gfs2: fsid=syz:syz.s:  H: s:SH f:H e:0 p:6481 [syz.0.20] __gfs2_lookup+0x8f/0x270 fs/gfs2/inode.c:990
gfs2: fsid=syz:syz.s:  H: s:SH f: e:0 p:6481 [syz.0.20] __gfs2_lookup+0x8f/0x270 fs/gfs2/inode.c:990
Oops: general protection fault, probably for non-canonical address 0xe7697c1177bc5d6c: 0000 [#1] SMP KASAN PTI
KASAN: maybe wild-memory-access in range [0x3b4c008bbde2eb60-0x3b4c008bbde2eb67]
CPU: 1 UID: 0 PID: 6484 Comm: syz.0.20 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:string_nocheck lib/vsprintf.c:655 [inline]
RIP: 0010:string+0x1bb/0x2b0 lib/vsprintf.c:737
Code: 9b ce f6 eb b3 41 c1 fd 10 4c 89 6c 24 10 49 8d 5d ff 45 31 ed 4b 8d 3c 2c 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 60 4b 8d 2c 2e 47 0f b6 3c 2c 31 ff 44 89 fe
RSP: 0018:ffffc90003376f00 EFLAGS: 00010007
RAX: 0769801177bc5d6c RBX: 00000000fffffffe RCX: dffffc0000000000
RDX: ffff88807fa71e80 RSI: 00000000ffff0a00 RDI: 3b4c008bbde2eb67
RBP: ffffffff8bd29a9e R08: ffff88807fa71e80 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000000 R12: 3b4c008bbde2eb67
R13: 0000000000000000 R14: ffffc9000337731a R15: 0000000000000030
FS:  00007f2e2e7c06c0(0000) GS:ffff888125d25000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2e2e7bff98 CR3: 000000007b612000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 vsnprintf+0x739/0xee0 lib/vsprintf.c:2948
 va_format lib/vsprintf.c:1723 [inline]
 pointer+0x93f/0x1170 lib/vsprintf.c:2569
 vsnprintf+0x614/0xee0 lib/vsprintf.c:2952
 vprintk_store+0x3c7/0xd00 kernel/printk/printk.c:2255
 vprintk_emit+0x1b8/0x5f0 kernel/printk/printk.c:2402
 _printk+0xcf/0x120 kernel/printk/printk.c:2451
 gfs2_print_dbg+0x19a/0x1b0 fs/gfs2/glock.c:1376
 dump_holder fs/gfs2/glock.c:2209 [inline]
 gfs2_dump_glock+0x1357/0x19c0 fs/gfs2/glock.c:2318
 gfs2_consist_inode_i+0xf5/0x110 fs/gfs2/util.c:346
 gfs2_dirent_scan+0x545/0x690 fs/gfs2/dir.c:-1
 gfs2_dir_read+0x804/0x16f0 fs/gfs2/dir.c:1600
 gfs2_readdir+0x14c/0x1b0 fs/gfs2/file.c:116
 iterate_dir+0x399/0x570 fs/readdir.c:108
 __do_sys_getdents64 fs/readdir.c:410 [inline]
 __se_sys_getdents64+0xe4/0x260 fs/readdir.c:396
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2e2d98eba9
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:00007f2e2e7c0038 EFLAGS: 00000246 ORIG_RAX: 00000000000000d9
RAX: ffffffffffffffda RBX: 00007f2e2dbd6090 RCX: 00007f2e2d98eba9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 00007f2e2da11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2e2dbd6128 R14: 00007f2e2dbd6090 R15: 00007ffe945ae6e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:string_nocheck lib/vsprintf.c:655 [inline]
RIP: 0010:string+0x1bb/0x2b0 lib/vsprintf.c:737
Code: 9b ce f6 eb b3 41 c1 fd 10 4c 89 6c 24 10 49 8d 5d ff 45 31 ed 4b 8d 3c 2c 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 75 60 4b 8d 2c 2e 47 0f b6 3c 2c 31 ff 44 89 fe
RSP: 0018:ffffc90003376f00 EFLAGS: 00010007
RAX: 0769801177bc5d6c RBX: 00000000fffffffe RCX: dffffc0000000000
RDX: ffff88807fa71e80 RSI: 00000000ffff0a00 RDI: 3b4c008bbde2eb67
RBP: ffffffff8bd29a9e R08: ffff88807fa71e80 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000000 R12: 3b4c008bbde2eb67
R13: 0000000000000000 R14: ffffc9000337731a R15: 0000000000000030
FS:  00007f2e2e7c06c0(0000) GS:ffff888125d25000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2e2e7bff98 CR3: 000000007b612000 CR4: 00000000003526f0
----------------
Code disassembly (best guess), 2 bytes skipped:
   0:	f6 eb                	imul   %bl
   2:	b3 41                	mov    $0x41,%bl
   4:	c1 fd 10             	sar    $0x10,%ebp
   7:	4c 89 6c 24 10       	mov    %r13,0x10(%rsp)
   c:	49 8d 5d ff          	lea    -0x1(%r13),%rbx
  10:	45 31 ed             	xor    %r13d,%r13d
  13:	4b 8d 3c 2c          	lea    (%r12,%r13,1),%rdi
  17:	48 89 f8             	mov    %rdi,%rax
  1a:	48 c1 e8 03          	shr    $0x3,%rax
  1e:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  25:	fc ff df
* 28:	0f b6 04 08          	movzbl (%rax,%rcx,1),%eax <-- trapping instruction
  2c:	84 c0                	test   %al,%al
  2e:	75 60                	jne    0x90
  30:	4b 8d 2c 2e          	lea    (%r14,%r13,1),%rbp
  34:	47 0f b6 3c 2c       	movzbl (%r12,%r13,1),%r15d
  39:	31 ff                	xor    %edi,%edi
  3b:	44 89 fe             	mov    %r15d,%esi