syzbot

Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe4fea10a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f57c5c01e19
RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00007ffe4fea10b0 R08: 0000000000000002 R09: 00007f57c5003731
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
------------[ cut here ]------------
kernel BUG at fs/btrfs/extent-tree.c:3281!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 5062 Comm: syz-executor249 Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:btrfs_free_tree_block+0x266/0xc90 fs/btrfs/extent-tree.c:3281
Code: 00 48 8b 74 24 10 31 d2 4c 89 e7 e8 d4 36 17 00 31 ff 89 c6 89 44 24 10 e8 27 6e 21 fe 8b 44 24 10 85 c0 74 26 e8 6a 71 21 fe <0f> 0b e8 63 71 21 fe 48 89 ee 48 c7 c7 fa ff ff ff c6 44 24 58 01
RSP: 0018:ffffc90003a2ec30 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888078510d90 RCX: 0000000000000000
RDX: ffff88801b4a1d40 RSI: ffffffff835fe0d6 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 0000000000000000 R12: ffff888072cce498
R13: 1ffff92000745d8a R14: 0000000000000001 R15: ffff88801cccc000
FS:  0000555557167300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 0000000075ac9000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 btrfs_del_leaf+0x293/0x320 fs/btrfs/ctree.c:4353
 btrfs_del_items+0x9f5/0xe20 fs/btrfs/ctree.c:4465
 btrfs_drop_extents+0x1ba8/0x2670 fs/btrfs/file.c:513
 cow_file_range_inline+0x37e/0x7c0 fs/btrfs/inode.c:471
 cow_file_range+0x987/0xd10 fs/btrfs/inode.c:1255
 btrfs_run_delalloc_range+0x593/0x1300 fs/btrfs/inode.c:2264
 writepage_delalloc+0x1a6/0x3e0 fs/btrfs/extent_io.c:1850
 __extent_writepage+0xff0/0x1540 fs/btrfs/extent_io.c:2154
 extent_write_cache_pages+0x614/0x16b0 fs/btrfs/extent_io.c:3071
 extent_writepages+0x1c6/0x450 fs/btrfs/extent_io.c:3191
 do_writepages+0x1af/0x690 mm/page-writeback.c:2581
 filemap_fdatawrite_wbc mm/filemap.c:388 [inline]
 filemap_fdatawrite_wbc+0x147/0x1b0 mm/filemap.c:378
 __filemap_fdatawrite_range+0xb8/0xf0 mm/filemap.c:421
 btrfs_fdatawrite_range+0x4a/0x110 fs/btrfs/file.c:3850
 btrfs_direct_write fs/btrfs/file.c:1603 [inline]
 btrfs_do_write_iter+0xf24/0x1470 fs/btrfs/file.c:1674
 call_write_iter include/linux/fs.h:2186 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x9ed/0xdd0 fs/read_write.c:584
 ksys_write+0x12b/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f57c5c01e19
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 00 00 90 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe4fea10a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f57c5c01e19
RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000004
RBP: 00007ffe4fea10b0 R08: 0000000000000002 R09: 00007f57c5003731
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btrfs_free_tree_block+0x266/0xc90 fs/btrfs/extent-tree.c:3281
Code: 00 48 8b 74 24 10 31 d2 4c 89 e7 e8 d4 36 17 00 31 ff 89 c6 89 44 24 10 e8 27 6e 21 fe 8b 44 24 10 85 c0 74 26 e8 6a 71 21 fe <0f> 0b e8 63 71 21 fe 48 89 ee 48 c7 c7 fa ff ff ff c6 44 24 58 01
RSP: 0018:ffffc90003a2ec30 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888078510d90 RCX: 0000000000000000
RDX: ffff88801b4a1d40 RSI: ffffffff835fe0d6 RDI: 0000000000000005
RBP: 0000000000000005 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff4 R11: 0000000000000000 R12: ffff888072cce498
R13: 1ffff92000745d8a R14: 0000000000000001 R15: ffff88801cccc000
FS:  0000555557167300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 0000000075ac9000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	28 00                	sub    %al,(%rax)
   2:	00 00                	add    %al,(%rax)
   4:	75 05                	jne    0xb
   6:	48 83 c4 28          	add    $0x28,%rsp
   a:	c3                   	retq
   b:	e8 51 14 00 00       	callq  0x1461
  10:	90                   	nop
  11:	48 89 f8             	mov    %rdi,%rax
  14:	48 89 f7             	mov    %rsi,%rdi
  17:	48 89 d6             	mov    %rdx,%rsi
  1a:	48 89 ca             	mov    %rcx,%rdx
  1d:	4d 89 c2             	mov    %r8,%r10
  20:	4d 89 c8             	mov    %r9,%r8
  23:	4c 8b 4c 24 08       	mov    0x8(%rsp),%r9
  28:	0f 05                	syscall
* 2a:	48 3d 01 f0 ff ff    	cmp    $0xfffffffffffff001,%rax <-- trapping instruction
  30:	73 01                	jae    0x33
  32:	c3                   	retq
  33:	48 c7 c1 c0 ff ff ff 	mov    $0xffffffffffffffc0,%rcx
  3a:	f7 d8                	neg    %eax
  3c:	64 89 01             	mov    %eax,%fs:(%rcx)
  3f:	48                   	rex.W