[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.2' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 1001.337418] BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 245s! [ 1001.345977] Showing busy workqueues and worker pools: [ 1001.351319] workqueue events: flags=0x0 [ 1001.355397] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 1001.362505] in-flight: 7978:rtc_timer_do_work [ 1001.367350] pending: cache_reap [ 1001.370988] pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 1001.377915] pending: defense_work_handler [ 1001.382451] workqueue events_freezable: flags=0x4 [ 1001.387292] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 1001.394245] pending: update_balloon_stats_func [ 1001.399210] workqueue events_power_efficient: flags=0x80 [ 1001.404661] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=2/256 refcnt=3 [ 1001.411620] pending: fb_flashcursor, neigh_periodic_work [ 1001.417475] workqueue mm_percpu_wq: flags=0x8 [ 1001.421986] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 1001.428955] pending: vmstat_update [ 1001.432934] workqueue dm_bufio_cache: flags=0x8 [ 1001.437601] pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 [ 1001.444539] pending: work_fn [ 1001.447961] pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=245s workers=3 idle: 3461 18