Chuck Ebbert [Sat, 20 Sep 2014 15:17:51 +0000 (10:17 -0500)]
sched: Fix end_of_stack() and location of stack canary for architectures using CONFIG_STACK_GROWSUP
Aaron Tomlin recently posted patches [1] to enable checking the
stack canary on every task switch. Looking at the canary code, I
realized that every arch (except ia64, which adds some space for
register spill above the stack) shares a definition of
end_of_stack() that makes it the first long after the
threadinfo.
For stacks that grow down, this low address is correct because
the stack starts at the end of the thread area and grows toward
lower addresses. However, for stacks that grow up, toward higher
addresses, this is wrong. (The stack actually grows away from
the canary.) On these archs end_of_stack() should return the
address of the last long, at the highest possible address for the stack.
[1] http://lkml.org/lkml/2014/9/12/293
Signed-off-by: Chuck Ebbert <cebbert.lkml@gmail.com>
Link: http://lkml.kernel.org/r/20140920101751.6c5166b6@as
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: James Hogan <james.hogan@imgtec.com> [metag]
Acked-by: James Hogan <james.hogan@imgtec.com>
Acked-by: Aaron Tomlin <atomlin@redhat.com>
Linus Torvalds [Fri, 19 Sep 2014 20:10:53 +0000 (13:10 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"I've got a revert to fix a regression with btrfs device registration,
and Filipe has part two of his fsync fix from last week"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Revert "Btrfs: device_list_add() should not update list when mounted"
Btrfs: set inode's logged_trans/last_log_commit after ranged fsync
Linus Torvalds [Fri, 19 Sep 2014 20:07:49 +0000 (13:07 -0700)]
Merge tag 'nfs-for-3.17-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust:
"Highligts:
- fix an Oops in nfs4_open_and_get_state
- fix an Oops in the nfs4_state_manager
- fix another bug in the close/open_downgrade code"
* tag 'nfs-for-3.17-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv4: Fix another bug in the close/open_downgrade code
NFSv4: nfs4_state_manager() vs. nfs_server_remove_lists()
NFS: remove BUG possibility in nfs4_open_and_get_state
Linus Torvalds [Fri, 19 Sep 2014 17:50:30 +0000 (10:50 -0700)]
Merge tag 'pci-v3.17-fixes-2' of git://git./linux/kernel/git/helgaas/pci
Pull PCI fixes from Bjorn Helgaas:
"These fix:
- Boot video device detection on dual-GPU Apple systems
- Hotplug fiascos on VGA switcheroo with radeon & nouveau drivers
- Boot hang on Freescale i.MX6 systems
- Excessive "no hotplug settings from platform" warnings
In particular:
Enumeration
- Don't default exclusively to first video device (Bruno Prémont)
PCI device hotplug
- Remove "no hotplug settings from platform" warning (Bjorn Helgaas)
- Add pci_ignore_hotplug() for VGA switcheroo (Bjorn Helgaas)
Freescale i.MX6
- Put LTSSM in "Detect" state before disabling (Lucas Stach)"
* tag 'pci-v3.17-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci:
vgaarb: Drop obsolete #ifndef
vgaarb: Don't default exclusively to first video device with mem+io
ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug()
PCI: Remove "no hotplug settings from platform" warning
PCI: Add pci_ignore_hotplug() to ignore hotplug events for a device
PCI: imx6: Put LTSSM in "Detect" state before disabling it
MAINTAINERS: Add Lucas Stach as co-maintainer for i.MX6 PCI driver
Linus Torvalds [Fri, 19 Sep 2014 17:46:48 +0000 (10:46 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"This is a set of three fixes.
One represents a nasty shared tag map regression (another inverted
condition) caused by recent SCSI MQ patches, one is a longstanding
potential buffer overrun in the iscsi data buffer and the final one is
a use after free for the rare bidirectional commands"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
[SCSI] fix for bidi use after free
[SCSI] fix regression that accidentally disabled block-based tcq
[SCSI] libiscsi: fix potential buffer overrun in __iscsi_conn_send_pdu
Linus Torvalds [Fri, 19 Sep 2014 17:31:36 +0000 (10:31 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull perf fixes from Ingo Molnar:
"Two kernel side fixes: a kprobes fix and a perf_remove_from_context()
fix (which does not yet fix the migration bug which is WIP)"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Fix a race condition in perf_remove_from_context()
kprobes/x86: Free 'optinsn' cache when range check fails
Linus Torvalds [Fri, 19 Sep 2014 16:07:47 +0000 (09:07 -0700)]
Merge branch 'x86-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar:
"Misc fixes:
EFI fixes, a build fix, a page table dumping (debug) fix and a clang
build fix"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
efi/arm64: Fix fdt-related memory reservation
x86/mm: Apply the section attribute to the variable, not its type
x86/efi: Fixup GOT in all boot code paths
x86/efi: Only load initrd above 4g on second try
x86-64, ptdump: Mark espfix area only if existent
x86, irq: Fix build error caused by
9eabc99a635a77cbf09
Linus Torvalds [Fri, 19 Sep 2014 16:06:39 +0000 (09:06 -0700)]
Merge branch 'upstream' of git://git.linux-mips.org/ralf/upstream-linus
Pull MIPS fixes from Ralf Baechle:
"A fair number of build fixes for various configurations.
Fixes to BPF, and the BCM47xx platform code, a preemption fix for the
Loongson core, a syscall auditing fix, wire up the new getrandom and
memfd_create. Several patches for EVA"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (30 commits)
MIPS: SmartMIPS: Disable assembler warnings
MIPS: Move CPU topology macros to topology.h
MIPS: Wire up new syscalls getrandom and memfd_create.
MIPS: Fix a warning for virt_to_page
arch/mips/net/bpf_jit.c: fix failure check
MIPS: COP2: CPP macro safety fixes.
MIPS: Kconfig: Select SMP symbols for CMP
MIPS: ZBOOT: add missing <linux/string.h> include
MIPS: IP28: Fix/clean spaces.h
MIPS: IP28: Select correct L1_CACHE_SHIFT
MIPS: BCM63xx: delete double assignment
MIPS: Spelling s/confugrations/configurations/
MIPS: OCTEON: make get_system_type() thread-safe
MIPS: CPS: Initialize EVA before bringing up VPEs from secondary cores
MIPS: Malta: EVA: Rename 'eva_entry' to 'platform_eva_init'
MIPS: EVA: Add new EVA header
MIPS: scall64-o32: Fix indirect syscall detection
MIPS: syscall: Fix AUDIT value for O32 processes on MIPS64
MIPS: Loongson: Fix COP2 usage for preemptible kernel
MIPS: NL: Fix nlm_xlp_defconfig build error
...
Daniel Gryniewicz [Tue, 16 Sep 2014 14:41:13 +0000 (10:41 -0400)]
[SCSI] fix for bidi use after free
When ending a bi-directionional SCSI request, blk_finish_request()
cleans up and frees the request, but scsi_release_bidi_buffers() tries
to indirect through the request to find it's data buffers. This causes
a panic due to a null pointer dereference.
Move the call to scsi_release_bidi_buffers() before the call to
blk_finish_request().
Signed-off-by: Daniel Gryniewicz <dang@linuxbox.com>
Reviewed-by: Webb Scales <webbnh@hp.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Christoph Hellwig [Fri, 12 Sep 2014 23:00:32 +0000 (16:00 -0700)]
[SCSI] fix regression that accidentally disabled block-based tcq
The scsi blk-mq support accidentally flipped a conditional, which lead to
never enabling block based tcq when using the legacy request path.
Fixes: d285203cf647d7c9 scsi: add support for a blk-mq based I/O path.
Reported-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Mike Christie [Wed, 3 Sep 2014 05:00:39 +0000 (00:00 -0500)]
[SCSI] libiscsi: fix potential buffer overrun in __iscsi_conn_send_pdu
This patches fixes a potential buffer overrun in __iscsi_conn_send_pdu.
This function is used by iscsi drivers and userspace to send iscsi PDUs/
commands. For login commands, we have a set buffer size. For all other
commands we do not support data buffers.
