------------[ cut here ]------------
WARNING: CPU: 1 PID: 6490 at fs/namespace.c:1422 cleanup_mnt+0x37c/0x3ac fs/namespace.c:1422
Modules linked in:
CPU: 1 UID: 0 PID: 6490 Comm: syz-executor Not tainted 6.15.0-rc7-syzkaller-gd7fa1af5b33e #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : cleanup_mnt+0x37c/0x3ac fs/namespace.c:1422
lr : cleanup_mnt+0x37c/0x3ac fs/namespace.c:1422
sp : ffff8000a2437a90
x29: ffff8000a2437aa0 x28: 00007dfeb25faef4 x27: ffff80008f321e88
x26: ffffffffffffffff x25: dfff800000000000 x24: 1fffe0001b009ae3
x23: 0000000000000003 x22: 0000000000000000 x21: ffff0000d804d718
x20: 0000000000000003 x19: ffff0000d804d6c0 x18: 0000000000000000
x17: ffff800092f39000 x16: ffff80008051c10c x15: 0000000000000001
x14: 00000000ffff8000 x13: 000000008030ec1d x12: ffff800080021d9c
x11: ffff800080021d9c x10: 0000000000ff0100 x9 : 0000000000000000
x8 : ffff0000dd029e80 x7 : 0000000000000000 x6 : 000000000000003f
x5 : 0000000000000040 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000000 x1 : 0000000000000003 x0 : 0000000000000000
Call trace:
 cleanup_mnt+0x37c/0x3ac fs/namespace.c:1422 (P)
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1438
 task_work_run+0x1dc/0x260 kernel/task_work.c:227
 exit_task_work include/linux/task_work.h:40 [inline]
 do_exit+0x4e8/0x1998 kernel/exit.c:953
 do_group_exit+0x194/0x22c kernel/exit.c:1102
 __do_sys_exit_group kernel/exit.c:1113 [inline]
 __se_sys_exit_group kernel/exit.c:1111 [inline]
 pid_child_should_wake+0x0/0x1dc kernel/exit.c:1111
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
irq event stamp: 956894
hardirqs last  enabled at (956893): [<ffff8000805a9be0>] __call_rcu_common kernel/rcu/tree.c:3107 [inline]
hardirqs last  enabled at (956893): [<ffff8000805a9be0>] call_rcu+0x650/0x96c kernel/rcu/tree.c:3202
hardirqs last disabled at (956894): [<ffff80008adb9eb8>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:511
softirqs last  enabled at (955708): [<ffff8000803cf71c>] softirq_handle_end kernel/softirq.c:425 [inline]
softirqs last  enabled at (955708): [<ffff8000803cf71c>] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607
softirqs last disabled at (955697): [<ffff800080020efc>] __do_softirq+0x14/0x20 kernel/softirq.c:613
---[ end trace 0000000000000000 ]---