From: Aaron Durbin <[email protected]> When the panic path is taken for khungtaskd dump all tasks with the UNINTERUPTIBLE state. That way, any inter-dependent tasks that caused one another to hang will be saved in the crash output.
Signed-off-by: Aaron Durbin <[email protected]> Tested-by: Robert Foss <[email protected]> Signed-off-by: Robert Foss <[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 d234022..946caf9 100644 --- a/kernel/hung_task.c +++ b/kernel/hung_task.c @@ -122,6 +122,8 @@ static void check_hung_task(struct task_struct *t, unsigned long timeout) touch_nmi_watchdog(); if (sysctl_hung_task_panic) { + /* Dump all tasks. */ + show_state_filter(TASK_UNINTERRUPTIBLE); trigger_all_cpu_backtrace(); panic("hung_task: blocked tasks"); } -- 2.7.4
