general protection fault, probably for non-canonical address 0xdffffc0000000097: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000004b8-0x00000000000004bf]
CPU: 1 PID: 53 Comm: kworker/1:1H Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022
Workqueue: glock_workqueue glock_work_func
RIP: 0010:is_system_glock fs/gfs2/glock.c:720 [inline]
RIP: 0010:do_xmote+0xd10/0x10a0 fs/gfs2/glock.c:828
Code: 00 48 03 5d 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 3f 8e 29 fe bd b8 04 00 00 48 03 2b 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 21 8e 29 fe 4c 39 65 00 74 3b 48
RSP: 0018:ffffc90000be7b68 EFLAGS: 00010202
RAX: 0000000000000097 RBX: ffff88801702c718 RCX: ffff8880180e0000
RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000000000000
RBP: 00000000000004b8 R08: ffffffff83b05d1a R09: ffffed1002e05816
R10: ffffed1002e05816 R11: 1ffff11002e05815 R12: ffff88807d8c64f8
R13: ffff88801702c000 R14: dffffc0000000000 R15: ffff88807b321ab8
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556ce4aaf6c0 CR3: 000000007c354000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 glock_work_func+0x2c2/0x450 fs/gfs2/glock.c:1059
 process_one_work+0x877/0xdb0 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:is_system_glock fs/gfs2/glock.c:720 [inline]
RIP: 0010:do_xmote+0xd10/0x10a0 fs/gfs2/glock.c:828
Code: 00 48 03 5d 00 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 3f 8e 29 fe bd b8 04 00 00 48 03 2b 48 89 e8 48 c1 e8 03 <42> 80 3c 30 00 74 08 48 89 ef e8 21 8e 29 fe 4c 39 65 00 74 3b 48
RSP: 0018:ffffc90000be7b68 EFLAGS: 00010202
RAX: 0000000000000097 RBX: ffff88801702c718 RCX: ffff8880180e0000
RDX: 0000000000000000 RSI: 0000000000004000 RDI: 0000000000000000
RBP: 00000000000004b8 R08: ffffffff83b05d1a R09: ffffed1002e05816
R10: ffffed1002e05816 R11: 1ffff11002e05815 R12: ffff88807d8c64f8
R13: ffff88801702c000 R14: dffffc0000000000 R15: ffff88807b321ab8
FS:  0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000556ce4aaf6c0 CR3: 0000000039cd5000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 48 03             	add    %cl,0x3(%rax)
   3:	5d                   	pop    %rbp
   4:	00 48 89             	add    %cl,-0x77(%rax)
   7:	d8 48 c1             	fmuls  -0x3f(%rax)
   a:	e8 03 42 80 3c       	callq  0x3c804212
   f:	30 00                	xor    %al,(%rax)
  11:	74 08                	je     0x1b
  13:	48 89 df             	mov    %rbx,%rdi
  16:	e8 3f 8e 29 fe       	callq  0xfe298e5a
  1b:	bd b8 04 00 00       	mov    $0x4b8,%ebp
  20:	48 03 2b             	add    (%rbx),%rbp
  23:	48 89 e8             	mov    %rbp,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 ef             	mov    %rbp,%rdi
  34:	e8 21 8e 29 fe       	callq  0xfe298e5a
  39:	4c 39 65 00          	cmp    %r12,0x0(%rbp)
  3d:	74 3b                	je     0x7a
  3f:	48                   	rex.W