percpu_pagelist_fraction_sysctl_handler() has only considered -EINVAL as
a possible error from proc_dointvec_minmax().
If any other error is returned, it would proceed to divide by zero since
percpu_pagelist_fraction wasn't getting initialized at any point. For
example, writing 0 bytes into the proc file would trigger the issue.
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Reviewed-by: Minchan Kim <minchan@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reset the current pagemap-entry if the current pte isn't present, or if
current vma is over. Otherwise pagemap reports last entry again and
again.
Non-present pte reporting was broken in commit 092b50bacd ("pagemap:
introduce data structure for pagemap entry")
Reporting for holes was broken in commit 5aaabe831e ("pagemap: avoid
splitting thp when reading /proc/pid/pagemap")
Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Reported-by: Pavel Emelyanov <xemul@parallels.com>
Cc: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fix for the NFSv4 security negotiation:
- Ensure that the security negotiation tries all registered security flavours
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=xNqW
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-3.4-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull a NFS client bugfix from Trond Myklebust:
"Fix for the NFSv4 security negotiation: ensure that the security
negotiation tries all registered security flavours"
* tag 'nfs-for-3.4-5' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
auth_gss: the list of pseudoflavors not being parsed correctly
Slightly more than expected as rc7, but all are reasonablly small fixes.
A few additions of HD-audio fixup entries, a couple of other regression
fixes including a revert, and a few other trivial oneliners.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.18 (GNU/Linux)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=7Zz7
-----END PGP SIGNATURE-----
Merge tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"Slightly more than expected as rc7, but all are reasonablly small
fixes. A few additions of HD-audio fixup entries, a couple of other
regression fixes including a revert, and a few other trivial
oneliners."
* tag 'sound-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ASoC: sh: fix migor.c compilation
ALSA: HDA: Lessen CPU usage when waiting for chip to respond
Revert "ALSA: hda - Set codec to D3 forcibly even if not used"
ALSA: hda/realtek - Call alc_auto_parse_customize_define() always after fixup
ALSA: hdsp - Provide ioctl_compat
ALSA: hda/realtek - Add missing CD-input pin for MSI-7350 mobo
ALSA: hda/realtek - Add a fixup for Acer Aspire 5739G
ALSA: echoaudio: Remove incorrect part of assertion
compat_sys_sigprocmask reads a smaller signal mask from userspace than
sigprogmask accepts for setting. So the high word of blocked.sig[0]
will be cleared, releasing any potentially blocked RT signal.
This was discovered via userspace code that relies on get/setcontext.
glibc's i386 versions of those functions use sigprogmask instead of
rt_sigprogmask to save/restore signal mask and caused RT signal
unblocking this way.
As suggested by Linus, this replaces the sys_sigprocmask based compat
version with one that open-codes the required logic, including the merge
of the existing blocked set with the new one provided on SIG_SETMASK.
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Things have slowed down a lot for us, but we have five more fixes for
omap and kirkwood below. Three are for boards setup issues, two are
SoC-level fixes.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=GX6x
-----END PGP SIGNATURE-----
Merge tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM: SoC fixes from Olof Johansson:
"Things have slowed down a lot for us, but we have five more fixes for
omap and kirkwood below. Three are for boards setup issues, two are
SoC-level fixes."
* tag 'fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: OMAP: igep0020: fix smsc911x dummy regulator id
ARM: orion5x: Fix GPIO enable bits for MPP9
ARM: kirkwood: add missing kexec.h include
ARM: OMAP: Revert "ARM: OMAP: ctrl: Fix CONTROL_DSIPHY register fields"
ARM: OMAP1: Amstrad Delta: Fix wrong IRQ base in FIQ handler
This is a last minute bug fix that was only just noticed since the code
path that's being exercised here is one that is fairly rarely used. The
changelog for the change itself is extremely clear and the code itself
is obvious to inspection so should be pretty safe.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQIcBAABAgAGBQJPqoQhAAoJEBus8iNuMP3dj1kP/0Z1yIk1ME0KzSy42/qbGKsp
+2mrAASkh7DbbWU2hSmwTpEgAAiY2ws0A/Uyj/Al4f/gJW6bZvlxK4mbf1i+P1LG
ab3ohhUOqexHVaIKMTnYKhnHWuzU25mnf2vW8IOr6jccu6h7X4orDmw1uEPVgsbs
P7fThQa0BPRkiLIUWGmg0oMY6IXJlzsStDK2Npw47EypY4FZCZucJgXkmYZLt0Nk
mhLPsznD5GqHNSmCqrUI3j/s3R0sd/Xc63pvznBU9D8RAbSRgi2vGL8UenEtIQgt
bVXOKe5H8ZzXYNYpzpGeJm3dTE2pZWmT1hfRSf0kBOkLhEpt/Oy9WBj1kfoTg9n9
fNH6OJYn12uG0qQomiAT96Qm3qrslF5y9S64ZyHT6BAkJT87wnEqTmaQkoAevDEr
hldzT+dTPAk2Pspge8m910+kQA72YyE1z6/PikvkEepYDFrqffZcBFWqjW8aQjGj
/5r7F5fLC7zJku0FjYUMRYDgYc9z0lk6tDt8QL7E7j+55ntrhYR8IuTQA7g2asal
yeQSTqa/NkJcch+aULgyOU0W9U1z2i04mdGI74iJnf3DSGGmvJ95IYLJA4tfnIOw
63xo2BhmHVGyRqTN5l7o5Zlgf5FdcUt+5EBLudSqqZynB/tMZNgb0PEzfIRFBuRq
GSIm5dwIqKgtymCEOUmp
=xcal
-----END PGP SIGNATURE-----
Merge tag 'regmap-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap
Pull last minute regman bug fix from Mark Brown:
"This is a last minute bug fix that was only just noticed since the
code path that's being exercised here is one that is fairly rarely
used. The changelog for the change itself is extremely clear and the
code itself is obvious to inspection so should be pretty safe."
* tag 'regmap-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
regmap: fix possible memory corruption in regmap_bulk_read()
Pull KVM fixes from Avi Kivity:
"Two asynchronous page fault fixes (one guest, one host), a powerpc
page refcount fix, and an ia64 build fix."
* git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: ia64: fix build due to typo
KVM: PPC: Book3S HV: Fix refcounting of hugepages
KVM: Do not take reference to mm during async #PF
KVM: ensure async PF event wakes up vcpu from halt
Pull powerpc fixes from Benjamin Herrenschmidt:
"Here are a couple of last minute fixes for 3.4 for regressions
introduced by my rewrite of the lazy irq masking code."
* 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc:
powerpc/irq: Make alignment & program interrupt behave the same
powerpc/irq: Fix bug with new lazy IRQ handling code
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQIcBAABAgAGBQJPqowwAAoJEBvUPslcq6VzDPQP/1LBOfJb6OMdK+lfDA49tMtU
q/Qzq5GvgKA7+Opb3n5TVpnXh1cT7tSrvDtYI/ol8KaCVkLLoxdIO1dJekPyX81H
+W4JoUYOLDAKfJ7FP44K7MJu/TsXsQ22Hyv6hYKw9lfm9rzIQwp/ofD08g9HDubc
j6BbrIH/mBEIheJPor1Iz1j+A50EImKpkixrfD9ttJfJkwu3FmzDp+KvLNhzDX7H
VCCYatJIkJPXEqIwaVjOyAqSvU3ZHFLxkFVjzRwkLpd2bNA1KX/FjOzv4lrK4jf3
A2eEce/YSPrNn8KhM+mB/UKLLJ3ifgUvDS6IsvVkxwsPUyGpEwFL1KBEiAlVfApq
WWxC/WZcZgHlXs4WRH/FS5ERLuPhaom+YkSs8bZRqAGxtA8RO1E6yNG6fzlp84/B
LFxKa7TXEMCmSoRye6rZ4gmndCQ+8q0OQv1M89aHvn/iv7arS8XtWLGzp01qAQzQ
OX8CCRxiRxJd9g3nCLhGq77UTI89ZiP86562Df50Akc2SYPCrw2hPR1rYjzU1TCl
2nVQsDhSJDcGTuIVClTUmbUMM34RJQxlxAgxBJkDPshNjXiV0qMzYe+U1t4HjArE
IBfshxY0qL6x8y2cdoeDkSpSyhjbeHZqPHYJ/nGFCkTNCQF1+c6o3NqYmdtd+bsF
bAF1qF3FGhjXubgzpOzM
=k8QU
-----END PGP SIGNATURE-----
Merge tag 'omap-fixes-for-v3.4-rc6-take-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Fix two board spefific regressions and one regression caused by bad documentation
By Archit Taneja (1) and others
via Tony Lindgren
* tag 'omap-fixes-for-v3.4-rc6-take-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: OMAP: igep0020: fix smsc911x dummy regulator id
ARM: OMAP: Revert "ARM: OMAP: ctrl: Fix CONTROL_DSIPHY register fields"
ARM: OMAP1: Amstrad Delta: Fix wrong IRQ base in FIQ handler
id 0 is already used and causes errors at boot:
WARNING: at fs/sysfs/dir.c:508 sysfs_add_one+0x9c/0xac()
sysfs: cannot create duplicate filename '/devices/platform/reg-fixed-voltage.0'
Fix it by using the next available one (id=1).
This was caused by 5b3689f4 (ARM: OMAP2+: smsc911x: Add fixed
board regulators) that did not account for some regulators
already being used.
Signed-off-by: Enrico Butera <ebutera@users.berlios.de>
[tony@atomide.com: updated comments for regression causing commit]
Signed-off-by: Tony Lindgren <tony@atomide.com>
The function regmap_bulk_read() calls the regmap_read() for
each register if set of register has volatile and cache is
enabled. In this case, last few register read makes the memory
corruption if the register size is not the size of unsigned int.
The regam_read() takes argument as unsigned int for returning
value and it update the value as
*val = map->format.parse_val(map->work_buf);
This causes complete 4 bytes (size of unsigned int) to get written.
Now if client pass the memory pointer for value which is equal to the
required size of register count in regmap_bulk_read() then last few
register read actually update the memory beyond passed pointer size.
Avoid this by using local variable for read and then do memcpy()
for actual byte copy to passed pointer based on register size.
I allocated one pointer ptr and take first 16 bytes dump of that
pointer then call regmap_bulk_read() with pointer which is just
on top of this allocated pointer and register count of 128. Here
register size is 1 byte.
The memory trace of last 5 register read are as follows:
[ 5.438589] regmap_bulk_read after regamp_read() for register 122
[ 5.447421] 0xef993c20 0xef993c00 0x00000000 0x00000001
[ 5.467535] regmap_bulk_read after regamp_read() for register 123
[ 5.476374] 0xef993c20 0xef993c00 0x00000000 0x00000001
[ 5.496425] regmap_bulk_read after regamp_read() for register 124
[ 5.505260] 0xef993c20 0xef993c00 0x00000000 0x00000001
[ 5.525372] regmap_bulk_read after regamp_read() for register 125
[ 5.534205] 0xef993c00 0xef993c00 0x00000000 0x00000001
[ 5.554258] regmap_bulk_read after regamp_read() for register 126
[ 5.563100] 0xef990000 0xef993c00 0x00000000 0x00000001
[ 5.554258] regmap_bulk_read after regamp_read() for register 127
[ 5.587108] 0xef000000 0xef993c00 0x00000000 0x00000001
Here it is observed that the memory content at first word started changing
on last 3 regmap_read() and so corruption happened.
