Oops: general protection fault, probably for non-canonical address 0xdffffc018b64162f: 0000 [#1] SMP KASAN PTI
KASAN: probably user-memory-access in range [0x0000000c5b20b178-0x0000000c5b20b17f]
CPU: 1 UID: 0 PID: 7156 Comm: syz.4.178 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:smk_of_inode security/smack/smack.h:392 [inline]
RIP: 0010:smack_inode_permission+0x271/0x320 security/smack/smack_lsm.c:1217
Code: 03 80 3c 18 00 74 08 4c 89 ff e8 8a 3e ed fd 48 63 1d 8f ee c7 08 49 03 1f 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 61 3e ed fd 48 8b 3b 44 89 f6 48 8d
RSP: 0018:ffffc90003f876e0 EFLAGS: 00010202
RAX: 000000018b64162f RBX: 0000000c5b20b178 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90003f87738
RBP: ffffc90003f877f8 R08: ffffc90003f87767 R09: 0000000000000000
R10: ffffc90003f87740 R11: fffff520007f0eed R12: 1ffff920007f0ee0
R13: ffffc90003f87720 R14: 0000000000000001 R15: ffff88805d95dc38
FS: 00007f4b791066c0(0000) GS:ffff888126ef9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f079eb41000 CR3: 0000000066dea000 CR4: 00000000003526f0
Call Trace:
<TASK>
security_inode_permission+0xf8/0x310 security/security.c:2363
may_lookup fs/namei.c:1873 [inline]
link_path_walk+0x851/0xea0 fs/namei.c:2467
path_openat+0x298/0x3840 fs/namei.c:4130
do_filp_open+0x1fa/0x410 fs/namei.c:4161
do_sys_openat2+0x121/0x1c0 fs/open.c:1437
do_sys_open fs/open.c:1452 [inline]
__do_sys_openat fs/open.c:1468 [inline]
__se_sys_openat fs/open.c:1463 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1463
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: 0033:0x7f4b7ae9efc9
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:00007f4b79106038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f4b7b0f5fa0 RCX: 00007f4b7ae9efc9
RDX: 0000000000000000 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f4b7af21f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4b7b0f6038 R14: 00007f4b7b0f5fa0 R15: 00007fff3e073d48
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:smk_of_inode security/smack/smack.h:392 [inline]
RIP: 0010:smack_inode_permission+0x271/0x320 security/smack/smack_lsm.c:1217
Code: 03 80 3c 18 00 74 08 4c 89 ff e8 8a 3e ed fd 48 63 1d 8f ee c7 08 49 03 1f 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 61 3e ed fd 48 8b 3b 44 89 f6 48 8d
RSP: 0018:ffffc90003f876e0 EFLAGS: 00010202
RAX: 000000018b64162f RBX: 0000000c5b20b178 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90003f87738
RBP: ffffc90003f877f8 R08: ffffc90003f87767 R09: 0000000000000000
R10: ffffc90003f87740 R11: fffff520007f0eed R12: 1ffff920007f0ee0
R13: ffffc90003f87720 R14: 0000000000000001 R15: ffff88805d95dc38
FS: 00007f4b791066c0(0000) GS:ffff888126ef9000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f079eb41000 CR3: 0000000066dea000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 03 80 3c 18 00 74 add 0x7400183c(%rax),%eax
6: 08 4c 89 ff or %cl,-0x1(%rcx,%rcx,4)
a: e8 8a 3e ed fd call 0xfded3e99
f: 48 63 1d 8f ee c7 08 movslq 0x8c7ee8f(%rip),%rbx # 0x8c7eea5
16: 49 03 1f add (%r15),%rbx
19: 48 89 d8 mov %rbx,%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: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) <-- trapping instruction
2e: 74 08 je 0x38
30: 48 89 df mov %rbx,%rdi
33: e8 61 3e ed fd call 0xfded3e99
38: 48 8b 3b mov (%rbx),%rdi
3b: 44 89 f6 mov %r14d,%esi
3e: 48 rex.W
3f: 8d .byte 0x8d