This was reported by Dan Carpenter here:
http://www.spinics.net/lists/linux-scsi/msg66838.html
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Reviewed-by: Sagi Grimberg <sagig@mellanox.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: stable@vger.kernel.org
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Bjorn Helgaas [Fri, 19 Sep 2014 05:05:06 +0000 (23:05 -0600)]
Merge branch 'pci/vga'; commit '
6a73336bde29' into for-linus
* pci/vga:
vgaarb: Drop obsolete #ifndef
vgaarb: Don't default exclusively to first video device with mem+io
* commit '
6a73336bde29':
PCI: Remove "no hotplug settings from platform" warning
Linus Torvalds [Thu, 18 Sep 2014 18:10:35 +0000 (11:10 -0700)]
Merge branch 'for-linus' of git://git.samba.org/sfrench/cifs-2.6
Pull cifs/smb3 fixes from Steve French:
"Fixes for problems found during testing and debugging at the SMB3
storage test event (plugfest) this week"
* 'for-linus' of git://git.samba.org/sfrench/cifs-2.6:
Fix mfsymlinks file size check
Update version number displayed by modinfo for cifs.ko
cifs: remove dead code
Revert "cifs: No need to send SIGKILL to demux_thread during umount"
[SMB3] Fix oops when creating symlinks on smb3
[CIFS] Fix setting time before epoch (negative time values)
Linus Torvalds [Thu, 18 Sep 2014 17:45:37 +0000 (10:45 -0700)]
Merge tag 'sound-3.17-rc6' of git://git./linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"All small fixes in random various drivers, mostly for ASoC at this
time, which look reasonable for a high rc number"
* tag 'sound-3.17-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: rockchip-i2s: dt: swap tx and rx channed request number in example
ASoC: rockchip-i2s: fix registers' property of rockchip i2s controller
ASoC: rockchip-i2s: fix master mode set bit error
ASoC: cs4265: Fix register address to set the proper data type.
ALSA: hda - Fix invalid pin powermap without jack detection
ASoC: soc-pcm: fix dpcm_path_get error handling
ASoC: samsung-i2s: Check secondary DAI exists before referencing
ASoC: Update email id of the author
ASoC: dwc: Update email id of the author
ASoC: davinci-mcasp: Correct rx format unit configuration
ASoC: tlv320aic31xx: Fix 24bit samples with I2S format and 12MHz mclk
Krzysztof Hałasa [Thu, 18 Sep 2014 13:12:02 +0000 (15:12 +0200)]
Fix unbalanced mutex in dma_pool_create().
dma_pool_create() needs to unlock the mutex in error case. The bug was
introduced in the 3.16 by commit
cc6b664aa26d ("mm/dmapool.c: remove
redundant NULL check for dev in dma_pool_create()")/
Signed-off-by: Krzysztof Hałasa <khc@piap.pl>
Cc: stable@vger.kernel.org # v3.16
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Thu, 18 Sep 2014 17:34:54 +0000 (10:34 -0700)]
Merge tag 'regulator-v3.17-rc5' of git://git./linux/kernel/git/broonie/regulator
Pull regulator fix from Mark Brown:
"Fix some leaked OF node references in regulator drivers that have been
left over following a fix on a fix to the reference counting"
* tag 'regulator-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: remove unnecessary of_node_get() to parent
Linus Torvalds [Thu, 18 Sep 2014 17:33:46 +0000 (10:33 -0700)]
Merge tag 'spi-v3.17-rc5' of git://git./linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few driver specific fixes for v3.17:
- Fix davinci so that GPIO chip selects work with deferred probe of
GPIOs (which could happen in production depending on kernel config)
plus one incremental stylistic fix to that.
- Several fixes for the newly introduced rockchip driver that came up
in wider testing of the device.
- A couple of small things in the sirf driver, one bug that would
stop DMA transfers working and another update to follow the
documented procedure in the datasheet.
- Fix some memory leaks with devm_kzalloc() being used outside of the
device bind path"
* tag 'spi-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: davinci: remove empty function davinci_spi_cleanup
spi: davinci: request cs_gpio's from probe
spi/pl022: Fix error message
spi/rockchip: Mark DMA as optional
spi/rockchip: Don't warn if SPI is busy but disabled
spi/rockchip: Fix the wait_for_idle() timeout
spi: sirf: add fifo reset/start for cmd transfer
spi: sirf: enable RX_IO_DMA_INT interrupt
spi: dw: Don't use devm_kzalloc in master->setup callback
spi: fsl: Don't use devm_kzalloc in master->setup callback
Trond Myklebust [Thu, 18 Sep 2014 15:51:32 +0000 (11:51 -0400)]
NFSv4: Fix another bug in the close/open_downgrade code
James Drew reports another bug whereby the NFS client is now sending
an OPEN_DOWNGRADE in a situation where it should really have sent a
CLOSE: the client is opening the file for O_RDWR, but then trying to
do a downgrade to O_RDONLY, which is not allowed by the NFSv4 spec.
Reported-by: James Drews <drews@engr.wisc.edu>
Link: http://lkml.kernel.org/r/541AD7E5.8020409@engr.wisc.edu
Fixes: aee7af356e15 (NFSv4: Fix problems with close in the presence...)
Cc: stable@vger.kernel.org # 2.6.33+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Steve Dickson [Thu, 18 Sep 2014 13:13:17 +0000 (09:13 -0400)]
NFSv4: nfs4_state_manager() vs. nfs_server_remove_lists()
There is a race between nfs4_state_manager() and
nfs_server_remove_lists() that happens during a nfsv3 mount.
The v3 mount notices there is already a supper block so
nfs_server_remove_lists() called which uses the nfs_client_lock
spin lock to synchronize access to the client list.
At the same time nfs4_state_manager() is running through
the client list looking for work to do, using the same
lock. When nfs4_state_manager() wins the race to the
list, a v3 client pointer is found and not ignored
properly which causes the panic.
Moving some protocol checks before the state checking
avoids the panic.
CC: Stable Tree <stable@vger.kernel.org>
Signed-off-by: Steve Dickson <steved@redhat.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Chris Mason [Thu, 18 Sep 2014 14:49:05 +0000 (07:49 -0700)]
Revert "Btrfs: device_list_add() should not update list when mounted"
This reverts commit
b96de000bc8bc9688b3a2abea4332bd57648a49f.
This commit is triggering failures to mount by subvolume id in some
configurations. The main problem is how many different ways this
scanning function is used, both for scanning while mounted and
unmounted. A proper cleanup is too big for late rcs.
For now, just revert the commit and we'll put a better fix into a later
merge window.
Signed-off-by: Chris Mason <clm@fb.com>
Paul Gortmaker [Wed, 17 Sep 2014 14:57:45 +0000 (10:57 -0400)]
Revert "init: make rootdelay=N consistent with rootwait behaviour"
This reverts commit
4dfe694f616e00e6fd83e5bbcd7a3c4d7113493d.
In that, we did:
Here we move the rootdelay code to be right beside the rootwait code, so
that their behaviour is consistent.
...which is fine, but in hindsight, perhaps moving the rootwait to be
beside the rootdelay would have been better. We also indicated:
It should be noted that in doing so, the actions based on the
saved_root_name[0] and initrd_load() were previously put on hold by
rootdelay=N and now currently will not be delayed. However, I think
consistent behaviour is more important than matching historical behaviour
of delaying the above two operations.
But Pavel reported an instance where an ARM target with root on MMC
was failing to mount root, and Russell diagnosed it to the fact that
the call to set ROOT_DEV within the saved_root_name[0] processing
block mentioned above was no longer being delayed.
Rather than moving both wait clauses to the original position of
rootdelay and risking unearthing other possible corner case breakage
at this point in time, we simply revert now and we can revisit
trying the alternate/earlier location in another development cycle.
Cc: Pavel Machek <pavel@denx.de>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Markos Chandras [Wed, 16 Jul 2014 13:46:31 +0000 (14:46 +0100)]
MIPS: SmartMIPS: Disable assembler warnings
The kernel code overrides the default ISA as passed by the compiler
in quite a few places. This has unfortunate side effects when smartmips
is enabled leading to hundreds of warnings during build such as:
{standard input}: Assembler messages:
{standard input}:411: Warning: the `smartmips' extension requires MIPS32
revision 1 or greater
{standard input}: Assembler messages:
{standard input}:43: Warning: the 64-bit MIPS architecture does not support the
`smartmips' extension
[...]
Until the kernel code is fixed properly (if possible), disable all the
assembler warning messages to make the build logs readable again.
This has no runtime side effects but it makes it easier to spot
more critical warnings and problems during build.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7356/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Mark Brown [Tue, 16 Sep 2014 23:20:19 +0000 (16:20 -0700)]
Merge remote-tracking branches 'spi/fix/davinci', 'spi/fix/dw', 'spi/fix/fsl', 'spi/fix/pl022', 'spi/fix/rockchip' and 'spi/fix/sirf' into spi-linus
Filipe Manana [Thu, 11 Sep 2014 20:22:14 +0000 (21:22 +0100)]
Btrfs: set inode's logged_trans/last_log_commit after ranged fsync
When a ranged fsync finishes if there are still extent maps in the modified
list, still set the inode's logged_trans and last_log_commit. This is important
in case an inode is fsync'ed and unlinked in the same transaction, to ensure its
inode ref gets deleted from the log and the respective dentries in its parent
are deleted too from the log (if the parent directory was fsync'ed in the same
transaction).
Instead make btrfs_inode_in_log() return false if the list of modified extent
maps isn't empty.
This is an incremental on top of the v4 version of the patch:
"Btrfs: fix fsync data loss after a ranged fsync"
which was added to its v5, but didn't make it on time.
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Signed-off-by: Chris Mason <clm@fb.com>
Bruno Prémont [Sun, 24 Aug 2014 21:13:15 +0000 (23:13 +0200)]
vgaarb: Drop obsolete #ifndef
Commit
20cde694027e ("x86, ia64: Move EFI_FB vga_default_device()
initialization to pci_vga_fixup()") moved boot video device detection from
efifb to x86 and ia64 pci/fixup.c.
