just what it sounds like; do that only to procfs subtrees you've
created - doing that to something shared with another driver is
not only antisocial, but might cause interesting races with
proc_create() and its ilk.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
In UP and non-preempt respectively, the spinlocks and preemption
disable/enable points are stubbed out entirely, because there is no
regular code that can ever hit the kind of concurrency they are meant to
protect against.
However, while there is no regular code that can cause scheduling, we
_do_ end up having some exceptional (literally!) code that can do so,
and that we need to make sure does not ever get moved into the critical
region by the compiler.
In particular, get_user() and put_user() is generally implemented as
inline asm statements (even if the inline asm may then make a call
instruction to call out-of-line), and can obviously cause a page fault
and IO as a result. If that inline asm has been scheduled into the
middle of a preemption-safe (or spinlock-protected) code region, we
obviously lose.
Now, admittedly this is *very* unlikely to actually ever happen, and
we've not seen examples of actual bugs related to this. But partly
exactly because it's so hard to trigger and the resulting bug is so
subtle, we should be extra careful to get this right.
So make sure that even when preemption is disabled, and we don't have to
generate any actual *code* to explicitly tell the system that we are in
a preemption-disabled region, we need to at least tell the compiler not
to move things around the critical region.
This patch grew out of the same discussion that caused commits
79e5f05edc ("ARC: Add implicit compiler barrier to raw_local_irq*
functions") and 3e2e0d2c22 ("tile: comment assumption about
__insn_mtspr for <asm/irqflags.h>") to come about.
Note for stable: use discretion when/if applying this. As mentioned,
this bug may never have actually bitten anybody, and gcc may never have
done the required code motion for it to possibly ever trigger in
practice.
Cc: stable@vger.kernel.org
Cc: Steven Rostedt <srostedt@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Marc Kleine-Budde says:
====================
here's a fix for the v3.9 release cycle, if not too late:
Wei Yongjun contributes a patch for the can-gw protocoll. The patch fixes the
memory allocated with kmem_cache_alloc(), is now freed using kmem_cache_free(),
not kfree().
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit 90ba9b1986 (tcp: tcp_make_synack() can use alloc_skb())
broke certain SELinux/NetLabel configurations by no longer correctly
assigning the sock to the outgoing SYNACK packet.
Cost of atomic operations on the LISTEN socket is quite big,
and we would like it to happen only if really needed.
This patch introduces a new security_ops->skb_owned_by() method,
that is a void operation unless selinux is active.
Reported-by: Miroslav Vadkerti <mvadkert@redhat.com>
Diagnosed-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-security-module@vger.kernel.org
Acked-by: James Morris <james.l.morris@oracle.com>
Tested-by: Paul Moore <pmoore@redhat.com>
Acked-by: Paul Moore <pmoore@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Don't hold the NFSv4 sequence id while we check for open permission.
The call to ACCESS may block due to reboot recovery.
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
The arch_local_irq_save(), etc., routines are required to function
as compiler barriers. They do, but it's subtle and requires knowing
that the gcc builtin __insn_mtspr() is marked as a memory clobber.
Provide a comment explaining the assumption.
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
[ This came about from me wondering about the synchronization rules of
__insn_mtspr() - Linus ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This reverts commit bc8ce4 (regmap: don't corrupt work buffer in
_regmap_raw_write()) since it turns out that it can cause issues when
taken in isolation from the other changes in -next that lead to its
discovery. On the basis that nobody noticed the problems for quite some
time without that subsequent work let's drop it from v3.9.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
The Charge Pump needs the DSP clock to work properly, without it the
bypass to HP/LINEOUT is not working properly. This requirement is not
mentioned in the datasheet but has been confirmed by Mark Brown from
Wolfson.
Signed-off-by: Alban Bedel <alban.bedel@avionic-design.de>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Cc: stable@vger.kernel.org
The external pending interrupt register address (EINTPEND) offset is
0xa8, not 0x08. Without this patch the external interrupts are not
properly acknowledged, which may lead to an interrupt storm and the
system hang as soon as any external interrupt is requested.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
Due to NR_IRQS being incorrectly defined not all IRQ domains can
be registered for S3C2440. It causes following errors on a s3c2440
SoC based board:
NR_IRQS:89
S3C2440: IRQ Support
irq: clearing pending status 00000002
------------[ cut here ]------------
WARNING: at kernel/irq/irqdomain.c:234 0xc0056ed0()
...
irq: could not create irq-domain
...
s3c2410-wdt s3c2410-wdt: failed to install irq (-22)
s3c2410-wdt: probe of s3c2410-wdt failed with error -22
...
samsung-uart s3c2440-uart.0: cannot get irq 74
Fix this by increasing NR_IRQS to at least (IRQ_S3C2443_AC97 + 1)
if CPU_S3C2440 is selected, so the subintc IRQ domain gets properly
registered.
Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Acked-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
* A couple imx35 clock fixes for regressions caused by common clock
framework conversion. The admux and iomux get disabled by common
clock framework late initcall, and hence causes problems.
* Add missing twd clock lookup in device tree. This becomes required
since commit bd60345 (ARM: use device tree to get smp_twd clock)
forces all DT boot to find lookup from device tree.
* Fix imx6q ldb_di clock parents mismatch per reference manual.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)
iQEcBAABAgAGBQJRZAZBAAoJEFBXWFqHsHzOy60H/0RIxFO1TSQVVPTuJRtHr9qk
BtszcLOwiRbWipuG1OiosEKXMeOXjAPtOG8P9tReC/oJN4WL5CmGW3PrPQ/9DEbZ
OTYVPhgmGKDB/2n5BVvvTDISTovvlQRju4ht+70j1BnAlpbzGLbKMG4o6zHOROoh
d15dqg/Ny1ovsCvva2ODbwRtBkBaBqDC+RGqNPrhTN7WSk+nv6yITYZCREI1mjGH
RG7B62hn+1aD6tMdigFu9xS4vTkHXjFC0AVEixBEi3iWqofSz3Cb6Zq4MpRGNXGZ
o/tfc4/2q6uF/UEpTQJDhYbHjwesySsIwdu4vsvI2lh9EGqUgyC3YE+VbDwOeGE=
=tztW
-----END PGP SIGNATURE-----
Merge tag 'imx-fixes-3.9-5' of git://git.linaro.org/people/shawnguo/linux-2.6 into fixes
From Shawn Guo <shawn.guo@linaro.org>:
The imx fixes for 3.9, take 5:
* A couple imx35 clock fixes for regressions caused by common clock
framework conversion. The admux and iomux get disabled by common
clock framework late initcall, and hence causes problems.
* Add missing twd clock lookup in device tree. This becomes required
since commit bd60345 (ARM: use device tree to get smp_twd clock)
forces all DT boot to find lookup from device tree.
* Fix imx6q ldb_di clock parents mismatch per reference manual.
* tag 'imx-fixes-3.9-5' of git://git.linaro.org/people/shawnguo/linux-2.6: (217 commits)
ARM i.MX6: Fix ldb_di clock selection
ARM: imx: provide twd clock lookup from device tree
ARM: imx35 Bugfix admux clock
ARM: clk-imx35: Bugfix iomux clock
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
According to the recent i.MX6 Quad technical reference manual, mode 0x4 (100b)
of the CCM_CS2DCR register (address 0x020C402C) bits [11-9] and [14-12] select
the PLL3 clock, and not the PLL3 PFD1 540M clock. In our code, the PLL3 root
clock is named 'pll3_usb_otg', select this instead of the 540M clock.
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
While booting from device tree, imx6q used to provide twd clock lookup
by calling clk_register_clkdev() in clock driver. However, the commit
bd60345 (ARM: use device tree to get smp_twd clock) forces DT boot to
look up the clock from device tree. It causes the failure below when
twd driver tries to get the clock, and hence kernel has to calibrate the
local timer frequency.
smp_twd: clock not found -2
...
Calibrating local timer... 396.13MHz.