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
An API update which wasn't sufficiently thorough in updating the tree...
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=HF38
-----END PGP SIGNATURE-----
Merge tag 'asoc-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Build fix for SH in 3.4
An API update which wasn't sufficiently thorough in updating the tree...
Fix a recent compilation breakage, caused by a change in SH clock API.
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
When an IRQ for some reason gets lost, we wait up to a second using
udelay, which is CPU intensive. This patch improves the situation by
waiting about 30 ms in the CPU intensive mode, then stepping down to
using msleep(2) instead. In essence, we trade some granularity in
exchange for less CPU consumption when the waiting time is a bit longer.
As a result, PulseAudio should no longer be killed by the kernel
for taking up to much RT-prio CPU time. At least not for *this* reason.
Signed-off-by: David Henningsson <david.henningsson@canonical.com>
Tested-by: Arun Raghavan <arun.raghavan@collabora.co.uk>
Cc: <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
By Ben Hutchings (1) and Ian Campbell (1)
via Jason Cooper: "ARM: kirkwood: fixes for v3.4"
* 'kirkwood_fixes_for_v3.4' of git://git.infradead.org/users/jcooper/linux-kirkwood:
ARM: orion5x: Fix GPIO enable bits for MPP9
ARM: kirkwood: add missing kexec.h include
Alignment was the last user of the ENABLE_INTS macro, which we can
now remove. All non-syscall exceptions now disable interrupts on
entry, they get re-enabled conditionally from C code. Don't
unconditionally re-enable in program check either, check the
original context.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
We had a case where we could turn on hard interrupts while
leaving the PACA_IRQ_HARD_DIS bit set in the PACA. This can
in turn cause a BUG_ON() to hit in __check_irq_replay() due
to interrupt state getting out of sync.
The assembly code was also way too convoluted. Instead, we
now leave it to the C code to do the right thing which ends
up being smaller and more readable.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Commit 554cdaefd1 ('ARM: orion5x: Refactor
mpp code to use common orion platform mpp.') seems to have accidentally
inverted the GPIO valid bits for MPP9 (only). For the mv2120 platform
which uses MPP9 as a GPIO LED device, this results in the error:
[ 12.711476] leds-gpio: probe of leds-gpio failed with error -22
Reported-by: Henry von Tresckow <hvontres@gmail.com>
References: http://bugs.debian.org/667446
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Cc: stable@vger.kernel.org [v3.0+]
Tested-by: Hans Henry von Tresckow <hvontres@gmail.com>
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
One small fix for an edge condition in the max8997 driver and a fix for
a surprise in the devres API which caused devm_regulator_put() to not
actually put the regulator - a nicer version of this based on an
improvement of the devres API is queued for 3.5.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)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=Q7eh
-----END PGP SIGNATURE-----
Merge tag 'regulator-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"One small fix for an edge condition in the max8997 driver and a fix
for a surprise in the devres API which caused devm_regulator_put() to
not actually put the regulator - a nicer version of this based on an
improvement of the devres API is queued for 3.5."
* tag 'regulator-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: Actually free the regulator in devm_regulator_put()
regulator: Fix the logic to ensure new voltage setting in valid range
Fixes the following build error when CONFIG_KEXEC is enabled:
CC arch/arm/mach-kirkwood/board-dt.o
arch/arm/mach-kirkwood/board-dt.c: In function 'kirkwood_dt_init':
arch/arm/mach-kirkwood/board-dt.c:52:2: error: 'kexec_reinit' undeclared (first use in this function)
arch/arm/mach-kirkwood/board-dt.c:52:2: note: each undeclared identifier is reported only once for each function it appears in
Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
[v4, rebase onto recent Linus for repost]
[v3, speak actual English in the commit message, thanks Sergei Shtylyov]
[v2, using linux/kexec.h not asm/kexec.h]
Signed-off-by: Jason Cooper <jason@lakedaemon.net>
Pull drm fixes from Dave Airlie:
"Two fixes from Intel, one a regression, one because I merged an early
version of a fix.