Remove the left-over #ifndef check that will always match since the
corresponding arch-specific define is gone with above patch.
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Matthew Garrett <matthew.garrett@nebula.com>
Bruno Prémont [Sun, 24 Aug 2014 21:09:53 +0000 (23:09 +0200)]
vgaarb: Don't default exclusively to first video device with mem+io
Commit
20cde694027e ("x86, ia64: Move EFI_FB vga_default_device()
initialization to pci_vga_fixup()") moved boot video device detection from
efifb to x86 and ia64 pci/fixup.c.
For dual-GPU Apple computers above change represents a regression as code
in efifb did forcefully override vga_default_device while the merge did not
(vgaarb happens prior to PCI fixup).
To improve on initial device selection by vgaarb (it cannot know if PCI
device not behind bridges see/decode legacy VGA I/O or not), move the
screen_info based check from pci_video_fixup() to vgaarb's init function and
use it to refine/override decision taken while adding the individual PCI
VGA devices. This way PCI fixup has no reason to adjust vga_default_device
anymore but can depend on its value for flagging shadowed VBIOS.
This has the nice benefit of removing duplicated code but does introduce a
#if defined() block in vgaarb. Not all architectures have screen_info and
would cause compile to fail without it.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84461
Reported-and-Tested-By: Andreas Noever <andreas.noever@gmail.com>
Signed-off-by: Bruno Prémont <bonbons@linux-vserver.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: Matthew Garrett <matthew.garrett@nebula.com>
CC: stable@vger.kernel.org # v3.5+
Grygorii Strashko [Tue, 16 Sep 2014 11:14:23 +0000 (14:14 +0300)]
spi: davinci: remove empty function davinci_spi_cleanup
Remove empty function davinci_spi_cleanup().
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Linus Torvalds [Tue, 16 Sep 2014 14:47:04 +0000 (07:47 -0700)]
Merge tag 'gfs2-fixes' of git://git./linux/kernel/git/steve/gfs2-3.0-fixes
Pull gfs2 fixes from Steven Whitehouse:
"Here are a number of small fixes for GFS2.
There is a fix for FIEMAP on large sparse files, a negative dentry
hashing fix, a fix for flock, and a bug fix relating to d_splice_alias
usage.
There are also (patches 1 and 5) a couple of updates which are less
critical, but small and low risk"
* tag 'gfs2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/steve/gfs2-3.0-fixes:
GFS2: fix d_splice_alias() misuses
GFS2: Don't use MAXQUOTAS value
GFS2: Hash the negative dentry during inode lookup
GFS2: Request demote when a "try" flock fails
GFS2: Change maxlen variables to size_t
GFS2: fs/gfs2/super.c: replace seq_printf by seq_puts
James Hogan [Tue, 16 Sep 2014 12:07:35 +0000 (13:07 +0100)]
vfs: workaround gcc <4.6 build error in link_path_walk()
Commit
d6bb3e9075bb ("vfs: simplify and shrink stack frame of
link_path_walk()") introduced build problems with GCC versions older
than 4.6 due to the initialisation of a member of an anonymous union in
struct qstr without enclosing braces.
This hits GCC bug 10676 [1] (which was fixed in GCC 4.6 by [2]), and
causes the following build error:
fs/namei.c: In function 'link_path_walk':
fs/namei.c:1778: error: unknown field 'hash_len' specified in initializer
This is worked around by adding explicit braces.
[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=10676
[2] https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=159206
Fixes: d6bb3e9075bb (vfs: simplify and shrink stack frame of link_path_walk())
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: linux-fsdevel@vger.kernel.org
Cc: linux-metag@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Takashi Iwai [Tue, 16 Sep 2014 14:40:38 +0000 (16:40 +0200)]
Merge tag 'asoc-v3.17-rc4' of git://git./linux/kernel/git/broonie/sound into for-linus
ASoC: Fixes for v3.17
This is mostly driver fixes, the biggest one being the tlv320aic31xx
which is relatively large but simple and device specific. There's a
small fix in the error handling in DPCM too which is relatively minor
error handling fix.
Steve French [Tue, 16 Sep 2014 11:40:25 +0000 (06:40 -0500)]
Fix mfsymlinks file size check
If the mfsymlinks file size has changed (e.g. the file no longer
represents an emulated symlink) we were not returning an error properly.
Signed-off-by: Steve French <smfrench@gmail.com>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
Steve French [Tue, 16 Sep 2014 09:13:31 +0000 (04:13 -0500)]
Update version number displayed by modinfo for cifs.ko
Update cifs.ko version to 2.05
Signed-off-by: Steve French <smfrench@gmail.com>w
Arnd Bergmann [Mon, 8 Sep 2014 15:20:56 +0000 (17:20 +0200)]
cifs: remove dead code
cifs provides two dummy functions 'sess_auth_lanman' and
'sess_auth_kerberos' for the case in which the respective
features are not defined. However, the caller is also under
an #ifdef, so we just get warnings about unused code:
fs/cifs/sess.c:1109:1: warning: 'sess_auth_kerberos' defined but not used [-Wunused-function]
sess_auth_kerberos(struct sess_data *sess_data)
Removing the dead functions gets rid of the warnings without
any downsides that I can see.
(Yalin Wang reported the identical problem and fix so added him)
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Yalin Wang <yalin.wang@sonymobile.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Steve French [Tue, 16 Sep 2014 09:16:19 +0000 (04:16 -0500)]
Revert "cifs: No need to send SIGKILL to demux_thread during umount"
This reverts commit
52a36244443eabb594bdb63622ff2dd7a083f0e2.
Causes rmmod to fail for at least 7 seconds after unmount which
makes automated testing a little harder when reloading cifs.ko
between test runs.
Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
CC: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Linus Torvalds [Tue, 16 Sep 2014 03:35:32 +0000 (20:35 -0700)]
Merge tag 'fixes-for-linus' of git://git./linux/kernel/git/rusty/linux
Pull virtio fixes from Rusty Russell:
"virtio-rng corner case fixes, with cc:stable.
Survived a few days in linux-next"
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux:
virtio-rng: skip reading when we start to remove the device
virtio-rng: fix stuck of hot-unplugging busy device
Linus Torvalds [Mon, 15 Sep 2014 23:20:56 +0000 (16:20 -0700)]
Merge tag 'regmap-v3.17-rc5' of git://git./linux/kernel/git/broonie/regmap
Pull regmap fix from Mark Brown:
"Fix registers file in debugfs
Ensure that the mode reported for the registers file in debugfs is
accurate by marking it as read only when the define to enable writes
has not been set. This is on the edge of being a bug fix but it's
debugfs and it makes it much easier for users to spot what's going
wrong when they forget to enable writeability"
* tag 'regmap-v3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: Fix debugfs-file 'registers' mode
Linus Torvalds [Mon, 15 Sep 2014 22:12:01 +0000 (15:12 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/dtor/input
Pull input updates from Dmitry Torokhov:
"A few quirks for i8042/AT keyboards and a small device tree doc fix
for Atmel Touchscreens"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
Input: atmel_mxt_ts - fix merge in DT documentation
Input: i8042 - also set the firmware id for MUXed ports
Input: i8042 - add nomux quirk for Avatar AVIU-145A6
Input: i8042 - add Fujitsu U574 to no_timeout dmi table
Input: atkbd - do not try 'deactivate' keyboard on any LG laptops
Mark Brown [Mon, 15 Sep 2014 22:05:34 +0000 (15:05 -0700)]
Merge remote-tracking branches 'asoc/fix/cs4265', 'asoc/fix/davinci', 'asoc/fix/rockchip', 'asoc/fix/samsung' and 'asoc/fix/tlv320aic31xx' into asoc-linus
Mark Brown [Mon, 15 Sep 2014 22:05:33 +0000 (15:05 -0700)]
Merge remote-tracking branch 'asoc/fix/pcm' into asoc-linus
Mark Brown [Mon, 15 Sep 2014 22:05:33 +0000 (15:05 -0700)]
Merge remote-tracking branch 'asoc/fix/core' into asoc-linus
Bjorn Helgaas [Mon, 15 Sep 2014 19:18:36 +0000 (13:18 -0600)]
Merge branch 'pci/hotplug-vga' into for-linus
* pci/hotplug-vga:
ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug()
PCI: Add pci_ignore_hotplug() to ignore hotplug events for a device
Bjorn Helgaas [Wed, 10 Sep 2014 21:30:08 +0000 (15:30 -0600)]
ACPIPHP / radeon / nouveau: Remove acpi_bus_no_hotplug()
Revert parts of
f244d8b623da ("ACPIPHP / radeon / nouveau: Fix VGA
switcheroo problem related to hotplug").
A previous commit
5493b31f0b55 ("PCI: Add pci_ignore_hotplug() to ignore
hotplug events for a device") added equivalent functionality implemented in
a different way for both acpiphp and pciehp.
