1
  4: (bf) r0 = r2
  5: (07) r0 += 14
  6: (25) if r7 > 0x1 goto pc+4
   R0=pkt(id=0,off=14,r=0) R1=ctx R2=pkt(id=0,off=0,r=0)
   R3=pkt_end R7=inv,min_value=0,max_value=1
   R8=imm1,min_value=1,max_value=1,min_align=1 R10=fp
  7: (2d) if r0 > r3 goto pc+1
   R0=pkt(id=0,off=14,r=14) R1=ctx R2=pkt(id=0,off=0,r=14)
   R3=pkt_end R7=inv,min_value=0,max_value=1
   R8=imm1,min_value=1,max_value=1,min_align=1 R10=fp
  8: (63) *(u32 *)(r0 -4) = r0
  9: (b7) r0 = 0
  10: (95) exit

  from 7 to 9:
   R0=pkt(id=0,off=14,r=0) R1=ctx R2=pkt(id=0,off=0,r=0)
   R3=pkt_end R7=inv,min_value=0,max_value=1
   R8=imm1,min_value=1,max_value=1,min_align=1 R10=fp
  9: (b7) r0 = 0
  10: (95) exit

  from 6 to 11:
   R0=pkt(id=0,off=14,r=0) R1=ctx R2=pkt(id=0,off=0,r=0)
   R3=pkt_end R7=inv,min_value=2
   R8=imm1,min_value=1,max_value=1,min_align=1 R10=fp
  11: (07) r0 += 1
  12: (b7) r8 = 0
  13: (05) goto pc-7                <----- mismatch due to r8
  7: (2d) if r0 > r3 goto pc+1
   R0=pkt(id=0,off=15,r=15) R1=ctx R2=pkt(id=0,off=0,r=15)
   R3=pkt_end R7=inv,min_value=2
   R8=imm0,min_value=0,max_value=0,min_align=2147483648 R10=fp
  8: (63) *(u32 *)(r0 -4) = r0
  misaligned packet access off 2+15+-4 size 4

The reason why we fail to see it in states_equal() is that the
third test in compare_ptrs_to_packet() ...

  if (old->off <= cur->off &&
      old->off >= old->range && cur->off >= cur->range)
          return true;

... will let the above pass. The situation we run into is that
old->off <= cur->off (14 <= 15), meaning that prior walked paths
went with smaller offset, which was later used in the packet
access after successful packet range check and found to be safe
already.

For example: Given is R0=pkt(id=0,off=0,r=0). Adding offset 14
as in above program to it, results in R0=pkt(id=0,off=14,r=0)
before the packet range test. Now, testing this against R3=pkt_end
with 'if r0 > r3 goto out' will transform R0 into R0=pkt(id=0,off=14,r=14)
for the case when we're within bounds. A write into the packet
at offset *(u32 *)(r0 -4), that is, 2 + 14 -4, is valid and
aligned (2 is for NET_IP_ALIGN). After processing this with
all fall-through paths, we later on check paths from branches.
When the above skb->mark test is true, then we jump near the
end of the program, perform r0 += 1, and jump back to the
'if r0 > r3 goto out' test we've visited earlier already. This
time, R0 is of type R0=pkt(id=0,off=15,r=0), and we'll prune
that part because this time we'll have a larger safe packet
range, and we already found that with off=14 all further insn
were already safe, so it's safe as well with a larger off.
However, the problem is that the subsequent write into the packet
with 2 + 15 -4 is then unaligned, and not caught by the alignment
tracking. Note that min_align, aux_off, and aux_off_align were
all 0 in this example.

Since we cannot tell at this time what kind of packet access was
performed in the prior walk and what minimal requirements it has
(we might do so in the future, but that requires more complexity),
fix it to disable this pruning case for strict alignment for now,
and let the verifier do check such paths instead. With that applied,
the test cases pass and reject the program due to misalignment.

Fixes: d1174416747d ("bpf: Track alignment of register values in the verifier.")
Reference: http://patchwork.ozlabs.org/patch/761909/
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoarp: fixed -Wuninitialized compiler warning
Ihar Hrachyshka [Wed, 24 May 2017 22:19:35 +0000 (15:19 -0700)]
arp: fixed -Wuninitialized compiler warning

Commit 7d472a59c0e5ec117220a05de6b370447fb6cb66 ("arp: always override
existing neigh entries with gratuitous ARP") introduced a compiler
warning:

net/ipv4/arp.c:880:35: warning: 'addr_type' may be used uninitialized in
this function [-Wmaybe-uninitialized]

While the code logic seems to be correct and doesn't allow the variable
to be used uninitialized, and the warning is not consistently
reproducible, it's still worth fixing it for other people not to waste
time looking at the warning in case it pops up in the build environment.
Yes, compiler is probably at fault, but we will need to accommodate.

Fixes: 7d472a59c0e5 ("arp: always override existing neigh entries with gratuitous ARP")
Signed-off-by: Ihar Hrachyshka <ihrachys@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agotcp: avoid fastopen API to be used on AF_UNSPEC
Wei Wang [Wed, 24 May 2017 16:59:31 +0000 (09:59 -0700)]
tcp: avoid fastopen API to be used on AF_UNSPEC

Fastopen API should be used to perform fastopen operations on the TCP
socket. It does not make sense to use fastopen API to perform disconnect
by calling it with AF_UNSPEC. The fastopen data path is also prone to
race conditions and bugs when using with AF_UNSPEC.

One issue reported and analyzed by Vegard Nossum is as follows:
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++
Thread A:                            Thread B:
------------------------------------------------------------------------
sendto()
 - tcp_sendmsg()
     - sk_stream_memory_free() = 0
         - goto wait_for_sndbuf
     - sk_stream_wait_memory()
        - sk_wait_event() // sleep
          |                          sendto(flags=MSG_FASTOPEN, dest_addr=AF_UNSPEC)
  |                           - tcp_sendmsg()
  |                              - tcp_sendmsg_fastopen()
  |                                 - __inet_stream_connect()
  |                                    - tcp_disconnect() //because of AF_UNSPEC
  |                                       - tcp_transmit_skb()// send RST
  |                                    - return 0; // no reconnect!
  |                           - sk_stream_wait_connect()
  |                                 - sock_error()
  |                                    - xchg(&sk->sk_err, 0)
  |                                    - return -ECONNRESET
- ... // wake up, see sk->sk_err == 0
    - skb_entail() on TCP_CLOSE socket

If the connection is reopened then we will send a brand new SYN packet
after thread A has already queued a buffer. At this point I think the
socket internal state (sequence numbers etc.) becomes messed up.

