Oops: general protection fault, probably for non-canonical address 0xdffffc0000000004: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027]
CPU: 0 UID: 0 PID: 8581 Comm: syz.3.593 Not tainted 6.12.0-rc6-syzkaller-00279-gde2f378f2b77 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1483 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2317 [inline]
RIP: 0010:gfs2_dump_glock+0xf05/0x1bb0 fs/gfs2/glock.c:2433
Code: c6 05 50 a0 21 0c 01 48 c7 c7 20 5f 4f 8c be 53 03 00 00 48 c7 c2 60 5f 4f 8c e8 c6 a3 8b 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:ffffc900047e7140 EFLAGS: 00010212
RAX: ffffffff83e50a32 RBX: 0000000000000001 RCX: ffff888026ae1e00
RDX: 0000000000000000 RSI: ffffffff8c610980 RDI: ffffffff8c610940
RBP: ffffc900047e7430 R08: ffffffff83e50a1b R09: 1ffffffff2859b00
R10: dffffc0000000000 R11: fffffbfff2859b01 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000020 R15: 0000000000000004
FS:  00007f3eaffee6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000200011c0 CR3: 00000000578ca000 CR4: 0000000000350ef0
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:3455 [inline]
 lookup_open fs/namei.c:3566 [inline]
 open_last_lookups fs/namei.c:3694 [inline]
 path_openat+0x101d/0x3590 fs/namei.c:3930
 do_filp_open+0x235/0x490 fs/namei.c:3960
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_openat fs/open.c:1446 [inline]
 __se_sys_openat fs/open.c:1441 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1441
 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: 0033:0x7f3eaf17e719
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:00007f3eaffee038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f3eaf335f80 RCX: 00007f3eaf17e719
RDX: 0000000000044402 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 00007f3eaf1f139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f3eaf335f80 R15: 00007ffcaead71c8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1483 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2317 [inline]
RIP: 0010:gfs2_dump_glock+0xf05/0x1bb0 fs/gfs2/glock.c:2433
Code: c6 05 50 a0 21 0c 01 48 c7 c7 20 5f 4f 8c be 53 03 00 00 48 c7 c2 60 5f 4f 8c e8 c6 a3 8b 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:ffffc900047e7140 EFLAGS: 00010212
RAX: ffffffff83e50a32 RBX: 0000000000000001 RCX: ffff888026ae1e00
RDX: 0000000000000000 RSI: ffffffff8c610980 RDI: ffffffff8c610940
RBP: ffffc900047e7430 R08: ffffffff83e50a1b R09: 1ffffffff2859b00
R10: dffffc0000000000 R11: fffffbfff2859b01 R12: dffffc0000000000
R13: 0000000000000000 R14: 0000000000000020 R15: 0000000000000004
FS:  00007f3eaffee6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b314f9ff8 CR3: 00000000578ca000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	c6 05 50 a0 21 0c 01 	movb   $0x1,0xc21a050(%rip)        # 0xc21a057
   7:	48 c7 c7 20 5f 4f 8c 	mov    $0xffffffff8c4f5f20,%rdi
   e:	be 53 03 00 00       	mov    $0x353,%esi
  13:	48 c7 c2 60 5f 4f 8c 	mov    $0xffffffff8c4f5f60,%rdx
  1a:	e8 c6 a3 8b fd       	call   0xfd8ba3e5
  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