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BTRFS: Transaction aborted (error -28)
WARNING: fs/btrfs/block-group.c:4106 at do_chunk_alloc fs/btrfs/block-group.c:4106 [inline], CPU#0: syz.0.0/5317
WARNING: fs/btrfs/block-group.c:4106 at btrfs_chunk_alloc+0x101d/0x15e0 fs/btrfs/block-group.c:4347, CPU#0: syz.0.0/5317
Modules linked in:
CPU: 0 UID: 0 PID: 5317 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:do_chunk_alloc fs/btrfs/block-group.c:4106 [inline]
RIP: 0010:btrfs_chunk_alloc+0x101f/0x15e0 fs/btrfs/block-group.c:4347
Code: f7 34 b2 fd e9 6d 01 00 00 e8 0d 3f 97 fd 84 c0 74 22 e8 e4 34 b2 fd e9 5a 01 00 00 e8 da 34 b2 fd 48 8d 3d d3 e1 07 0c 89 de <67> 48 0f b9 3a e9 b3 fc ff ff e8 72 c1 9b 07 41 89 c6 31 ff 89 c6
RSP: 0018:ffffc9000f536b40 EFLAGS: 00010287
RAX: ffffffff84136676 RBX: ffffffffffffffe4 RCX: 0000000000100000
RDX: ffffc90020001000 RSI: 00000000ffffffe4 RDI: ffffffff901b4850
RBP: 0000000000000000 R08: ffff888041764900 R09: 0000000000000003
R10: 00000000fffffffb R11: 0000000000000002 R12: 1ffff11006a76116
R13: ffff88804796fe40 R14: ffff888042298001 R15: ffff888035ad9000
FS:  00007f40c5e2d6c0(0000) GS:ffff88808ca59000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055fbcf0f8ce0 CR3: 0000000036a7c000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 find_free_extent_update_loop fs/btrfs/extent-tree.c:4306 [inline]
 find_free_extent+0x52bf/0x5f60 fs/btrfs/extent-tree.c:4727
 btrfs_reserve_extent+0x344/0x830 fs/btrfs/extent-tree.c:4821
 cow_one_range fs/btrfs/inode.c:1320 [inline]
 cow_file_range+0x588/0x1310 fs/btrfs/inode.c:1522
 writepage_delalloc+0x1270/0x1ee0 fs/btrfs/extent_io.c:1526
 extent_writepage fs/btrfs/extent_io.c:1893 [inline]
 extent_write_cache_pages fs/btrfs/extent_io.c:2580 [inline]
 btrfs_writepages+0x14df/0x2440 fs/btrfs/extent_io.c:2713
 do_writepages+0x32e/0x550 mm/page-writeback.c:2554
 filemap_writeback mm/filemap.c:387 [inline]
 filemap_flush_range mm/filemap.c:436 [inline]
 filemap_flush+0x1e1/0x2e0 mm/filemap.c:451
 btrfs_remap_file_range_prep fs/btrfs/reflink.c:847 [inline]
 btrfs_remap_file_range+0x637/0x1320 fs/btrfs/reflink.c:894
 vfs_copy_file_range+0xd80/0x1370 fs/read_write.c:1600
 __do_sys_copy_file_range fs/read_write.c:1683 [inline]
 __se_sys_copy_file_range+0x2fb/0x480 fs/read_write.c:1650
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x14d/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f40c4f9c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f40c5e2d028 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f40c5216090 RCX: 00007f40c4f9c799
RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007f40c5032bd9 R08: 0000000000000006 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f40c5216128 R14: 00007f40c5216090 R15: 00007ffcf5fbdf78
 </TASK>
----------------
Code disassembly (best guess):
   0:	f7 34 b2             	divl   (%rdx,%rsi,4)
   3:	fd                   	std
   4:	e9 6d 01 00 00       	jmp    0x176
   9:	e8 0d 3f 97 fd       	call   0xfd973f1b
   e:	84 c0                	test   %al,%al
  10:	74 22                	je     0x34
  12:	e8 e4 34 b2 fd       	call   0xfdb234fb
  17:	e9 5a 01 00 00       	jmp    0x176
  1c:	e8 da 34 b2 fd       	call   0xfdb234fb
  21:	48 8d 3d d3 e1 07 0c 	lea    0xc07e1d3(%rip),%rdi        # 0xc07e1fb
  28:	89 de                	mov    %ebx,%esi
* 2a:	67 48 0f b9 3a       	ud1    (%edx),%rdi <-- trapping instruction
  2f:	e9 b3 fc ff ff       	jmp    0xfffffce7
  34:	e8 72 c1 9b 07       	call   0x79bc1ab
  39:	41 89 c6             	mov    %eax,%r14d
  3c:	31 ff                	xor    %edi,%edi
  3e:	89 c6                	mov    %eax,%esi