BTRFS error (device loop6): failed to run delayed ref for logical 9437184 num_bytes 65536 type 178 action 1 ref_mod 1: -28
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BTRFS: Transaction aborted (error -28)
WARNING: CPU: 0 PID: 11204 at fs/btrfs/extent-tree.c:2161 btrfs_run_delayed_refs+0x2fa/0x3b0
Modules linked in:
CPU: 0 UID: 0 PID: 11204 Comm: syz.6.599 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:btrfs_run_delayed_refs+0x2fa/0x3b0
Code: 00 e8 fa 8a e5 fd 84 c0 74 29 e8 91 d8 fe fd e9 8d 00 00 00 e8 87 d8 fe fd 90 48 c7 c7 80 28 cd 8b 44 89 fe e8 47 75 c2 fd 90 <0f> 0b 90 90 e9 20 ff ff ff e8 b8 89 b9 07 41 89 c4 31 ff 89 c6 e8
RSP: 0018:ffffc9000464f158 EFLAGS: 00010246
RAX: 31ee19a1a4964b00 RBX: ffff88812882d5c8 RCX: 0000000000080000
RDX: ffffc90008e19000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: 0000000000000000 R08: ffff88804b024253 R09: 1ffff1100960484a
R10: dffffc0000000000 R11: ffffed100960484b R12: ffff88812b0b8001
R13: ffff88803f369000 R14: dffffc0000000000 R15: 00000000ffffffe4
FS:  00007fe24d9a56c0(0000) GS:ffff8880b8613000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1d05d4b000 CR3: 0000000128c1a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 btrfs_commit_transaction+0x269/0x3950
 btrfs_sync_file+0xd30/0x1160
 btrfs_do_write_iter+0x59a/0x710
 iter_file_splice_write+0x975/0x10e0
 direct_splice_actor+0x101/0x160
 splice_direct_to_actor+0x5a8/0xcc0
 do_splice_direct+0x181/0x270
 do_sendfile+0x4da/0x7e0
 __se_sys_sendfile64+0x13e/0x190
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe24cb8eba9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe24d9a5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fe24cdd5fa0 RCX: 00007fe24cb8eba9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000005
RBP: 00007fe24cc11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000020fffe82 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe24cdd6038 R14: 00007fe24cdd5fa0 R15: 00007ffc136278a8
 </TASK>