Also the nouveau revert of the i2c code that was tested on the list."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau/i2c: resume use of i2c-algo-bit, rather than custom stack
drm/i915: Do no set Stencil Cache eviction LRA w/a on gen7+
drm/i915: disable sdvo hotplug on i945g/gm
* fix to Kconfig to make it fit within 80 line characters,
* two bootup fixes (AMD 8-core and with PCI BIOS),
* cleanup code in a Xen PV fb driver,
* and a crash fix when trying to see non-existent PTE's
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iQEcBAABAgAGBQJPp/iaAAoJEFjIrFwIi8fJAFsH/1NVxvOAHyzyczU49U/1vi8T
d67kIb8fFHni6HO7BiBkuM8DricGQnDhP7uC1n9waWf8jRiYsPTAbesyedTLbQos
SLfzpsLWKilJOxWCf17cBnm6i9ScQn1ioJ6h3jFzHgNCXnvvAVYqfKHW0V6HTErH
JL0eb4+asiZgXNSeac1gabQlai6LuBzMWaFgzRGY+hDnCQhkdQfDkD7X5zEhUUmH
jUmtSxRx+5LkfelwRb2kHhI5j58ilOEa7YLZFQc3C+2+bUvgsG9vJDsQ3jwFaGDn
cryfRY9WJXxgcXqk1ClOnk9U9PGzRc48gdLVLhYuLsIvUWN7RzgRlBMsH33Gq9M=
=kjvX
-----END PGP SIGNATURE-----
Merge tag 'stable/for-linus-3.4-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull xen fixes from Konrad Rzeszutek Wilk:
- fix to Kconfig to make it fit within 80 line characters,
- two bootup fixes (AMD 8-core and with PCI BIOS),
- cleanup code in a Xen PV fb driver,
- and a crash fix when trying to see non-existent PTE's
* tag 'stable/for-linus-3.4-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/Kconfig: fix Kconfig layout
xen/pci: don't use PCI BIOS service for configuration space accesses
xen/pte: Fix crashes when trying to see non-existent PGD/PMD/PUD/PTEs
xen/apic: Return the APIC ID (and version) for CPU 0.
drivers/video/xen-fbfront.c: add missing cleanup code
Pull two percpu fixes from Tejun Heo:
"One adds missing KERN_CONT on split printk()s and the other makes
the percpu allocator avoid using PMD_SIZE as atom_size on x86_32.
Using PMD_SIZE led to vmalloc area exhaustion on certain
configurations (x86_32 android) and the only cost of using PAGE_SIZE
instead is static percpu area not being aligned to large page
mapping."
* 'for-3.4-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu:
percpu, x86: don't use PMD_SIZE as embedded atom_size on 32bit
percpu: use KERN_CONT in pcpu_dump_alloc_info()
Pull ARM fixes from Russell King:
"This is mainly audit fixes, found by folks who happened to enable this
feature and then found it broke their user applications."
* 'fixes' of git://git.linaro.org/people/rmk/linux-arm:
ARM: 7414/1: SMP: prevent use of the console when using idmap_pgd
ARM: 7412/1: audit: use only AUDIT_ARCH_ARM regardless of endianness
ARM: 7411/1: audit: fix treatment of saved ip register during syscall tracing
ARM: 7410/1: Add extra clobber registers for assembly in kernel_execve
With the embed percpu first chunk allocator, x86 uses either PAGE_SIZE
or PMD_SIZE for atom_size. PMD_SIZE is used when CPU supports PSE so
that percpu areas are aligned to PMD mappings and possibly allow using
PMD mappings in vmalloc areas in the future. Using larger atom_size
doesn't waste actual memory; however, it does require larger vmalloc
space allocation later on for !first chunks.
With reasonably sized vmalloc area, PMD_SIZE shouldn't be a problem
but x86_32 at this point is anything but reasonable in terms of
address space and using larger atom_size reportedly leads to frequent
percpu allocation failures on certain setups.
As there is no reason to not use PMD_SIZE on x86_64 as vmalloc space
is aplenty and most x86_64 configurations support PSE, fix the issue
by always using PMD_SIZE on x86_64 and PAGE_SIZE on x86_32.
v2: drop cpu_has_pse test and make x86_64 always use PMD_SIZE and
x86_32 PAGE_SIZE as suggested by hpa.
Signed-off-by: Tejun Heo <tj@kernel.org>
Reported-by: Yanmin Zhang <yanmin.zhang@intel.com>
Reported-by: ShuoX Liu <shuox.liu@intel.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
LKML-Reference: <4F97BA98.6010001@intel.com>
Cc: stable@vger.kernel.org
The H_REGISTER_VPA hcall implementation in HV Power KVM needs to pin some
guest memory pages into host memory so that they can be safely accessed
from usermode. It does this used get_user_pages_fast(). When the VPA is
unregistered, or the VCPUs are cleaned up, these pages are released using
put_page().
However, the get_user_pages() is invoked on the specific memory are of the
VPA which could lie within hugepages. In case the pinned page is huge,
we explicitly find the head page of the compound page before calling
put_page() on it.
At least with the latest kernel, this is not correct. put_page() already
handles finding the correct head page of a compound, and also deals with
various counts on the individual tail page which are important for
transparent huge pages. We don't support transparent hugepages on Power,
but even so, bypassing this count maintenance can lead (when the VM ends)
to a hugepage being released back to the pool with a non-zero mapcount on
one of the tail pages. This can then lead to a bad_page() when the page
is released from the hugepage pool.
This removes the explicit compound_head() call to correct this bug.
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Avi Kivity <avi@redhat.com>
This reverts commit 785f857d1c.
The commit causes a problem with the wrong D3 state after suspend
because the call of hda_set_power_state() involves with the power-up
sequence, which changes the power_count, and this confuses the resume
sequence that checks the power_count as well.
Originally, this go-to-D3 sequence should be a simple task without the
power-up sequence. But, it'd need some proper sanity checks in the
case of power-saved state, so it's not too easy to write now in the
3.4-rc cycle.
In short, the safest option now is to revert this affecting commit.
Of course, we need to clean up and robustify the power-saving code
better for 3.5 kernel.
Reported-by: Konstantin Khlebnikov <khlebnikov@openvz.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The call for alc_auto_parse_customize_define() must be done after the
fixup pre-probe initialization. Otherwise SKU_IGNORE fixup won't work
properly (e.g. HP RP5800 with ALC662 codec).
Signed-off-by: Takashi Iwai <tiwai@suse.de>
snd_hdsp uses its own ioctls to acquire config- and status information.
Expose the corresponding ioctl handler via ioctl_compat, so that 32bit applications can use it on 64bit kernels.
Signed-off-by: Andre Schramm <andre.schramm@iosono-sound.com>
Reviewed-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Adrian Knoth <adi@drcomp.erfurt.thur.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Fit it into 80 columns so that it is readable in menuconfig.
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
The accessing PCI configuration space with the PCI BIOS32 service does
not work in PV guests.
On systems without MMCONFIG or where the BIOS hasn't marked the
MMCONFIG region as reserved in the e820 map, the BIOS service is
probed (even though direct access is preferred) and this hangs.
CC: stable@kernel.org
Acked-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: David Vrabel <david.vrabel@citrix.com>
[v1: Fixed compile error when CONFIG_PCI is not set]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
If I try to do "cat /sys/kernel/debug/kernel_page_tables"
I end up with:
BUG: unable to handle kernel paging request at ffffc7fffffff000
IP: [<ffffffff8106aa51>] ptdump_show+0x221/0x480
PGD 0
Oops: 0000 [#1] SMP
CPU 0
.. snip..
RAX: 0000000000000000 RBX: ffffc00000000fff RCX: 0000000000000000
RDX: 0000800000000000 RSI: 0000000000000000 RDI: ffffc7fffffff000
which is due to the fact we are trying to access a PFN that is not
accessible to us. The reason (at least in this case) was that
PGD[256] is set to __HYPERVISOR_VIRT_START which was setup (by the
hypervisor) to point to a read-only linear map of the MFN->PFN array.
During our parsing we would get the MFN (a valid one), try to look
it up in the MFN->PFN tree and find it invalid and return ~0 as PFN.
Then pte_mfn_to_pfn would happilly feed that in, attach the flags
and return it back to the caller. 'ptdump_show' bitshifts it and
gets and invalid value that it tries to dereference.
Instead of doing all of that, we detect the ~0 case and just
return !_PAGE_PRESENT.
This bug has been in existence .. at least until 2.6.37 (yikes!)
CC: stable@kernel.org
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
On x86_64 on AMD machines where the first APIC_ID is not zero, we get:
ACPI: LAPIC (acpi_id[0x01] lapic_id[0x10] enabled)
BIOS bug: APIC version is 0 for CPU 1/0x10, fixing up to 0x10
BIOS bug: APIC version mismatch, boot CPU: 0, CPU 1: version 10
which means that when the ACPI processor driver loads and
tries to parse the _Pxx states it fails to do as, as it
ends up calling acpi_get_cpuid which does this:
for_each_possible_cpu(i) {
if (cpu_physical_id(i) == apic_id)
return i;
}
And the bootup CPU, has not been found so it fails and returns -1
for the first CPU - which then subsequently in the loop that
"acpi_processor_get_info" does results in returning an error, which
means that "acpi_processor_add" failing and per_cpu(processor)
is never set (and is NULL).
That means that when xen-acpi-processor tries to load (much much
later on) and parse the P-states it gets -ENODEV from
acpi_processor_register_performance() (which tries to read
the per_cpu(processor)) and fails to parse the data.
Reported-by-and-Tested-by: Stefan Bader <stefan.bader@canonical.com>
Suggested-by: Boris Ostrovsky <boris.ostrovsky@amd.com>
[v2: Bit-shift APIC ID by 24 bits]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
It turns out that (quite surprisingly) devres_destroy() only undoes the
devres mapping, it doesn't destroy the underlying resource, meaning that
anything using devm_regulator_put() would leak. While we wait for the new
devres_release() which does what we want to get merged open code it in
devm_regulator_put().
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
The operations in the subsequent error-handling code appear to be also
useful here.
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
[v1: Collapse some of the error handling functions]
[v2: Fix compile warning]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Previous issues with i2c-algo-bit have now been resolved.
This is a revert of f553b79c03 mostly,
due to fixes in the i2c core repairing the original issue, this code
isn't required and was causing regressions.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reported-by: Nick Bowler <nbowler@elliptictech.com>
Tested-by: Nick Bowler <nbowler@elliptictech.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Daniel wrote:
2 little patches:
- One regression fix to disable sdvo hotplug on broken hw.
- One patch to upconvert the snb hang workaround from patch v1 to patch
v2.
* 'drm-intel-fixes' of git://people.freedesktop.org/~danvet/drm-intel:
drm/i915: Do no set Stencil Cache eviction LRA w/a on gen7+
drm/i915: disable sdvo hotplug on i945g/gm
I've flagged this while reviewing the first version and Ken Graunke
fixed it up in v2, but unfortunately Dave Airlie picked up the wrong
version.
Cc: Dave Airlie <airlied@redhat.com>
Cc: Kenneth Graunke <kenneth@whitecape.org>
Cc: stable@kernel.org
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Chris Wilson dug out a hw erratum saying that there's noise on the
interrupt line on i945G chips. We also have a bug report from a i945GM
chip with an sdvo hotplug interrupt storm (and no apparent cause).
