Re: [syzbot] [crypto?] general protection fault in __aria_aesni_avx_gfni_crypt_16way
From: Herbert Xu
Date: Mon May 15 2023 - 02:05:54 EST
On Sun, May 14, 2023 at 08:09:50PM -0700, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: 31f4104e392a Merge tag 'locking_urgent_for_v6.4_rc2' of gi..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=11768616280000
> kernel config: https://syzkaller.appspot.com/x/.config?x=8bc832f563d8bf38
> dashboard link: https://syzkaller.appspot.com/bug?extid=a6abcf08bad8b18fd198
> compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
> userspace arch: i386
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1737e3be280000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=149d4c06280000
...
> ----------------
> Code disassembly (best guess):
> 0: d0 10 rclb (%rax)
> 2: c4 e2 69 00 d7 vpshufb %xmm7,%xmm2,%xmm2
> 7: c5 11 ef ea vpxor %xmm2,%xmm13,%xmm13
> b: c5 e9 72 d0 08 vpsrld $0x8,%xmm0,%xmm2
> 10: c4 e2 69 00 d7 vpshufb %xmm7,%xmm2,%xmm2
> 15: c5 09 ef f2 vpxor %xmm2,%xmm14,%xmm14
> 19: c4 e2 79 00 d7 vpshufb %xmm7,%xmm0,%xmm2
> 1e: c5 01 ef fa vpxor %xmm2,%xmm15,%xmm15
> 22: c5 f9 6f 05 7a 15 c9 vmovdqa 0xac9157a(%rip),%xmm0 # 0xac915a4
> 29: 0a
> * 2a: c5 f9 6f 0d 6a 15 c9 vmovdqa 0xac9156a(%rip),%xmm1 # 0xac9159c <-- trapping instruction
> 31: 0a
> 32: c5 f9 6f 15 7a 15 c9 vmovdqa 0xac9157a(%rip),%xmm2 # 0xac915b4
> 39: 0a
> 3a: c5 .byte 0xc5
> 3b: f9 stc
> 3c: 6f outsl %ds:(%rsi),(%dx)
> 3d: 1d .byte 0x1d
> 3e: 52 push %rdx
> 3f: 15 .byte 0x15
Ard, this looks like something that you recently touched. Any
ideas what might be causing this?
Thanks,
--
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt