------------[ cut here ]------------
kernel BUG at fs/bcachefs/btree_write_buffer.c:800!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5840 Comm: syz-executor Not tainted 6.12.0-rc7-syzkaller-00070-g0a9b9d17f3a7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:bch2_fs_btree_write_buffer_exit+0x39c/0x490 fs/bcachefs/btree_write_buffer.c:800
Code: 0c 01 00 00 8b ab 00 a5 04 00 bf ff ff 0f 00 81 e5 ff ff 0f 00 89 ee e8 52 99 8e fd 81 fd ff ff 0f 00 74 08 e8 05 97 8e fd 90 <0f> 0b 4c 8d ab a0 46 00 00 e9 e5 fc ff ff 4c 89 e7 e8 2e 6a ef fd
RSP: 0018:ffffc900030cfd20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888065200000 RCX: ffffffff83fee33e
RDX: ffff88807d6cda00 RSI: ffffffff83fee34b RDI: 0000000000000005
RBP: 00000000000ffffe R08: 0000000000000005 R09: 00000000000fffff
R10: 00000000000ffffe R11: 0000000000000000 R12: ffff8880652045d8
R13: ffff8880652046a0 R14: 0000000000000000 R15: 0000000000000000
FS:  0000555562a2f500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdb56bd3d58 CR3: 0000000063a74000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 __bch2_fs_free fs/bcachefs/super.c:566 [inline]
 bch2_fs_release+0x23c/0x920 fs/bcachefs/super.c:610
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1e7/0x5a0 lib/kobject.c:737
 deactivate_locked_super+0xc1/0x1a0 fs/super.c:473
 deactivate_super+0xde/0x100 fs/super.c:506
 cleanup_mnt+0x222/0x450 fs/namespace.c:1373
 task_work_run+0x151/0x250 kernel/task_work.c:239
 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:328 [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/0x250 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbc3d77fa47
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:00007fff95fc10d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fbc3d77fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff95fc1190
RBP: 00007fff95fc1190 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff95fc2210
R13: 00007fbc3d7f15fc R14: 000000000003fac8 R15: 00007fff95fc2250
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_fs_btree_write_buffer_exit+0x39c/0x490 fs/bcachefs/btree_write_buffer.c:800
Code: 0c 01 00 00 8b ab 00 a5 04 00 bf ff ff 0f 00 81 e5 ff ff 0f 00 89 ee e8 52 99 8e fd 81 fd ff ff 0f 00 74 08 e8 05 97 8e fd 90 <0f> 0b 4c 8d ab a0 46 00 00 e9 e5 fc ff ff 4c 89 e7 e8 2e 6a ef fd
RSP: 0018:ffffc900030cfd20 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888065200000 RCX: ffffffff83fee33e
RDX: ffff88807d6cda00 RSI: ffffffff83fee34b RDI: 0000000000000005
RBP: 00000000000ffffe R08: 0000000000000005 R09: 00000000000fffff
R10: 00000000000ffffe R11: 0000000000000000 R12: ffff8880652045d8
R13: ffff8880652046a0 R14: 0000000000000000 R15: 0000000000000000
FS:  0000555562a2f500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f31c92c2723 CR3: 0000000063a74000 CR4: 0000000000350ef0