diff options
| author | Eric Sandeen <sandeen@redhat.com> | 2014-12-16 16:25:28 -0600 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2015-01-14 13:34:14 +0100 |
| commit | a8b686b3af4419f92e0ea5be1c76fb68363df8e6 (patch) | |
| tree | 2c103c51144d8bbcd97e2a02e1ac95ddb224a109 /kernel/groups.c | |
| parent | 638476007d13534b2ed4134bf0279ef44071140b (diff) | |
sched/debug: Check for stack overflow in ___might_sleep()
Sometimes a "BUG: sleeping function called from invalid context"
message is not indicative of locking problems, but is the result
of a stack overflow corrupting the thread info.
Witness http://oss.sgi.com/archives/xfs/2014-02/msg00325.html
for example, which took a few go-rounds to sort out.
If we're printing the warning, things are wonky already, and
it'd be informative to check for the stack end corruption at this
point, too.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: http://lkml.kernel.org/r/5490B158.4060005@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'kernel/groups.c')
0 files changed, 0 insertions, 0 deletions