------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 12 at fs/btrfs/block-group.c:4000 do_chunk_alloc fs/btrfs/block-group.c:4000 [inline] WARNING: CPU: 0 PID: 12 at fs/btrfs/block-group.c:4000 btrfs_chunk_alloc+0xf9d/0x1460 fs/btrfs/block-group.c:4241 Modules linked in: CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 Not tainted 6.16.0-syzkaller-11579-g35a813e010b9 #0 PREEMPT(full) 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:do_chunk_alloc fs/btrfs/block-group.c:4000 [inline] RIP: 0010:btrfs_chunk_alloc+0xf9d/0x1460 fs/btrfs/block-group.c:4241 Code: b9 fd 84 c0 0f 84 63 01 00 00 e8 5e f8 d2 fd e9 8c 03 00 00 e8 54 f8 d2 fd 90 48 c7 c7 a0 f4 cf 8b 44 89 f6 e8 f4 86 96 fd 90 <0f> 0b 90 90 e9 3e fc ff ff e8 35 f8 d2 fd eb 05 e8 2e f8 d2 fd e8 RSP: 0018:ffffc900001e7798 EFLAGS: 00010246 RAX: e1f4f5cf26891800 RBX: ffff888052f48001 RCX: ffff88801c2dc880 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 0000000000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfa1ec R12: dffffc0000000000 R13: ffff88805447a000 R14: ffffffffffffffe4 R15: ffff888012217250 FS: 0000000000000000(0000) GS:ffff88808d219000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fef01dbd000 CR3: 0000000052c6c000 CR4: 0000000000352ef0 Call Trace: flush_space+0x30b/0xcd0 fs/btrfs/space-info.c:861 do_async_reclaim_data_space+0x11c/0x520 fs/btrfs/space-info.c:1394 btrfs_async_reclaim_data_space+0x41/0x90 fs/btrfs/space-info.c:1458 process_one_work kernel/workqueue.c:3236 [inline] process_scheduled_works+0xade/0x17b0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x711/0x8a0 kernel/kthread.c:463 ret_from_fork+0x3f9/0x770 arch/x86/kernel/process.c:148 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245