syzbot

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kernel BUG at fs/namei.c:2933!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 288 Comm: syz-executor147 Not tainted 5.15.189-syzkaller-android13-5.15.189_r00 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:may_delete+0x701/0x710 fs/namei.c:2933
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 f0 51 f5 ff e9 77 fe ff ff e8 26 d7 b6 ff 0f 0b e8 1f d7 b6 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:ffffc90000a07b90 EFLAGS: 00010293
RAX: ffffffff81b1d8b1 RBX: ffff888100416bb0 RCX: ffff88811b3abb40
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000a07bf8 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000140f54 R11: 1ffff92000140f54 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888120e569c0 R15: 1ffff11020082d76
FS:  00005555832d9380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558e6ea8e748 CR3: 00000001245eb000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 vfs_rmdir+0x32/0x460 fs/namei.c:4130
 incfs_kill_sb+0x105/0x220 fs/incfs/vfs.c:1989
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x446/0x500 fs/namespace.c:1139
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1146
 task_work_run+0x127/0x190 kernel/task_work.c:188
 ptrace_notify+0x212/0x250 kernel/signal.c:2391
 ptrace_report_syscall include/linux/tracehook.h:66 [inline]
 tracehook_report_syscall_exit include/linux/tracehook.h:130 [inline]
 arch_syscall_exit_tracehook include/linux/entry-common.h:297 [inline]
 syscall_exit_work+0x87/0x160 kernel/entry/common.c:262
 syscall_exit_to_user_mode_prepare+0x1c/0x20 kernel/entry/common.c:289
 __syscall_exit_to_user_mode_work kernel/entry/common.c:294 [inline]
 syscall_exit_to_user_mode+0xd/0x30 kernel/entry/common.c:307
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd527e8b4c7
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:00007ffda40d1078 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd527e8b4c7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffda40d1130
RBP: 00007ffda40d1130 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffda40d2220
R13: 00005555832e2700 R14: 0000000000000001 R15: 431bde82d7b634db
 </TASK>
Modules linked in:
---[ end trace e480b71ce700ab28 ]---
RIP: 0010:may_delete+0x701/0x710 fs/namei.c:2933
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 f0 51 f5 ff e9 77 fe ff ff e8 26 d7 b6 ff 0f 0b e8 1f d7 b6 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:ffffc90000a07b90 EFLAGS: 00010293
RAX: ffffffff81b1d8b1 RBX: ffff888100416bb0 RCX: ffff88811b3abb40
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000a07bf8 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000140f54 R11: 1ffff92000140f54 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888120e569c0 R15: 1ffff11020082d76
FS:  00005555832d9380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558e6ea8e748 CR3: 00000001245eb000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400