------------[ cut here ]------------ btrfs_abort_should_print_stack(__error) WARNING: fs/btrfs/delayed-inode.c:1027 at __btrfs_update_delayed_inode+0xcb2/0xd60 fs/btrfs/delayed-inode.c:1027, 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_metadata_space RIP: 0010:__btrfs_update_delayed_inode+0xcb2/0xd60 fs/btrfs/delayed-inode.c:1027 Code: 47 83 7c 24 18 fb 74 39 83 7c 24 18 f4 75 40 e8 94 9e 97 fd eb 42 e8 8d 9e 97 fd eb 10 e8 86 9e 97 fd eb 09 e8 7f 9e 97 fd 90 <0f> 0b 90 44 89 e9 f7 d9 4c 8b 7c 24 28 4c 8b 74 24 30 e9 45 fd ff RSP: 0000:ffffc9000025f380 EFLAGS: 00010293 RAX: ffffffff842f9641 RBX: 00000000ffffffe4 RCX: ffff88801b704b00 RDX: 0000000000000000 RSI: ffffffff8f3f4750 RDI: 00000000ffffffe4 RBP: ffffc9000025f4b0 R08: ffff88801b704b00 R09: 0000000000000003 R10: 00000000fffffffb R11: 0000000000000000 R12: dffffc0000000000 R13: 00000000ffffffe4 R14: ffff8880429642c0 R15: ffff8880429a55a0 FS: 0000000000000000(0000) GS:ffff88808c30a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb912418818 CR3: 0000000013727000 CR4: 0000000000352ef0 Call Trace: btrfs_update_delayed_inode fs/btrfs/delayed-inode.c:1103 [inline] __btrfs_commit_inode_delayed_items+0x1d75/0x1ec0 fs/btrfs/delayed-inode.c:1127 __btrfs_run_delayed_items+0x1d0/0x420 fs/btrfs/delayed-inode.c:1158 flush_space+0x5fd/0xde0 fs/btrfs/space-info.c:875 do_async_reclaim_metadata_space+0x3e8/0x940 fs/btrfs/space-info.c:1211 btrfs_async_reclaim_metadata_space+0x89/0xe0 fs/btrfs/space-info.c:1278 process_one_work kernel/workqueue.c:3387 [inline] process_scheduled_works+0xc3d/0x1630 kernel/workqueue.c:3470 worker_thread+0xa47/0xfb0 kernel/workqueue.c:3551 kthread+0x38b/0x480 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