Linus Torvalds [Sat, 27 Aug 2016 03:12:35 +0000 (20:12 -0700)]
Merge tag 'iommu-fixes-v4.8-rc3' of git://git./linux/kernel/git/joro/iommu
Pull IOMMU fixes from Joerg Roedel:
"Fixes from Will Deacon:
- fix a couple of thinkos in the CMDQ error handling and
short-descriptor page table code that have been there since day one
- disable stalling faults, since they may result in hardware deadlock
- fix an accidental BUG() when passing disable_bypass=1 on the
cmdline"
* tag 'iommu-fixes-v4.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/arm-smmu: Don't BUG() if we find aborting STEs with disable_bypass
iommu/arm-smmu: Disable stalling faults for all endpoints
iommu/arm-smmu: Fix CMDQ error handling
iommu/io-pgtable-arm-v7s: Fix attributes when splitting blocks
Linus Torvalds [Sat, 27 Aug 2016 01:50:07 +0000 (18:50 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"Here's a set of block fixes for the current 4.8-rc release. This
contains:
- a fix for a secure erase regression, from Adrian.
- a fix for an mmc use-after-free bug regression, also from Adrian.
- potential zero pointer deference in bdev freezing, from Andrey.
- a race fix for blk_set_queue_dying() from Bart.
- a set of xen blkfront fixes from Bob Liu.
- three small fixes for bcache, from Eric and Kent.
- a fix for a potential invalid NVMe state transition, from Gabriel.
- blk-mq CPU offline fix, preventing us from issuing and completing a
request on the wrong queue. From me.
- revert two previous floppy changes, since they caused a user
visibile regression. A better fix is in the works.
- ensure that we don't send down bios that have more than 256
elements in them. Fixes a crash with bcache, for example. From
Ming.
- a fix for deferencing an error pointer with cgroup writeback.
Fixes a regression. From Vegard"
* 'for-linus' of git://git.kernel.dk/linux-block:
mmc: fix use-after-free of struct request
Revert "floppy: refactor open() flags handling"
Revert "floppy: fix open(O_ACCMODE) for ioctl-only open"
fs/block_dev: fix potential NULL ptr deref in freeze_bdev()
blk-mq: improve warning for running a queue on the wrong CPU
blk-mq: don't overwrite rq->mq_ctx
block: make sure a big bio is split into at most 256 bvecs
nvme: Fix nvme_get/set_features() with a NULL result pointer
bdev: fix NULL pointer dereference
xen-blkfront: free resources if xlvbd_alloc_gendisk fails
xen-blkfront: introduce blkif_set_queue_limits()
xen-blkfront: fix places not updated after introducing 64KB page granularity
bcache: pr_err: more meaningful error message when nr_stripes is invalid
bcache: RESERVE_PRIO is too small by one when prio_buckets() is a power of two.
bcache: register_bcache(): call blkdev_put() when cache_alloc() fails
block: Fix race triggered by blk_set_queue_dying()
block: Fix secure erase
nvme: Prevent controller state invalid transition
Linus Torvalds [Sat, 27 Aug 2016 01:36:23 +0000 (18:36 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull input subsystem fixes from Dmitry Torokhov:
"Simply small driver fixups"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: ads7846 - remove redundant regulator_disable call
Input: synaptics-rmi4 - fix register descriptor subpacket map construction
Input: tegra-kbc - fix inverted reset logic
Input: silead - use devm_gpiod_get
Input: i8042 - set up shared ps2_cmd_mutex for AUX ports
Linus Torvalds [Sat, 27 Aug 2016 01:26:07 +0000 (18:26 -0700)]
Merge tag 'pci-v4.8-fixes-1' of git://git./linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"Resource management:
- Update "pci=resource_alignment" documentation (Mathias Koehrer)
MSI:
- Use positive flags in pci_alloc_irq_vectors() (Christoph Hellwig)
- Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors() (Christoph Hellwig)
Intel VMD host bridge driver:
- Fix infinite loop executing irq's (Keith Busch)"
* tag 'pci-v4.8-fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
x86/PCI: VMD: Fix infinite loop executing irq's
PCI: Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors()
PCI: Use positive flags in pci_alloc_irq_vectors()
PCI: Update "pci=resource_alignment" documentation
Adrian Hunter [Thu, 25 Aug 2016 20:11:43 +0000 (14:11 -0600)]
mmc: fix use-after-free of struct request
We call mmc_req_is_special() after having processed a request, but
it could be freed after that. Check that ahead of time, and use
the cached value.
Reported-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Fixes:
c2df40dfb8c0 ("drivers: use req op accessor")
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Thu, 25 Aug 2016 14:56:51 +0000 (08:56 -0600)]
Revert "floppy: refactor open() flags handling"
This reverts commit
09954bad448791ef01202351d437abdd9497a804.
Jens Axboe [Thu, 25 Aug 2016 14:56:44 +0000 (08:56 -0600)]
Revert "floppy: fix open(O_ACCMODE) for ioctl-only open"
This reverts commit
ff06db1efb2ad6db06eb5b99b88a0c15a9cc9b0e.
Andrey Ryabinin [Tue, 23 Aug 2016 15:55:31 +0000 (18:55 +0300)]
fs/block_dev: fix potential NULL ptr deref in freeze_bdev()
Calling freeze_bdev() twice on the same block device without mounted
filesystem get_super() will return NULL, which will lead to NULL-ptr
dereference later in drop_super().
Check get_super() result to fix that.
Note, that this is a purely theoretical issue. We have only 3
freeze_bdev() callers. 2 of them are in filesystem code and used on a
device with mounted fs. The third one in lock_fs() has protection in
upper-layer code against freezing block device the second time without
thawing it first.
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Thu, 25 Aug 2016 09:49:38 +0000 (05:49 -0400)]
Merge branch 'for-rc' of git://git./linux/kernel/git/rzhang/linux
Pull thermal fixes from Zhang Rui:
- Fix cpu_cooling to have separate thermal_cooling_device_ops
structures for cpus with and without power model, to avoid NULL
dereference in cpufreq_state2power. From Brendan Jackman.
- Fix a possible NULL dereference in imx_thermal driver. From Corentin
LABBE.
- Another two trivial fixes, one typo fix and one deleting module
owner. From Caesar Wang and Markus Elfring.
* 'for-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/rzhang/linux:
thermal: imx: fix a possible NULL dereference
thermal: trivial: fix the typo
Thermal-INT3406: Delete owner assignment
thermal: cpu_cooling: Fix NULL dereference in cpufreq_state2power
Jens Axboe [Wed, 24 Aug 2016 21:38:01 +0000 (15:38 -0600)]
blk-mq: improve warning for running a queue on the wrong CPU
__blk_mq_run_hw_queue() currently warns if we are running the queue on a
CPU that isn't set in its mask. However, this can happen if a CPU is
being offlined, and the workqueue handling will place the work on CPU0
instead. Improve the warning so that it only triggers if the batch cpu
in the hardware queue is currently online. If it triggers for that
case, then it's indicative of a flow problem in blk-mq, so we want to
retain it for that case.
Signed-off-by: Jens Axboe <axboe@fb.com>
Jens Axboe [Wed, 24 Aug 2016 21:34:35 +0000 (15:34 -0600)]
blk-mq: don't overwrite rq->mq_ctx
We do this in a few places, if the CPU is offline. This isn't allowed,
though, since on multi queue hardware, we can't just move a request
from one software queue to another, if they map to different hardware
queues. The request and tag isn't valid on another hardware queue.
This can happen if plugging races with CPU offlining. But it does
no harm, since it can only happen in the window where we are
currently busy freezing the queue and flushing IO, in preparation
for redoing the software <-> hardware queue mappings.
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Wed, 24 Aug 2016 20:04:59 +0000 (16:04 -0400)]
Merge branch 'for-linus-4.8-rc4' of git://git./linux/kernel/git/rw/uml
Pull UML fix from Richard Weinberger:
"This contains a fix for a build regression introduced during the merge
window"
* 'for-linus-4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rw/uml:
um: Don't discard .text.exit section
Linus Torvalds [Wed, 24 Aug 2016 19:54:41 +0000 (15:54 -0400)]
Merge tag 'upstream-4.8-rc4' of git://git.infradead.org/linux-ubifs
Pull UBIFS fixes from Richard Weinberger:
"This pull requests contains fixes for two issues in UBI and UBIFS:
- wrong UBIFS assertion.
- a UBIFS xattr regression"
* tag 'upstream-4.8-rc4' of git://git.infradead.org/linux-ubifs:
ubifs: Fix xattr generic handler usage
ubifs: Fix assertion in layout_in_gaps()
Linus Torvalds [Wed, 24 Aug 2016 18:04:30 +0000 (14:04 -0400)]
Merge tag 'for-linus-4.8b-rc3-tag' of git://git./linux/kernel/git/xen/tip
Pull xen regression fix from David Vrabel:
"Fix a regression in the xenbus device preventing userspace tools from
working"
* tag 'for-linus-4.8b-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen: change the type of xen_vcpu_id to uint32_t
xenbus: don't look up transaction IDs for ordinary writes
Vitaly Kuznetsov [Fri, 29 Jul 2016 09:06:48 +0000 (11:06 +0200)]
xen: change the type of xen_vcpu_id to uint32_t
We pass xen_vcpu_id mapping information to hypercalls which require
uint32_t type so it would be cleaner to have it as uint32_t. The
initializer to -1 can be dropped as we always do the mapping before using
it and we never check the 'not set' value anyway.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Jan Beulich [Mon, 15 Aug 2016 15:02:38 +0000 (09:02 -0600)]
xenbus: don't look up transaction IDs for ordinary writes
This should really only be done for XS_TRANSACTION_END messages, or
else at least some of the xenstore-* tools don't work anymore.
Fixes:
0beef634b8 ("xenbus: don't BUG() on user mode induced condition")
Reported-by: Richard Schütz <rschuetz@uni-koblenz.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Tested-by: Richard Schütz <rschuetz@uni-koblenz.de>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
Ming Lei [Tue, 23 Aug 2016 13:49:45 +0000 (21:49 +0800)]
block: make sure a big bio is split into at most 256 bvecs
After arbitrary bio size was introduced, the incoming bio may
be very big. We have to split the bio into small bios so that
each holds at most BIO_MAX_PAGES bvecs for safety reason, such
as bio_clone().
