------------[ cut here ]------------
WARNING: CPU: 1 PID: 5656 at fs/namespace.c:1258 cleanup_mnt+0x397/0x450 fs/namespace.c:1258
Modules linked in:
CPU: 1 PID: 5656 Comm: syz-executor.1 Not tainted 6.10.0-rc3-syzkaller-00044-g2ccbdf43d5e7 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:cleanup_mnt+0x397/0x450 fs/namespace.c:1258
Code: 03 38 d0 7c 08 84 d2 0f 85 b1 00 00 00 c7 83 3c 01 00 00 00 00 00 00 48 89 df e8 f4 ee ff ff e9 34 fe ff ff e8 5a 4d 89 ff 90 <0f> 0b 90 e9 8e fc ff ff e8 4c 4d 89 ff 4c 89 ef e8 34 0c 07 00 e9
RSP: 0018:ffffc90003da7d20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000019 RCX: ffffffff82053f05
RDX: ffff88801d0c0000 RSI: ffffffff82054276 RDI: 0000000000000005
RBP: ffff8880636cf000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000019 R11: 0000000000000000 R12: ffff88801d0c0968
R13: ffff88801f85ae00 R14: ffffed1003a1812d R15: ffff88801f85ae40
FS:  0000000000000000(0000) GS:ffff88802c100000(0000) knlGS:0000000000000000
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 000000002ce3d000 CR3: 000000005fcfe000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 task_work_run+0x14e/0x250 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa9b/0x2ba0 kernel/exit.c:874
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1023
 __do_sys_exit_group kernel/exit.c:1034 [inline]
 __se_sys_exit_group kernel/exit.c:1032 [inline]
 __ia32_sys_exit_group+0x3e/0x50 kernel/exit.c:1032
 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline]
 __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386
 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411
 entry_SYSENTER_compat_after_hwframe+0x84/0x8e
RIP: 0023:0xf726f579
Code: Unable to access opcode bytes at 0xf726f54f.
RSP: 002b:00000000ffdefa5c EFLAGS: 00000286 ORIG_RAX: 00000000000000fc
RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00000000f7316361
RDX: 00000000f729b997 RSI: 0000000000000000 RDI: 00000000f7316159
RBP: 00000000ffdefab8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>