syzbot

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BTRFS: Transaction aborted (error -2)
WARNING: fs/btrfs/extent-tree.c:3181 at do_free_extent_accounting fs/btrfs/extent-tree.c:3181 [inline], CPU#1: syz-executor/5906
WARNING: fs/btrfs/extent-tree.c:3181 at __btrfs_free_extent+0x3c6e/0x4570 fs/btrfs/extent-tree.c:3554, CPU#1: syz-executor/5906
Modules linked in:
CPU: 1 UID: 0 PID: 5906 Comm: syz-executor Not tainted syzkaller #0 PREEMPT_{RT,(full)} 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:do_free_extent_accounting fs/btrfs/extent-tree.c:3181 [inline]
RIP: 0010:__btrfs_free_extent+0x3c70/0x4570 fs/btrfs/extent-tree.c:3554
Code: e9 c8 05 00 00 e8 70 68 cd fd 84 c0 0f 84 f2 00 00 00 e8 93 6c e8 fd e9 b1 05 00 00 e8 89 6c e8 fd 48 8d 3d e2 0a 97 0b 89 de <67> 48 0f b9 3a e9 c1 e0 ff ff e8 71 6c e8 fd eb 05 e8 6a 6c e8 fd
RSP: 0018:ffffc90003ca7440 EFLAGS: 00010293
RAX: ffffffff83dc1487 RBX: 00000000fffffffe RCX: ffff88802d3d9e80
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: ffffffff8f731f70
RBP: ffffc90003ca75f0 R08: ffff88802d3d9e80 R09: 0000000000000003
R10: 0000000000000100 R11: 00000000fffffffb R12: dffffc0000000000
R13: ffff88805d2a0f78 R14: 0000000000000000 R15: ffff8880335ac001
FS:  000055555fc63500(0000) GS:ffff888126432000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000019e74c146000 CR3: 00000000289ae000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 run_delayed_tree_ref fs/btrfs/extent-tree.c:1824 [inline]
 run_one_delayed_ref fs/btrfs/extent-tree.c:1851 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2058 [inline]
 __btrfs_run_delayed_refs+0x1881/0x4780 fs/btrfs/extent-tree.c:2133
 btrfs_run_delayed_refs+0xe6/0x3b0 fs/btrfs/extent-tree.c:2245
 btrfs_commit_transaction+0xfb6/0x31a0 fs/btrfs/transaction.c:2473
 sync_filesystem+0x1ce/0x250 fs/sync.c:66
 generic_shutdown_super+0x77/0x2d0 fs/super.c:625
 kill_anon_super+0x3b/0x70 fs/super.c:1292
 btrfs_kill_super+0x41/0x50 fs/btrfs/super.c:2127
 deactivate_locked_super+0xbc/0x130 fs/super.c:476
 cleanup_mnt+0x437/0x4d0 fs/namespace.c:1312
 task_work_run+0x1d9/0x270 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
 exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
 do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f669236da57
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:00007ffd3c75df38 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f6692402048 RCX: 00007f669236da57
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffd3c75dff0
RBP: 00007ffd3c75dff0 R08: 00007ffd3c75eff0 R09: 00000000ffffffff
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd3c75f080
R13: 00007f6692402048 R14: 000000000001cb05 R15: 00007ffd3c75f0c0
 </TASK>
----------------
Code disassembly (best guess):
   0:	e9 c8 05 00 00       	jmp    0x5cd
   5:	e8 70 68 cd fd       	call   0xfdcd687a
   a:	84 c0                	test   %al,%al
   c:	0f 84 f2 00 00 00    	je     0x104
  12:	e8 93 6c e8 fd       	call   0xfde86caa
  17:	e9 b1 05 00 00       	jmp    0x5cd
  1c:	e8 89 6c e8 fd       	call   0xfde86caa
  21:	48 8d 3d e2 0a 97 0b 	lea    0xb970ae2(%rip),%rdi        # 0xb970b0a
  28:	89 de                	mov    %ebx,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 c1 e0 ff ff       	jmp    0xffffe0f5
  34:	e8 71 6c e8 fd       	call   0xfde86caa
  39:	eb 05                	jmp    0x40
  3b:	e8 6a 6c e8 fd       	call   0xfde86caa