Peter Zijlstra 64ac72f81b sched: Fix race in task_group() ... commit 8323f26ce3 upstream. Stefan reported a crash on a kernel before a3e5d1091c ("sched: Don't call task_group() too many times in set_task_rq()"), he found the reason to be that the multiple task_group() invocations in set_task_rq() returned different values. Looking at all that I found a lack of serialization and plain wrong comments. The below tries to fix it using an extra pointer which is updated under the appropriate scheduler locks. Its not pretty, but I can't really see another way given how all the cgroup stuff works. Reported-and-tested-by: Stefan Bader <stefan.bader@canonical.com> Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1340364965.18025.71.camel@twins Signed-off-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2012-10-02 09:47:42 -07:00
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acpi	ACPI: Store SRAT table revision	2012-01-25 17:24:57 -08:00
asm-generic	mutex: Place lock in contended state after fastpath_lock failure	2012-10-02 09:47:39 -07:00
crypto
drm	drm/radeon/kms: add new BTC PCI ids	2012-06-10 00:33:04 +09:00
keys
linux	sched: Fix race in task_group()	2012-10-02 09:47:42 -07:00
math-emu
media	[media] tuner-core/v4l2-subdev: document that the type field has to be filled in	2011-07-07 15:04:23 -03:00
mtd
net	tcp: Apply device TSO segment limit earlier	2012-10-02 09:47:04 -07:00
pcmcia
rdma	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband	2011-05-26 12:13:57 -07:00
rxrpc
scsi	[SCSI] libsas: Add option for SATA soft reset	2011-05-26 22:49:33 -05:00
sound	ALSA: sb16 - Fix build errors on MIPS and others with 13bit ioctl size	2011-06-30 15:33:57 +02:00
target	target: Set additional sense length field in sense data	2012-01-25 17:25:00 -08:00
trace	tracing: Don't call page_to_pfn() if page is NULL	2012-10-02 09:47:27 -07:00
video	OMAPDSS: HDMI: PHY burnout fix	2012-03-12 10:32:59 -07:00
xen	xen/xenbus: Reject replies with payload > XENSTORE_PAYLOAD_MAX.	2012-01-25 17:24:41 -08:00
Kbuild