Oops: general protection fault, probably for non-canonical address 0xdffffc0000000420: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x0000000000002100-0x0000000000002107]
CPU: 1 UID: 0 PID: 14029 Comm: syz.1.2226 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:pid_nr include/linux/pid.h:183 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2295 [inline]
RIP: 0010:gfs2_dump_glock+0x10fe/0x1c50 fs/gfs2/glock.c:2413
Code: e8 f7 a1 2e fe 4c 8b 3b 4d 85 ff 74 33 e8 da 51 cb fd 49 8d 9f 00 01 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 fa 06 00 00 48 63 03 48 89 44 24 10 eb 0e
RSP: 0018:ffffc900037e6f00 EFLAGS: 00010202
RAX: 0000000000000420 RBX: 0000000000002101 RCX: dffffc0000000000
RDX: ffffc9000d18b000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900037e71f0 R08: 0000000000000000 R09: ffffffff83f45dd3
R10: dffffc0000000000 R11: fffffbfff1f454e7 R12: ffffffff83f45dd3
R13: ffff888029209e00 R14: 1ffff110052413c4 R15: 0000000000002001
FS:  00007feed361d6c0(0000) GS:ffff888125ce3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3cb24d4fbc CR3: 0000000052e38000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 gfs2_consist_inode_i+0xf5/0x110 fs/gfs2/util.c:448
 gfs2_dirent_scan+0x545/0x690 fs/gfs2/dir.c:-1
 gfs2_dirent_search+0x2e0/0x7e0 fs/gfs2/dir.c:854
 gfs2_dir_search+0x4c/0x220 fs/gfs2/dir.c:1651
 gfs2_lookupi+0x3d9/0x5a0 fs/gfs2/inode.c:340
 __gfs2_lookup+0x8f/0x270 fs/gfs2/inode.c:975
 __lookup_slow+0x294/0x3d0 fs/namei.c:1808
 lookup_slow+0x53/0x70 fs/namei.c:1825
 walk_component fs/namei.c:2129 [inline]
 link_path_walk+0x935/0xea0 fs/namei.c:2497
 path_lookupat+0x97/0x430 fs/namei.c:2653
 do_o_path+0x97/0x1f0 fs/namei.c:4017
 path_openat+0x311f/0x3830 fs/namei.c:4039
 do_filp_open+0x1fa/0x410 fs/namei.c:4073
 do_sys_openat2+0x121/0x1c0 fs/open.c:1435
 do_sys_open fs/open.c:1450 [inline]
 __do_sys_openat fs/open.c:1466 [inline]
 __se_sys_openat fs/open.c:1461 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1461
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7feed278e9a9
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:00007feed361d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007feed29b6160 RCX: 00007feed278e9a9
RDX: 0000000000200002 RSI: 00002000000000c0 RDI: ffffffffffffff9c
RBP: 00007feed2810d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007feed29b6160 R15: 00007fffaa088f48
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pid_nr include/linux/pid.h:183 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2295 [inline]
RIP: 0010:gfs2_dump_glock+0x10fe/0x1c50 fs/gfs2/glock.c:2413
Code: e8 f7 a1 2e fe 4c 8b 3b 4d 85 ff 74 33 e8 da 51 cb fd 49 8d 9f 00 01 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 fa 06 00 00 48 63 03 48 89 44 24 10 eb 0e
RSP: 0018:ffffc900037e6f00 EFLAGS: 00010202
RAX: 0000000000000420 RBX: 0000000000002101 RCX: dffffc0000000000
RDX: ffffc9000d18b000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc900037e71f0 R08: 0000000000000000 R09: ffffffff83f45dd3
R10: dffffc0000000000 R11: fffffbfff1f454e7 R12: ffffffff83f45dd3
R13: ffff888029209e00 R14: 1ffff110052413c4 R15: 0000000000002001
FS:  00007feed361d6c0(0000) GS:ffff888125ce3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3cb24d4fbc CR3: 0000000052e38000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
   0:	e8 f7 a1 2e fe       	call   0xfe2ea1fc
   5:	4c 8b 3b             	mov    (%rbx),%r15
   8:	4d 85 ff             	test   %r15,%r15
   b:	74 33                	je     0x40
   d:	e8 da 51 cb fd       	call   0xfdcb51ec
  12:	49 8d 9f 00 01 00 00 	lea    0x100(%r15),%rbx
  19:	48 89 d8             	mov    %rbx,%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 fa 06 00 00    	jne    0x730
  36:	48 63 03             	movslq (%rbx),%rax
  39:	48 89 44 24 10       	mov    %rax,0x10(%rsp)
  3e:	eb 0e                	jmp    0x4e