INFO: task kworker/u8:3:52 blocked for more than 143 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:3 state:D stack:22576 pid:52 tgid:52 ppid:2 flags:0x00004000
Workqueue: netns cleanup_net
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
device_lock include/linux/device.h:1014 [inline]
devl_dev_lock net/devlink/devl_internal.h:108 [inline]
devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506
ops_pre_exit_list net/core/net_namespace.c:163 [inline]
cleanup_net+0x617/0xcc0 net/core/net_namespace.c:606
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
INFO: task kworker/u8:5:146 blocked for more than 144 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:5 state:D stack:20440 pid:146 tgid:146 ppid:2 flags:0x00004000
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4196
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
INFO: task kworker/u8:8:1151 blocked for more than 144 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:8 state:D stack:19992 pid:1151 tgid:1151 ppid:2 flags:0x00004000
Workqueue: events_unbound linkwatch_event
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
linkwatch_event+0xe/0x60 net/core/link_watch.c:276
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa65/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
INFO: task dhcpcd:5503 blocked for more than 145 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd state:D stack:20096 pid:5503 tgid:5503 ppid:5502 flags:0x00000002
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
devinet_ioctl+0x2ce/0x1aa0 net/ipv4/devinet.c:1112
inet_ioctl+0x3d7/0x4f0 net/ipv4/af_inet.c:1003
sock_do_ioctl+0x15a/0x460 net/socket.c:1227
sock_ioctl+0x626/0x8e0 net/socket.c:1346
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfb/0x170 fs/ioctl.c:893
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa76faa7d49
RSP: 002b:00007fff14f07b28 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fa76f9d96c0 RCX: 00007fa76faa7d49
RDX: 00007fff14f17d18 RSI: 0000000000008914 RDI: 0000000000000018
RBP: 00007fff14f27ed8 R08: 00007fff14f17cd8 R09: 00007fff14f17c88
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff14f17d18 R14: 0000000000000028 R15: 0000000000008914
</TASK>
INFO: task syz-executor:9907 blocked for more than 146 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:20992 pid:9907 tgid:9907 ppid:1 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2551
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f8/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:729 [inline]
__sock_sendmsg+0x223/0x270 net/socket.c:744
__sys_sendto+0x39b/0x4f0 net/socket.c:2214
__do_sys_sendto net/socket.c:2226 [inline]
__se_sys_sendto net/socket.c:2222 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2222
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f03dd9805ac
RSP: 002b:00007ffdca33db60 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f03de664620 RCX: 00007f03dd9805ac
RDX: 0000000000000028 RSI: 00007f03de664670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffdca33dbb4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f03de664670 R15: 0000000000000000
</TASK>
INFO: task syz-executor:9974 blocked for more than 146 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21728 pid:9974 tgid:9974 ppid:1 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2551
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f8/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:729 [inline]
__sock_sendmsg+0x223/0x270 net/socket.c:744
__sys_sendto+0x39b/0x4f0 net/socket.c:2214
__do_sys_sendto net/socket.c:2226 [inline]
__se_sys_sendto net/socket.c:2222 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2222
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f13ced805ac
RSP: 002b:00007fff8514fdc0 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f13cfa64620 RCX: 00007f13ced805ac
RDX: 000000000000002c RSI: 00007f13cfa64670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007fff8514fe14 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f13cfa64670 R15: 0000000000000000
</TASK>
INFO: task syz-executor:9987 blocked for more than 147 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21136 pid:9987 tgid:9987 ppid:1 flags:0x00004006
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_timeout+0xb0/0x310 kernel/time/timer.c:2591
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common kernel/sched/completion.c:116 [inline]
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion+0x355/0x620 kernel/sched/completion.c:148
__flush_work+0xa37/0xc50 kernel/workqueue.c:4217
flush_all_backlogs net/core/dev.c:6045 [inline]
unregister_netdevice_many_notify+0x87b/0x1da0 net/core/dev.c:11388
unregister_netdevice_many net/core/dev.c:11469 [inline]
unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11343
unregister_netdevice include/linux/netdevice.h:3118 [inline]
nsim_destroy+0x180/0x5c0 drivers/net/netdevsim/netdev.c:778
__nsim_dev_port_del+0x14b/0x1b0 drivers/net/netdevsim/dev.c:1428
nsim_dev_port_del_all drivers/net/netdevsim/dev.c:1440 [inline]
nsim_dev_reload_destroy+0x28a/0x490 drivers/net/netdevsim/dev.c:1661
nsim_drv_remove+0x58/0x160 drivers/net/netdevsim/dev.c:1676
device_remove drivers/base/dd.c:567 [inline]
__device_release_driver drivers/base/dd.c:1273 [inline]
device_release_driver_internal+0x4ab/0x7c0 drivers/base/dd.c:1296
bus_remove_device+0x34f/0x420 drivers/base/bus.c:576
device_del+0x57a/0x9b0 drivers/base/core.c:3861
device_unregister+0x20/0xc0 drivers/base/core.c:3902
nsim_bus_dev_del drivers/net/netdevsim/bus.c:462 [inline]
del_device_store+0x363/0x480 drivers/net/netdevsim/bus.c:226
kernfs_fop_write_iter+0x3a2/0x500 fs/kernfs/file.c:334
new_sync_write fs/read_write.c:590 [inline]
vfs_write+0xaed/0xd30 fs/read_write.c:683
ksys_write+0x183/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc7ba17d1ff
RSP: 002b:00007ffda210fd40 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007fc7ba17d1ff
RDX: 0000000000000001 RSI: 00007ffda210fd90 RDI: 0000000000000005
RBP: 00007fc7ba1f24b6 R08: 0000000000000000 R09: 00007ffda210fb97
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007ffda210fd90 R14: 00007fc7bae64620 R15: 0000000000000003
</TASK>
INFO: task syz-executor:9996 blocked for more than 148 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21728 pid:9996 tgid:9996 ppid:1 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
kernfs_fop_write_iter+0x3a2/0x500 fs/kernfs/file.c:334
new_sync_write fs/read_write.c:590 [inline]
vfs_write+0xaed/0xd30 fs/read_write.c:683
ksys_write+0x183/0x2b0 fs/read_write.c:736
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7a3dd7d1ff
RSP: 002b:00007ffc4f2e0530 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007f7a3dd7d1ff
RDX: 0000000000000001 RSI: 00007ffc4f2e0580 RDI: 0000000000000005
RBP: 00007f7a3ddf24b6 R08: 0000000000000000 R09: 00007ffc4f2e0387
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000001
R13: 00007ffc4f2e0580 R14: 00007f7a3ea64620 R15: 0000000000000003
</TASK>
INFO: task syz-executor:10214 blocked for more than 149 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21728 pid:10214 tgid:10214 ppid:1 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2551
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f8/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:729 [inline]
__sock_sendmsg+0x223/0x270 net/socket.c:744
__sys_sendto+0x39b/0x4f0 net/socket.c:2214
__do_sys_sendto net/socket.c:2226 [inline]
__se_sys_sendto net/socket.c:2222 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2222
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f08ae3805ac
RSP: 002b:00007ffd12d0b570 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007f08af064620 RCX: 00007f08ae3805ac
RDX: 0000000000000038 RSI: 00007f08af064670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffd12d0b5c4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007f08af064670 R15: 0000000000000000
</TASK>
INFO: task syz-executor:10264 blocked for more than 150 seconds.
Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:25920 pid:10264 tgid:10264 ppid:1 flags:0x00000004
Call Trace:
<TASK>
context_switch kernel/sched/core.c:5328 [inline]
__schedule+0x184f/0x4c30 kernel/sched/core.c:6690
__schedule_loop kernel/sched/core.c:6767 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6782
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6839
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a7/0xd70 kernel/locking/mutex.c:752
rtnl_lock net/core/rtnetlink.c:79 [inline]
rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
netlink_rcv_skb+0x1e5/0x430 net/netlink/af_netlink.c:2551
netlink_unicast_kernel net/netlink/af_netlink.c:1331 [inline]
netlink_unicast+0x7f8/0x990 net/netlink/af_netlink.c:1357
netlink_sendmsg+0x8e4/0xcb0 net/netlink/af_netlink.c:1901
sock_sendmsg_nosec net/socket.c:729 [inline]
__sock_sendmsg+0x223/0x270 net/socket.c:744
__sys_sendto+0x39b/0x4f0 net/socket.c:2214
__do_sys_sendto net/socket.c:2226 [inline]
__se_sys_sendto net/socket.c:2222 [inline]
__x64_sys_sendto+0xde/0x100 net/socket.c:2222
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc001d805ac
RSP: 002b:00007ffe1e329d50 EFLAGS: 00000293 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007fc002a64620 RCX: 00007fc001d805ac
RDX: 0000000000000028 RSI: 00007fc002a64670 RDI: 0000000000000003
RBP: 0000000000000000 R08: 00007ffe1e329da4 R09: 000000000000000c
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003
R13: 0000000000000000 R14: 00007fc002a64670 R15: 0000000000000000
</TASK>
Future hung task reports are suppressed, see sysctl kernel.hung_task_warnings
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6720
3 locks held by kworker/1:1/46:
#0: ffff88801ac79948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac79948 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90000b67d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000b67d00 ((reg_check_chans).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x99/0xfd0 net/wireless/reg.c:2480
4 locks held by kworker/u8:3/52:
#0: ffff88801bae5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801bae5948 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90000bd7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90000bd7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcc6e10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:580
#3: ffff88801b36a0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#3: ffff88801b36a0e8 (&dev->mutex){....}-{3:3}, at: devl_dev_lock net/devlink/devl_internal.h:108 [inline]
#3: ffff88801b36a0e8 (&dev->mutex){....}-{3:3}, at: devlink_pernet_pre_exit+0x13b/0x440 net/devlink/core.c:506
3 locks held by kworker/u8:5/146:
#0: ffff88814d7e5148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88814d7e5148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90002d0fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90002d0fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4196
3 locks held by kworker/u8:8/1151:
#0: ffff88801ac81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac81148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc90003f57d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc90003f57d00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
1 lock held by dhcpcd/5503:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1aa0 net/ipv4/devinet.c:1112
2 locks held by getty/5590:
#0: ffff88803108d0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
1 lock held by syz-executor/5832:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517
2 locks held by kworker/0:3/5839:
3 locks held by kworker/0:4/5896:
3 locks held by kworker/0:5/5897:
#0: ffff88801ac78948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3204 [inline]
#0: ffff88801ac78948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x93b/0x1850 kernel/workqueue.c:3310
#1: ffffc900024dfd00 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3205 [inline]
#1: ffffc900024dfd00 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x976/0x1850 kernel/workqueue.c:3310
#2: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
4 locks held by kworker/0:7/5903:
3 locks held by kworker/u8:9/8627:
1 lock held by syz.6.1586/9704:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517
1 lock held by syz.7.1636/9833:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517
1 lock held by syz-executor/9907:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/9974:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
8 locks held by syz-executor/9987:
#0: ffff888034fd0420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline]
#0: ffff888034fd0420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x225/0xd30 fs/read_write.c:679
#1: ffff8880437cf488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325
#2: ffff88814436af08 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326
#3: ffffffff8f571768 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
#4: ffff88801b36a0e8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1014 [inline]
#4: ffff88801b36a0e8 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1095 [inline]
#4: ffff88801b36a0e8 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0xce/0x7c0 drivers/base/dd.c:1293
#5: ffff88801b36b250 (&devlink->lock_key#6){+.+.}-{3:3}, at: nsim_drv_remove+0x50/0x160 drivers/net/netdevsim/dev.c:1675
#6: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: nsim_destroy+0x71/0x5c0 drivers/net/netdevsim/netdev.c:773
#7: ffffffff8e7d1d90 (cpu_hotplug_lock){++++}-{0:0}, at: flush_all_backlogs net/core/dev.c:6029 [inline]
#7: ffffffff8e7d1d90 (cpu_hotplug_lock){++++}-{0:0}, at: unregister_netdevice_many_notify+0x5ea/0x1da0 net/core/dev.c:11388
4 locks held by syz-executor/9996:
#0: ffff888034fd0420 (sb_writers#8){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2931 [inline]
#0: ffff888034fd0420 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x225/0xd30 fs/read_write.c:679
#1: ffff88803dda8888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_write_iter+0x1ea/0x500 fs/kernfs/file.c:325
#2: ffff88814436af08 (kn->active#49){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x20e/0x500 fs/kernfs/file.c:326
#3: ffffffff8f571768 (nsim_bus_dev_list_lock){+.+.}-{3:3}, at: del_device_store+0xfc/0x480 drivers/net/netdevsim/bus.c:216
1 lock held by syz.9.1718/10100:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: tun_detach drivers/net/tun.c:698 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: tun_chr_close+0x3b/0x1b0 drivers/net/tun.c:3517
1 lock held by syz-executor/10214:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10264:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10267:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10272:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10275:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10278:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10291:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10295:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10300:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10303:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10307:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10311:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10319:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10323:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10327:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10333:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10336:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
1 lock held by syz-executor/10344:
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcd3948 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6672
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc6-syzkaller-00169-g906bd684e4b1 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113