INFO: task syz-executor.1:10290 blocked for more than 145 seconds.
      Not tainted 5.15.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1  state:D stack:26192 pid:10290 ppid:  6484 flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:4969 [inline]
 __schedule+0xb72/0x1460 kernel/sched/core.c:6250
 schedule+0x12b/0x1f0 kernel/sched/core.c:6323
 exp_funnel_lock kernel/rcu/tree_exp.h:313 [inline]
 synchronize_rcu_expedited+0x675/0x740 kernel/rcu/tree_exp.h:836
 namespace_unlock+0x297/0x4f0 fs/namespace.c:1448
 drop_collected_mounts fs/namespace.c:1935 [inline]
 put_mnt_ns+0xe2/0x270 fs/namespace.c:4344
 free_nsproxy+0x4b/0x3e0 kernel/nsproxy.c:191
 do_exit+0x6f8/0x24e0 kernel/exit.c:825
 do_group_exit+0x168/0x2d0 kernel/exit.c:923
 get_signal+0x16b0/0x2090 kernel/signal.c:2855
 arch_do_signal_or_restart+0x9c/0x730 arch/x86/kernel/signal.c:868
 handle_signal_work kernel/entry/common.c:148 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
 exit_to_user_mode_prepare+0x191/0x220 kernel/entry/common.c:207
 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
 syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
 do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fb620f73ae9
RSP: 002b:00007fb61e4e9218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007fb621086f68 RCX: 00007fb620f73ae9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fb621086f68
RBP: 00007fb621086f60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb621086f6c
R13: 00007fff68f9355f R14: 00007fb61e4e9300 R15: 0000000000022000
 </TASK>