Commits
Eric Sandeen committed a8b686b3af4
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>