INFO: task kworker/u8:6:819 blocked for more than 122 seconds.
      Not tainted 6.12.30-syzkaller-gf6ca783ba264 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/u8:6    state:D stack:0     pid:819   tgid:819   ppid:2      flags:0x00004000
Workqueue: events_unbound linkwatch_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5947 [inline]
 __schedule+0x132b/0x1e00 kernel/sched/core.c:7775
 __schedule_loop kernel/sched/core.c:7856 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7871
 exp_funnel_lock kernel/rcu/tree_exp.h:320 [inline]
 synchronize_rcu_expedited+0x4ee/0x7b0 kernel/rcu/tree_exp.h:976
 synchronize_net+0x2c/0x40 net/core/dev.c:11364
 dev_deactivate_many+0x6dd/0xbe0 net/sched/sch_generic.c:1377
 dev_deactivate+0x119/0x1b0 net/sched/sch_generic.c:1403
 linkwatch_do_dev+0x117/0x170 net/core/link_watch.c:184
 __linkwatch_run_queue+0x40c/0x660 net/core/link_watch.c:243
 linkwatch_event+0x50/0x60 net/core/link_watch.c:286
 process_one_work kernel/workqueue.c:3238 [inline]
 process_scheduled_works+0x7d5/0x1020 kernel/workqueue.c:3319
 worker_thread+0xc58/0x1250 kernel/workqueue.c:3400
 kthread+0x2c7/0x370 kernel/kthread.c:389
 ret_from_fork+0x64/0xa0 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
INFO: task syz-executor:6079 blocked for more than 123 seconds.
      Not tainted 6.12.30-syzkaller-gf6ca783ba264 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:0     pid:6079  tgid:6079  ppid:1      flags:0x00000004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5947 [inline]
 __schedule+0x132b/0x1e00 kernel/sched/core.c:7775
 __schedule_loop kernel/sched/core.c:7856 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7871
 synchronize_rcu_expedited+0x6b0/0x7b0 kernel/rcu/tree_exp.h:991
 namespace_unlock+0x1ec/0x3d0 fs/namespace.c:1704
 do_umount fs/namespace.c:1931 [inline]
 path_umount+0xeb4/0xf40 fs/namespace.c:2014
 ksys_umount fs/namespace.c:2037 [inline]
 __do_sys_umount fs/namespace.c:2042 [inline]
 __se_sys_umount fs/namespace.c:2040 [inline]
 __x64_sys_umount+0x126/0x170 fs/namespace.c:2040
 x64_sys_call+0x2ab8/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:167
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f7b3758fc57
RSP: 002b:00007fff94ba9a68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: ffffffffffffffda RBX: 00007f7b37610925 RCX: 00007f7b3758fc57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff94ba9b20
RBP: 00007fff94ba9b20 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff94baabb0
R13: 00007f7b37610925 R14: 0000000000034f6c R15: 00007fff94baabf0
 </TASK>
INFO: task syz.4.2861:8808 blocked for more than 125 seconds.
      Not tainted 6.12.30-syzkaller-gf6ca783ba264 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.2861      state:D stack:0     pid:8808  tgid:8807  ppid:5843   flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5947 [inline]
 __schedule+0x132b/0x1e00 kernel/sched/core.c:7775
 __schedule_loop kernel/sched/core.c:7856 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7871
 schedule_timeout+0xb2/0x3a0 kernel/time/timer.c:2595
 do_wait_for_common kernel/sched/completion.c:95 [inline]
 __wait_for_common kernel/sched/completion.c:116 [inline]
 wait_for_common+0x359/0x630 kernel/sched/completion.c:127
 wait_for_completion+0x1c/0x40 kernel/sched/completion.c:148
 exit_aio+0x2df/0x3b0 fs/aio.c:927
 __mmput+0x30/0x320 kernel/fork.c:1345
 mmput+0x55/0x170 kernel/fork.c:1371
 exit_mm kernel/exit.c:574 [inline]
 do_exit+0x910/0x2630 kernel/exit.c:931
 do_group_exit+0x22a/0x300 kernel/exit.c:1094
 get_signal+0x139d/0x14f0 kernel/signal.c:2934
 arch_do_signal_or_restart+0x96/0x720 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x58/0xb0 kernel/entry/common.c:218
 do_syscall_64+0x64/0xf0 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f0fe1b8e929
RSP: 002b:00007f0fe2aa8038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: 000000000000002c RBX: 00007f0fe1db5fa0 RCX: 00007f0fe1b8e929
RDX: 0000000000000000 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007f0fe1c10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f0fe1db5fa0 R15: 00007ffee3f79638
 </TASK>
INFO: task syz.1.2862:8809 blocked for more than 125 seconds.
      Not tainted 6.12.30-syzkaller-gf6ca783ba264 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.