Fix the regression by providing twd clock lookup from device tree, and
remove the unused twd clk_register_clkdev() call from clock driver.
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
The admux clock seems to be the audmux clock as tests show. audmux does
not work without this clock enabled. Currently imx35 does not register a
clock device for audmux. This patch adds this registration. imx-audmux
driver already handles a clock device, so no changes are necessary
there.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
This patch enables iomuxc_gate clock. It is necessary to be able to
reconfigure iomux pads. Without this clock enabled, the
clk_disable_unused function will disable this clock and the iomux pads
are not configurable anymore. This happens at every boot. After a reboot
(watchdog system reset) the clock is not enabled again, so all iomux pad
reconfigurations in boot code are without effect.
The iomux pads should be always configurable, so this patch always
enables it.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Memory allocated by kmem_cache_alloc() should be freed using
kmem_cache_free(), not kfree().
Cc: linux-stable <stable@vger.kernel.org> # >= v3.2
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Compiling for linux-3.9-rc1 and later fails with:
drivers/gpio/devres.c: In function 'devm_gpio_request_one':
drivers/gpio/devres.c:90:2: error: implicit declaration of function 'gpio_request_one' [-Werror=implicit-function-declaration]
So provide a local gpio_request_one() function. Code largely borrowed from
blackfin's local gpio_request_one() function.
Signed-off-by: Greg Ungerer <gerg@uclinux.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
sizeof() when applied to a pointer typed expression gives the size of the
pointer, not that of the pointed data.
Introduced by commit 3ce5ef(netrom: fix info leak via msg_name in nr_recvmsg)
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Suman fixed an issue that crawled in with the move to the new
idr_alloc interface in 3.9
- Dmitry fixed an STE specific memory leak
- Sjur fixed an error path in the core
- Rob fixed a Kconfig typo
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=+ds4
-----END PGP SIGNATURE-----
Merge tag 'remoteproc-3.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc
Pull remoteproc fixes from Ohad Ben-Cohen:
"Four small remoteproc fixes:
- Suman fixed an issue that crawled in with the move to the new
idr_alloc interface in 3.9
- Dmitry fixed an STE specific memory leak
- Sjur fixed an error path in the core
- Rob fixed a Kconfig typo"
* tag 'remoteproc-3.9-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ohad/remoteproc:
remoteproc: fix FW_CONFIG typo
remoteproc: fix error path of handle_vdev
remoteproc/ste: fix memory leak on shutdown
remoteproc: fix the error check for idr_alloc
It should be left to the drivers to enable and disable the device on the
MEI bus when e.g getting probed.
For drivers to be able to safely call the enable and disable hooks, the
mei_cl_ops must be set before it's probed and thus this should happen
before registering the device on the MEI bus. Hence the mei_cl_add_device()
prototype change.
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Display errors causing device reset using dev_err and not dev_dbg
also change messages text to something more concise
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
consolidate write code to a specific me client in mei_cl_write function
the function is called from mei device write handler and from
mei_cl bus send function
Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
MAX77693 extcon driver
- Add 'static' keryword to internal data structure
- Fix return value using 'ret' instead of hardcoding
MAX8997 extcon driver
- Use dev_err() instead of pr_err()
- Fix return value using 'ret' instead of hardcoding
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.11 (GNU/Linux)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=vnWV
-----END PGP SIGNATURE-----
Merge tag 'extcon-for-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/chanwoo/extcon into char-misc-next
Chanwoo writes:
This is small fixes for extcon driver.
MAX77693 extcon driver
- Add 'static' keryword to internal data structure
- Fix return value using 'ret' instead of hardcoding
MAX8997 extcon driver
- Use dev_err() instead of pr_err()
- Fix return value using 'ret' instead of hardcoding
too many semicolons.
* 'drm-nouveau-fixes-3.9' of git://anongit.freedesktop.org/git/nouveau/linux-2.6:
drm/nouveau: fix unconditional return waiting on memory
Typo in nv50_display_flip_wait allows page flipping to run ahead before
memory has time to settle.
Signed-off-by: Calvin Owens <jcalvinowens@gmail.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
certain hardware installed.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.19 (GNU/Linux)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=UiUm
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixes
Pull powerpc bugfix from Stephen Rothwell:
"A single BUG_ON fix for a condition that could happen for machines
with certain hardware installed."
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sfr/next-fixes:
powerpc: pSeries_lpar_hpte_remove fails from Adjunct partition being performed before the ANDCOND test
ARC irqsave/restore macros were missing the compiler barrier, causing a
stale load in irq-enabled region be used in irq-safe region, despite
being changed, because the register holding the value was still live.
The problem manifested as random crashes in timer code when stress
testing ARCLinux (3.9-rc3) on a !SMP && !PREEMPT_COUNT
Here's the exact sequence which caused this:
(0). tv1[x] <----> t1 <---> t2
(1). mod_timer(t1) interrupted after it calls timer_pending()
(2). mod_timer(t2) completes
(3). mod_timer(t1) resumes but messes up the list
(4). __runt_timers( ) uses bogus timer_list entry / crashes in
timer->function
Essentially mod_timer() was racing against itself and while the spinlock
serialized the tv1[] timer link list, timer_pending() called outside the
spinlock, cached timer link list element in a register.
With low register pressure (and a deep register file), lack of barrier
in raw_local_irqsave() as well as preempt_disable (!PREEMPT_COUNT
version), there was nothing to force gcc to reload across the spinlock,
causing a stale value in reg be used for link list manipulation - ensuing
a corruption.
ARcompact disassembly which shows the culprit generated code:
mod_timer:
push_s blink
mov_s r13,r0 # timer, timer
..
###### timer_pending( )
ld_s r3,[r13] # <------ <variable>.entry.next LOADED
brne r3, 0, @.L163
.L163:
..
###### spin_lock_irq( )
lr r5, [status32] # flags
bic r4, r5, 6 # temp, flags,
and.f 0, r5, 6 # flags,
flag.nz r4
###### detach_if_pending( ) begins
tst_s r3,r3 <--------------
# timer_pending( ) checks timer->entry.next
# r3 is NOT reloaded by gcc, using stale value
beq.d @.L169
mov.eq r0,0
##### detach_timer( ): __list_del( )
ld r4,[r13,4] # <variable>.entry.prev, D.31439
st r4,[r3,4] # <variable>.prev, D.31439
st r3,[r4] # <variable>.next, D.30246
We initially tried to fix this by adding barrier() to preempt_* macros
for !PREEMPT_COUNT but Linus clarified that it was anything but wrong.
http://www.spinics.net/lists/kernel/msg1512709.html
[vgupta: updated commitlog]
Reported-by/Signed-off-by: Christian Ruppert <christian.ruppert@abilis.com>
Cc: Christian Ruppert <christian.ruppert@abilis.com>
Cc: Pierrick Hascoet <pierrick.hascoet@abilis.com>
Debugged-by/Signed-off-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Return the value obtained from the function instead of hardcoding.
Fixes the following warnings:
drivers/extcon/extcon-max8997.c:235 max8997_muic_set_path() info:
why not propagate 'ret' from max8997_update_reg() instead of (-11)?
drivers/extcon/extcon-max8997.c:248 max8997_muic_set_path() info:
why not propagate 'ret' from max8997_update_reg() instead of (-11)?
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Return the value obtained from the function instead of hardcoding.
Silences the following warnings:
drivers/extcon/extcon-max77693.c:297 max77693_muic_set_path()
info: why not propagate 'ret' from max77693_update_reg() instead of (-11)?
drivers/extcon/extcon-max77693.c:310 max77693_muic_set_path()
info: why not propagate 'ret' from max77693_update_reg() instead of (-11)?
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
dev_err() is more preferred than pr_err().
Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
Commit 0ec83bd246 ("extcon: max77693: Initialize register of MUIC
device to bring up it without platform data") added this structure
but forgot to make it static. Without this patch we get the following
warning:
drivers/extcon/extcon-max77693.c:41:26: warning:
symbol 'default_init_data' was not declared. Should it be static?
Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Myungjoo Ham <myungjoo.ham@samsung.com>
which mistakenly changed an 'int' return type to a 'bool'. Broken
by 4dce8ba94c.
2) Add Slimtype DVD A DS8A8SH ATAPI quirk
3) ata_piix: Intel Haswell platform quirk
4) Avoid DMA'ing to stack buffer, when obtaining DEVSLP timings.
IMO a mild regression, given that libata previously did not DMA to a stack
buffer. Broken by 803739d2.
5) Fix regression impacting SMART and smartd, broken by 84a9a8cd9.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.13 (GNU/Linux)
iQIVAwUAUWMoWSWzCDIBeCsvAQIFDhAA1ISwRA0681bZiTfJskaRcHPy7HkFP3Df
VRmfsqsoNignQVddAbrGpYYt27NASZsTycQ8TGAUkPVVGFm7w0BOj9abxzPvBCoC
pg3rJaBHyfXjjLXxSDjk6HxqjnEsgwiIeXvx5vtUCuinfMTdDkJdIHIuIHhL2SzC
x39GfCf3O+mtzHYxqTu4X7QXwirJFMsMG5/ZBa1RCVfFGzqzlVyQXeRlEGLZ6wmI
YJHId0LKUUZhYURvmlqTVQm9PEu8WsgS0lNqhHkwrj87Qi3jSwDQW/RnHPwUf5gG
VHZHGVVu5FRkrDZsGjYdvQyZd9oywcbCIL7oK2mGe4V8Vnxii1KHlI8x08YSOjYX
ASY5koJivzyLrCcwIqIsfHvk1+D0yZUjhfQSAqhi509h8Tc9Ge6V83XmAhRXy3b5
nO/+b63qMYxAiMTJyIw7BRQcYpOiU/Nohi2ieGY4tUPw4aBhU61Hnmkhy/YME5P4
nhKZwfNquXXN71WCV+xnchRIuw08EN9zUaeG5vGGnXYKoiIrlId//eyVgtcerh3e
lFiuOQAoAY6PIZsnMQU8Z2toL5yXFkLWxmNDYi7RIIai3yChOtxyMTuXEOSKPpG/
rgEy5p5lchhRXzqpC7KhU53uVA14ePPs6LIUoRNiqtGIf+B1nTjUYmKZPTPEzNA9
ftOvFkMHfmQ=
=Jhsf
-----END PGP SIGNATURE-----
Merge tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev
Pull libata fixes from Jeff Garzik:
"The HDIO_DRIVE_* fix is really the biggie.
1) Fix ATAPI regression, noticed mainly on tape drives, due to a
commit which mistakenly changed an 'int' return type to a 'bool'.
Broken by commit 4dce8ba94c ("libata: Use 'bool' return value for
ata_id_XXX")
2) Add Slimtype DVD A DS8A8SH ATAPI quirk
3) ata_piix: Intel Haswell platform quirk
4) Avoid DMA'ing to stack buffer, when obtaining DEVSLP timings. IMO
a mild regression, given that libata previously did not DMA to a
stack buffer. Broken by commit commit 803739d25c ("[libata]
replace sata_settings with devslp_timing")
5) Fix regression impacting SMART and smartd, broken by commit
84a9a8cd9d ("[libata] Set proper SK when CK_COND is set")"
* tag 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
[libata] Fix HDIO_DRIVE_* ioctl() Linux 3.9 regression
libata: fix DMA to stack in reading devslp_timing parameters
ata_piix: Fix DVD not dectected at some Haswell platforms
libata: Set max sector to 65535 for Slimtype DVD A DS8A8SH drive
libata: Use integer return value for atapi_command_packet_set
fixes a long time minor bug.
The first patch fixes a race that can happen if the user switches
from the irqsoff tracer to another tracer. If a irqs off latency is
detected, it will try to use the snapshot buffer, but the new tracer
wont have it allocated. There's a nasty warning that gets printed and
the trace is ignored. Nothing crashes, just a nasty WARN_ON is shown.
The second patch fixes an issue where if the sysctl is used to disable
and enable function tracing, it can put the function tracing into an
unstable state.
The third patch fixes an issue with perf using the function tracer.
An update was done, where the stub function could be called during
the perf function tracing, and that stub function wont have the
"control" flag set and cause a nasty warning when running perf.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.12 (GNU/Linux)
iQEcBAABAgAGBQJRYyyXAAoJEOdOSU1xswtMMtQH/0Ks494IyC9zAcSFZXJGagc2
bV1k2WrHUuXZnDEP3DIrwS87YwYOYD6l/7TW7AUc2AsFIgwsQ8tP+riI2FZVduAs
LLKR3NxE8B8hi+QS7fbEXea6jcRX2I+gnsv8bLenDVbliCWs1wZbSo8jbyOFjpKa
AWRpjIIBmKYB/dGn87YVOLAYHiMUO5WScKwJV0bCL9m5r2/7a1nu1j8KiQ9N0Vun
43jimIHYDlI/eSOGNIJPFAc/zjPXlPDFrpGcPg6wgUDfwSO0Cbz2PM46uxen+s91
Z4mbiqEONSTcl/wKYx9s6zRY+brkvP3AK0d1x1Al+TkTeFeaVPkTwmKSI/e46ow=
=9Ide
-----END PGP SIGNATURE-----
Merge tag 'trace-fixes-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"This includes three fixes. Two fix features added in 3.9 and one
fixes a long time minor bug.
The first patch fixes a race that can happen if the user switches from
the irqsoff tracer to another tracer. If a irqs off latency is
detected, it will try to use the snapshot buffer, but the new tracer
wont have it allocated. There's a nasty warning that gets printed and
the trace is ignored. Nothing crashes, just a nasty WARN_ON is shown.
The second patch fixes an issue where if the sysctl is used to disable
and enable function tracing, it can put the function tracing into an
unstable state.
The third patch fixes an issue with perf using the function tracer.
An update was done, where the stub function could be called during the
perf function tracing, and that stub function wont have the "control"
flag set and cause a nasty warning when running perf."
* tag 'trace-fixes-3.9-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
ftrace: Do not call stub functions in control loop
ftrace: Consistently restore trace function on sysctl enabling
tracing: Fix race with update_max_tr_single and changing tracers
Any recovery thread will deadlock when calling qeth_wait_for_threads(), most
notably when triggering a recovery on an OSN device.
This patch will store the recovery thread's task pointer on recovery
invocation and check in qeth_wait_for_threads() respectively to avoid
deadlocks.
Signed-off-by: Stefan Raspl <raspl@linux.vnet.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Reviewed-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When receiving data messages, the "BUG_ON(skb->len < skb->data_len)" in
the skb_pull() function triggers a kernel panic.
Replace the skb_pull logic by a per skb offset as advised by
Eric Dumazet.
Signed-off-by: Ursula Braun <ursula.braun@de.ibm.com>
Signed-off-by: Frank Blaschka <blaschka@linux.vnet.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch fixes guest hang when booting seabios and guest.
[ 0.576238] scsi0 : Virtio SCSI HBA
[ 0.616754] virtio_scsi virtio1: request:id 0 is not a head!
vq->last_used_idx is initialized only when /dev/vhost-scsi is
opened or closed.
vhost_scsi_open -> vhost_dev_init() -> vhost_vq_reset()
vhost_scsi_release() -> vhost_dev_cleanup -> vhost_vq_reset()
So, when guest talks to tcm_vhost after seabios does, vq->last_used_idx
still contains the old valule for seabios. This confuses guest.
Fix this by calling vhost_init_used() to init vq->last_used_idx when
we set endpoint.
Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Currently, vs->vs_endpoint is used indicate if the endpoint is setup or
not. It is set or cleared in vhost_scsi_set_endpoint() or
vhost_scsi_clear_endpoint() under the vs->dev.mutex lock. However, when
we check it in vhost_scsi_handle_vq(), we ignored the lock.
Instead of using the vs->vs_endpoint and the vs->dev.mutex lock to
indicate the status of the endpoint, we use per virtqueue
vq->private_data to indicate it. In this way, we can only take the
vq->mutex lock which is per queue and make the concurrent multiqueue
process having less lock contention. Further, in the read side of
vq->private_data, we can even do not take the lock if it is accessed in
the vhost worker thread, because it is protected by "vhost rcu".
(nab: Do s/VHOST_FEATURES/~VHOST_SCSI_FEATURES)
Signed-off-by: Asias He <asias@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
While the bonding module is unloading, it is considered that after
rtnl_link_unregister all bond devices are destroyed but since no
synchronization mechanism exists, a new bond device can be created
via bonding_masters before unregister_pernet_subsys which would
lead to multiple problems (e.g. NULL pointer dereference, wrong RIP,
list corruption).
This patch fixes the issue by removing any bond devices left in the
netns after bonding_masters is removed from sysfs.
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Acked-by: Veaceslav Falico <vfalico@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This reverts commit 4de79c737b.
This patch introduces a new bug which causes access to freed memory.
In bond_uninit: list_del(&bond->bond_list);
bond_list is linked in bond_net's dev_list which is freed by
unregister_pernet_subsys.
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
John W. Linville says:
====================
For the cfg80211 fix, Johannes says:
"I have another straggler for 3.9, adding locking forgotten in a previous
fix."
On top of that:
Bing Zhao provides an mwifiex fix to properly order a scan completion.
Franky Lin gives us a brcmfmac fix to fail at the firmware loading
stage if the nvram cannot be downloaded.
Gabor Juhos brings what at first looks like a rather big rt2x00 patch.
I think it is OK because it is really just reorganizing some code
within the rt2x00 driver in order to fix a build failure.
Hante Meuleman offers a trio of brcmfmac fixes related to running in
AP mode.
Robert Shade sends an ath9k fix to reenable interrupts even if a
channel change fails.
Tim Gardner gives us an rt2x00 fix to cut-down on some log SPAM.
Please let me know if there are problems!
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
As commit 40dc166c (PM / Core: Introduce struct syscore_ops for core
subsystems PM) say, syscore_ops operations should be carried with one
CPU on-line and interrupts disabled. However, after commit f96972f2d
(kernel/sys.c: call disable_nonboot_cpus() in kernel_restart()),
syscore_shutdown() is called before disable_nonboot_cpus(), so break
the rules. We have a MIPS machine with a 8259A PIC, and there is an
external timer (HPET) linked at 8259A. Since 8259A has been shutdown
too early (by syscore_shutdown()), disable_nonboot_cpus() runs without
timer interrupt, so it hangs and reboot fails. This patch call
syscore_shutdown() a little later (after disable_nonboot_cpus()) to
avoid reboot failure, this is the same way as poweroff does.
For consistency, add disable_nonboot_cpus() to kernel_halt().
Signed-off-by: Huacai Chen <chenhc@lemote.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
The current calculation of the delay time is wrong and a cut and
paste error from a previous experimental driver. This can result in
the timeout being set to jiffies + 1 which setup the driver to race
with itself if the APIC timer interrupt happens at just the right
time.
References: https://bugzilla.redhat.com/show_bug.cgi?id=920289
Reported-by: Adam Williamson <awilliam@redhat.com>
Reported-and-tested-by: Parag Warudkar <parag.lkml@gmail.com>
Signed-off-by: Dirk Brandewie <dirk.j.brandewie@intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
There is a bug in resources deallocation code in mxser_probe() and
mxser_module_init(). As soon as variable 'i' is unsigned int, cycle
termination condition i >= 0 is always true. The patch fixes the issue.
Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This reverts commit 77e372a3d8.
Checking for disabled resources board breaks detection pnp on another
board "AMI UEFI implementation (Version: 0406 Release Date: 06/06/2012)".
I'm working with the reporter of the original bug to write and test
a better fix.
https://bugzilla.redhat.com/show_bug.cgi?id=928246
Signed-off-by: Sean Young <sean@mess.org>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Al Viro