summaryrefslogtreecommitdiff
AgeCommit message (Collapse)Author
2011-05-09HPFS: Fix some unaligned accessesMikulas Patocka
Fix some unaligned accesses Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Fix endianity. Make hpfs work on big-endian machinesMikulas Patocka
Fix endianity. Make hpfs work on big-endian machines. Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Implement fsync for hpfsMikulas Patocka
Implement fsync for hpfs. Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Fix a bug that filesystem was not marked dirty when remounting itMikulas Patocka
Fix a bug that filesystem was not marked dirty when remounting it Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Restrict uid and gid to 16-bit valuesMikulas Patocka
Restrict uid and gid to 16-bit values. HPFS stores only 2 bytes in the EAs. Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: When marking or clearing the dirty bit, sync the filesystemMikulas Patocka
When marking or clearing the dirty bit, sync the filesystem Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Use types with defined widthMikulas Patocka
Use types with defined width Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Remove mark_inode_dirtyMikulas Patocka
Remove mark_inode_dirty HPFS doesn't use kernel's dirty inode indicator anyway because writing an inode requires directory's mutex. Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Remove CR/LF conversion optionMikulas Patocka
Remove CR/LF conversion option It is unused anyway. It was used on 2.2 kernels or so. Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Remove remaining locksMikulas Patocka
Remove remaining locks Because of a new global per-fs lock, no other locks are needed Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Introduce a global mutex and lock it on every callback from VFS.Mikulas Patocka
Introduce a global mutex and lock it on every callback from VFS. Performance doesn't matter, reviewing the whole code for locking correctness would be too complicated, so simply lock it all. Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09HPFS: Make HPFS compile on preempt and SMPMikulas Patocka
Make HPFS compile on preempt and SMP Signed-off-by: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-09eeepc-laptop: Use ACPI handle to identify rfkill portMatthew Garrett
The ACPI notification we get from rfkill events on these machines gives us all the information we need to identify the port that's changed. Do so rather than assuming that it's always bus 1. Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-05-09[PATCH] sony-laptop: limit brightness range to DSDT provided onesMattia Dongili
The new style brightness control provides an operating range of 9 values (seems consistent over a large number of models sharing the same brightness control methods). Read and use the minimum and maximum values to limit the backlight interface between those boundaries. Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-05-09sony-laptop: report failures on setting LCD brightnessMattia Dongili
Check if we were successful in setting the requested brightness and report failure in that case. Signed-off-by: Mattia Dongili <malattia@linux.it> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-05-09thinkpad-acpi: module autoloading for newer Lenovo ThinkPads.Manoj Iyer
The newer Lenovo ThinkPads have HKEY HID of LEN0068 instead of IBM0068. Added new HID so that thinkpad_acpi module will auto load on these newer Lenovo ThinkPads. Acked-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br> Cc: stable@kernel.org Signed-off-by: Manoj Iyer <manoj.iyer@canonical.com> Signed-off-by: Andy Lutomirski <luto@mit.edu> Signed-off-by: Matthew Garrett <mjg@redhat.com>
2011-05-09drm/radeon/kms: add pci id to acer travelmate quirk for 5730Alex Deucher
Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=34082 Reported by: Sampo Laaksonen <zhamahn@gmail.com> Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Cc: stable@kernel.org Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-05-09drm/radeon: fix order of doing things in radeon_crtc_cursor_setIlija Hadzic
if object pin or object lookup in radeon_cursor_set fail, the function could leave inconsistent mouse width and hight values in radeon_crtc fixed by moving cursor width and height assignments after all checks have passed Signed-off-by: Ilija Hadzic <ihadzic@research.bell-labs.com> Reviewed-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-05-09drm: mm: fix debug outputDaniel Vetter
The looping helper didn't do anything due to a superficial semicolon. Furthermore one of the two dump functions suffered from copy&paste fail. While staring at the code I've also noticed that the replace helper (currently unused) is a bit broken. Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-05-09Merge remote branch 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next ↵Dave Airlie
into drm-fixes * 'nouveau/drm-nouveau-fixes' of /ssd/git/drm-nouveau-next: drm/nouveau: Fix a crash at card takedown for NV40 and older cards
2011-05-09drm/radeon/kms: ATPX switcheroo fixesAlex Deucher
When we switch the display mux, also switch the i2c mux. Also use the start and finish methods to let the sbios know that the switch is happening. Should fix: https://bugs.freedesktop.org/show_bug.cgi?id=35398 Signed-off-by: Alex Deucher <alexdeucher@gmail.com> Signed-off-by: Dave Airlie <airlied@redhat.com>
2011-05-08tcp_cubic: limit delayed_ack ratio to prevent divide errorstephen hemminger
TCP Cubic keeps a metric that estimates the amount of delayed acknowledgements to use in adjusting the window. If an abnormally large number of packets are acknowledged at once, then the update could wrap and reach zero. This kind of ACK could only happen when there was a large window and huge number of ACK's were lost. This patch limits the value of delayed ack ratio. The choice of 32 is just a conservative value since normally it should be range of 1 to 4 packets. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-08ipheth: Properly distinguish length and alignment in URBs and skbsBen Hutchings
The USB protocol this driver implements appears to require 2 bytes of padding in front of each received packet. This used to be equal to the value of NET_IP_ALIGN on x86, so the driver abused that constant and mostly worked, but this is no longer the case. The driver also mixed up the URB and packet lengths, resulting in 2 bytes of junk at the end of the skb. Introduce a private constant for the 2 bytes of padding; fix this confusion and check for the under-length case. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-09drm/nouveau: Fix a crash at card takedown for NV40 and older cardsJimmy Rentz
NV40 and older cards (pre NV50) reserve a vram bo for the vga memory at card init. This bo is then freed at card shutdown. The problem is that the ttm bo vram manager was already freed. So a crash occurs when the vga bo is freed. The fix is to free the vga bo prior to freeing the ttm bo vram manager. There might be other solutions but this seemed the simplest to me. Signed-off-by: Jimmy Rentz <jb17bsome@gmail.com> Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2011-05-08ASoC: UDA134x: Remove POWER_OFF_ON_STANDBY define.Marek Belisko
Define POWER_OFF_ON_STANDBY cause trobles when trying to get some sound from codec because code for bias setup was not compiled (define wasn't defined). This define was removed in commit: cc3202f5 but again introduced by commit: f0fba2ad1 which then completely break codec functionality so remove it again. Signed-off-by: Marek Belisko <marek.belisko@open-nandra.com> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@kernel.org
2011-05-08ASoC: SSM2602: Fix reg_cache_sizeLars-Peter Clausen
reg_cache_size is supposed to be the number of elements in the register cache, not the size in bytes. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-05-08ASoC: SSM2602: Fix 'Mic Boost2' controlLars-Peter Clausen
The 'Mic Boost2' control's shift was off by one and thus was not working. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Cc: stable@kernel.org
2011-05-08ASoC: SSM2602: Properly annotate i2c probe and remove functionsLars-Peter Clausen
Annotate the i2c probe and remove functions with __devinit and __devexit. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Acked-by: Liam Girdwood <lrg@ti.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-05-07Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tools: Makefile: Use gcc to determine ARCH perf events, x86: Fix Intel Nehalem and Westmere last level cache event definitions hw_breakpoints, powerpc: Fix CONFIG_HAVE_HW_BREAKPOINT off-case in ptrace_set_debugreg() sh, hw_breakpoints: Fix racy access to ptrace breakpoints arm, hw_breakpoints: Fix racy access to ptrace breakpoints powerpc, hw_breakpoints: Fix racy access to ptrace breakpoints x86, hw_breakpoints: Fix racy access to ptrace breakpoints ptrace: Prepare to fix racy accesses on task breakpoints
2011-05-07perf tools: Makefile: Use gcc to determine ARCHLin Ming
The original Makefile uses "uname -m" to determine ARCH. This causes problem on x86 when compile perf tool on 32 bit userspace with a 64 bit kernel. bench/../../../arch/x86/lib/memcpy_64.S: Assembler messages: bench/../../../arch/x86/lib/memcpy_64.S:28: Error: bad register name `%rdi' This is because "uname -m" returns x86_64 and memcpy_64.S is included in 32 bit build. Reported-by: Riccardo Magliocchetti <riccardo.magliocchetti@gmail.com> Signed-off-by: Lin Ming <ming.m.lin@intel.com> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Arnaldo Carvalho de Melo <acme@infradead.org> Link: http://lkml.kernel.org/r/1304743274.3132.17.camel@localhost Signed-off-by: Ingo Molnar <mingo@elte.hu>
2011-05-07Merge first four commits of 'zImage_fixes' of ↵Russell King
git://git.linaro.org/people/nico/linux into fixes
2011-05-07ARM: zImage: the page table memory must be considered before relocationNicolas Pitre
For correctness, the initial page table located right before the decompressed kernel should be considered when determining if relocation is required. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com>
2011-05-07ARM: zImage: make sure not to relocate on top of the relocation codeNicolas Pitre
If the zImage load address is slightly below the relocation address, there is a risk for the copied data to overwrite the copy loop or cache flush code that the relocation process requires. Always bump the relocation address by the size of that code to avoid this issue. Noticed by Tony Lindgren <tony@atomide.com>. While at it, let's start the copy from the restart symbol which makes the above code size computation possible by the assembler directly (same sections), given that we don't need to preserve the code before that point anyway. And therefore we don't need to carry the _start pointer in r5 anymore. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Tested-by: Tony Lindgren <tony@atomide.com>
2011-05-06ARM: zImage: Fix bad SP address after relocating kernelTony Lindgren
Otherwise cache_clean_flush can overwrite some of the relocated area depending on where the kernel image gets loaded. This fixes booting on n900 after commit 6d7d0ae51574943bf571d269da3243257a2d15db (ARM: 6750/1: improvements to compressed/head.S). Thanks to Aaro Koskinen <aaro.koskinen@nokia.com> for debugging the address of the relocated area that gets corrupted, and to Nicolas Pitre <nicolas.pitre@linaro.org> for the other uncompress related fixes. Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
2011-05-06ARM: zImage: make sure the stack is 64-bit alignedNicolas Pitre
With ARMv5+ and EABI, the compiler expects a 64-bit aligned stack so instructions like STRD and LDRD can be used. Without this, mysterious boot failures were seen semi randomly with the LZMA decompressor. While at it, let's align .bss as well. Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org> Tested-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Tony Lindgren <tony@atomide.com> CC: stable@kernel.org
2011-05-06rtc: mc13xxx: Don't call rtc_device_register while holding lockUwe Kleine-König
Since commit f44f7f9 (RTC: Initialize kernel state from RTC) rtc_device_register reads the programmed alarm. As reading the alarm needs to take the mc13xxx lock, release it before calling rtc_device_register. This fixes a deadlock during boot: INFO: task swapper:1 blocked for more than 120 seconds. "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. swapper D c02b175c 0 1 0 0x00000000 [<c02b175c>] (schedule+0x304/0x4f4) from [<c02b25a8>] (__mutex_lock_slowpath+0x7c/0x110) [<c02b25a8>] (__mutex_lock_slowpath+0x7c/0x110) from [<c020b4cc>] (mc13xxx_rtc_read_time+0x1c/0x118) [<c020b4cc>] (mc13xxx_rtc_read_time+0x1c/0x118) from [<c0208f04>] (__rtc_read_time+0x58/0x5c) [<c0208f04>] (__rtc_read_time+0x58/0x5c) from [<c0209508>] (rtc_read_time+0x30/0x48) [<c0209508>] (rtc_read_time+0x30/0x48) from [<c0209dd4>] (__rtc_read_alarm+0x1c/0x290) [<c0209dd4>] (__rtc_read_alarm+0x1c/0x290) from [<c0208d58>] (rtc_device_register+0x150/0x27c) [<c0208d58>] (rtc_device_register+0x150/0x27c) from [<c02b0b74>] (mc13xxx_rtc_probe+0x128/0x17c) [<c02b0b74>] (mc13xxx_rtc_probe+0x128/0x17c) from [<c01d5280>] (platform_drv_probe+0x1c/0x24) [<c01d5280>] (platform_drv_probe+0x1c/0x24) from [<c01d3e58>] (driver_probe_device+0x80/0x1a8) [<c01d3e58>] (driver_probe_device+0x80/0x1a8) from [<c01d400c>] (__driver_attach+0x8c/0x90) [<c01d400c>] (__driver_attach+0x8c/0x90) from [<c01d3654>] (bus_for_each_dev+0x60/0x8c) [<c01d3654>] (bus_for_each_dev+0x60/0x8c) from [<c01d2f6c>] (bus_add_driver+0x180/0x248) [<c01d2f6c>] (bus_add_driver+0x180/0x248) from [<c01d4664>] (driver_register+0x70/0x15c) [<c01d4664>] (driver_register+0x70/0x15c) from [<c01d5700>] (platform_driver_probe+0x18/0x98) [<c01d5700>] (platform_driver_probe+0x18/0x98) from [<c00273a8>] (do_one_initcall+0x2c/0x168) [<c00273a8>] (do_one_initcall+0x2c/0x168) from [<c00083ac>] (kernel_init+0xa0/0x150) [<c00083ac>] (kernel_init+0xa0/0x150) from [<c0033ff8>] (kernel_thread_exit+0x0/0x8) Reported-by: Vagrant Cascadian <vagrant@debian.org> Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Closes: http://bugs.debian.org/625804 [Tweaked commit log -jstultz] Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: rp5c01: Initialize drvdata before registering deviceJohn Stultz
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the device or platform drvdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the drvdata is initialized prior to registering the rtc device. CC: Wolfram Sang <w.sang@pengutronix.de> CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: pcap: Initialize drvdata before registering deviceJohn Stultz
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the device or platform drvdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the drvdata is initialized prior to registering the rtc device. CC: Wolfram Sang <w.sang@pengutronix.de> CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: msm6242: Initialize drvdata before registering deviceJohn Stultz
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the device or platform drvdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the drvdata is initialized prior to registering the rtc device. CC: Wolfram Sang <w.sang@pengutronix.de> CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: max8998: Initialize drvdata before registering deviceJohn Stultz
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the device or platform drvdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the drvdata is initialized prior to registering the rtc device. CC: Wolfram Sang <w.sang@pengutronix.de> CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: max8925: Initialize drvdata before registering deviceJohn Stultz
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the device or platform drvdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the drvdata is initialized prior to registering the rtc device. CC: Wolfram Sang <w.sang@pengutronix.de> CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: m41t80: Initialize clientdata before registering deviceJohn Stultz
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the clientdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the clientdata is initialized prior to registering the rtc device. CC: Wolfram Sang <w.sang@pengutronix.de> CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: ds1286: Initialize drvdata before registering deviceJohn Stultz
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the device or platform drvdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the drvdata is initialized prior to registering the rtc device. CC: Wolfram Sang <w.sang@pengutronix.de> CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: ep93xx: Initialize drvdata before registering deviceWolfram Sang
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the device or platform drvdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the drvdata is initialized prior to registering the rtc device. CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> [Fixed up commit log -jstultz] Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: davinci: Initialize drvdata before registering deviceWolfram Sang
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the device or platform drvdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the drvdata is initialized prior to registering the rtc device. CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> [fixed up commit log -jstultz] Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06rtc: mxc: Initialize drvdata before registering deviceWolfram Sang
Commit f44f7f96a20 ("RTC: Initialize kernel state from RTC") uncovered an issue in a number of RTC drivers, where the drivers call rtc_device_register before initializing the device or platform drvdata. This frequently results in null pointer dereferences when the rtc_device_register immediately makes use of the rtc device, calling rtc_read_alarm. The solution is to ensure the drvdata is initialized prior to registering the rtc device. CC: Alessandro Zummo <a.zummo@towertech.it> CC: Thomas Gleixner <tglx@linutronix.de> CC: rtc-linux@googlegroups.com Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> [fixed up commit log -jstultz] Signed-off-by: John Stultz <john.stultz@linaro.org>