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Dave Airlie <airlied@redhat.com>
Acked-by: Rajat Jain <rajatxjain@gmail.com>
Tony Luck [Mon, 15 Sep 2014 16:32:23 +0000 (09:32 -0700)]
ia64: Fix syscall number for memfd_create
Cut & paste typo from the line above.
Reported-by: Ben Hutchings <ben@decadent.org.uk>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 15 Sep 2014 17:51:07 +0000 (10:51 -0700)]
vfs: simplify and shrink stack frame of link_path_walk()
Commit
9226b5b440f2 ("vfs: avoid non-forwarding large load after small
store in path lookup") made link_path_walk() always access the
"hash_len" field as a single 64-bit entity, in order to avoid mixed size
accesses to the members.
However, what I didn't notice was that that effectively means that the
whole "struct qstr this" is now basically redundant. We already
explicitly track the "const char *name", and if we just use "u64
hash_len" instead of "long len", there is nothing else left of the
"struct qstr".
We do end up wanting the "struct qstr" if we have a filesystem with a
"d_hash()" function, but that's a rare case, and we might as well then
just squirrell away the name and hash_len at that point.
End result: fewer live variables in the loop, a smaller stack frame, and
better code generation. And we don't need to pass in pointers variables
to helper functions any more, because the return value contains all the
relevant information. So this removes more lines than it adds, and the
source code is clearer too.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Mon, 15 Sep 2014 14:23:21 +0000 (07:23 -0700)]
Merge git://git./linux/kernel/git/herbert/crypto-2.6
Pull crypto fixes from Herbert Xu:
"This fixes the newly added drbg generator so that it actually works on
32-bit machines. Previously the code was only tested on 64-bit and on
32-bit it overflowed and simply doesn't work"
* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: drbg - remove check for uninitialized DRBG handle
crypto: drbg - backport "fix maximum value checks on 32 bit systems"
Steve French [Mon, 15 Sep 2014 04:27:09 +0000 (23:27 -0500)]
[SMB3] Fix oops when creating symlinks on smb3
We were not checking for symlink support properly for SMB2/SMB3
mounts so could oops when mounted with mfsymlinks when try
to create symlink when mfsymlinks on smb2/smb3 mounts
Signed-off-by: Steve French <smfrench@gmail.com>
Cc: <stable@vger.kernel.org> # 3.14+
CC: Sachin Prabhu <sprabhu@redhat.com>
Linus Torvalds [Mon, 15 Sep 2014 00:50:12 +0000 (17:50 -0700)]
Linux 3.17-rc5
Linus Torvalds [Mon, 15 Sep 2014 00:37:36 +0000 (17:37 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/viro/vfs
Pull vfs fixes from Al Viro:
"double iput() on failure exit in lustre, racy removal of spliced
dentries from ->s_anon in __d_materialise_dentry() plus a bunch of
assorted RCU pathwalk fixes"
The RCU pathwalk fixes end up fixing a couple of cases where we
incorrectly dropped out of RCU walking, due to incorrect initialization
and testing of the sequence locks in some corner cases. Since dropping
out of RCU walk mode forces the slow locked accesses, those corner cases
slowed down quite dramatically.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
be careful with nd->inode in path_init() and follow_dotdot_rcu()
don't bugger nd->seq on set_root_rcu() from follow_dotdot_rcu()
fix bogus read_seqretry() checks introduced in
b37199e
move the call of __d_drop(anon) into __d_materialise_unique(dentry, anon)
[fix] lustre: d_make_root() does iput() on dentry allocation failure
Linus Torvalds [Mon, 15 Sep 2014 00:28:32 +0000 (17:28 -0700)]
vfs: avoid non-forwarding large load after small store in path lookup
The performance regression that Josef Bacik reported in the pathname
lookup (see commit
99d263d4c5b2 "vfs: fix bad hashing of dentries") made
me look at performance stability of the dcache code, just to verify that
the problem was actually fixed. That turned up a few other problems in
this area.
There are a few cases where we exit RCU lookup mode and go to the slow
serializing case when we shouldn't, Al has fixed those and they'll come
in with the next VFS pull.
But my performance verification also shows that link_path_walk() turns
out to have a very unfortunate 32-bit store of the length and hash of
the name we look up, followed by a 64-bit read of the combined hash_len
field. That screws up the processor store to load forwarding, causing
an unnecessary hickup in this critical routine.
It's caused by the ugly calling convention for the "hash_name()"
function, and easily fixed by just making hash_name() fill in the whole
'struct qstr' rather than passing it a pointer to just the hash value.
With that, the profile for this function looks much smoother.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Steve French [Sun, 14 Sep 2014 22:06:36 +0000 (17:06 -0500)]
[CIFS] Fix setting time before epoch (negative time values)
xfstest generic/258 sets the time on a file to a negative value
(before 1970) which fails since do_div can not handle negative
numbers. In addition 'normal' division of 64 bit values does
not build on 32 bit arch so have to workaround this by special
casing negative values in cifs_NTtimeToUnix
Samba server also has a bug with this (see samba bugzilla 7771)
but it works to Windows server.
Signed-off-by: Steve French <smfrench@gmail.com>
Linus Torvalds [Sun, 14 Sep 2014 19:28:08 +0000 (12:28 -0700)]
Merge branch 'parisc-3.17-1' of git://git./linux/kernel/git/deller/parisc-linux
Pull parisc updates from Helge Deller:
"The most important patch is a new Light Weigth Syscall (LWS) for 8,
16, 32 and 64 bit atomic CAS operations which is required in order to
be able to implement the atomic gcc builtins on our platform.
Other than that, we wire up the seccomp, getrandom and memfd_create
syscalls, fixes a minor off-by-one bug and a wrong printk string"
* 'parisc-3.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Implement new LWS CAS supporting 64 bit operations.
parisc: Wire up seccomp, getrandom and memfd_create syscalls
parisc: dino: fix %d confusingly prefixed with 0x in format string
parisc: sys_hpux: NUL terminator is one past the end
Al Viro [Sun, 14 Sep 2014 01:59:43 +0000 (21:59 -0400)]
be careful with nd->inode in path_init() and follow_dotdot_rcu()
in the former we simply check if dentry is still valid after picking
its ->d_inode; in the latter we fetch ->d_inode in the same places
where we fetch dentry and its ->d_seq, under the same checks.
Cc: stable@vger.kernel.org # 2.6.38+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Sun, 14 Sep 2014 01:55:46 +0000 (21:55 -0400)]
don't bugger nd->seq on set_root_rcu() from follow_dotdot_rcu()
return the value instead, and have path_init() do the assignment. Broken by
"vfs: Fix absolute RCU path walk failures due to uninitialized seq number",
which was Cc-stable with 2.6.38+ as destination. This one should go where
it went.
To avoid dummy value returned in case when root is already set (it would do
no harm, actually, since the only caller that doesn't ignore the return value
is guaranteed to have nd->root *not* set, but it's more obvious that way),
lift the check into callers. And do the same to set_root(), to keep them
in sync.
Cc: stable@vger.kernel.org # 2.6.38+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Sun, 14 Sep 2014 17:54:12 +0000 (10:54 -0700)]
Merge tag 'ntb-3.17' of git://github.com/jonmason/ntb
Pull ntb driver bugfixes from Jon Mason:
"NTB driver fixes for queue spread and buffer alignment. Also, update
to MAINTAINERS to reflect new e-mail address"
* tag 'ntb-3.17' of git://github.com/jonmason/ntb:
ntb: Add alignment check to meet hardware requirement
MAINTAINERS: update NTB info
NTB: correct the spread of queues over mw's
Linus Torvalds [Sun, 14 Sep 2014 17:37:10 +0000 (10:37 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull ARM irq chip fixes from Thomas Gleixner:
"Another pile of ARM specific irq chip fixlets:
- off by one bugs in the crossbar driver
- missing annotations
- a bunch of "make it compile" updates
I pulled the lot today from Jason, but it has been in -next for at
least a week"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip: gic-v3: Declare rdist as __percpu pointer to __iomem pointer
irqchip: gic: Make gic_default_routable_irq_domain_ops static
irqchip: exynos-combiner: Fix compilation error on ARM64
irqchip: crossbar: Off by one bugs in init
irqchip: gic-v3: Tag all low level accessors __maybe_unused
irqchip: gic-v3: Only define gic_peek_irq() when building SMP
Thomas Gleixner [Sun, 14 Sep 2014 13:19:19 +0000 (15:19 +0200)]
Merge tag 'irqchip-urgent-3.17' of git://git.infradead.org/users/jcooper/linux into irq/urgent
irqchip fixes for v3.17 from Jason Cooper
- GIC/GICV3: Various fixlets
- crossbar: Fix off-by-one bug
- exynos-combiner: Fix arm64 build error
Dave Jiang [Thu, 28 Aug 2014 20:53:02 +0000 (13:53 -0700)]
ntb: Add alignment check to meet hardware requirement
The NTB translate register must have the value to be BAR size aligned.
This alignment check make sure that the DMA memory allocated has the
proper alignment. Another requirement for NTB to function properly with
memory window BAR size greater or equal to 4M is to use the CMA feature
in 3.16 kernel with the appropriate CONFIG_CMA_ALIGNMENT and
CONFIG_CMA_SIZE_MBYTES set.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
Jon Mason [Thu, 19 Jun 2014 17:44:24 +0000 (10:44 -0700)]
MAINTAINERS: update NTB info
Update my contact info to my personal email address and add Dave Jiang.
Signed-off-by: Jon Mason <jon.mason@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Jon Mason [Thu, 19 Jun 2014 17:11:13 +0000 (10:11 -0700)]
NTB: correct the spread of queues over mw's
The detection of an uneven number of queues on the given memory windows
was not correct. The mw_num is zero based and the mod should be
division to spread them evenly over the mw's.
Signed-off-by: Jon Mason <jon.mason@intel.com>
Al Viro [Sun, 14 Sep 2014 01:50:45 +0000 (21:50 -0400)]
fix bogus read_seqretry() checks introduced in
b37199e
read_seqretry() returns true on mismatch, not on match...
Cc: stable@vger.kernel.org # 3.15+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Thu, 11 Sep 2014 22:55:50 +0000 (18:55 -0400)]
move the call of __d_drop(anon) into __d_materialise_unique(dentry, anon)
and lock the right list there
Cc: stable@vger.kernel.org
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Al Viro [Wed, 3 Sep 2014 17:11:09 +0000 (13:11 -0400)]
[fix] lustre: d_make_root() does iput() on dentry allocation failure
double-free is a bad thing
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Sat, 13 Sep 2014 21:22:12 +0000 (14:22 -0700)]
Merge branches 'locking-urgent-for-linus' and 'timers-urgent-for-linus' of git://git./linux/kernel/git/tip/tip
Pull futex and timer fixes from Thomas Gleixner:
"A oneliner bugfix for the jinxed futex code:
- Drop hash bucket lock in the error exit path. I really could slap
myself for intruducing that bug while fixing all the other horror
in that code three month ago ...
and the timer department is not too proud about the following fixes:
- Deal with a long standing rounding bug in the timeval to jiffies
conversion. It's a real issue and this fix fell through the cracks
for quite some time.
- Another round of alarmtimer fixes. Finally this code gets used
more widely and the subtle issues hidden for quite some time are
noticed and fixed. Nothing really exciting, just the itty bitty
details which bite the serious users here and there"
* 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: Unlock hb->lock in futex_wait_requeue_pi() error path
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
alarmtimer: Lock k_itimer during timer callback
alarmtimer: Do not signal SIGEV_NONE timers
alarmtimer: Return relative times in timer_gettime
jiffies: Fix timeval conversion to jiffies
Guy Martin [Fri, 12 Sep 2014 16:02:34 +0000 (18:02 +0200)]
parisc: Implement new LWS CAS supporting 64 bit operations.
The current LWS cas only works correctly for 32bit. The new LWS allows
for CAS operations of variable size.
Signed-off-by: Guy Martin <gmsoft@tuxicoman.be>
Cc: <stable@vger.kernel.org> # 3.13+
Signed-off-by: Helge Deller <deller@gmx.de>
Linus Torvalds [Sat, 13 Sep 2014 18:30:10 +0000 (11:30 -0700)]
vfs: fix bad hashing of dentries
Josef Bacik found a performance regression between 3.2 and 3.10 and
narrowed it down to commit
bfcfaa77bdf0 ("vfs: use 'unsigned long'
accesses for dcache name comparison and hashing"). He reports:
"The test case is essentially
for (i = 0; i <
1000000; i++)
mkdir("a$i");
On xfs on a fio card this goes at about 20k dir/sec with 3.2, and 12k
dir/sec with 3.10. This is because we spend waaaaay more time in
__d_lookup on 3.10 than in 3.2.
The new hashing function for strings is suboptimal for <
sizeof(unsigned long) string names (and hell even > sizeof(unsigned
long) string names that I've tested). I broke out the old hashing
function and the new one into a userspace helper to get real numbers
and this is what I'm getting:
Old hash table had
1000000 entries, 0 dupes, 0 max dupes
New hash table had 12628 entries, 987372 dupes, 900 max dupes
We had 11400 buckets with a p50 of 30 dupes, p90 of 240 dupes, p99 of 567 dupes for the new hash
My test does the hash, and then does the d_hash into a integer pointer
array the same size as the dentry hash table on my system, and then
just increments the value at the address we got to see how many
entries we overlap with.
As you can see the old hash function ended up with all 1 million
entries in their own bucket, whereas the new one they are only
distributed among ~12.5k buckets, which is why we're using so much
more CPU in __d_lookup".
The reason for this hash regression is two-fold:
- On 64-bit architectures the down-mixing of the original 64-bit
word-at-a-time hash into the final 32-bit hash value is very
simplistic and suboptimal, and just adds the two 32-bit parts
together.
In particular, because there is no bit shuffling and the mixing
boundary is also a byte boundary, similar character patterns in the
low and high word easily end up just canceling each other out.
- the old byte-at-a-time hash mixed each byte into the final hash as it
hashed the path component name, resulting in the low bits of the hash
generally being a good source of hash data. That is not true for the
word-at-a-time case, and the hash data is distributed among all the
bits.
The fix is the same in both cases: do a better job of mixing the bits up
and using as much of the hash data as possible. We already have the
"hash_32|64()" functions to do that.
Reported-by: Josef Bacik <jbacik@fb.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Christoph Hellwig <hch@infradead.org>
Cc: Chris Mason <clm@fb.com>
Cc: linux-fsdevel@vger.kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 13 Sep 2014 18:24:03 +0000 (11:24 -0700)]
Make hash_64() use a 64-bit multiply when appropriate
The hash_64() function historically does the multiply by the
GOLDEN_RATIO_PRIME_64 number with explicit shifts and adds, because
unlike the 32-bit case, gcc seems unable to turn the constant multiply
into the more appropriate shift and adds when required.
However, that means that we generate those shifts and adds even when the
architecture has a fast multiplier, and could just do it better in
hardware.
Use the now-cleaned-up CONFIG_ARCH_HAS_FAST_MULTIPLIER (together with
"is it a 64-bit architecture") to decide whether to use an integer
multiply or the explicit sequence of shift/add instructions.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 13 Sep 2014 18:14:53 +0000 (11:14 -0700)]
Make ARCH_HAS_FAST_MULTIPLIER a real config variable
It used to be an ad-hoc hack defined by the x86 version of
<asm/bitops.h> that enabled a couple of library routines to know whether
an integer multiply is faster than repeated shifts and additions.
This just makes it use the real Kconfig system instead, and makes x86
(which was the only architecture that did this) select the option.
NOTE! Even for x86, this really is kind of wrong. If we cared, we would
probably not enable this for builds optimized for netburst (P4), where
shifts-and-adds are generally faster than multiplies. This patch does
*not* change that kind of logic, though, it is purely a syntactic change
with no code changes.
This was triggered by the fact that we have other places that really
want to know "do I want to expand multiples by constants by hand or
not", particularly the hash generation code.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Linus Torvalds [Sat, 13 Sep 2014 17:04:10 +0000 (10:04 -0700)]
Merge tag 'dm-3.17-fix2' of git://git./linux/kernel/git/device-mapper/linux-dm
Pull device mapper fix from Mike Snitzer:
"Fix a race in the DM cache target that caused dirty blocks to be
marked as clean. This could cause no writeback to occur or spurious
dirty block counts"
* tag 'dm-3.17-fix2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm cache: fix race causing dirty blocks to be marked as clean
Jianqun [Sat, 13 Sep 2014 01:04:41 +0000 (09:04 +0800)]
ASoC: rockchip-i2s: dt: swap tx and rx channed request number in example
Reference to RK3288 TRM, fix an error channel id for i2s tx and rx
Table 10-1 DMAC_BUS Request Mapping Table
Req number Source Polarity
0 I2S tx High level
1 I2S rx High level
Tested on RK3288 board.
Signed-off-by: Jianqun <jay.xu@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Linus Torvalds [Sat, 13 Sep 2014 16:39:55 +0000 (09:39 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A small collection of fixes for the current rc series. This contains:
- Two small blk-mq patches from Rob Elliott, cleaning up error case
at init time.
- A fix from Ming Lei, fixing SG merging for blk-mq where
QUEUE_FLAG_SG_NO_MERGE is the default.
- A dev_t minor lifetime fix from Keith, fixing an issue where a
minor might be reused before all references to it were gone.
- Fix from Alan Stern where an unbalanced queue bypass caused SCSI
some headaches when it does a series of add/del on devices without
fully registrering the queue.
- A fix from me for improving the scaling of tag depth in blk-mq if
we are short on memory"
* 'for-linus' of git://git.kernel.dk/linux-block:
blk-mq: scale depth and rq map appropriate if low on memory
Block: fix unbalanced bypass-disable in blk_register_queue
block: Fix dev_t minor allocation lifetime
blk-mq: cleanup after blk_mq_init_rq_map failures
blk-mq: pass along blk_mq_alloc_tag_set return values
blk-merge: fix blk_recount_segments
Jianqun [Sat, 13 Sep 2014 00:42:12 +0000 (08:42 +0800)]
ASoC: rockchip-i2s: fix registers' property of rockchip i2s controller
Reference rockchip I2S controller TRM, modify some registers' property
I2S_FIFOLR: read / write, but not volatile, not precious
I2S_INTSR: read / write
I2S_CLR: volatile, register value will be cleared by read
Test on RK3288 with max98090.
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Jianqun [Sat, 13 Sep 2014 00:41:03 +0000 (08:41 +0800)]
ASoC: rockchip-i2s: fix master mode set bit error
Fix error format set to I2S master or slave mode.
Test on RK3288 board with max98090.
Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Grygorii Strashko [Fri, 12 Sep 2014 14:54:00 +0000 (17:54 +0300)]
spi: davinci: request cs_gpio's from probe
Now CS GPIOs are requested from struct spi_master.setup() callback
and that causes failures when Client SPI device is getting accessed
through SPIDEV driver. The failure happens, because .setup() callback
may be called many times from IOCTL handler and when it's called
second time gpio_request() will fail and return -EBUSY.
Hence, fix it by moving CS GPIOs requesting code in .probe().
Reported-by: Murali Karicheri <m-karicheri2@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Linus Torvalds [Sat, 13 Sep 2014 00:45:27 +0000 (17:45 -0700)]
Merge tag 'stable/for-linus-3.17-b-rc4-arm-tag' of git://git./linux/kernel/git/xen/tip
Pull Xen ARM bugfix from Stefano Stabellini:
"The patches fix the "xen_add_mach_to_phys_entry: cannot add" bug that
has been affecting xen on arm and arm64 guests since 3.16. They
require a few hypervisor side changes that just went in xen-unstable.
A couple of days ago David sent out a pull request with a few other
Xen fixes (it is already in master). Sorry we didn't synchronized
better among us"
* tag 'stable/for-linus-3.17-b-rc4-arm-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
xen/arm: remove mach_to_phys rbtree
xen/arm: reimplement xen_dma_unmap_page & friends
xen/arm: introduce XENFEAT_grant_map_identity
Richard Larocque [Wed, 10 Sep 2014 01:31:05 +0000 (18:31 -0700)]
alarmtimer: Lock k_itimer during timer callback
Locks the k_itimer's it_lock member when handling the alarm timer's
expiry callback.
The regular posix timers defined in posix-timers.c have this lock held
during timout processing because their callbacks are routed through
posix_timer_fn(). The alarm timers follow a different path, so they
ought to grab the lock somewhere else.
Cc: stable@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Sharvil Nanavati <sharvil@google.com>
Signed-off-by: Richard Larocque <rlarocque@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Richard Larocque [Wed, 10 Sep 2014 01:31:04 +0000 (18:31 -0700)]
alarmtimer: Do not signal SIGEV_NONE timers
Avoids sending a signal to alarm timers created with sigev_notify set to
SIGEV_NONE by checking for that special case in the timeout callback.
The regular posix timers avoid sending signals to SIGEV_NONE timers by
not scheduling any callbacks for them in the first place. Although it
would be possible to do something similar for alarm timers, it's simpler
to handle this as a special case in the timeout.
Prior to this patch, the alarm timer would ignore the sigev_notify value
and try to deliver signals to the process anyway. Even worse, the
sanity check for the value of sigev_signo is skipped when SIGEV_NONE was
specified, so the signal number could be bogus. If sigev_signo was an
unitialized value (as it often would be if SIGEV_NONE is used), then
it's hard to predict which signal will be sent.
Cc: stable@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Sharvil Nanavati <sharvil@google.com>
Signed-off-by: Richard Larocque <rlarocque@google.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Richard Larocque [Wed, 10 Sep 2014 01:31:03 +0000 (18:31 -0700)]
alarmtimer: Return relative times in timer_gettime
Returns the time remaining for an alarm timer, rather than the time at
which it is scheduled to expire. If the timer has already expired or it
is not currently scheduled, the it_value's members are set to zero.
This new behavior matches that of the other posix-timers and the POSIX
specifications.
This is a change in user-visible behavior, and may break existing
applications. Hopefully, few users rely on the old incorrect behavior.
Cc: stable@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Sharvil Nanavati <sharvil@google.com>
Signed-off-by: Richard Larocque <rlarocque@google.com>
[jstultz: minor style tweak]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Andrew Hunter [Thu, 4 Sep 2014 21:17:16 +0000 (14:17 -0700)]
jiffies: Fix timeval conversion to jiffies
timeval_to_jiffies tried to round a timeval up to an integral number
of jiffies, but the logic for doing so was incorrect: intervals
corresponding to exactly N jiffies would become N+1. This manifested
itself particularly repeatedly stopping/starting an itimer:
setitimer(ITIMER_PROF, &val, NULL);
setitimer(ITIMER_PROF, NULL, &val);
would add a full tick to val, _even if it was exactly representable in
terms of jiffies_ (say, the result of a previous rounding.) Doing
this repeatedly would cause unbounded growth in val. So fix the math.
Here's what was wrong with the conversion: we essentially computed
(eliding seconds)
jiffies = usec * (NSEC_PER_USEC/TICK_NSEC)
by using scaling arithmetic, which took the best approximation of
NSEC_PER_USEC/TICK_NSEC with denominator of 2^USEC_JIFFIE_SC =
x/(2^USEC_JIFFIE_SC), and computed:
jiffies = (usec * x) >> USEC_JIFFIE_SC
and rounded this calculation up in the intermediate form (since we
can't necessarily exactly represent TICK_NSEC in usec.) But the
scaling arithmetic is a (very slight) *over*approximation of the true
value; that is, instead of dividing by (1 usec/ 1 jiffie), we
effectively divided by (1 usec/1 jiffie)-epsilon (rounding
down). This would normally be fine, but we want to round timeouts up,
and we did so by adding 2^USEC_JIFFIE_SC - 1 before the shift; this
would be fine if our division was exact, but dividing this by the
slightly smaller factor was equivalent to adding just _over_ 1 to the
final result (instead of just _under_ 1, as desired.)
In particular, with HZ=1000, we consistently computed that 10000 usec
was 11 jiffies; the same was true for any exact multiple of
TICK_NSEC.
We could possibly still round in the intermediate form, adding
something less than 2^USEC_JIFFIE_SC - 1, but easier still is to
convert usec->nsec, round in nanoseconds, and then convert using
time*spec*_to_jiffies. This adds one constant multiplication, and is
not observably slower in microbenchmarks on recent x86 hardware.
Tested: the following program:
int main() {
struct itimerval zero = {{0, 0}, {0, 0}};
/* Initially set to 10 ms. */
struct itimerval initial = zero;
initial.it_interval.tv_usec = 10000;
setitimer(ITIMER_PROF, &initial, NULL);
/* Save and restore several times. */
for (size_t i = 0; i < 10; ++i) {
struct itimerval prev;
setitimer(ITIMER_PROF, &zero, &prev);
/* on old kernels, this goes up by TICK_USEC every iteration */
printf("previous value: %ld %ld %ld %ld\n",
prev.it_interval.tv_sec, prev.it_interval.tv_usec,
prev.it_value.tv_sec, prev.it_value.tv_usec);
setitimer(ITIMER_PROF, &prev, NULL);
}
return 0;
}
Cc: stable@vger.kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Paul Turner <pjt@google.com>
Cc: Richard Cochran <richardcochran@gmail.com>
Cc: Prarit Bhargava <prarit@redhat.com>
Reviewed-by: Paul Turner <pjt@google.com>
Reported-by: Aaron Jacobs <jacobsa@google.com>
Signed-off-by: Andrew Hunter <ahh@google.com>
[jstultz: Tweaked to apply to 3.17-rc]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Thomas Gleixner [Thu, 11 Sep 2014 21:44:35 +0000 (23:44 +0200)]
futex: Unlock hb->lock in futex_wait_requeue_pi() error path
futex_wait_requeue_pi() calls futex_wait_setup(). If
futex_wait_setup() succeeds it returns with hb->lock held and
preemption disabled. Now the sanity check after this does:
if (match_futex(&q.key, &key2)) {
ret = -EINVAL;
goto out_put_keys;
}
which releases the keys but does not release hb->lock.
So we happily return to user space with hb->lock held and therefor
preemption disabled.
Unlock hb->lock before taking the exit route.
Reported-by: Dave "Trinity" Jones <davej@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Darren Hart <dvhart@linux.intel.com>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: stable@vger.kernel.org
Link: http://lkml.kernel.org/r/alpine.DEB.2.10.1409112318500.4178@nanos
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Al Viro [Fri, 12 Sep 2014 19:56:04 +0000 (20:56 +0100)]
GFS2: fix d_splice_alias() misuses
Callers of d_splice_alias(dentry, inode) don't need iput(), neither
on success nor on failure. Either the reference to inode is stored
in a previously negative dentry, or it's dropped. In either case
inode reference the caller used to hold is consumed.
