------------[ cut here ]------------
btrfs_abort_should_print_stack(__error)
WARNING: fs/btrfs/extent-tree.c:3429 at __btrfs_free_extent.isra.0+0x82e/0x2200 fs/btrfs/extent-tree.c:3429, CPU#1: kworker/u8:17/9339
Modules linked in:
CPU: 1 UID: 0 PID: 9339 Comm: kworker/u8:17 Tainted: G             L      syzkaller #0 PREEMPT(lazy) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026
Workqueue: events_unbound btrfs_async_reclaim_metadata_space
RIP: 0010:__btrfs_free_extent.isra.0+0x82e/0x2200 fs/btrfs/extent-tree.c:3429
Code: c6 00 18 49 8c 48 89 fb e8 cf b1 ab fd 8d 43 1e 83 f8 19 77 0f ba 01 00 04 02 48 0f a3 c2 0f 82 b5 55 ce fc e8 e3 b6 ab fd 90 <0f> 0b 90 e9 a7 55 ce fc e8 d5 b6 ab fd 48 8d 7b 60 48 b8 00 00 00
RSP: 0018:ffffc90004d07640 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffffffffffffffe4 RCX: 0000000000000000
RDX: ffff88804c7f5dc0 RSI: ffffffff84607f6d RDI: ffff88804c7f5dc0
RBP: 0000000000101000 R08: 0000000000000005 R09: fffffffffffffffb
R10: ffffffffffffffe4 R11: 0000000000000000 R12: ffff8880758570b0
R13: ffff8880298c1720 R14: ffff88804eba8000 R15: 00000000ffffffe4
FS:  0000000000000000(0000) GS:ffff888122a44000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f90cccb7000 CR3: 00000000522d5000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 run_delayed_data_ref fs/btrfs/extent-tree.c:1665 [inline]
 run_one_delayed_ref fs/btrfs/extent-tree.c:1855 [inline]
 btrfs_run_delayed_refs_for_head fs/btrfs/extent-tree.c:2058 [inline]
 __btrfs_run_delayed_refs+0x9bb/0x39b0 fs/btrfs/extent-tree.c:2134
 btrfs_run_delayed_refs+0x1a5/0x2c0 fs/btrfs/extent-tree.c:2246
 flush_space+0xb7e/0xe20 fs/btrfs/space-info.c:896
 do_async_reclaim_metadata_space+0x139/0x4c0 fs/btrfs/space-info.c:1211
 btrfs_async_reclaim_metadata_space+0xd0/0x170 fs/btrfs/space-info.c:1278
 process_one_work+0xac7/0x1b10 kernel/workqueue.c:3396
 process_scheduled_works kernel/workqueue.c:3479 [inline]
 worker_thread+0x5ef/0xe50 kernel/workqueue.c:3560
 kthread+0x373/0x450 kernel/kthread.c:436
 ret_from_fork+0x730/0xd60 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>