Bluetooth: hci11 command 0x0419 tx timeout
Bluetooth: hci8 command 0x0406 tx timeout
Bluetooth: hci9 command 0x0406 tx timeout
Bluetooth: hci12 command 0x0409 tx timeout
Bluetooth: hci12 command 0x041b tx timeout
BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 275s!
INFO: task kworker/u4:2:34 blocked for more than 140 seconds.
Showing busy workqueues and worker pools:
workqueue events: flags=0x0
Not tainted 4.14.296-syzkaller #0
pwq 0:
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:2 D28168 34 2 0x80000000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
cpus=0 node=0 flags=0x0 nice=0 active=30/256 refcnt=31
in-flight: 4315:rtc_timer_do_work
pending: wait_rcu_exp_gp, defense_work_handler, vmstat_shepherd, defense_work_handler
, defense_work_handler
Call Trace:
, defense_work_handler
context_switch kernel/sched/core.c:2811 [inline]
__schedule+0x88b/0x1de0 kernel/sched/core.c:3387
, defense_work_handler, defense_work_handler, macvlan_process_broadcast, cache_reap, macvlan_process_broadcast, macvlan_process_broadcast, macvlan_process_broadcast, free_obj_work, key_garbage_collector, wait_rcu_exp_gp
, hci_cmd_timeout
, l2cap_info_timeout
, hci_cmd_timeout, l2cap_info_timeout, rfkill_any_led_trigger_worker, bpf_prog_free_deferred, hci_cmd_timeout, bpf_prog_free_deferred, l2cap_info_timeout, switchdev_deferred_process_work, hci_cmd_timeout
schedule+0x8d/0x1b0 kernel/sched/core.c:3431
, hci_cmd_timeout
schedule_timeout+0x80a/0xe90 kernel/time/timer.c:1724
, l2cap_info_timeout
workqueue events_long: flags=0x0
pwq 0:
cpus=0 node=0
flags=0x0 nice=0
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
active=1/256 refcnt=2
pending: gc_worker
workqueue events_unbound: flags=0x2
pwq 4: cpus=0-1 flags=0x4 nice=0 active=4/512 refcnt=7
in-flight: 34:fsnotify_mark_destroy_workfn fsnotify_mark_destroy_workfn, 9337:fsnotify_connector_destroy_workfn fsnotify_connector_destroy_workfn
workqueue events_power_efficient: flags=0x80
pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=5/256 refcnt=6
pending: process_srcu, fb_flashcursor, neigh_periodic_work, neigh_periodic_work, check_lifetime
workqueue mm_percpu_wq: flags=0x8
pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/256 refcnt=2
pending: vmstat_update
workqueue ipv6_addrconf: flags=0x40008
__synchronize_srcu+0x10a/0x1d0 kernel/rcu/srcutree.c:898
pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1 refcnt=8
pending: addrconf_dad_work
delayed: addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_dad_work, addrconf_verify_work
pool 0:
cpus=0 node=0 flags=0x0 nice=0 hung=276s workers=5 idle: 9062 24 9246 3
pool 4: cpus=0-1 flags=0x4 nice=0 hung=0s workers=7 idle: 2861 22 1153 5 9306
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 kworker/u4:6:9337 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u4:6 D29136 9337 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 syz-executor.1:9604 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D29000 9604 7994 0x80000000
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_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762
namespace_unlock fs/namespace.c:1448 [inline]
drop_collected_mounts+0x147/0x160 fs/namespace.c:1888
put_mnt_ns fs/namespace.c:3348 [inline]
put_mnt_ns+0x42/0x60 fs/namespace.c:3344
free_nsproxy+0x40/0x1f0 kernel/nsproxy.c:176
switch_task_namespaces+0x8f/0xb0 kernel/nsproxy.c:229
do_exit+0xa3f/0x2850 kernel/exit.c:867
SYSC_exit kernel/exit.c:934 [inline]
SyS_exit+0x1e/0x20 kernel/exit.c:932
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f18c53155a9
RSP: 002b:0000000020000ed8 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007f18c5435f80 RCX: 00007f18c53155a9
RDX: 00007f18c53155a9 RSI: 0000000020000f00 RDI: 000000000000000b
RBP: 000000000000000b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd8dda159f R14: 00007f18c3888300 R15: 0000000000022000
INFO: task syz-executor.1:9619 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D29296 9619 7994 0x80000000
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
exp_funnel_lock kernel/rcu/tree_exp.h:295 [inline]
_synchronize_rcu_expedited+0x5f6/0x770 kernel/rcu/tree_exp.h:596
synchronize_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762
namespace_unlock fs/namespace.c:1448 [inline]
drop_collected_mounts+0x147/0x160 fs/namespace.c:1888
put_mnt_ns fs/namespace.c:3348 [inline]
put_mnt_ns+0x42/0x60 fs/namespace.c:3344
free_nsproxy+0x40/0x1f0 kernel/nsproxy.c:176
switch_task_namespaces+0x8f/0xb0 kernel/nsproxy.c:229
do_exit+0xa3f/0x2850 kernel/exit.c:867
SYSC_exit kernel/exit.c:934 [inline]
SyS_exit+0x1e/0x20 kernel/exit.c:932
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f18c53155a9
RSP: 002b:00007f18c3888118 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007f18c5435f80 RCX: 00007f18c53155a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f18c53707b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd8dda159f R14: 00007f18c3888300 R15: 0000000000022000
INFO: task syz-executor.5:9626 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D28912 9626 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
exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline]
_synchronize_rcu_expedited+0x32d/0x770 kernel/rcu/tree_exp.h:596
synchronize_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762
pfkey_release+0x20e/0x2b0 net/key/af_key.c:193
__sock_release+0xcd/0x2b0 net/socket.c:602
sock_close+0x15/0x20 net/socket.c:1139
__fput+0x25f/0x7a0 fs/file_table.c:210
task_work_run+0x11f/0x190 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f95a996337b
RSP: 002b:00007fff6feada90 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000005 RCX: 00007f95a996337b
RDX: 00007f95a9526628 RSI: ffffffffffffffff RDI: 0000000000000004
RBP: 00007f95a9ad3980 R08: 0000000000000000 R09: 00007f95a9526000
R10: 00007f95a9526630 R11: 0000000000000293 R12: 0000000000048339
R13: 00007fff6feadb90 R14: 00007f95a9ad1f80 R15: 0000000000000032
INFO: task syz-executor.1:9630 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.1 D29296 9630 7994 0x80000000
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
exp_funnel_lock kernel/rcu/tree_exp.h:295 [inline]
_synchronize_rcu_expedited+0x5f6/0x770 kernel/rcu/tree_exp.h:596
synchronize_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762
namespace_unlock fs/namespace.c:1448 [inline]
drop_collected_mounts+0x147/0x160 fs/namespace.c:1888
put_mnt_ns fs/namespace.c:3348 [inline]
put_mnt_ns+0x42/0x60 fs/namespace.c:3344
free_nsproxy+0x40/0x1f0 kernel/nsproxy.c:176
switch_task_namespaces+0x8f/0xb0 kernel/nsproxy.c:229
do_exit+0xa3f/0x2850 kernel/exit.c:867
SYSC_exit kernel/exit.c:934 [inline]
SyS_exit+0x1e/0x20 kernel/exit.c:932
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f18c53155a9
RSP: 002b:00007f18c3888118 EFLAGS: 00000246 ORIG_RAX: 000000000000003c
RAX: ffffffffffffffda RBX: 00007f18c5435f80 RCX: 00007f18c53155a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f18c53707b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd8dda159f R14: 00007f18c3888300 R15: 0000000000022000
INFO: task syz-executor.3:9639 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.3 D28912 9639 7996 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
exp_funnel_lock kernel/rcu/tree_exp.h:295 [inline]
_synchronize_rcu_expedited+0x5f6/0x770 kernel/rcu/tree_exp.h:596
synchronize_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762
synchronize_net+0x3a/0x40 net/core/dev.c:8250
packet_release+0x740/0xa80 net/packet/af_packet.c:3117
__sock_release+0xcd/0x2b0 net/socket.c:602
sock_close+0x15/0x20 net/socket.c:1139
__fput+0x25f/0x7a0 fs/file_table.c:210
task_work_run+0x11f/0x190 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:191 [inline]
exit_to_usermode_loop+0x1ad/0x200 arch/x86/entry/common.c:164
prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7f2822f4937b
RSP: 002b:00007ffe066e8870 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007f2822f4937b
RDX: 00007f2822b0c0e8 RSI: ffffffffffffffff RDI: 0000000000000003
RBP: 00007f28230b9980 R08: 0000000000000000 R09: 00007f2822b0c000
R10: 00007f2822b0c0f0 R11: 0000000000000293 R12: 0000000000048e78
R13: 00007ffe066e8970 R14: 00007f28230b7f80 R15: 0000000000000032
INFO: task syz-executor.5:9679 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.5 D27528 9679 1 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
exp_funnel_lock kernel/rcu/tree_exp.h:295 [inline]
_synchronize_rcu_expedited+0x5f6/0x770 kernel/rcu/tree_exp.h:596
synchronize_rcu+0x98/0x130 kernel/rcu/tree_plugin.h:762
synchronize_net+0x3a/0x40 net/core/dev.c:8250
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+0x912/0xbb0 net/bridge/netfilter/ebtables.c:1227
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
unshare_nsproxy_namespaces+0xa1/0x1d0 kernel/nsproxy.c:206
SYSC_unshare kernel/fork.c:2413 [inline]
SyS_unshare+0x308/0x7f0 kernel/fork.c:2363
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x7fc6d819db67
RSP: 002b:00007ffd82228f38 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007ffd82229578 RCX: 00007fc6d819db67
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000006
R13: 00007ffd82229010 R14: 00007fc6d82bd4f8 R15: 0000000000000006
INFO: task syz-executor.0:9693 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.0 D29560 9693 7987 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: 0033:0x7f340524c5a9
RSP: 002b:00007f34037bf168 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f340536cf80 RCX: 00007f340524c5a9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000040
RBP: 00007f34052a77b0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdb2e5cc5f R14: 00007f34037bf300 R15: 0000000000022000
INFO: task syz-executor.2:9696 blocked for more than 140 seconds.
Not tainted 4.14.296-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
syz-executor.2 D30312 9696 7993 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: 0033:0x7f78a1f575a9
RSP: 002b:00007f78a04ca168 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f78a2077f80 RCX: 00007f78a1f575a9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007f78a1fb27b0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd8c202b6f R14: 00007f78a04ca300 R15: 0000000000022000
Showing all locks held in the system:
2 locks held by kworker/u4:2/34:
#0: ("events_unbound"){+.+.}, at: [<ffffffff81364eb0>] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088
#1: ((reaper_work).work){+.+.}, at: [<ffffffff81364ee6>] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092
1 lock held by khungtaskd/1533:
#0: (tasklist_lock){.+.+}, at: [<ffffffff87028579>] debug_show_all_locks+0x7c/0x21a kernel/locking/lockdep.c:4548
2 locks held by kworker/u4:6/9337:
#0: ("events_unbound"){+.+.}, at: [<ffffffff81364eb0>] process_one_work+0x6b0/0x14a0 kernel/workqueue.c:2088
#1: (connector_reaper_work){+.+.}, at: [<ffffffff81364ee6>] process_one_work+0x6e6/0x14a0 kernel/workqueue.c:2092
1 lock held by syz-executor.1/9604:
#0: (rcu_preempt_state.exp_mutex){+.+.}, at: [<ffffffff814701d2>] exp_funnel_lock kernel/rcu/tree_exp.h:272 [inline]
#0: (rcu_preempt_state.exp_mutex){+.+.}, at: [<ffffffff814701d2>] _synchronize_rcu_expedited+0x2c2/0x770 kernel/rcu/tree_exp.h:596
2 locks held by syz-executor.5/9626:
#0: (&sb->s_type->i_mutex_key#13){+.+.}, at: [<ffffffff85bca2c6>] inode_lock include/linux/fs.h:719 [inline]
#0: (&sb->s_type->i_mutex_key#13){+.+.}, at: [<ffffffff85bca2c6>] __sock_release+0x86/0x2b0 net/socket.c:601
#1: (rcu_preempt_state.exp_mutex){+.+.}, at: [<ffffffff8147023d>] exp_funnel_lock kernel/rcu/tree_exp.h:305 [inline]
#1: (rcu_preempt_state.exp_mutex){+.+.}, at: [<ffffffff8147023d>] _synchronize_rcu_expedited+0x32d/0x770 kernel/rcu/tree_exp.h:596
1 lock held by syz-executor.3/9639:
#0: (&sb->s_type->i_mutex_key#13){+.+.}, at: [<ffffffff85bca2c6>] inode_lock include/linux/fs.h:719 [inline]
#0: (&sb->s_type->i_mutex_key#13){+.+.}, at: [<ffffffff85bca2c6>] __sock_release+0x86/0x2b0 net/socket.c:601
1 lock held by syz-executor.5/9679:
#0: (net_mutex){+.+.}, at: [<ffffffff85c20676>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413
3 locks held by syz-executor.0/9693:
#0: (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff816643ea>] SYSC_perf_event_open kernel/events/core.c:10126 [inline]
#0: (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff816643ea>] SyS_perf_event_open+0x131a/0x2530 kernel/events/core.c:10032
#1: (perf_sched_mutex){+.+.}, at: [<ffffffff8163a724>] account_event kernel/events/core.c:9512 [inline]
#1: (perf_sched_mutex){+.+.}, at: [<ffffffff8163a724>] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704
#2: (rcu_sched_state.exp_mutex){+.+.}, at: [<ffffffff814701d2>] exp_funnel_lock kernel/rcu/tree_exp.h:272 [inline]
#2: (rcu_sched_state.exp_mutex){+.+.}, at: [<ffffffff814701d2>] _synchronize_rcu_expedited+0x2c2/0x770 kernel/rcu/tree_exp.h:596
2 locks held by syz-executor.2/9696:
#0: (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff816643ea>] SYSC_perf_event_open kernel/events/core.c:10126 [inline]
#0: (&sig->cred_guard_mutex){+.+.}, at: [<ffffffff816643ea>] SyS_perf_event_open+0x131a/0x2530 kernel/events/core.c:10032
#1: (perf_sched_mutex){+.+.}, at: [<ffffffff8163a724>] account_event kernel/events/core.c:9512 [inline]
#1: (perf_sched_mutex){+.+.}, at: [<ffffffff8163a724>] perf_event_alloc.part.0+0x1c94/0x2640 kernel/events/core.c:9704
1 lock held by syz-executor.5/9775:
#0: (net_mutex){+.+.}, at: [<ffffffff85c20676>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413
1 lock held by syz-executor.3/9786:
#0: (net_mutex){+.+.}, at: [<ffffffff85c20676>] copy_net_ns+0x156/0x440 net/core/net_namespace.c:413
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 1533 Comm: khungtaskd Not tainted 4.14.296-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4315 Comm: kworker/0:2 Not tainted 4.14.296-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Workqueue: events rtc_timer_do_work
task: ffff8880a527c100 task.stack: ffff8880a5260000
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline]
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:192
RSP: 0018:ffff8880a5267b90 EFLAGS: 00000282
RAX: 1ffffffff11e1359 RBX: 0000000000000282 RCX: 1ffff11014a4f93f
RDX: dffffc0000000000 RSI: ffff8880a527c9d8 RDI: 0000000000000282
RBP: ffff88823784b258 R08: ffffffff8b9cb410 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000282
R13: ffff88823784b258 R14: ffff88823784b320 R15: ffffffff84b10770
FS: 0000000000000000(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd11353b000 CR3: 00000000a1706000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
spin_unlock_irqrestore include/linux/spinlock.h:372 [inline]
rtc_handle_legacy_irq+0x109/0x180 drivers/rtc/interface.c:521
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: fa 48 c7 c0 c8 9a f0 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 2f 48 83 3d 9c fe cb 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb b2 e8 b5 7f db f9 eb c0 0f 0b 0f 0b 48 c7 c7
----------------
Code disassembly (best guess):
0: fa cli
1: 48 c7 c0 c8 9a f0 88 mov $0xffffffff88f09ac8,%rax
8: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx
f: fc ff df
12: 48 c1 e8 03 shr $0x3,%rax
16: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1)
1a: 75 2f jne 0x4b
1c: 48 83 3d 9c fe cb 01 cmpq $0x0,0x1cbfe9c(%rip) # 0x1cbfec0
23: 00
24: 74 15 je 0x3b
26: 48 89 df mov %rbx,%rdi
29: 57 push %rdi
2a: 9d popfq
* 2b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction
30: eb b2 jmp 0xffffffe4
32: e8 b5 7f db f9 callq 0xf9db7fec
37: eb c0 jmp 0xfffffff9
39: 0f 0b ud2
3b: 0f 0b ud2
3d: 48 rex.W
3e: c7 .byte 0xc7
3f: c7 .byte 0xc7