| Age | Commit message (Collapse) | Author |
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git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc into perf/core
Pull uprobes fixes + cleanups from Oleg Nesterov.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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As Oleg pointed out in [0] uprobe should not use the ptrace interface
for enabling/disabling single stepping.
[0] http://lkml.kernel.org/r/20120730141638.GA5306@redhat.com
Add the new "__weak arch" helpers which simply call user_*_single_step()
as a preparation. This is only needed to not break the powerpc port, we
will fold this logic into arch_uprobe_pre/post_xol() hooks later.
We should also change handle_singlestep(), _disable_step(&uprobe->arch)
should be called before put_uprobe().
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
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Add the new MMF_RECALC_UPROBES flag, it means that MMF_HAS_UPROBES
can be false positive after remove_breakpoint() or uprobe_munmap().
It is also set by uprobe_dup_mmap(), this is not optimal but simple.
We could add the new hook, uprobe_dup_vma(), to set MMF_HAS_UPROBES
only if the new mm actually has uprobes, but I don't think this
makes sense.
The next patch will use this flag to clear MMF_HAS_UPROBES.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
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Steve Rostedt asked for the merge of a single commit, into both
the RCU and the perf/tracing tree:
| Josh made a change to the tracing code that affects both the
| work Paul McKenney and I are currently doing. At the last
| Kernel Summit back in August, Linus said when such a case
| exists, it is best to make a separate branch based off of his
| tree and place the change there. This way, the repositories
| that need to share the change can both pull them in and the
| SHA1 will match for both. Whichever branch is pulled in first
| by Linus will also pull in the necessary change for the other
| branch as well.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Tracepoints declare a static inline trace_*_rcuidle variant of the trace
function, to support safely generating trace events from the idle loop.
Module code never actually uses that variant of trace functions, because
modules don't run code that needs tracing with RCU idled. However, the
declaration of those otherwise unused functions causes the module to
reference rcu_idle_exit and rcu_idle_enter, which RCU does not export to
modules.
To avoid this, don't generate trace_*_rcuidle functions for tracepoints
declared in module code.
Link: http://lkml.kernel.org/r/20120905062306.GA14756@leaf
Reported-by: Steven Rostedt <rostedt@goodmis.org>
Acked-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull a hwmon fix from Guenter Roeck:
"One patch, fixing DIV_ROUND_CLOSEST to support negative dividends.
While the changes are not in the drivers/hwmon directory, the problem
primarily affects hwmon drivers, and it makes sense to push the patch
through the hwmon tree."
* tag 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
linux/kernel.h: Fix DIV_ROUND_CLOSEST to support negative dividends
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git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc
Pull MMC fixes from Chris Ball:
- a firmware bug on several Samsung MoviNAND eMMC models causes
permanent corruption on the device when secure erase and secure trim
requests are made, so we disable those requests on these eMMC devices.
- atmel-mci: fix a hang with some SD cards by waiting for not-busy flag.
- dw_mmc: low-power mode breaks SDIO interrupts; fix PIO error handling;
fix handling of error interrupts.
- mxs-mmc: fix deadlocks; fix compile error due to dma.h arch change.
- omap: fix broken PIO mode causing memory corruption.
- sdhci-esdhc: fix card detection.
* tag 'mmc-fixes-for-3.6-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc:
mmc: omap: fix broken PIO mode
mmc: card: Skip secure erase on MoviNAND; causes unrecoverable corruption.
mmc: dw_mmc: Disable low power mode if SDIO interrupts are used
mmc: dw_mmc: fix error handling in PIO mode
mmc: dw_mmc: correct mishandling error interrupt
mmc: dw_mmc: amend using error interrupt status
mmc: atmel-mci: not busy flag has also to be used for read operations
mmc: sdhci-esdhc: break out early if clock is 0
mmc: mxs-mmc: fix deadlock caused by recursion loop
mmc: mxs-mmc: fix deadlock in SDIO IRQ case
mmc: bfin_sdh: fix dma_desc_array build error
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For several MoviNAND eMMC parts, there are known issues with secure
erase and secure trim. For these specific MoviNAND devices, we skip
these operations.
Specifically, there is a bug in the eMMC firmware that causes
unrecoverable corruption when the MMC is erased with MMC_CAP_ERASE
enabled.
References:
http://forum.xda-developers.com/showthread.php?t=1644364
https://plus.google.com/111398485184813224730/posts/21pTYfTsCkB#111398485184813224730/posts/21pTYfTsCkB
Signed-off-by: Ian Chen <ian.cy.chen@samsung.com>
Reviewed-by: Namjae Jeon <linkinjeon@gmail.com>
Acked-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: stable <stable@vger.kernel.org> [3.0+]
Signed-off-by: Chris Ball <cjb@laptop.org>
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Pull networking fixes from David Miller:
1) NLA_PUT* --> nla_put_* conversion got one case wrong in
nfnetlink_log, fix from Patrick McHardy.
2) Missed error return check in ipw2100 driver, from Julia Lawall.
3) PMTU updates in ipv4 were setting the expiry time incorrectly, fix
from Eric Dumazet.
4) SFC driver erroneously reversed src and dst when reporting filters
via ethtool.
5) Memory leak in CAN protocol and wrong setting of IRQF_SHARED in
sja1000 can platform driver, from Alexey Khoroshilov and Sven
Schmitt.
6) Fix multicast traffic scaling regression in ipv4_dst_destroy, only
take the lock when we really need to. From Eric Dumazet.
7) Fix non-root process spoofing in netlink, from Pablo Neira Ayuso.
8) CWND reduction in TCP is done incorrectly during non-SACK recovery,
fix from Yuchung Cheng.
9) Revert netpoll change, and fix what was actually a driver specific
problem. From Amerigo Wang. This should cure bootup hangs with
netconsole some people reported.
10) Fix xen-netfront invoking __skb_fill_page_desc() with a NULL page
pointer. From Ian Campbell.
11) SIP NAT fix for expectiontation creation, from Pablo Neira Ayuso.
12) __ip_rt_update_pmtu() needs RCU locking, from Eric Dumazet.
13) Fix usbnet deadlock on resume, can't use GFP_KERNEL in this
situation. From Oliver Neukum.
14) The davinci ethernet driver triggers an OOPS on removal because it
frees an MDIO object before unregistering it. Fix from Bin Liu.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (41 commits)
net: qmi_wwan: add several new Gobi devices
fddi: 64 bit bug in smt_add_para()
net: ethernet: fix kernel OOPS when remove davinci_mdio module
net/xfrm/xfrm_state.c: fix error return code
net: ipv6: fix error return code
net: qmi_wwan: new device: Foxconn/Novatel E396
usbnet: fix deadlock in resume
cs89x0 : packet reception not working
netfilter: nf_conntrack: fix racy timer handling with reliable events
bnx2x: Correct the ndo_poll_controller call
bnx2x: Move netif_napi_add to the open call
ipv4: must use rcu protection while calling fib_lookup
bnx2x: fix 57840_MF pci id
net: ipv4: ipmr_expire_timer causes crash when removing net namespace
e1000e: DoS while TSO enabled caused by link partner with small MSS
l2tp: avoid to use synchronize_rcu in tunnel free function
gianfar: fix default tx vlan offload feature flag
netfilter: nf_nat_sip: fix incorrect handling of EBUSY for RTCP expectation
xen-netfront: use __pskb_pull_tail to ensure linear area is big enough on RX
netfilter: nfnetlink_log: fix error return code in init path
...
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DIV_ROUND_CLOSEST returns a bad result for negative dividends:
DIV_ROUND_CLOSEST(-2, 2) = 0
Most of the time this does not matter. However, in the hardware monitoring
subsystem, DIV_ROUND_CLOSEST is sometimes used on integers which can be
negative (such as temperatures).
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Jean Delvare <khali@linux-fr.org>
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Andreas Bombe reported that the added ktime_t overflow checking added to
timespec_valid in commit 4e8b14526ca7 ("time: Improve sanity checking of
timekeeping inputs") was causing problems with X.org because it caused
timeouts larger then KTIME_T to be invalid.
Previously, these large timeouts would be clamped to KTIME_MAX and would
never expire, which is valid.
This patch splits the ktime_t overflow checking into a new
timespec_valid_strict function, and converts the timekeeping codes
internal checking to use this more strict function.
Reported-and-tested-by: Andreas Bombe <aeb@debian.org>
Cc: Zhouping Liu <zliu@redhat.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: stable@vger.kernel.org
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Existing code assumes that del_timer returns true for alive conntrack
entries. However, this is not true if reliable events are enabled.
In that case, del_timer may return true for entries that were
just inserted in the dying list. Note that packets / ctnetlink may
hold references to conntrack entries that were just inserted to such
list.
This patch fixes the issue by adding an independent timer for
event delivery. This increases the size of the ecache extension.
Still we can revisit this later and use variable size extensions
to allocate this area on demand.
Tested-by: Oliver Smith <olipro@8.c.9.b.0.7.4.0.1.0.0.2.ip6.arpa>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Commit c3def943c7117d42caaed3478731ea7c3c87190e have added support for
new pci ids of the 57840 board, while failing to change the obsolete value
in 'pci_ids.h'.
This patch does so, allowing the probe of such devices.
Signed-off-by: Yuval Mintz <yuvalmin@broadcom.com>
Signed-off-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Pull drm fixes from Dave Airlie:
"A bunch of scattered fixes ati/intel/nouveau, couple of core ones,
nothing too shocking or different."
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
drm: Add EDID_QUIRK_FORCE_REDUCED_BLANKING for ASUS VW222S
gma500: Consider CRTC initially active.
drm/radeon: fix dig encoder selection on DCE61
drm/radeon: fix double free in radeon_gpu_reset
drm/radeon: force dma32 to fix regression rs4xx,rs6xx,rs740
drm/radeon: rework panel mode setup
drm/radeon/atom: powergating fixes for DCE6
drm/radeon/atom: rework DIG modesetting on DCE3+
drm/radeon: don't disable plls that are in use by other crtcs
drm/radeon: add proper checking of RESOLVE_BOX command for r600-r700
drm/radeon: initialize tracked CS state
drm/radeon: fix reading CB_COLORn_MASK from the CS
drm/nvc0/copy: check PUNITS to determine which copy engines are disabled
i915: Quirk no_lvds on Gigabyte GA-D525TUD ITX motherboard
drm/i915: Use the correct size of the GTT for placing the per-process entries
drm: Check for invalid cursor flags
drm: Initialize object type when using DRM_MODE() macro
drm/i915: fix color order for BGR formats on IVB
drm/i915: fix wrong order of parameters in port checking functions
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Nobody does set_orig_insn(verify => false), and I think nobody will.
