Bluetooth: hci21 command 0x040f tx timeout Bluetooth: hci17 command 0x0419 tx timeout Bluetooth: hci19 command 0x0419 tx timeout Bluetooth: hci18 command 0x0419 tx timeout Bluetooth: hci21 command 0x0419 tx timeout BUG: workqueue lockup - pool cpus=1 node=0 flags=0x0 nice=0 stuck for 279s! Showing busy workqueues and worker pools: workqueue events: flags=0x0 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=31/256 refcnt=32 in-flight: 8004:rtc_timer_do_work pending: defense_work_handler, bpf_prog_free_deferred, cache_reap, bpf_prog_free_deferred, defense_work_handler, linkwatch_event, defense_work_handler, defense_work_handler, macvlan_process_broadcast, macvlan_process_broadcast, wait_rcu_exp_gp, wait_rcu_exp_gp, bpf_prog_free_deferred, macvlan_process_broadcast, defense_work_handler, macvlan_process_broadcast, bpf_prog_free_deferred, bpf_prog_free_deferred, bpf_prog_free_deferred, bpf_prog_free_deferred, vhci_open_timeout, vhci_open_timeout, vhci_open_timeout, rfkill_any_led_trigger_worker, bpf_prog_free_deferred, vhci_open_timeout, switchdev_deferred_process_work, bpf_prog_free_deferred, hci_cmd_timeout, l2cap_info_timeout workqueue events_unbound: flags=0x2 pwq 4: cpus=0-1 flags=0x4 nice=0 active=4/512 refcnt=7 in-flight: 2850:fsnotify_mark_destroy_workfn fsnotify_mark_destroy_workfn, 2807:fsnotify_connector_destroy_workfn fsnotify_connector_destroy_workfn workqueue events_freezable: flags=0x4 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: update_balloon_stats_func workqueue events_power_efficient: flags=0x80 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=4/256 refcnt=5 pending: process_srcu, fb_flashcursor, neigh_periodic_work, check_lifetime workqueue mm_percpu_wq: flags=0x8 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: vmstat_update workqueue dm_bufio_cache: flags=0x8 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/256 refcnt=2 pending: work_fn workqueue ipv6_addrconf: flags=0x40008 pwq 2: cpus=1 node=0 flags=0x0 nice=0 active=1/1 refcnt=23 pending: addrconf_dad_work delayed: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_verify_work workqueue bat_events: flags=0xe000a pwq 4: cpus=0-1 flags=0x4 nice=0 active=1/1 refcnt=9 pending: batadv_bla_periodic_work delayed: batadv_bla_periodic_work, batadv_dat_purge, batadv_dat_purge, batadv_purge_orig, batadv_iv_send_outstanding_bat_ogm_packet pool 2: cpus=1 node=0 flags=0x0 nice=0 hung=279s workers=5 idle: 24 19 9209 3507 pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=7 idle: 23 35 5 9386 3590 INFO: task kworker/u4:3:2807 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:3 D26472 2807 2 0x80000000 Workqueue: events_unbound fsnotify_connector_destroy_workfn Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 __synchronize_srcu+0x10a/0x1d0 kernel/rcu/srcutree.c:898 fsnotify_connector_destroy_workfn+0x49/0xa0 fs/notify/mark.c:156 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 INFO: task kworker/u4:4:2850 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:4 D26880 2850 2 0x80000000 Workqueue: events_unbound fsnotify_mark_destroy_workfn Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724 do_wait_for_common kernel/sched/completion.c:91 [inline] __wait_for_common kernel/sched/completion.c:112 [inline] wait_for_common+0x272/0x430 kernel/sched/completion.c:123 __synchronize_srcu+0x10a/0x1d0 kernel/rcu/srcutree.c:898 fsnotify_mark_destroy_workfn+0xed/0x2e0 fs/notify/mark.c:757 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 INFO: task syz-executor.5:9587 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D30152 9587 7990 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 _synchronize_rcu_expedited+0x522/0x770 kernel/rcu/tree_exp.h:615 