Kernel

[PATCH 1/4] rtmutex: avoid null derefence in WARN_ON
If the pi_blocked_on variable is NULL, the subsequent WARN_ON's will cause an OOPS. Only perform the susequent checks if pi_blocked_on is valid. Signed-off-by: Darren Hart <dvhltc(a)us.ibm.com> Cc: Thomas Gleixner <tglx(a)linutronix.de> Cc: Peter Zijlstra <peterz(a)infradead.org> Cc: Ingo Molnar <mingo(a)elte.hu> Cc: ... 9 Jul 2010 19:26

[PATCH 2/4] rtmutex: add BUG_ON if a task attempts to block on two locks
rtmutex proxy locking complicates the logic a bit and opens up the possibility for a task to wake and attempt to take another sleeping lock without knowing it has been enqueued on another lock already. Add a BUG_ON to catch this scenario early. Signed-off-by: Darren Hart <dvhltc(a)us.ibm.com> Cc: Thomas Gleixner <... 9 Jul 2010 19:26

pidns: Remove races by stopping the caching of proc_mnt
Quoting Eric W. Biederman (ebiederm(a)xmission.com): .... @@ -2742,13 +2743,13 @@ void proc_flush_task(struct task_struct *task) for (i = 0; i <= pid->level; i++) { upid = &pid->numbers[i]; - proc_flush_task_mnt(upid->ns->proc_mnt, upid->nr, - tgid->numbers[i].nr); - } + mnt = get_pr... 9 Jul 2010 19:26

[PATCH] lirc: use unlocked_ioctl
New code should not rely on the big kernel lock, so use the unlocked_ioctl file operation in lirc. Signed-off-by: Arnd Bergmann <arnd(a)arndb.de> --- The lirc code currently conflicts with my removal of the .ioctl operation, which I'd like to get into linux-next. drivers/media/IR/ir-lirc-codec.c | 7 +++----... 9 Jul 2010 18:19

tracing: Add alignment to syscall metadata declarations
On Fri, Jul 9, 2010 at 1:33 PM, Sam Ravnborg <sam(a)ravnborg.org> wrote: Something like this: (whitespace damaged) diff --git a/include/asm-generic/vmlinux.lds.h b/include/asm-generic/vmlinux.lds.h index 48c5299..64430d3 100644 --- a/include/asm-generic/vmlinux.lds.h +++ b/include/asm-generic/vmlinux... 10 Jul 2010 07:17

[PATCH] arm: Build with -fno-dwarf2-cfi-asm
Commit d0679c7 restricted this workaround to powerpc only, but it turns out that ARM needs it as well. Fixes https://bugzilla.kernel.org/show_bug.cgi?id=16310 . Reported-and-Tested-by: Robert Nelson <robertcnelson(a)gmail.com> Signed-off-by: Michal Marek <mmarek(a)suse.cz> --- arch/arm/Makefile | 5 +++++ 1 fi... 9 Jul 2010 18:19

acer-wmi: fix memory leaks in wmab_execute error path
On Friday 09 July 2010 04:51:15 Axel Lin wrote: When acpi_evaluate_object() is passed ACPI_ALLOCATE_BUFFER, the caller must kfree the returned buffer if AE_OK is returned. Call Trace: wmab_execute -> wmi_evaluate_method -> acpi_evaluate_object Thus if callers of wmab_execute() pass AC... 12 Jul 2010 22:56

tracing: Add alignment to syscall metadata declarations
On Fri, 2010-07-09 at 22:33 +0200, Sam Ravnborg wrote: On Fri, Jul 09, 2010 at 03:56:42PM -0400, Steven Rostedt wrote: This looks like a fix that just hide the real bug. If I remember the original report correct the problem is that the symbol: __start_syscalls_metadata Does not point to ... 9 Jul 2010 20:33

unable to handle kernel paging request at 40000000 __alloc_memory_core_early+0x147/0x1d6
On 07/09/2010 12:52 PM, Conny Seidel wrote: Hi, On Fri, 9 Jul 2010 15:08:52 -0400 Yinghai Lu <yinghai(a)kernel.org> wrote: On 07/09/2010 07:54 AM, Borislav Petkov wrote: Hi, this is something we're getting during testing on one of our boxes here, a dual socket Magny-Cours machine.... 9 Jul 2010 21:38

tracing: Add alignment to syscall metadata declarations
* Steven Rostedt <rostedt(a)goodmis.org> wrote: Ingo, Please pull the latest tip/perf/urgent tree, which can be found at: git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace.git tip/perf/urgent Steven Rostedt (1): tracing: Add alignment to syscall metada... 9 Jul 2010 17:12