This patch fixes the following kernel crash:
> [ 172.660142] BUG: unable to handle kernel NULL pointer dereference at
0000000000000028
> [ 172.660229] IP: [<
ffffffff811e53b4>] bio_trim+0xf/0x2a
> [ 172.660289] PGD
7faf3e067 PUD
7f9279067 PMD 0
> [ 172.660399] Oops: 0000 [#1] SMP
> [...]
> [ 172.664780] Call Trace:
> [ 172.664813] [<
ffffffffa007f3be>] ? raid1_make_request+0x2e8/0xad7 [raid1]
> [ 172.664846] [<
ffffffff811f07da>] ? blk_queue_split+0x377/0x3d4
> [ 172.664880] [<
ffffffffa005fb5f>] ? md_make_request+0xf6/0x1e9 [md_mod]
> [ 172.664912] [<
ffffffff811eb860>] ? generic_make_request+0xb5/0x155
> [ 172.664947] [<
ffffffffa0445c89>] ? prio_io+0x85/0x95 [bcache]
> [ 172.664981] [<
ffffffffa0448252>] ? register_cache_set+0x355/0x8d0 [bcache]
> [ 172.665016] [<
ffffffffa04497d3>] ? register_bcache+0x1006/0x1174 [bcache]
The issue can be reproduced by the following steps:
- create one raid1 over two virtio-blk
- build bcache device over the above raid1 and another cache device
and bucket size is set as 2Mbytes
- set cache mode as writeback
- run random write over ext4 on the bcache device
Fixes:
54efd50(block: make generic_make_request handle arbitrarily sized bios)
Reported-by: Sebastian Roesner <sroesner-kernelorg@roesner-online.de>
Reported-by: Eric Wheeler <bcache@lists.ewheeler.net>
Cc: stable@vger.kernel.org (4.3+)
Cc: Shaohua Li <shli@fb.com>
Acked-by: Kent Overstreet <kent.overstreet@gmail.com>
Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Andy Lutomirski [Wed, 24 Aug 2016 10:52:12 +0000 (03:52 -0700)]
nvme: Fix nvme_get/set_features() with a NULL result pointer
nvme_set_features() callers seem to expect that passing NULL as the
result pointer is acceptable. Teach nvme_set_features() not to try to
write to the NULL address.
For symmetry, make the same change to nvme_get_features(), despite the
fact that all current callers pass a valid result pointer.
I assume that this bug hasn't been reported in practice because
the callers that pass NULL are all in the SCSI translation layer
and no one uses the relevant operations.
Cc: stable@vger.kernel.org
Signed-off-by: Andy Lutomirski <luto@kernel.org>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Jens Axboe <axboe@fb.com>
Linus Torvalds [Wed, 24 Aug 2016 11:43:27 +0000 (07:43 -0400)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull vhost bugfix from Michael Tsirkin:
"This includes a single bugfix for vhost-scsi"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vhost/scsi: fix reuse of &vq->iov[out] in response
Linus Torvalds [Wed, 24 Aug 2016 00:24:27 +0000 (20:24 -0400)]
Merge tag 'for-f2fs-v4.8-rc4' of git://git./linux/kernel/git/jaegeuk/f2fs
Pull f2fs fixes from Jaegeuk Kim:
- fsmark regression
- i_size race condition
- wrong conditions in f2fs_move_file_range
* tag 'for-f2fs-v4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
f2fs: avoid potential deadlock in f2fs_move_file_range
f2fs: allow copying file range only in between regular files
Revert "f2fs: move i_size_write in f2fs_write_end"
Revert "f2fs: use percpu_rw_semaphore"
Keith Busch [Tue, 23 Aug 2016 21:36:42 +0000 (16:36 -0500)]
x86/PCI: VMD: Fix infinite loop executing irq's
We can't initialize the list head on deletion as this causes the node to
point to itself, which causes an infinite loop if vmd_irq() happens to be
servicing that node.
The list initialization was trying to fix a bug from multiple calls to
disable the same IRQ. Fix this instead by having the VMD driver track if
the interrupt is enabled.
[bhelgaas: changelog, add "Fixes"]
Fixes:
97e923063575 ("x86/PCI: VMD: Initialize list item in IRQ disable")
Reported-by: Grzegorz Koczot <grzegorz.koczot@intel.com>
Tested-by: Miroslaw Drost <miroslaw.drost@intel.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by Jon Derrick: <jonathan.derrick@intel.com>
Andrey Ryabinin [Wed, 17 Aug 2016 15:10:11 +0000 (18:10 +0300)]
um: Don't discard .text.exit section
Commit
e41f501d3912 ("vmlinux.lds: account for destructor sections")
added '.text.exit' to EXIT_TEXT which is discarded at link time by default.
This breaks compilation of UML:
`.text.exit' referenced in section `.fini_array' of
/usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libc.a(sdlerror.o):
defined in discarded section `.text.exit' of
/usr/lib/gcc/x86_64-linux-gnu/6/../../../x86_64-linux-gnu/libc.a(sdlerror.o)
Apparently UML doesn't want to discard exit text, so let's place all EXIT_TEXT
sections in .exit.text.
Fixes:
e41f501d3912 ("vmlinux.lds: account for destructor sections")
Reported-by: Stefan Traby <stefan@hello-penguin.com>
Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: <stable@vger.kernel.org>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Richard Weinberger [Sun, 31 Jul 2016 19:42:23 +0000 (21:42 +0200)]
ubifs: Fix xattr generic handler usage
UBIFS uses full names to work with xattrs, therefore we have to use
xattr_full_name() to obtain the xattr prefix as string.
Cc: <stable@vger.kernel.org>
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Fixes:
2b88fc21ca ("ubifs: Switch to generic xattr handlers")
Signed-off-by: Richard Weinberger <richard@nod.at>
Reviewed-by: Andreas Gruenbacher <agruenba@redhat.com>
Tested-by: Dongsheng Yang <dongsheng081251@gmail.com>
Vincent Stehlé [Fri, 12 Aug 2016 13:26:30 +0000 (15:26 +0200)]
ubifs: Fix assertion in layout_in_gaps()
An assertion in layout_in_gaps() verifies that the gap_lebs pointer is
below the maximum bound. When computing this maximum bound the idx_lebs
count is multiplied by sizeof(int), while C pointers arithmetic does take
into account the size of the pointed elements implicitly already. Remove
the multiplication to fix the assertion.
Fixes:
1e51764a3c2ac05a ("UBIFS: add new flash file system")
Cc: <stable@vger.kernel.org>
Signed-off-by: Vincent Stehlé <vincent.stehle@intel.com>
Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
Linus Torvalds [Tue, 23 Aug 2016 18:32:38 +0000 (14:32 -0400)]
Merge tag 'usercopy-v4.8-rc4' of git://git./linux/kernel/git/kees/linux
Pull hardened usercopy fixes from Kees Cook:
- avoid signed math problems on unexpected compilers
- avoid false positives at very end of kernel text range checks
* tag 'usercopy-v4.8-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
usercopy: fix overlap check for kernel text
usercopy: avoid potentially undefined behavior in pointer math
Linus Torvalds [Tue, 23 Aug 2016 18:29:00 +0000 (14:29 -0400)]
Merge branch 'linus' of git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"This fixes a number of memory corruption bugs in the newly added
sha256-mb/sha256-mb code"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: sha512-mb - fix ctx pointer
crypto: sha256-mb - fix ctx pointer and digest copy
Benjamin Coddington [Mon, 6 Jun 2016 22:07:59 +0000 (18:07 -0400)]
vhost/scsi: fix reuse of &vq->iov[out] in response
The address of the iovec &vq->iov[out] is not guaranteed to contain the scsi
command's response iovec throughout the lifetime of the command. Rather, it
is more likely to contain an iovec from an immediately following command
after looping back around to vhost_get_vq_desc(). Pass along the iovec
entirely instead.
Fixes:
79c14141a487 ("vhost/scsi: Convert completion path to use copy_to_iter")
Cc: stable@vger.kernel.org
Signed-off-by: Benjamin Coddington <bcodding@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Josh Poimboeuf [Mon, 22 Aug 2016 16:53:59 +0000 (11:53 -0500)]
usercopy: fix overlap check for kernel text
When running with a local patch which moves the '_stext' symbol to the
very beginning of the kernel text area, I got the following panic with
CONFIG_HARDENED_USERCOPY:
usercopy: kernel memory exposure attempt detected from
ffff88103dfff000 (<linear kernel text>) (4096 bytes)
------------[ cut here ]------------
kernel BUG at mm/usercopy.c:79!
invalid opcode: 0000 [#1] SMP
...
CPU: 0 PID: 4800 Comm: cp Not tainted 4.8.0-rc3.after+ #1
Hardware name: Dell Inc. PowerEdge R720/0X3D66, BIOS 2.5.4 01/22/2016
task:
ffff880817444140 task.stack:
ffff880816274000
RIP: 0010:[<
ffffffff8121c796>] __check_object_size+0x76/0x413
RSP: 0018:
ffff880816277c40 EFLAGS:
00010246
RAX:
000000000000006b RBX:
ffff88103dfff000 RCX:
0000000000000000
RDX:
0000000000000000 RSI:
ffff88081f80dfa8 RDI:
ffff88081f80dfa8
RBP:
ffff880816277c90 R08:
000000000000054c R09:
0000000000000000
R10:
0000000000000005 R11:
0000000000000006 R12:
0000000000001000
R13:
ffff88103e000000 R14:
ffff88103dffffff R15:
0000000000000001
FS:
00007fb9d1750800(0000) GS:
ffff88081f800000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
00000000021d2000 CR3:
000000081a08f000 CR4:
00000000001406f0
Stack:
ffff880816277cc8 0000000000010000 000000043de07000 0000000000000000
0000000000001000 ffff880816277e60 0000000000001000 ffff880816277e28
000000000000c000 0000000000001000 ffff880816277ce8 ffffffff8136c3a6
Call Trace:
[<
ffffffff8136c3a6>] copy_page_to_iter_iovec+0xa6/0x1c0
[<
ffffffff8136e766>] copy_page_to_iter+0x16/0x90
[<
ffffffff811970e3>] generic_file_read_iter+0x3e3/0x7c0
[<
ffffffffa06a738d>] ? xfs_file_buffered_aio_write+0xad/0x260 [xfs]
[<
ffffffff816e6262>] ? down_read+0x12/0x40
[<
ffffffffa06a61b1>] xfs_file_buffered_aio_read+0x51/0xc0 [xfs]
[<
ffffffffa06a6692>] xfs_file_read_iter+0x62/0xb0 [xfs]
[<
ffffffff812224cf>] __vfs_read+0xdf/0x130
[<
ffffffff81222c9e>] vfs_read+0x8e/0x140
[<
ffffffff81224195>] SyS_read+0x55/0xc0
[<
ffffffff81003a47>] do_syscall_64+0x67/0x160
[<
ffffffff816e8421>] entry_SYSCALL64_slow_path+0x25/0x25
RIP: 0033:[<
00007fb9d0c33c00>] 0x7fb9d0c33c00
RSP: 002b:
00007ffc9c262f28 EFLAGS:
00000246 ORIG_RAX:
0000000000000000
RAX:
ffffffffffffffda RBX:
fffffffffff8ffff RCX:
00007fb9d0c33c00
RDX:
0000000000010000 RSI:
00000000021c3000 RDI:
0000000000000004
RBP:
00000000021c3000 R08:
0000000000000000 R09:
00007ffc9c264d6c
R10:
00007ffc9c262c50 R11:
0000000000000246 R12:
0000000000010000
R13:
00007ffc9c2630b0 R14:
0000000000000004 R15:
0000000000010000
Code: 81 48 0f 44 d0 48 c7 c6 90 4d a3 81 48 c7 c0 bb b3 a2 81 48 0f 44 f0 4d 89 e1 48 89 d9 48 c7 c7 68 16 a3 81 31 c0 e8 f4 57 f7 ff <0f> 0b 48 8d 90 00 40 00 00 48 39 d3 0f 83 22 01 00 00 48 39 c3
RIP [<
ffffffff8121c796>] __check_object_size+0x76/0x413
RSP <
ffff880816277c40>
The checked object's range [
ffff88103dfff000,
ffff88103e000000) is
valid, so there shouldn't have been a BUG. The hardened usercopy code
got confused because the range's ending address is the same as the
kernel's text starting address at 0xffff88103e000000. The overlap check
is slightly off.
