VFS: Lookup of '.index' in exfat loop9 would have caused loop
VFS: Lookup of '.index' in exfat loop9 would have caused loop
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kernel BUG at fs/namei.c:2933!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1062 Comm: syz-executor Not tainted 5.15.180-syzkaller-00024-g88c4075c39ed #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
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 00 54 f5 ff e9 77 fe ff ff e8 26 e6 b6 ff 0f 0b e8 1f e6 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:ffffc90000a97b10 EFLAGS: 00010293
RAX: ffffffff81b1b861 RBX: ffff8881004ec770 RCX: ffff888110c5bb40
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000a97b78 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000152f44 R11: 1ffff92000152f44 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888109bcfbe0 R15: 1ffff1102009d8ee
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe888ad710 CR3: 0000000120787000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 3a810b1eb6134bdc 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:1143
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1150
 task_work_run+0x127/0x190 kernel/task_work.c:188
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xa76/0x27a0 kernel/exit.c:880
 do_group_exit+0x141/0x310 kernel/exit.c:1002
 __do_sys_exit_group kernel/exit.c:1013 [inline]
 __se_sys_exit_group kernel/exit.c:1011 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1011
 x64_sys_call+0x832/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fbe87b53969
Code: Unable to access opcode bytes at RIP 0x7fbe87b5393f.
RSP: 002b:00007fff2f3f3438 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007fbe87bd58c2 RCX: 00007fbe87b53969
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000028 R08: 00007fff2f3f11d6 R09: 00007fff2f3f46f0
R10: 000000000000000a R11: 0000000000000246 R12: 00007fff2f3f46f0
R13: 00007fbe87bd589d R14: 0000000000010bc7 R15: 00007fff2f3f68b0
 </TASK>
Modules linked in:
---[ end trace 9e39c83d791a55c0 ]---
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 00 54 f5 ff e9 77 fe ff ff e8 26 e6 b6 ff 0f 0b e8 1f e6 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:ffffc90000a97b10 EFLAGS: 00010293
RAX: ffffffff81b1b861 RBX: ffff8881004ec770 RCX: ffff888110c5bb40
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000a97b78 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000152f44 R11: 1ffff92000152f44 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888109bcfbe0 R15: 1ffff1102009d8ee
FS:  0000000000000000(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcc4d25cf98 CR3: 0000000128b22000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 3a810b1eb6134bdc DR6: 00000000fffe0ff0 DR7: 0000000000000400