synchronize_sched+0xd8/0x1b0 kernel/rcu/tree.c:3239 account_event kernel/events/core.c:9520 [inline] perf_event_alloc.part.0+0x1e6c/0x2640 kernel/events/core.c:9704 perf_event_alloc kernel/events/core.c:10042 [inline] SYSC_perf_event_open kernel/events/core.c:10146 [inline] SyS_perf_event_open+0x683/0x2530 kernel/events/core.c:10032 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f9f79081279 RSP: 002b:00007f9f779f6168 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f9f79193f80 RCX: 00007f9f79081279 RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f9f790db189 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffccb4328bf R14: 00007f9f779f6300 R15: 0000000000022000 INFO: task syz-executor.5:9600 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.5 D28816 9600 7990 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 dev_ioctl+0x42e/0xbe0 net/core/dev_ioctl.c:588 sock_do_ioctl net/socket.c:981 [inline] sock_ioctl+0x164/0x4c0 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f9f79081279 RSP: 002b:00007f9f779d5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f9f79194050 RCX: 00007f9f79081279 RDX: 0000000020000000 RSI: 00000000000089f1 RDI: 0000000000000004 RBP: 00007f9f790db189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffccb4328bf R14: 00007f9f779d5300 R15: 0000000000022000 INFO: task syz-executor.0:9591 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29816 9591 7989 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 account_event kernel/events/core.c:9512 [inline] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704 perf_event_alloc kernel/events/core.c:10042 [inline] SYSC_perf_event_open kernel/events/core.c:10146 [inline] SyS_perf_event_open+0x683/0x2530 kernel/events/core.c:10032 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f647ad37279 RSP: 002b:00007f64796ac168 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f647ae49f80 RCX: 00007f647ad37279 RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f647ad91189 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc29f410ff R14: 00007f64796ac300 R15: 0000000000022000 INFO: task syz-executor.0:9602 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28816 9602 7989 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 _synchronize_rcu_expedited+0x522/0x770 kernel/rcu/tree_exp.h:615 synchronize_net+0x2b/0x40 net/core/dev.c:8248 dev_deactivate_many+0x3d9/0x970 net/sched/sch_generic.c:936 __dev_close_many+0x11d/0x270 net/core/dev.c:1437 __dev_close net/core/dev.c:1462 [inline] __dev_change_flags+0x21f/0x540 net/core/dev.c:6800 dev_change_flags+0x7e/0x130 net/core/dev.c:6868 dev_ifsioc+0x23c/0x7d0 net/core/dev_ioctl.c:257 dev_ioctl+0x222/0xbe0 net/core/dev_ioctl.c:566 sock_do_ioctl net/socket.c:981 [inline] sock_ioctl+0x164/0x4c0 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f647ad37279 RSP: 002b:00007f647968b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f647ae4a050 RCX: 00007f647ad37279 RDX: 00000000200005c0 RSI: 0000000000008914 RDI: 0000000000000007 RBP: 00007f647ad91189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc29f410ff R14: 00007f647968b300 R15: 0000000000022000 INFO: task syz-executor.0:9612 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D29264 9612 7989 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 dev_ioctl+0x631/0xbe0 net/core/dev_ioctl.c:514 sock_do_ioctl net/socket.c:981 [inline] sock_ioctl+0x164/0x4c0 net/socket.c:1071 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:500 [inline] do_vfs_ioctl+0x75a/0xff0 fs/ioctl.c:684 SYSC_ioctl fs/ioctl.c:701 [inline] SyS_ioctl+0x7f/0xb0 fs/ioctl.c:692 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f647ad37279 RSP: 002b:00007f6479649168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f647ae4a1f0 RCX: 00007f647ad37279 RDX: 0000000020000680 RSI: 0000000000008923 RDI: 0000000000000007 RBP: 00007f647ad91189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc29f410ff R14: 00007f6479649300 R15: 0000000000022000 INFO: task syz-executor.0:9618 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.0 D28352 9618 7989 0x80000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline] _synchronize_rcu_expedited+0x32d/0x770 kernel/rcu/tree_exp.h:596 synchronize_net+0x2b/0x40 net/core/dev.c:8248 nf_register_net_hook+0x6a5/0xa40 net/netfilter/core.c:295 nf_register_net_hooks+0x47/0xa0 net/netfilter/core.c:383 ebt_register_table+0x9a5/0xc50 net/bridge/netfilter/ebtables.c:1231 ops_init+0xaa/0x3e0 net/core/net_namespace.c:118 setup_net+0x22f/0x530 net/core/net_namespace.c:298 copy_net_ns+0x19b/0x440 net/core/net_namespace.c:422 create_new_namespaces+0x375/0x720 kernel/nsproxy.c:107 copy_namespaces+0x27b/0x310 kernel/nsproxy.c:165 copy_process.part.0+0x25f8/0x71c0 kernel/fork.c:1794 copy_process kernel/fork.c:1606 [inline] _do_fork+0x184/0xc80 kernel/fork.c:2092 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f647ad37279 RSP: 002b:00007f6479628118 EFLAGS: 00000202 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f647ae4a2c0 RCX: 00007f647ad37279 RDX: 0000000020000000 RSI: 0000000000000000 RDI: 0000000064800280 RBP: 00007f647ad91189 R08: 0000000020000cc0 R09: 0000000020000cc0 R10: 0000000020000300 R11: 0000000000000202 R12: 0000000000000000 R13: 00007ffc29f410ff R14: 00007f6479628300 R15: 0000000000022000 INFO: task syz-executor.3:9593 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.3 D30312 9593 7997 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 account_event kernel/events/core.c:9512 [inline] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704 perf_event_alloc kernel/events/core.c:10042 [inline] SYSC_perf_event_open kernel/events/core.c:10146 [inline] SyS_perf_event_open+0x683/0x2530 kernel/events/core.c:10032 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f682a5d4279 RSP: 002b:00007f6828f49168 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f682a6e6f80 RCX: 00007f682a5d4279 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00007f682a62e189 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdc14a4a1f R14: 00007f6828f49300 R15: 0000000000022000 INFO: task syz-executor.2:9594 blocked for more than 140 seconds. Not tainted 4.14.290-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor.2 D29880 9594 7998 0x00000004 Call Trace: context_switch kernel/sched/core.c:2811 [inline] __schedule+0x88b/0x1de0 kernel/sched/core.c:3387 schedule+0x8d/0x1b0 kernel/sched/core.c:3431 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:3489 __mutex_lock_common kernel/locking/mutex.c:833 [inline] __mutex_lock+0x669/0x1310 kernel/locking/mutex.c:893 account_event kernel/events/core.c:9512 [inline] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704 perf_event_alloc kernel/events/core.c:10042 [inline] SYSC_perf_event_open kernel/events/core.c:10146 [inline] SyS_perf_event_open+0x683/0x2530 kernel/events/core.c:10032 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f865f1eb279 RSP: 002b:00007f865db60168 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007f865f2fdf80 RCX: 00007f865f1eb279 RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 00007f865f245189 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffb972d5bf R14: 00007f865db60300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/1533: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548 2 locks held by kworker/u4:3/2807: #0: ("events_unbound"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088 #1: (connector_reaper_work){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092 2 locks held by kworker/u4:4/2850: #0: ("events_unbound"){+.+.}, at: [] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088 #1: ((reaper_work).work){+.+.}, at: [] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092 3 locks held by syz-executor.5/9587: #0: (&sig->cred_guard_mutex){+.+.}, at: [] SYSC_perf_event_open kernel/events/core.c:10126 [inline] #0: (&sig->cred_guard_mutex){+.+.}, at: [] SyS_perf_event_open+0x131a/0x2530 kernel/events/core.c:10032 #1: (perf_sched_mutex){+.+.}, at: [] account_event kernel/events/core.c:9512 [inline] #1: (perf_sched_mutex){+.+.}, at: [] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704 #2: (rcu_sched_state.exp_mutex){+.+.}, at: [] exp_funnel_lock kernel/rcu/tree_exp.h:272 [inline] #2: (rcu_sched_state.exp_mutex){+.+.}, at: [] _synchronize_rcu_expedited+0x2c2/0x770 kernel/rcu/tree_exp.h:596 1 lock held by syz-executor.5/9600: #0: (rtnl_mutex){+.+.}, at: [] dev_ioctl+0x42e/0xbe0 net/core/dev_ioctl.c:588 2 locks held by syz-executor.0/9591: #0: (&sig->cred_guard_mutex){+.+.}, at: [] SYSC_perf_event_open kernel/events/core.c:10126 [inline] #0: (&sig->cred_guard_mutex){+.+.}, at: [] SyS_perf_event_open+0x131a/0x2530 kernel/events/core.c:10032 #1: (perf_sched_mutex){+.+.}, at: [] account_event kernel/events/core.c:9512 [inline] #1: (perf_sched_mutex){+.+.}, at: [] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704 2 locks held by syz-executor.0/9602: #0: (rtnl_mutex){+.+.}, at: [] dev_ioctl+0x214/0xbe0 net/core/dev_ioctl.c:565 #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [] exp_funnel_lock kernel/rcu/tree_exp.h:272 [inline] #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [] _synchronize_rcu_expedited+0x2c2/0x770 kernel/rcu/tree_exp.h:596 1 lock held by syz-executor.0/9612: #0: (rtnl_mutex){+.+.}, at: [] dev_ioctl+0x631/0xbe0 net/core/dev_ioctl.c:514 2 locks held by syz-executor.0/9618: #0: (net_mutex){+.+.}, at: [] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413 #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [] exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline] #1: (rcu_preempt_state.exp_mutex){+.+.}, at: [] _synchronize_rcu_expedited+0x32d/0x770 kernel/rcu/tree_exp.h:596 2 locks held by syz-executor.3/9593: #0: (&sig->cred_guard_mutex){+.+.}, at: [] SYSC_perf_event_open kernel/events/core.c:10126 [inline] #0: (&sig->cred_guard_mutex){+.+.}, at: [] SyS_perf_event_open+0x131a/0x2530 kernel/events/core.c:10032 #1: (perf_sched_mutex){+.+.}, at: [] account_event kernel/events/core.c:9512 [inline] #1: (perf_sched_mutex){+.+.}, at: [] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704 2 locks held by syz-executor.2/9594: #0: (&sig->cred_guard_mutex){+.+.}, at: [] SYSC_perf_event_open kernel/events/core.c:10126 [inline] #0: (&sig->cred_guard_mutex){+.+.}, at: [] SyS_perf_event_open+0x131a/0x2530 kernel/events/core.c:10032 #1: (perf_sched_mutex){+.+.}, at: [] account_event kernel/events/core.c:9512 [inline] #1: (perf_sched_mutex){+.+.}, at: [] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704 1 lock held by syz-executor.2/9603: #0: (rtnl_mutex){+.+.}, at: [] dev_ioctl+0x42e/0xbe0 net/core/dev_ioctl.c:588 2 locks held by syz-executor.1/9605: #0: (&sig->cred_guard_mutex){+.+.}, at: [] SYSC_perf_event_open kernel/events/core.c:10126 [inline] #0: (&sig->cred_guard_mutex){+.+.}, at: [] SyS_perf_event_open+0x131a/0x2530 kernel/events/core.c:10032 #1: (perf_sched_mutex){+.+.}, at: [] account_event kernel/events/core.c:9512 [inline] #1: (perf_sched_mutex){+.+.}, at: [] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704 1 lock held by syz-executor.1/9611: #0: (rtnl_mutex){+.+.