Fixes:
f5509cc18daa ("mm: Hardened usercopy")
Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Eric Biggers [Fri, 19 Aug 2016 19:15:22 +0000 (12:15 -0700)]
usercopy: avoid potentially undefined behavior in pointer math
check_bogus_address() checked for pointer overflow using this expression,
where 'ptr' has type 'const void *':
ptr + n < ptr
Since pointer wraparound is undefined behavior, gcc at -O2 by default
treats it like the following, which would not behave as intended:
(long)n < 0
Fortunately, this doesn't currently happen for kernel code because kernel
code is compiled with -fno-strict-overflow. But the expression should be
fixed anyway to use well-defined integer arithmetic, since it could be
treated differently by different compilers in the future or could be
reported by tools checking for undefined behavior.
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Linus Torvalds [Mon, 22 Aug 2016 22:53:02 +0000 (17:53 -0500)]
Merge tag 'arc-4.8-rc4-fixes' of git://git./linux/kernel/git/vgupta/arc
Pull ARC fixes from Vineet Gupta:
- support for Syscall ABI v4 with upstream gcc 6.x
- lockdep fix (Daniel Mentz)
- gdb register clobber (Liav Rehana)
- couple of missing exports for modules
- other fixes here and there
* tag 'arc-4.8-rc4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vgupta/arc:
ARC: export __udivdi3 for modules
ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS
ARC: export kmap
ARC: Support syscall ABI v4
ARC: use correct offset in pt_regs for saving/restoring user mode r25
ARC: Elide redundant setup of DMA callbacks
ARC: Call trace_hardirqs_on() before enabling irqs
Linus Torvalds [Mon, 22 Aug 2016 22:51:21 +0000 (17:51 -0500)]
Merge tag 'gpio-v4.8-2' of git://git./linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Here are a few GPIO fixes for v4.8.
I was expecting some fallout from the new chardev rework but nothing
like that turned up att all. Instead a Kconfig confusion that I think
I have finally nailed, then some ordinary driver noise and trivia.
This fixes a Kconfig issue with UM: when I made GPIOLIB available to
all archs, that included UM, but the OF part of GPIOLIB requires
HAS_IOMEM, so we add HAS_IOMEM as a dependency to OF_GPIO.
This in turn exposed the fact that a few GPIO drivers were implicitly
assuming OF_GPIO as their dependency but instead depended on OF alone
(the typical problem being a pointer inside gpio_chip not existing
unless OF_GPIO is selected) and then UM would fail to compile with
these drivers instead. Then I lost patience and made any GPIO driver
depending on just OF depend on OF_GPIO instead, that is certainly what
they meant and the only thing that makes sense anyway. GPIO with just
OF but !OF_GPIO does not make sense.
Also a fix for the max730x driver data pointer, and a minor comment
fix for the GPIO tools"
* tag 'gpio-v4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio: make any OF dependent driver depend on OF_GPIO
gpio: Fix OF build problem on UM
gpio: max730x: set gpiochip data pointer before using it
tools/gpio: fix gpio-event-mon header comment
Petr Cvek [Fri, 19 Aug 2016 17:14:29 +0000 (10:14 -0700)]
Input: ads7846 - remove redundant regulator_disable call
ADS7846 regulator is disabled twice in a row in ads7846_remove(). Valid
one is in ads7846_disable().
Removing the ads7846 module causes warning about unbalanced disables.
...
WARNING: CPU: 0 PID: 29269 at drivers/regulator/core.c:2251 _regulator_disable+0xf8/0x130
unbalanced disables for vads7846
CPU: 0 PID: 29269 Comm: rmmod Tainted: G D W 4.7.0+ #3
Hardware name: HTC Magician
...
show_stack+0x10/0x14
__warn+0xd8/0x100
warn_slowpath_fmt+0x38/0x48
_regulator_disable+0xf8/0x130
regulator_disable+0x34/0x60
ads7846_remove+0x58/0xd4 [ads7846]
spi_drv_remove+0x1c/0x34
__device_release_driver+0x84/0x114
driver_detach+0x8c/0x90
bus_remove_driver+0x5c/0xc8
SyS_delete_module+0x1a0/0x238
ret_fast_syscall+0x0/0x38
Signed-off-by: Petr Cvek <petr.cvek@tul.cz>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Andrew Duggan [Mon, 22 Aug 2016 18:28:11 +0000 (11:28 -0700)]
Input: synaptics-rmi4 - fix register descriptor subpacket map construction
The map_offset variable is specific to the register and needs to be reset
in the loop. Otherwise, subsequent register's subpacket maps will have
their bits set at the wrong index.
Signed-off-by: Andrew Duggan <aduggan@synaptics.com>
Tested-by: Nitin Chaudhary <nitinchaudhary1289@gmail.com>
Reviewed-by: Benjamin Tissoires <benjamin.tissoires@redhat.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Masahiro Yamada [Mon, 22 Aug 2016 20:25:56 +0000 (13:25 -0700)]
Input: tegra-kbc - fix inverted reset logic
Commit
fe6b0dfaba68 ("Input: tegra-kbc - use reset framework")
accidentally converted _deassert to _assert, so there is no code
to wake up this hardware.
Fixes:
fe6b0dfaba68 ("Input: tegra-kbc - use reset framework")
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Acked-by: Laxman Dewangan <ldewangan@nvidia.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Hans de Goede [Mon, 22 Aug 2016 20:49:59 +0000 (13:49 -0700)]
Input: silead - use devm_gpiod_get
The silead code is using devm_foo for everything (and does not free
any resources). Except that it is using gpiod_get instead of
devm_gpiod_get (but is not freeing the gpio_desc), change this
to use devm_gpiod_get so that the gpio will be properly released.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Vegard Nossum [Mon, 22 Aug 2016 10:47:43 +0000 (12:47 +0200)]
bdev: fix NULL pointer dereference
I got this:
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Dumping ftrace buffer:
(ftrace buffer empty)
CPU: 0 PID: 5505 Comm: syz-executor Not tainted 4.8.0-rc2+ #161
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS
rel-1.9.3-0-ge2fc41e-prebuilt.qemu-project.org 04/01/2014
task:
ffff880113415940 task.stack:
ffff880118350000
RIP: 0010:[<
ffffffff8172cb32>] [<
ffffffff8172cb32>] bd_mount+0x52/0xa0
RSP: 0018:
ffff880118357ca0 EFLAGS:
00010207
RAX:
dffffc0000000000 RBX:
ffffffffffffffff RCX:
ffffc90000bb6000
RDX:
0000000000000018 RSI:
ffffffff846d6b20 RDI:
00000000000000c7
RBP:
ffff880118357cb0 R08:
ffff880115967c68 R09:
0000000000000000
R10:
0000000000000000 R11:
0000000000000000 R12:
ffff8801188211e8
R13:
ffffffff847baa20 R14:
ffff8801139cb000 R15:
0000000000000080
FS:
00007fa3ff6c0700(0000) GS:
ffff88011aa00000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
0000000080050033
CR2:
00007fc1d8cc7e78 CR3:
0000000109f20000 CR4:
00000000000006f0
DR0:
000000000000001e DR1:
000000000000001e DR2:
0000000000000000
DR3:
0000000000000000 DR6:
00000000ffff0ff0 DR7:
0000000000000600
Stack:
ffff880112cfd6c0 ffff8801188211e8 ffff880118357cf0 ffffffff8167f207
ffffffff816d7a1e ffff880112a413c0 ffffffff847baa20 ffff8801188211e8
0000000000000080 ffff880112cfd6c0 ffff880118357d38 ffffffff816dce0a
Call Trace:
[<
ffffffff8167f207>] mount_fs+0x97/0x2e0
[<
ffffffff816d7a1e>] ? alloc_vfsmnt+0x55e/0x760
[<
ffffffff816dce0a>] vfs_kern_mount+0x7a/0x300
[<
ffffffff83c3247c>] ? _raw_read_unlock+0x2c/0x50
[<
ffffffff816dfc87>] do_mount+0x3d7/0x2730
[<
ffffffff81235fd4>] ? trace_do_page_fault+0x1f4/0x3a0
[<
ffffffff816df8b0>] ? copy_mount_string+0x40/0x40
[<
ffffffff8161ea81>] ? memset+0x31/0x40
[<
ffffffff816df73e>] ? copy_mount_options+0x1ee/0x320
[<
ffffffff816e2a02>] SyS_mount+0xb2/0x120
[<
ffffffff816e2950>] ? copy_mnt_ns+0x970/0x970
[<
ffffffff81005524>] do_syscall_64+0x1c4/0x4e0
[<
ffffffff83c3282a>] entry_SYSCALL64_slow_path+0x25/0x25
Code: 83 e8 63 1b fc ff 48 85 c0 48 89 c3 74 4c e8 56 35 d1 ff 48 8d bb c8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 36 4c 8b a3 c8 00 00 00 48 b8 00 00 00 00 00 fc
RIP [<
ffffffff8172cb32>] bd_mount+0x52/0xa0
RSP <
ffff880118357ca0>
---[ end trace
13690ad962168b98 ]---
mount_pseudo() returns ERR_PTR(), not NULL, on error.
