From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2E534C77B7D for ; Mon, 15 May 2023 06:05:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239345AbjEOGFw (ORCPT ); Mon, 15 May 2023 02:05:52 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38984 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S238536AbjEOGFT (ORCPT ); Mon, 15 May 2023 02:05:19 -0400 Received: from 167-179-156-38.a7b39c.syd.nbn.aussiebb.net (167-179-156-38.a7b39c.syd.nbn.aussiebb.net [167.179.156.38]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id E578D49D9; Sun, 14 May 2023 22:57:56 -0700 (PDT) Received: from loth.rohan.me.apana.org.au ([192.168.167.2]) by formenos.hmeau.com with smtp (Exim 4.94.2 #2 (Debian)) id 1pyRCi-0092NQ-2h; Mon, 15 May 2023 13:57:05 +0800 Received: by loth.rohan.me.apana.org.au (sSMTP sendmail emulation); Mon, 15 May 2023 13:57:04 +0800 Date: Mon, 15 May 2023 13:57:04 +0800 From: Herbert Xu To: syzbot , Ard Biesheuvel , Taehee Yoo Cc: bp@alien8.de, dave.hansen@linux.intel.com, davem@davemloft.net, hpa@zytor.com, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, mingo@redhat.com, syzkaller-bugs@googlegroups.com, tglx@linutronix.de, x86@kernel.org Subject: Re: [syzbot] [crypto?] general protection fault in __aria_aesni_avx_gfni_crypt_16way Message-ID: References: <0000000000007fa2d705fb29f046@google.com> <000000000000b2cbe305fbb2c9d9@google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <000000000000b2cbe305fbb2c9d9@google.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt