BTRFS warning (device loop4): direct IO failed ino 263 op 0x8801 offset 0x4000 len 4096 err no 9
general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067]
CPU: 1 PID: 5186 Comm: syz-executor.4 Not tainted 6.4.0-rc7-syzkaller-00203-g17b17fcd6d44 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:btrfs_finish_ordered_extent+0x43/0x3c0
Code: 4c 24 10 48 89 54 24 08 48 89 74 24 18 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 08 91 fb fd 49 8d 6e 60 49 89 ec 49 c1 ec 03 <41> 80 3c 1c 00 74 08 48 89 ef e8 4e 69 53 fe 4c 8b 7d 00 49 8d 9f
RSP: 0018:ffffc9000421f458 EFLAGS: 00010206
RAX: ffffffff838fee98 RBX: dffffc0000000000 RCX: ffff888077a99dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000060 R08: 0000000000000000 R09: ffffffff838c2bb7
R10: 0000000000000003 R11: ffff888077a99dc0 R12: 000000000000000c
R13: 0000000000001000 R14: 0000000000000000 R15: ffff88802a3c5300
FS:  00007f8bc55fe6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000560e1b315dc0 CR3: 000000002c541000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_dio_end_io+0x171/0x470
 iomap_dio_bio_iter+0xe15/0x1430
 __iomap_dio_rw+0x12c3/0x22e0
 btrfs_dio_write+0xb6/0x100
 btrfs_do_write_iter+0x617/0x1050
 do_iter_write+0x7b1/0xcb0
 do_pwritev+0x21a/0x360
 do_syscall_64+0x41/0xc0
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8bc627cbe9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8bc55fe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000148
RAX: ffffffffffffffda RBX: 00007f8bc639bf80 RCX: 00007f8bc627cbe9
RDX: 0000000000000002 RSI: 0000000020000240 RDI: 0000000000000005
RBP: 00007f8bc55fe120 R08: 0000000000000000 R09: 0000000000000008
R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007f8bc639bf80 R15: 00007ffd8cf283e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btrfs_finish_ordered_extent+0x43/0x3c0
Code: 4c 24 10 48 89 54 24 08 48 89 74 24 18 49 89 fe 48 bb 00 00 00 00 00 fc ff df e8 08 91 fb fd 49 8d 6e 60 49 89 ec 49 c1 ec 03 <41> 80 3c 1c 00 74 08 48 89 ef e8 4e 69 53 fe 4c 8b 7d 00 49 8d 9f
RSP: 0018:ffffc9000421f458 EFLAGS: 00010206

RAX: ffffffff838fee98 RBX: dffffc0000000000 RCX: ffff888077a99dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000060 R08: 0000000000000000 R09: ffffffff838c2bb7
R10: 0000000000000003 R11: ffff888077a99dc0 R12: 000000000000000c
R13: 0000000000001000 R14: 0000000000000000 R15: ffff88802a3c5300
FS:  00007f8bc55fe6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faa1ba67000 CR3: 000000002c541000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	4c 24 10             	rex.WR and $0x10,%al
   3:	48 89 54 24 08       	mov    %rdx,0x8(%rsp)
   8:	48 89 74 24 18       	mov    %rsi,0x18(%rsp)
   d:	49 89 fe             	mov    %rdi,%r14
  10:	48 bb 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbx
  17:	fc ff df
  1a:	e8 08 91 fb fd       	call   0xfdfb9127
  1f:	49 8d 6e 60          	lea    0x60(%r14),%rbp
  23:	49 89 ec             	mov    %rbp,%r12
  26:	49 c1 ec 03          	shr    $0x3,%r12
* 2a:	41 80 3c 1c 00       	cmpb   $0x0,(%r12,%rbx,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 ef             	mov    %rbp,%rdi
  34:	e8 4e 69 53 fe       	call   0xfe536987
  39:	4c 8b 7d 00          	mov    0x0(%rbp),%r15
  3d:	49                   	rex.WB
  3e:	8d                   	.byte 0x8d
  3f:	9f                   	lahf
