VFS: Lookup of '.index' in exfat loop4 would have caused loop
VFS: Lookup of '.index' in exfat loop4 would have caused loop
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kernel BUG at fs/namei.c:2786!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 284 Comm: syz-executor Not tainted 5.10.236-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:may_delete+0x7b1/0x7c0 fs/namei.c:2786
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c dd fd ff ff 48 89 df e8 20 25 f5 ff e9 d0 fd ff ff e8 d6 3e bb ff 0f 0b e8 cf 3e bb 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:ffffc90000ba7b38 EFLAGS: 00010293
RAX: ffffffff81a84c71 RBX: ffff88810fe83440 RCX: ffff88810ad4e2c0
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000ba7bb8 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000174f4c R11: 1ffff92000174f4c R12: ffff88812bc4a1d0
R13: 1ffff11021fd0688 R14: ffff88810fe83458 R15: ffff88811bc35030
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f919ce5d710 CR3: 0000000125a06000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vfs_rmdir+0x2c/0x3e0 fs/namei.c:3833
 incfs_kill_sb+0xfe/0x210 fs/incfs/vfs.c:1973
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x446/0x500 fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125
 task_work_run+0x127/0x190 kernel/task_work.c:189
 exit_task_work include/linux/task_work.h:33 [inline]
 do_exit+0xa27/0x2470 kernel/exit.c:863
 do_group_exit+0x141/0x310 kernel/exit.c:985
 __do_sys_exit_group kernel/exit.c:996 [inline]
 __se_sys_exit_group kernel/exit.c:994 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:994
 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f919c103969
Code: Unable to access opcode bytes at RIP 0x7f919c10393f.
RSP: 002b:00007ffd4e4db488 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 00007f919c1858c2 RCX: 00007f919c103969
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000028 R08: 00007ffd4e4d9226 R09: 00007ffd4e4dc740
R10: 000000000000000a R11: 0000000000000246 R12: 00007ffd4e4dc740
R13: 00007f919c18589d R14: 00000000000072e9 R15: 00007ffd4e4de900
Modules linked in:
---[ end trace 627d4568f7d3ee75 ]---
RIP: 0010:may_delete+0x7b1/0x7c0 fs/namei.c:2786
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c dd fd ff ff 48 89 df e8 20 25 f5 ff e9 d0 fd ff ff e8 d6 3e bb ff 0f 0b e8 cf 3e bb 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:ffffc90000ba7b38 EFLAGS: 00010293
RAX: ffffffff81a84c71 RBX: ffff88810fe83440 RCX: ffff88810ad4e2c0
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000ba7bb8 R08: 0000000000000004 R09: 0000000000000003
R10: fffff52000174f4c R11: 1ffff92000174f4c R12: ffff88812bc4a1d0
R13: 1ffff11021fd0688 R14: ffff88810fe83458 R15: ffff88811bc35030
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000000000c0 CR3: 000000010c9e3000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400