}, at: [] dev_ioctl+0x42e/0xbe0 net/core/dev_ioctl.c:588 1 lock held by syz-executor.2/9662: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.0/9668: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.5/9669: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.1/9670: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.2/9703: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.1/9711: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.5/9710: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.2/9739: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.5/9742: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.0/9743: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.3/9756: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.2/9781: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.0/9784: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.5/9785: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.3/9797: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 1 lock held by syz-executor.1/9798: #0: (rtnl_mutex){+.+.}, at: [] rtnl_lock net/core/rtnetlink.c:72 [inline] #0: (rtnl_mutex){+.+.}, at: [] rtnetlink_rcv_msg+0x31d/0xb10 net/core/rtnetlink.c:4317 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 1533 Comm: khungtaskd Not tainted 4.14.290-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x180 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:140 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:195 [inline] watchdog+0x5b9/0xb40 kernel/hung_task.c:274 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8004 Comm: kworker/1:3 Not tainted 4.14.290-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Workqueue: events rtc_timer_do_work task: ffff8880b002c580 task.stack: ffff888095308000 RIP: 0010:__read_once_size include/linux/compiler.h:185 [inline] RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:2361 [inline] RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:2381 [inline] RIP: 0010:validate_chain kernel/locking/lockdep.c:2435 [inline] RIP: 0010:__lock_acquire+0xa67/0x3f20 kernel/locking/lockdep.c:3491 RSP: 0018:ffff88809530f960 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: 4aa88de453414cef RCX: 0000000000004d82 RDX: 1ffffffff1738ee2 RSI: 0000000086fb92f6 RDI: ffff8880b002cea1 RBP: 0000000000000000 R08: ffffffff8b9c7710 R09: 00000000000c0688 R10: ffff8880b002ce80 R11: ffff8880b002c580 R12: ffff8880b002ce98 R13: 0000000000000000 R14: 4ba79fb2f8edb179 R15: ffffffff8beccd80 FS: 0000000000000000(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd4b3902000 CR3: 000000009367f000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x8c/0xc0 kernel/locking/spinlock.c:160 rtc_handle_legacy_irq+0x82/0x180 drivers/rtc/interface.c:518 rtc_timer_do_work+0x1f7/0x5a0 drivers/rtc/interface.c:881 process_one_work+0x793/0x14a0 kernel/workqueue.c:2117 worker_thread+0x5cc/0xff0 kernel/workqueue.c:2251 kthread+0x30d/0x420 kernel/kthread.c:232 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:404 Code: 48 b8 00 00 00 00 00 fc ff df 49 0f af ce 48 c1 e9 31 4c 8d 04 cd 00 0b 9a 8b 4c 89 c2 48 c1 ea 03 80 3c 02 00 0f 85 17 2d 00 00 <48> 8b 1c cd 00 0b 9a 8b 48 85 db 74 55 48 83 eb 08 74 4f 48 bd ---------------- Code disassembly (best guess): 0: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 7: fc ff df a: 49 0f af ce imul %r14,%rcx e: 48 c1 e9 31 shr $0x31,%rcx 12: 4c 8d 04 cd 00 0b 9a lea -0x7465f500(,%rcx,8),%r8 19: 8b 1a: 4c 89 c2 mov %r8,%rdx 1d: 48 c1 ea 03 shr $0x3,%rdx 21: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 25: 0f 85 17 2d 00 00 jne 0x2d42 * 2b: 48 8b 1c cd 00 0b 9a mov -0x7465f500(,%rcx,8),%rbx <-- trapping instruction 32: 8b 33: 48 85 db test %rbx,%rbx 36: 74 55 je 0x8d 38: 48 83 eb 08 sub $0x8,%rbx 3c: 74 4f je 0x8d 3e: 48 rex.W 3f: bd .byte 0xbd