Re: [syzbot] [net?] INFO: task hung in new_device_store (5)

[Hillf Danton]

#syz test: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master

--- x/kernel/hung_task.c
+++ y/kernel/hung_task.c
@@ -510,6 +510,7 @@ static int watchdog(void *dummy)
 		interval = min_t(unsigned long, interval, timeout);
 		t = hung_timeout_jiffies(hung_last_checked, interval);
 		if (t <= 0) {
+			timeout = 100;
 			if (!atomic_xchg(&reset_hung_task, 0) &&
 			    !hung_detector_suspended)
 				check_hung_uninterruptible_tasks(timeout);
--