gfs2: fsid=syz:syz.s:  H: s:SH f:H e:0 p:12421 [syz.9.1541] __gfs2_lookup+0xac/0x2a0 fs/gfs2/inode.c:990
Oops: general protection fault, probably for non-canonical address 0xdffffc0008bc06c5: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000045e03628-0x0000000045e0362f]
CPU: 1 UID: 0 PID: 12430 Comm: syz.9.1541 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1403 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2201 [inline]
RIP: 0010:gfs2_dump_glock+0xe84/0x1ad0 fs/gfs2/glock.c:2319
Code: c2 80 8d d8 8b e8 1c 29 97 fd ba 20 00 00 00 48 8d bc 24 c0 00 00 00 31 f6 e8 88 4e 21 fe 4d 8d 7c 24 20 4d 89 fd 49 c1 ed 03 <43> 0f b6 44 35 00 84 c0 0f 85 84 06 00 00 41 0f b7 1f 89 de 81 e6
RSP: 0018:ffffc900043fea80 EFLAGS: 00010217
RAX: ffffc900043feb40 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000020 RSI: 0000000000000000 RDI: ffffc900043feb60
RBP: ffffc900043fed70 R08: ffffc900043feb5f R09: ffffc900043feb40
R10: dffffc0000000000 R11: fffff5200087fd6c R12: 0000000045e0360e
R13: 0000000008bc06c5 R14: dffffc0000000000 R15: 0000000045e0362e
FS:  00007fabc15026c0(0000) GS:ffff888125a28000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0f2816080 CR3: 000000007b997000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 gfs2_consist_inode_i+0xf5/0x110 fs/gfs2/util.c:346
 gfs2_dirent_scan+0x545/0x690 fs/gfs2/dir.c:-1
 gfs2_dirent_search+0x2d3/0x710 fs/gfs2/dir.c:854
 gfs2_dir_search+0x4c/0x220 fs/gfs2/dir.c:1651
 gfs2_lookupi+0x45b/0x640 fs/gfs2/inode.c:354
 __gfs2_lookup+0xac/0x2a0 fs/gfs2/inode.c:990
 __lookup_slow+0x2b7/0x410 fs/namei.c:1866
 lookup_slow+0x53/0x70 fs/namei.c:1883
 walk_component fs/namei.c:2229 [inline]
 lookup_last fs/namei.c:2730 [inline]
 path_lookupat+0x3f5/0x8c0 fs/namei.c:2754
 filename_lookup+0x256/0x5d0 fs/namei.c:2783
 kern_path+0x35/0x50 fs/namei.c:2996
 unix_find_bsd net/unix/af_unix.c:1215 [inline]
 unix_find_other+0x197/0xac0 net/unix/af_unix.c:1277
 unix_dgram_sendmsg+0x753/0x17b0 net/unix/af_unix.c:2151
 sock_sendmsg_nosec net/socket.c:727 [inline]
 __sock_sendmsg+0x21c/0x270 net/socket.c:742
 ____sys_sendmsg+0x500/0x810 net/socket.c:2592
 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2646
 __sys_sendmmsg+0x27c/0x4e0 net/socket.c:2735
 __do_sys_sendmmsg net/socket.c:2762 [inline]
 __se_sys_sendmmsg net/socket.c:2759 [inline]
 __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2759
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xe2/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fabc059acb9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fabc1502028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007fabc0816090 RCX: 00007fabc059acb9
RDX: 0000000000000001 RSI: 0000200000005a40 RDI: 0000000000000006
RBP: 00007fabc0608bf7 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fabc0816128 R14: 00007fabc0816090 R15: 00007fff24f4d338
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:pid_is_meaningful fs/gfs2/glock.c:1403 [inline]
RIP: 0010:dump_holder fs/gfs2/glock.c:2201 [inline]
RIP: 0010:gfs2_dump_glock+0xe84/0x1ad0 fs/gfs2/glock.c:2319
Code: c2 80 8d d8 8b e8 1c 29 97 fd ba 20 00 00 00 48 8d bc 24 c0 00 00 00 31 f6 e8 88 4e 21 fe 4d 8d 7c 24 20 4d 89 fd 49 c1 ed 03 <43> 0f b6 44 35 00 84 c0 0f 85 84 06 00 00 41 0f b7 1f 89 de 81 e6
RSP: 0018:ffffc900043fea80 EFLAGS: 00010217

RAX: ffffc900043feb40 RBX: 0000000000000001 RCX: 0000000000000000
RDX: 0000000000000020 RSI: 0000000000000000 RDI: ffffc900043feb60
RBP: ffffc900043fed70 R08: ffffc900043feb5f R09: ffffc900043feb40
R10: dffffc0000000000 R11: fffff5200087fd6c R12: 0000000045e0360e
R13: 0000000008bc06c5 R14: dffffc0000000000 R15: 0000000045e0362e
FS:  00007fabc15026c0(0000) GS:ffff888125a28000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb0f2816080 CR3: 000000007b997000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	c2 80 8d             	ret    $0x8d80
   3:	d8 8b e8 1c 29 97    	fmuls  -0x68d6e318(%rbx)
   9:	fd                   	std
   a:	ba 20 00 00 00       	mov    $0x20,%edx
   f:	48 8d bc 24 c0 00 00 	lea    0xc0(%rsp),%rdi
  16:	00
  17:	31 f6                	xor    %esi,%esi
  19:	e8 88 4e 21 fe       	call   0xfe214ea6
  1e:	4d 8d 7c 24 20       	lea    0x20(%r12),%r15
  23:	4d 89 fd             	mov    %r15,%r13
  26:	49 c1 ed 03          	shr    $0x3,%r13
* 2a:	43 0f b6 44 35 00    	movzbl 0x0(%r13,%r14,1),%eax <-- trapping instruction
  30:	84 c0                	test   %al,%al
  32:	0f 85 84 06 00 00    	jne    0x6bc
  38:	41 0f b7 1f          	movzwl (%r15),%ebx
  3c:	89 de                	mov    %ebx,%esi
  3e:	81                   	.byte 0x81
  3f:	e6                   	.byte 0xe6