There's the hung_task_panic sysctl, but that's a bit an extreme measure. As a fallback taint at least the machine.
Our CI uses this to decide when a reboot is necessary, plus to figure out whether the kernel is still happy. Signed-off-by: Daniel Vetter <[email protected]> Cc: Andrew Morton <[email protected]> Cc: Tetsuo Handa <[email protected]> Cc: Dmitry Vyukov <[email protected]> Cc: "Paul E. McKenney" <[email protected]> Cc: Valdis Kletnieks <[email protected]> Cc: Daniel Vetter <[email protected]> Cc: Vitaly Kuznetsov <[email protected]> Cc: "Liu, Chuansheng" <[email protected]> --- kernel/hung_task.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/hung_task.c b/kernel/hung_task.c index f108a95882c6..7fae16f1b49c 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -203,6 +203,8 @@ static void check_hung_uninterruptible_tasks(unsigned long timeout) if (hung_task_call_panic) { trigger_all_cpu_backtrace(); panic("hung_task: blocked tasks"); + } else { + add_taint(TAINT_WARN, LOCKDEP_STILL_OK); } } -- 2.20.1 _______________________________________________ Intel-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/intel-gfx
