INFO: task syz.2.16793:13732 blocked for more than 122 seconds.
      Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.16793     state:D stack:0     pid:13732 tgid:13732 ppid:13366  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5929 [inline]
 __schedule+0x145b/0x1f10 kernel/sched/core.c:7755
 __schedule_loop kernel/sched/core.c:7836 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7851
 exp_funnel_lock kernel/rcu/tree_exp.h:320 [inline]
 synchronize_rcu_expedited+0x4ee/0x7b0 kernel/rcu/tree_exp.h:976
 namespace_unlock+0x1ec/0x3d0 fs/namespace.c:1704
 drop_collected_mounts fs/namespace.c:2232 [inline]
 put_mnt_ns+0xad/0xf0 fs/namespace.c:5578
 free_nsproxy+0x52/0x290 kernel/nsproxy.c:193
 put_nsproxy include/linux/nsproxy.h:118 [inline]
 switch_task_namespaces kernel/nsproxy.c:251 [inline]
 exit_task_namespaces+0x99/0xe0 kernel/nsproxy.c:256
 do_exit+0x9af/0x2630 kernel/exit.c:943
 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: 0033:0x7f58f33c11e5
RSP: 002b:00007f58f41dcf80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f58f35b5fa0 RCX: 00007f58f33c11e5
RDX: 00007f58f41dcfc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f58f3410b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f58f35b5fa0 R15: 00007ffcd3ad0f08
 </TASK>
INFO: task syz.6.16885:14008 blocked for more than 124 seconds.
      Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.16885     state:D stack:0     pid:14008 tgid:14008 ppid:12661  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5929 [inline]
 __schedule+0x145b/0x1f10 kernel/sched/core.c:7755
 __schedule_loop kernel/sched/core.c:7836 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7851
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:7908
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x836/0x1b60 kernel/locking/mutex.c:786
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1117
 mutex_lock+0x102/0x1c0 kernel/locking/mutex.c:270
 rtnl_lock+0x19/0x20 net/core/rtnetlink.c:79
 tun_detach drivers/net/tun.c:698 [inline]
 tun_chr_close+0x41/0x150 drivers/net/tun.c:3517
 __fput+0x1fe/0xa00 fs/file_table.c:431
 ____fput+0x20/0x30 fs/file_table.c:459
 task_work_run+0x1e3/0x250 kernel/task_work.c:240
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9b4/0x2630 kernel/exit.c:944
 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: 0033:0x7f8c8c9c11e5
RSP: 002b:00007f8c8d798f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f8c8cbb5fa0 RCX: 00007f8c8c9c11e5
RDX: 00007f8c8d798fc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8c8ca10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8c8cbb5fa0 R15: 00007fffcb1917d8
 </TASK>
INFO: task syz.6.16895:14037 blocked for more than 125 seconds.
      Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.16895     state:D stack:0     pid:14037 tgid:14037 ppid:12661  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5929 [inline]
 __schedule+0x145b/0x1f10 kernel/sched/core.c:7755
 __schedule_loop kernel/sched/core.c:7836 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7851
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:7908
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x836/0x1b60 kernel/locking/mutex.c:786
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1117
 mutex_lock+0x102/0x1c0 kernel/locking/mutex.c:270
 rtnl_lock+0x19/0x20 net/core/rtnetlink.c:79
 tun_detach drivers/net/tun.c:698 [inline]
 tun_chr_close+0x41/0x150 drivers/net/tun.c:3517
 __fput+0x1fe/0xa00 fs/file_table.c:431
 ____fput+0x20/0x30 fs/file_table.c:459
 task_work_run+0x1e3/0x250 kernel/task_work.c:240
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9b4/0x2630 kernel/exit.c:944
 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: 0033:0x7f8c8c9c11e5
RSP: 002b:00007f8c8d798f80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f8c8cbb5fa0 RCX: 00007f8c8c9c11e5
RDX: 00007f8c8d798fc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f8c8ca10b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8c8cbb5fa0 R15: 00007fffcb1917d8
 </TASK>
INFO: task syz.2.17205:14904 blocked for more than 126 seconds.
      Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.17205     state:D stack:0     pid:14904 tgid:14904 ppid:13366  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5929 [inline]
 __schedule+0x145b/0x1f10 kernel/sched/core.c:7755
 __schedule_loop kernel/sched/core.c:7836 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7851
 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
 __tun_detach+0x774/0x1460 drivers/net/tun.c:669
 tun_detach drivers/net/tun.c:701 [inline]
 tun_chr_close+0x93/0x150 drivers/net/tun.c:3517
 __fput+0x1fe/0xa00 fs/file_table.c:431
 ____fput+0x20/0x30 fs/file_table.c:459
 task_work_run+0x1e3/0x250 kernel/task_work.c:240
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9b4/0x2630 kernel/exit.c:944
 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: 0033:0x7f58f33c11e5
RSP: 002b:00007f58f41dcf80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f58f35b5fa0 RCX: 00007f58f33c11e5
RDX: 00007f58f41dcfc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f58f3410b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f58f35b5fa0 R15: 00007ffcd3ad0f08
 </TASK>
INFO: task syz.2.17229:14946 blocked for more than 127 seconds.
      Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.17229     state:D stack:0     pid:14946 tgid:14946 ppid:13366  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5929 [inline]
 __schedule+0x145b/0x1f10 kernel/sched/core.c:7755
 __schedule_loop kernel/sched/core.c:7836 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7851
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:7908
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x836/0x1b60 kernel/locking/mutex.c:786
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1117
 mutex_lock+0x102/0x1c0 kernel/locking/mutex.c:270
 rtnl_lock+0x19/0x20 net/core/rtnetlink.c:79
 tun_detach drivers/net/tun.c:698 [inline]
 tun_chr_close+0x41/0x150 drivers/net/tun.c:3517
 __fput+0x1fe/0xa00 fs/file_table.c:431
 ____fput+0x20/0x30 fs/file_table.c:459
 task_work_run+0x1e3/0x250 kernel/task_work.c:240
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9b4/0x2630 kernel/exit.c:944
 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: 0033:0x7f58f33c11e5
RSP: 002b:00007f58f41dcf80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f58f35b5fa0 RCX: 00007f58f33c11e5
RDX: 00007f58f41dcfc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f58f3410b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f58f35b5fa0 R15: 00007ffcd3ad0f08
 </TASK>
INFO: task syz.0.17714:16309 blocked for more than 128 seconds.
      Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.0.17714     state:D stack:0     pid:16309 tgid:16309 ppid:11611  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5929 [inline]
 __schedule+0x145b/0x1f10 kernel/sched/core.c:7755
 __schedule_loop kernel/sched/core.c:7836 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7851
 exp_funnel_lock kernel/rcu/tree_exp.h:320 [inline]
 synchronize_rcu_expedited+0x4ee/0x7b0 kernel/rcu/tree_exp.h:976
 namespace_unlock+0x1ec/0x3d0 fs/namespace.c:1704
 drop_collected_mounts fs/namespace.c:2232 [inline]
 put_mnt_ns+0xad/0xf0 fs/namespace.c:5578
 free_nsproxy+0x52/0x290 kernel/nsproxy.c:193
 put_nsproxy include/linux/nsproxy.h:118 [inline]
 switch_task_namespaces kernel/nsproxy.c:251 [inline]
 exit_task_namespaces+0x99/0xe0 kernel/nsproxy.c:256
 do_exit+0x9af/0x2630 kernel/exit.c:943
 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: 0033:0x7f1d035c11e5
RSP: 002b:00007f1d043edf80 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: fffffffffffffdfc RBX: 00007f1d037b5fa0 RCX: 00007f1d035c11e5
RDX: 00007f1d043edfc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007f1d03610b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1d037b5fa0 R15: 00007ffc75e90a88
 </TASK>
INFO: task syz.5.17986:17114 blocked for more than 131 seconds.
      Not tainted 6.12.30-syzkaller-ge2bf362ee23b #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.17986     state:D stack:0     pid:17114 tgid:17114 ppid:17055  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5929 [inline]
 __schedule+0x145b/0x1f10 kernel/sched/core.c:7755
 __schedule_loop kernel/sched/core.c:7836 [inline]
 schedule+0xc6/0x240 kernel/sched/core.c:7851
 schedule_preempt_disabled+0x14/0x30 kernel/sched/core.c:7908
 __mutex_lock_common kernel/locking/mutex.c:692 [inline]
 __mutex_lock+0x836/0x1b60 kernel/locking/mutex.c:786
 __mutex_lock_slowpath+0xe/0x20 kernel/locking/mutex.c:1117
 mutex_lock+0x102/0x1c0 kernel/locking/mutex.c:270
 rtnl_lock+0x19/0x20 net/core/rtnetlink.c:79
 tun_detach drivers/net/tun.c:698 [inline]
 tun_chr_close+0x41/0x150 drivers/net/tun.c:3517
 __fput+0x1fe/0xa00 fs/file_table.c:431
 ____fput+0x20/0x30 fs/file_table.c:459
 task_work_run+0x1e3/0x250 kernel/task_work.c:240
 exit_task_work include/linux/task_work.h:43 [inline]
 do_exit+0x9b4/0x2630 kernel/exit.c:944
 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: 0033:0x7f46c5b8e929
RSP: 002b:00007ffc6040eb18 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007f46c5db7ba0 RCX: 00007f46c5b8e929