INFO: task syz-executor.5:20304 blocked for more than 140 seconds. Not tainted 4.14.117+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28960 20304 17646 0x80000002 Call Trace: schedule+0x92/0x1c0 kernel/sched/core.c:3498 schedule_timeout+0x736/0xe80 kernel/time/timer.c:1721 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:123 __wait_rcu_gp+0x235/0x2f0 kernel/rcu/update.c:413 synchronize_sched+0x150/0x1e0 kernel/rcu/tree.c:3241 tracepoint_synchronize_unregister include/linux/tracepoint.h:80 [inline] perf_trace_event_unreg.isra.0+0xae/0x1d0 kernel/trace/trace_event_perf.c:161 perf_trace_destroy+0xba/0x100 kernel/trace/trace_event_perf.c:236 _free_event+0x293/0xaf0 kernel/events/core.c:4243 put_event+0x20/0x30 kernel/events/core.c:4329 perf_event_release_kernel+0x383/0x870 kernel/events/core.c:4430 perf_release+0x33/0x40 kernel/events/core.c:4440 __fput+0x25e/0x700 fs/file_table.c:210 task_work_run+0x118/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x903/0x2960 kernel/exit.c:874 INFO: task syz-executor.3:20886 blocked for more than 140 seconds. Not tainted 4.14.117+ #2 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D29992 20886 18838 0x00000004 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 perf_trace_init+0x4f/0xa60 kernel/trace/trace_event_perf.c:216 perf_tp_event_init+0x79/0xf0 kernel/events/core.c:8111 perf_try_init_event+0x167/0x200 kernel/events/core.c:9347 perf_init_event kernel/events/core.c:9385 [inline] perf_event_alloc.part.0+0xcc5/0x1e70 kernel/events/core.c:9645 Showing all locks held in the system: 2 locks held by kworker/1:0/18: #0: ("events"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&ns->proc_work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [<00000000d23ae61d>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4541 2 locks held by getty/1754: #0: (&tty->ldisc_sem){++++}, at: [<000000005238c8f9>] tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:284 #1: (&ldata->atomic_read_lock){+.+.}, at: [<00000000a42bd4eb>] n_tty_read+0x1f7/0x1700 drivers/tty/n_tty.c:2156 2 locks held by kworker/u4:4/1826: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/0:5/3674: #0: ("events"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&ns->proc_work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:35/9811: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:1/28952: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/1:1/29254: #0: ("events"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: (key_gc_work){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:2/29466: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:0/10026: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:3/11021: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:5/11039: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:6/11044: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:7/11051: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:8/11056: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:9/11067: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:10/11072: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:11/11076: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:12/11082: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:13/11089: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:14/11095: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:15/11104: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:16/11113: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:17/11118: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:18/11124: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:19/11250: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:20/11269: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:21/11276: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:22/11291: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:23/11302: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:24/11308: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:25/11321: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:26/11330: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:27/11458: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:28/11469: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:29/11486: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:30/11492: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:31/11499: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:32/11515: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:33/11524: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:34/11526: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:36/11657: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:37/11662: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:38/11670: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by syz-executor.5/11997: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12028: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12049: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12099: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12105: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12155: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12185: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 2 locks held by kworker/u4:39/12212: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by syz-executor.5/12221: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12227: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12235: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12240: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12246: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12247: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 2 locks held by kworker/u4:40/12252: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by syz-executor.5/12255: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 2 locks held by kworker/u4:41/12264: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:42/12267: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by syz-executor.5/12269: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 2 locks held by kworker/u4:43/12276: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by syz-executor.5/12280: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 2 locks held by kworker/u4:44/12313: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:45/12315: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 2 locks held by kworker/u4:46/12317: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by syz-executor.5/12324: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 2 locks held by kworker/u4:47/12337: #0: ("events_unbound"){+.+.}, at: [<0000000081c922ed>] process_one_work+0x6e5/0x1510 kernel/workqueue.c:2105 #1: ((&sub_info->work)){+.+.}, at: [<000000000865e813>] process_one_work+0x71b/0x1510 kernel/workqueue.c:2109 1 lock held by syz-executor.5/12339: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12350: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12357: #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] lock_anon_vma_root mm/rmap.c:238 [inline] #0: (&anon_vma->rwsem){++++}, at: [<00000000f89692b7>] unlink_anon_vmas+0x175/0x7d0 mm/rmap.c:388 1 lock held by syz-executor.5/12362: