INFO: task kworker/u4:4:1867 blocked for more than 140 seconds. Not tainted 4.14.115+ #64 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:4 D26496 1867 2 0x80000000 Workqueue: netns cleanup_net Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:3556 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x559/0x1430 kernel/locking/mutex.c:893 cleanup_net+0x136/0x860 net/core/net_namespace.c:450 process_one_work+0x7c6/0x1510 kernel/workqueue.c:2134 worker_thread+0x5d7/0x1080 kernel/workqueue.c:2271 kthread+0x310/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 Showing all locks held in the system: 2 locks held by kworker/u4:0/5: #0: ("events_unbound"){+.+.}, at: [<000000004df29e7a>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<00000000f3e37b72>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [<00000000032417ab>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541 4 locks held by udevd/190: #0: (sb_writers#8){.+.+}, at: [<0000000068fdc509>] file_start_write include/linux/fs.h:2726 [inline] #0: (sb_writers#8){.+.+}, at: [<0000000068fdc509>] vfs_write+0x3d8/0x4d0 fs/read_write.c:545 #1: (&of->mutex){+.+.}, at: [<000000008a917613>] kernfs_fop_write+0x1d9/0x440 fs/kernfs/file.c:307 #2: (kn->count#4){++++}, at: [<0000000040faab36>] kernfs_fop_write+0x1fc/0x440 fs/kernfs/file.c:308 #3: (uevent_sock_mutex){+.+.}, at: [<00000000b7ca97b7>] kobject_uevent_env+0x443/0xc60 lib/kobject_uevent.c:456 2 locks held by kworker/u4:2/377: #0: ("events_unbound"){+.+.}, at: [<000000004df29e7a>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<00000000f3e37b72>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by getty/1764: #0: (&tty->ldisc_sem){++++}, at: [<0000000077ef131c>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<000000009bba7c56>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156 3 locks held by kworker/u4:4/1867: #0: ("%s""netns"){+.+.}, at: [<000000004df29e7a>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: (net_cleanup_work){+.+.}, at: [<00000000f3e37b72>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 #2: (net_mutex){+.+.}, at: [<000000000119e232>] cleanup_net+0x136/0x860 net/core/net_namespace.c:450 1 lock held by syz-executor.1/23045: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23587: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23595: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23638: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23643: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23648: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23674: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23690: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23691: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23724: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23779: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23794: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23795: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23809: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23830: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23840: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23842: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23870: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23910: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23918: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23926: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23927: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23933: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23939: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23947: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23976: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23984: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/23997: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24005: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24008: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24016: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24025: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24044: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24061: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24065: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24078: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24087: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24123: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24127: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24159: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24160: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24168: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24172: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24173: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24184: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24185: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24187: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24194: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24228: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24230: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24235: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24243: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24248: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24250: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24263: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24272: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24273: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24292: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24435: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24438: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24534: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24535: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24538: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24558: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24564: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24571: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24579: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24599: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24600: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24603: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24605: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24624: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24625: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24662: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24663: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24685: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24687: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24693: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24700: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24701: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24703: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24704: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24724: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24727: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24811: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/24990: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25170: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25257: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25258: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25260: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25261: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25262: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25263: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25272: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25291: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25311: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25312: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25357: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25363: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25388: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25389: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25407: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25417: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25422: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25425: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25436: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25443: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25444: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25448: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25459: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25461: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25477: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25478: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25524: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25548: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25551: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25555: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25584: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25622: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25624: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25626: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25629: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25728: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25754: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25887: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25893: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25901: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25903: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/25918: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26002: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26032: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26034: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26053: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26058: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26093: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26192: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26210: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26289: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26414: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 1 lock held by syz-executor.1/26422: #0: (net_mutex){+.+.}, at: [<000000008c9e4035>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:410 ============================================= F2FS-fs (loop1): Magic Mismatch, valid(0xf2f52010) - read(0x0) F2FS-fs (loop1): Can't find valid F2FS filesystem in 1th superblock attempt to access beyond end of device NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.115+ #64 loop1: rw=12288, want=8200, limit=20 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x10e lib/dump_stack.c:53 nmi_cpu_backtrace.cold+0x47/0x86 lib/nmi_backtrace.c:101 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 16555 Comm: syz-executor.1 Not tainted 4.14.115+ #64 task: 00000000ad6019bd task.stack: 00000000c94d4d3a RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:100 RSP: 0018:ffff8881dba07bb8 EFLAGS: 00000046 RAX: ffffffff8569b690 RBX: ffffffff878a6880 RCX: 0000000000000020 RDX: 1ffffffff0f14d2d RSI: 00000000000001da RDI: 0000000000000380 RBP: ffff8881dba1df40 R08: ffff88821ffff01c R09: ffff88821ffff008 R10: ffff88821ffff010 R11: 000000869da4af36 R12: 00000000000001da R13: 0000000000000003 R14: 00000085d7c4ac39 R15: ffff8881dba24b28 FS: 00007fcd4371e700(0000) GS:ffff8881dba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000660458 CR3: 00000001bfda8006 CR4: 00000000001606b0 Call Trace: apic_write arch/x86/include/asm/apic.h:395 [inline] lapic_next_event+0x59/0x90 arch/x86/kernel/apic/apic.c:469 clockevents_program_event+0x1fd/0x2e0 kernel/time/clockevents.c:339 tick_program_event+0x78/0xd0 kernel/time/tick-oneshot.c:47 hrtimer_interrupt+0x20b/0x490 kernel/time/hrtimer.c:1370 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1037 [inline] smp_apic_timer_interrupt+0x136/0x620 arch/x86/kernel/apic/apic.c:1062 apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:787 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:778 [inline] RIP: 0010:free_hot_cold_page+0x70a/0xc80 mm/page_alloc.c:2657 RSP: 0018:ffff8881dba07d78 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000007 RBX: 0000000000000095 RCX: 1ffff11030cb73fa RDX: 0000000000000000 RSI: ffff8881865b9fd8 RDI: 0000000000000246 RBP: ffffea00063eb3a0 R08: 1ffff11038d80200 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffffea00071b0040 R13: ffffea00071b0060 R14: 0000000000000000 R15: ffff8881dba2ea70 __put_single_page mm/swap.c:79 [inline] __put_page+0x6a/0xa0 mm/swap.c:113 put_page include/linux/mm.h:855 [inline] free_page_and_swap_cache+0x17a/0x210 mm/swap_state.c:307 __tlb_remove_table arch/x86/include/asm/tlb.h:30 [inline] tlb_remove_table_rcu+0x78/0xc0 mm/memory.c:375 __rcu_reclaim kernel/rcu/rcu.h:195 [inline] rcu_do_batch kernel/rcu/tree.c:2699 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2962 [inline] __rcu_process_callbacks kernel/rcu/tree.c:2929 [inline] rcu_process_callbacks+0x56f/0xf40 kernel/rcu/tree.c:2946 __do_softirq+0x234/0x9ca kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x114/0x150 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] smp_apic_timer_interrupt+0x185/0x620 arch/x86/kernel/apic/apic.c:1064 apic_timer_interrupt+0x84/0x90 arch/x86/entry/entry_64.S:787 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:778 [inline] RIP: 0010:console_trylock_spinning kernel/printk/printk.c:1679 [inline] RIP: 0010:vprintk_emit+0x302/0x330 kernel/printk/printk.c:1916 RSP: 0018:ffff8881ca767040 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000007 RBX: 0000000000000216 RCX: 1ffff11030cb73fa RDX: 0000000000000000 RSI: ffff8881865b9fb0 RDI: 0000000000000216 RBP: ffff8881ca767078 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000024 R13: 0000000000000000 R14: ffff8881ca7670d0 R15: ffff8881daae4680 vprintk_func+0x58/0x152 kernel/printk/printk_safe.c:401 printk+0xba/0xed kernel/printk/printk.c:1990 handle_bad_sector+0x14b/0x186 block/blk-core.c:1939 bio_check_eod block/blk-core.c:2033 [inline] generic_make_request_checks+0x6fd/0x10d0 block/blk-core.c:2051 generic_make_request+0x7e/0x880 block/blk-core.c:2184 submit_bio+0xa7/0x390 block/blk-core.c:2302 __submit_bio fs/f2fs/data.c:333 [inline] __f2fs_submit_read_bio+0x1a8/0x1370 fs/f2fs/data.c:359 f2fs_submit_page_bio+0x551/0x9f0 fs/f2fs/data.c:509 __get_meta_page+0x21f/0xab0 fs/f2fs/checkpoint.c:86 f2fs_get_meta_page fs/f2fs/checkpoint.c:108 [inline] get_checkpoint_version+0xb6/0xa00 fs/f2fs/checkpoint.c:769 validate_checkpoint+0xaf/0x960 fs/f2fs/checkpoint.c:802 f2fs_get_valid_checkpoint+0x20b/0x14e0 fs/f2fs/checkpoint.c:855 f2fs_fill_super+0x3b9d/0x5740 fs/f2fs/super.c:3228 Code: 83 3d cc ce db 02 01 77 02 5d c3 89 ef 5d e9 71 e7 fe ff 48 c7 c7 40 85 45 88 e8 e4 5a 49 00 eb df 66 90 89 ff 89 b7 00 d0 5f ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb