BTRFS error (device loop0): allocation failed flags 4, wanted 4096 tree-log 0, relocation: 0 BTRFS info (device loop0): space_info DATA+METADATA (sub-group id 0) has -1441792 free, is full BTRFS info (device loop0): space_info total=11534336, used=5251072, pinned=851968, reserved=5431296, may_use=1441792, readonly=0 zone_unusable=0 BTRFS info (device loop0): global_block_rsv: size 1441792 reserved 1437696 BTRFS info (device loop0): trans_block_rsv: size 0 reserved 0 BTRFS info (device loop0): chunk_block_rsv: size 0 reserved 0 BTRFS info (device loop0): remap_block_rsv: size 0 reserved 0 BTRFS info (device loop0): delayed_block_rsv: size 0 reserved 0 BTRFS info (device loop0): delayed_refs_rsv: size 0 reserved 0 BTRFS info (device loop0): block group 5242880 has 1638400 bytes, 1351680 used 286720 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (0 bytes available) BTRFS info (device loop0): block group has cluster?: no BTRFS info (device loop0): 0 free space entries at or bigger than 4096 bytes BTRFS info (device loop0): block group 6881280 has 1638400 bytes, 1638400 used 0 pinned 0 reserved 0 delalloc 0 super 0 zone_unusable (0 bytes available) BTRFS info (device loop0): block group has cluster?: no BTRFS info (device loop0): 0 free space entries at or bigger than 4096 bytes BTRFS info (device loop0): block group 8519680 has 8257536 bytes, 2260992 used 565248 pinned 4096 reserved 0 delalloc 0 super 0 zone_unusable (5427200 bytes available) BTRFS critical (device loop0): entry offset 11350016, bytes 5427200, bitmap no BTRFS info (device loop0): block group has cluster?: no BTRFS info (device loop0): 1 free space entries at or bigger than 4096 bytes BTRFS info (device loop0): 5427200 bytes available across all block groups BTRFS warning (device loop0): Skipping commit of aborted transaction. ------------[ cut here ]------------ btrfs_abort_should_print_stack(__error) WARNING: fs/btrfs/transaction.c:2068 at cleanup_transaction+0x727/0x7c0 fs/btrfs/transaction.c:2068, CPU#0: kworker/u4:0/12 Modules linked in: CPU: 0 UID: 0 PID: 12 Comm: kworker/u4:0 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: events_unbound btrfs_async_reclaim_data_space RIP: 0010:cleanup_transaction+0x727/0x7c0 fs/btrfs/transaction.c:2068 Code: 08 74 1a 41 83 fc fb 74 0d 41 83 fc f4 75 15 e8 ef f6 b4 fd eb 17 e8 e8 f6 b4 fd eb 10 e8 e1 f6 b4 fd eb 09 e8 da f6 b4 fd 90 <0f> 0b 90 41 f7 dc e9 44 fa ff ff 44 89 e9 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc9000025f540 EFLAGS: 00010293 RAX: ffffffff84118af6 RBX: ffff888012f5e000 RCX: ffff88801b774a80 RDX: 0000000000000000 RSI: ffffffff8f1c6880 RDI: 00000000ffffffe4 RBP: ffffc9000025f670 R08: ffff88801b774a80 R09: 0000000000000003 R10: 00000000fffffffb R11: 0000000000000000 R12: 00000000ffffffe4 R13: ffff8880442c7be8 R14: ffff8880442c7c48 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88808c546000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000010000 CR3: 000000001ada8000 CR4: 0000000000352ef0 Call Trace: btrfs_commit_transaction+0x262c/0x30b0 fs/btrfs/transaction.c:2664 flush_space+0x28a/0xde0 fs/btrfs/space-info.c:-1 do_async_reclaim_data_space+0x29e/0x550 fs/btrfs/space-info.c:1471 btrfs_async_reclaim_data_space+0x41/0x90 fs/btrfs/space-info.c:1519 process_one_work kernel/workqueue.c:3322 [inline] process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486 kthread+0x388/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245