------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 6820 at fs/btrfs/block-group.c:3972 do_chunk_alloc fs/btrfs/block-group.c:3972 [inline] WARNING: CPU: 0 PID: 6820 at fs/btrfs/block-group.c:3972 btrfs_chunk_alloc+0xe7c/0x10b0 fs/btrfs/block-group.c:4214 Modules linked in: CPU: 0 UID: 0 PID: 6820 Comm: kworker/u8:9 Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 Workqueue: events_unbound btrfs_async_reclaim_metadata_space RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:3972 [inline] RIP: 0010:btrfs_chunk_alloc+0xe7c/0x10b0 fs/btrfs/block-group.c:4214 Code: 48 c7 c6 e0 28 af 8b 44 89 f2 e8 bf 86 4a fd e9 05 fd ff ff e8 05 36 e0 fd 90 48 c7 c7 80 28 af 8b 44 89 f6 e8 55 92 a4 fd 90 <0f> 0b 90 90 e9 e6 fc ff ff e8 e6 35 e0 fd eb 05 e8 df 35 e0 fd 48 RSP: 0018:ffffc900034f7838 EFLAGS: 00010246 RAX: fa5308ba386afa00 RBX: 0000000000000000 RCX: ffff888025321e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 00000000ffffff01 R08: ffff8880b8823e93 R09: 1ffff110171047d2 R10: dffffc0000000000 R11: ffffed10171047d3 R12: ffff888057534800 R13: dffffc0000000000 R14: ffffffffffffffe4 R15: ffff88806b450000 FS: 0000000000000000(0000) GS:ffff888126100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5a6a9013b0 CR3: 000000006b44e000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: flush_space+0x2fe/0xcc0 fs/btrfs/space-info.c:815 btrfs_async_reclaim_metadata_space+0x185/0x3d0 fs/btrfs/space-info.c:1120 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xadb/0x17a0 kernel/workqueue.c:3319 worker_thread+0x8a0/0xda0 kernel/workqueue.c:3400 kthread+0x70e/0x8a0 kernel/kthread.c:464 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245