Oops: general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f]
CPU: 1 UID: 0 PID: 387 Comm: syz.2.17 Not tainted syzkaller #0 416431dc86fefb4bb0d8a7dace54ed1f2dd81d49
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:vfs_rename+0x1b3/0x10f0 fs/namei.c:4902
Code: c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 d5 67 f1 ff 48 8b 03 48 89 44 24 48 48 8b 44 24 30 4c 8d 70 30 4d 89 f7 49 c1 ef 03 <43> 80 3c 27 00 74 08 4c 89 f7 e8 ae 67 f1 ff 49 8b 16 4c 89 6c 24
RSP: 0018:ffffc90000e2fb80 EFLAGS: 00010203
RAX: 000000000000000f RBX: ffff8881113b68b0 RCX: 0000000000000000
RDX: ffff888114f02600 RSI: 0000000000600000 RDI: 0000000000200000
RBP: ffffc90000e2fcf0 R08: ffff8881f6f50b87 R09: 1ffff1103edea170
R10: dffffc0000000000 R11: ffffed103edea171 R12: dffffc0000000000
R13: ffff888128663600 R14: 000000000000003f R15: 0000000000000007
FS: 00007f8d5cf5d6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000c000 CR3: 0000000114c7a000 CR4: 00000000003526b0
Call Trace:
<TASK>
do_renameat2+0x7d1/0xc80 fs/namei.c:5170
__do_sys_rename fs/namei.c:5217 [inline]
__se_sys_rename fs/namei.c:5215 [inline]
__x64_sys_rename+0x86/0xa0 fs/namei.c:5215
x64_sys_call+0x150b/0x2ee0 arch/x86/include/generated/asm/syscalls_64.h:83
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x58/0xf0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x76/0x7e
RIP: 0033:0x7f8d5c18eec9
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:00007f8d5cf5d038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007f8d5c3e6180 RCX: 00007f8d5c18eec9
RDX: 0000000000000000 RSI: 00002000000000c0 RDI: 0000200000000280
RBP: 00007f8d5c211f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8d5c3e6218 R14: 00007f8d5c3e6180 R15: 00007ffe7fba9d28
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:vfs_rename+0x1b3/0x10f0 fs/namei.c:4902
Code: c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 d5 67 f1 ff 48 8b 03 48 89 44 24 48 48 8b 44 24 30 4c 8d 70 30 4d 89 f7 49 c1 ef 03 <43> 80 3c 27 00 74 08 4c 89 f7 e8 ae 67 f1 ff 49 8b 16 4c 89 6c 24
RSP: 0018:ffffc90000e2fb80 EFLAGS: 00010203
RAX: 000000000000000f RBX: ffff8881113b68b0 RCX: 0000000000000000
RDX: ffff888114f02600 RSI: 0000000000600000 RDI: 0000000000200000
RBP: ffffc90000e2fcf0 R08: ffff8881f6f50b87 R09: 1ffff1103edea170
R10: dffffc0000000000 R11: ffffed103edea171 R12: dffffc0000000000
R13: ffff888128663600 R14: 000000000000003f R15: 0000000000000007
FS: 00007f8d5cf5d6c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000000c000 CR3: 0000000114c7a000 CR4: 00000000003526b0
----------------
Code disassembly (best guess):
0: c1 e8 03 shr $0x3,%eax
3: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1)
8: 74 08 je 0x12
a: 48 89 df mov %rbx,%rdi
d: e8 d5 67 f1 ff call 0xfff167e7
12: 48 8b 03 mov (%rbx),%rax
15: 48 89 44 24 48 mov %rax,0x48(%rsp)
1a: 48 8b 44 24 30 mov 0x30(%rsp),%rax
1f: 4c 8d 70 30 lea 0x30(%rax),%r14
23: 4d 89 f7 mov %r14,%r15
26: 49 c1 ef 03 shr $0x3,%r15
* 2a: 43 80 3c 27 00 cmpb $0x0,(%r15,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 4c 89 f7 mov %r14,%rdi
34: e8 ae 67 f1 ff call 0xfff167e7
39: 49 8b 16 mov (%r14),%rdx
3c: 4c rex.WR
3d: 89 .byte 0x89
3e: 6c insb (%dx),%es:(%rdi)
3f: 24 .byte 0x24