Oops: general protection fault, probably for non-canonical address 0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 UID: 0 PID: 387 Comm: syz.2.17 Not tainted syzkaller #0 0044b833cf02edb59ee897eae4c42c13324c9de7
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__d_entry_type include/linux/dcache.h:414 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:419 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:465 [inline]
RIP: 0010:d_is_positive include/linux/dcache.h:475 [inline]
RIP: 0010:security_path_rename+0x95/0x2a0 security/security.c:2021
Code: 00 44 8b 2b 44 89 ee 81 e6 00 02 00 00 31 db 31 ff e8 ff 8b 15 ff 41 81 e5 00 02 00 00 0f 85 cd 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 e4 00 00 00 41 8b 1e 89 de 81 e6 00 00
RSP: 0018:ffffc9000119fcf0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8881158c1300 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000119fd30 R08: 0000000000000000 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000233f24 R12: ffff8881106cc110
R13: 0000000000000000 R14: 0000000000000010 R15: dffffc0000000000
FS: 00007f2c042496c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c04249d58 CR3: 0000000128aec000 CR4: 00000000003526b0
Call Trace:
<TASK>
do_renameat2+0x634/0xc40 fs/namei.c:5165
__do_sys_rename fs/namei.c:5225 [inline]
__se_sys_rename fs/namei.c:5223 [inline]
__x64_sys_rename+0x86/0xa0 fs/namei.c:5223
x64_sys_call+0x150b/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:83
do_syscall_x64 arch/x86/entry/common.c:47 [inline]
do_syscall_64+0x57/0xf0 arch/x86/entry/common.c:78
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f2c0339aeb9
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:00007f2c04249028 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f2c03616180 RCX: 00007f2c0339aeb9
RDX: 0000000000000000 RSI: 0000200000000140 RDI: 0000200000000100
RBP: 00007f2c03408c1f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2c03616218 R14: 00007f2c03616180 R15: 00007ffee5b30f88
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__d_entry_type include/linux/dcache.h:414 [inline]
RIP: 0010:d_is_miss include/linux/dcache.h:419 [inline]
RIP: 0010:d_is_negative include/linux/dcache.h:465 [inline]
RIP: 0010:d_is_positive include/linux/dcache.h:475 [inline]
RIP: 0010:security_path_rename+0x95/0x2a0 security/security.c:2021
Code: 00 44 8b 2b 44 89 ee 81 e6 00 02 00 00 31 db 31 ff e8 ff 8b 15 ff 41 81 e5 00 02 00 00 0f 85 cd 00 00 00 4c 89 f0 48 c1 e8 03 <42> 0f b6 04 38 84 c0 0f 85 e4 00 00 00 41 8b 1e 89 de 81 e6 00 00
RSP: 0018:ffffc9000119fcf0 EFLAGS: 00010202
RAX: 0000000000000002 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff8881158c1300 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc9000119fd30 R08: 0000000000000000 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000233f24 R12: ffff8881106cc110
R13: 0000000000000000 R14: 0000000000000010 R15: dffffc0000000000
FS: 00007f2c042496c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c033e8600 CR3: 0000000128aec000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: 00 44 8b 2b add %al,0x2b(%rbx,%rcx,4)
4: 44 89 ee mov %r13d,%esi
7: 81 e6 00 02 00 00 and $0x200,%esi
d: 31 db xor %ebx,%ebx
f: 31 ff xor %edi,%edi
11: e8 ff 8b 15 ff call 0xff158c15
16: 41 81 e5 00 02 00 00 and $0x200,%r13d
1d: 0f 85 cd 00 00 00 jne 0xf0
23: 4c 89 f0 mov %r14,%rax
26: 48 c1 e8 03 shr $0x3,%rax
* 2a: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 e4 00 00 00 jne 0x11b
37: 41 8b 1e mov (%r14),%ebx
3a: 89 de mov %ebx,%esi
3c: 81 .byte 0x81
3d: e6 00 out %al,$0x0