__gfs2_lookup() does iput() in case when d_splice_alias() has failed.
Double iput() if we ever hit that. And gfs2_create_inode() ends up
not only with double iput(), but with link count dropped to zero - on
an inode it has just found in directory.
Cc: stable@vger.kernel.org # v3.14+
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Linus Torvalds [Fri, 12 Sep 2014 19:00:49 +0000 (12:00 -0700)]
Merge tag 'char-misc-3.17-rc5' of git://git./linux/kernel/git/gregkh/char-misc
Pull char/misc driver fix from Greg KH:
"Here is one misc driver fix for 3.17-rc5. It resolves a kernel oops
that can happen in the lattice FPGA driver if the firmware isn't
present on the system.
It's been in the linux-next tree for a while now"
* tag 'char-misc-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
Lattice ECP3 FPGA: Check firmware pointer
Linus Torvalds [Fri, 12 Sep 2014 19:00:18 +0000 (12:00 -0700)]
Merge tag 'staging-3.17-rc5' of git://git./linux/kernel/git/gregkh/staging
Pull staging driver fixes from Greg KH:
"Here are 3 tiny staging driver fixes for 3.17-rc5.
Two are fixes for the imx-drm driver, resolving issues that have been
reported. The other is a memory leak fix for the Android sync driver,
due to changes that went into 3.17-rc1.
All have been in linux-next for a while"
* tag 'staging-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging:
android: fix reference leak in sync_fence_create
imx-drm: imx-ldb: fix NULL pointer in imx_ldb_unbind()
imx-drm: ipuv3-plane: fix ipu_plane_dpms()
Linus Torvalds [Fri, 12 Sep 2014 18:59:48 +0000 (11:59 -0700)]
Merge tag 'tty-3.17-rc5' of git://git./linux/kernel/git/gregkh/tty
Pull tty/serial fixes from Greg KH:
"Here are 3 patches for 3.17-rc5. Two serial driver fixes that resolve
some reported issues, and one new device id.
All have been in linux-next just fine"
* tag 'tty-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: xuartps: Fix tx_emtpy() callback
tty/serial: at91: BUG: disable interrupts when !UART_ENABLE_MS()
serial: 8250_dw: Add ACPI ID for Intel Braswell
Linus Torvalds [Fri, 12 Sep 2014 18:59:10 +0000 (11:59 -0700)]
Merge tag 'usb-3.17-rc5' of git://git./linux/kernel/git/gregkh/usb
Pull USB fixes from Greg KH:
"Here are some USB and PHY fixes for 3.17-rc5.
Nothing major here, just a number of tiny fixes for reported issues,
and some new device ids as well.
All have been tested in linux-next"
* tag 'usb-3.17-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (46 commits)
xhci: fix oops when xhci resumes from hibernate with hw lpm capable devices
usb: xhci: Fix OOPS in xhci error handling code
xhci: Fix null pointer dereference if xhci initialization fails
storage: Add single-LUN quirk for Jaz USB Adapter
uas: Add missing le16_to_cpu calls to asm1051 / asm1053 usb-id check
usb: chipidea: msm: Initialize PHY on reset event
usb: chipidea: msm: Use USB PHY API to control PHY state
usb: hub: take hub->hdev reference when processing from eventlist
uas: Disable uas on ASM1051 devices
usb: dwc2/gadget: avoid disabling ep0
usb: dwc2/gadget: delay enabling irq once hardware is configured properly
usb: dwc2/gadget: do not call disconnect method in pullup
usb: dwc2/gadget: break infinite loop in endpoint disable code
usb: dwc2/gadget: fix phy initialization sequence
usb: dwc2/gadget: fix phy disable sequence
uwb: init beacon cache entry before registering uwb device
USB: ftdi_sio: Add support for GE Healthcare Nemo Tracker device
USB: document the 'u' flag for usb-storage quirks parameter
usb: host: xhci: fix compliance mode workaround
usb: dwc3: fix TRB completion when multiple TRBs are started
...
Linus Torvalds [Fri, 12 Sep 2014 18:54:54 +0000 (11:54 -0700)]
Merge tag 'nfs-for-3.17-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust:
"Highlights:
- fix a kernel warning when removing /proc/net/nfsfs
- revert commit
49a4bda22e18 due to Oopses
- fix a typo in the pNFS file layout commit code"
* tag 'nfs-for-3.17-4' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
pnfs: fix filelayout_retry_commit when idx > 0
nfs: revert "nfs4: queue free_lock_state job submission to nfsiod"
nfs: fix kernel warning when removing proc entry
Linus Torvalds [Fri, 12 Sep 2014 18:53:30 +0000 (11:53 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/linux-btrfs
Pull btrfs fixes from Chris Mason:
"Filipe is doing a careful pass through fsync problems, and these are
the fixes so far. I'll have one more for rc6 that we're still
testing.
My big commit is fixing up some inode hash races that Al Viro found
(thanks Al)"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: use insert_inode_locked4 for inode creation
Btrfs: fix fsync data loss after a ranged fsync
Btrfs: kfree()ing ERR_PTRs
Btrfs: fix crash while doing a ranged fsync
Btrfs: fix corruption after write/fsync failure + fsync + log recovery
Btrfs: fix autodefrag with compression
NeilBrown [Thu, 11 Sep 2014 06:19:37 +0000 (16:19 +1000)]
NFS: remove BUG possibility in nfs4_open_and_get_state
commit
4fa2c54b5198d09607a534e2fd436581064587ed
NFS: nfs4_do_open should add negative results to the dcache.
used "d_drop(); d_add();" to ensure that a dentry was hashed
as a negative cached entry.
This is not safe if the dentry has an non-NULL ->d_inode.
It will trigger a BUG_ON in d_instantiate().
In that case, d_delete() is needed.
Also, only d_add if the dentry is currently unhashed, it seems
pointless removed and re-adding it unchanged.
Reported-by: Christoph Hellwig <hch@infradead.org>
Fixes: 4fa2c54b5198d09607a534e2fd436581064587ed
Cc: Jeff Layton <jeff.layton@primarydata.com>
Link: http://lkml.kernel.org/r/20140908144525.GB19811@infradead.org
Signed-off-by: NeilBrown <neilb@suse.de>
Acked-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Linus Torvalds [Fri, 12 Sep 2014 16:53:47 +0000 (09:53 -0700)]
Merge tag 'arm64-fixes' of git://git./linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"Just a couple of stragglers here:
- fix an issue migrating interrupts on CPU hotplug
- fix a potential information leak of TLS registers across an exec
(Nathan has sent a corresponding patch for arch/arm/ to rmk)"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: flush TLS registers during exec
arm64: use irq_set_affinity with force=false when migrating irqs
Linus Torvalds [Fri, 12 Sep 2014 16:26:49 +0000 (09:26 -0700)]
Merge tag 'iommu-fixes-v3.17-rc4' of git://git./linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- two fixes for issues found by Coverity
- various fixes for the ARM SMMU driver
- a warning fix for the FSL PAMU driver
* tag 'iommu-fixes-v3.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/fsl: Fix warning resulting from adding PCI device twice
iommu/arm-smmu: fix corner cases in address size calculations
iommu/arm-smmu: fix decimal printf format specifiers prefixed with 0x
iommu/arm-smmu: Do not access non-existing S2CR registers
iommu/arm-smmu: fix s2cr and smr teardown on device detach from domain
iommu/arm-smmu: remove pgtable_page_{c,d}tor()
iommu/arm-smmu: fix programming of SMMU_CBn_TCR for stage 1
iommu/arm-smmu: avoid calling request_irq in atomic context
iommu/vt-d: Check return value of acpi_bus_get_device()
iommu/core: Make iommu_group_get_for_dev() more robust
Linus Torvalds [Fri, 12 Sep 2014 16:24:46 +0000 (09:24 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jmorris/linux-security
Pull assoc array garbage collection fix from James Morris.
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
KEYS: Fix termination condition in assoc array garbage collection
Linus Torvalds [Fri, 12 Sep 2014 16:11:37 +0000 (09:11 -0700)]
Merge tag 'fbdev-fixes-3.17' of git://git./linux/kernel/git/tomba/linux
Pull fbdev fixes from Tomi Valkeinen:
"Minor fixes for amba-clcd and video DT bindings"
* tag 'fbdev-fixes-3.17' of git://git.kernel.org/pub/scm/linux/kernel/git/tomba/linux:
video: ARM CLCD: Fix color model capabilities for DT platforms
video: fix composite video connector compatible string
Linus Torvalds [Fri, 12 Sep 2014 15:27:40 +0000 (08:27 -0700)]
Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"AST, i915, radeon and msm fixes, all over the place.