2011-05-06Merge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6Linus Torvalds
* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6: cifs: handle errors from coalesce_t2 cifs: refactor mid finding loop in cifs_demultiplex_thread cifs: sanitize length checking in coalesce_t2 (try #3) cifs: check for bytes_remaining going to zero in CIFS_SessSetup cifs: change bleft in decode_unicode_ssetup back to signed type
2011-05-06Regression: partial revert "tracing: Remove lock_depth from event entry"Arjan van de Ven
This partially reverts commit e6e1e2593592a8f6f6380496655d8c6f67431266. That commit changed the structure layout of the trace structure, which in turn broke PowerTOP (1.9x generation) quite badly. I appreciate not wanting to expose the variable in question, and PowerTOP was not using it, so I've replaced the variable with just a padding field - that way if in the future a new field is needed it can just use this padding field. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-05-06vmxnet3: Consistently disable irqs when taking adapter->cmd_lockRoland Dreier
Using the vmxnet3 driver produces a lockdep warning because vmxnet3_set_mc(), which is called with mc->mca_lock held, takes adapter->cmd_lock. However, there are a couple of places where adapter->cmd_lock is taken with softirqs enabled, lockdep warns that a softirq that tries to take mc->mca_lock could happen while adapter->cmd_lock is held, leading to an AB-BA deadlock. I'm not sure if this is a real potential deadlock or not, but the simplest and best fix seems to be simply to make sure we take cmd_lock with spin_lock_irqsave() everywhere -- the places with plain spin_lock just look like oversights. The full enormous lockdep warning is: ========================================================= [ INFO: possible irq lock inversion dependency detected ] 2.6.39-rc6+ #1 --------------------------------------------------------- ifconfig/567 just changed the state of lock: (&(&mc->mca_lock)->rlock){+.-...}, at: [<ffffffff81531e9f>] mld_ifc_timer_expire+0xff/0x280 but this lock took another, SOFTIRQ-unsafe lock in the past: (&(&adapter->cmd_lock)->rlock){+.+...} and interrupts could create inverse lock ordering between them. other info that might help us debug this: 4 locks held by ifconfig/567: #0: (rtnl_mutex){+.+.+.}, at: [<ffffffff8147d547>] rtnl_lock+0x17/0x20 #1: ((inetaddr_chain).rwsem){.+.+.+}, at: [<ffffffff810896cf>] __blocking_notifier_call_chain+0x5f/0xb0 #2: (&idev->mc_ifc_timer){+.-...}, at: [<ffffffff8106f21b>] run_timer_softirq+0xeb/0x3f0 #3: (&ndev->lock){++.-..}, at: [<ffffffff81531dd2>] mld_ifc_timer_expire+0x32/0x280 the shortest dependencies between 2nd lock and 1st lock: -> (&(&adapter->cmd_lock)->rlock){+.+...} ops: 11 { HARDIRQ-ON-W at: [<ffffffff8109ad86>] __lock_acquire+0x7f6/0x1e10 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff81571156>] _raw_spin_lock+0x36/0x70 [<ffffffffa000d212>] vmxnet3_alloc_intr_resources+0x22/0x230 [vmxnet3] [<ffffffffa0014031>] vmxnet3_probe_device+0x5f6/0x15c5 [vmxnet3] [<ffffffff812df67f>] local_pci_probe+0x5f/0xd0 [<ffffffff812dfde9>] pci_device_probe+0x119/0x120 [<ffffffff81373df6>] driver_probe_device+0x96/0x1c0 [<ffffffff81373fcb>] __driver_attach+0xab/0xb0 [<ffffffff81372a1e>] bus_for_each_dev+0x5e/0x90 [<ffffffff81373a2e>] driver_attach+0x1e/0x20 [<ffffffff813735b8>] bus_add_driver+0xc8/0x290 [<ffffffff813745b6>] driver_register+0x76/0x140 [<ffffffff812e0046>] __pci_register_driver+0x66/0xe0 [<ffffffffa001b03a>] serio_raw_poll+0x3a/0x60 [serio_raw] [<ffffffff81002165>] do_one_initcall+0x45/0x190 [<ffffffff810aa76b>] sys_init_module+0xfb/0x250 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b SOFTIRQ-ON-W at: [<ffffffff8109adb7>] __lock_acquire+0x827/0x1e10 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff81571156>] _raw_spin_lock+0x36/0x70 [<ffffffffa000d212>] vmxnet3_alloc_intr_resources+0x22/0x230 [vmxnet3] [<ffffffffa0014031>] vmxnet3_probe_device+0x5f6/0x15c5 [vmxnet3] [<ffffffff812df67f>] local_pci_probe+0x5f/0xd0 [<ffffffff812dfde9>] pci_device_probe+0x119/0x120 [<ffffffff81373df6>] driver_probe_device+0x96/0x1c0 [<ffffffff81373fcb>] __driver_attach+0xab/0xb0 [<ffffffff81372a1e>] bus_for_each_dev+0x5e/0x90 [<ffffffff81373a2e>] driver_attach+0x1e/0x20 [<ffffffff813735b8>] bus_add_driver+0xc8/0x290 [<ffffffff813745b6>] driver_register+0x76/0x140 [<ffffffff812e0046>] __pci_register_driver+0x66/0xe0 [<ffffffffa001b03a>] serio_raw_poll+0x3a/0x60 [serio_raw] [<ffffffff81002165>] do_one_initcall+0x45/0x190 [<ffffffff810aa76b>] sys_init_module+0xfb/0x250 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b INITIAL USE at: [<ffffffff8109a9e9>] __lock_acquire+0x459/0x1e10 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff81571156>] _raw_spin_lock+0x36/0x70 [<ffffffffa000d212>] vmxnet3_alloc_intr_resources+0x22/0x230 [vmxnet3] [<ffffffffa0014031>] vmxnet3_probe_device+0x5f6/0x15c5 [vmxnet3] [<ffffffff812df67f>] local_pci_probe+0x5f/0xd0 [<ffffffff812dfde9>] pci_device_probe+0x119/0x120 [<ffffffff81373df6>] driver_probe_device+0x96/0x1c0 [<ffffffff81373fcb>] __driver_attach+0xab/0xb0 [<ffffffff81372a1e>] bus_for_each_dev+0x5e/0x90 [<ffffffff81373a2e>] driver_attach+0x1e/0x20 [<ffffffff813735b8>] bus_add_driver+0xc8/0x290 [<ffffffff813745b6>] driver_register+0x76/0x140 [<ffffffff812e0046>] __pci_register_driver+0x66/0xe0 [<ffffffffa001b03a>] serio_raw_poll+0x3a/0x60 [serio_raw] [<ffffffff81002165>] do_one_initcall+0x45/0x190 [<ffffffff810aa76b>] sys_init_module+0xfb/0x250 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b } ... key at: [<ffffffffa0017590>] __key.42516+0x0/0xffffffffffffda70 [vmxnet3] ... acquired at: [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff81571bb5>] _raw_spin_lock_irqsave+0x55/0xa0 [<ffffffffa000de27>] vmxnet3_set_mc+0x97/0x1a0 [vmxnet3] [<ffffffff8146ffa0>] __dev_set_rx_mode+0x40/0xb0 [<ffffffff81470040>] dev_set_rx_mode+0x30/0x50 [<ffffffff81470127>] __dev_open+0xc7/0x100 [<ffffffff814703c1>] __dev_change_flags+0xa1/0x180 [<ffffffff81470568>] dev_change_flags+0x28/0x70 [<ffffffff814da960>] devinet_ioctl+0x730/0x800 [<ffffffff814db508>] inet_ioctl+0x88/0xa0 [<ffffffff814541f0>] sock_do_ioctl+0x30/0x70 [<ffffffff814542a9>] sock_ioctl+0x79/0x2f0 [<ffffffff81188798>] do_vfs_ioctl+0x98/0x570 [<ffffffff81188d01>] sys_ioctl+0x91/0xa0 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b -> (_xmit_ETHER){+.....} ops: 6 { HARDIRQ-ON-W at: [<ffffffff8109ad86>] __lock_acquire+0x7f6/0x1e10 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff8157124b>] _raw_spin_lock_bh+0x3b/0x70 [<ffffffff81475618>] __dev_mc_add+0x38/0x90 [<ffffffff814756a0>] dev_mc_add+0x10/0x20 [<ffffffff81532c9e>] igmp6_group_added+0x10e/0x1b0 [<ffffffff81533f2d>] ipv6_dev_mc_inc+0x2cd/0x430 [<ffffffff81515e17>] ipv6_add_dev+0x357/0x450 [<ffffffff81519f27>] addrconf_notify+0x2f7/0xb10 [<ffffffff81575c1c>] notifier_call_chain+0x8c/0xc0 [<ffffffff81089586>] raw_notifier_call_chain+0x16/0x20 [<ffffffff814689b7>] call_netdevice_notifiers+0x37/0x70 [<ffffffff8146a944>] register_netdevice+0x244/0x2d0 [<ffffffff8146aa0f>] register_netdev+0x3f/0x60 [<ffffffffa001419b>] vmxnet3_probe_device+0x760/0x15c5 [vmxnet3] [<ffffffff812df67f>] local_pci_probe+0x5f/0xd0 [<ffffffff812dfde9>] pci_device_probe+0x119/0x120 [<ffffffff81373df6>] driver_probe_device+0x96/0x1c0 [<ffffffff81373fcb>] __driver_attach+0xab/0xb0 [<ffffffff81372a1e>] bus_for_each_dev+0x5e/0x90 [<ffffffff81373a2e>] driver_attach+0x1e/0x20 [<ffffffff813735b8>] bus_add_driver+0xc8/0x290 [<ffffffff813745b6>] driver_register+0x76/0x140 [<ffffffff812e0046>] __pci_register_driver+0x66/0xe0 [<ffffffffa001b03a>] serio_raw_poll+0x3a/0x60 [serio_raw] [<ffffffff81002165>] do_one_initcall+0x45/0x190 [<ffffffff810aa76b>] sys_init_module+0xfb/0x250 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b INITIAL USE at: [<ffffffff8109a9e9>] __lock_acquire+0x459/0x1e10 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff8157124b>] _raw_spin_lock_bh+0x3b/0x70 [<ffffffff81475618>] __dev_mc_add+0x38/0x90 [<ffffffff814756a0>] dev_mc_add+0x10/0x20 [<ffffffff81532c9e>] igmp6_group_added+0x10e/0x1b0 [<ffffffff81533f2d>] ipv6_dev_mc_inc+0x2cd/0x430 [<ffffffff81515e17>] ipv6_add_dev+0x357/0x450 [<ffffffff81519f27>] addrconf_notify+0x2f7/0xb10 [<ffffffff81575c1c>] notifier_call_chain+0x8c/0xc0 [<ffffffff81089586>] raw_notifier_call_chain+0x16/0x20 [<ffffffff814689b7>] call_netdevice_notifiers+0x37/0x70 [<ffffffff8146a944>] register_netdevice+0x244/0x2d0 [<ffffffff8146aa0f>] register_netdev+0x3f/0x60 [<ffffffffa001419b>] vmxnet3_probe_device+0x760/0x15c5 [vmxnet3] [<ffffffff812df67f>] local_pci_probe+0x5f/0xd0 [<ffffffff812dfde9>] pci_device_probe+0x119/0x120 [<ffffffff81373df6>] driver_probe_device+0x96/0x1c0 [<ffffffff81373fcb>] __driver_attach+0xab/0xb0 [<ffffffff81372a1e>] bus_for_each_dev+0x5e/0x90 [<ffffffff81373a2e>] driver_attach+0x1e/0x20 [<ffffffff813735b8>] bus_add_driver+0xc8/0x290 [<ffffffff813745b6>] driver_register+0x76/0x140 [<ffffffff812e0046>] __pci_register_driver+0x66/0xe0 [<ffffffffa001b03a>] serio_raw_poll+0x3a/0x60 [serio_raw] [<ffffffff81002165>] do_one_initcall+0x45/0x190 [<ffffffff810aa76b>] sys_init_module+0xfb/0x250 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b } ... key at: [<ffffffff827fd868>] netdev_addr_lock_key+0x8/0x1e0 ... acquired at: [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff8157124b>] _raw_spin_lock_bh+0x3b/0x70 [<ffffffff81475618>] __dev_mc_add+0x38/0x90 [<ffffffff814756a0>] dev_mc_add+0x10/0x20 [<ffffffff81532c9e>] igmp6_group_added+0x10e/0x1b0 [<ffffffff81533f2d>] ipv6_dev_mc_inc+0x2cd/0x430 [<ffffffff81515e17>] ipv6_add_dev+0x357/0x450 [<ffffffff81519f27>] addrconf_notify+0x2f7/0xb10 [<ffffffff81575c1c>] notifier_call_chain+0x8c/0xc0 [<ffffffff81089586>] raw_notifier_call_chain+0x16/0x20 [<ffffffff814689b7>] call_netdevice_notifiers+0x37/0x70 [<ffffffff8146a944>] register_netdevice+0x244/0x2d0 [<ffffffff8146aa0f>] register_netdev+0x3f/0x60 [<ffffffffa001419b>] vmxnet3_probe_device+0x760/0x15c5 [vmxnet3] [<ffffffff812df67f>] local_pci_probe+0x5f/0xd0 [<ffffffff812dfde9>] pci_device_probe+0x119/0x120 [<ffffffff81373df6>] driver_probe_device+0x96/0x1c0 [<ffffffff81373fcb>] __driver_attach+0xab/0xb0 [<ffffffff81372a1e>] bus_for_each_dev+0x5e/0x90 [<ffffffff81373a2e>] driver_attach+0x1e/0x20 [<ffffffff813735b8>] bus_add_driver+0xc8/0x290 [<ffffffff813745b6>] driver_register+0x76/0x140 [<ffffffff812e0046>] __pci_register_driver+0x66/0xe0 [<ffffffffa001b03a>] serio_raw_poll+0x3a/0x60 [serio_raw] [<ffffffff81002165>] do_one_initcall+0x45/0x190 [<ffffffff810aa76b>] sys_init_module+0xfb/0x250 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b -> (&(&mc->mca_lock)->rlock){+.-...} ops: 6 { HARDIRQ-ON-W at: [<ffffffff8109ad86>] __lock_acquire+0x7f6/0x1e10 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff8157124b>] _raw_spin_lock_bh+0x3b/0x70 [<ffffffff81532bd5>] igmp6_group_added+0x45/0x1b0 [<ffffffff81533f2d>] ipv6_dev_mc_inc+0x2cd/0x430 [<ffffffff81515e17>] ipv6_add_dev+0x357/0x450 [<ffffffff81ce0d16>] addrconf_init+0x4e/0x183 [<ffffffff81ce0ba1>] inet6_init+0x191/0x2a6 [<ffffffff81002165>] do_one_initcall+0x45/0x190 [<ffffffff81ca4d3f>] kernel_init+0xe3/0x168 [<ffffffff8157b2e4>] kernel_thread_helper+0x4/0x10 IN-SOFTIRQ-W at: [<ffffffff8109ad5e>] __lock_acquire+0x7ce/0x1e10 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff8157124b>] _raw_spin_lock_bh+0x3b/0x70 [<ffffffff81531e9f>] mld_ifc_timer_expire+0xff/0x280 [<ffffffff8106f2a9>] run_timer_softirq+0x179/0x3f0 [<ffffffff810666d0>] __do_softirq+0xc0/0x210 [<ffffffff8157b3dc>] call_softirq+0x1c/0x30 [<ffffffff8100d42d>] do_softirq+0xad/0xe0 [<ffffffff81066afe>] irq_exit+0x9e/0xb0 [<ffffffff8157bd40>] smp_apic_timer_interrupt+0x70/0x9b [<ffffffff8157ab93>] apic_timer_interrupt+0x13/0x20 [<ffffffff8149d857>] rt_do_flush+0x87/0x2a0 [<ffffffff814a16b6>] rt_cache_flush+0x46/0x60 [<ffffffff814e36e0>] fib_disable_ip+0x40/0x60 [<ffffffff814e5447>] fib_inetaddr_event+0xd7/0xe0 [<ffffffff81575c1c>] notifier_call_chain+0x8c/0xc0 [<ffffffff810896e8>] __blocking_notifier_call_chain+0x78/0xb0 [<ffffffff81089736>] blocking_notifier_call_chain+0x16/0x20 [<ffffffff814d8021>] __inet_del_ifa+0xf1/0x2e0 [<ffffffff814d8223>] inet_del_ifa+0x13/0x20 [<ffffffff814da731>] devinet_ioctl+0x501/0x800 [<ffffffff814db508>] inet_ioctl+0x88/0xa0 [<ffffffff814541f0>] sock_do_ioctl+0x30/0x70 [<ffffffff814542a9>] sock_ioctl+0x79/0x2f0 [<ffffffff81188798>] do_vfs_ioctl+0x98/0x570 [<ffffffff81188d01>] sys_ioctl+0x91/0xa0 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b INITIAL USE at: [<ffffffff8109a9e9>] __lock_acquire+0x459/0x1e10 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff8157124b>] _raw_spin_lock_bh+0x3b/0x70 [<ffffffff81532bd5>] igmp6_group_added+0x45/0x1b0 [<ffffffff81533f2d>] ipv6_dev_mc_inc+0x2cd/0x430 [<ffffffff81515e17>] ipv6_add_dev+0x357/0x450 [<ffffffff81ce0d16>] addrconf_init+0x4e/0x183 [<ffffffff81ce0ba1>] inet6_init+0x191/0x2a6 [<ffffffff81002165>] do_one_initcall+0x45/0x190 [<ffffffff81ca4d3f>] kernel_init+0xe3/0x168 [<ffffffff8157b2e4>] kernel_thread_helper+0x4/0x10 } ... key at: [<ffffffff82801be2>] __key.40877+0x0/0x8 ... acquired at: [<ffffffff810997bc>] check_usage_forwards+0x9c/0x110 [<ffffffff8109a32c>] mark_lock+0x19c/0x400 [<ffffffff8109ad5e>] __lock_acquire+0x7ce/0x1e10 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff8157124b>] _raw_spin_lock_bh+0x3b/0x70 [<ffffffff81531e9f>] mld_ifc_timer_expire+0xff/0x280 [<ffffffff8106f2a9>] run_timer_softirq+0x179/0x3f0 [<ffffffff810666d0>] __do_softirq+0xc0/0x210 [<ffffffff8157b3dc>] call_softirq+0x1c/0x30 [<ffffffff8100d42d>] do_softirq+0xad/0xe0 [<ffffffff81066afe>] irq_exit+0x9e/0xb0 [<ffffffff8157bd40>] smp_apic_timer_interrupt+0x70/0x9b [<ffffffff8157ab93>] apic_timer_interrupt+0x13/0x20 [<ffffffff8149d857>] rt_do_flush+0x87/0x2a0 [<ffffffff814a16b6>] rt_cache_flush+0x46/0x60 [<ffffffff814e36e0>] fib_disable_ip+0x40/0x60 [<ffffffff814e5447>] fib_inetaddr_event+0xd7/0xe0 [<ffffffff81575c1c>] notifier_call_chain+0x8c/0xc0 [<ffffffff810896e8>] __blocking_notifier_call_chain+0x78/0xb0 [<ffffffff81089736>] blocking_notifier_call_chain+0x16/0x20 [<ffffffff814d8021>] __inet_del_ifa+0xf1/0x2e0 [<ffffffff814d8223>] inet_del_ifa+0x13/0x20 [<ffffffff814da731>] devinet_ioctl+0x501/0x800 [<ffffffff814db508>] inet_ioctl+0x88/0xa0 [<ffffffff814541f0>] sock_do_ioctl+0x30/0x70 [<ffffffff814542a9>] sock_ioctl+0x79/0x2f0 [<ffffffff81188798>] do_vfs_ioctl+0x98/0x570 [<ffffffff81188d01>] sys_ioctl+0x91/0xa0 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b stack backtrace: Pid: 567, comm: ifconfig Not tainted 2.6.39-rc6+ #1 Call Trace: <IRQ> [<ffffffff810996f6>] print_irq_inversion_bug+0x146/0x170 [<ffffffff81099720>] ? print_irq_inversion_bug+0x170/0x170 [<ffffffff810997bc>] check_usage_forwards+0x9c/0x110 [<ffffffff8109a32c>] mark_lock+0x19c/0x400 [<ffffffff8109ad5e>] __lock_acquire+0x7ce/0x1e10 [<ffffffff8109a383>] ? mark_lock+0x1f3/0x400 [<ffffffff8109b497>] ? __lock_acquire+0xf07/0x1e10 [<ffffffff81012255>] ? native_sched_clock+0x15/0x70 [<ffffffff8109ca4d>] lock_acquire+0x9d/0x130 [<ffffffff81531e9f>] ? mld_ifc_timer_expire+0xff/0x280 [<ffffffff8109759d>] ? lock_release_holdtime+0x3d/0x1a0 [<ffffffff8157124b>] _raw_spin_lock_bh+0x3b/0x70 [<ffffffff81531e9f>] ? mld_ifc_timer_expire+0xff/0x280 [<ffffffff8157170b>] ? _raw_spin_unlock+0x2b/0x40 [<ffffffff81531e9f>] mld_ifc_timer_expire+0xff/0x280 [<ffffffff8106f2a9>] run_timer_softirq+0x179/0x3f0 [<ffffffff8106f21b>] ? run_timer_softirq+0xeb/0x3f0 [<ffffffff810122b9>] ? sched_clock+0x9/0x10 [<ffffffff81531da0>] ? mld_gq_timer_expire+0x30/0x30 [<ffffffff810666d0>] __do_softirq+0xc0/0x210 [<ffffffff8109455f>] ? tick_program_event+0x1f/0x30 [<ffffffff8157b3dc>] call_softirq+0x1c/0x30 [<ffffffff8100d42d>] do_softirq+0xad/0xe0 [<ffffffff81066afe>] irq_exit+0x9e/0xb0 [<ffffffff8157bd40>] smp_apic_timer_interrupt+0x70/0x9b [<ffffffff8157ab93>] apic_timer_interrupt+0x13/0x20 <EOI> [<ffffffff81571f14>] ? retint_restore_args+0x13/0x13 [<ffffffff810974a7>] ? lock_is_held+0x17/0xd0 [<ffffffff8149d857>] rt_do_flush+0x87/0x2a0 [<ffffffff814a16b6>] rt_cache_flush+0x46/0x60 [<ffffffff814e36e0>] fib_disable_ip+0x40/0x60 [<ffffffff814e5447>] fib_inetaddr_event+0xd7/0xe0 [<ffffffff81575c1c>] notifier_call_chain+0x8c/0xc0 [<ffffffff810896e8>] __blocking_notifier_call_chain+0x78/0xb0 [<ffffffff81089736>] blocking_notifier_call_chain+0x16/0x20 [<ffffffff814d8021>] __inet_del_ifa+0xf1/0x2e0 [<ffffffff814d8223>] inet_del_ifa+0x13/0x20 [<ffffffff814da731>] devinet_ioctl+0x501/0x800 [<ffffffff8108a3af>] ? local_clock+0x6f/0x80 [<ffffffff81575898>] ? do_page_fault+0x268/0x560 [<ffffffff814db508>] inet_ioctl+0x88/0xa0 [<ffffffff814541f0>] sock_do_ioctl+0x30/0x70 [<ffffffff814542a9>] sock_ioctl+0x79/0x2f0 [<ffffffff810dfe87>] ? __call_rcu+0xa7/0x190 [<ffffffff81188798>] do_vfs_ioctl+0x98/0x570 [<ffffffff8117737e>] ? fget_light+0x33e/0x430 [<ffffffff81571ef9>] ? retint_swapgs+0x13/0x1b [<ffffffff81188d01>] sys_ioctl+0x91/0xa0 [<ffffffff8157a142>] system_call_fastpath+0x16/0x1b Signed-off-by: Roland Dreier <roland@purestorage.com> Signed-off-by: Shreyas N Bhatewara <sbhatewara@vmware.com> Signed-off-by: Scott J. Goldman <scottjg@vmware.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2011-05-06dccp: handle invalid feature options lengthDan Rosenberg
A length of zero (after subtracting two for the type and len fields) for the DCCPO_{CHANGE,CONFIRM}_{L,R} options will cause an underflow due to the subtraction. The subsequent code may read past the end of the options value buffer when parsing. I'm unsure of what the consequences of this might be, but it's probably not good. Signed-off-by: Dan Rosenberg <drosenberg@vsecurity.com> Cc: stable@kernel.org Acked-by: Gerrit Renker <gerrit@erg.abdn.ac.uk> Signed-off-by: David S. Miller <davem@davemloft.net>