gfs2: fsid=syz:syz.0: H: s:?? f:EcHWs e:-5632 p:0 [(none)] 0xffffea000120d400
Oops: general protection fault, probably for non-canonical address 0xdffffc002000004e: 0000 [#1] SMP KASAN NOPTI
KASAN: probably user-memory-access in range [0x0000000100000270-0x0000000100000277]
CPU: 0 UID: 0 PID: 8725 Comm: syz.4.603 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:string_nocheck lib/vsprintf.c:653 [inline]
RIP: 0010:string+0x1bb/0x2b0 lib/vsprintf.c:735
Code: 56 e3 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:ffffc9000bec6860 EFLAGS: 00010017
RAX: 000000002000004e RBX: 00000000fffffffe RCX: dffffc0000000000
RDX: ffff8880250f3c80 RSI: 00000000ffff0a00 RDI: 0000000100000277
RBP: ffffffff8bb16bde R08: ffff8880250f3c80 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000002 R12: 0000000100000277
R13: 0000000000000000 R14: ffffc9000bec6c72 R15: 0000000000000030
FS: 00007f8b1d3d86c0(0000) GS:ffff88812613d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31117ff8 CR3: 0000000067467000 CR4: 0000000000350ef0
Call Trace:
<TASK>
vsnprintf+0x739/0xf00 lib/vsprintf.c:2926
va_format lib/vsprintf.c:1728 [inline]
pointer+0x940/0x1190 lib/vsprintf.c:2548
vsnprintf+0x60f/0xf00 lib/vsprintf.c:2930
vprintk_store+0x3c7/0xd00 kernel/printk/printk.c:2252
vprintk_emit+0x15f/0x590 kernel/printk/printk.c:2399
_printk+0xcf/0x120 kernel/printk/printk.c:2448
gfs2_print_dbg+0x19a/0x1b0 fs/gfs2/glock.c:1444
dump_holder fs/gfs2/glock.c:2287 [inline]
gfs2_dump_glock+0x152d/0x1bc0 fs/gfs2/glock.c:2398
gfs2_consist_inode_i+0xf5/0x110 fs/gfs2/util.c:446
gfs2_dirent_scan+0x545/0x690 fs/gfs2/dir.c:-1
gfs2_dirent_search+0x2cb/0x710 fs/gfs2/dir.c:854
gfs2_dir_search+0x4c/0x220 fs/gfs2/dir.c:1651
gfs2_lookupi+0x3d9/0x5a0 fs/gfs2/inode.c:340
__gfs2_lookup+0x8f/0x270 fs/gfs2/inode.c:975
__lookup_slow+0x297/0x3d0 fs/namei.c:1816
lookup_slow+0x53/0x70 fs/namei.c:1833
walk_component+0x2d2/0x400 fs/namei.c:2151
lookup_last fs/namei.c:2652 [inline]
path_lookupat+0x163/0x430 fs/namei.c:2676
filename_lookup+0x212/0x570 fs/namei.c:2705
filename_setxattr+0xb6/0x600 fs/xattr.c:660
path_setxattrat+0x364/0x3a0 fs/xattr.c:713
__do_sys_lsetxattr fs/xattr.c:754 [inline]
__se_sys_lsetxattr fs/xattr.c:750 [inline]
__x64_sys_lsetxattr+0xbf/0xe0 fs/xattr.c:750
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8b1c58f6c9
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:00007f8b1d3d8038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bd
RAX: ffffffffffffffda RBX: 00007f8b1c7e5fa0 RCX: 00007f8b1c58f6c9
RDX: 00002000000001c0 RSI: 00002000000000c0 RDI: 0000200000000140
RBP: 00007f8b1c611f91 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000fe37 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8b1c7e6038 R14: 00007f8b1c7e5fa0 R15: 00007fff08194ca8
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:string_nocheck lib/vsprintf.c:653 [inline]
RIP: 0010:string+0x1bb/0x2b0 lib/vsprintf.c:735
Code: 56 e3 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:ffffc9000bec6860 EFLAGS: 00010017
RAX: 000000002000004e RBX: 00000000fffffffe RCX: dffffc0000000000
RDX: ffff8880250f3c80 RSI: 00000000ffff0a00 RDI: 0000000100000277
RBP: ffffffff8bb16bde R08: ffff8880250f3c80 R09: 0000000000000008
R10: 0000000000000007 R11: 0000000000000002 R12: 0000000100000277
R13: 0000000000000000 R14: ffffc9000bec6c72 R15: 0000000000000030
FS: 00007f8b1d3d86c0(0000) GS:ffff88812613d000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b31117ff8 CR3: 0000000067467000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
0: 56 push %rsi
1: e3 f6 jrcxz 0xfffffff9
3: eb b3 jmp 0xffffffb8
5: 41 c1 fd 10 sar $0x10,%r13d
9: 4c 89 6c 24 10 mov %r13,0x10(%rsp)
e: 49 8d 5d ff lea -0x1(%r13),%rbx
12: 45 31 ed xor %r13d,%r13d
15: 4b 8d 3c 2c lea (%r12,%r13,1),%rdi
19: 48 89 f8 mov %rdi,%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: 75 60 jne 0x92
32: 4b 8d 2c 2e lea (%r14,%r13,1),%rbp
36: 47 0f b6 3c 2c movzbl (%r12,%r13,1),%r15d
3b: 31 ff xor %edi,%edi
3d: 44 89 fe mov %r15d,%esi