Commits
Peter Zijlstra committed 26cabd31259
sched, net: Clean up sk_wait_event() vs. might_sleep() WARNING: CPU: 1 PID: 1744 at kernel/sched/core.c:7104 __might_sleep+0x58/0x90() do not call blocking ops when !TASK_RUNNING; state=1 set at [<ffffffff81070e10>] prepare_to_wait+0x50 /0xa0 [<ffffffff8105bc38>] __might_sleep+0x58/0x90 [<ffffffff8148c671>] lock_sock_nested+0x31/0xb0 [<ffffffff81498aaa>] sk_stream_wait_memory+0x18a/0x2d0 Which is a false positive because sk_wait_event() will already have TASK_RUNNING at that point if it would've gone through schedule_timeout(). So annotate with sched_annotate_sleep(); which goes away on !DEBUG builds. Reported-by: Ilya Dryomov <ilya.dryomov@inktank.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: http://lkml.kernel.org/r/20140924082242.524407432@infradead.org Cc: David S. Miller <davem@davemloft.net> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: netdev@vger.kernel.org Cc: tglx@linutronix.de Cc: ilya.dryomov@inktank.com Cc: umgwanakikbuti@gmail.com Cc: oleg@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>