gfs2: fsid=syz:syz.0:  H: s:?? f:c e:-1 p:0 [(none)] 0xffffffffffffffff
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: 5767 Comm: syz-executor.1 Not tainted 6.2.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1437 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2262 [inline]
RIP: 0010:gfs2_dump_glock+0xd9c/0x1ae0 fs/gfs2/glock.c:2376
Code: 17 b4 c8 0a 01 48 c7 c7 40 9a 3c 8b be fe 02 00 00 48 c7 c2 80 9a 3c 8b e8 31 a9 b1 fd 90 4d 8d 6c 24 20 4d 89 ee 49 c1 ee 03 <43> 0f b6 04 3e 84 c0 0f 85 45 07 00 00 41 0f b7 5d 00 89 de 81 e6
RSP: 0018:ffffc9000bb676c0 EFLAGS: 00010202
RAX: ffffffff83b9bb1f RBX: ffff88801c5108d0 RCX: 0000000000040000
RDX: ffffc90004281000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000bb679a8 R08: dffffc0000000000 R09: fffffbfff20fc231
R10: fffffbfff20fc231 R11: 1ffffffff20fc230 R12: 0000000000000000
R13: 0000000000000020 R14: 0000000000000004 R15: dffffc0000000000
FS:  00007fe565398700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3262a000 CR3: 0000000022c9c000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 gfs2_consist_inode_i+0xf3/0x110 fs/gfs2/util.c:465
 gfs2_dirent_scan+0x535/0x650 fs/gfs2/dir.c:602
 gfs2_dir_read+0x824/0x1b20 fs/gfs2/dir.c:1599
 gfs2_readdir+0x135/0x190 fs/gfs2/file.c:115
 iterate_dir+0x257/0x5f0
 __do_sys_getdents fs/readdir.c:286 [inline]
 __se_sys_getdents+0x1db/0x4d0 fs/readdir.c:271
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe56468c0a9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe565398168 EFLAGS: 00000246 ORIG_RAX: 000000000000004e
RAX: ffffffffffffffda RBX: 00007fe5647abf80 RCX: 00007fe56468c0a9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007fe5646e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd83805caf R14: 00007fe565398300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1437 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2262 [inline]
RIP: 0010:gfs2_dump_glock+0xd9c/0x1ae0 fs/gfs2/glock.c:2376
Code: 17 b4 c8 0a 01 48 c7 c7 40 9a 3c 8b be fe 02 00 00 48 c7 c2 80 9a 3c 8b e8 31 a9 b1 fd 90 4d 8d 6c 24 20 4d 89 ee 49 c1 ee 03 <43> 0f b6 04 3e 84 c0 0f 85 45 07 00 00 41 0f b7 5d 00 89 de 81 e6
RSP: 0018:ffffc9000bb676c0 EFLAGS: 00010202
RAX: ffffffff83b9bb1f RBX: ffff88801c5108d0 RCX: 0000000000040000
RDX: ffffc90004281000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc9000bb679a8 R08: dffffc0000000000 R09: fffffbfff20fc231
R10: fffffbfff20fc231 R11: 1ffffffff20fc230 R12: 0000000000000000
R13: 0000000000000020 R14: 0000000000000004 R15: dffffc0000000000
FS:  00007fe565398700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff9e3ba4000 CR3: 0000000022c9c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	b4 c8                	mov    $0xc8,%ah
   2:	0a 01                	or     (%rcx),%al
   4:	48 c7 c7 40 9a 3c 8b 	mov    $0xffffffff8b3c9a40,%rdi
   b:	be fe 02 00 00       	mov    $0x2fe,%esi
  10:	48 c7 c2 80 9a 3c 8b 	mov    $0xffffffff8b3c9a80,%rdx
  17:	e8 31 a9 b1 fd       	callq  0xfdb1a94d
  1c:	90                   	nop
  1d:	4d 8d 6c 24 20       	lea    0x20(%r12),%r13
  22:	4d 89 ee             	mov    %r13,%r14
  25:	49 c1 ee 03          	shr    $0x3,%r14
* 29:	43 0f b6 04 3e       	movzbl (%r14,%r15,1),%eax <-- trapping instruction
  2e:	84 c0                	test   %al,%al
  30:	0f 85 45 07 00 00    	jne    0x77b
  36:	41 0f b7 5d 00       	movzwl 0x0(%r13),%ebx
  3b:	89 de                	mov    %ebx,%esi
  3d:	81                   	.byte 0x81
  3e:	e6                   	.byte 0xe6