BTRFS error (device loop0): failed to run delayed ref for logical 5242880 num_bytes 4096 type 178 action 1 ref_mod 1: -2 ------------[ cut here ]------------ BTRFS: Transaction aborted (error -2) WARNING: CPU: 1 PID: 5092 at fs/btrfs/extent-tree.c:2246 btrfs_run_delayed_refs+0x2d3/0x330 fs/btrfs/extent-tree.c:2246 Modules linked in: CPU: 1 PID: 5092 Comm: syz-executor.0 Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:btrfs_run_delayed_refs+0x2d3/0x330 fs/btrfs/extent-tree.c:2246 Code: 63 94 57 07 31 db e9 78 ff ff ff e8 a7 4e 61 fe e9 b0 fd ff ff e8 3d 01 06 fe 90 48 c7 c7 00 f4 75 8b 89 de e8 0e 63 c8 fd 90 <0f> 0b 90 90 eb bc 48 8b 3c 24 e8 de 4e 61 fe e9 7a fe ff ff 4c 89 RSP: 0018:ffffc90003257b60 EFLAGS: 00010286 RAX: 0000000000000000 RBX: 00000000fffffffe RCX: ffffffff81503039 RDX: ffff8880285c5a00 RSI: ffffffff81503046 RDI: 0000000000000001 RBP: ffff888058c1ecb8 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffffed10023fdd62 R15: ffff888058c1ed18 FS: 0000555565193480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3332f000 CR3: 0000000060a06000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: btrfs_commit_transaction+0x783/0x3b30 fs/btrfs/transaction.c:2185 btrfs_sync_fs+0x13b/0x7c0 fs/btrfs/super.c:1006 sync_filesystem+0x1cc/0x290 fs/sync.c:66 generic_shutdown_super+0x7e/0x3d0 fs/super.c:620 kill_anon_super+0x3a/0x60 fs/super.c:1225 btrfs_kill_super+0x3b/0x50 fs/btrfs/super.c:2091 deactivate_locked_super+0xbe/0x1a0 fs/super.c:472 deactivate_super+0xde/0x100 fs/super.c:505 cleanup_mnt+0x222/0x450 fs/namespace.c:1267 task_work_run+0x14e/0x250 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline] exit_to_user_mode_loop kernel/entry/common.c:114 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline] __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline] syscall_exit_to_user_mode+0x278/0x2a0 kernel/entry/common.c:218 do_syscall_64+0xdc/0x260 arch/x86/entry/common.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f65bde7f097 Code: b0 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b0 ff ff ff f7 d8 64 89 02 b8 RSP: 002b:00007fff0229bbd8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f65bde7f097 RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff0229bc90 RBP: 00007fff0229bc90 R08: 0000000000000000 R09: 0000000000000000 R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff0229cd50 R13: 00007f65bdec9336 R14: 000000000007ea70 R15: 0000000000000006