Fixes:
3684aa7099e0 ("block-dev: enable writeback cgroup support")
Cc: Shaohua Li <shli@fb.com>
Cc: Tejun Heo <tj@kernel.org>
Cc: Jens Axboe <axboe@fb.com>
Cc: stable@vger.kernel.org
Signed-off-by: Vegard Nossum <vegard.nossum@oracle.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Joerg Roedel [Mon, 22 Aug 2016 10:33:56 +0000 (12:33 +0200)]
Merge branch 'for-joerg/arm-smmu/fixes' of git://git./linux/kernel/git/will/linux into iommu/fixes
Linus Torvalds [Sun, 21 Aug 2016 23:14:10 +0000 (16:14 -0700)]
Linux 4.8-rc3
Linus Torvalds [Sun, 21 Aug 2016 21:28:24 +0000 (14:28 -0700)]
Merge branch 'parisc-4.8-2' of git://git./linux/kernel/git/deller/parisc-linux
Pull two parisc fixes from Helge Deller:
"The first patch ensures that the high-res cr16 clocksource (which was
added in kernel 4.7) gets choosen as default clocksource for parisc.
The second patch moves the #define of EREFUSED down inside errno.h and
thus unbreaks building the gccgo compiler"
* 'parisc-4.8-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix order of EREFUSED define in errno.h
parisc: Fix automatic selection of cr16 clocksource
Tony Luck [Sat, 20 Aug 2016 23:27:58 +0000 (16:27 -0700)]
EDAC, skx_edac: Add EDAC driver for Skylake
This is an entirely new driver instead of yet another set of patches
to sb_edac.c because:
1) Mapping from PCI devices to socket/memory controller is significantly
different. Skylake scatters devices on a socket across a number of
PCI buses.
2) There is an extra level of interleaving via the "mcroute" register
that would be a little messy to squeeze into the old driver.
3) Validation is getting too expensive. Changes to sb_edac need to
be checked against Sandy Bridge, Ivy Bridge, Haswell, Broadwell and
Knights Landing.
Acked-by: Aristeu Rozanski <aris@redhat.com>
Acked-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Helge Deller [Sat, 20 Aug 2016 09:51:38 +0000 (11:51 +0200)]
parisc: Fix order of EREFUSED define in errno.h
When building gccgo in userspace, errno.h gets parsed and the go include file
sysinfo.go is generated.
Since EREFUSED is defined to the same value as ECONNREFUSED, and ECONNREFUSED
is defined later on in errno.h, this leads to go complaining that EREFUSED
isn't defined yet.
Fix this trivial problem by moving the define of EREFUSED down after
ECONNREFUSED in errno.h (and clean up the indenting while touching this line).
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
Helge Deller [Fri, 19 Aug 2016 20:39:02 +0000 (22:39 +0200)]
parisc: Fix automatic selection of cr16 clocksource
Commit
54b66800907 (parisc: Add native high-resolution sched_clock()
implementation) added support to use the CPU-internal cr16 counters as reliable
clocksource with the help of HAVE_UNSTABLE_SCHED_CLOCK.
Sadly the commit missed to remove the hack which prevented cr16 to become the
default clocksource even on SMP systems.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.7+
Vineet Gupta [Fri, 19 Aug 2016 20:59:02 +0000 (13:59 -0700)]
ARC: export __udivdi3 for modules
Some module using div_u64() was failing to link because the libgcc 64-bit
divide assist routine was not being exported for modules
Reported-by: avinashp@quantenna.com
Cc: stable@vger.kernel.org
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Jens Axboe [Fri, 19 Aug 2016 20:03:05 +0000 (14:03 -0600)]
Merge branch 'v4.8-rc2-bcache-fixes' of https://bitbucket.org/ewheelerinc/linux into for-linus
Eric writes:
Please pull this bcache branch based on v4.8-rc2. These fix one
deadlock, one use blkdev_put() use counter, and one dmesg output with a
better pr_err() description.
Linus Torvalds [Fri, 19 Aug 2016 19:47:01 +0000 (12:47 -0700)]
Make the hardened user-copy code depend on having a hardened allocator
The kernel test robot reported a usercopy failure in the new hardened
sanity checks, due to a page-crossing copy of the FPU state into the
task structure.
This happened because the kernel test robot was testing with SLOB, which
doesn't actually do the required book-keeping for slab allocations, and
as a result the hardening code didn't realize that the task struct
allocation was one single allocation - and the sanity checks fail.
Since SLOB doesn't even claim to support hardening (and you really
shouldn't use it), the straightforward solution is to just make the
usercopy hardening code depend on the allocator supporting it.
Reported-by: kernel test robot <xiaolong.ye@intel.com>
Cc: Kees Cook <keescook@chromium.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Fri, 19 Aug 2016 19:10:06 +0000 (12:10 -0700)]
Merge branch 'i2c/for-current' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"I2C has some pretty standard driver bugfixes and one minor cleanup"
* 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: meson: Use complete() instead of complete_all()
i2c: brcmstb: Use complete() instead of complete_all()
i2c: bcm-kona: Use complete() instead of complete_all()
i2c: bcm-iproc: Use complete() instead of complete_all()
i2c: at91: fix support of the "alternative command" feature
i2c: ocores: add missed clk_disable_unprepare() on failure paths
i2c: cros-ec-tunnel: Fix usage of cros_ec_cmd_xfer()
i2c: mux: demux-pinctrl: properly roll back when adding adapter fails
Vineet Gupta [Wed, 17 Aug 2016 01:27:07 +0000 (18:27 -0700)]
ARC: mm: fix build breakage with STRICT_MM_TYPECHECKS
| CC mm/memory.o
| In file included from ../mm/memory.c:53:0:
| ../include/linux/pfn_t.h: In function ‘pfn_t_pte’:
| ../include/linux/pfn_t.h:78:2: error: conversion to non-scalar type requested
| return pfn_pte(pfn_t_to_pfn(pfn), pgprot);
With STRICT_MM_TYPECHECKS pte_t is a struct and the offending code
forces a cast which ends up shifting a struct and hence the gcc warning.
Note that in recent past some of the arches (aarch64, s390) made
STRICT_MM_TYPECHECKS default, but we don't for ARC as this leads to slightly
worse generated code, given ARC ABI definition of returning structs
(which pte_t would become)
Quoting from ARC ABI...
"Results of type struct are returned in a caller-supplied temporary
variable whose address is passed in r0.
For such functions, the arguments are shifted so that they are
passed in r1 and up."
So
- struct to be returned would be allocated on stack requiring extra
code at call sites
- callee updates stack memory to facilitate the return (vs. simple
MOV into return reg r0)
Hence STRICT_MM_TYPECHECKS is not enabled by default for ARC
Cc: <stable@vger.kernel.org> #4.4+
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Vineet Gupta [Thu, 18 Aug 2016 00:34:46 +0000 (17:34 -0700)]
ARC: export kmap
| MODPOST 7 modules
| ERROR: "kmap" [fs/ext2/ext2.ko] undefined!
| ../scripts/Makefile.modpost:91: recipe for target '__modpost' failed
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Vineet Gupta [Wed, 10 Aug 2016 21:10:57 +0000 (14:10 -0700)]
ARC: Support syscall ABI v4
The syscall ABI includes the gcc functional calling ABI since a syscall
implies userland caller and kernel callee.
The current gcc ABI (v3) for ARCv2 ISA required 64-bit data be passed in
even-odd register pairs, (potentially punching reg holes when passing such
values as args). This was partly driven by the fact that the double-word
LDD/STD instructions in ARCv2 expect the register alignment and thus gcc
forcing this avoids extra MOV at the cost of a few unused register (which we
have plenty anyways).
This however was rejected as part of upstreaming gcc port to HS. So the new
ABI v4 doesn't enforce the even-odd reg restriction.
Do note that for ARCompact ISA builds v3 and v4 are practically the same in
terms of gcc code generation.
In terms of change management, we infer the new ABI if gcc 6.x onwards
is used for building the kernel.
This also needs a stable backport to enable older kernels to work with
new tools/user-space
Cc: <stable@vger.kernel.org>
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Liav Rehana [Tue, 16 Aug 2016 07:55:35 +0000 (10:55 +0300)]
ARC: use correct offset in pt_regs for saving/restoring user mode r25
User mode callee regs are explicitly collected before signal delivery or
breakpoint trap. r25 is special for kernel as it serves as task pointer,
so user mode value is clobbered very early. It is saved in pt_regs where
generally only scratch (aka caller saved) regs are saved.
The code to access the corresponding pt_regs location had a subtle bug as
it was using load/store with scaling of offset, whereas the offset was already
byte wise correct. So fix this by replacing LD.AS with a standard LD
Cc: <stable@vger.kernel.org>
Signed-off-by: Liav Rehana <liavr@mellanox.com>
Reviewed-by: Alexey Brodkin <abrodkin@synopsys.com>
[vgupta: rewrote title and commit log]
Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Dmitry Torokhov [Wed, 17 Aug 2016 00:38:54 +0000 (17:38 -0700)]
Input: i8042 - set up shared ps2_cmd_mutex for AUX ports
The commit
4097461897df ("Input: i8042 - break load dependency ...")
correctly set up ps2_cmd_mutex pointer for the KBD port but forgot to do
the same for AUX port(s), which results in communication on KBD and AUX
ports to clash with each other.
Fixes:
4097461897df ("Input: i8042 - break load dependency ...")
Reported-by: Bruno Wolff III <bruno@wolff.to>
Tested-by: Bruno Wolff III <bruno@wolff.to>
Cc: stable@vger.kernel.org
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Jens Axboe [Fri, 19 Aug 2016 16:51:15 +0000 (10:51 -0600)]
Merge branch 'stable/for-jens-4.8-for-linus' of git://git./linux/kernel/git/konrad/xen into for-linus
Konrad writes:
Please git pull the following three fixes in to your 'for-linus' branch.
It is against 'for-linus' instead of 'for-4.8/drivers' because we had
some code in xen-blkfront go through the Xen tree (with your Ack). The
reason was that you 'for-4.8/drivers' was based on 4.7-rc2, and the
fixes needed to be against newer tag.
This branch fixes as we are exercising the multiqueue components more
aggressively.
Linus Torvalds [Fri, 19 Aug 2016 16:32:48 +0000 (09:32 -0700)]
Merge tag 'dm-4.8-fixes-2' of git://git./linux/kernel/git/device-mapper/linux-dm
Pull device mapper fixes from Mike Snitzer:
- a stable fix for DM round robin multipath path selector to disable
preemption before using this_cpu_ptr()
- a slight increase in DM crypt's mempool reserves to make swap ontop
of DM crypt more performant
- a few DM raid fixes to issues found while testing changes that were
merged in v4.8-rc1
* tag 'dm-4.8-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm raid: support raid0 with missing metadata devices
dm raid: enhance attempt_restore_of_faulty_devices() to support more devices
dm raid: fix restoring of failed devices regression
dm raid: fix frozen recovery regression
dm crypt: increase mempool reserve to better support swapping
dm round robin: do not use this_cpu_ptr() without having preemption disabled
Bob Liu [Wed, 27 Jul 2016 09:42:04 +0000 (17:42 +0800)]
xen-blkfront: free resources if xlvbd_alloc_gendisk fails
Current code forgets to free resources in the failure path of
xlvbd_alloc_gendisk(), this patch fix it.
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Bob Liu [Fri, 1 Jul 2016 21:43:39 +0000 (17:43 -0400)]
xen-blkfront: introduce blkif_set_queue_limits()
blk_mq_update_nr_hw_queues() reset all queue limits to default which it's
not as xen-blkfront expected, introducing blkif_set_queue_limits() to reset
limits with initial correct values.
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Bob Liu [Fri, 1 Jul 2016 19:45:57 +0000 (15:45 -0400)]
xen-blkfront: fix places not updated after introducing 64KB page granularity
Two places didn't get updated when 64KB page granularity was introduced,
this patch fix them.
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Linus Torvalds [Fri, 19 Aug 2016 16:22:50 +0000 (09:22 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Six fairly small fixes. The ipr, mpt3sas and ses ones all trigger
oopses. The megaraid one fixes an attach failure on io mapped only
cards, the fcoe one is an obvious problem in the error path and the
aacraid one is a theoretical security issue (ability to trick the
kernel into a buffer overrun)"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
ses: Fix racy cleanup of /sys in remove_dev()
mpt3sas: Fix resume on WarpDrive flash cards
ipr: Fix sync scsi scan
megaraid_sas: Fix probing cards without io port
aacraid: Check size values after double-fetch from user
fcoe: Use kfree_skb() instead of kfree()
Linus Torvalds [Fri, 19 Aug 2016 16:21:24 +0000 (09:21 -0700)]
Merge tag 'usb-4.8-rc3' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are a number of USB fixes for reported issues for your tree.
The normal amount of gadget fixes, xhci fixes, new device ids, and a
few other minor things. All of them have been in linux-next for a
while, the full details are in the shortlog below"
* tag 'usb-4.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (43 commits)
xhci: don't dereference a xhci member after removing xhci
usb: xhci: Fix panic if disconnect
xhci: really enqueue zero length TRBs.
xhci: always handle "Command Ring Stopped" events
cdc-acm: fix wrong pipe type on rx interrupt xfers
usb: misc: usbtest: add fix for driver hang
usb: dwc3: gadget: stop processing on HWO set
usb: dwc3: don't set last bit for ISOC endpoints
usb: gadget: rndis: free response queue during REMOTE_NDIS_RESET_MSG
usb: udc: core: fix error handling
usb: gadget: fsl_qe_udc: off by one in setup_received_handle()
usb/gadget: fix gadgetfs aio support.
usb: gadget: composite: Fix return value in case of error
usb: gadget: uvc: Fix return value in case of error
usb: gadget: fix check in sync read from ep in gadgetfs
usb: misc: usbtest: usbtest_do_ioctl may return positive integer
usb: dwc3: fix missing platform_set_drvdata() in dwc3_of_simple_probe()
usb: phy: omap-otg: Fix missing platform_set_drvdata() in omap_otg_probe()
usb: gadget: configfs: add mutex lock before unregister gadget
usb: gadget: u_ether: fix dereference after null check coverify warning
...
Linus Torvalds [Fri, 19 Aug 2016 16:06:41 +0000 (09:06 -0700)]
Merge tag 'xfs-iomap-for-linus-4.8-rc3' of git://git./linux/kernel/git/dgc/linux-xfs
Pull xfs and iomap fixes from Dave Chinner:
"Changes in this update:
Regression fixes for XFS changes introduce in 4.8-rc1:
- buffer IO accounting assert failure
- ENOSPC block accounting reservation issue
- DAX IO path page cache invalidation fix
- rmapbt on-disk block count in agf
- correct classification of rmap block type when updating AGFL.
- iomap support for attribute fork mapping
Regression fixes for iomap infrastructure in 4.8-rc1:
- fiemap: honor FIEMAP_FLAG_SYNC
- fiemap: implement FIEMAP_FLAG_XATTR support to fix XFS regression
- make mark_page_accessed and pagefault_disable usage consistent with
other IO paths"
* tag 'xfs-iomap-for-linus-4.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs:
xfs: remove OWN_AG rmap when allocating a block from the AGFL
xfs: (re-)implement FIEMAP_FLAG_XATTR
xfs: simplify xfs_file_iomap_begin
iomap: mark ->iomap_end as optional
iomap: prepare iomap_fiemap for attribute mappings
iomap: fiemap should honor the FIEMAP_FLAG_SYNC flag
iomap: remove superflous pagefault_disable from iomap_write_actor
iomap: remove superflous mark_page_accessed from iomap_write_actor
xfs: store rmapbt block count in the AGF
xfs: don't invalidate whole file on DAX read/write
xfs: fix bogus space reservation in xfs_iomap_write_allocate
xfs: don't assert fail on non-async buffers on ioacct decrement
Linus Torvalds [Fri, 19 Aug 2016 15:52:17 +0000 (08:52 -0700)]
Merge tag 'hwmon-for-linus-v4.8-rc2' of git://git./linux/kernel/git/groeck/linux-staging
Pull hwmon fixes from Guenter Roeck:
"Fix a bug in it87 driver and URLs in ftsteutates driver"
* tag 'hwmon-for-linus-v4.8-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (ftsteutates) Correct ftp urls in driver documentation
hwmon: (it87) Features mask must be 32 bit wide
Corentin LABBE [Tue, 16 Aug 2016 08:51:38 +0000 (10:51 +0200)]
thermal: imx: fix a possible NULL dereference
of_match_device could return NULL, and so cause a NULL pointer
dereference later at line 472:
data->socdata = of_id->data;
For fixing this problem, we use of_device_get_match_data(), this will
simplify the code a little by using a standard function for
getting the match data.
Reported-by: coverity (CID 1324128)
Signed-off-by: LABBE Corentin <clabbe.montjoie@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Caesar Wang [Tue, 3 May 2016 12:07:41 +0000 (20:07 +0800)]
thermal: trivial: fix the typo
See the thermal code, the obvious typo from my editor.
Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Markus Elfring [Mon, 15 Aug 2016 09:22:40 +0000 (11:22 +0200)]
Thermal-INT3406: Delete owner assignment
The field "owner" is set by core. Thus delete an extra initialisation.
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Brendan Jackman [Wed, 17 Aug 2016 15:14:59 +0000 (16:14 +0100)]
thermal: cpu_cooling: Fix NULL dereference in cpufreq_state2power
Currently all CPU cooling devices share a
`struct thermal_cooling_device_ops` instance. The thermal core uses the
presence of functions in this struct to determine if a cooling device
has a power model (see cdev_is_power_actor). cpu_cooling.c adds the
power model functions to the shared struct when a device is registered
with a power model.
Therefore, if a CPU cooling device is registered using
[of_]cpufreq_power_cooling_register, _all_ devices will be determined to
have a power model, including any registered with
[of_]cpufreq_cooling_register. This can result in cpufreq_state2power
being called on a device where dyn_power_table is NULL.
With this commit, instead of having a shared thermal_cooling_device_ops
which is mutated, we have two versions: one with the power functions and
one without.
Signed-off-by: Brendan Jackman <brendan.jackman@arm.com>
Cc: Amit Daniel Kachhap <amit.kachhap@gmail.com>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Javi Merino <javi.merino@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Javi Merino <javi.merino@arm.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Linus Walleij [Tue, 16 Aug 2016 10:07:31 +0000 (12:07 +0200)]
gpio: make any OF dependent driver depend on OF_GPIO
The drivers that depend on OF but not OF_GPIO are wreaking havoc
with the autobuilders for archs that have all requirements for
OF but not for OF_GPIO, particularly the UM (Usermode) arch does
not have iomem (NO_IOMEM) which result in configuring GPIOLIB but
without OF_GPIO which is wrong if the driver is using the .of_node
of the gpiochip, which only appears with OF_GPIO.
After a brief look at the drivers just depending on OF it seems
most if not all of them actually require stuff from gpiolib-of so
the dependency is wrong in the first place.
This simply patches the Kconfig so that all GPIO drivers using OF
depend on OF_GPIO rather than just OF.
Cc: Rabin Vincent <rabin@rab.in>
Cc: Pramod Gurav <pramod.gurav@smartplayin.com>
Cc: Andreas Larsson <andreas@gaisler.com>
Cc: Gregory CLEMENT <gregory.clement@free-electrons.com>
Cc: Thierry Reding <treding@nvidia.com>
Cc: Laxman Dewangan <ldewangan@nvidia.com>
Cc: Alexandre Courbot <acourbot@nvidia.com>
Cc: Geert Uytterhoeven <geert+renesas@glider.be>
Cc: Phil Reid <preid@electromag.com.au>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Linus Walleij [Tue, 16 Aug 2016 07:58:25 +0000 (09:58 +0200)]
gpio: Fix OF build problem on UM
The UserMode (UM) Linux build was failing in gpiolib-of as it requires
ioremap()/iounmap() to exist, which is absent from UM. The non-existence
of IO memory is negatively defined as CONFIG_NO_IOMEM which means we
need to depend on HAS_IOMEM.
Cc: stable@vger.kernel.org
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Will Deacon [Tue, 16 Aug 2016 13:29:16 +0000 (14:29 +0100)]
iommu/arm-smmu: Don't BUG() if we find aborting STEs with disable_bypass
The disable_bypass cmdline option changes the SMMUv3 driver to put down
faulting stream table entries by default, as opposed to bypassing
transactions from unconfigured devices.
In this mode of operation, it is entirely expected to see aborting
entries in the stream table if and when we come to installing a valid
translation, so don't trigger a BUG() as a result of misdiagnosing these
entries as stream table corruption.
Cc: <stable@vger.kernel.org>
Fixes:
48ec83bcbcf5 ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices")
Tested-by: Robin Murphy <robin.murphy@arm.com>
Reported-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Will Deacon [Fri, 5 Aug 2016 18:49:45 +0000 (19:49 +0100)]
iommu/arm-smmu: Disable stalling faults for all endpoints
Enabling stalling faults can result in hardware deadlock on poorly
designed systems, particularly those with a PCI root complex upstream of
the SMMU.
Although it's not really Linux's job to save hardware integrators from
their own misfortune, it *is* our job to stop userspace (e.g. VFIO
clients) from hosing the system for everybody else, even if they might
already be required to have elevated privileges.
Given that the fault handling code currently executes entirely in IRQ
context, there is nothing that can sensibly be done to recover from
things like page faults anyway, so let's rip this code out for now and
avoid the potential for deadlock.
Cc: <stable@vger.kernel.org>
Fixes:
48ec83bcbcf5 ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices")
Reported-by: Matt Evans <matt.evans@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Will Deacon [Fri, 29 Jul 2016 10:15:37 +0000 (11:15 +0100)]
iommu/arm-smmu: Fix CMDQ error handling
In the unlikely event of a global command queue error, the ARM SMMUv3
driver attempts to convert the problematic command into a CMD_SYNC and
resume the command queue. Unfortunately, this code is pretty badly
broken:
1. It uses the index into the error string table as the CMDQ index,
so we probably read the wrong entry out of the queue
2. The arguments to queue_write are the wrong way round, so we end up
writing from the queue onto the stack.
These happily cancel out, so the kernel is likely to stay alive, but
the command queue will probably fault again when we resume.
This patch fixes the error handling code to use the correct queue index
and write back the CMD_SYNC to the faulting entry.
Cc: <stable@vger.kernel.org>
Fixes:
48ec83bcbcf5 ("iommu/arm-smmu: Add initial driver support for ARM SMMUv3 devices")
Reported-by: Diwakar Subraveti <Diwakar.Subraveti@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Robin Murphy [Thu, 11 Aug 2016 16:44:05 +0000 (17:44 +0100)]
iommu/io-pgtable-arm-v7s: Fix attributes when splitting blocks
Due to the attribute bits being all over the place in the different
types of short-descriptor PTEs, when remapping an existing entry, e.g.
splitting a section into pages, we take the approach of decomposing
the PTE attributes back to the IOMMU API flags to start from scratch.
On inspection, though, the existing code seems to have got the read-only
bit backwards and ignored the XN bit. How embarrassing...
Fortunately the primary user so far, the Mediatek IOMMU, both never
splits blocks (because it only serves non-overlapping DMA API calls) and
also ignores permissions anyway, but let's put things right before any
future users trip up.
Cc: <stable@vger.kernel.org>
Fixes:
e5fc9753b1a8 ("iommu/io-pgtable: Add ARMv7 short descriptor support")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Eric Wheeler [Fri, 19 Aug 2016 03:15:26 +0000 (20:15 -0700)]
bcache: pr_err: more meaningful error message when nr_stripes is invalid
The original error was thought to be corruption, but was actually caused by:
make-bcache --data-offset N
where N was in bytes and should have been in sectors. While userspace
tools should be updated to check --data-offset beyond end of volume,
hopefully this will help others that might not have noticed the units.
Signed-off-by: Eric Wheeler <bcache@linux.ewheeler.net>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Kent Overstreet [Thu, 18 Aug 2016 01:21:24 +0000 (18:21 -0700)]
bcache: RESERVE_PRIO is too small by one when prio_buckets() is a power of two.
This patch fixes a cachedev registration-time allocation deadlock.
This can deadlock on boot if your initrd auto-registeres bcache devices:
Allocator thread:
[ 720.727614] INFO: task bcache_allocato:3833 blocked for more than 120 seconds.
[ 720.732361] [<
ffffffff816eeac7>] schedule+0x37/0x90
[ 720.732963] [<
ffffffffa05192b8>] bch_bucket_alloc+0x188/0x360 [bcache]
[ 720.733538] [<
ffffffff810e6950>] ? prepare_to_wait_event+0xf0/0xf0
[ 720.734137] [<
ffffffffa05302bd>] bch_prio_write+0x19d/0x340 [bcache]
[ 720.734715] [<
ffffffffa05190bf>] bch_allocator_thread+0x3ff/0x470 [bcache]
[ 720.735311] [<
ffffffff816ee41c>] ? __schedule+0x2dc/0x950
[ 720.735884] [<
ffffffffa0518cc0>] ? invalidate_buckets+0x980/0x980 [bcache]
Registration thread:
[ 720.710403] INFO: task bash:3531 blocked for more than 120 seconds.
[ 720.715226] [<
ffffffff816eeac7>] schedule+0x37/0x90
[ 720.715805] [<
ffffffffa05235cd>] __bch_btree_map_nodes+0x12d/0x150 [bcache]
[ 720.716409] [<
ffffffffa0522d30>] ? bch_btree_insert_check_key+0x1c0/0x1c0 [bcache]
[ 720.717008] [<
ffffffffa05236e4>] bch_btree_insert+0xf4/0x170 [bcache]
[ 720.717586] [<
ffffffff810e6950>] ? prepare_to_wait_event+0xf0/0xf0
[ 720.718191] [<
ffffffffa0527d9a>] bch_journal_replay+0x14a/0x290 [bcache]
[ 720.718766] [<
ffffffff810cc90d>] ? ttwu_do_activate.constprop.94+0x5d/0x70
[ 720.719369] [<
ffffffff810cf684>] ? try_to_wake_up+0x1d4/0x350
[ 720.719968] [<
ffffffffa05317d0>] run_cache_set+0x580/0x8e0 [bcache]
[ 720.720553] [<
ffffffffa053302e>] register_bcache+0xe2e/0x13b0 [bcache]
[ 720.721153] [<
ffffffff81354cef>] kobj_attr_store+0xf/0x20
[ 720.721730] [<
ffffffff812a2dad>] sysfs_kf_write+0x3d/0x50
[ 720.722327] [<
ffffffff812a225a>] kernfs_fop_write+0x12a/0x180
[ 720.722904] [<
ffffffff81225177>] __vfs_write+0x37/0x110
[ 720.723503] [<
ffffffff81228048>] ? __sb_start_write+0x58/0x110
[ 720.724100] [<
ffffffff812cedb3>] ? security_file_permission+0x23/0xa0
[ 720.724675] [<
ffffffff812258a9>] vfs_write+0xa9/0x1b0
[ 720.725275] [<
ffffffff8102479c>] ? do_audit_syscall_entry+0x6c/0x70
[ 720.725849] [<
ffffffff81226755>] SyS_write+0x55/0xd0
[ 720.726451] [<
ffffffff8106a390>] ? do_page_fault+0x30/0x80
[ 720.727045] [<
ffffffff816f2cae>] system_call_fastpath+0x12/0x71
The fifo code in upstream bcache can't use the last element in the buffer,
which was the cause of the bug: if you asked for a power of two size,
it'd give you a fifo that could hold one less than what you asked for
rather than allocating a buffer twice as big.
Signed-off-by: Kent Overstreet <kent.overstreet@gmail.com>
Tested-by: Eric Wheeler <bcache@linux.ewheeler.net>
Cc: stable@vger.kernel.org
Eric Wheeler [Fri, 17 Jun 2016 22:01:54 +0000 (15:01 -0700)]
bcache: register_bcache(): call blkdev_put() when cache_alloc() fails
register_cache() is supposed to return an error string on error so that
register_bcache() will will blkdev_put and cleanup other user counters,
but it does not set 'char *err' when cache_alloc() fails (eg, due to
memory pressure) and thus register_bcache() performs no cleanup.
register_bcache() <----------\ <- no jump to err_close, no blkdev_put()
| |
+->register_cache() | <- fails to set char *err
| |
+->cache_alloc() ---/ <- returns error
This patch sets `char *err` for this failure case so that register_cache()
will cause register_bcache() to correctly jump to err_close and do
cleanup. This was tested under OOM conditions that triggered the bug.
Signed-off-by: Eric Wheeler <bcache@linux.ewheeler.net>
Cc: Kent Overstreet <kent.overstreet@gmail.com>
Cc: stable@vger.kernel.org
Linus Torvalds [Fri, 19 Aug 2016 02:38:18 +0000 (19:38 -0700)]
Merge tag 'drm-fixes-for-4.8-rc3-2' of git://people.freedesktop.org/~airlied/linux
Pull more drm fixes from Dave Airlie:
"Daniel pointed out I'd missed some i915 fixes, and I also found a
single etnaviv fix I missed.
So here they are"
* tag 'drm-fixes-for-4.8-rc3-2' of git://people.freedesktop.org/~airlied/linux:
drm/etnaviv: take GPU lock later in the submit process
drm/i915: Fix modeset handling during gpu reset, v5.
drm/i915: fix aliasing_ppgtt leak
drm/i915: fix WaInsertDummyPushConstPs
drm/i915: Fix iboost setting for SKL Y/U DP DDI buffer translation entry 2
drm/i915/gen9: Give one extra block per line for SKL plane WM calculations
drm/i915: Acquire audio powerwell for HD-Audio registers
drm/i915: Add missing rpm wakelock to GGTT pread
drm/i915/fbc: FBC causes display flicker when VT-d is enabled on Skylake
drm/i915: Clean up the extra RPM ref on CHV with i915.enable_rc6=0
drm/i915: Program iboost settings for HDMI/DVI on SKL
drm/i915: Fix iboost setting for DDI with 4 lanes on SKL
drm/i915: Handle ENOSPC after failing to insert a mappable node
drm/i915: Flush GT idle status upon reset
Linus Torvalds [Fri, 19 Aug 2016 02:31:08 +0000 (19:31 -0700)]
Merge tag 'devicetree-fixes-for-4.8' of git://git./linux/kernel/git/robh/linux
Pull DeviceTree fixes from Rob Herring:
- a couple of DT node ref counting fixes
- fix __unflatten_device_tree for PPC PCI hotplug case
- rework marking irq controllers as OF_POPULATED in cases where real
driver is used.
- disable of_platform_default_populate_init on PPC. The change in
initcall order causes problems which need to be sorted out later.
* tag 'devicetree-fixes-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
of: fix reference counting in of_graph_get_endpoint_by_regs
of/platform: disable the of_platform_default_populate_init() for all the ppc boards
ARM: imx6: mark GPC node as not populated after irq init to probe pm domain driver
of/irq: Mark interrupt controllers as populated before initialisation
drivers/of: Validate device node in __unflatten_device_tree()
of: Delete an unnecessary check before the function call "of_node_put"
Chao Yu [Thu, 4 Aug 2016 12:13:03 +0000 (20:13 +0800)]
f2fs: avoid potential deadlock in f2fs_move_file_range
Thread A Thread B
- inode_lock fileA
- inode_lock fileB
- inode_lock fileA
- inode_lock fileB
We may encounter above potential deadlock during moving file range in
concurrent scenario. This patch fixes the issue by using inode_trylock
instead.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Thu, 4 Aug 2016 12:13:02 +0000 (20:13 +0800)]
f2fs: allow copying file range only in between regular files
Only if two input files are regular files, we allow copying data in
range of them, otherwise, deny it.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Chao Yu [Sat, 6 Aug 2016 13:09:41 +0000 (21:09 +0800)]
Revert "f2fs: move i_size_write in f2fs_write_end"
This reverts commit
a2ee0a300344a6da76186129b078113354fe13d2.
When testing with generic/032 of xfstest suit, failure message will be
reported as below:
generic/032 8s ... [failed, exit status 1] - output mismatch (see results/generic/032.out.bad)
--- tests/generic/032.out 2015-01-11 16:52:27.
643681072 +0800
+++ results/generic/032.out.bad 2016-08-06 13:44:43.
861330500 +0800
@@ -1,5 +1,5 @@
QA output created by 032
-100 iterations
-
0000000 cdcd cdcd cdcd cdcd cdcd cdcd cdcd cdcd
-*
-
0100000
+1: [768..775]: unwritten
+Unwritten extents found!
...
(Run 'diff -u tests/generic/032.out results/generic/032.out.bad' to see the entire diff)
Ran: generic/032
Failures: generic/032
Failed 1 of 1 tests
In write_end(), we should update i_size of inode before unlock page,
otherwise, we will lose newly updated data in following race condition.
Thread A Thread B
- write_end
- unlock page
- writepages
- lock_page
- writepage
if page is out-of-range of file size,
we will skip writting the page.
- update i_size
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Jaegeuk Kim [Thu, 4 Aug 2016 18:38:25 +0000 (11:38 -0700)]
Revert "f2fs: use percpu_rw_semaphore"
LKP reported -36.3% regression of fsmark.files_per_sec due to this patch.
I've confirmed that fxmark [1] has also slight regression for DWAL.
[1] https://github.com/sslab-gatech/fxmark
This reverts commit
ec795418c41850056feb956534edf059dc1155d4.
Linus Torvalds [Fri, 19 Aug 2016 01:54:40 +0000 (18:54 -0700)]
Merge tag '4.8-doc-fixes' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"Three small fixes for Sphinx-formatted documentation generation"
* tag '4.8-doc-fixes' of git://git.lwn.net/linux:
doc-rst: customize RTD theme, drop padding of inline literal
docs: kernel-documentation: remove some highlight directives
docs: Set the Sphinx default highlight language to "guess"
Dave Airlie [Thu, 18 Aug 2016 22:51:13 +0000 (08:51 +1000)]
Merge tag 'drm-intel-fixes-2016-08-15' of git://anongit.freedesktop.org/drm-intel into drm-fixes
Collection of i915 fixes.
* tag 'drm-intel-fixes-2016-08-15' of git://anongit.freedesktop.org/drm-intel:
drm/i915: Fix modeset handling during gpu reset, v5.
drm/i915: fix aliasing_ppgtt leak
drm/i915: fix WaInsertDummyPushConstPs
drm/i915: Fix iboost setting for SKL Y/U DP DDI buffer translation entry 2
drm/i915/gen9: Give one extra block per line for SKL plane WM calculations
drm/i915: Acquire audio powerwell for HD-Audio registers
drm/i915: Add missing rpm wakelock to GGTT pread
drm/i915/fbc: FBC causes display flicker when VT-d is enabled on Skylake
drm/i915: Clean up the extra RPM ref on CHV with i915.enable_rc6=0
drm/i915: Program iboost settings for HDMI/DVI on SKL
drm/i915: Fix iboost setting for DDI with 4 lanes on SKL
drm/i915: Handle ENOSPC after failing to insert a mappable node
drm/i915: Flush GT idle status upon reset
Dave Airlie [Thu, 18 Aug 2016 22:50:42 +0000 (08:50 +1000)]
Merge branch 'drm-etnaviv-fixes' of git://git.pengutronix.de/git/lst/linux into drm-fixes
Single GPU recovery fix
* 'drm-etnaviv-fixes' of git://git.pengutronix.de/git/lst/linux:
drm/etnaviv: take GPU lock later in the submit process
Linus Torvalds [Thu, 18 Aug 2016 22:09:41 +0000 (15:09 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"An initrd microcode loading fix, and an SMP bootup topology setup fix
to resolve crashes on SGI/UV systems if the BIOS is configured in a
certain way"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/smp: Fix __max_logical_packages value setup
x86/microcode/AMD: Fix initrd loading with CONFIG_RANDOMIZE_MEMORY=y
Linus Torvalds [Thu, 18 Aug 2016 22:08:31 +0000 (15:08 -0700)]
Merge branch 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
"Three clocksource driver fixes"
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
clocksource/drivers/mips-gic-timer: Make gic_clocksource_of_init() return int
clocksource/drivers/kona: Fix get_counter() error handling
clocksource/drivers/time-armada-370-xp: Fix the clock reference
Linus Torvalds [Thu, 18 Aug 2016 22:07:21 +0000 (15:07 -0700)]
Merge branch 'sched-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull scheduler fixes from Ingo Molnar:
"Two cputime fixes - hopefully the last ones"
* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/cputime: Resync steal time when guest & host lose sync
sched/cputime: Fix NO_HZ_FULL getrusage() monotonicity regression
Linus Torvalds [Thu, 18 Aug 2016 22:04:53 +0000 (15:04 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, but also start/stop filter related fixes, a perf
event read() fix, a fix uncovered by fuzzing, and an uprobes leak fix"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Check return value of the perf_event_read() IPI
perf/core: Enable mapping of the stop filters
perf/core: Update filters only on executable mmap
perf/core: Fix file name handling for start/stop filters
perf/core: Fix event_function_local()
uprobes: Fix the memcg accounting
perf intel-pt: Fix occasional decoding errors when tracing system-wide
tools: Sync kvm related header files for arm64 and s390
perf probe: Release resources on error when handling exit paths
perf probe: Check for dup and fdopen failures
perf symbols: Fix annotation of objects with debuginfo files
perf script: Don't disable use_callchain if input is pipe
perf script: Show proper message when failed list scripts
perf jitdump: Add the right header to get the major()/minor() definitions
perf ppc64le: Fix build failure when libelf is not present
perf tools mem: Fix -t store option for record command
perf intel-pt: Fix ip compression
Linus Torvalds [Thu, 18 Aug 2016 20:45:48 +0000 (13:45 -0700)]
Merge branch 'locking-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull locking fixes from Ingo Molnar:
"Two lockless_dereference() related fixes"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/barriers: Suppress sparse warnings in lockless_dereference()
Revert "drm/fb-helper: Reduce READ_ONCE(master) to lockless_dereference"
Linus Torvalds [Thu, 18 Aug 2016 18:17:13 +0000 (11:17 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Catalin Marinas:
- Avoid a literal load with the MMU off on the CPU resume path
(potential inconsistency between cache and RAM)
- Build error with CONFIG_ACPI=n fixed
- Compiler warning in the arch/arm64/mm/dump.c code fixed
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: Fix shift warning in arch/arm64/mm/dump.c
arm64: kernel: avoid literal load of virtual address with MMU off
arm64: Fix NUMA build error when !CONFIG_ACPI
Linus Torvalds [Thu, 18 Aug 2016 18:13:20 +0000 (11:13 -0700)]
Merge branch 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Only three fixes this time:
- Emil found an overflow problem with the memory layout sanity check.
- Ard Biesheuvel noticed that late-allocated page tables (for EFI)
weren't being properly constructed.
- Guenter Roeck reported a problem found on qemu caused by the recent
addr_limit changes"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: fix address limit restoration for undefined instructions
ARM: 8591/1: mm: use fully constructed struct pages for EFI pgd allocations
ARM: 8590/1: sanity_check_meminfo(): avoid overflow on vmalloc_limit
Linus Torvalds [Thu, 18 Aug 2016 18:09:43 +0000 (11:09 -0700)]
Merge tag 'pm-4.8-rc3' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"More hibernation-related material: one fix for a recent regression in
the core, one small cleanup of the x86-64 resume code and a
documentation update.
Specifics:
- Fix a hibernate core regression resulting from uncovering a latent
bug in its implementation of memory bitmaps by a recent commit
(James Morse).
- Use __pa() to compute a physical address in the x86-64 code
finalizing resume from hibernation (Rafael Wysocki).
- Update power management documentation related to system sleep
states to remove outdated information from it and to add a
description of a recently introduced hibernation debug feature to
it (Rafael Wysocki)"
* tag 'pm-4.8-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM / hibernate: Fix rtree_next_node() to avoid walking off list ends
x86/power/64: Use __pa() for physical address computation
PM / sleep: Update some system sleep documentation
Linus Torvalds [Thu, 18 Aug 2016 17:58:50 +0000 (10:58 -0700)]
Merge tag 'drm-fixes-for-4.8-rc3' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"Pretty quiet so far:
- a few amdgpu/radeon fixup for pcie pm changes
- a couple of amdgpu fixes
- some build fixes
- printk fix"
* tag 'drm-fixes-for-4.8-rc3' of git://people.freedesktop.org/~airlied/linux:
drm/amdgpu: Change GART offset to 64-bit
drm/mediatek: add ARM_SMCCC dependency
drm/mediatek: add CONFIG_OF dependency
drm/mediatek: add COMMON_CLK dependency
drm/amdgpu: Fix memory trashing if UVD ring test fails
drm/amdgpu: fix vm init error path
drm/amdkfd: print doorbell offset as a hex value
Revert "drm/radeon: work around lack of upstream ACPI support for D3cold"
Revert "drm/amdgpu: work around lack of upstream ACPI support for D3cold"
Johannes Berg [Thu, 11 Aug 2016 09:50:22 +0000 (11:50 +0200)]
locking/barriers: Suppress sparse warnings in lockless_dereference()
After Peter's commit:
331b6d8c7afc ("locking/barriers: Validate lockless_dereference() is used on a pointer type")
... we get a lot of sparse warnings (one for every rcu_dereference, and more)
since the expression here is assigning to the wrong address space.