Remove this argument. IIUC set_orig_insn(verify => false) was needed
to single-step without xol area.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
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Now that we have uprobe_dup_mmap() we can fold uprobe_reset_state()
into the new hook and remove it. mmput()->uprobe_clear_state() can't
be called before dup_mmap().
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
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Add the new MMF_HAS_UPROBES flag. It is set by install_breakpoint()
and it is copied by dup_mmap(), uprobe_pre_sstep_notifier() checks
it to avoid the slow path if the task was never probed. Perhaps it
makes sense to check it in valid_vma(is_register => false) as well.
This needs the new dup_mmap()->uprobe_dup_mmap() hook. We can't use
uprobe_reset_state() or put MMF_HAS_UPROBES into MMF_INIT_MASK, we
need oldmm->mmap_sem to avoid the race with uprobe_register() or
mmap() from another thread.
Currently we never clear this bit, it can be false-positive after
uprobe_unregister() or uprobe_munmap() or if dup_mmap() hits the
probed VM_DONTCOPY vma. But this is fine correctness-wise and has
no effect unless the task hits the non-uprobe breakpoint.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
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uprobes_state->count is only needed to avoid the slow path in
uprobe_pre_sstep_notifier(). It is also checked in uprobe_munmap()
but ironically its only goal to decrement this counter. However,
it is very broken. Just some examples:
- uprobe_mmap() can race with uprobe_unregister() and wrongly
increment the counter if it hits the non-uprobe "int3". Note
that install_breakpoint() checks ->consumers first and returns
-EEXIST if it is NULL.
"atomic_sub() if error" in uprobe_mmap() looks obviously wrong
too.
- uprobe_munmap() can race with uprobe_register() and wrongly
decrement the counter by the same reason.
- Suppose an appication tries to increase the mmapped area via
sys_mremap(). vma_adjust() does uprobe_munmap(whole_vma) first,
this can nullify the counter temporarily and race with another
thread which can hit the bp, the application will be killed by
SIGTRAP.
- Suppose an application mmaps 2 consecutive areas in the same file
and one (or both) of these areas has uprobes. In the likely case
mmap_region()->vma_merge() suceeds. Like above, this leads to
uprobe_munmap/uprobe_mmap from vma_merge()->vma_adjust() but then
mmap_region() does another uprobe_mmap(resulting_vma) and doubles
the counter.
This patch only removes this counter and fixes the compile errors,
then we will try to cleanup the changed code and add something else
instead.
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
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Pick up the latest fixes because upcoming uprobes changes will rely on it.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm-soc fixes from Arnd Bergmann:
"Bug fixes for various ARM platforms. About half of these are for OMAP
and submitted before but did not make it into v3.6-rc2."
* tag 'fixes-3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (39 commits)
ARM: ux500: don't select LEDS_GPIO for snowball
ARM: imx: build i.MX6 functions only when needed
ARM: imx: select CPU_FREQ_TABLE when needed
ARM: imx: fix ksz9021rn_phy_fixup
ARM: imx: build pm-imx5 code only when PM is enabled
ARM: omap: allow building omap44xx without SMP
ARM: dts: imx51-babbage: fix esdhc cd/wp properties
ARM: imx6: spin the cpu until hardware takes it down
ARM: ux500: Ensure probing of Audio devices when Device Tree is enabled
ARM: ux500: Fix merge error, no matching driver name for 'snd_soc_u8500'
ARM i.MX6q: Add virtual 1/3.5 dividers in the LDB clock path
ARM: Kirkwood: fix Makefile.boot
ARM: Kirkwood: Fix iconnect leds
ARM: Orion: Set eth packet size csum offload limit
ARM: mv78xx0: fix win_cfg_base prototype
ARM: OMAP: dmtimers: Fix locking issue in omap_dm_timer_request*()
ARM: mmp: fix potential NULL dereference
ARM: OMAP4: Register the OPP table only for 4430 device
cpufreq: OMAP: Handle missing frequency table on SMP systems
ARM: OMAP4: sleep: Save the complete used register stack frame
...
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git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen
Pull three xen bug-fixes from Konrad Rzeszutek Wilk:
- Revert the kexec fix which caused on non-kexec shutdowns a race.
- Reuse existing P2M leafs - instead of requiring to allocate a large
area of bootup virtual address estate.
- Fix a one-off error when adding PFNs for balloon pages.
* tag 'stable/for-linus-3.6-rc3-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
xen/setup: Fix one-off error when adding for-balloon PFNs to the P2M.
xen/p2m: Reuse existing P2M leafs if they are filled with 1:1 PFNs or INVALID.
Revert "xen PVonHVM: move shared_info to MMIO before kexec"
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Pull block-related fixes from Jens Axboe:
- Improvements to the buffered and direct write IO plugging from
Fengguang.
- Abstract out the mapping of a bio in a request, and use that to
provide a blk_bio_map_sg() helper. Useful for mapping just a bio
instead of a full request.
- Regression fix from Hugh, fixing up a patch that went into the
previous release cycle (and marked stable, too) attempting to prevent
a loop in __getblk_slow().
- Updates to discard requests, fixing up the sizing and how we align
them. Also a change to disallow merging of discard requests, since
that doesn't really work properly yet.
- A few drbd fixes.
- Documentation updates.
* 'for-linus' of git://git.kernel.dk/linux-block:
block: replace __getblk_slow misfix by grow_dev_page fix
drbd: Write all pages of the bitmap after an online resize
drbd: Finish requests that completed while IO was frozen
drbd: fix drbd wire compatibility for empty flushes
Documentation: update tunable options in block/cfq-iosched.txt
Documentation: update tunable options in block/cfq-iosched.txt
Documentation: update missing index files in block/00-INDEX
block: move down direct IO plugging
block: remove plugging at buffered write time
block: disable discard request merge temporarily
bio: Fix potential memory leak in bio_find_or_create_slab()
block: Don't use static to define "void *p" in show_partition_start()
block: Add blk_bio_map_sg() helper
block: Introduce __blk_segment_map_sg() helper
fs/block-dev.c:fix performance regression in O_DIRECT writes to md block devices
block: split discard into aligned requests
block: reorganize rounding of max_discard_sectors
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Thomas Gleixner:
"Mostly small fixes for the fallout of the timekeeping overhaul in 3.6
along with stable fixes to address an accumulation problem and missing
sanity checks for RTC readouts and user space provided values."
* 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
time: Avoid making adjustments if we haven't accumulated anything
time: Avoid potential shift overflow with large shift values
time: Fix casting issue in timekeeping_forward_now
time: Ensure we normalize the timekeeper in tk_xtime_add
time: Improve sanity checking of timekeeping inputs
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Signed-off-by: Jakob Bornecrantz <jakob@vmware.com>
Cc: stable@vger.kernel.org
Signed-off-by: Dave Airlie <airlied@redhat.com>
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DRM_MODE() macro doesn't initialize the type of the base drm object.
When a copy is made of the mode, the object type is overwritten with
zero, and the the object can no longer be found by
drm_mode_object_find() due to the type check failing.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Small platform specific bug fixes for problems found in randconfig builds.
* randconfig/mach:
ARM: ux500: don't select LEDS_GPIO for snowball
ARM: imx: build i.MX6 functions only when needed
ARM: imx: select CPU_FREQ_TABLE when needed
ARM: imx: fix ksz9021rn_phy_fixup
ARM: imx: build pm-imx5 code only when PM is enabled
ARM: omap: allow building omap44xx without SMP
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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The new omap4 cpuidle implementation currently requires
ARCH_NEEDS_CPU_IDLE_COUPLED, which only works on SMP.
This patch makes it possible to build a non-SMP kernel
for that platform. This is not normally desired for
end-users but can be useful for testing.
Without this patch, building rand-0y2jSKT results in:
drivers/cpuidle/coupled.c: In function 'cpuidle_coupled_poke':
drivers/cpuidle/coupled.c:317:3: error: implicit declaration of function '__smp_call_function_single' [-Werror=implicit-function-declaration]
It's not clear if this patch is the best solution for
the problem at hand. I have made sure that we can now
build the kernel in all configurations, but that does
not mean it will actually work on an OMAP44xx.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Tested-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Kevin Hilman <khilman@ti.com>
Cc: Tony Lindgren <tony@atomide.com>
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git://git.linaro.org/people/shawnguo/linux-2.6 into fixes
* 'imx/fixes-for-3.6' of git://git.linaro.org/people/shawnguo/linux-2.6:
ARM: dts: imx51-babbage: fix esdhc cd/wp properties
ARM: imx6: spin the cpu until hardware takes it down
ARM i.MX6q: Add virtual 1/3.5 dividers in the LDB clock path
Also updates to Linux 3.6-rc2
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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Stashing version 4 under version 3 and removing version 4, because both
version changes were within single patchset.
Reported-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arun Sharma <asharma@fb.com>
Cc: Benjamin Redelings <benjamin.redelings@nescent.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Cyrill Gorcunov <gorcunov@openvz.org>
Cc: Frank Ch. Eigler <fche@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Robert Richter <robert.richter@amd.com>
Cc: Stephane Eranian <eranian@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tom Zanussi <tzanussi@gmail.com>
Cc: Ulrich Drepper <drepper@gmail.com>
Link: http://lkml.kernel.org/r/20120822083540.GB1003@krava.brq.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Pull drm fixes from Dave Airlie:
"Intel: edid fixes, power consumption fix, s/r fix, haswell fix
Radeon: BIOS loading fixes for UEFI and Thunderbolt machines, better
MSAA validation, lockup timeout fixes, modesetting fixes
One udl dpms fix, one vmwgfx fix, a couple of trivial core changes.
There is an export added to ACPI as part of the radeon bios fixes.
I've also included the fbcon flashing cursor vs deinit race fix, that
seems the simplest place to start"
Trivial conflict in drivers/video/console/fbcon.c due to me having
already applied the fbcon flashing cursor vs deinit race fix, and Dave
had added a comment in there too.
* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux: (22 commits)
fbcon: fix race condition between console lock and cursor timer (v1.1)
drm: Add missing static storage class specifiers in drm_proc.c file
drm/udl: dpms off the crtc when disabled.
drm: Remove two unused fields from struct drm_display_mode
drm: stop vmgfx driver explosion
drm/radeon/ss: use num_crtc rather than hardcoded 6
Revert "drm/radeon: fix bo creation retry path"
drm/i915: use hsw rps tuning values everywhere on gen6+
drm/radeon: split ATRM support out from the ATPX handler (v3)
drm/radeon: convert radeon vfct code to use acpi_get_table_with_size
ACPI: export symbol acpi_get_table_with_size
drm/radeon: implement ACPI VFCT vbios fetch (v3)
drm/radeon/kms: extend the Fujitsu D3003-S2 board connector quirk to cover later silicon stepping
drm/radeon: fix checking of MSAA renderbuffers on r600-r700
drm/radeon: allow CMASK and FMASK in the CS checker on r600-r700
drm/radeon: init lockup timeout on ring init
drm/radeon: avoid turning off spread spectrum for used pll
drm/i915: fall back to bit-banging if GMBUS fails in CRT EDID reads
drm/i915: extract connector update from intel_ddc_get_modes() for reuse
drm/i915: fix hsw uncached pte
...
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Pull SCSI target fixes from Nicholas Bellinger:
"The executive summary includes:
- Post-merge review comments for tcm_vhost (MST + nab)
- Avoid debugging overhead when not debugging for tcm-fc(FCoE) (MDR)
- Fix NULL pointer dereference bug on alloc_page failulre (Yi Zou)
- Fix REPORT_LUNs regression bug with pSCSI export (AlexE + nab)
- Fix regression bug with handling of zero-length data CDBs (nab)
- Fix vhost_scsi_target structure alignment (MST)
Thanks again to everyone who contributed a bugfix patch, gave review
feedback on tcm_vhost code, and/or reported a bug during their own
testing over the last weeks.
There is one other outstanding bug reported by Roland recently related
to SCSI transfer length overflow handling, for which the current
proposed bugfix has been left in queue pending further testing with
other non iscsi-target based fabric drivers.
As the patch is verified with loopback (local SGL memory from SCSI
LLD) + tcm_qla2xxx (TCM allocated SGL memory mapped to PCI HW) fabric
ports, it will be included into the next 3.6-rc-fixes PULL request."
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending:
target: Remove unused se_cmd.cmd_spdtl
tcm_fc: rcu_deref outside rcu lock/unlock section
tcm_vhost: Fix vhost_scsi_target structure alignment
target: Fix regression bug with handling of zero-length data CDBs
target/pscsi: Fix bug with REPORT_LUNs handling for SCSI passthrough
tcm_vhost: Change vhost_scsi_target->vhost_wwpn to char *
target: fix NULL pointer dereference bug alloc_page() fails to get memory
tcm_fc: Avoid debug overhead when not debugging
tcm_vhost: Post-merge review changes requested by MST
tcm_vhost: Fix incorrect IS_ERR() usage in vhost_scsi_map_iov_to_sgl
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Pull NFS client bugfixes from Trond Myklebust:
- NFSv3 mounts need to fail if the FSINFO rpc call fails
- Ensure that the NFS commit cache gets torn down when we unload the
NFS module.
- Fix memory scribble issues when interrupting a LAYOUTGET rpc call
- Fix NFSv4 legacy idmapper regressions
- Fix issues with the NFSv4 getacl command
- Fix a regression when using the legacy "mount -t nfs4"
* tag 'nfs-for-3.6-3' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
NFSv3: Ensure that do_proc_get_root() reports errors correctly
NFSv4: Ensure that nfs4_alloc_client cleans up on error.
NFS: return -ENOKEY when the upcall fails to map the name
NFS: Clear key construction data if the idmap upcall fails
NFSv4: Don't use private xdr_stream fields in decode_getacl
NFSv4: Fix the acl cache size calculation
NFSv4: Fix pointer arithmetic in decode_getacl
NFS: Alias the nfs module to nfs4
NFS: Fix a regression when loading the NFS v4 module
NFSv4.1: Remove a bogus BUG_ON() in nfs4_layoutreturn_done
pnfs-obj: Better IO pattern in case of unaligned offset
NFS41: add pg_layout_private to nfs_pageio_descriptor
pnfs: nfs4_proc_layoutget returns void
pnfs: defer release of pages in layoutget
nfs: tear down caches in nfs_init_writepagecache when allocation fails
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git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull assorted fixes - mostly vfs - from Al Viro:
"Assorted fixes, with an unexpected detour into vfio refcounting logics
(fell out when digging in an analog of eventpoll race in there)."
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
task_work: add a scheduling point in task_work_run()
fs: fix fs/namei.c kernel-doc warnings
eventpoll: use-after-possible-free in epoll_create1()
vfio: grab vfio_device reference *before* exposing the sucker via fd_install()
vfio: get rid of vfio_device_put()/vfio_group_get_device* races
vfio: get rid of open-coding kref_put_mutex
introduce kref_put_mutex()
vfio: don't dereference after kfree...
mqueue: lift mnt_want_write() outside ->i_mutex, clean up a bit
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equivalent of
mutex_lock(mutex);
if (!kref_put(kref, release))
mutex_unlock(mutex);
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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Merge fixes from Andrew Morton.
Random drivers and some VM fixes.
* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (17 commits)
mm: compaction: Abort async compaction if locks are contended or taking too long
mm: have order > 0 compaction start near a pageblock with free pages
rapidio/tsi721: fix unused variable compiler warning
rapidio/tsi721: fix inbound doorbell interrupt handling
drivers/rtc/rtc-rs5c348.c: fix hour decoding in 12-hour mode
mm: correct page->pfmemalloc to fix deactivate_slab regression
drivers/rtc/rtc-pcf2123.c: initialize dynamic sysfs attributes
mm/compaction.c: fix deferring compaction mistake
drivers/misc/sgi-xp/xpc_uv.c: SGI XPC fails to load when cpu 0 is out of IRQ resources
string: do not export memweight() to userspace
hugetlb: update hugetlbpage.txt
checkpatch: add control statement test to SINGLE_STATEMENT_DO_WHILE_MACRO
mm: hugetlbfs: correctly populate shared pmd
cciss: fix incorrect scsi status reporting
Documentation: update mount option in filesystem/vfat.txt
mm: change nr_ptes BUG_ON to WARN_ON
cs5535-clockevt: typo, it's MFGPT, not MFPGT
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Pull networking update from David Miller:
"A couple weeks of bug fixing in there. The largest chunk is all the
broken crap Amerigo Wang found in the netpoll layer."
1) netpoll and it's users has several serious bugs:
a) uses GFP_KERNEL with locks held
b) interfaces requiring interrupts disabled are called with them
enabled
c) and vice versa
d) VLAN tag demuxing, as per all other RX packet input paths, is not
applied
All from Amerigo Wang.
2) Hopefully cure the ipv4 mapped ipv6 address TCP early demux bugs for
good, from Neal Cardwell.
3) Unlike AF_UNIX, AF_PACKET sockets don't set a default credentials
when the user doesn't specify one explicitly during sendmsg().
Instead we attach an empty (zero) SCM credential block which is
definitely not what we want. Fix from Eric Dumazet.
4) IPv6 illegally invokes netdevice notifiers with RCU lock held, fix
from Ben Hutchings.
5) inet_csk_route_child_sock() checks wrong inet options pointer, fix
from Christoph Paasch.
6) When AF_PACKET is used for transmit, packet loopback doesn't behave
properly when a socket fanout is enabled, from Eric Leblond.
7) On bluetooth l2cap channel create failure, we leak the socket, from
Jaganath Kanakkassery.
8) Fix all the netprio file handling bugs found by Al Viro, from John
Fastabend.
9) Several error return and NULL deref bug fixes in networking drivers
from Julia Lawall.
10) A large smattering of struct padding et al. kernel memory leaks to
userspace found of Mathias Krause.
11) Conntrack expections in netfilter can access an uninitialized timer,
fix from Pablo Neira Ayuso.
12) Several netfilter SIP tracker bug fixes from Patrick McHardy.
13) IPSEC ipv6 routes are not initialized correctly all the time,
resulting in an OOPS in inet_putpeer(). Also from Patrick McHardy.
14) Bridging does rcu_dereference() outside of RCU protected area, from
Stephen Hemminger.
15) Fix routing cache removal performance regression when looking up
output routes that have a local destination. From Zheng Yan.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (87 commits)
af_netlink: force credentials passing [CVE-2012-3520]
ipv4: fix ip header ident selection in __ip_make_skb()
ipv4: Use newinet->inet_opt in inet_csk_route_child_sock()
tcp: fix possible socket refcount problem
net: tcp: move sk_rx_dst_set call after tcp_create_openreq_child()
net/core/dev.c: fix kernel-doc warning
netconsole: remove a redundant netconsole_target_put()
net: ipv6: fix oops in inet_putpeer()
net/stmmac: fix issue of clk_get for Loongson1B.
caif: Do not dereference NULL in chnl_recv_cb()
af_packet: don't emit packet on orig fanout group
drivers/net/irda: fix error return code
drivers/net/wan/dscc4.c: fix error return code
drivers/net/wimax/i2400m/fw.c: fix error return code
smsc75xx: add missing entry to MAINTAINERS
net: qmi_wwan: new devices: UML290 and K5006-Z
net: sh_eth: Add eth support for R8A7779 device
netdev/phy: skip disabled mdio-mux nodes
dt: introduce for_each_available_child_of_node, of_get_next_available_child
net: netprio: fix cgrp create and write priomap race
...
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Jim Schutt reported a problem that pointed at compaction contending
heavily on locks. The workload is straight-forward and in his own words;
The systems in question have 24 SAS drives spread across 3 HBAs,
running 24 Ceph OSD instances, one per drive. FWIW these servers
are dual-socket Intel 5675 Xeons w/48 GB memory. I've got ~160
Ceph Linux clients doing dd simultaneously to a Ceph file system
backed by 12 of these servers.
