INFO: task kworker/0:0:8 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:0     state:D stack:22384 pid:8     tgid:8     ppid:2      flags:0x00004000
Workqueue: events linkwatch_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 linkwatch_event+0xe/0x60 net/core/link_watch.c:281
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
INFO: task kworker/0:1:9 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:1     state:D stack:20912 pid:9     tgid:9     ppid:2      flags:0x00004000
Workqueue: events switchdev_deferred_process_work
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
INFO: task dhcpcd:4733 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:dhcpcd          state:D stack:20944 pid:4733  tgid:4733  ppid:4732   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1091
 inet_ioctl+0x3d7/0x4f0 net/ipv4/af_inet.c:1000
 sock_do_ioctl+0x158/0x460 net/socket.c:1222
 sock_ioctl+0x629/0x8e0 net/socket.c:1341
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:871 [inline]
 __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:857
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f5d6ae48d49
RSP: 002b:00007ffe36054ee8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f5d6ad7a6c0 RCX: 00007f5d6ae48d49
RDX: 00007ffe360650d8 RSI: 0000000000008914 RDI: 000000000000000c
RBP: 00007ffe36075298 R08: 00007ffe36065098 R09: 00007ffe36065048
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe360650d8 R14: 0000000000000028 R15: 0000000000008914
 </TASK>
INFO: task syz-executor.2:9414 blocked for more than 143 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:23664 pid:9414  tgid:9409  ppid:5105   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 netdev_wait_allrefs_any net/core/dev.c:10443 [inline]
 netdev_run_todo+0x75c/0xf40 net/core/dev.c:10561
 tun_detach drivers/net/tun.c:704 [inline]
 tun_chr_close+0x13a/0x1b0 drivers/net/tun.c:3506
 __fput+0x429/0x8a0 fs/file_table.c:376
 task_work_run+0x24e/0x310 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa2c/0x2740 kernel/exit.c:871
 do_group_exit+0x206/0x2c0 kernel/exit.c:1020
 get_signal+0x176d/0x1850 kernel/signal.c:2893
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:105 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:201 [inline]
 syscall_exit_to_user_mode+0xc8/0x360 kernel/entry/common.c:212
 do_syscall_64+0x108/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f983207dda9
RSP: 002b:00007f9832e340c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 0000000000000034 RBX: 00007f98321ac050 RCX: 00007f983207dda9
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000005
RBP: 00007f98320ca47a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f98321ac050 R15: 00007f98322cfa48
 </TASK>
INFO: task syz-executor.1:9469 blocked for more than 144 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:26968 pid:9469  tgid:9469  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
 ops_init+0x352/0x610 net/core/net_namespace.c:136
 setup_net+0x4d1/0xbc0 net/core/net_namespace.c:339
 copy_net_ns+0x4e3/0x7b0 net/core/net_namespace.c:495
 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0x122/0x180 kernel/nsproxy.c:228
 ksys_unshare+0x616/0xc00 kernel/fork.c:3428
 __do_sys_unshare kernel/fork.c:3499 [inline]
 __se_sys_unshare kernel/fork.c:3497 [inline]
 __x64_sys_unshare+0x38/0x40 kernel/fork.c:3497
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fcc6ec7f507
RSP: 002b:00007fcc6eecff88 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fcc6ecca5f7 RCX: 00007fcc6ec7f507
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 0000000000000000 R08: 00007fcc6f8db660 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffdf31ee208
R13: 0000000000000003 R14: 00007fcc6edac9d8 R15: 000000000000000c
 </TASK>
INFO: task syz-executor.4:9477 blocked for more than 144 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4  state:D stack:26968 pid:9477  tgid:9477  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
 ops_init+0x352/0x610 net/core/net_namespace.c:136
 setup_net+0x4d1/0xbc0 net/core/net_namespace.c:339
 copy_net_ns+0x4e3/0x7b0 net/core/net_namespace.c:495
 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0x122/0x180 kernel/nsproxy.c:228
 ksys_unshare+0x616/0xc00 kernel/fork.c:3428
 __do_sys_unshare kernel/fork.c:3499 [inline]
 __se_sys_unshare kernel/fork.c:3497 [inline]
 __x64_sys_unshare+0x38/0x40 kernel/fork.c:3497
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f96f3a7f507
RSP: 002b:00007f96f3ccff88 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f96f3aca5f7 RCX: 00007f96f3a7f507
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 0000000000000000 R08: 00007f96f46db660 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffdd46c3478
R13: 0000000000000003 R14: 00007f96f3bac9d8 R15: 000000000000000c
 </TASK>
INFO: task syz-executor.0:9478 blocked for more than 144 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0  state:D stack:26968 pid:9478  tgid:9478  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
 ops_init+0x352/0x610 net/core/net_namespace.c:136
 setup_net+0x4d1/0xbc0 net/core/net_namespace.c:339
 copy_net_ns+0x4e3/0x7b0 net/core/net_namespace.c:495
 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0x122/0x180 kernel/nsproxy.c:228
 ksys_unshare+0x616/0xc00 kernel/fork.c:3428
 __do_sys_unshare kernel/fork.c:3499 [inline]
 __se_sys_unshare kernel/fork.c:3497 [inline]
 __x64_sys_unshare+0x38/0x40 kernel/fork.c:3497
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7f142ee7f507
RSP: 002b:00007f142f0cff88 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007f142eeca5f7 RCX: 00007f142ee7f507
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 0000000000000000 R08: 00007f142fadb660 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc82361048
R13: 0000000000000003 R14: 00007f142efac9d8 R15: 000000000000000c
 </TASK>
INFO: task syz-executor.3:9479 blocked for more than 145 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3  state:D stack:26224 pid:9479  tgid:9479  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
 ops_init+0x352/0x610 net/core/net_namespace.c:136
 setup_net+0x4d1/0xbc0 net/core/net_namespace.c:339
 copy_net_ns+0x4e3/0x7b0 net/core/net_namespace.c:495
 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0x122/0x180 kernel/nsproxy.c:228
 ksys_unshare+0x616/0xc00 kernel/fork.c:3428
 __do_sys_unshare kernel/fork.c:3499 [inline]
 __se_sys_unshare kernel/fork.c:3497 [inline]
 __x64_sys_unshare+0x38/0x40 kernel/fork.c:3497
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fe07427f507
RSP: 002b:00007fe0744cff88 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fe0742ca5f7 RCX: 00007fe07427f507
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 0000000000000000 R08: 00007fe074edb660 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007ffc202b0998
R13: 0000000000000003 R14: 00007fe0743ac9d8 R15: 000000000000000c
 </TASK>
INFO: task syz-executor.2:9481 blocked for more than 145 seconds.
      Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2  state:D stack:26384 pid:9481  tgid:9481  ppid:1      flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0x17d1/0x49f0 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6817
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6874
 __mutex_lock_common kernel/locking/mutex.c:684 [inline]
 __mutex_lock+0x6a3/0xd70 kernel/locking/mutex.c:752
 smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
 ops_init+0x352/0x610 net/core/net_namespace.c:136
 setup_net+0x4d1/0xbc0 net/core/net_namespace.c:339
 copy_net_ns+0x4e3/0x7b0 net/core/net_namespace.c:495
 create_new_namespaces+0x425/0x7b0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0x122/0x180 kernel/nsproxy.c:228
 ksys_unshare+0x616/0xc00 kernel/fork.c:3428
 __do_sys_unshare kernel/fork.c:3499 [inline]
 __se_sys_unshare kernel/fork.c:3497 [inline]
 __x64_sys_unshare+0x38/0x40 kernel/fork.c:3497
 do_syscall_64+0xf9/0x240
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fd4fd47f507
RSP: 002b:00007fd4fd6cff88 EFLAGS: 00000202 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fd4fd4ca5f7 RCX: 00007fd4fd47f507
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000000
RBP: 0000000000000000 R08: 00007fd4fe0db660 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 00007fff09c41828
R13: 0000000000000003 R14: 00007fd4fd5ac9d8 R15: 000000000000000c
 </TASK>

Showing all locks held in the system:
3 locks held by kworker/0:0/8:
 #0: ffff888014c78938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888014c78938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc900000d7d20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc900000d7d20 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:281
3 locks held by kworker/0:1/9:
 #0: ffff888014c78938 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888014c78938 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc900000e7d20 (deferred_process_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc900000e7d20 (deferred_process_work){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: switchdev_deferred_process_work+0xe/0x20 net/switchdev/switchdev.c:104
1 lock held by khungtaskd/29:
 #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
 #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
 #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
1 lock held by dhcpcd/4733:
 #0: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1091
2 locks held by getty/4819:
 #0: ffff88802aa950a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc90002efe2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 drivers/tty/n_tty.c:2201
5 locks held by kworker/u4:9/13007:
