FAT-fs (loop8): error, parent dir link count too low (2)
FAT-fs (loop8): Filesystem has been set read-only
------------[ cut here ]------------
kernel BUG at fs/namei.c:2794!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 1969 Comm: syz-executor Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:may_delete+0x7a5/0x7b0 fs/namei.c:2794
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c cb fd ff ff 48 89 df e8 6c 0a f5 ff e9 be fd ff ff e8 e2 93 ba ff 0f 0b e8 db 93 ba ff <0f> 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8
RSP: 0018:ffffc90001107cd0 EFLAGS: 00010293
RAX: ffffffff81aa0e25 RBX: ffff88812a4b2330 RCX: ffff888139efe2c0
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90001107d48 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000220f7c R12: ffff88812a67ab40
R13: 1ffff11025496466 R14: ffff8881103217a0 R15: dffffc0000000000
FS:  0000555591ae2500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f83749fe000 CR3: 000000012837d000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 vfs_rmdir+0x29/0x3c0 fs/namei.c:3841
 incfs_kill_sb+0xf7/0x200 fs/incfs/vfs.c:1973
 deactivate_locked_super+0xa0/0x100 fs/super.c:335
 deactivate_super+0xaf/0xe0 fs/super.c:366
 cleanup_mnt+0x44f/0x500 fs/namespace.c:1123
 __cleanup_mnt+0x19/0x20 fs/namespace.c:1130
 task_work_run+0x127/0x190 kernel/task_work.c:189
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop+0xcb/0xe0 kernel/entry/common.c:172
 exit_to_user_mode_prepare+0x76/0xa0 kernel/entry/common.c:199
 syscall_exit_to_user_mode+0x1d/0x40 kernel/entry/common.c:274
 do_syscall_64+0x3d/0x40 arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f7fc32c3097
Code: a2 c7 05 5c 06 25 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:00007ffc9b7bb5b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f7fc32c3097
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc9b7bb670
RBP: 00007ffc9b7bb670 R08: 00007ffc9b7bc670 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffc9b7bc760
R13: 00007f7fc33571ca R14: 0000555591ae24e8 R15: 00007ffc9b7bd830
Modules linked in:
---[ end trace a650f38dddfee6ec ]---
RIP: 0010:may_delete+0x7a5/0x7b0 fs/namei.c:2794
Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c cb fd ff ff 48 89 df e8 6c 0a f5 ff e9 be fd ff ff e8 e2 93 ba ff 0f 0b e8 db 93 ba ff <0f> 0b 66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 56 53 48 89 fb e8
RSP: 0018:ffffc90001107cd0 EFLAGS: 00010293
RAX: ffffffff81aa0e25 RBX: ffff88812a4b2330 RCX: ffff888139efe2c0
RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000
RBP: ffffc90001107d48 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000220f7c R12: ffff88812a67ab40
R13: 1ffff11025496466 R14: ffff8881103217a0 R15: dffffc0000000000
FS:  0000555591ae2500(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f83749fe000 CR3: 000000012837d000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400