BTRFS error (device loop0): failed to run delayed ref for logical 13897728 num_bytes 4096 type 176 action 1 ref_mod 1: -28 ------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 52 at fs/btrfs/extent-tree.c:2160 btrfs_run_delayed_refs+0x2df/0x2f0 fs/btrfs/extent-tree.c:2160 Modules linked in: CPU: 0 UID: 0 PID: 52 Comm: kworker/u4:4 Not tainted 6.14.0-rc1-syzkaller-00235-g9946eaf552b1 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Workqueue: events_unbound btrfs_async_reclaim_data_space RIP: 0010:btrfs_run_delayed_refs+0x2df/0x2f0 fs/btrfs/extent-tree.c:2160 Code: 8b 38 48 c7 c6 e0 b8 4b 8c 89 da e8 3b a8 4f fd e9 56 ff ff ff e8 a1 4f e7 fd 90 48 c7 c7 80 b8 4b 8c 89 de e8 82 f9 a7 fd 90 <0f> 0b 90 90 e9 38 ff ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffffc90000b2f5b8 EFLAGS: 00010246 RAX: 4e40500e7d018e00 RBX: 00000000ffffffe4 RCX: ffff88801e938000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff88804379c001 R08: ffffffff81800c22 R09: fffffbfff1cfa588 R10: dffffc0000000000 R11: fffffbfff1cfa588 R12: 0000000000000000 R13: ffff888052921000 R14: dffffc0000000000 R15: ffff888012a566f0 FS: 0000000000000000(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556713e68b70 CR3: 0000000033ca8000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_commit_transaction+0x4b9/0x3760 fs/btrfs/transaction.c:2196 flush_space+0x529/0xd30 fs/btrfs/space-info.c:842 btrfs_async_reclaim_data_space+0x2ab/0x510 fs/btrfs/space-info.c:1357 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xa66/0x1840 kernel/workqueue.c:3317 worker_thread+0x870/0xd30 kernel/workqueue.c:3398 kthread+0x7a9/0x920 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244