Play it safe and disable sdvo hotplug on all i945 variants.
Note that this is a regression that has been introduced in 3.1,
when we've enabled sdvo hotplug support with
commit cc68c81aed
Author: Simon Farnsworth <simon.farnsworth@onelan.co.uk>
Date: Wed Sep 21 17:13:30 2011 +0100
drm/i915: Enable SDVO hotplug interrupts for HDMI and DVI
Cc: stable@kernel.org
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=38442
Reported-and-tested-by: Dominik Köppl <dominik@devwork.org>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-Off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Acer Aspire 5739G requires the same fix-up for 4930G to support the
surround / bass speakers.
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=43180
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Commit ce7e5d2d19 ("x86: fix broken TASK_SIZE for ia32_aout") breaks
kernel builds when "CONFIG_IA32_AOUT=m" with
ERROR: "set_personality_ia32" [arch/x86/ia32/ia32_aout.ko] undefined!
make[1]: *** [__modpost] Error 1
The entry point needs to be exported.
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Acked-by: Al Viro <viro@zeniv.linux.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull x86 fixes form Peter Anvin
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
intel_mid_powerbtn: mark irq as IRQF_NO_SUSPEND
arch/x86/platform/geode/net5501.c: change active_low to 0 for LED driver
x86, relocs: Remove an unused variable
asm-generic: Use __BITS_PER_LONG in statfs.h
x86/amd: Re-enable CPU topology extensions in case BIOS has disabled it
Pull btrfs fixes from Chris Mason:
"The big ones here are a memory leak we introduced in rc1, and a
scheduling while atomic if the transid on disk doesn't match the
transid we expected. This happens for corrupt blocks, or out of date
disks.
It also fixes up the ioctl definition for our ioctl to resolve logical
inode numbers. The __u32 was a merging error and doesn't match what
we ship in the progs."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs:
Btrfs: avoid sleeping in verify_parent_transid while atomic
Btrfs: fix crash in scrub repair code when device is missing
btrfs: Fix mismatching struct members in ioctl.h
Btrfs: fix page leak when allocing extent buffers
Btrfs: Add properly locking around add_root_to_dirty_list
Setting TIF_IA32 in load_aout_binary() used to be enough; these days
TASK_SIZE is controlled by TIF_ADDR32 and that one doesn't get set
there. Switch to use of set_personality_ia32()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It turned to be totally unneeded. The reason the code was introduced is
so that KVM can prefault swapped in page, but prefault can fail even
if mm is pinned since page table can change anyway. KVM handles this
situation correctly though and does not inject spurious page faults.
Fixes:
"INFO: SOFTIRQ-safe -> SOFTIRQ-unsafe lock order detected" warning while
running LTP inside a KVM guest using the recent -next kernel.
Reported-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
If vcpu executes hlt instruction while async PF is waiting to be delivered
vcpu can block and deliver async PF only after another even wakes it
up. This happens because kvm_check_async_pf_completion() will remove
completion event from vcpu->async_pf.done before entering kvm_vcpu_block()
and this will make kvm_arch_vcpu_runnable() return false. The solution
is to make vcpu runnable when processing completion.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Sasha Levin
Konstantin Khlebnikov
Linus Torvalds
Jan Kiszka
Olof Johansson
Enrico Butera
Laxman Dewangan
Takashi Iwai
Guennadi Liakhovetski
Avi Kivity
David Henningsson
Benjamin Herrenschmidt
Ben Hutchings
Ian Campbell
Tejun Heo
David Gibson
Andre Schramm
Andrew Morton
David Vrabel
Konrad Rzeszutek Wilk
Mark Brown
Julia Lawall
Ben Skeggs
Dave Airlie
Daniel Vetter
Larry Finger
Al Viro
Gleb Natapov