BTRFS warning (device loop0): Skipping commit of aborted transaction.
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BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/transaction.c:2067 at cleanup_transaction+0x800/0x9d0 fs/btrfs/transaction.c:2067, CPU#0: syz.0.0/5359
Modules linked in:
CPU: 0 UID: 0 PID: 5359 Comm: syz.0.0 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
RIP: 0010:cleanup_transaction+0x803/0x9d0 fs/btrfs/transaction.c:2067
Code: 0a e8 51 ba d5 fd e9 87 00 00 00 e8 27 c1 ba fd 84 c0 74 2f e8 3e ba d5 fd eb 77 e8 37 ba d5 fd 48 8d 3d c0 7d 49 0c 44 89 e6 <67> 48 0f b9 3a 49 bf 00 00 00 00 00 fc ff df 4c 8b 6c 24 18 e9 8d
RSP: 0018:ffffc9000e20e240 EFLAGS: 00010293
RAX: ffffffff83f00bd9 RBX: ffff888023e20000 RCX: ffff888036348000
RDX: 0000000000000000 RSI: 00000000ffffffe4 RDI: ffffffff903989a0
RBP: ffffc9000e20e370 R08: ffff888036348000 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000000 R12: 00000000ffffffe4
R13: ffff888047a8c930 R14: 0000000000000000 R15: 1ffff11008f51926
FS:  00007f0b592f26c0(0000) GS:ffff88808c891000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056431b46b660 CR3: 00000000391e3000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_commit_transaction+0x2594/0x2fc0 fs/btrfs/transaction.c:2659
 btrfs_sync_file+0xdf0/0x1200 fs/btrfs/file.c:1822
 generic_write_sync include/linux/fs.h:2654 [inline]
 btrfs_do_write_iter+0x6a3/0x840 fs/btrfs/file.c:1473
 __kernel_write_iter+0x41e/0x880 fs/read_write.c:621
 __kernel_write+0x106/0x170 fs/read_write.c:641
 __dump_emit fs/coredump.c:1226 [inline]
 dump_emit+0x8e9/0xab0 fs/coredump.c:1264
 writenote+0x1c0/0x2f0 fs/binfmt_elf.c:1434
 write_note_info fs/binfmt_elf.c:1934 [inline]
 elf_core_dump+0x2fbb/0x3ad0 fs/binfmt_elf.c:2096
 coredump_write+0x12b0/0x19d0 fs/coredump.c:1053
 do_coredump fs/coredump.c:1132 [inline]
 vfs_coredump+0x3807/0x4530 fs/coredump.c:1206
 get_signal+0x1107/0x1330 kernel/signal.c:3022
 arch_do_signal_or_restart+0xbc/0x840 arch/x86/kernel/signal.c:337
 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
 exit_to_user_mode_loop+0xa9/0x680 kernel/entry/common.c:98
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline]
 ret_from_fork+0x593/0xb70 arch/x86/kernel/process.c:167
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	e8 51 ba d5 fd       	call   0xfdd5ba56
   5:	e9 87 00 00 00       	jmp    0x91
   a:	e8 27 c1 ba fd       	call   0xfdbac136
   f:	84 c0                	test   %al,%al
  11:	74 2f                	je     0x42
  13:	e8 3e ba d5 fd       	call   0xfdd5ba56
  18:	eb 77                	jmp    0x91
  1a:	e8 37 ba d5 fd       	call   0xfdd5ba56
  1f:	48 8d 3d c0 7d 49 0c 	lea    0xc497dc0(%rip),%rdi        # 0xc497de6
  26:	44 89 e6             	mov    %r12d,%esi
* 29:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2e:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  35:	fc ff df
  38:	4c 8b 6c 24 18       	mov    0x18(%rsp),%r13
  3d:	e9                   	.byte 0xe9
  3e:	8d                   	.byte 0x8d