bcachefs (loop2): shutting down
VFS: Busy inodes after unmount of loop2 (bcachefs)
------------[ cut here ]------------
kernel BUG at fs/super.c:650!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5834 Comm: syz-executor Not tainted 6.14.0-syzkaller-05877-g1a9239bb4253 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:generic_shutdown_super+0x2e9/0x390 fs/super.c:650
Code: 28 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 9a 00 00 00 48 8b 55 00 48 8d b3 68 06 00 00 48 c7 c7 c0 ae 9e 8b e8 e8 7e 6a ff 90 <0f> 0b e8 40 f6 ed ff e9 3c fd ff ff 4c 89 ef e8 33 f6 ed ff e9 d0
RSP: 0018:ffffc900031bfd98 EFLAGS: 00010286
RAX: 0000000000000032 RBX: ffff88805944e000 RCX: ffffffff819a6dc9
RDX: 0000000000000000 RSI: ffffffff819aee0d RDI: 0000000000000005
RBP: ffffffff8ecaa4a0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: ffff88805944e780
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88802a0a8740
FS:  000055557108c500(0000) GS:ffff888124a41000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fab2f0d56c0 CR3: 0000000060d04000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 bch2_kill_sb+0x3b/0x50 fs/bcachefs/fs.c:2312
 deactivate_locked_super+0xc1/0x1a0 fs/super.c:473
 deactivate_super fs/super.c:506 [inline]
 deactivate_super+0xde/0x100 fs/super.c:502
 cleanup_mnt+0x225/0x450 fs/namespace.c:1435
 task_work_run+0x150/0x240 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x27b/0x2a0 kernel/entry/common.c:218
 do_syscall_64+0xda/0x260 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8efa18e497
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 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 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffcc8941c68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f8efa20e08c RCX: 00007f8efa18e497
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffcc8941d20
RBP: 00007ffcc8941d20 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffcc8942db0
R13: 00007f8efa20e08c R14: 0000000000042c16 R15: 00007ffcc8942df0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:generic_shutdown_super+0x2e9/0x390 fs/super.c:650
Code: 28 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 9a 00 00 00 48 8b 55 00 48 8d b3 68 06 00 00 48 c7 c7 c0 ae 9e 8b e8 e8 7e 6a ff 90 <0f> 0b e8 40 f6 ed ff e9 3c fd ff ff 4c 89 ef e8 33 f6 ed ff e9 d0
RSP: 0018:ffffc900031bfd98 EFLAGS: 00010286
RAX: 0000000000000032 RBX: ffff88805944e000 RCX: ffffffff819a6dc9
RDX: 0000000000000000 RSI: ffffffff819aee0d RDI: 0000000000000005
RBP: ffffffff8ecaa4a0 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000080000000 R11: 0000000000000000 R12: ffff88805944e780
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88802a0a8740
FS:  000055557108c500(0000) GS:ffff888124a41000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3021aff8 CR3: 0000000060d04000 CR4: 0000000000350ef0