All fixing build issues, regressions, oopses or failure to detect
cards"
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/ast: AST2000 cannot be detected correctly
drm/ast: open key before detect chips
drm/msm: don't crash if no msm.vram param
drm/msm/hdmi: fix build break on non-CCF platforms
drm/msm: Change nested function to static function
drm/radeon/dpm: set the thermal type properly for special configs
drm/radeon: reduce memory footprint for debugging
drm/radeon: add connector quirk for fujitsu board
drm/radeon: fix semaphore value init
drm/radeon: only use me/pfp sync on evergreen+
drm/i915: Wait for vblank before enabling the TV encoder
drm/i915: Evict CS TLBs between batches
drm/i915: Fix irq enable tracking in driver load
drm/i915: Fix EIO/wedged handling in gem fault handler
drm/i915: Prevent recursive deadlock on releasing a busy userptr
Bjorn Helgaas [Fri, 12 Sep 2014 14:50:10 +0000 (08:50 -0600)]
PCI: Remove "no hotplug settings from platform" warning
We print way too many messages like this:
pci 0000:00:00.0: no hotplug settings from platform
pci 0000:00:00.0: using default PCI settings
This usually happens when the platform doesn't supply an ACPI _HPP method,
but the method is optional, so there's no point in warning about it.
Not only are the messages useless, but we call pci_configure_slot() far too
many times, so they're repeated many times. I'll fix the overuse of
pci_configure_slot() too, but that will wait until the next merge window.
For now, just remove both log messages.
Link: https://bugzilla.kernel.org/show_bug.cgi?id=84391
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Yinghai Lu <yinghai@kernel.org>
David Howells [Wed, 10 Sep 2014 21:22:00 +0000 (22:22 +0100)]
KEYS: Fix termination condition in assoc array garbage collection
This fixes CVE-2014-3631.
It is possible for an associative array to end up with a shortcut node at the
root of the tree if there are more than fan-out leaves in the tree, but they
all crowd into the same slot in the lowest level (ie. they all have the same
first nibble of their index keys).
When assoc_array_gc() returns back up the tree after scanning some leaves, it
can fall off of the root and crash because it assumes that the back pointer
from a shortcut (after label ascend_old_tree) must point to a normal node -
which isn't true of a shortcut node at the root.
Should we find we're ascending rootwards over a shortcut, we should check to
see if the backpointer is zero - and if it is, we have completed the scan.
This particular bug cannot occur if the root node is not a shortcut - ie. if
you have fewer than 17 keys in a keyring or if you have at least two keys that
sit into separate slots (eg. a keyring and a non keyring).
This can be reproduced by:
ring=`keyctl newring bar @s`
for ((i=1; i<=18; i++)); do last_key=`keyctl newring foo$i $ring`; done
keyctl timeout $last_key 2
Doing this:
echo 3 >/proc/sys/kernel/keys/gc_delay
first will speed things up.
If we do fall off of the top of the tree, we get the following oops:
BUG: unable to handle kernel NULL pointer dereference at
0000000000000018
IP: [<
ffffffff8136cea7>] assoc_array_gc+0x2f7/0x540
PGD
dae15067 PUD
cfc24067 PMD 0
Oops: 0000 [#1] SMP
Modules linked in: xt_nat xt_mark nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_rpfilter ip6t_REJECT xt_conntrack ebtable_nat ebtable_broute bridge stp llc ebtable_filter ebtables ip6table_ni
CPU: 0 PID: 26011 Comm: kworker/0:1 Not tainted 3.14.9-200.fc20.x86_64 #1
Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
Workqueue: events key_garbage_collector
task:
ffff8800918bd580 ti:
ffff8800aac14000 task.ti:
ffff8800aac14000
RIP: 0010:[<
ffffffff8136cea7>] [<
ffffffff8136cea7>] assoc_array_gc+0x2f7/0x540
RSP: 0018:
ffff8800aac15d40 EFLAGS:
00010206
RAX:
0000000000000000 RBX:
0000000000000000 RCX:
ffff8800aaecacc0
RDX:
ffff8800daecf440 RSI:
0000000000000001 RDI:
ffff8800aadc2bc0
RBP:
ffff8800aac15da8 R08:
0000000000000001 R09:
0000000000000003
R10:
ffffffff8136ccc7 R11:
0000000000000000 R12:
0000000000000000
R13:
0000000000000000 R14:
0000000000000070 R15:
0000000000000001
FS:
0000000000000000(0000) GS:
ffff88011fc00000(0000) knlGS:
0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0:
000000008005003b
CR2:
0000000000000018 CR3:
00000000db10d000 CR4:
00000000000006f0
Stack:
ffff8800aac15d50 0000000000000011 ffff8800aac15db8 ffffffff812e2a70
ffff880091a00600 0000000000000000 ffff8800aadc2bc3 00000000cd42c987
ffff88003702df20 ffff88003702dfa0 0000000053b65c09 ffff8800aac15fd8
Call Trace:
[<
ffffffff812e2a70>] ? keyring_detect_cycle_iterator+0x30/0x30
[<
ffffffff812e3e75>] keyring_gc+0x75/0x80
[<
ffffffff812e1424>] key_garbage_collector+0x154/0x3c0
[<
ffffffff810a67b6>] process_one_work+0x176/0x430
[<
ffffffff810a744b>] worker_thread+0x11b/0x3a0
[<
ffffffff810a7330>] ? rescuer_thread+0x3b0/0x3b0
[<
ffffffff810ae1a8>] kthread+0xd8/0xf0
[<
ffffffff810ae0d0>] ? insert_kthread_work+0x40/0x40
[<
ffffffff816ffb7c>] ret_from_fork+0x7c/0xb0
[<
ffffffff810ae0d0>] ? insert_kthread_work+0x40/0x40
Code: 08 4c 8b 22 0f 84 bf 00 00 00 41 83 c7 01 49 83 e4 fc 41 83 ff 0f 4c 89 65 c0 0f 8f 5a fe ff ff 48 8b 45 c0 4d 63 cf 49 83 c1 02 <4e> 8b 34 c8 4d 85 f6 0f 84 be 00 00 00 41 f6 c6 01 0f 84 92
RIP [<
ffffffff8136cea7>] assoc_array_gc+0x2f7/0x540
RSP <
ffff8800aac15d40>
CR2:
0000000000000018
---[ end trace
1129028a088c0cbd ]---
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Don Zickus <dzickus@redhat.com>
Signed-off-by: James Morris <james.l.morris@oracle.com>
Pawel Moll [Wed, 10 Sep 2014 14:15:53 +0000 (15:15 +0100)]
video: ARM CLCD: Fix color model capabilities for DT platforms
The DT-based panel capabilities selection was picking up
a subset of available modes based on hardware configuration.
This was wrong, as the capabilities describe available
memory models and adapt the display controller to them
that the RGB output is wired up correctly (as in: R and
B components are not swapped).
This patch fixes it by removing the unnecessary limitation.
Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Nick Dyer [Thu, 11 Sep 2014 17:31:45 +0000 (10:31 -0700)]
Input: atmel_mxt_ts - fix merge in DT documentation
Something went a bit wrong in merging
f5940231a - there's a bit of repeated
text that's been introduced.
Signed-off-by: Nick Dyer <nick.dyer@itdev.co.uk>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Hans de Goede [Thu, 11 Sep 2014 17:13:13 +0000 (10:13 -0700)]
Input: i8042 - also set the firmware id for MUXed ports
So that firmware-id matching can be used with multiplexed aux ports too.
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Hans de Goede [Thu, 11 Sep 2014 17:10:26 +0000 (10:10 -0700)]
Input: i8042 - add nomux quirk for Avatar AVIU-145A6
The sys_vendor / product_name are somewhat generic unfortunately, so this
may lead to some false positives. But nomux usually does no harm, where as
not having it clearly is causing problems on the Avatar AVIU-145A6.
https://bugzilla.kernel.org/show_bug.cgi?id=77391
Cc: stable@vger.kernel.org
Reported-by: Hugo P <saurosii@gmail.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Hans de Goede [Wed, 10 Sep 2014 20:53:37 +0000 (13:53 -0700)]
Input: i8042 - add Fujitsu U574 to no_timeout dmi table
https://bugzilla.kernel.org/show_bug.cgi?id=69731
Cc: stable@vger.kernel.org
Reported-by: Jason Robinson <mail@jasonrobinson.me>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Dmitry Torokhov [Wed, 10 Sep 2014 20:50:37 +0000 (13:50 -0700)]
Input: atkbd - do not try 'deactivate' keyboard on any LG laptops
We are getting more and more reports about LG laptops not having
functioning keyboard if we try to deactivate keyboard during probe.
Given that having keyboard deactivated is merely "nice to have"
instead of a hard requirement for probing, let's disable it on all
LG boxes instead of trying to hunt down particular models.
This change is prompted by patches trying to add "LG Electronics"/"ROCKY"
and "LG Electronics"/"LW60-F27B" to the DMI list.
https://bugzilla.kernel.org/show_bug.cgi?id=77051
Cc: stable@vger.kernel.org
Reported-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Reported-by: Georgios Tsalikis <georgios@tsalikis.net>
Tested-by: Jaime Velasco Juan <jsagarribay@gmail.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>