------------[ cut here ]------------
kernel BUG at fs/bcachefs/btree_write_buffer.c:801!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 UID: 0 PID: 5839 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+0x1e2/0x1f0 fs/bcachefs/btree_write_buffer.c:800
Code: 00 4c 89 f7 31 f6 e8 9d fc d9 fd 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 49 40 73 fd e9 f9 fe ff ff e8 3f 40 73 fd 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90003e37c90 EFLAGS: 00010293
RAX: ffffffff8421a971 RBX: 00000000000ffffe RCX: ffff888012475a00
RDX: 0000000000000000 RSI: 00000000000ffffe RDI: 00000000000fffff
RBP: ffff888054f80000 R08: ffffffff8421a853 R09: 1ffff1100a9f965e
R10: dffffc0000000000 R11: ffffed100a9f965f R12: dffffc0000000000
R13: ffff888054f80000 R14: ffff888054f845d8 R15: ffff888054f846a0
FS:  0000555594213500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0ac9335f40 CR3: 0000000069ec8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __bch2_fs_free fs/bcachefs/super.c:566 [inline]
 bch2_fs_release+0x2fd/0x7d0 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+0x22f/0x480 lib/kobject.c:737
 deactivate_locked_super+0xc4/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
 task_work_run+0x24f/0x310 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+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5e0257fa47
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:00007ffebbd86be8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f5e0257fa47
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffebbd86ca0
RBP: 00007ffebbd86ca0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffebbd87d20
R13: 00007f5e025f15fc R14: 00000000000179cd R15: 00007ffebbd87d60
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_fs_btree_write_buffer_exit+0x1e2/0x1f0 fs/bcachefs/btree_write_buffer.c:800
Code: 00 4c 89 f7 31 f6 e8 9d fc d9 fd 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 49 40 73 fd e9 f9 fe ff ff e8 3f 40 73 fd 90 <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc90003e37c90 EFLAGS: 00010293
RAX: ffffffff8421a971 RBX: 00000000000ffffe RCX: ffff888012475a00
RDX: 0000000000000000 RSI: 00000000000ffffe RDI: 00000000000fffff
RBP: ffff888054f80000 R08: ffffffff8421a853 R09: 1ffff1100a9f965e
R10: dffffc0000000000 R11: ffffed100a9f965f R12: dffffc0000000000
R13: ffff888054f80000 R14: ffff888054f845d8 R15: ffff888054f846a0
FS:  0000555594213500(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe2265e39a0 CR3: 0000000069ec8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400