general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
CPU: 0 PID: 14439 Comm: syz-executor.0 Not tainted 6.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1457 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2254 [inline]
RIP: 0010:gfs2_dump_glock+0xf05/0x1ba0 fs/gfs2/glock.c:2370
Code: c6 05 fb 25 2a 0b 01 48 c7 c7 80 d3 ad 8b be ed 02 00 00 48 c7 c2 c0 d3 ad 8b e8 26 ee ab fd 4d 8d 75 20 4d 89 f7 49 c1 ef 03 <43> 0f b6 04 27 84 c0 0f 85 b6 06 00 00 41 0f b7 1e 89 de 81 e6 00
RSP: 0018:ffffc900040c7260 EFLAGS: 00010202
RAX: ffffffff83c19592 RBX: 0000000000000001 RCX: 0000000000040000
RDX: ffffc90004c11000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc900040c7550 R08: ffffffff83c1957b R09: 1ffffffff21bb06c
R10: dffffc0000000000 R11: fffffbfff21bb06d R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000021 R15: 0000000000000004
FS:  00007ff3d2bfb6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffea97d3f98 CR3: 000000006d1ed000 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:456
 gfs2_dirent_scan+0x512/0x640 fs/gfs2/dir.c:602
 gfs2_dirent_search+0x30e/0x8c0 fs/gfs2/dir.c:850
 gfs2_dir_search+0xb2/0x2f0 fs/gfs2/dir.c:1650
 gfs2_lookupi+0x460/0x5d0 fs/gfs2/inode.c:340
 __gfs2_lookup+0xa4/0x270 fs/gfs2/inode.c:896
 __lookup_slow+0x282/0x3e0 fs/namei.c:1694
 lookup_slow+0x53/0x70 fs/namei.c:1711
 walk_component+0x2d0/0x400 fs/namei.c:2002
 lookup_last fs/namei.c:2459 [inline]
 path_lookupat+0x16f/0x450 fs/namei.c:2483
 filename_lookup+0x255/0x610 fs/namei.c:2512
 user_path_at_empty+0x42/0x60 fs/namei.c:2911
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3674 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount+0x29a/0x3c0 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7ff3d1e7cd29
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:00007ff3d2bfb0c8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff3d1fac050 RCX: 00007ff3d1e7cd29
RDX: 00000000200000c0 RSI: 0000000020000080 RDI: 0000000020000000
RBP: 00007ff3d1ec947a R08: 0000000020000300 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007ff3d1fac050 R15: 00007ffd0286a508
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1457 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2254 [inline]
RIP: 0010:gfs2_dump_glock+0xf05/0x1ba0 fs/gfs2/glock.c:2370
Code: c6 05 fb 25 2a 0b 01 48 c7 c7 80 d3 ad 8b be ed 02 00 00 48 c7 c2 c0 d3 ad 8b e8 26 ee ab fd 4d 8d 75 20 4d 89 f7 49 c1 ef 03 <43> 0f b6 04 27 84 c0 0f 85 b6 06 00 00 41 0f b7 1e 89 de 81 e6 00
RSP: 0018:ffffc900040c7260 EFLAGS: 00010202
RAX: ffffffff83c19592 RBX: 0000000000000001 RCX: 0000000000040000
RDX: ffffc90004c11000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc900040c7550 R08: ffffffff83c1957b R09: 1ffffffff21bb06c
R10: dffffc0000000000 R11: fffffbfff21bb06d R12: dffffc0000000000
R13: 0000000000000001 R14: 0000000000000021 R15: 0000000000000004
FS:  00007ff3d2bfb6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffea97d3f98 CR3: 000000006d1ed000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	c6 05 fb 25 2a 0b 01 	movb   $0x1,0xb2a25fb(%rip)        # 0xb2a2602
   7:	48 c7 c7 80 d3 ad 8b 	mov    $0xffffffff8badd380,%rdi
   e:	be ed 02 00 00       	mov    $0x2ed,%esi
  13:	48 c7 c2 c0 d3 ad 8b 	mov    $0xffffffff8badd3c0,%rdx
  1a:	e8 26 ee ab fd       	call   0xfdabee45
  1f:	4d 8d 75 20          	lea    0x20(%r13),%r14
  23:	4d 89 f7             	mov    %r14,%r15
  26:	49 c1 ef 03          	shr    $0x3,%r15
* 2a:	43 0f b6 04 27       	movzbl (%r15,%r12,1),%eax <-- trapping instruction
  2f:	84 c0                	test   %al,%al
  31:	0f 85 b6 06 00 00    	jne    0x6ed
  37:	41 0f b7 1e          	movzwl (%r14),%ebx
  3b:	89 de                	mov    %ebx,%esi
  3d:	81                   	.byte 0x81
  3e:	e6 00                	out    %al,$0x0