Early in the test everything looks fine
procs -------------------memory------------------ ---swap-- -----io---- --system-- -----cpu-------
r b swpd free buff cache si so bi bo in cs us sy id wa st
31 15 0 287216 576 38606628 0 0 2 1158 2 14 1 3 95 0 0
27 15 0 225288 576 38583384 0 0 18 2222016 203357 134876 11 56 17 15 0
28 17 0 219256 576 38544736 0 0 11 2305932 203141 146296 11 49 23 17 0
6 18 0 215596 576 38552872 0 0 7 2363207 215264 166502 12 45 22 20 0
22 18 0 226984 576 38596404 0 0 3 2445741 223114 179527 12 43 23 22 0
and then it goes to pot
procs -------------------memory------------------ ---swap-- -----io---- --system-- -----cpu-------
r b swpd free buff cache si so bi bo in cs us sy id wa st
163 8 0 464308 576 36791368 0 0 11 22210 866 536 3 13 79 4 0
207 14 0 917752 576 36181928 0 0 712 1345376 134598 47367 7 90 1 2 0
123 12 0 685516 576 36296148 0 0 429 1386615 158494 60077 8 84 5 3 0
123 12 0 598572 576 36333728 0 0 1107 1233281 147542 62351 7 84 5 4 0
622 7 0 660768 576 36118264 0 0 557 1345548 151394 59353 7 85 4 3 0
223 11 0 283960 576 36463868 0 0 46 1107160 121846 33006 6 93 1 1 0
Note that system CPU usage is very high blocks being written out has
dropped by 42%. He analysed this with perf and found
perf record -g -a sleep 10
perf report --sort symbol --call-graph fractal,5
34.63% [k] _raw_spin_lock_irqsave
|
|--97.30%-- isolate_freepages
| compaction_alloc
| unmap_and_move
| migrate_pages
| compact_zone
| compact_zone_order
| try_to_compact_pages
| __alloc_pages_direct_compact
| __alloc_pages_slowpath
| __alloc_pages_nodemask
| alloc_pages_vma
| do_huge_pmd_anonymous_page
| handle_mm_fault
| do_page_fault
| page_fault
| |
| |--87.39%-- skb_copy_datagram_iovec
| | tcp_recvmsg
| | inet_recvmsg
| | sock_recvmsg
| | sys_recvfrom
| | system_call
| | __recv
| | |
| | --100.00%-- (nil)
| |
| --12.61%-- memcpy
--2.70%-- [...]
There was other data but primarily it is all showing that compaction is
contended heavily on the zone->lock and zone->lru_lock.
commit [b2eef8c0: mm: compaction: minimise the time IRQs are disabled
while isolating pages for migration] noted that it was possible for
migration to hold the lru_lock for an excessive amount of time. Very
broadly speaking this patch expands the concept.
This patch introduces compact_checklock_irqsave() to check if a lock
is contended or the process needs to be scheduled. If either condition
is true then async compaction is aborted and the caller is informed.
The page allocator will fail a THP allocation if compaction failed due
to contention. This patch also introduces compact_trylock_irqsave()
which will acquire the lock only if it is not contended and the process
does not need to schedule.
Reported-by: Jim Schutt <jaschut@sandia.gov>
Tested-by: Jim Schutt <jaschut@sandia.gov>
Signed-off-by: Mel Gorman <mgorman@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Fix the following warning:
usr/include/linux/string.h:8: userspace cannot reference function or variable defined in the kernel
Signed-off-by: WANG Cong <xiyou.wangcong@gmail.com>
Acked-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Jani Nikula <jani.nikula@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
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Pablo Neira Ayuso discovered that avahi and
potentially NetworkManager accept spoofed Netlink messages because of a
kernel bug. The kernel passes all-zero SCM_CREDENTIALS ancillary data
to the receiver if the sender did not provide such data, instead of not
including any such data at all or including the correct data from the
peer (as it is the case with AF_UNIX).
This bug was introduced in commit 16e572626961
(af_unix: dont send SCM_CREDENTIALS by default)
This patch forces passing credentials for netlink, as
before the regression.
Another fix would be to not add SCM_CREDENTIALS in
netlink messages if not provided by the sender, but it
might break some programs.
With help from Florian Weimer & Petr Matousek
This issue is designated as CVE-2012-3520
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Petr Matousek <pmatouse@redhat.com>
Cc: Florian Weimer <fweimer@redhat.com>
Cc: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This was originally for helping fabrics to determine overflow/underflow
status, and has been superceeded by SCF_OVERFLOW_BIT + SCF_UNDERFLOW_BIT.
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
- Fixed Nomadik errorpath
- Fixed documentation spelling errors
- Forward-declare struct device in a header file
- Remove some extraneous code lines when getting pinctrl states
- Correct the i.MX51 configure register number
- Fix the Nomadik keypad function group list
* tag 'pinctrl-fixes-v3.6-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl/nomadik: add kp_b_2 keyboard function group list
pinctrl: imx51: fix .conf_reg of MX51_PAD_SD2_CMD__CSPI_MOSI
trivial: pinctrl core: remove extraneous code lines
pinctrl: header: trivial: declare struct device
Documentation/pinctrl.txt: Fix some misspelled macros
pinctrl/nomadik: fix null in irqdomain errorpath
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git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"This update became slightly bigger than usual for rc3, but most of the
commits are small and trivial. A large chunk is found for HD-audio
ca0132 codec, which is mostly a clean up of the specific code, to make
SPDIF working properly, and also in the new ASoC Arizona driver.
One important fix is for usb-audio Oops fix since 3.5. We still see
some EHCI related bandwidth problem, but usb-audio should be more
stabilized now.
Other than that, a Kconfig fix is spread over files, and various
HD-audio and ASoC fixes as usual, in addition to Julia's error path
fixes."
* tag 'sound-3.6' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (42 commits)
ALSA: snd-als100: fix suspend/resume
ALSA: hda - Fix leftover codec->power_transition
ALSA: hda - don't create dysfunctional mixer controls for ca0132
ALSA: sound/ppc/snd_ps3.c: fix error return code
ALSA: sound/pci/rme9652/hdspm.c: fix error return code
ALSA: sound/pci/sis7019.c: fix error return code
ALSA: sound/pci/ctxfi/ctatc.c: fix error return code
ALSA: sound/atmel/ac97c.c: fix error return code
ALSA: sound/atmel/abdac.c: fix error return code
ALSA: fix pcm.h kernel-doc warning and notation
sound: oss/sb_audio: prevent divide by zero bug
ASoC: wm9712: Fix inverted capture volume
ASoC: wm9712: Fix microphone source selection
ASoC: wm5102: Remove DRC2
ALSA: hda - Don't send invalid volume knob command on IDT 92hd75bxx
ALSA: usb-audio: Fix scheduling-while-atomic bug in PCM capture stream
ALSA: lx6464es: Add a missing error check
ALSA: hda - Fix 'Beep Playback Switch' with no underlying mute switch
ASoC: jack: Always notify full jack status
ASoC: wm5110: Add missing input PGA routes
...
