Linus Torvalds [Sat, 18 Jun 2016 15:57:59 +0000 (05:57 -1000)]
Merge branch 'for-linus-4.7' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"The most user visible change here is a fix for our recent superblock
validation checks that were causing problems on non-4k pagesized
systems"
* 'for-linus-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: btrfs_check_super_valid: Allow 4096 as stripesize
btrfs: remove build fixup for qgroup_account_snapshot
btrfs: use new error message helper in qgroup_account_snapshot
btrfs: avoid blocking open_ctree from cleaner_kthread
Btrfs: don't BUG_ON() in btrfs_orphan_add
btrfs: account for non-CoW'd blocks in btrfs_abort_transaction
Btrfs: check if extent buffer is aligned to sectorsize
btrfs: Use correct format specifier
Linus Torvalds [Sat, 18 Jun 2016 06:22:37 +0000 (20:22 -1000)]
Merge tag 'acpi-4.7-rc4' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI fix from Rafael Wysocki:
"Revert a recent ACPICA commit that introduced a suspend-to-RAM
regression on one system due to incorrect information in its ACPI
tables that had not been taken into consideration at all before (and
everything worked), but the commit in question started to use it"
* tag 'acpi-4.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
Revert "ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for acpi_hw_write()"
Linus Torvalds [Sat, 18 Jun 2016 06:08:00 +0000 (20:08 -1000)]
Merge tag 'pm-4.7-rc4' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"Fixes for two recent regressions that may lead to degraded performance
(operating performance points framework, intel_pstate).
Specifics:
- Fix a recent regression in the intel_pstate driver that may lead to
degraded performance on some systems due to missing turbo state
entry in the table returned by the ACPI _PSS object (Srinivas
Pandruvada).
- Fix a recent regression in the OPP (operating performance points)
framework that may lead to degraded performance on some systems
where the OPP table is created too early (Viresh Kumar)"
* tag 'pm-4.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / OPP: Add 'UNKNOWN' status for shared_opp in struct opp_table
cpufreq: intel_pstate: Adjust _PSS[0] freqeuency if needed
Linus Torvalds [Sat, 18 Jun 2016 05:27:12 +0000 (19:27 -1000)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jikos/hid
Pull HID subsystem fixes from Jiri Kosina:
- kernel panic fix in hid-elo from Oliver Neukum
- Surface Pro 3 device quirk from Benjamin Tissoires
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: multitouch: Add MT_QUIRK_NOT_SEEN_MEANS_UP to Surface Pro 3
HID: elo: kill not flush the work
Rafael J. Wysocki [Fri, 17 Jun 2016 23:55:55 +0000 (01:55 +0200)]
Merge branch 'acpica-fixes'
* acpica-fixes:
Revert "ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for acpi_hw_write()"
Rafael J. Wysocki [Fri, 17 Jun 2016 23:55:13 +0000 (01:55 +0200)]
Merge branches 'pm-opp' and 'pm-cpufreq-fixes'
* pm-opp:
PM / OPP: Add 'UNKNOWN' status for shared_opp in struct opp_table
* pm-cpufreq-fixes:
cpufreq: intel_pstate: Adjust _PSS[0] freqeuency if needed
Linus Torvalds [Fri, 17 Jun 2016 17:19:13 +0000 (07:19 -1000)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"The main things are getting kgdb up and running with upstream GDB
after a protocol change was reverted and fixing our spin_unlock_wait
and spin_is_locked implementations after doing some similar work with
PeterZ on the qspinlock code last week. Whilst we haven't seen any
failures in practice, it's still worth getting this fixed.
Summary:
- Plug the ongoing spin_unlock_wait/spin_is_locked mess
- KGDB protocol fix to sync w/ GDB
- Fix MIDR-based PMU probing for old 32-bit SMP systems
(OMAP4/Realview)
- Minor tweaks to the fault handling path"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: kgdb: Match pstate size with gdbserver protocol
arm64: spinlock: Ensure forward-progress in spin_unlock_wait
arm64: spinlock: fix spin_unlock_wait for LSE atomics
arm64: spinlock: order spin_{is_locked,unlock_wait} against local locks
arm: pmu: Fix non-devicetree probing
arm64: mm: mark fault_info table const
arm64: fix dump_instr when PAN and UAO are in use
Linus Torvalds [Fri, 17 Jun 2016 17:15:43 +0000 (07:15 -1000)]
Merge tag 'iommu-fixes-v4.7-rc3' of git://git./linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"Three patches queued up:
- Fix for ARM-SMMU to add a missing iommu-ops callback which is
required by common iommu code
- Fix for the rockchip iommu where the wrong MMUs got the commands
- A regression fix for the Intel VT-d driver. The regression only
showed up on X58 chipsets with more than one iommu. These chipsets
seem to require that QI is enabled on all IOMMUs before it can be
used"
* tag 'iommu-fixes-v4.7-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/vt-d: Enable QI on all IOMMUs before setting root entry
iommu/rockchip: Fix zap cache during device attach
iommu/arm-smmu: Wire up map_sg for arm-smmu-v3
Linus Torvalds [Fri, 17 Jun 2016 17:06:57 +0000 (07:06 -1000)]
Merge tag 'for-4.7-rc4' of git://git./linux/kernel/git/j.anaszewski/linux-leds
Pull LED fixes from Jacek Anaszewski:
- Fix brightness setting upon hardware blinking enabled
- Handle suspend/resume in heartbeat trigger
* tag 'for-4.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/j.anaszewski/linux-leds:
leds: handle suspend/resume in heartbeat trigger
leds: core: Fix brightness setting upon hardware blinking enabled
Chris Mason [Fri, 17 Jun 2016 17:04:57 +0000 (10:04 -0700)]
Merge branch 'for-chris' of git://git./linux/kernel/git/kdave/linux into for-linus-4.7
Chandan Rajendra [Thu, 16 Jun 2016 16:37:58 +0000 (22:07 +0530)]
Btrfs: btrfs_check_super_valid: Allow 4096 as stripesize
Older btrfs-progs/mkfs.btrfs sets 4096 as the stripesize. Hence
restricting stripesize to be equal to sectorsize would cause super block
validation to return an error on architectures where PAGE_SIZE is not
equal to 4096.
Hence as a workaround, this commit allows stripesize to be set to 4096
bytes.
Signed-off-by: Chandan Rajendra <chandan@linux.vnet.ibm.com>
Signed-off-by: David Sterba <dsterba@suse.com>
David Sterba [Thu, 16 Jun 2016 15:34:28 +0000 (17:34 +0200)]
btrfs: remove build fixup for qgroup_account_snapshot
Introduced in
2c1984f244838477aab ("btrfs: build fixup for
qgroup_account_snapshot") as temporary bisectability build fixup.
Signed-off-by: David Sterba <dsterba@suse.com>
David Sterba [Fri, 17 Jun 2016 16:15:25 +0000 (18:15 +0200)]
btrfs: use new error message helper in qgroup_account_snapshot
We've renamed btrfs_std_error, this one is left from last merge.
Signed-off-by: David Sterba <dsterba@suse.com>
Zygo Blaxell [Mon, 13 Jun 2016 03:39:58 +0000 (23:39 -0400)]
btrfs: avoid blocking open_ctree from cleaner_kthread
This fixes a problem introduced in commit
2f3165ecf103599f82bf0ea254039db335fb5005
"btrfs: don't force mounts to wait for cleaner_kthread to delete one or more subvolumes".
open_ctree eventually calls btrfs_replay_log which in turn calls
btrfs_commit_super which tries to lock the cleaner_mutex, causing a
recursive mutex deadlock during mount.
Instead of playing whack-a-mole trying to keep up with all the
functions that may want to lock cleaner_mutex, put all the cleaner_mutex
lockers back where they were, and attack the problem more directly:
keep cleaner_kthread asleep until the filesystem is mounted.
When filesystems are mounted read-only and later remounted read-write,
open_ctree did not set fs_info->open and neither does anything else.
Set this flag in btrfs_remount so that neither btrfs_delete_unused_bgs
nor cleaner_kthread get confused by the common case of "/" filesystem
read-only mount followed by read-write remount.
Signed-off-by: Zygo Blaxell <ce3g8jdj@umail.furryterror.org>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Josef Bacik [Fri, 27 May 2016 17:03:04 +0000 (13:03 -0400)]
Btrfs: don't BUG_ON() in btrfs_orphan_add
This is just a screwup for developers, so change it to an ASSERT() so developers
notice when things go wrong and deal with the error appropriately if ASSERT()
isn't enabled. Thanks,
Signed-off-by: Josef Bacik <jbacik@fb.com>
Reviewed-by: Mark Fasheh <mfasheh@suse.de>
Signed-off-by: David Sterba <dsterba@suse.com>
Jeff Mahoney [Wed, 8 Jun 2016 04:36:38 +0000 (00:36 -0400)]
btrfs: account for non-CoW'd blocks in btrfs_abort_transaction
The test for !trans->blocks_used in btrfs_abort_transaction is
insufficient to determine whether it's safe to drop the transaction
handle on the floor. btrfs_cow_block, informed by should_cow_block,
can return blocks that have already been CoW'd in the current
transaction. trans->blocks_used is only incremented for new block
allocations. If an operation overlaps the blocks in the current
transaction entirely and must abort the transaction, we'll happily
let it clean up the trans handle even though it may have modified
the blocks and will commit an incomplete operation.
In the long-term, I'd like to do closer tracking of when the fs
is actually modified so we can still recover as gracefully as possible,
but that approach will need some discussion. In the short term,
since this is the only code using trans->blocks_used, let's just
switch it to a bool indicating whether any blocks were used and set
it when should_cow_block returns false.
Cc: stable@vger.kernel.org # 3.4+
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Reviewed-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Liu Bo [Mon, 6 Jun 2016 19:01:23 +0000 (12:01 -0700)]
Btrfs: check if extent buffer is aligned to sectorsize
Thanks to fuzz testing, we can pass an invalid bytenr to extent buffer
via alloc_extent_buffer(). An unaligned eb can have more pages than it
should have, which ends up extent buffer's leak or some corrupted content
in extent buffer.
This adds a warning to let us quickly know what was happening.
Now that alloc_extent_buffer() no more returns NULL, this changes its
caller and callers of its caller to match with the new error
handling.
Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Heinrich Schuchardt [Sat, 11 Jun 2016 16:11:10 +0000 (18:11 +0200)]
btrfs: Use correct format specifier
Component mirror_num of struct btrfsic_block is defined
as unsigned int. Use %u as format specifier.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Joerg Roedel [Fri, 17 Jun 2016 09:29:48 +0000 (11:29 +0200)]
iommu/vt-d: Enable QI on all IOMMUs before setting root entry
This seems to be required on some X58 chipsets on systems
with more than one IOMMU. QI does not work until it is
enabled on all IOMMUs in the system.
Reported-by: Dheeraj CVR <cvr.dheeraj@gmail.com>
Tested-by: Dheeraj CVR <cvr.dheeraj@gmail.com>
Fixes: 5f0a7f7614a9 ('iommu/vt-d: Make root entry visible for hardware right after allocation')
Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Linus Torvalds [Fri, 17 Jun 2016 03:33:51 +0000 (17:33 -1000)]
Merge tag 'pwm/for-4.7-rc4' of git://git./linux/kernel/git/thierry.reding/linux-pwm
Pull pwm fixes from Thierry Reding:
"These changes fix a bit of fallout from the introduction of the atomic
API"
* tag 'pwm/for-4.7-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
pwm: atmel-hlcdc: Fix default PWM polarity
pwm: sysfs: Get return value from pwm_apply_state()
pwm: Improve args checking in pwm_apply_state()
Linus Torvalds [Fri, 17 Jun 2016 03:29:53 +0000 (17:29 -1000)]
Merge tag 'for-linus' of git://git./virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
- miscellaneous fixes for MIPS and s390
- one new kvm_stat for s390
- correctly disable VT-d posted interrupts with the rest of posted
interrupts
- "make randconfig" fix for x86 AMD
- off-by-one in irq route check (the "good" kind that errors out a bit
too early!)
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
kvm: vmx: check apicv is active before using VT-d posted interrupt
kvm: Fix irq route entries exceeding KVM_MAX_IRQ_ROUTES
kvm: svm: Do not support AVIC if not CONFIG_X86_LOCAL_APIC
kvm: svm: Fix implicit declaration for __default_cpu_present_to_apicid()
MIPS: KVM: Fix CACHE triggered exception emulation
MIPS: KVM: Don't unwind PC when emulating CACHE
MIPS: KVM: Include bit 31 in segment matches
MIPS: KVM: Fix modular KVM under QEMU
KVM: s390: Add stats for PEI events
KVM: s390: ignore IBC if zero
Linus Torvalds [Fri, 17 Jun 2016 03:25:52 +0000 (17:25 -1000)]
Merge tag 'nfsd-4.7-1' of git://linux-nfs.org/~bfields/linux
Pull nfsd bugfixes from Bruce Fields:
"Oleg Drokin found and fixed races in the nfsd4 state code that go back
to the big nfs4_lock_state removal around 3.17 (but that were also
probably hard to reproduce before client changes in 3.20 allowed the
client to perform parallel opens).
Also fix a 4.1 backchannel crash due to rpc multipath changes in 4.6.
Trond acked the client-side rpc fixes going through my tree"
* tag 'nfsd-4.7-1' of git://linux-nfs.org/~bfields/linux:
nfsd: Make init_open_stateid() a bit more whole
nfsd: Extend the mutex holding region around in nfsd4_process_open2()
nfsd: Always lock state exclusively.
rpc: share one xps between all backchannels
nfsd4/rpc: move backchannel create logic into rpc code
SUNRPC: fix xprt leak on xps allocation failure
nfsd: Fix NFSD_MDS_PR_KEY on 32-bit by adding ULL postfix
Linus Torvalds [Fri, 17 Jun 2016 03:16:56 +0000 (17:16 -1000)]
Merge branch 'overlayfs-linus' of git://git./linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"This contains two regression fixes: one for the xattr API update and
one for using the mounter's creds in file creation in overlayfs.
There's also a fix for a bug in handling hard linked AF_UNIX sockets
that's been there from day one. This fix is overlayfs only despite
the fact that it touches code outside the overlay filesystem: d_real()
is an identity function for all except overlay dentries"
* 'overlayfs-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: fix uid/gid when creating over whiteout
ovl: xattr filter fix
af_unix: fix hard linked sockets on overlay
vfs: add d_real_inode() helper
Dan Carpenter [Thu, 16 Jun 2016 14:48:57 +0000 (15:48 +0100)]
KEYS: potential uninitialized variable
If __key_link_begin() failed then "edit" would be uninitialized. I've
added a check to fix that.
This allows a random user to crash the kernel, though it's quite
difficult to achieve. There are three ways it can be done as the user
would have to cause an error to occur in __key_link():
(1) Cause the kernel to run out of memory. In practice, this is difficult
to achieve without ENOMEM cropping up elsewhere and aborting the
attempt.
(2) Revoke the destination keyring between the keyring ID being looked up
and it being tested for revocation. In practice, this is difficult to
time correctly because the KEYCTL_REJECT function can only be used
from the request-key upcall process. Further, users can only make use
of what's in /sbin/request-key.conf, though this does including a
rejection debugging test - which means that the destination keyring
has to be the caller's session keyring in practice.
(3) Have just enough key quota available to create a key, a new session
keyring for the upcall and a link in the session keyring, but not then
sufficient quota to create a link in the nominated destination keyring
so that it fails with EDQUOT.
The bug can be triggered using option (3) above using something like the
following:
echo 80 >/proc/sys/kernel/keys/root_maxbytes
keyctl request2 user debug:fred negate @t
The above sets the quota to something much lower (80) to make the bug
easier to trigger, but this is dependent on the system. Note also that
the name of the keyring created contains a random number that may be
between 1 and 10 characters in size, so may throw the test off by
changing the amount of quota used.
Assuming the failure occurs, something like the following will be seen:
kfree_debugcheck: out of range ptr 6b6b6b6b6b6b6b68h
------------[ cut here ]------------
kernel BUG at ../mm/slab.c:2821!
...
RIP: 0010:[<
ffffffff811600f9>] kfree_debugcheck+0x20/0x25
RSP: 0018:
ffff8804014a7de8 EFLAGS:
00010092
RAX:
0000000000000034 RBX:
6b6b6b6b6b6b6b68 RCX:
0000000000000000
RDX:
0000000000040001 RSI:
00000000000000f6 RDI:
0000000000000300
RBP:
ffff8804014a7df0 R08:
0000000000000001 R09:
0000000000000000
R10:
ffff8804014a7e68 R11:
0000000000000054 R12:
0000000000000202
R13:
ffffffff81318a66 R14:
0000000000000000 R15:
0000000000000001
...
Call Trace:
kfree+0xde/0x1bc
assoc_array_cancel_edit+0x1f/0x36
__key_link_end+0x55/0x63
key_reject_and_link+0x124/0x155
keyctl_reject_key+0xb6/0xe0
keyctl_negate_key+0x10/0x12
SyS_keyctl+0x9f/0xe7
do_syscall_64+0x63/0x13a
entry_SYSCALL64_slow_path+0x25/0x25
Fixes: f70e2e06196a ('KEYS: Do preallocation for __key_link()')
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: stable@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Daniel Thompson [Thu, 16 Jun 2016 15:51:52 +0000 (16:51 +0100)]
arm64: kgdb: Match pstate size with gdbserver protocol
Current versions of gdb do not interoperate cleanly with kgdb on arm64
systems because gdb and kgdb do not use the same register description.
This patch modifies kgdb to work with recent releases of gdb (>= 7.8.1).
Compatibility with gdb (after the patch is applied) is as follows:
gdb-7.6 and earlier Ok
gdb-7.7 series Works if user provides custom target description
gdb-7.8(.0) Works if user provides custom target description
gdb-7.8.1 and later Ok
When commit
44679a4f142b ("arm64: KGDB: Add step debugging support") was
introduced it was paired with a gdb patch that made an incompatible
change to the gdbserver protocol. This patch was eventually merged into
the gdb sources:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=
a4d9ba85ec5597a6a556afe26b712e878374b9dd
The change to the protocol was mostly made to simplify big-endian support
inside the kernel gdb stub. Unfortunately the gdb project released
gdb-7.7.x and gdb-7.8.0 before the protocol incompatibility was identified
and reversed:
https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;a=commit;h=
bdc144174bcb11e808b4e73089b850cf9620a7ee
This leaves us in a position where kgdb still uses the no-longer-used
protocol; gdb-7.8.1, which restored the original behaviour, was
released on 2014-10-29.
I don't believe it is possible to detect/correct the protocol
incompatiblity which means the kernel must take a view about which
version of the gdb remote protocol is "correct". This patch takes the
view that the original/current version of the protocol is correct
and that version found in gdb-7.7.x and gdb-7.8.0 is anomalous.
Signed-off-by: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Viresh Kumar [Thu, 16 Jun 2016 13:33:11 +0000 (19:03 +0530)]
PM / OPP: Add 'UNKNOWN' status for shared_opp in struct opp_table
dev_pm_opp_get_sharing_cpus() returns 0 even in the case when the OPP
core doesn't know whether or not the table is shared. It works on the
majority of platforms, where the OPP table is never created before
invoking the function and then -ENODEV is returned by it.
But in the case of one platform (Jetson TK1) at least, the situation
is a bit different. The OPP table has been created (somehow) before
dev_pm_opp_get_sharing_cpus() is called and it returns 0. Its caller
treats that as 'the CPUs don't share OPPs' and that leads to degraded
performance.
Fix this by converting 'shared_opp' in struct opp_table to an enum
and making dev_pm_opp_get_sharing_cpus() return -EINVAL in case when
the value of that field is "access unknown", so that the caller can
handle it accordingly (cpufreq-dt considers that as 'all CPUs share
the table', for example).
Fixes: 6f707daa3833 "PM / OPP: Add dev_pm_opp_get_sharing_cpus()"
Reported-and-tested-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
[ rjw : Subject & changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Yang Zhang [Mon, 13 Jun 2016 01:56:56 +0000 (09:56 +0800)]
kvm: vmx: check apicv is active before using VT-d posted interrupt
VT-d posted interrupt is relying on the CPU side's posted interrupt.
Need to check whether VCPU's APICv is active before enabing VT-d
posted interrupt.
Fixes: d62caabb41f33d96333f9ef15e09cd26e1c12760
Cc: stable@vger.kernel.org
Signed-off-by: Yang Zhang <yang.zhang.wz@gmail.com>
Signed-off-by: Shengge Ding <shengge.dsg@alibaba-inc.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Xiubo Li [Wed, 15 Jun 2016 10:00:33 +0000 (18:00 +0800)]
kvm: Fix irq route entries exceeding KVM_MAX_IRQ_ROUTES
These days, we experienced one guest crash with 8 cores and 3 disks,
with qemu error logs as bellow:
qemu-system-x86_64: /build/qemu-2.0.0/kvm-all.c:984:
kvm_irqchip_commit_routes: Assertion `ret == 0' failed.
And then we found one patch(
bdf026317d) in qemu tree, which said
could fix this bug.
Execute the following script will reproduce the BUG quickly:
irq_affinity.sh
========================================================================
vda_irq_num=25
vdb_irq_num=27
while [ 1 ]
do
for irq in {1,2,4,8,10,20,40,80}
do
echo $irq > /proc/irq/$vda_irq_num/smp_affinity
echo $irq > /proc/irq/$vdb_irq_num/smp_affinity
dd if=/dev/vda of=/dev/zero bs=4K count=100 iflag=direct
dd if=/dev/vdb of=/dev/zero bs=4K count=100 iflag=direct
done
done
========================================================================
The following qemu log is added in the qemu code and is displayed when
this bug reproduced:
kvm_irqchip_commit_routes: max gsi: 1008, nr_allocated_irq_routes: 1024,
irq_routes->nr: 1024, gsi_count: 1024.
That's to say when irq_routes->nr == 1024, there are 1024 routing entries,
but in the kernel code when routes->nr >= 1024, will just return -EINVAL;
The nr is the number of the routing entries which is in of
[1 ~ KVM_MAX_IRQ_ROUTES], not the index in [0 ~ KVM_MAX_IRQ_ROUTES - 1].
This patch fix the BUG above.
Cc: stable@vger.kernel.org
Signed-off-by: Xiubo Li <lixiubo@cmss.chinamobile.com>
Signed-off-by: Wei Tang <tangwei@cmss.chinamobile.com>
Signed-off-by: Zhang Zhuoyu <zhangzhuoyu@cmss.chinamobile.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Linus Torvalds [Thu, 16 Jun 2016 05:54:52 +0000 (19:54 -1000)]
Merge tag 'drm-fixes-for-v4.7-rc4' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"The main drm fixes pull for rc4: one regression fix in the connector
refcounting, and an MST fix.
There rest is nouveau, amdkfd, i915, etnaviv, and radeon/amdgpu fixes,
mostly regression or black screen fixes"
* tag 'drm-fixes-for-v4.7-rc4' of git://people.freedesktop.org/~airlied/linux: (23 commits)
drm/etnaviv: initialize iommu domain page size
drm/nouveau/iccsense: fix memory leak
drm/nouveau/Revert "drm/nouveau/device/pci: set as non-CPU-coherent on ARM64"
drm/amd/powerplay: select samu dpm 0 as boot level on polaris.
drm/amd/powerplay: update powerplay table parsing
drm/dp/mst: Always clear proposed vcpi table for port.
drm/crtc: only store the necessary data for set_config rollback
drm/crtc: fix connector reference counting mismatch in drm_crtc_helper_set_config
drm/i915/ilk: Don't disable SSC source if it's in use
Revert "drm/amdgpu: add pipeline sync while vmid switch in same ctx"
drm/amdgpu/gfx7: fix broken condition check
drm/radeon: fix asic initialization for virtualized environments
amdgpu: fix asic initialization for virtualized environments (v2)
drm/radeon: don't use fractional dividers on RS[78]80 if SS is enabled
drm/radeon: do not hard reset GPU while freezing on r600/r700 family
drm/i915: Extract physical display dimensions from VBT
drm/i915: Check VBT for port presence in addition to the strap on VLV/CHV
drm/i915: Only ignore eDP ports that are connected
drm/i915: Silence "unexpected child device config size" for VBT on 845g
drm/i915: Fix NULL pointer deference when out of PLLs in IVB
...
Linus Torvalds [Thu, 16 Jun 2016 05:42:19 +0000 (19:42 -1000)]
Merge tag 'platform-drivers-x86-v4.7-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86
Pull x86 platform driver fixes from Darren Hart:
"Minor kconfig dependency cleanup, trivial mic mute hotkey for ideapad,
and a needed improvement in adaptive keyboard detection for thinkpad:
platform/x86:
- Drop duplicate dependencies on X86
thinkpad_acpi:
- Add support for HKEY version 0x200
ideapad_laptop:
- Add an event for mic mute hotkey"
* tag 'platform-drivers-x86-v4.7-2' of git://git.infradead.org/users/dvhart/linux-platform-drivers-x86:
platform/x86: Drop duplicate dependencies on X86
thinkpad_acpi: Add support for HKEY version 0x200
ideapad_laptop: Add an event for mic mute hotkey
Linus Torvalds [Thu, 16 Jun 2016 02:23:38 +0000 (16:23 -1000)]
Merge tag 'upstream-4.7-rc4' of git://git.infradead.org/linux-ubifs
Pull UBI fixes from Richard Weinberger:
"This contains fixes for a regression introduced in rc1"
* tag 'upstream-4.7-rc4' of git://git.infradead.org/linux-ubifs:
ubi: Don't bypass ->getattr()
Revert "mtd: switch open_mtd_by_chdev() to use of vfs_stat()"
Revert "mtd: switch ubi_open_volume_path() to vfs_stat()"
Linus Torvalds [Thu, 16 Jun 2016 02:08:31 +0000 (16:08 -1000)]
Merge tag 'for-linus-4.7-2' of git://git.code.sf.net/p/openipmi/linux-ipmi
Pull ipmi bugfix from Corey Minyard:
"Fix a fairly significant ipmi list bug
This bug could cause lists to be corrupted"
* tag 'for-linus-4.7-2' of git://git.code.sf.net/p/openipmi/linux-ipmi:
ipmi: Remove smi_msg from waiting_rcv_msgs list before handle_one_recv_msg()
Oleg Drokin [Wed, 15 Jun 2016 03:28:06 +0000 (23:28 -0400)]
nfsd: Make init_open_stateid() a bit more whole
Move the state selection logic inside from the caller,
always making it return correct stp to use.
Signed-off-by: J . Bruce Fields <bfields@fieldses.org>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Oleg Drokin [Wed, 15 Jun 2016 03:28:05 +0000 (23:28 -0400)]
nfsd: Extend the mutex holding region around in nfsd4_process_open2()
To avoid racing entry into nfs4_get_vfs_file().
Make init_open_stateid() return with locked stateid to be unlocked
by the caller.
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Oleg Drokin [Wed, 15 Jun 2016 03:28:04 +0000 (23:28 -0400)]
nfsd: Always lock state exclusively.
It used to be the case that state had an rwlock that was locked for write
by downgrades, but for read for upgrades (opens). Well, the problem is
if there are two competing opens for the same state, they step on
each other toes potentially leading to leaking file descriptors
from the state structure, since access mode is a bitmap only set once.
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Linus Torvalds [Thu, 16 Jun 2016 01:55:49 +0000 (15:55 -1000)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull virtio docs and tests from Michael Tsirkin:
"This merely has some documentation and a new test, seems safe to
merge"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
tools/virtio: add noring tool
tools/virtio/ringtest: fix run-on-all.sh to work without /dev/cpu
tools/virtio/ringtest: add usage example to README
MAINTAINERS: Add file patterns for virtio device tree bindings
Shuah Khan [Tue, 14 Jun 2016 22:30:27 +0000 (16:30 -0600)]
Update email addresses in MAINTAINERS and .mailmap
Updating email addresses in MAINTAINERS and .mailmap files.
Cc: stable@vger.kernel.org
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Mauro Carvalho Chehab [Tue, 14 Jun 2016 18:17:40 +0000 (15:17 -0300)]
Update my main e-mails at the Kernel tree
For the third time in three years, I'm changing my e-mail at Samsung.
That's bad, as it may stop communications with me for a while. So, this
time, I'll also add the mchehab@kernel.org e-mail, as it remains stable
since ever.
Cc: stable@vger.kernel.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Dave Airlie [Thu, 16 Jun 2016 00:24:13 +0000 (10:24 +1000)]
Merge branch 'drm-fixes-4.7' of git://people.freedesktop.org/~agd5f/linux into drm-fixes
radeon and amdgpu fixes for 4.7. Highlights:
- fixes for GPU VM passthrough
- fixes for powerplay on Polaris GPUs
- pll fixes for rs780/880
* 'drm-fixes-4.7' of git://people.freedesktop.org/~agd5f/linux:
drm/amd/powerplay: select samu dpm 0 as boot level on polaris.
drm/amd/powerplay: update powerplay table parsing
Revert "drm/amdgpu: add pipeline sync while vmid switch in same ctx"
drm/amdgpu/gfx7: fix broken condition check
drm/radeon: fix asic initialization for virtualized environments
amdgpu: fix asic initialization for virtualized environments (v2)
drm/radeon: don't use fractional dividers on RS[78]80 if SS is enabled
drm/radeon: do not hard reset GPU while freezing on r600/r700 family
Suravee Suthikulpanit [Wed, 15 Jun 2016 22:24:36 +0000 (17:24 -0500)]
kvm: svm: Do not support AVIC if not CONFIG_X86_LOCAL_APIC
Add logic to disable AVIC #ifndef CONFIG_X86_LOCAL_APIC.
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Suravee Suthikulpanit [Wed, 15 Jun 2016 22:23:45 +0000 (17:23 -0500)]
kvm: svm: Fix implicit declaration for __default_cpu_present_to_apicid()
The commit
8221c1370056 ("svm: Manage vcpu load/unload when enable AVIC")
introduces a build error due to implicit function declaration
when #ifdef CONFIG_X86_32 and #ifndef CONFIG_X86_LOCAL_APIC
(as reported by Kbuild test robot i386-randconfig-x0-
06121009).
So, this patch introduces kvm_cpu_get_apicid() wrapper
around __default_cpu_present_to_apicid() with additional
handling if CONFIG_X86_LOCAL_APIC is not defined.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Fixes: commit 8221c1370056 ("svm: Manage vcpu load/unload when enable AVIC")
Signed-off-by: Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Dave Airlie [Wed, 15 Jun 2016 20:27:05 +0000 (06:27 +1000)]
Merge branch 'drm-etnaviv-fixes' of git://git.pengutronix.de/git/lst/linux into drm-fixes
just a single fix for a regression introduced by IOMMU API changes in
v4.7.
* 'drm-etnaviv-fixes' of git://git.pengutronix.de/git/lst/linux:
drm/etnaviv: initialize iommu domain page size
J. Bruce Fields [Tue, 17 May 2016 16:38:21 +0000 (12:38 -0400)]
rpc: share one xps between all backchannels
The spec allows backchannels for multiple clients to share the same tcp
connection. When that happens, we need to use the same xprt for all of
them. Similarly, we need the same xps.
This fixes list corruption introduced by the multipath code.
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Acked-by: Trond Myklebust <trondmy@primarydata.com>
J. Bruce Fields [Mon, 16 May 2016 21:03:42 +0000 (17:03 -0400)]
nfsd4/rpc: move backchannel create logic into rpc code
Also simplify the logic a bit.
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Acked-by: Trond Myklebust <trondmy@primarydata.com>
J. Bruce Fields [Fri, 20 May 2016 21:07:17 +0000 (17:07 -0400)]
SUNRPC: fix xprt leak on xps allocation failure
Callers of rpc_create_xprt expect it to put the xprt on success and
failure.
Cc: stable@vger.kernel.org
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Acked-by: Trond Myklebust <trondmy@primarydata.com>
Miklos Szeredi [Wed, 15 Jun 2016 12:18:59 +0000 (14:18 +0200)]
ovl: fix uid/gid when creating over whiteout
Fix a regression when creating a file over a whiteout. The new
file/directory needs to use the current fsuid/fsgid, not the ones from the
mounter's credentials.
The refcounting is a bit tricky: prepare_creds() sets an original refcount,
override_creds() gets one more, which revert_cred() drops. So
1) we need to expicitly put the mounter's credentials when overriding
with the updated one
2) we need to put the original ref to the updated creds (and this can
safely be done before revert_creds(), since we'll still have the ref
from override_creds()).
Reported-by: Stephen Smalley <sds@tycho.nsa.gov>
Fixes: 3fe6e52f0626 ("ovl: override creds with the ones from the superblock mounter")
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Will Deacon [Thu, 2 Jun 2016 17:40:07 +0000 (18:40 +0100)]
arm64: spinlock: Ensure forward-progress in spin_unlock_wait
Rather than wait until we observe the lock being free (which might never
happen), we can also return from spin_unlock_wait if we observe that the
lock is now held by somebody else, which implies that it was unlocked
but we just missed seeing it in that state.
Furthermore, in such a scenario there is no longer a need to write back
the value that we loaded, since we know that there has been a lock
hand-off, which is sufficient to publish any stores prior to the
unlock_wait because the ARm architecture ensures that a Store-Release
instruction is multi-copy atomic when observed by a Load-Acquire
instruction.
The litmus test is something like:
AArch64
{
0:X1=x; 0:X3=y;
1:X1=y;
2:X1=y; 2:X3=x;
}
P0 | P1 | P2 ;
MOV W0,#1 | MOV W0,#1 | LDAR W0,[X1] ;
STR W0,[X1] | STLR W0,[X1] | LDR W2,[X3] ;
DMB SY | | ;
LDR W2,[X3] | | ;
exists
(0:X2=0 /\ 2:X0=1 /\ 2:X2=0)
where P0 is doing spin_unlock_wait, P1 is doing spin_unlock and P2 is
doing spin_lock.
Signed-off-by: Will Deacon <will.deacon@arm.com>
John Keeping [Wed, 1 Jun 2016 15:46:10 +0000 (16:46 +0100)]
iommu/rockchip: Fix zap cache during device attach
rk_iommu_command() takes a struct rk_iommu and iterates over the slave
MMUs, so this is doubly wrong in that we're passing in the wrong pointer
and talking to MMUs that we shouldn't be.
Fixes: cd6438c5f844 ("iommu/rockchip: Reconstruct to support multi slaves")
Cc: stable@vger.kernel.org
Signed-off-by: John Keeping <john@metanate.com>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Lucas Stach [Mon, 13 Jun 2016 16:28:42 +0000 (18:28 +0200)]
drm/etnaviv: initialize iommu domain page size
Since
d16e0faab91 (iommu: Allow selecting page sizes per domain) the
iommu core demands the page size to be set per domain, otherwise any
mapping attempts will be dropped. Make sure to set a valid page size
for the etnaviv iommu.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Will Deacon [Wed, 8 Jun 2016 14:10:57 +0000 (15:10 +0100)]
arm64: spinlock: fix spin_unlock_wait for LSE atomics
Commit
d86b8da04dfa ("arm64: spinlock: serialise spin_unlock_wait against
concurrent lockers") fixed spin_unlock_wait for LL/SC-based atomics under
the premise that the LSE atomics (in particular, the LDADDA instruction)
are indivisible.
Unfortunately, these instructions are only indivisible when used with the
-AL (full ordering) suffix and, consequently, the same issue can
theoretically be observed with LSE atomics, where a later (in program
order) load can be speculated before the write portion of the atomic
operation.
This patch fixes the issue by performing a CAS of the lock once we've
established that it's unlocked, in much the same way as the LL/SC code.
Fixes: d86b8da04dfa ("arm64: spinlock: serialise spin_unlock_wait against concurrent lockers")
Signed-off-by: Will Deacon <will.deacon@arm.com>
Will Deacon [Thu, 2 Jun 2016 14:27:04 +0000 (15:27 +0100)]
arm64: spinlock: order spin_{is_locked,unlock_wait} against local locks
spin_is_locked has grown two very different use-cases:
(1) [The sane case] API functions may require a certain lock to be held
by the caller and can therefore use spin_is_locked as part of an
assert statement in order to verify that the lock is indeed held.
For example, usage of assert_spin_locked.
(2) [The insane case] There are two locks, where a CPU takes one of the
locks and then checks whether or not the other one is held before
accessing some shared state. For example, the "optimized locking" in
ipc/sem.c.
In the latter case, the sequence looks like:
spin_lock(&sem->lock);
if (!spin_is_locked(&sma->sem_perm.lock))
/* Access shared state */
and requires that the spin_is_locked check is ordered after taking the
sem->lock. Unfortunately, since our spinlocks are implemented using a
LDAXR/STXR sequence, the read of &sma->sem_perm.lock can be speculated
before the STXR and consequently return a stale value.
Whilst this hasn't been seen to cause issues in practice, PowerPC fixed
the same issue in
51d7d5205d33 ("powerpc: Add smp_mb() to
arch_spin_is_locked()") and, although we did something similar for
spin_unlock_wait in
d86b8da04dfa ("arm64: spinlock: serialise
spin_unlock_wait against concurrent lockers") that doesn't actually take
care of ordering against local acquisition of a different lock.
This patch adds an smp_mb() to the start of our arch_spin_is_locked and
arch_spin_unlock_wait routines to ensure that the lock value is always
loaded after any other locks have been taken by the current CPU.
Reported-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Mark Salter [Tue, 7 Jun 2016 16:32:21 +0000 (11:32 -0500)]
arm: pmu: Fix non-devicetree probing
There is a problem in the non-devicetree PMU probing where some
probe functions may get the number of supported events through
smp_call_function_any() using the arm_pmu supported_cpus mask.
But at the time the probe function is called, the supported_cpus
mask is empty so the call fails. This patch makes sure the mask
is set before calling the init function rather than after.
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Dave Airlie [Wed, 15 Jun 2016 06:58:32 +0000 (16:58 +1000)]
Merge branch 'linux-4.7' of git://github.com/skeggsb/linux into drm-fixes
* 'linux-4.7' of git://github.com/skeggsb/linux:
drm/nouveau/iccsense: fix memory leak
drm/nouveau/Revert "drm/nouveau/device/pci: set as non-CPU-coherent on ARM64"
Ben Skeggs [Thu, 26 May 2016 07:04:52 +0000 (17:04 +1000)]
drm/nouveau/iccsense: fix memory leak
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Robin Murphy [Mon, 6 Jun 2016 07:11:52 +0000 (16:11 +0900)]
drm/nouveau/Revert "drm/nouveau/device/pci: set as non-CPU-coherent on ARM64"
This reverts commit
1733a2ad36741b1812cf8b3f3037c28d0af53f50.
There is apparently something amiss with the way the TTM code handles
DMA buffers, which the above commit was attempting to work around for
arm64 systems with non-coherent PCI. Unfortunately, this completely
breaks systems *with* coherent PCI (which appear to be the majority).
Booting a plain arm64 defconfig + CONFIG_DRM + CONFIG_DRM_NOUVEAU on
a machine with a PCI GPU having coherent dma_map_ops (in this case a
7600GT card plugged into an ARM Juno board) results in a fatal crash:
[ 2.803438] nouveau 0000:06:00.0: DRM: allocated 1024x768 fb: 0x9000, bo
ffffffc976141c00
[ 2.897662] Unable to handle kernel NULL pointer dereference at virtual address
000001ac
[ 2.897666] pgd =
ffffff8008e00000
[ 2.897675] [
000001ac] *pgd=
00000009ffffe003, *pud=
00000009ffffe003, *pmd=
0000000000000000
[ 2.897680] Internal error: Oops:
96000045 [#1] PREEMPT SMP
[ 2.897685] Modules linked in:
[ 2.897692] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.6.0-rc5+ #543
[ 2.897694] Hardware name: ARM Juno development board (r1) (DT)
[ 2.897699] task:
ffffffc9768a0000 ti:
ffffffc9768a8000 task.ti:
ffffffc9768a8000
[ 2.897711] PC is at __memcpy+0x7c/0x180
[ 2.897719] LR is at OUT_RINGp+0x34/0x70
[ 2.897724] pc : [<
ffffff80083465fc>] lr : [<
ffffff800854248c>] pstate:
80000045
[ 2.897726] sp :
ffffffc9768ab360
[ 2.897732] x29:
ffffffc9768ab360 x28:
0000000000000001
[ 2.897738] x27:
ffffffc97624c000 x26:
0000000000000000
[ 2.897744] x25:
0000000000000080 x24:
0000000000006c00
[ 2.897749] x23:
0000000000000005 x22:
ffffffc97624c010
[ 2.897755] x21:
0000000000000004 x20:
0000000000000004
[ 2.897761] x19:
ffffffc9763da000 x18:
ffffffc976b2491c
[ 2.897766] x17:
0000000000000007 x16:
0000000000000006
[ 2.897771] x15:
0000000000000001 x14:
0000000000000001
[ 2.897777] x13:
0000000000e31b70 x12:
ffffffc9768a0080
[ 2.897783] x11:
0000000000000000 x10:
fffffffffffffb00
[ 2.897788] x9 :
0000000000000000 x8 :
0000000000000000
[ 2.897793] x7 :
0000000000000000 x6 :
00000000000001ac
[ 2.897799] x5 :
00000000ffffffff x4 :
0000000000000000
[ 2.897804] x3 :
0000000000000010 x2 :
0000000000000010
[ 2.897810] x1 :
ffffffc97624c010 x0 :
00000000000001ac
...
[ 2.898494] Call trace:
[ 2.898499] Exception stack(0xffffffc9768ab1a0 to 0xffffffc9768ab2c0)
[ 2.898506] b1a0:
ffffffc9763da000 0000000000000004 ffffffc9768ab360 ffffff80083465fc
[ 2.898513] b1c0:
ffffffc976801e00 ffffffc9762b8000 ffffffc9768ab1f0 ffffff80080ec158
[ 2.898520] b1e0:
ffffffc9768ab230 ffffff8008496d04 ffffffc975ce6d80 ffffffc9768ab36e
[ 2.898527] b200:
ffffffc9768ab36f ffffffc9768ab29d ffffffc9768ab29e ffffffc9768a0000
[ 2.898533] b220:
ffffffc9768ab250 ffffff80080e70c0 ffffffc9768ab270 ffffff8008496e44
[ 2.898540] b240:
00000000000001ac ffffffc97624c010 0000000000000010 0000000000000010
[ 2.898546] b260:
0000000000000000 00000000ffffffff 00000000000001ac 0000000000000000
[ 2.898552] b280:
0000000000000000 0000000000000000 fffffffffffffb00 0000000000000000
[ 2.898558] b2a0:
ffffffc9768a0080 0000000000e31b70 0000000000000001 0000000000000001
[ 2.898566] [<
ffffff80083465fc>] __memcpy+0x7c/0x180
[ 2.898574] [<
ffffff800853e164>] nv04_fbcon_imageblit+0x1d4/0x2e8
[ 2.898582] [<
ffffff800853d6d0>] nouveau_fbcon_imageblit+0xd8/0xe0
[ 2.898591] [<
ffffff80083c4db4>] soft_cursor+0x154/0x1d8
[ 2.898598] [<
ffffff80083c47b4>] bit_cursor+0x4fc/0x538
[ 2.898605] [<
ffffff80083c0cfc>] fbcon_cursor+0x134/0x1a8
[ 2.898613] [<
ffffff800841c280>] hide_cursor+0x38/0xa0
[ 2.898620] [<
ffffff800841d420>] redraw_screen+0x120/0x228
[ 2.898628] [<
ffffff80083bf268>] fbcon_prepare_logo+0x370/0x3f8
[ 2.898635] [<
ffffff80083bf640>] fbcon_init+0x350/0x560
[ 2.898641] [<
ffffff800841c634>] visual_init+0xac/0x108
[ 2.898648] [<
ffffff800841df14>] do_bind_con_driver+0x1c4/0x3a8
[ 2.898655] [<
ffffff800841e4f4>] do_take_over_console+0x174/0x1e8
[ 2.898662] [<
ffffff80083bf8c4>] do_fbcon_takeover+0x74/0x100
[ 2.898669] [<
ffffff80083c3e44>] fbcon_event_notify+0x8cc/0x920
[ 2.898680] [<
ffffff80080d7e38>] notifier_call_chain+0x50/0x90
[ 2.898685] [<
ffffff80080d8214>] __blocking_notifier_call_chain+0x4c/0x90
[ 2.898691] [<
ffffff80080d826c>] blocking_notifier_call_chain+0x14/0x20
[ 2.898696] [<
ffffff80083c5e1c>] fb_notifier_call_chain+0x1c/0x28
[ 2.898703] [<
ffffff80083c81ac>] register_framebuffer+0x1cc/0x2e0
[ 2.898712] [<
ffffff800845da80>] drm_fb_helper_initial_config+0x288/0x3e8
[ 2.898719] [<
ffffff800853da20>] nouveau_fbcon_init+0xe0/0x118
[ 2.898727] [<
ffffff800852d2f8>] nouveau_drm_load+0x268/0x890
[ 2.898734] [<
ffffff8008466e24>] drm_dev_register+0xbc/0xc8
[ 2.898740] [<
ffffff8008468a88>] drm_get_pci_dev+0xa0/0x180
[ 2.898747] [<
ffffff800852cb28>] nouveau_drm_probe+0x1a0/0x1e0
[ 2.898755] [<
ffffff80083a32e0>] pci_device_probe+0x98/0x110
[ 2.898763] [<
ffffff800858e434>] driver_probe_device+0x204/0x2b0
[ 2.898770] [<
ffffff800858e58c>] __driver_attach+0xac/0xb0
[ 2.898777] [<
ffffff800858c3e0>] bus_for_each_dev+0x60/0xa0
[ 2.898783] [<
ffffff800858dbc0>] driver_attach+0x20/0x28
[ 2.898789] [<
ffffff800858d7b0>] bus_add_driver+0x1d0/0x238
[ 2.898796] [<
ffffff800858ed50>] driver_register+0x60/0xf8
[ 2.898802] [<
ffffff80083a20dc>] __pci_register_driver+0x3c/0x48
[ 2.898809] [<
ffffff8008468eb4>] drm_pci_init+0xf4/0x120
[ 2.898818] [<
ffffff8008c56fc0>] nouveau_drm_init+0x21c/0x230
[ 2.898825] [<
ffffff80080829d4>] do_one_initcall+0x8c/0x190
[ 2.898832] [<
ffffff8008c31af4>] kernel_init_freeable+0x14c/0x1f0
[ 2.898839] [<
ffffff80088a0c20>] kernel_init+0x10/0x100
[ 2.898845] [<
ffffff8008085e10>] ret_from_fork+0x10/0x40
[ 2.898853] Code:
a88120c7 a8c12027 a88120c7 a8c12027 (
a88120c7)
[ 2.898871] ---[ end trace
d5713dcad023ee04 ]---
[ 2.898888] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
In a toss-up between the GPU seeing stale data artefacts on some systems
vs. catastrophic kernel crashes on other systems, the latter would seem
to take precedence, so revert this change until the real underlying
problem can be fixed.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Acked-by: Alexandre Courbot <acourbot@nvidia.com>
[acourbot@nvidia.com: port to Nouveau tree, remove bits in lib/]
Signed-off-by: Alexandre Courbot <acourbot@nvidia.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Cc: stable@vger.kernel.org
Rex Zhu [Sun, 12 Jun 2016 03:18:01 +0000 (11:18 +0800)]
drm/amd/powerplay: select samu dpm 0 as boot level on polaris.
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>
Rex Zhu [Wed, 8 Jun 2016 11:04:35 +0000 (19:04 +0800)]
drm/amd/powerplay: update powerplay table parsing
to handle pptable format change on Polaris boards
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>
Andrey Grodzovsky [Wed, 25 May 2016 20:45:43 +0000 (16:45 -0400)]
drm/dp/mst: Always clear proposed vcpi table for port.
Not clearing mst manager's proposed vcpis table for destroyed connectors when the manager is stopped leaves it pointing to unrefernced memory, this causes pagefault when the manager is restarted when plugging back a branch.
Fixes: 91a25e463130 ("drm/dp/mst: deallocate payload on port destruction")
Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
Reviewed-by: Lyude <cpaul@redhat.com>
Cc: stable@vger.kernel.org
Cc: Mykola Lysenko <Mykola.Lysenko@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Philipp Zabel [Thu, 2 Jun 2016 17:27:52 +0000 (19:27 +0200)]
drm/crtc: only store the necessary data for set_config rollback
drm_crtc_helper_set_config only potentially touches connector->encoder
and encoder->crtc, so we only have to store those for all connectors
and encoders, respectively.
Suggested-by: Daniel Vetter <daniel@ffwll.ch>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Philipp Zabel [Thu, 2 Jun 2016 17:27:51 +0000 (19:27 +0200)]
drm/crtc: fix connector reference counting mismatch in drm_crtc_helper_set_config
Since commit
0955c1250e96 ("drm/crtc: take references to connectors used
in a modeset. (v2)"), the reference counts of all connectors in the
drm_mode_set given to drm_crtc_helper_set_config are incremented, and then
the reference counts of all connectors are decremented on success, but in a
temporary copy of the connector structure. This leads to the following
error after the first modeset on imx-drm:
Unable to handle kernel NULL pointer dereference at virtual address
00000004
pgd =
ad8c4000
[
00000004] *pgd=
3d9c5831, *pte=
00000000, *ppte=
00000000
Internal error: Oops: 817 [#1] PREEMPT SMP ARM
Modules linked in:
CPU: 1 PID: 190 Comm: kmsfb-manage Not tainted 4.7.0-rc1+ #657
Hardware name: Freescale i.MX6 Quad/DualLit: [<
80506098>] lr : [<
80252e94>] psr:
200c0013
sp :
adca7ca8 ip :
adca7b90 fp :
adca7cd4
r10:
00000000 r9 :
00000100 r8 :
00000200
r7 :
af3c9800 r6 :
aded7848 r5 :
aded7800 r4 :
00000000
r3 :
af3ca058 r2 :
00000200 r1 :
af3ca058 r0 :
00000000
Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
Control:
10c5387d Table:
3d8c404a DAC:
00000051
Process kmsfb-manage (pid: 190, stack limit = 0xadca6210)
Stack: (0xadca7ca8 to 0xadca8000)
7ca0:
805190e0 aded7800 aded7820 80501a88 8155a290 af3c9c6c
7cc0:
adca7ddc 0000000f adca7cec adca7cd8 80519104 80506044 805190e0 aded7800
7ce0:
adca7d04 adca7cf0 80501ac0 805190ec aded7820 aded7814 adca7d24 adca7d08
7d00:
804fdb80 80501a94 aded7800 af3ca010 aded7afc af3c9c60 adca7d94 adca7d28
7d20:
804e3518 804fdb20 00000000 af3c9b1c adca7d50 81506f44 00000000 8093c500
7d40:
af3c9c6c ae4f2ca8 ae4f2c18 00000000 00000000 ae637f00 00000000 aded7800
7d60:
00000001 af3c9800 af23c300 ae77fcc0 ae4f2c18 00000001 af3c9800 8155a290
7d80:
af1af700 adca6000 adca7db4 adca7d98 804fea6c 804e2de4 adca7e50 adb3d940
7da0:
00000001 af3c9800 adca7e24 adca7db8 8050440c 804fea0c ae77fcc0 00000003
7dc0:
adca7e24 adb3d940 af1af700 ae77fcc0 ae77fccc ae4f2c18 8083d44c ae77fcc0
7de0: ae4002
80d03040 adca7e64 adca7e40 adca7e50 80503f08
7e40:
7ebd5630 adca7e50 00000068 c06864a2 7ebd5be8 00000000 00000001 00000018
7e60:
00000026 00000000 00000000 00000000 00000001 000115bc 05010500 05a0059f
7e80:
03200000 03360321 00000337 0000003c 00000000 00000040 30383231 30303878
7ea0:
00000000 00000000 00000000 00000000 00000000 00000000 80173058 80172e30
7ec0:
80d77d32 00004000 adf7d900 00000003 00000000 7ebd5630 af342bb0 adfe3b80
7ee0:
80272f50 00000003 adca6000 00000000 adca7f7c adca7f00 802725ec 804f52cc
7f00:
802809cc 80178450 00000000 00000000 80280880 80145904 adb3d8c0 adf7d990
7f20:
ffffffff 00000003 00004000 01614c10 c06864a2 00000003 adca6000 00000000
7f40:
adca7f6c adca7f50 80280b04 8028088c 000115bc adfe3b81 7ebd5630 adfe3b80
7f60:
c06864a2 00000003 adca6000 00000000 adca7fa4 adca7f80 80272f50 80272548
7f80:
000115bc 00017050 00000001 01614c10 00000036 801089e4 00000000 adca7fa8
7fa0:
80108840 80272f18 00017050 00000001 00000003 c06864a2 7ebd5630 000115bc
7fc0:
00017050 00000001 01614c10 00000036 00000003 00000000 00000026 00000018
7fe0:
00016f38 7ebd562c 0000b5e9 76ef31e6 400c0030 00000003 ff5f37db bfe7dd4d
Backtrace:
[<
80506038>] (drm_connector_cleanup) from [<
80519104>] (dw_hdmi_connector_destroy+0x24/0x28)
r10:
0000000f r9:
adca7ddc r8:
af3c9c6c r7:
8155a290 r6:
80501a88 r5:
aded7820
r4:
aded7800 r3:
805190e0
[<
805190e0>] (dw_hdmi_connector_destroy) from [<
80501ac0>] (drm_connector_free+0x38/0x3c)
r4:
aded7800 nreference) from [<
804e3518>] (drm_crtc_helper_set_config+0x740/0xbf4)
r6:
af3c9c60 r5:
aded7afc r4:
af3ca010 r3:
aded7800
[<
804e2dd8>] (drm_crtc_helper_set_config) from [<
804fea6c>] (drm_mode_set_config_internal+0x6c/0xf4)
r10:
adca6000 r9:
af1af700 r8:
8155a290 r7:
af3c9800 r6:
00000001 r5:
ae4f2c18
r4:
ae77fcc0
[<
804fea00>] (drm_mode_set_config_internal) from [<
8050440c>] (drm_mode_setcrtc+0x504/0x57c)
r7:
af3c9800 r6:
00000001 r5:
adb3d940 r4:
adca7e50
[<
80503f08>] (drm_mode_setcrtc) from [<
804f5404>] (drm_ioctl+0x144/0x4dc)
r10:
ada2e000 r9:
000000a2 r8:
af3c9800 r7:
8155a290 r6:
809320b4 r5:
00000051
r4:
adca7e50
[<
804f52c0>] (drm_ioctl) from [<
802725ec>] (do_vfs_ioctl+0xb0/0x9d0)
r10:
00000000 r9:
adca6000 r8:
00000003 r7:
80272f50 r6:
adfe3b80 r5:
af342bb0
r4:
7ebd5630
[<
8027253c>] (do_vfs_ioctl) from [<
80272f50>] (SyS_ioctl+0x44/0x6c)
r10:
00000000 r9:
adca6000 r8:
00000003 r7:
c06864a2 r6:
adfe3b80 r5:
7ebd5630
r4:
adfe3b81
[<
80272f0c>] (SyS_ioctl) from [<
80108840>] (ret_fast_syscall+0x0/0x1c)
r8:
801089e4 r7:
00000036 r6:
01614c10 r5:
00000001 r4:
00017050 r3:
000115bc
Code:
0a00000c e5932004 e1a01003 e1a0a004 (
e5842004)
---[ end trace
9a7257572ccacb16 ]---
Only the reference count of connectors that weren't previously bound to
an encoder should be incremented after a call to drm_crtc_helper_set_config.
And only the reference count of connectors that were previously bound to
an encoder and are unbound afterwards should ever be decremented.
The reference counts of the temporary copies in the save_connectors
should not be touched at all.
This patch fixes the above error by only incrementing the reference count
of those connectors in the set that are initially not bound to any encoder,
and also by restoring the reference count of only those connectors in the
set in the failure case.
"Note that this can only be hit when fbdev emulation is disabled, since
then the refcount drops from 1 to 0 and we call the connector destroy
functions on the backup copy, which eventually results in tears. With
fbdev emulation the refcount only goes down from 2 to 1 ever. And since we
unconditionally increment the refcount on the real object, the refcount of
that will slowly increase. The backup connector's refcount doesn't matter,
since we kfree() that either way in the end of
drm_crtc_helper_set_config()."
Fixes: 0955c1250e96 ("drm/crtc: take references to connectors used in a modeset. (v2)")
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Dave Airlie [Wed, 15 Jun 2016 00:30:23 +0000 (10:30 +1000)]
Merge tag 'drm-intel-fixes-2016-06-14' of git://anongit.freedesktop.org/drm-intel into drm-fixes
"Pretty much all regression fixes, or black screens."
* tag 'drm-intel-fixes-2016-06-14' of git://anongit.freedesktop.org/drm-intel:
drm/i915/ilk: Don't disable SSC source if it's in use
drm/i915: Extract physical display dimensions from VBT
drm/i915: Check VBT for port presence in addition to the strap on VLV/CHV
drm/i915: Only ignore eDP ports that are connected
drm/i915: Silence "unexpected child device config size" for VBT on 845g
drm/i915: Fix NULL pointer deference when out of PLLs in IVB
Rafael J. Wysocki [Wed, 15 Jun 2016 00:16:13 +0000 (02:16 +0200)]
Revert "ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for acpi_hw_write()"
Revert commit
66b1ed5aa8dd "ACPICA: ACPI 2.0, Hardware: Add
access_width/bit_offset support for acpi_hw_write()" that is reported
to break suspend-to-RAM (ACPI S3) on one system.
The root cause of the failure is a wrong access width value for one of
the involved registers provided by the ACPI tables, but before commit
66b1ed5aa8dd that value was not taken into account at all and things
worked.
Fixes: 66b1ed5aa8dd "ACPICA: ACPI 2.0, Hardware: Add access_width/bit_offset support for acpi_hw_write()"
Reported-by: Andrey Skvortsov <andrej.skvortzov@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Srinivas Pandruvada [Wed, 15 Jun 2016 06:12:59 +0000 (23:12 -0700)]
cpufreq: intel_pstate: Adjust _PSS[0] freqeuency if needed
The maximum turbo P-State used by the intel_pstate driver may be
limited by ACPI _PSS table entry 0. After commit
9522a2ff9cde
(cpufreq: intel_pstate: Enforce _PPC limits), the maximum performance
on servers will be capped by the _PSS table entry 0 by default.
Even though that is formally correct, it may lead to preformance
regressions in some cases. Namely, if the _PSS table entry 0 is
not the maximum turbo P-State, performance measured after commit
9522a2ff9cde will not match the performance measured before that
commit on the same system.
For this reason, modify the code to always use the maximum turbo
frequency as the one that corresponds to _PSS table entry 0 if turbo
is enabled in the BIOS. This way, the performance levels from
before commit
9522a2ff9cde will be restored on the affected systems.
Fixes: 9522a2ff9cde (cpufreq: intel_pstate: Enforce _PPC limits)
Suggested-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
[ rjw : Changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Lyude [Tue, 14 Jun 2016 15:04:09 +0000 (11:04 -0400)]
drm/i915/ilk: Don't disable SSC source if it's in use
Thanks to Ville Syrjälä for pointing me towards the cause of this issue.
Unfortunately one of the sideaffects of having the refclk for a DPLL set
to SSC is that as long as it's set to SSC, the GPU will prevent us from
powering down any of the pipes or transcoders using it. A couple of
BIOSes enable SSC in both PCH_DREF_CONTROL and in the DPLL
configurations. This causes issues on the first modeset, since we don't
expect SSC to be left on and as a result, can't successfully power down
the pipes or the transcoders using it. Here's an example from this Dell
OptiPlex 990:
[drm:intel_modeset_init] SSC enabled by BIOS, overriding VBT which says disabled
[drm:intel_modeset_init] 2 display pipes available.
[drm:intel_update_cdclk] Current CD clock rate: 400000 kHz
[drm:intel_update_max_cdclk] Max CD clock rate: 400000 kHz
[drm:intel_update_max_cdclk] Max dotclock rate: 360000 kHz
vgaarb: device changed decodes: PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[drm:intel_crt_reset] crt adpa set to 0xf40000
[drm:intel_dp_init_connector] Adding DP connector on port C
[drm:intel_dp_aux_init] registering DPDDC-C bus for card0-DP-1
[drm:ironlake_init_pch_refclk] has_panel 0 has_lvds 0 has_ck505 0
[drm:ironlake_init_pch_refclk] Disabling SSC entirely
… later we try committing the first modeset …
[drm:intel_dump_pipe_config] [CRTC:26][modeset] config
ffff88041b02e800 for pipe A
[drm:intel_dump_pipe_config] cpu_transcoder: A
…
[drm:intel_dump_pipe_config] dpll_hw_state: dpll: 0xc4016001, dpll_md: 0x0, fp0: 0x20e08, fp1: 0x30d07
[drm:intel_dump_pipe_config] planes on this crtc
[drm:intel_dump_pipe_config] STANDARD PLANE:23 plane: 0.0 idx: 0 enabled
[drm:intel_dump_pipe_config] FB:42, fb = 800x600 format = 0x34325258
[drm:intel_dump_pipe_config] scaler:0 src (0, 0) 800x600 dst (0, 0) 800x600
[drm:intel_dump_pipe_config] CURSOR PLANE:25 plane: 0.1 idx: 1 disabled, scaler_id = 0
[drm:intel_dump_pipe_config] STANDARD PLANE:27 plane: 0.1 idx: 2 disabled, scaler_id = 0
[drm:intel_get_shared_dpll] CRTC:26 allocated PCH DPLL A
[drm:intel_get_shared_dpll] using PCH DPLL A for pipe A
[drm:ilk_audio_codec_disable] Disable audio codec on port C, pipe A
[drm:intel_disable_pipe] disabling pipe A
------------[ cut here ]------------
WARNING: CPU: 1 PID: 130 at drivers/gpu/drm/i915/intel_display.c:1146 intel_disable_pipe+0x297/0x2d0 [i915]
pipe_off wait timed out
…
---[ end trace
94fc8aa03ae139e8 ]---
[drm:intel_dp_link_down]
[drm:ironlake_crtc_disable [i915]] *ERROR* failed to disable transcoder A
Later modesets succeed since they reset the DPLL's configuration anyway,
but this is enough to get stuck with a big fat warning in dmesg.
A better solution would be to add refcounts for the SSC source, but for
now leaving the source clock on should suffice.
Changes since v4:
- Fix calculation of final for systems with LVDS panels (fixes BUG() on
CI test suite)
Changes since v3:
- Move temp variable into loop
- Move checks for using_ssc_source to after we've figured out has_ck505
- Add using_ssc_source to debug output
Changes since v2:
- Fix debug output for when we disable the CPU source
Changes since v1:
- Leave the SSC source clock on instead of just shutting it off on all
of the DPLL configurations.
Cc: stable@vger.kernel.org
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Lyude <cpaul@redhat.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/1465916649-10228-1-git-send-email-cpaul@redhat.com
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Geert Uytterhoeven [Fri, 25 Mar 2016 10:47:11 +0000 (11:47 +0100)]
nfsd: Fix NFSD_MDS_PR_KEY on 32-bit by adding ULL postfix
On 32-bit:
fs/nfsd/blocklayout.c: In function ‘nfsd4_block_get_device_info_scsi’:
fs/nfsd/blocklayout.c:337: warning: integer constant is too large for ‘long’ type
fs/nfsd/blocklayout.c:344: warning: integer constant is too large for ‘long’ type
fs/nfsd/blocklayout.c: In function ‘nfsd4_scsi_fence_client’:
fs/nfsd/blocklayout.c:385: warning: integer constant is too large for ‘long’ type
Add the missing "ULL" postfix to 64-bit constant NFSD_MDS_PR_KEY to fix
this.
Fixes: f99d4fbdae6765d0 ("nfsd: add SCSI layout support")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Mark Rutland [Mon, 13 Jun 2016 16:57:02 +0000 (17:57 +0100)]
arm64: mm: mark fault_info table const
Unlike the debug_fault_info table, we never intentionally alter the
fault_info table at runtime, and all derived pointers are treated as
const currently.
Make the table const so that it can be placed in .rodata and protected
from unintentional writes, as we do for the syscall tables.
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Mark Rutland [Mon, 13 Jun 2016 10:15:14 +0000 (11:15 +0100)]
arm64: fix dump_instr when PAN and UAO are in use
If the kernel is set to show unhandled signals, and a user task does not
handle a SIGILL as a result of an instruction abort, we will attempt to
log the offending instruction with dump_instr before killing the task.
We use dump_instr to log the encoding of the offending userspace
instruction. However, dump_instr is also used to dump instructions from
kernel space, and internally always switches to KERNEL_DS before dumping
the instruction with get_user. When both PAN and UAO are in use, reading
a user instruction via get_user while in KERNEL_DS will result in a
permission fault, which leads to an Oops.
As we have regs corresponding to the context of the original instruction
abort, we can inspect this and only flip to KERNEL_DS if the original
abort was taken from the kernel, avoiding this issue. At the same time,
remove the redundant (and incorrect) comments regarding the order
dump_mem and dump_instr are called in.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morse <james.morse@arm.com>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: <stable@vger.kernel.org> #4.6+
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reported-by: Vladimir Murzin <vladimir.murzin@arm.com>
Tested-by: Vladimir Murzin <vladimir.murzin@arm.com>
Fixes: 57f4959bad0a154a ("arm64: kernel: Add support for User Access Override")
Signed-off-by: Will Deacon <will.deacon@arm.com>
Paolo Bonzini [Tue, 14 Jun 2016 09:00:16 +0000 (11:00 +0200)]
Merge branch 'kvm-mips-fixes' into HEAD
Merge MIPS patches destined to both 4.7 and kvm/next, to avoid
unnecessary conflicts.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
James Hogan [Thu, 9 Jun 2016 09:50:46 +0000 (10:50 +0100)]
MIPS: KVM: Fix CACHE triggered exception emulation
When emulating TLB miss / invalid exceptions during CACHE instruction
emulation, be sure to set up the correct PC and host_cp0_badvaddr state
for the kvm_mips_emlulate_tlb*_ld() function to pick up for guest EPC
and BadVAddr.
PC needs to be rewound otherwise the guest EPC will end up pointing at
the next instruction after the faulting CACHE instruction.
host_cp0_badvaddr must be set because guest CACHE instructions trap with
a Coprocessor Unusable exception, which doesn't update the host BadVAddr
as a TLB exception would.
This doesn't tend to get hit when dynamic translation of emulated
instructions is enabled, since only the first execution of each CACHE
instruction actually goes through this code path, with subsequent
executions hitting the SYNCI instruction that it gets replaced with.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
James Hogan [Thu, 9 Jun 2016 09:50:45 +0000 (10:50 +0100)]
MIPS: KVM: Don't unwind PC when emulating CACHE
When a CACHE instruction is emulated by kvm_mips_emulate_cache(), the PC
is first updated to point to the next instruction, and afterwards it
falls through the "dont_update_pc" label, which rewinds the PC back to
its original address.
This works when dynamic translation of emulated instructions is enabled,
since the CACHE instruction is replaced with a SYNCI which works without
trapping, however when dynamic translation is disabled the guest hangs
on CACHE instructions as they always trap and are never stepped over.
Roughly swap the meanings of the "done" and "dont_update_pc" to match
kvm_mips_emulate_CP0(), so that "done" will roll back the PC on failure,
and "dont_update_pc" won't change PC at all (for the sake of exceptions
that have already modified the PC).
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
James Hogan [Thu, 9 Jun 2016 09:50:44 +0000 (10:50 +0100)]
MIPS: KVM: Include bit 31 in segment matches
When faulting guest addresses are matched against guest segments with
the KVM_GUEST_KSEGX() macro, change the mask to 0xe0000000 so as to
include bit 31.
This is mainly for safety's sake, as it prevents a rogue BadVAddr in the
host kseg2/kseg3 segments (e.g. 0xC*******) after a TLB exception from
matching the guest kseg0 segment (e.g. 0x4*******), triggering an
internal KVM error instead of allowing the corresponding guest kseg0
page to be mapped into the host vmalloc space.
Such a rogue BadVAddr was observed to happen with the host MIPS kernel
running under QEMU with KVM built as a module, due to a not entirely
transparent optimisation in the QEMU TLB handling. This has already been
worked around properly in a previous commit.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
James Hogan [Thu, 9 Jun 2016 09:50:43 +0000 (10:50 +0100)]
MIPS: KVM: Fix modular KVM under QEMU
Copy __kvm_mips_vcpu_run() into unmapped memory, so that we can never
get a TLB refill exception in it when KVM is built as a module.
This was observed to happen with the host MIPS kernel running under
QEMU, due to a not entirely transparent optimisation in the QEMU TLB
handling where TLB entries replaced with TLBWR are copied to a separate
part of the TLB array. Code in those pages continue to be executable,
but those mappings persist only until the next ASID switch, even if they
are marked global.
An ASID switch happens in __kvm_mips_vcpu_run() at exception level after
switching to the guest exception base. Subsequent TLB mapped kernel
instructions just prior to switching to the guest trigger a TLB refill
exception, which enters the guest exception handlers without updating
EPC. This appears as a guest triggered TLB refill on a host kernel
mapped (host KSeg2) address, which is not handled correctly as user
(guest) mode accesses to kernel (host) segments always generate address
error exceptions.
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: kvm@vger.kernel.org
Cc: linux-mips@linux-mips.org
Cc: <stable@vger.kernel.org> # 3.10.x-
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Boris Brezillon [Tue, 17 May 2016 09:12:32 +0000 (11:12 +0200)]
pwm: atmel-hlcdc: Fix default PWM polarity
The PWM device exposed by the HLCDC IP is configured with an inverted
polarity by default. Registering the PWM chip with the normal polarity
was not a problem before commit
42e8992c58d4 ("pwm: Add core
infrastructure to allow atomic updates") because the ->set_polarity()
hook was called no matter the current polarity state, but this is no longer
the case.
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Richard Weinberger [Sun, 12 Jun 2016 22:49:04 +0000 (00:49 +0200)]
ubi: Don't bypass ->getattr()
Directly accessing inode fields bypasses ->getattr()
and can cause problems when the underlying filesystem
does not have the default ->getattr() implementation.
So instead of obtaining the backing inode via d_backing_inode()
use vfs_getattr() and obtain what we need from the kstat struct.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Richard Weinberger [Sun, 12 Jun 2016 22:49:03 +0000 (00:49 +0200)]
Revert "mtd: switch open_mtd_by_chdev() to use of vfs_stat()"
This reverts commit
87f15d4add758fb7fc76655721af94be57a4c17d.
vfs_stat() can only be used on user supplied buffers.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Richard Weinberger [Sun, 12 Jun 2016 21:37:53 +0000 (23:37 +0200)]
Revert "mtd: switch ubi_open_volume_path() to vfs_stat()"
This reverts commit
322ea0bbf3003df17b6253f76e572c37d79a6810.
vfs_stat() can only be used on user supplied buffers.
UBI's kapi.c is the API to the kernel and therefore vfs_stat()
is inappropriate.
This solves the problem that mounting any UBIFS will immediately
fail with -EINVAL.
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Richard Weinberger <richard@nod.at>
Linus Torvalds [Tue, 14 Jun 2016 05:54:46 +0000 (19:54 -1000)]
Merge branch 'for-4.7-fixes' of git://git./linux/kernel/git/tj/percpu
Pull percpu fixes from Tejun Heo:
"While adding GFP_ATOMIC support to the percpu allocator, the
synchronization for the fast-path which doesn't require external
allocations was separated into pcpu_lock.
Unfortunately, it incorrectly decoupled async paths and percpu
chunks could get destroyed while still being operated on. This
contains two patches to fix the bug"
* 'for-4.7-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu: fix synchronization between synchronous map extension and chunk destruction
percpu: fix synchronization between chunk->map_extend_work and chunk destruction
Linus Torvalds [Tue, 14 Jun 2016 05:52:31 +0000 (19:52 -1000)]
Merge tag 'regulator-fix-v4.7-rc2' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"Some driver specific fixes for the regulator subsystem:
- Some of the changes to the core that were merged in the last merge
window exposed the fact that the qcom-smd driver hadn't implemented
the voltage enumeration interfaces like it should. Since it's a
simple driver specific fix to implement them do that.
- Fix the ramp delay configuration for tps51632"
* tag 'regulator-fix-v4.7-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: qcom_smd: add list_voltage callback
regulator: qcom_smd: add regulator ops for pm8941 lnldo
regulator: qcom_smd: add list_voltage callback
regulator: tps51632: Fix setting ramp delay
Alex Deucher [Mon, 13 Jun 2016 22:59:17 +0000 (18:59 -0400)]
Revert "drm/amdgpu: add pipeline sync while vmid switch in same ctx"
This reverts commit
2ba272d7bde27e1db2cf1c6cee49b01b7ea08989.
The issue fixed by this patch is specific to compute rings and the
previous patch was enough. Additionally, this patch as been traced
to strange behavior on some CZ systems so we might as well drop it.
Alex Deucher [Mon, 13 Jun 2016 22:26:24 +0000 (18:26 -0400)]
drm/amdgpu/gfx7: fix broken condition check
Wrong operator.
Reported-by: David Binderman <linuxdev.baldrick@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Alex Deucher [Mon, 13 Jun 2016 19:37:34 +0000 (15:37 -0400)]
drm/radeon: fix asic initialization for virtualized environments
When executing in a PCI passthrough based virtuzliation environment, the
hypervisor will usually attempt to send a PCIe bus reset signal to the
ASIC when the VM reboots. In this scenario, the card is not correctly
initialized, but we still consider it to be posted. Therefore, in a
passthrough based environemnt we should always post the card to guarantee
it is in a good state for driver initialization.
Ported from amdgpu commit:
amdgpu: fix asic initialization for virtualized environments
Cc: Andres Rodriguez <andres.rodriguez@amd.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Andres Rodriguez [Sat, 11 Jun 2016 06:51:32 +0000 (02:51 -0400)]
amdgpu: fix asic initialization for virtualized environments (v2)
When executing in a PCI passthrough based virtuzliation environemnt, the
hypervisor will usually attempt to send a PCIe bus reset signal to the
ASIC when the VM reboots. In this scenario, the card is not correctly
initialized, but we still consider it to be posted. Therefore, in a
passthrough based environemnt we should always post the card to guarantee
it is in a good state for driver initialization.
However, if we are operating in SR-IOV mode it is up to the GIM driver
to manage the asic state, therefore we should not post the card (and
shouldn't be able to do it either).
v2: add missing semi-colon
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Andres Rodriguez <andres.rodriguez@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Christian König [Mon, 13 Jun 2016 14:09:53 +0000 (16:09 +0200)]
drm/radeon: don't use fractional dividers on RS[78]80 if SS is enabled
Seems to cause problems for some older hardware. Kudos to Thom Kouwenhoven
for working a lot with the PLLs and figuring this out.
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Jérôme Glisse [Tue, 7 Jun 2016 21:43:04 +0000 (17:43 -0400)]
drm/radeon: do not hard reset GPU while freezing on r600/r700 family
Seems r600/r700 does not like hard reset while freezing for hibernation
(regression due to
274ad65c9d02bdcbee9bae045517864c3521d530 which itself
is a fix for hibernation on some GPU families). Until i can debug further
issue with r600, let just disable this for r600/r700 as they are very
similar family and bug affecting one likely affect the other.
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Jérôme Glisse <jglisse@redhat.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Mark Brown [Mon, 13 Jun 2016 15:51:57 +0000 (16:51 +0100)]
Merge remote-tracking branches 'regulator/fix/qcom-smd' and 'regulator/fix/tps51632' into regulator-linus
Junichi Nomura [Fri, 10 Jun 2016 04:31:52 +0000 (04:31 +0000)]
ipmi: Remove smi_msg from waiting_rcv_msgs list before handle_one_recv_msg()
Commit
7ea0ed2b5be8 ("ipmi: Make the message handler easier to use for
SMI interfaces") changed handle_new_recv_msgs() to call handle_one_recv_msg()
for a smi_msg while the smi_msg is still connected to waiting_rcv_msgs list.
That could lead to following list corruption problems:
1) low-level function treats smi_msg as not connected to list
handle_one_recv_msg() could end up calling smi_send(), which
assumes the msg is not connected to list.
For example, the following sequence could corrupt list by
doing list_add_tail() for the entry still connected to other list.
handle_new_recv_msgs()
msg = list_entry(waiting_rcv_msgs)
handle_one_recv_msg(msg)
handle_ipmb_get_msg_cmd(msg)
smi_send(msg)
spin_lock(xmit_msgs_lock)
list_add_tail(msg)
spin_unlock(xmit_msgs_lock)
2) race between multiple handle_new_recv_msgs() instances
handle_new_recv_msgs() once releases waiting_rcv_msgs_lock before calling
handle_one_recv_msg() then retakes the lock and list_del() it.
If others call handle_new_recv_msgs() during the window shown below
list_del() will be done twice for the same smi_msg.
handle_new_recv_msgs()
spin_lock(waiting_rcv_msgs_lock)
msg = list_entry(waiting_rcv_msgs)
spin_unlock(waiting_rcv_msgs_lock)
|
| handle_one_recv_msg(msg)
|
spin_lock(waiting_rcv_msgs_lock)
list_del(msg)
spin_unlock(waiting_rcv_msgs_lock)
Fixes: 7ea0ed2b5be8 ("ipmi: Make the message handler easier to use for SMI interfaces")
Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com>
[Added a comment to describe why this works.]
Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: stable@vger.kernel.org # 3.19
Tested-by: Ye Feng <yefeng.yl@alibaba-inc.com>
Paolo Bonzini [Mon, 13 Jun 2016 11:44:50 +0000 (13:44 +0200)]
Merge tag 'kvm-s390-master-4.7-1' of git://git./linux/kernel/git/kvms390/linux into HEAD
KVM: s390: fixup and missing stat
1. A fixup for a bug that was introduced in 4.7-rc1 if userspace uses
the cpu model ioctls
2. Add the missing kvm stat for pei events
Jean-Philippe Brucker [Fri, 3 Jun 2016 10:50:30 +0000 (11:50 +0100)]
iommu/arm-smmu: Wire up map_sg for arm-smmu-v3
The map_sg callback is missing from arm_smmu_ops, but is required by
iommu.h. Similarly to most other IOMMU drivers, connect it to
default_iommu_map_sg.
Cc: <stable@vger.kernel.org>
Signed-off-by: Jean-Philippe Brucker <jean-philippe.brucker@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Srinivas Kandagatla [Thu, 2 Jun 2016 10:23:15 +0000 (11:23 +0100)]
regulator: qcom_smd: add list_voltage callback
This patch adds support to list_voltage callback, so that consumers
like mmc core, can get information of supported voltage range.
Without this patch there is no way for mmc core to know this voltage range.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Linus Torvalds [Sun, 12 Jun 2016 14:20:35 +0000 (07:20 -0700)]
Linux 4.7-rc3
Linus Torvalds [Sun, 12 Jun 2016 13:30:39 +0000 (06:30 -0700)]
Merge branch 'for-rc' of git://git./linux/kernel/git/rzhang/linux
Pull thermal management fixes from Zhang Rui:
- fix an ordering issue in cpu cooling that cooling device is
registered before it's ready (freq_table being populated).
(Lukasz Luba)
- fix a missing comment update (Caesar Wang)
* 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
thermal: add the note for set_trip_temp
thermal: cpu_cooling: fix improper order during initialization
Miklos Szeredi [Sun, 12 Jun 2016 10:05:21 +0000 (12:05 +0200)]
Merge branch 'overlayfs-af_unix-fix' into overlayfs-linus
Linus Torvalds [Sun, 12 Jun 2016 01:42:59 +0000 (18:42 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
"A small collection of fixes for the current series. This contains:
- Two fixes for xen-blkfront, from Bob Liu.
- A bug fix for NVMe, releasing only the specific resources we
requested.
- Fix for a debugfs flags entry for nbd, from Josef.
- Plug fix from Omar, fixing up a case of code being switched between
two functions.
- A missing bio_put() for the new discard callers of
submit_bio_wait(), fixing a regression causing a leak of the bio.
From Shaun.
- Improve dirty limit calculation precision in the writeback code,
fixing a case where setting a limit lower than 1% of memory would
end up being zero. From Tejun"
* 'for-linus' of git://git.kernel.dk/linux-block:
NVMe: Only release requested regions
xen-blkfront: fix resume issues after a migration
xen-blkfront: don't call talk_to_blkback when already connected to blkback
nbd: pass the nbd pointer for flags debugfs
block: missing bio_put following submit_bio_wait
blk-mq: really fix plug list flushing for nomerge queues
writeback: use higher precision calculation in domain_dirty_limits()
Linus Torvalds [Sun, 12 Jun 2016 01:03:39 +0000 (18:03 -0700)]
Merge tag 'gpio-v4.7-3' of git://git./linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"A new bunch of GPIO fixes for v4.7.
This time I am very grateful that Ricardo Ribalda Delgado went in and
fixed my stupid refcounting mistakes in the removal path for GPIO
chips. I had a feeling something was wrong here and so it was. It
exploded on OMAP and it fixes their problem. Now it should be (more)
solid.
The rest i compilation, Kconfig and driver fixes. Some tagged for
stable.
Summary:
- Fix a NULL pointer dereference when we are searching the GPIO
device list but one of the devices have been removed (struct
gpio_chip pointer is NULL).
- Fix unaligned reference counters: we were ending on +3 after all
said and done. It should be 0. Remove an extraneous get_device(),
and call cdev_del() followed by device_del() in gpiochip_remove()
instead and the count goes to zero and calls the release() function
properly.
- Fix a compile warning due to a missing #include in the OF/device
tree portions.
- Select ANON_INODES for GPIOLIB, we're using that for our character
device. Some randconfig tests disclosed the problem.
- Make sure the Zynq driver clock runs also without CONFIG_PM enabled
- Fix an off-by-one error in the 104-DIO-48E driver
- Fix warnings in bcm_kona_gpio_reset()"
* tag 'gpio-v4.7-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: bcm-kona: fix bcm_kona_gpio_reset() warnings
gpio: select ANON_INODES
gpio: include <linux/io-mapping.h> in gpiolib-of
gpiolib: Fix unaligned used of reference counters
gpiolib: Fix NULL pointer deference
gpio: zynq: initialize clock even without CONFIG_PM
gpio: 104-dio-48e: Fix control port offset computation off-by-one error
Linus Torvalds [Sat, 11 Jun 2016 18:42:08 +0000 (11:42 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Two current fixes:
- one affects Qemu CD ROM emulation, which stopped working after the
updates in SCSI to require VPD pages from all conformant devices.
Fix temporarily by blacklisting Qemu (we can relax later when they
come into compliance).
- The other is a fix to the optimal transfer size. We set up a
minefield for ourselves by being confused about whether the limits
are in bytes or sectors (SCSI optimal is in blocks and the queue
parameter is in bytes).
This tries to fix the problem (wrong setting for queue limits
max_sectors) and make the problem more obvious by introducing a
wrapper function"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
sd: Fix rw_max for devices that report an optimal xfer size
scsi: Add QEMU CD-ROM to VPD Inquiry Blacklist
Linus Torvalds [Sat, 11 Jun 2016 18:24:54 +0000 (11:24 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
- a bigger fix for i801 to finally be able to be loaded on some
machines again
- smaller driver fixes
- documentation update because of a renamed file
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: mux: reg: Provide of_match_table
i2c: mux: refer to i2c-mux.txt
i2c: octeon: Avoid printk after too long SMBUS message
i2c: octeon: Missing AAK flag in case of I2C_M_RECV_LEN
i2c: i801: Allow ACPI SystemIO OpRegion to conflict with PCI BAR
Linus Torvalds [Sat, 11 Jun 2016 18:08:57 +0000 (11:08 -0700)]
Merge tag 'devicetree-fixes-for-4.7' of git://git./linux/kernel/git/robh/linux
Pull DeviceTree fixes from Rob Herring:
- fix unflatten_dt_nodes when dad parameter is set.
- add vendor prefixes for TechNexion and UniWest
- documentation fix for Marvell BT
- OF IRQ kerneldoc fixes
- restrict CMA alignment adjustments to non dma-coherent
- a couple of warning fixes in reserved-memory code
- DT maintainers updates
* tag 'devicetree-fixes-for-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
drivers: of: add definition of early_init_dt_alloc_reserved_memory_arch
drivers/of: Fix depth for sub-tree blob in unflatten_dt_nodes()
drivers: of: Fix of_pci.h header guard
dt-bindings: Add vendor prefix for TechNexion
of: add vendor prefix for UniWest
dt: bindings: fix documentation for MARVELL's bt-sd8xxx wireless device
of: add missing const for of_parse_phandle_with_args() in !CONFIG_OF
of: silence warnings due to max() usage
drivers: of: of_reserved_mem: fixup the CMA alignment not to affect dma-coherent
of: irq: fix of_irq_get[_byname]() kernel-doc
MAINTAINERS: DeviceTree maintainer updates
Linus Torvalds [Sat, 11 Jun 2016 17:55:30 +0000 (10:55 -0700)]
Merge tag '20160610_uvc_compat_for_linus' of git://git./linux/kernel/git/luto/linux
Pull uvc compat XU ioctl fixes from Andy Lutomirski:
"uvc's compat XU ioctls go through tons of potentially buggy
indirection. The first patch removes the indirection. The second one
cleans up the code.
Compile-tested only. I have the hardware, but I have absolutely no
idea what XU does, how to use it, what software to recompile as
32-bit, or what to test in that software"
* tag '20160610_uvc_compat_for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/luto/linux:
uvc_v4l2: Simplify compat ioctl implementation
uvc: Forward compat ioctls to their handlers directly
Dave Airlie [Fri, 10 Jun 2016 23:34:20 +0000 (09:34 +1000)]
Merge tag 'drm-amdkfd-fixes-2016-06-03' of git://people.freedesktop.org/~gabbayo/linux into drm-fixes
* tag 'drm-amdkfd-fixes-2016-06-03' of git://people.freedesktop.org/~gabbayo/linux:
drm/amdkfd: print once about mem_banks truncation
drm/amdkfd: destroy dbgmgr in notifier release
drm/amdkfd: unbind only existing processes
Andy Lutomirski [Thu, 12 May 2016 00:41:27 +0000 (17:41 -0700)]
uvc_v4l2: Simplify compat ioctl implementation
The uvc compat ioctl implementation seems to have copied user data
for no good reason. Remove a bunch of copies.
Signed-off-by: Andy Lutomirski <luto@kernel.org>