When the new connection is closed, the FIN-ACK is rejected because the
sequence number is outside the window. The other side tries to
retransmit,
but __tcp_retransmit_skb() calls tcp_trim_head() on an empty skb which
corrupts the skb data length and hits a BUG() in copy_and_csum_bits().
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Hence, this patch adds a check for AF_UNSPEC in the fastopen data path
and return EOPNOTSUPP to user if such case happens.

Fixes: cf60af03ca4e7 ("tcp: Fast Open client - sendmsg(MSG_FASTOPEN)")
Reported-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Wei Wang <weiwan@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: move somaxconn init from sysctl code
Roman Kapl [Wed, 24 May 2017 08:22:22 +0000 (10:22 +0200)]
net: move somaxconn init from sysctl code

The default value for somaxconn is set in sysctl_core_net_init(), but this
function is not called when kernel is configured without CONFIG_SYSCTL.

This results in the kernel not being able to accept TCP connections,
because the backlog has zero size. Usually, the user ends up with:
"TCP: request_sock_TCP: Possible SYN flooding on port 7. Dropping request.  Check SNMP counters."
If SYN cookies are not enabled the connection is rejected.

Before ef547f2ac16 (tcp: remove max_qlen_log), the effects were less
severe, because the backlog was always at least eight slots long.

Signed-off-by: Roman Kapl <roman.kapl@sysgo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: fix potential null pointer dereference
Gustavo A. R. Silva [Tue, 23 May 2017 23:18:37 +0000 (18:18 -0500)]
net: fix potential null pointer dereference

Add null check to avoid a potential null pointer dereference.

Addresses-Coverity-ID: 1408831
Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Acked-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agodrm/amdgpu: fix null point error when rmmod amdgpu.
Rex Zhu [Mon, 22 May 2017 05:11:41 +0000 (13:11 +0800)]
drm/amdgpu: fix null point error when rmmod amdgpu.

this bug happened when amdgpu load failed.

[   75.740951] BUG: unable to handle kernel paging request at 00000000000031c0
[   75.748167] IP: [<ffffffffa064a0e0>] amdgpu_fbdev_restore_mode+0x20/0x60 [amdgpu]
[   75.755774] PGD 0

[   75.759185] Oops: 0000 [#1] SMP
[   75.762408] Modules linked in: amdgpu(OE-) ttm(OE) drm_kms_helper(OE) drm(OE) i2c_algo_bit(E) fb_sys_fops(E) syscopyarea(E) sysfillrect(E) sysimgblt(E) rpcsec_gss_krb5(E) nfsv4(E) nfs(E) fscache(E) eeepc_wmi(E) asus_wmi(E) sparse_keymap(E) intel_rapl(E) snd_hda_codec_hdmi(E) snd_hda_codec_realtek(E) snd_hda_codec_generic(E) snd_hda_intel(E) snd_hda_codec(E) snd_hda_core(E) x86_pkg_temp_thermal(E) intel_powerclamp(E) snd_hwdep(E) snd_pcm(E) snd_seq_midi(E) coretemp(E) kvm_intel(E) snd_seq_midi_event(E) snd_rawmidi(E) kvm(E) snd_seq(E) joydev(E) snd_seq_device(E) snd_timer(E) irqbypass(E) crct10dif_pclmul(E) crc32_pclmul(E) mei_me(E) ghash_clmulni_intel(E) snd(E) aesni_intel(E) mei(E) soundcore(E) aes_x86_64(E) shpchp(E) serio_raw(E) lrw(E) acpi_pad(E) gf128mul(E) glue_helper(E) ablk_helper(E) mac_hid(E)
[   75.835574]  cryptd(E) parport_pc(E) ppdev(E) lp(E) nfsd(E) parport(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sunrpc(E) autofs4(E) hid_generic(E) usbhid(E) mxm_wmi(E) psmouse(E) e1000e(E) ptp(E) pps_core(E) ahci(E) libahci(E) wmi(E) video(E) i2c_hid(E) hid(E)
[   75.858489] CPU: 5 PID: 1603 Comm: rmmod Tainted: G           OE   4.9.0-custom #2
[   75.866183] Hardware name: System manufacturer System Product Name/Z170-A, BIOS 0901 08/31/2015
[   75.875050] task: ffff88045d1bbb80 task.stack: ffffc90002de4000
[   75.881094] RIP: 0010:[<ffffffffa064a0e0>]  [<ffffffffa064a0e0>] amdgpu_fbdev_restore_mode+0x20/0x60 [amdgpu]
[   75.891238] RSP: 0018:ffffc90002de7d48  EFLAGS: 00010286
[   75.896648] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
[   75.903933] RDX: 0000000000000000 RSI: ffff88045d1bbb80 RDI: 0000000000000286
[   75.911183] RBP: ffffc90002de7d50 R08: 0000000000000502 R09: 0000000000000004
[   75.918449] R10: 0000000000000000 R11: 0000000000000001 R12: ffff880464bf0000
[   75.925675] R13: ffffffffa0853000 R14: 0000000000000000 R15: 0000564e44f88210
[   75.932980] FS:  00007f13d5400700(0000) GS:ffff880476540000(0000) knlGS:0000000000000000
[   75.941238] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   75.947088] CR2: 00000000000031c0 CR3: 000000045fd0b000 CR4: 00000000003406e0
[   75.954332] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[   75.961566] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[   75.968834] Stack:
[   75.970881]  ffff880464bf0000 ffffc90002de7d60 ffffffffa0636592 ffffc90002de7d80
[   75.978454]  ffffffffa059015f ffff880464bf0000 ffff880464bf0000 ffffc90002de7da8
[   75.986076]  ffffffffa0595216 ffff880464bf0000 ffff880460f4d000 ffffffffa0853000
[   75.993692] Call Trace:
[   75.996177]  [<ffffffffa0636592>] amdgpu_driver_lastclose_kms+0x12/0x20 [amdgpu]
[   76.003700]  [<ffffffffa059015f>] drm_lastclose+0x2f/0xd0 [drm]
[   76.009777]  [<ffffffffa0595216>] drm_dev_unregister+0x16/0xd0 [drm]
[   76.016255]  [<ffffffffa0595944>] drm_put_dev+0x34/0x70 [drm]
[   76.022139]  [<ffffffffa062f365>] amdgpu_pci_remove+0x15/0x20 [amdgpu]
[   76.028800]  [<ffffffff81416499>] pci_device_remove+0x39/0xc0
[   76.034661]  [<ffffffff81531caa>] __device_release_driver+0x9a/0x140
[   76.041121]  [<ffffffff81531e58>] driver_detach+0xb8/0xc0
[   76.046575]  [<ffffffff81530c95>] bus_remove_driver+0x55/0xd0
[   76.052401]  [<ffffffff815325fc>] driver_unregister+0x2c/0x50
[   76.058244]  [<ffffffff81416289>] pci_unregister_driver+0x29/0x90
[   76.064466]  [<ffffffffa0596c5e>] drm_pci_exit+0x9e/0xb0 [drm]
[   76.070507]  [<ffffffffa0796d71>] amdgpu_exit+0x1c/0x32 [amdgpu]
[   76.076609]  [<ffffffff81104810>] SyS_delete_module+0x1a0/0x200
[   76.082627]  [<ffffffff810e2b1a>] ? rcu_eqs_enter.isra.36+0x4a/0x50
[   76.089001]  [<ffffffff8100392e>] do_syscall_64+0x6e/0x180
[   76.094583]  [<ffffffff817e1d2f>] entry_SYSCALL64_slow_path+0x25/0x25
[   76.101114] Code: 94 c0 c3 31 c0 5d c3 0f 1f 40 00 0f 1f 44 00 00 55 31 c0 48 89 e5 53 48 89 fb 48 c7 c7 1d 21 84 a0 e8 ab 77 b3 e0 e8 fc 8b d7 e0 <48> 8b bb c0 31 00 00 48 85 ff 74 09 e8 ff eb fc ff 85 c0 75 03
[   76.121432] RIP  [<ffffffffa064a0e0>] amdgpu_fbdev_restore_mode+0x20/0x60 [amdgpu]

Signed-off-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agogeneve: fix fill_info when using collect_metadata
Eric Garver [Tue, 23 May 2017 22:37:27 +0000 (18:37 -0400)]
geneve: fix fill_info when using collect_metadata

Since 9b4437a5b870 ("geneve: Unify LWT and netdev handling.") fill_info
does not return UDP_ZERO_CSUM6_RX when using COLLECT_METADATA. This is
because it uses ip_tunnel_info_af() with the device level info, which is
not valid for COLLECT_METADATA.

Fix by checking for the presence of the actual sockets.

Fixes: 9b4437a5b870 ("geneve: Unify LWT and netdev handling.")
Signed-off-by: Eric Garver <e@erig.me>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoxfs: Move handling of missing page into one place in xfs_find_get_desired_pgoff()
Jan Kara [Thu, 18 May 2017 23:36:24 +0000 (16:36 -0700)]
xfs: Move handling of missing page into one place in xfs_find_get_desired_pgoff()

Currently several places in xfs_find_get_desired_pgoff() handle the case
of a missing page. Make them all handled in one place after the loop has
terminated.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
7 years agoxfs: Fix off-by-in in loop termination in xfs_find_get_desired_pgoff()
Jan Kara [Thu, 18 May 2017 23:36:23 +0000 (16:36 -0700)]
xfs: Fix off-by-in in loop termination in xfs_find_get_desired_pgoff()

There is an off-by-one error in loop termination conditions in
xfs_find_get_desired_pgoff() since 'end' may index a page beyond end of
desired range if 'endoff' is page aligned. It doesn't have any visible
effects but still it is good to fix it.

Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
7 years agoxfs: Fix missed holes in SEEK_HOLE implementation
Jan Kara [Thu, 18 May 2017 23:36:22 +0000 (16:36 -0700)]
xfs: Fix missed holes in SEEK_HOLE implementation

XFS SEEK_HOLE implementation could miss a hole in an unwritten extent as
can be seen by the following command:

xfs_io -c "falloc 0 256k" -c "pwrite 0 56k" -c "pwrite 128k 8k"
       -c "seek -h 0" file
wrote 57344/57344 bytes at offset 0
56 KiB, 14 ops; 0.0000 sec (49.312 MiB/sec and 12623.9856 ops/sec)
wrote 8192/8192 bytes at offset 131072
8 KiB, 2 ops; 0.0000 sec (70.383 MiB/sec and 18018.0180 ops/sec)
Whence Result
HOLE 139264

Where we can see that hole at offset 56k was just ignored by SEEK_HOLE
implementation. The bug is in xfs_find_get_desired_pgoff() which does
not properly detect the case when pages are not contiguous.

Fix the problem by properly detecting when found page has larger offset
than expected.

CC: stable@vger.kernel.org
Fixes: d126d43f631f996daeee5006714fed914be32368
Signed-off-by: Jan Kara <jack@suse.cz>
Reviewed-by: Brian Foster <bfoster@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
7 years agoxfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff()
Eryu Guan [Tue, 23 May 2017 15:30:46 +0000 (08:30 -0700)]
xfs: fix off-by-one on max nr_pages in xfs_find_get_desired_pgoff()

xfs_find_get_desired_pgoff() is used to search for offset of hole or
data in page range [index, end] (both inclusive), and the max number
of pages to search should be at least one, if end == index.
Otherwise the only page is missed and no hole or data is found,
which is not correct.

When block size is smaller than page size, this can be demonstrated
by preallocating a file with size smaller than page size and writing
data to the last block. E.g. run this xfs_io command on a 1k block
size XFS on x86_64 host.

  # xfs_io -fc "falloc 0 3k" -c "pwrite 2k 1k" \
       -c "seek -d 0" /mnt/xfs/testfile
  wrote 1024/1024 bytes at offset 2048
  1 KiB, 1 ops; 0.0000 sec (33.675 MiB/sec and 34482.7586 ops/sec)
  Whence  Result
  DATA    EOF

Data at offset 2k was missed, and lseek(2) returned ENXIO.

This is uncovered by generic/285 subtest 07 and 08 on ppc64 host,
where pagesize is 64k. Because a recent change to generic/285
reduced the preallocated file size to smaller than 64k.

Cc: stable@vger.kernel.org # v3.7+
Signed-off-by: Eryu Guan <eguan@redhat.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
7 years agoxfs: fix unaligned access in xfs_btree_visit_blocks
Eric Sandeen [Tue, 23 May 2017 02:54:10 +0000 (19:54 -0700)]
xfs: fix unaligned access in xfs_btree_visit_blocks

This structure copy was throwing unaligned access warnings on sparc64:

Kernel unaligned access at TPC[1043c088] xfs_btree_visit_blocks+0x88/0xe0 [xfs]

xfs_btree_copy_ptrs does a memcpy, which avoids it.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
7 years agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Thu, 25 May 2017 03:29:53 +0000 (20:29 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is quite a big update because it includes a rework of the lpfc
  driver to separate the NVMe part from the FC part.

  The reason for doing this is because two separate trees (the nvme and
  scsi trees respectively) want to update the individual components and
  this separation will prevent a really nasty cross tree entanglement by
  the time we reach the next merge window.

  The rest of the fixes are the usual minor sort with no significant
  security implications"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (25 commits)
  scsi: zero per-cmd private driver data for each MQ I/O
  scsi: csiostor: fix use after free in csio_hw_use_fwconfig()
  scsi: ufs: Clean up some rpm/spm level SysFS nodes upon remove
  scsi: lpfc: fix build issue if NVME_FC_TARGET is not defined
  scsi: lpfc: Fix NULL pointer dereference during PCI error recovery
  scsi: lpfc: update version to 11.2.0.14
  scsi: lpfc: Add MDS Diagnostic support.
  scsi: lpfc: Fix NVMEI's handling of NVMET's PRLI response attributes
  scsi: lpfc: Cleanup entry_repost settings on SLI4 queues
  scsi: lpfc: Fix debugfs root inode "lpfc" not getting deleted on driver unload.
  scsi: lpfc: Fix NVME I+T not registering NVME as a supported FC4 type
  scsi: lpfc: Added recovery logic for running out of NVMET IO context resources
  scsi: lpfc: Separate NVMET RQ buffer posting from IO resources SGL/iocbq/context
  scsi: lpfc: Separate NVMET data buffer pool fir ELS/CT.
  scsi: lpfc: Fix NMI watchdog assertions when running nvmet IOPS tests
  scsi: lpfc: Fix NVMEI driver not decrementing counter causing bad rport state.
  scsi: lpfc: Fix nvmet RQ resource needs for large block writes.
  scsi: lpfc: Adding additional stats counters for nvme.
  scsi: lpfc: Fix system crash when port is reset.
  scsi: lpfc: Fix used-RPI accounting problem.
  ...

7 years agodrm/amd/powerplay: fix a signedness bugs
Dan Carpenter [Tue, 23 May 2017 05:13:45 +0000 (13:13 +0800)]
drm/amd/powerplay: fix a signedness bugs

Smatch complains about a signedness bug here:

        vega10_hwmgr.c:4202 vega10_force_clock_level()
        warn: always true condition '(i >= 0) => (0-u32max >= 0)'

Fixes: 7b52db39a4c2 ("drm/amd/powerplay: fix bug sclk/mclk
                     level can't be set on vega10.")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Eric Huang <JinHuiEric.Huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agodrm/amdgpu: fix NULL pointer panic of emit_gds_switch
Chunming Zhou [Thu, 11 May 2017 10:22:17 +0000 (18:22 +0800)]
drm/amdgpu: fix NULL pointer panic of emit_gds_switch

[  338.384770] BUG: unable to handle kernel NULL pointer dereference at           (null)
[  338.384817] IP: [<          (null)>]           (null)
[  338.385505] RIP: 0010:[<0000000000000000>]  [<          (null)>]           (null)
[  338.385950] Call Trace:
[  338.385993]  [<ffffffffa05d2313>] ? amdgpu_vm_flush+0x283/0x400 [amdgpu]
[  338.386025]  [<ffffffff811818d3>] ? printk+0x4d/0x4f
[  338.386074]  [<ffffffffa05d4906>] amdgpu_ib_schedule+0x4a6/0x4d0 [amdgpu]
[  338.386140]  [<ffffffffa0673e54>] amdgpu_job_run+0x64/0x180 [amdgpu]
[  338.386203]  [<ffffffffa0672e09>] amd_sched_main+0x2e9/0x4a0 [amdgpu]
[  338.386232]  [<ffffffff810bfce0>] ? prepare_to_wait_event+0x110/0x110
[  338.386295]  [<ffffffffa0672b20>] ? amd_sched_select_entity+0xe0/0xe0 [amdgpu]
[  338.386327]  [<ffffffff8109b423>] kthread+0xd3/0xf0
[  338.386349]  [<ffffffff8109b350>] ? kthread_park+0x60/0x60
[  338.386376]  [<ffffffff817e1ee5>] ret_from_fork+0x25/0x30
[  338.386401] Code:  Bad RIP value.
[  338.386420] RIP  [<          (null)>]           (null)
[  338.386443]  RSP <ffffc90001bd7d40>
[  338.386458] CR2: 0000000000000000
[  338.398508] ---[ end trace 4c66fcdc74b9a0a2 ]---

Signed-off-by: Chunming Zhou <David1.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agodrm/radeon: Unbreak HPD handling for r600+
Lyude [Thu, 11 May 2017 23:31:12 +0000 (19:31 -0400)]
drm/radeon: Unbreak HPD handling for r600+

We end up reading the interrupt register for HPD5, and then writing it
to HPD6 which on systems without anything using HPD5 results in
permanently disabling hotplug on one of the display outputs after the
first time we acknowledge a hotplug interrupt from the GPU.

This code is really bad. But for now, let's just fix this. I will
hopefully have a large patch series to refactor all of this soon.

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Lyude <lyude@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agodrm/amd/powerplay/smu7: disable mclk switching for high refresh rates
Alex Deucher [Thu, 11 May 2017 17:57:41 +0000 (13:57 -0400)]
drm/amd/powerplay/smu7: disable mclk switching for high refresh rates

Even if the vblank period would allow it, it still seems to
be problematic on some cards.

bug: https://bugs.freedesktop.org/show_bug.cgi?id=96868

Cc: stable@vger.kernel.org
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agodrm/amd/powerplay/smu7: add vblank check for mclk switching (v2)
Alex Deucher [Thu, 11 May 2017 17:46:12 +0000 (13:46 -0400)]
drm/amd/powerplay/smu7: add vblank check for mclk switching (v2)

Check to make sure the vblank period is long enough to support
mclk switching.

v2: drop needless initial assignment (Nils)

bug: https://bugs.freedesktop.org/show_bug.cgi?id=96868

Cc: stable@vger.kernel.org
Acked-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Rex Zhu <Rex.Zhu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agodrm/radeon/ci: disable mclk switching for high refresh rates (v2)
Alex Deucher [Thu, 11 May 2017 17:14:14 +0000 (13:14 -0400)]
drm/radeon/ci: disable mclk switching for high refresh rates (v2)

Even if the vblank period would allow it, it still seems to
be problematic on some cards.

v2: fix logic inversion (Nils)

bug: https://bugs.freedesktop.org/show_bug.cgi?id=96868

Cc: stable@vger.kernel.org
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agodrm/amdgpu/ci: disable mclk switching for high refresh rates (v2)
Alex Deucher [Thu, 11 May 2017 17:10:02 +0000 (13:10 -0400)]
drm/amdgpu/ci: disable mclk switching for high refresh rates (v2)

Even if the vblank period would allow it, it still seems to
be problematic on some cards.

v2: fix logic inversion (Nils)

bug: https://bugs.freedesktop.org/show_bug.cgi?id=96868

Cc: stable@vger.kernel.org
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
7 years agoMerge branch 'q-in-q-checksums'
David S. Miller [Wed, 24 May 2017 20:27:22 +0000 (16:27 -0400)]
Merge branch 'q-in-q-checksums'

Daniel Borkmann says:

====================
BPF pruning follow-up

Follow-up to fix incorrect pruning when alignment tracking is
in use and to properly clear regs after call to not leave stale
data behind. For details, please see individual patches.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agovirtio-net: enable TSO/checksum offloads for Q-in-Q vlans
Vlad Yasevich [Tue, 23 May 2017 17:38:43 +0000 (13:38 -0400)]
virtio-net: enable TSO/checksum offloads for Q-in-Q vlans

Since virtio does not provide it's own ndo_features_check handler,
TSO, and now checksum offload, are disabled for stacked vlans.
Re-enable the support and let the host take care of it.  This
restores/improves Guest-to-Guest performance over Q-in-Q vlans.

Acked-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agobe2net: Fix offload features for Q-in-Q packets
Vlad Yasevich [Tue, 23 May 2017 17:38:42 +0000 (13:38 -0400)]
be2net: Fix offload features for Q-in-Q packets

At least some of the be2net cards do not seem to be capabled
of performing checksum offload computions on Q-in-Q packets.
In these case, the recevied checksum on the remote is invalid
and TCP syn packets are dropped.

This patch adds a call to check disbled acceleration features
on Q-in-Q tagged traffic.

CC: Sathya Perla <sathya.perla@broadcom.com>
CC: Ajit Khaparde <ajit.khaparde@broadcom.com>
CC: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
CC: Somnath Kotur <somnath.kotur@broadcom.com>
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agovlan: Fix tcp checksum offloads in Q-in-Q vlans
Vlad Yasevich [Tue, 23 May 2017 17:38:41 +0000 (13:38 -0400)]
vlan: Fix tcp checksum offloads in Q-in-Q vlans

It appears that TCP checksum offloading has been broken for
Q-in-Q vlans.  The behavior was execerbated by the
series
    commit afb0bc972b52 ("Merge branch 'stacked_vlan_tso'")
that that enabled accleleration features on stacked vlans.

However, event without that series, it is possible to trigger
this issue.  It just requires a lot more specialized configuration.

The root cause is the interaction between how
netdev_intersect_features() works, the features actually set on
the vlan devices and HW having the ability to run checksum with
longer headers.

The issue starts when netdev_interesect_features() replaces
NETIF_F_HW_CSUM with a combination of NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM,
if the HW advertises IP|IPV6 specific checksums.  This happens
for tagged and multi-tagged packets.   However, HW that enables
IP|IPV6 checksum offloading doesn't gurantee that packets with
arbitrarily long headers can be checksummed.

This patch disables IP|IPV6 checksums on the packet for multi-tagged
packets.

CC: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
CC: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: Vladislav Yasevich <vyasevic@redhat.com>
Acked-by: Toshiaki Makita <makita.toshiaki@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agodrm/amdgpu: fix fundamental suspend/resume issue
Christian König [Wed, 10 May 2017 18:06:58 +0000 (20:06 +0200)]
drm/amdgpu: fix fundamental suspend/resume issue

Reinitializing the VM manager during suspend/resume is a very very bad
idea since all the VMs are still active and kicking.

This can lead to random VM faults after resume when new processes
become the same client ID assigned.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
7 years agonet: phy: marvell: Limit errata to 88m1101
Andrew Lunn [Tue, 23 May 2017 15:49:13 +0000 (17:49 +0200)]
net: phy: marvell: Limit errata to 88m1101

The 88m1101 has an errata when configuring autoneg. However, it was
being applied to many other Marvell PHYs as well. Limit its scope to
just the 88m1101.

Fixes: 76884679c644 ("phylib: Add support for Marvell 88e1111S and 88e1145")
Reported-by: Daniel Walker <danielwa@cisco.com>
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Harini Katakam <harinik@xilinx.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet/phy: fix mdio-octeon dependency and build
Randy Dunlap [Tue, 23 May 2017 15:19:49 +0000 (08:19 -0700)]
net/phy: fix mdio-octeon dependency and build

Fix build errors by making this driver depend on OF_MDIO, like
several other similar drivers do.

drivers/built-in.o: In function `octeon_mdiobus_remove':
mdio-octeon.c:(.text+0x196ee0): undefined reference to `mdiobus_unregister'
mdio-octeon.c:(.text+0x196ee8): undefined reference to `mdiobus_free'
drivers/built-in.o: In function `octeon_mdiobus_probe':
mdio-octeon.c:(.text+0x196f1d): undefined reference to `devm_mdiobus_alloc_size'
mdio-octeon.c:(.text+0x196ffe): undefined reference to `of_mdiobus_register'
mdio-octeon.c:(.text+0x197010): undefined reference to `mdiobus_free'

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'mlx5-fixes-2017-05-23' of git://git.kernel.org/pub/scm/linux/kernel/git...
David S. Miller [Wed, 24 May 2017 19:43:57 +0000 (15:43 -0400)]
Merge tag 'mlx5-fixes-2017-05-23' of git://git./linux/kernel/git/saeed/linux

Saeed Mahameed says:

====================
mlx5-fixes-2017-05-23

Some TC offloads fixes from Or Gerlitz.
From Erez, mlx5 IPoIB RX fix to improve GRO.
From Mohamad, Command interface fix to improve mitigation against FW
commands timeouts.
From Tariq, Driver load Tolerance against affinity settings failures.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge tag 'mac80211-for-davem-2017-05-23' of git://git.kernel.org/pub/scm/linux/kerne...
David S. Miller [Wed, 24 May 2017 19:31:39 +0000 (15:31 -0400)]
Merge tag 'mac80211-for-davem-2017-05-23' of git://git./linux/kernel/git/jberg/mac80211

Johannes Berg says:

====================
Just two fixes this time:
 * fix the scheduled scan "BUG: scheduling while atomic"
 * check mesh address extension flags more strictly
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: rtnetlink: bail out from rtnl_fdb_dump() on parse error
Alexander Potapenko [Tue, 23 May 2017 11:20:28 +0000 (13:20 +0200)]
net: rtnetlink: bail out from rtnl_fdb_dump() on parse error

rtnl_fdb_dump() failed to check the result of nlmsg_parse(), which led
to contents of |ifm| being uninitialized because nlh->nlmsglen was too
small to accommodate |ifm|. The uninitialized data may affect some
branches and result in unwanted effects, although kernel data doesn't
seem to leak to the userspace directly.

The bug has been detected with KMSAN and syzkaller.

For the record, here is the KMSAN report:

==================================================================
BUG: KMSAN: use of unitialized memory in rtnl_fdb_dump+0x5dc/0x1000
CPU: 0 PID: 1039 Comm: probe Not tainted 4.11.0-rc5+ #2727
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Bochs 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:16
 dump_stack+0x143/0x1b0 lib/dump_stack.c:52
 kmsan_report+0x12a/0x180 mm/kmsan/kmsan.c:1007
 __kmsan_warning_32+0x66/0xb0 mm/kmsan/kmsan_instr.c:491
 rtnl_fdb_dump+0x5dc/0x1000 net/core/rtnetlink.c:3230
 netlink_dump+0x84f/0x1190 net/netlink/af_netlink.c:2168
 __netlink_dump_start+0xc97/0xe50 net/netlink/af_netlink.c:2258
 netlink_dump_start ./include/linux/netlink.h:165
 rtnetlink_rcv_msg+0xae9/0xb40 net/core/rtnetlink.c:4094
 netlink_rcv_skb+0x339/0x5a0 net/netlink/af_netlink.c:2339
 rtnetlink_rcv+0x83/0xa0 net/core/rtnetlink.c:4110
 netlink_unicast_kernel net/netlink/af_netlink.c:1272
 netlink_unicast+0x13b7/0x1480 net/netlink/af_netlink.c:1298
 netlink_sendmsg+0x10b8/0x10f0 net/netlink/af_netlink.c:1844
 sock_sendmsg_nosec net/socket.c:633
 sock_sendmsg net/socket.c:643
 ___sys_sendmsg+0xd4b/0x10f0 net/socket.c:1997
 __sys_sendmsg net/socket.c:2031
 SYSC_sendmsg+0x2c6/0x3f0 net/socket.c:2042
 SyS_sendmsg+0x87/0xb0 net/socket.c:2038
 do_syscall_64+0x102/0x150 arch/x86/entry/common.c:285
 entry_SYSCALL64_slow_path+0x25/0x25 arch/x86/entry/entry_64.S:246
RIP: 0033:0x401300
RSP: 002b:00007ffc3b0e6d58 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00000000004002b0 RCX: 0000000000401300
RDX: 0000000000000000 RSI: 00007ffc3b0e6d80 RDI: 0000000000000003
RBP: 00007ffc3b0e6e00 R08: 000000000000000b R09: 0000000000000004
R10: 000000000000000d R11: 0000000000000246 R12: 0000000000000000
R13: 00000000004065a0 R14: 0000000000406630 R15: 0000000000000000
origin: 000000008fe00056
 save_stack_trace+0x59/0x60 arch/x86/kernel/stacktrace.c:59
 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:352
 kmsan_internal_poison_shadow+0xb1/0x1a0 mm/kmsan/kmsan.c:247
 kmsan_poison_shadow+0x6d/0xc0 mm/kmsan/kmsan.c:260
 slab_alloc_node mm/slub.c:2743
 __kmalloc_node_track_caller+0x1f4/0x390 mm/slub.c:4349
 __kmalloc_reserve net/core/skbuff.c:138
 __alloc_skb+0x2cd/0x740 net/core/skbuff.c:231
 alloc_skb ./include/linux/skbuff.h:933
 netlink_alloc_large_skb net/netlink/af_netlink.c:1144
 netlink_sendmsg+0x934/0x10f0 net/netlink/af_netlink.c:1819
 sock_sendmsg_nosec net/socket.c:633
 sock_sendmsg net/socket.c:643
 ___sys_sendmsg+0xd4b/0x10f0 net/socket.c:1997
 __sys_sendmsg net/socket.c:2031
 SYSC_sendmsg+0x2c6/0x3f0 net/socket.c:2042
 SyS_sendmsg+0x87/0xb0 net/socket.c:2038
 do_syscall_64+0x102/0x150 arch/x86/entry/common.c:285
 return_from_SYSCALL_64+0x0/0x6a arch/x86/entry/entry_64.S:246
==================================================================

and the reproducer:

==================================================================
  #include <sys/socket.h>
  #include <net/if_arp.h>
  #include <linux/netlink.h>
  #include <stdint.h>

  int main()
  {
    int sock = socket(PF_NETLINK, SOCK_DGRAM | SOCK_NONBLOCK, 0);
    struct msghdr msg;
    memset(&msg, 0, sizeof(msg));
    char nlmsg_buf[32];
    memset(nlmsg_buf, 0, sizeof(nlmsg_buf));
    struct nlmsghdr *nlmsg = nlmsg_buf;
    nlmsg->nlmsg_len = 0x11;
    nlmsg->nlmsg_type = 0x1e; // RTM_NEWROUTE = RTM_BASE + 0x0e
    // type = 0x0e = 1110b
    // kind = 2
    nlmsg->nlmsg_flags = 0x101; // NLM_F_ROOT | NLM_F_REQUEST
    nlmsg->nlmsg_seq = 0;
    nlmsg->nlmsg_pid = 0;
    nlmsg_buf[16] = (char)7;
    struct iovec iov;
    iov.iov_base = nlmsg_buf;
    iov.iov_len = 17;
    msg.msg_iov = &iov;
    msg.msg_iovlen = 1;
    sendmsg(sock, &msg, 0);
    return 0;
  }
==================================================================

Signed-off-by: Alexander Potapenko <glider@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agonet: fec: add post PHY reset delay DT property
Quentin Schulz [Tue, 23 May 2017 09:48:08 +0000 (11:48 +0200)]
net: fec: add post PHY reset delay DT property

Some PHY require to wait for a bit after the reset GPIO has been
toggled. This adds support for the DT property `phy-reset-post-delay`
which gives the delay in milliseconds to wait after reset.

If the DT property is not given, no delay is observed. Post reset delay
greater than 1000ms are invalid.

Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Fugang Duan <fugang.duan@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoMerge branch 'sctp-dupcookie-fixes'
David S. Miller [Wed, 24 May 2017 19:21:05 +0000 (15:21 -0400)]
Merge branch 'sctp-dupcookie-fixes'

Xin Long says:

====================
sctp: a bunch of fixes for processing dupcookie

After introducing transport hashtable and per stream info into sctp,
some regressions were caused when processing dupcookie, this patchset
is to fix them.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosctp: set new_asoc temp when processing dupcookie
Xin Long [Tue, 23 May 2017 05:28:55 +0000 (13:28 +0800)]
sctp: set new_asoc temp when processing dupcookie

After sctp changed to use transport hashtable, a transport would be
added into global hashtable when adding the peer to an asoc, then
the asoc can be got by searching the transport in the hashtbale.

The problem is when processing dupcookie in sctp_sf_do_5_2_4_dupcook,
a new asoc would be created. A peer with the same addr and port as
the one in the old asoc might be added into the new asoc, but fail
to be added into the hashtable, as they also belong to the same sk.

It causes that sctp's dupcookie processing can not really work.

Since the new asoc will be freed after copying it's information to
the old asoc, it's more like a temp asoc. So this patch is to fix
it by setting it as a temp asoc to avoid adding it's any transport
into the hashtable and also avoid allocing assoc_id.

An extra thing it has to do is to also alloc stream info for any
temp asoc, as sctp dupcookie process needs it to update old asoc.
But I don't think it would hurt something, as a temp asoc would
always be freed after finishing processing cookie echo packet.

Reported-by: Jianwen Ji <jiji@redhat.com>
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agosctp: fix stream update when processing dupcookie
Xin Long [Tue, 23 May 2017 05:28:54 +0000 (13:28 +0800)]
sctp: fix stream update when processing dupcookie

Since commit 3dbcc105d556 ("sctp: alloc stream info when initializing
asoc"), stream and stream.out info are always alloced when creating
an asoc.

So it's not correct to check !asoc->stream before updating stream
info when processing dupcookie, but would be better to check asoc
state instead.

Fixes: 3dbcc105d556 ("sctp: alloc stream info when initializing asoc")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Neil Horman <nhorman@tuxdriver.com>
Acked-by: Vlad Yasevich <vyasevich@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
7 years agoceph: check that the new inode size is within limits in ceph_fallocate()
Luis Henriques [Fri, 5 May 2017 17:28:44 +0000 (18:28 +0100)]
ceph: check that the new inode size is within limits in ceph_fallocate()

Currently the ceph client doesn't respect the rlimit in fallocate.  This
means that a user can allocate a file with size > RLIMIT_FSIZE.  This
patch adds the call to inode_newsize_ok() to verify filesystem limits and
ulimits.  This should make ceph successfully run xfstest generic/228.

Signed-off-by: Luis Henriques <lhenriques@suse.com>
Reviewed-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
7 years agolibceph: cleanup old messages according to reconnect seq
Yan, Zheng [Fri, 5 May 2017 10:47:37 +0000 (18:47 +0800)]
libceph: cleanup old messages according to reconnect seq

when reopen a connection, use 'reconnect seq' to clean up
messages that have already been received by peer.

Link: http://tracker.ceph.com/issues/18690
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
7 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm...
Linus Torvalds [Wed, 24 May 2017 15:28:59 +0000 (08:28 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ebiederm/user-namespace

Pull ptrace fix from Eric Biederman:
 "This fixes a brown paper bag bug. When I fixed the ptrace interaction
  with user namespaces I added a new field ptracer_cred in struct_task
  and I failed to properly initialize it on fork.

  This dangling pointer wound up breaking runing setuid applications run
  from the enlightenment window manager.

  As this is the worst sort of bug. A regression breaking user space for
  no good reason let's get this fixed"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace:
  ptrace: Properly initialize ptracer_cred on fork

7 years agoMerge tag 'mmc-v4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Linus Torvalds [Wed, 24 May 2017 15:21:56 +0000 (08:21 -0700)]
Merge tag 'mmc-v4.12-rc1' of git://git./linux/kernel/git/ulfh/mmc

Pull MMC fixes from Ulf Hansson:
 "A couple of MMC host fixes intended for v4.12 rc3:

   - sdhci-xenon: Don't free data for phy allocated by devm*
   - sdhci-iproc: Suppress spurious interrupts
   - cavium: Fix probing race with regulator
   - cavium: Prevent crash with incomplete DT
   - cavium-octeon: Use proper GPIO name for power control
   - cavium-octeon: Fix interrupt enable code"

* tag 'mmc-v4.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
  mmc: sdhci-iproc: suppress spurious interrupt with Multiblock read
  mmc: cavium: Fix probing race with regulator
  of/platform: Make of_platform_device_destroy globally visible
  mmc: cavium: Prevent crash with incomplete DT
  mmc: cavium-octeon: Use proper GPIO name for power control
  mmc: cavium-octeon: Fix interrupt enable code
  mmc: sdhci-xenon: kill xenon_clean_phy()

7 years agonetfilter: ctnetlink: fix incorrect nf_ct_put during hash resize
Liping Zhang [Sat, 20 May 2017 23:22:49 +0000 (07:22 +0800)]
netfilter: ctnetlink: fix incorrect nf_ct_put during hash resize

If nf_conntrack_htable_size was adjusted by the user during the ct
dump operation, we may invoke nf_ct_put twice for the same ct, i.e.
the "last" ct. This will cause the ct will be freed but still linked
in hash buckets.