Instead of validating that 'p' is a pointer this way, instead make
it fail compilation when it's not by using sizeof(*(p)). This will
not cause any sparse warnings (tested, likely since the address
space is irrelevant for sizeof), and will fail compilation when
'p' isn't a pointer type.
Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Daniel Vetter <daniel.vetter@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes:
331b6d8c7afc ("locking/barriers: Validate lockless_dereference() is used on a pointer type")
Link: http://lkml.kernel.org/r/1470909022-687-2-git-send-email-johannes@sipsolutions.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Johannes Berg [Thu, 11 Aug 2016 09:50:21 +0000 (11:50 +0200)]
Revert "drm/fb-helper: Reduce READ_ONCE(master) to lockless_dereference"
This reverts commit:
fa7d81bb3c269 ("drm/fb-helper: Reduce READ_ONCE(master) to lockless_dereference")
As Peter explained:
[...] lockless_dereference() is _stronger_ than READ_ONCE(), not weaker.
[...]
Also, clue is in the name: 'dereference', you don't actually dereference
the pointer here, only load it.
My next patch breaks the compile without this revert, because it assumes
you want to deference and thus also need the struct type visible (which
it isn't here), so revert it.
Tested-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1470909022-687-1-git-send-email-johannes@sipsolutions.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Christoph Hellwig [Thu, 11 Aug 2016 14:11:05 +0000 (07:11 -0700)]
PCI: Call pci_intx() when using legacy interrupts in pci_alloc_irq_vectors()
ahci currently insists on an explicit call to pci_intx() before falling
back from MSI or MSI-X to legacy IRQs. As pci_intx() is a no-op if the
command register already contains the right value it seems safe and useful
to add this call to pci_alloc_irq_vectors() so that ahci can just use
pci_alloc_irq_vectors().
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Catalin Marinas [Fri, 5 Dec 2014 12:34:54 +0000 (12:34 +0000)]
arm64: Fix shift warning in arch/arm64/mm/dump.c
When building with 48-bit VAs and 16K page configuration, it's possible
to get the following warning when building the arm64 page table dumping
code:
arch/arm64/mm/dump.c: In function ‘walk_pud’:
arch/arm64/mm/dump.c:274:102: warning: right shift count >= width of type [-Wshift-count-overflow]
This is because pud_offset(pgd, 0) performs a shift to the right by 36
while the value 0 has the type 'int' by default, therefore 32-bit.
This patch modifies all the p*_offset() uses in arch/arm64/mm/dump.c to
use 0UL for the address argument.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Wanpeng Li [Wed, 17 Aug 2016 02:05:46 +0000 (10:05 +0800)]
sched/cputime: Resync steal time when guest & host lose sync
Commit:
57430218317e ("sched/cputime: Count actually elapsed irq & softirq time")
... fixed a bug but also triggered a regression:
On an i5 laptop, 4 pCPUs, 4vCPUs for one full dynticks guest, there are four
CPU hog processes(for loop) running in the guest, I hot-unplug the pCPUs
on host one by one until there is only one left, then observe CPU utilization
via 'top' in the guest, it shows:
100% st for cpu0(housekeeping)
75% st for other CPUs (nohz full mode)
However, w/o this commit it shows the correct 75% for all four CPUs.
When a guest is interrupted for a longer amount of time, missed clock ticks
are not redelivered later. Because of that, we should not limit the amount
of steal time accounted to the amount of time that the calling functions
think have passed.
However, the interval returned by account_other_time() is NOT rounded down
to the nearest jiffy, while the base interval in get_vtime_delta() it is
subtracted from is, so the max cputime limit is required to avoid underflow.
This patch fixes the regression by limiting the account_other_time() from
get_vtime_delta() to avoid underflow, and lets the other three call sites
(in account_other_time() and steal_account_process_time()) account however
much steal time the host told us elapsed.
Suggested-by: Rik van Riel <riel@redhat.com>
Suggested-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Reviewed-by: Rik van Riel <riel@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Radim Krcmar <rkrcmar@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kvm@vger.kernel.org
Link: http://lkml.kernel.org/r/1471399546-4069-1-git-send-email-wanpeng.li@hotmail.com
[ Improved the changelog. ]
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Peter Zijlstra [Mon, 15 Aug 2016 16:38:42 +0000 (18:38 +0200)]
sched/cputime: Fix NO_HZ_FULL getrusage() monotonicity regression
Mike reports:
Roughly 10% of the time, ltp testcase getrusage04 fails:
getrusage04 0 TINFO : Expected timers granularity is 4000 us
getrusage04 0 TINFO : Using 1 as multiply factor for max [us]time increment (1000+4000us)!
getrusage04 0 TINFO : utime: 0us; stime: 179us
getrusage04 0 TINFO : utime: 3751us; stime: 0us
getrusage04 1 TFAIL : getrusage04.c:133: stime increased > 5000us:
And tracked it down to the case where the task simply doesn't get
_any_ [us]time ticks.
Update the code to assume all rtime is utime when we lack information,
thus ensuring a task that elides the tick gets time accounted.
Reported-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Tested-by: Mike Galbraith <umgwanakikbuti@gmail.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Fredrik Markstrom <fredrik.markstrom@gmail.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Radim <rkrcmar@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Cc: stable@vger.kernel.org # 4.3+
Fixes:
9d7fb0427648 ("sched/cputime: Guarantee stime + utime == rtime")
Signed-off-by: Ingo Molnar <mingo@kernel.org>
David Carrillo-Cisneros [Wed, 17 Aug 2016 20:55:04 +0000 (13:55 -0700)]
perf/core: Check return value of the perf_event_read() IPI
The call to smp_call_function_single in perf_event_read() may fail if
an invalid or not online CPU index is passed. Warn user if such bug is
present and return error.
Signed-off-by: David Carrillo-Cisneros <davidcc@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Kan Liang <kan.liang@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul Turner <pjt@google.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vegard Nossum <vegard.nossum@gmail.com>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1471467307-61171-2-git-send-email-davidcc@google.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Mathieu Poirier [Mon, 18 Jul 2016 16:43:07 +0000 (10:43 -0600)]
perf/core: Enable mapping of the stop filters
At this time the perf_addr_filter_needs_mmap() function will _not_
return true on a user space 'stop' filter. But stop filters need
exactly the same kind of mapping that range and start filters get.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1468860187-318-4-git-send-email-mathieu.poirier@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Mathieu Poirier [Mon, 18 Jul 2016 16:43:06 +0000 (10:43 -0600)]
perf/core: Update filters only on executable mmap
Function perf_event_mmap() is called by the MM subsystem each time
part of a binary is loaded in memory. There can be several mapping
for a binary, many times unrelated to the code section.
Each time a section of a binary is mapped address filters are
updated, event when the map doesn't pertain to the code section.
The end result is that filters are configured based on the last map
event that was received rather than the last mapping of the code
segment.
For example if we have an executable 'main' that calls library
'libcstest.so.1.0', and that we want to collect traces on code
that is in that library. The perf cmd line for this scenario
would be:
perf record -e cs_etm// --filter 'filter 0x72c/0x40@/opt/lib/libcstest.so.1.0' --per-thread ./main
Resulting in binaries being mapped this way:
root@linaro-nano:~# cat /proc/1950/maps
00400000-
00401000 r-xp
00000000 08:02 33169 /home/linaro/main
00410000-
00411000 r--p
00000000 08:02 33169 /home/linaro/main
00411000-
00412000 rw-p
00001000 08:02 33169 /home/linaro/main
7fa2464000-
7fa2474000 rw-p
00000000 00:00 0
7fa2474000-
7fa25a4000 r-xp
00000000 08:02 543 /lib/aarch64-linux-gnu/libc-2.21.so
7fa25a4000-
7fa25b3000 ---p
00130000 08:02 543 /lib/aarch64-linux-gnu/libc-2.21.so
7fa25b3000-
7fa25b7000 r--p
0012f000 08:02 543 /lib/aarch64-linux-gnu/libc-2.21.so
7fa25b7000-
7fa25b9000 rw-p
00133000 08:02 543 /lib/aarch64-linux-gnu/libc-2.21.so
7fa25b9000-
7fa25bd000 rw-p
00000000 00:00 0
7fa25bd000-
7fa25be000 r-xp
00000000 08:02 38308 /opt/lib/libcstest.so.1.0
7fa25be000-
7fa25cd000 ---p
00001000 08:02 38308 /opt/lib/libcstest.so.1.0
7fa25cd000-
7fa25ce000 r--p
00000000 08:02 38308 /opt/lib/libcstest.so.1.0
7fa25ce000-
7fa25cf000 rw-p
00001000 08:02 38308 /opt/lib/libcstest.so.1.0
7fa25cf000-
7fa25eb000 r-xp
00000000 08:02 574 /lib/aarch64-linux-gnu/ld-2.21.so
7fa25ef000-
7fa25f2000 rw-p
00000000 00:00 0
7fa25f7000-
7fa25f9000 rw-p
00000000 00:00 0
7fa25f9000-
7fa25fa000 r--p
00000000 00:00 0 [vvar]
7fa25fa000-
7fa25fb000 r-xp
00000000 00:00 0 [vdso]
7fa25fb000-
7fa25fc000 r--p
0001c000 08:02 574 /lib/aarch64-linux-gnu/ld-2.21.so
7fa25fc000-
7fa25fe000 rw-p
0001d000 08:02 574 /lib/aarch64-linux-gnu/ld-2.21.so
7ff2ea8000-
7ff2ec9000 rw-p
00000000 00:00 0 [stack]
root@linaro-nano:~#
Before 'main()' can execute 'libcstest.so.1.0' has to be loaded in
memory. Once that has been done perf_event_mmap() has been called
4 times, with the last map starting at address 0x7fa25ce000 and
the address filter configured to start filtering when the
IP has passed over address 0x0x7fa25ce72c (0x7fa25ce000 + 0x72c).
But that is wrong since the code segment for library 'libcstest.so.1.0'
as been mapped at 0x7fa25bd000, resulting in traces not being
collected.
This patch corrects the situation by requesting that address
filters be updated only if the mapped event is for a code
segment.
Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vince Weaver <vincent.weaver@maine.edu>
Link: http://lkml.kernel.org/r/1468860187-318-3-git-send-email-mathieu.poirier@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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