 #0: ffff888015ea4938 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888015ea4938 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc900031e7d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc900031e7d20 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf5/0xb90 net/core/net_namespace.c:580
 #3: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe8/0x9d0 net/core/dev.c:11605
 #4: ffffffff8e136440 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x4c/0x550 kernel/rcu/tree.c:4064
3 locks held by kworker/1:8/25915:
 #0: ffff888029e82d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888029e82d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc90013237d20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc90013237d20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4686
3 locks held by kworker/0:12/7073:
 #0: ffff888029e82d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #0: ffff888029e82d38 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #1: ffffc900055c7d20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:2608 [inline]
 #1: ffffc900055c7d20 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 kernel/workqueue.c:2706
 #2: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x19/0x30 net/ipv6/addrconf.c:4686
1 lock held by syz-executor.2/9414:
 #0: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: netdev_wait_allrefs_any net/core/dev.c:10443 [inline]
 #0: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: netdev_run_todo+0x75c/0xf40 net/core/dev.c:10561
2 locks held by syz-executor.1/9469:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.4/9477:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.0/9478:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.3/9479:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.2/9481:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.1/9485:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.0/9492:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.3/9494:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.4/9496:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.2/9498:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.1/9508:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.4/9511:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.0/9514:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.3/9516:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.2/9519:
 #0: ffffffff8f369810 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
 #1: ffffffff8f375d88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878

=============================================

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e7/0x2e0 lib/dump_stack.c:106
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
 watchdog+0xfaf/0xff0 kernel/hung_task.c:379
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 59 Comm: kworker/u4:4 Not tainted 6.8.0-rc7-syzkaller-00051-g67be068d31d4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Workqueue: bat_events batadv_nc_worker
RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:87 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/generic.c:104 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:129 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/generic.c:161 [inline]
RIP: 0010:check_region_inline mm/kasan/generic.c:180 [inline]
RIP: 0010:kasan_check_range+0x86/0x290 mm/kasan/generic.c:189
Code: 00 fc ff df 4f 8d 3c 31 4c 89 fd 4c 29 dd 48 83 fd 10 7f 29 48 85 ed 0f 84 3e 01 00 00 4c 89 cd 48 f7 d5 48 01 dd 41 80 3b 00 <0f> 85 c9 01 00 00 49 ff c3 48 ff c5 75 ee e9 1e 01 00 00 45 89 dc
RSP: 0018:ffffc900015b7860 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffffffff2591a9f RCX: ffffffff817122ba
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff92c8d4f8
RBP: ffffffffffffffff R08: ffffffff92c8d4ff R09: 1ffffffff2591a9f
R10: dffffc0000000000 R11: fffffbfff2591a9f R12: 0000000000000000
R13: 00000000000006c8 R14: dffffc0000000001 R15: fffffbfff2591aa0
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c015575000 CR3: 000000000df32000 CR4: 00000000003506f0
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 hlock_class kernel/locking/lockdep.c:228 [inline]
 check_wait_context kernel/locking/lockdep.c:4773 [inline]
 __lock_acquire+0x4ba/0x1fd0 kernel/locking/lockdep.c:5087
 lock_acquire+0x1e3/0x530 kernel/locking/lockdep.c:5754
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x35/0x50 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 batadv_nc_purge_paths+0xe8/0x3b0 net/batman-adv/network-coding.c:442
 batadv_nc_worker+0x365/0x610 net/batman-adv/network-coding.c:722
 process_one_work kernel/workqueue.c:2633 [inline]
 process_scheduled_works+0x913/0x1420 kernel/workqueue.c:2706
 worker_thread+0xa5f/0x1000 kernel/workqueue.c:2787
 kthread+0x2ef/0x390 kernel/kthread.c:388
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1b/0x30 arch/x86/entry/entry_64.S:243
 </TASK>