syzbot

general protection fault, probably for non-canonical address 0xdffffc000000041a: 0000 [#1] PREEMPT SMP KASAN
KASAN: probably user-memory-access in range [0x00000000000020d0-0x00000000000020d7]
CPU: 0 PID: 5339 Comm: syz-executor173 Not tainted 6.4.0-rc3-syzkaller-00004-g421ca22e3138 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:pid_nr include/linux/pid.h:186 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2270 [inline]
RIP: 0010:gfs2_dump_glock+0xe85/0x1ad0 fs/gfs2/glock.c:2382
Code: e8 70 dd 2e fe 48 8b 1b 48 85 db 74 2e e8 43 09 d7 fd 4c 8d bb d0 00 00 00 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 30 08 00 00 45 8b 3f eb 08 e8 15 09 d7 fd
RSP: 0018:ffffc9000436f140 EFLAGS: 00010202
RAX: 000000000000041a RBX: 0000000000002001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000436f430 R08: ffffffff83b472de R09: fffffbfff206504d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807ef63b80
R13: 1ffff1100fdec774 R14: ffff88807ef63ba0 R15: 00000000000020d1
FS:  00007f00f92a7700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f010075f910 CR3: 00000000286c0000 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:465
 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:332
 __gfs2_lookup+0xa4/0x270 fs/gfs2/inode.c:888
 gfs2_atomic_open+0x9e/0x230 fs/gfs2/inode.c:1289
 atomic_open fs/namei.c:3355 [inline]
 lookup_open fs/namei.c:3463 [inline]
 open_last_lookups fs/namei.c:3560 [inline]
 path_openat+0x103c/0x3170 fs/namei.c:3788
 do_filp_open+0x234/0x490 fs/namei.c:3818
 do_sys_openat2+0x13f/0x500 fs/open.c:1356
 do_sys_open fs/open.c:1372 [inline]
 __do_sys_openat fs/open.c:1388 [inline]
 __se_sys_openat fs/open.c:1383 [inline]
 __x64_sys_openat+0x247/0x290 fs/open.c:1383
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f0100724159
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 18 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:00007f00f92a7318 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f01007b3798 RCX: 00007f0100724159
RDX: 0000000000000000 RSI: 0000000020000180 RDI: 00000000ffffff9c
RBP: 00007f01007b3790 R08: 00007f00f92a7700 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 00007ffd22ca6a7f R14: 00007f00f92a7400 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pid_nr include/linux/pid.h:186 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2270 [inline]
RIP: 0010:gfs2_dump_glock+0xe85/0x1ad0 fs/gfs2/glock.c:2382
Code: e8 70 dd 2e fe 48 8b 1b 48 85 db 74 2e e8 43 09 d7 fd 4c 8d bb d0 00 00 00 4c 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 30 08 00 00 45 8b 3f eb 08 e8 15 09 d7 fd
RSP: 0018:ffffc9000436f140 EFLAGS: 00010202
RAX: 000000000000041a RBX: 0000000000002001 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000436f430 R08: ffffffff83b472de R09: fffffbfff206504d
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807ef63b80
R13: 1ffff1100fdec774 R14: ffff88807ef63ba0 R15: 00000000000020d1
FS:  00007f00f92a7700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f00f92a7000 CR3: 00000000286c0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	e8 70 dd 2e fe       	callq  0xfe2edd75
   5:	48 8b 1b             	mov    (%rbx),%rbx
   8:	48 85 db             	test   %rbx,%rbx
   b:	74 2e                	je     0x3b
   d:	e8 43 09 d7 fd       	callq  0xfdd70955
  12:	4c 8d bb d0 00 00 00 	lea    0xd0(%rbx),%r15
  19:	4c 89 f8             	mov    %r15,%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 30 08 00 00    	jne    0x866
  36:	45 8b 3f             	mov    (%r15),%r15d
  39:	eb 08                	jmp    0x43
  3b:	e8 15 09 d7 fd       	callq  0xfdd70955