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git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core
Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo:
* Fix include order for bison/flex-generated C files, from Ben Hutchings
* Build fixes and documentation corrections from David Ahern
* Group parsing support, from Jiri Olsa
* UI/gtk refactorings and improvements from Namhyung Kim
* NULL deref fix for perf script, from Namhyung Kim
* Assorted cleanups from Robert Richter
* Let O= makes handle relative paths, from Steven Rostedt
* perf script python fixes, from Feng Tang.
* Improve 'perf lock' error message when the needed tracepoints
are not present, from David Ahern.
* Initial bash completion support, from Frederic Weisbecker
* Allow building without libelf, from Namhyung Kim.
* Support DWARF CFI based unwind to have callchains when %bp
based unwinding is not possible, from Jiri Olsa.
* Symbol resolution fixes, while fixing support PPC64 files with an .opt ELF
section was the end goal, several fixes for code that handles all
architectures and cleanups are included, from Cody Schafer.
* Add a description for the JIT interface, from Andi Kleen.
* Assorted fixes for Documentation and build in 32 bit, from Robert Richter
* Add support for non-tracepoint events in perf script python, from Feng Tang
* Cache the libtraceevent event_format associated to each evsel early, so that we
avoid relookups, i.e. calling pevent_find_event repeatedly when processing
tracepoint events.
[ This is to reduce the surface contact with libtraceevents and make clear what
is that the perf tools needs from that lib: so far parsing the common and per
event fields. ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core
Pull ftrace updates from Steve Rostedt:
" This patch series extends ftrace function tracing utility to be
more dynamic for its users. It allows for data passing to the callback
functions, as well as reading regs as if a breakpoint were to trigger
at function entry.
The main goal of this patch series was to allow kprobes to use ftrace
as an optimized probe point when a probe is placed on an ftrace nop.
With lots of help from Masami Hiramatsu, and going through lots of
iterations, we finally came up with a good solution. "
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus
ASoC: Additional updates for 3.6
A batch more bugfixes, all driver-specific and fairly small and
unremarkable in a global context. The biggest batch are for the newly
added Arizona drivers.
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Ingo Molnar.
A x32 socket ABI fix with a -stable backport tag among other fixes.
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x32: Use compat shims for {g,s}etsockopt
Revert "x86-64/efi: Use EFI to deal with platform wall clock"
x86, apic: fix broken legacy interrupts in the logical apic mode
x86, build: Globally set -fno-pic
x86, avx: don't use avx instructions with "noxsave" boot param
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull a mutex fix from Ingo Molnar.
Fix the fastpath_lock failure contention flag for xchg-based mutexes.
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
mutex: Place lock in contended state after fastpath_lock failure
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Commit 97bab73f (inet: Hide route peer accesses behind helpers.) introduced
a bug in xfrm6_policy_destroy(). The xfrm_dst's _rt6i_peer member is not
initialized, causing a false positive result from inetpeer_ptr_is_peer(),
which in turn causes a NULL pointer dereference in inet_putpeer().
Pid: 314, comm: kworker/0:1 Not tainted 3.6.0-rc1+ #17 To Be Filled By O.E.M. To Be Filled By O.E.M./P4S800D-X
EIP: 0060:[<c03abf93>] EFLAGS: 00010246 CPU: 0
EIP is at inet_putpeer+0xe/0x16
EAX: 00000000 EBX: f3481700 ECX: 00000000 EDX: 000dd641
ESI: f3481700 EDI: c05e949c EBP: f551def4 ESP: f551def4
DS: 007b ES: 007b FS: 0000 GS: 00e0 SS: 0068
CR0: 8005003b CR2: 00000070 CR3: 3243d000 CR4: 00000750
DR0: 00000000 DR1: 00000000 DR2: 00000000 DR3: 00000000
DR6: ffff0ff0 DR7: 00000400
f551df04 c0423de1 00000000 f3481700 f551df18 c038d5f7 f254b9f8 f551df28
f34f85d8 f551df20 c03ef48d f551df3c c0396870 f30697e8 f24e1738 c05e98f4
f5509540 c05cd2b4 f551df7c c0142d2b c043feb5 f5509540 00000000 c05cd2e8
[<c0423de1>] xfrm6_dst_destroy+0x42/0xdb
[<c038d5f7>] dst_destroy+0x1d/0xa4
[<c03ef48d>] xfrm_bundle_flo_delete+0x2b/0x36
[<c0396870>] flow_cache_gc_task+0x85/0x9f
[<c0142d2b>] process_one_work+0x122/0x441
[<c043feb5>] ? apic_timer_interrupt+0x31/0x38
[<c03967eb>] ? flow_cache_new_hashrnd+0x2b/0x2b
[<c0143e2d>] worker_thread+0x113/0x3cc
Fix by adding a init_dst() callback to struct xfrm_policy_afinfo to
properly initialize the dst's peer pointer.
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
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