After spotting a stuck process, and having decided not to panic, give the task a kick to see if that helps it to recover (e.g. to paper over a missed wake up).
References: https://bugs.freedesktop.org/show_bug.cgi?id=104009 References: https://bugs.freedesktop.org/show_bug.cgi?id=104682 Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk> Suggest-Cc: Ingo Molnar <mi...@kernel.org> Suggest-Cc: Tetsuo Handa <penguin-ker...@i-love.sakura.ne.jp> Suggest-Cc: Andrew Morton <a...@linux-foundation.org> --- kernel/hung_task.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/hung_task.c b/kernel/hung_task.c index 751593ed7c0b..b32acb6bcc63 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -132,6 +132,8 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) trigger_all_cpu_backtrace(); panic("hung_task: blocked tasks"); } + + wake_up_process(t); } /* -- 2.15.1 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx
