FAT-fs (loop6): error, parent dir link count too low (2)
FAT-fs (loop6): Filesystem has been set read-only
------------[ cut here ]------------
kernel BUG at fs/namei.c:2962!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 2137 Comm: syz-executor Tainted: G        W          syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:may_delete+0x701/0x710 fs/namei.c:2962
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 90 e3 f3 ff e9 77 fe ff ff e8 46 87 ae ff 0f 0b e8 3f 87 ae 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:ffffc90000757c20 EFLAGS: 00010293
RAX: ffffffff81c2e7c1 RBX: ffff88810c3b1220 RCX: ffff88811e71d100
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000757c88 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520000eaf64 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888116832470 R15: 1ffff11021876244
FS:  000055555ce8e500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbce0a17dac CR3: 000000012a75e000 CR4: 00000000003506a0
Call Trace:
 <TASK>
 vfs_rmdir+0x32/0x500 fs/namei.c:4178
 incfs_kill_sb+0x105/0x220 fs/incfs/vfs.c:1995
 deactivate_locked_super+0xb5/0x120 fs/super.c:336
 deactivate_super+0xaf/0xe0 fs/super.c:367
 cleanup_mnt+0x474/0x500 fs/namespace.c:1192
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1199
 task_work_run+0x1e1/0x250 kernel/task_work.c:203
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop+0x9b/0xb0 kernel/entry/common.c:177
 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:210
 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline]
 syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:303
 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6e4599da57
Code: a2 c7 05 9c fc 24 00 00 00 00 00 eb 96 e8 e1 12 00 00 90 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007fff9945efb8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f6e4599da57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff9945f070
RBP: 00007fff9945f070 R08: 00007fff99460070 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff99460160
R13: 00007f6e45a32048 R14: 000055555ce8e4e8 R15: 00007fff99461230
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:may_delete+0x701/0x710 fs/namei.c:2962
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 90 e3 f3 ff e9 77 fe ff ff e8 46 87 ae ff 0f 0b e8 3f 87 ae 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:ffffc90000757c20 EFLAGS: 00010293
RAX: ffffffff81c2e7c1 RBX: ffff88810c3b1220 RCX: ffff88811e71d100
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90000757c88 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff520000eaf64 R12: dffffc0000000000
R13: 0000000000000001 R14: ffff888116832470 R15: 1ffff11021876244
FS:  000055555ce8e500(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f37a31f9fd2 CR3: 000000012a75e000 CR4: 00000000003506a0