INFO: task khugepaged:34 blocked for more than 143 seconds.
Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:khugepaged state:D
stack:25664 pid:34 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
__flush_work+0x130/0x1b0 kernel/workqueue.c:3189
__lru_add_drain_all+0x504/0x570 mm/swap.c:897
khugepaged_do_scan mm/khugepaged.c:2599 [inline]
khugepaged+0x16b/0x1b90 mm/khugepaged.c:2668
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/0:2:901 blocked for more than 144 seconds.
Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:2 state:D
stack:21184 pid:901 ppid:2 flags:0x00004000
Workqueue: events free_ipc
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline]
synchronize_rcu_expedited+0x77c/0x890 kernel/rcu/tree_exp.h:992
synchronize_rcu+0x136/0x3e0 kernel/rcu/tree.c:3499
free_ipc+0xb7/0x280 ipc/namespace.c:176
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.1:5025 blocked for more than 145 seconds.
Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D
stack:20856 pid:5025 ppid:1 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6804
__mutex_lock_common+0xe33/0x2530 kernel/locking/mutex.c:679
__mutex_lock kernel/locking/mutex.c:747 [inline]
mutex_lock_nested+0x1b/0x20 kernel/locking/mutex.c:799
exp_funnel_lock kernel/rcu/tree_exp.h:325 [inline]
synchronize_rcu_expedited+0x46c/0x890 kernel/rcu/tree_exp.h:992
synchronize_rcu+0x136/0x3e0 kernel/rcu/tree.c:3499
hci_chan_del+0x119/0x190 net/bluetooth/hci_conn.c:2662
l2cap_conn_del+0x4da/0x670 net/bluetooth/l2cap_core.c:1934
hci_disconn_cfm include/net/bluetooth/hci_core.h:1834 [inline]
hci_conn_hash_flush+0x105/0x220 net/bluetooth/hci_conn.c:2484
hci_dev_close_sync+0xa35/0x1020 net/bluetooth/hci_sync.c:4941
hci_dev_do_close net/bluetooth/hci_core.c:554 [inline]
hci_unregister_dev+0x1ca/0x480 net/bluetooth/hci_core.c:2703
vhci_release+0x83/0xd0 drivers/bluetooth/hci_vhci.c:669
__fput+0x3b7/0x890 fs/file_table.c:321
task_work_run+0x24a/0x300 kernel/task_work.c:179
exit_task_work include/linux/task_work.h:38 [inline]
do_exit+0x68f/0x2290 kernel/exit.c:874
do_group_exit+0x206/0x2c0 kernel/exit.c:1024
get_signal+0x1709/0x17e0 kernel/signal.c:2876
arch_do_signal_or_restart+0x91/0x670 arch/x86/kernel/signal.c:306
exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
__syscall_exit_to_user_mode_work kernel/entry/common.c:286 [inline]
syscall_exit_to_user_mode+0x64/0x280 kernel/entry/common.c:297
do_syscall_64+0x4d/0xc0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fd8d008d5d7
RSP: 002b:00007fffcc3b4788 EFLAGS: 00000246
ORIG_RAX: 00000000000000a6
RAX: fffffffffffffff4 RBX: 0000000000000000 RCX: 00007fd8d008d5d7
RDX: 00007fffcc3b485e RSI: 000000000000000a RDI: 00007fffcc3b4850
RBP: 00007fffcc3b4850 R08: 00000000ffffffff R09: 00007fffcc3b4620
R10: 0000555556dd6873 R11: 0000000000000246 R12: 00007fd8d00e6cdc
R13: 00007fffcc3b5910 R14: 0000555556dd6810 R15: 00007fffcc3b5950
INFO: task syz-executor.3:5036 blocked for more than 148 seconds.
Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D
stack:20216 pid:5036 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
exp_funnel_lock kernel/rcu/tree_exp.h:316 [inline]
synchronize_rcu_expedited+0x77c/0x890 kernel/rcu/tree_exp.h:992
namespace_unlock+0x29b/0x4d0 fs/namespace.c:1499
do_umount fs/namespace.c:1722 [inline]
path_umount+0xe11/0xea0 fs/namespace.c:1804
ksys_umount fs/namespace.c:1827 [inline]
__do_sys_umount fs/namespace.c:1832 [inline]
__se_sys_umount fs/namespace.c:1830 [inline]
__x64_sys_umount+0x126/0x170 fs/namespace.c:1830
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f1430a8d5d7
RSP: 002b:00007ffe19a49298 EFLAGS: 00000246
ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1430a8d5d7
RDX: 00007ffe19a4936b RSI: 000000000000000a RDI: 00007ffe19a49360
RBP: 00007ffe19a49360 R08: 00000000ffffffff R09: 00007ffe19a49130
R10: 000055555600e893 R11: 0000000000000246 R12: 00007f1430ae6cdc
R13: 00007ffe19a4a420 R14: 000055555600e810 R15: 00007ffe19a4a460
INFO: task kworker/u4:5:5098 blocked for more than 150 seconds.
Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:5 state:D stack:24512 pid:5098 ppid:2 flags:0x00004000
Workqueue: events_unbound fsnotify_mark_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
__synchronize_srcu+0x340/0x3f0 kernel/rcu/srcutree.c:1360
fsnotify_mark_destroy_workfn+0x146/0x340 fs/notify/mark.c:898
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
process_scheduled_works kernel/workqueue.c:2468 [inline]
worker_thread+0xd20/0x1210 kernel/workqueue.c:2554
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/u4:15:6307 blocked for more than 150 seconds.
Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:15 state:D
stack:26008 pid:6307 ppid:2 flags:0x00004000
Workqueue: events_unbound fsnotify_connector_destroy_workfn
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2143
do_wait_for_common+0x449/0x5f0 kernel/sched/completion.c:85
__wait_for_common kernel/sched/completion.c:106 [inline]
wait_for_common kernel/sched/completion.c:117 [inline]
wait_for_completion+0x4a/0x60 kernel/sched/completion.c:138
__synchronize_srcu+0x340/0x3f0 kernel/rcu/srcutree.c:1360
fsnotify_connector_destroy_workfn+0x44/0xa0 fs/notify/mark.c:208
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
process_scheduled_works kernel/workqueue.c:2468 [inline]
worker_thread+0xd20/0x1210 kernel/workqueue.c:2554
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task kworker/u4:23:6324 blocked for more than 151 seconds.
Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u4:23 state:D
stack:25944 pid:6324 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
context_switch kernel/sched/core.c:5343 [inline]
__schedule+0x187b/0x4900 kernel/sched/core.c:6669
schedule+0xc3/0x180 kernel/sched/core.c:6745
synchronize_rcu_expedited+0x6cf/0x890 kernel/rcu/tree_exp.h:1007
synchronize_net net/core/dev.c:10789 [inline]
unregister_netdevice_many_notify+0x8de/0x1890 net/core/dev.c:10866
vti6_exit_batch_net+0x3c7/0x410 net/ipv6/ip6_vti.c:1188
ops_exit_list net/core/net_namespace.c:175 [inline]
cleanup_net+0x767/0xb80 net/core/net_namespace.c:614
process_one_work+0x8a0/0x10e0 kernel/workqueue.c:2405
worker_thread+0xa63/0x1210 kernel/workqueue.c:2552
kthread+0x2b8/0x350 kernel/kthread.c:379
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
INFO: task syz-executor.4:7375 blocked for more than 152 seconds.
Not tainted 6.4.0-rc5-syzkaller-00024-g5f63595ebd82 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D
stack:26136 pid:7375 ppid:5029 flags:0x00004004
Call Trace: