Oops: general protection fault, probably for non-canonical address 0xdffffc000000002c: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000160-0x0000000000000167]
CPU: 1 UID: 0 PID: 8250 Comm: syz.4.299 Not tainted 6.11.0-rc6-syzkaller-00048-gc7fb1692dc01 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:pid_nr include/linux/pid.h:179 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2318 [inline]
RIP: 0010:gfs2_dump_glock+0xfba/0x1bb0 fs/gfs2/glock.c:2430
Code: e8 3b b7 1b fe 48 8b 1b 48 85 db 74 2f e8 7e 95 b7 fd 4c 8d a3 e0 00 00 00 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 dc 07 00 00 45 8b 24 24 eb 08 e8 4f 95 b7
RSP: 0018:ffffc9000343f140 EFLAGS: 00010202
RAX: 000000000000002c RBX: 0000000000000080 RCX: dffffc0000000000
RDX: ffffc90008fca000 RSI: 000000000002e5bb RDI: 000000000002e5bc
RBP: ffffc9000343f430 R08: ffffffff83dbf665 R09: 1ffffffff27f4d08
R10: dffffc0000000000 R11: fffffbfff27f4d09 R12: 0000000000000160
R13: ffff88802e3abc00 R14: ffff88802e3abc20 R15: 1ffff11005c75784
FS:  00007fdc2a14e6c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f112e259ce2 CR3: 000000006c646000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_consist_inode_i+0xf5/0x110 fs/gfs2/util.c:457
 gfs2_dirent_scan+0x52b/0x670
 gfs2_dirent_search+0x30e/0x8c0 fs/gfs2/dir.c:853
 gfs2_dir_search+0xb2/0x2f0 fs/gfs2/dir.c:1653
 gfs2_lookupi+0x461/0x5e0 fs/gfs2/inode.c:340
 __gfs2_lookup+0xa4/0x280 fs/gfs2/inode.c:896
 gfs2_atomic_open+0x9e/0x230 fs/gfs2/inode.c:1297
 atomic_open fs/namei.c:3441 [inline]
 lookup_open fs/namei.c:3549 [inline]
 open_last_lookups fs/namei.c:3647 [inline]
 path_openat+0xe8d/0x3470 fs/namei.c:3883
 do_filp_open+0x235/0x490 fs/namei.c:3913
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_open fs/open.c:1439 [inline]
 __se_sys_open fs/open.c:1435 [inline]
 __x64_sys_open+0x225/0x270 fs/open.c:1435
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fdc2937cef9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdc2a14e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fdc29536058 RCX: 00007fdc2937cef9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200005c0
RBP: 00007fdc293ef01e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fdc29536058 R15: 00007ffe8a2862d8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pid_nr include/linux/pid.h:179 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2318 [inline]
RIP: 0010:gfs2_dump_glock+0xfba/0x1bb0 fs/gfs2/glock.c:2430
Code: e8 3b b7 1b fe 48 8b 1b 48 85 db 74 2f e8 7e 95 b7 fd 4c 8d a3 e0 00 00 00 4c 89 e0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 dc 07 00 00 45 8b 24 24 eb 08 e8 4f 95 b7
RSP: 0018:ffffc9000343f140 EFLAGS: 00010202
RAX: 000000000000002c RBX: 0000000000000080 RCX: dffffc0000000000
RDX: ffffc90008fca000 RSI: 000000000002e5bb RDI: 000000000002e5bc
RBP: ffffc9000343f430 R08: ffffffff83dbf665 R09: 1ffffffff27f4d08
R10: dffffc0000000000 R11: fffffbfff27f4d09 R12: 0000000000000160
R13: ffff88802e3abc00 R14: ffff88802e3abc20 R15: 1ffff11005c75784
FS:  00007fdc2a14e6c0(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f13975fef98 CR3: 000000006c646000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e8 3b b7 1b fe       	call   0xfe1bb740
   5:	48 8b 1b             	mov    (%rbx),%rbx
   8:	48 85 db             	test   %rbx,%rbx
   b:	74 2f                	je     0x3c
   d:	e8 7e 95 b7 fd       	call   0xfdb79590
  12:	4c 8d a3 e0 00 00 00 	lea    0xe0(%rbx),%r12
  19:	4c 89 e0             	mov    %r12,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 dc 07 00 00    	jne    0x812
  36:	45 8b 24 24          	mov    (%r12),%r12d
  3a:	eb 08                	jmp    0x44
  3c:	e8                   	.byte 0xe8
  3d:	4f 95                	rex.WRXB xchg %rax,%r13
  3f:	b7                   	.byte 0xb7