syzbot

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kernel BUG at fs/namei.c:2954!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 289 Comm: syz-executor373 Not tainted 6.1.145-syzkaller-00002-gc750dc582629 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:may_delete+0x701/0x710 fs/namei.c:2954
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 d0 14 f4 ff e9 77 fe ff ff e8 a6 b1 af ff 0f 0b e8 9f b1 af ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 56 53
RSP: 0018:ffffc90000e47b20 EFLAGS: 00010293
RAX: ffffffff81c050e1 RBX: ffff8881172b3880 RCX: ffff88810dbfa880
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000e47b88 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520001c8f44 R11: 1ffff920001c8f44 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff8881172bacf0 R15: 1ffff11022e56710
FS:  00005555660db380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555660fc7b8 CR3: 000000010956f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vfs_rmdir+0x32/0x500 fs/namei.c:4170
 incfs_kill_sb+0x105/0x220 fs/incfs/vfs.c:1995
 deactivate_locked_super+0xb5/0x120 fs/super.c:334
 deactivate_super+0xaf/0xe0 fs/super.c:365
 cleanup_mnt+0x45f/0x4e0 fs/namespace.c:1182
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1189
 task_work_run+0x1db/0x240 kernel/task_work.c:203
 ptrace_notify+0x221/0x250 kernel/signal.c:2377
 ptrace_report_syscall include/linux/ptrace.h:424 [inline]
 ptrace_report_syscall_exit include/linux/ptrace.h:486 [inline]
 syscall_exit_work+0x84/0x140 kernel/entry/common.c:258
 syscall_exit_to_user_mode_prepare+0x1c/0x20 kernel/entry/common.c:285
 __syscall_exit_to_user_mode_work kernel/entry/common.c:290 [inline]
 syscall_exit_to_user_mode+0xd/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:87
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f23988f94c7
Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffc9ee29f18 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f23988f94c7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc9ee29fd0
RBP: 00007ffc9ee29fd0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffc9ee2b0c0
R13: 00005555660e4700 R14: 0000000000000001 R15: 431bde82d7b634db
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:may_delete+0x701/0x710 fs/namei.c:2954
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 d0 14 f4 ff e9 77 fe ff ff e8 a6 b1 af ff 0f 0b e8 9f b1 af ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 56 53
RSP: 0018:ffffc90000e47b20 EFLAGS: 00010293
RAX: ffffffff81c050e1 RBX: ffff8881172b3880 RCX: ffff88810dbfa880
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000e47b88 R08: 0000000000000004 R09: 0000000000000003
R10: fffff520001c8f44 R11: 1ffff920001c8f44 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff8881172bacf0 R15: 1ffff11022e56710
FS:  00005555660db380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555660fc7b8 CR3: 000000010956f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400