general protection fault, probably for non-canonical address 0xdffffc0000000041: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000208-0x000000000000020f]
CPU: 1 PID: 3727 Comm: kworker/u4:7 Not tainted 6.1.0-rc8-syzkaller-00275-g1f55ee6d0901 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Workqueue: btrfs-qgroup-rescan btrfs_work_helper
RIP: 0010:start_transaction+0x48/0x10f0
Code: 48 89 fb 48 bd 00 00 00 00 00 fc ff df e8 50 85 0a fe 48 89 5c 24 30 48 81 c3 08 02 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 60 <80> 3c 28 00 74 08 48 89 df e8 6a 82 5c fe 48 89 5c 24 50 48 8b 03
RSP: 0018:ffffc900042af888 EFLAGS: 00010206
RAX: 0000000000000041 RBX: 0000000000000208 RCX: ffff88802186ba80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000001 R09: fffff52000855f19
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000003
R13: 0000000000000001 R14: 0000000000000001 R15: ffff888047b6b370
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f635d16fd58 CR3: 000000007c1fc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_qgroup_rescan_worker+0x1642/0x1a80
 btrfs_work_helper+0x451/0xe80
 process_one_work+0x960/0x13d0
 worker_thread+0xa5f/0x1210
 kthread+0x268/0x300
 ret_from_fork+0x1f/0x30
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:start_transaction+0x48/0x10f0
Code: 48 89 fb 48 bd 00 00 00 00 00 fc ff df e8 50 85 0a fe 48 89 5c 24 30 48 81 c3 08 02 00 00 48 89 d8 48 c1 e8 03 48 89 44 24 60 <80> 3c 28 00 74 08 48 89 df e8 6a 82 5c fe 48 89 5c 24 50 48 8b 03
RSP: 0018:ffffc900042af888 EFLAGS: 00010206
RAX: 0000000000000041 RBX: 0000000000000208 RCX: ffff88802186ba80
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: 0000000000000001 R09: fffff52000855f19
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000003
R13: 0000000000000001 R14: 0000000000000001 R15: ffff888047b6b370
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb1305fe000 CR3: 000000000ca8e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 89 fb             	mov    %rdi,%rbx
   3:	48 bd 00 00 00 00 00 	movabs $0xdffffc0000000000,%rbp
   a:	fc ff df
   d:	e8 50 85 0a fe       	call   0xfe0a8562
  12:	48 89 5c 24 30       	mov    %rbx,0x30(%rsp)
  17:	48 81 c3 08 02 00 00 	add    $0x208,%rbx
  1e:	48 89 d8             	mov    %rbx,%rax
  21:	48 c1 e8 03          	shr    $0x3,%rax
  25:	48 89 44 24 60       	mov    %rax,0x60(%rsp)
* 2a:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	48 89 df             	mov    %rbx,%rdi
  33:	e8 6a 82 5c fe       	call   0xfe5c82a2
  38:	48 89 5c 24 50       	mov    %rbx,0x50(%rsp)
  3d:	48 8b 03             	mov    (%rbx),%rax