It's very easy to reproduce the problem by the following commands:
  # while : ; do
  echo $RANDOM > /proc/sys/net/netfilter/nf_conntrack_buckets
  done
  # while : ; do
  conntrack -L
  done
  # iperf -s 127.0.0.1 &
  # iperf -c 127.0.0.1 -P 60 -t 36000

After a while, the system will hang like this:
  NMI watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [bash:20184]
  NMI watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [iperf:20382]
  ...

So at last if we find cb->args[1] is equal to "last", this means hash
resize happened, then we can set cb->args[1] to 0 to fix the above
issue.

Fixes: d205dc40798d ("[NETFILTER]: ctnetlink: fix deadlock in table dumping")
Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
7 years agonetfilter: nat: use atomic bit op to clear the _SRC_NAT_DONE_BIT
Liping Zhang [Sun, 21 May 2017 14:38:11 +0000 (22:38 +0800)]
netfilter: nat: use atomic bit op to clear the _SRC_NAT_DONE_BIT

We need to clear the IPS_SRC_NAT_DONE_BIT to indicate that the ct has
been removed from nat_bysource table. But unfortunately, we use the
non-atomic bit operation: "ct->status &= ~IPS_NAT_DONE_MASK". So
there's a race condition that we may clear the _DYING_BIT set by
another CPU unexpectedly.

Since we don't care about the IPS_DST_NAT_DONE_BIT, so just using
clear_bit to clear the IPS_SRC_NAT_DONE_BIT is enough.

Also note, this is the last user which use the non-atomic bit operation
to update the confirmed ct->status.

Reported-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Liping Zhang <zlpnobody@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
7 years agonetfilter: nft_set_rbtree: handle element re-addition after deletion
Pablo Neira Ayuso [Sat, 20 May 2017 22:37:10 +0000 (00:37 +0200)]
netfilter: nft_set_rbtree: handle element re-addition after deletion

The existing code selects no next branch to be inspected when
re-inserting an inactive element into the rb-tree, looping endlessly.
This patch restricts the check for active elements to the EEXIST case
only.

Fixes: e701001e7cbe ("netfilter: nft_rbtree: allow adjacent intervals with dynamic updates")
Reported-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Tested-by: Wolfgang Bumiller <w.bumiller@proxmox.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
7 years agonetfilter: conntrack: fix false CRC32c mismatch using paged skb
Davide Caratti [Thu, 18 May 2017 16:01:43 +0000 (18:01 +0200)]
netfilter: conntrack: fix false CRC32c mismatch using paged skb

sctp_compute_cksum() implementation assumes that at least the SCTP header
is in the linear part of skb: modify conntrack error callback to avoid
false CRC32c mismatch, if the transport header is partially/entirely paged.

Fixes: cf6e007eef83 ("netfilter: conntrack: validate SCTP crc32c in PREROUTING")
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
7 years agodrm/gma500/psb: Actually use VBT mode when it is found
Patrik Jakobsson [Tue, 18 Apr 2017 11:43:32 +0000 (13:43 +0200)]
drm/gma500/psb: Actually use VBT mode when it is found

With LVDS we were incorrectly picking the pre-programmed mode instead of
the prefered mode provided by VBT. Make sure we pick the VBT mode if
one is provided. It is likely that the mode read-out code is still wrong
but this patch fixes the immediate problem on most machines.

Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=78562
Cc: <stable@vger.kernel.org>
Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20170418114332.12183-1-patrik.r.jakobsson@gmail.com
7 years agoPCI/PM: Add needs_resume flag to avoid suspend complete optimization
Imre Deak [Tue, 23 May 2017 19:18:17 +0000 (14:18 -0500)]
PCI/PM: Add needs_resume flag to avoid suspend complete optimization

Some drivers - like i915 - may not support the system suspend direct
complete optimization due to differences in their runtime and system
suspend sequence.  Add a flag that when set resumes the device before
calling the driver's system suspend handlers which effectively disables
the optimization.

Needed by a future patch fixing suspend/resume on i915.

Suggested by Rafael.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: stable@vger.kernel.org
7 years agolibceph: NULL deref on crush_decode() error path
Dan Carpenter [Tue, 23 May 2017 14:25:10 +0000 (17:25 +0300)]
libceph: NULL deref on crush_decode() error path

If there is not enough space then ceph_decode_32_safe() does a goto bad.
We need to return an error code in that situation.  The current code
returns ERR_PTR(0) which is NULL.  The callers are not expecting that
and it results in a NULL dereference.

Fixes: f24e9980eb86 ("ceph: OSD client")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Ilya Dryomov <idryomov@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
7 years agolibceph: fix error handling in process_one_ticket()
Ilya Dryomov [Fri, 19 May 2017 12:24:36 +0000 (14:24 +0200)]
libceph: fix error handling in process_one_ticket()

Don't leak key internals after new_session_key is populated.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
7 years agolibceph: validate blob_struct_v in process_one_ticket()
Ilya Dryomov [Fri, 19 May 2017 10:21:56 +0000 (12:21 +0200)]
libceph: validate blob_struct_v in process_one_ticket()

None of these are validated in userspace, but since we do validate
reply_struct_v in ceph_x_proc_ticket_reply(), tkt_struct_v (first) and
CephXServiceTicket struct_v (second) in process_one_ticket(), validate
CephXTicketBlob struct_v as well.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
7 years agolibceph: drop version variable from ceph_monmap_decode()
Ilya Dryomov [Fri, 19 May 2017 09:59:22 +0000 (11:59 +0200)]
libceph: drop version variable from ceph_monmap_decode()

It's set but not used: CEPH_FEATURE_MONNAMES feature bit isn't
advertised, which guarantees a v1 MonMap.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>
7 years agolibceph: make ceph_msg_data_advance() return void
Ilya Dryomov [Fri, 19 May 2017 09:38:17 +0000 (11:38 +0200)]
libceph: make ceph_msg_data_advance() return void

Both callers ignore the returned bool.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Alex Elder <elder@linaro.org>