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 9A862C433F5 for ; Wed, 23 Mar 2022 19:37:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344296AbiCWTib (ORCPT ); Wed, 23 Mar 2022 15:38:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56514 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230099AbiCWTia (ORCPT ); Wed, 23 Mar 2022 15:38:30 -0400 Received: from mail-ej1-x632.google.com (mail-ej1-x632.google.com [IPv6:2a00:1450:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 076B98B6C1; Wed, 23 Mar 2022 12:36:59 -0700 (PDT) Received: by mail-ej1-x632.google.com with SMTP id d10so4907928eje.10; Wed, 23 Mar 2022 12:36:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=message-id:date:mime-version:user-agent:subject:content-language:to :references:from:in-reply-to:content-transfer-encoding; bh=v4SH+Lnf5SOPs0r5kh/xVjZFopX+qmTF8utTxWxSajc=; b=PBJvJUdAngAOoJzuadgfA7J9DAH9ZJ1gCvoxXlYvP3GC5/9AKsXE5VGBcoqVfhL5rE 3XutA6WhLX2qBA0Tx2vgPkLTLRAxf6sthyBMaCk8DZcxdo8ylqbHlq1CurNBDGd4QM0/ gaHh78FP3hz7equcogGaQ2SqcoFD4jgA3ZnIzKDrEy6OinauaDjTU3hS8nZxBMzCPqmX bxQB2cdb0BQTIGUTvbv4vBWc/+t2kueeZzQEFAaSllPlEwlDb9J3PzPxZJHRF+QVJvvM 8q4vi3RjMDd9mLFcZQ1vNeYIawWOdqZD8QIIAjWMm8vh+lHweJgywfV94s9Pm0jXqURk sRuA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:message-id:date:mime-version:user-agent:subject :content-language:to:references:from:in-reply-to :content-transfer-encoding; bh=v4SH+Lnf5SOPs0r5kh/xVjZFopX+qmTF8utTxWxSajc=; b=cvgQFXqgtVEtsnu2dgVQbtCeR7lxCbmnpBo6He/hJa4PV7Ac9OqZ++/fFlQjgkyzDu ciKdpjYSQxFX8GBgRorLA1EwDzTkXsjQIxBZLy1NYgKMPSKf+6KDLO4bpTUfwqJb5LyI sKFhXmKqN9poHZSXxNXeyHYQHZmWlpbODKtUMg4gPZvdaEUj9tKyJmC2Tb7JXwPcUx4P ea24lefyOh5AJDWLKEesPSfj9KJV0CkDyo1FOditlvEE1ai9MN394YukI509an7iDrtw 6aLhhPC8xadOnqtTRkRybRkVIImqUGRhTT3vcN+TW+R5Rvx6q5k6i27RCKgEPxyiZwZr 6nHQ== X-Gm-Message-State: AOAM530YuZOlWkYdoIXIx8UN+Qqyxg9dM+BnL3K9lfzKPrUu6Un4U2dy xJ2fR8egSs5WttdIZ+b4BjpqpsRQbIgt2w== X-Google-Smtp-Source: ABdhPJyTHjqwMW6OVmfN6EPu7c17Mx9FZdOjAuhWEI7wpbouJBkWm4bcbrms2s2raVkf0mDn5+QCRg== X-Received: by 2002:a17:907:2a53:b0:6ce:e4fe:3f92 with SMTP id fe19-20020a1709072a5300b006cee4fe3f92mr1787806ejc.389.1648064217514; Wed, 23 Mar 2022 12:36:57 -0700 (PDT) Received: from [192.168.1.114] ([85.105.239.232]) by smtp.gmail.com with ESMTPSA id n2-20020a17090673c200b006db8ec59b30sm279343ejl.136.2022.03.23.12.36.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 23 Mar 2022 12:36:56 -0700 (PDT) Message-ID: Date: Wed, 23 Mar 2022 19:35:46 +0000 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.6.0 Subject: Re: [syzbot] general protection fault in io_kill_timeouts Content-Language: en-US To: syzbot , axboe@kernel.dk, io-uring@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com References: <00000000000066cd8205dae72838@google.com> From: Pavel Begunkov In-Reply-To: <00000000000066cd8205dae72838@google.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org On 3/23/22 18:47, syzbot wrote: > syzbot has bisected this issue to: > > commit c9be622494c012d56c71e00cb90be841820c3e34 > Author: Pavel Begunkov > Date: Mon Mar 21 22:02:20 2022 +0000 > > io_uring: remove extra ifs around io_commit_cqring Already found and fixed something pretty similar #syz test: git://git.kernel.dk/linux-block for-5.18/io_uring > bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15a04739700000 > start commit: b61581ae229d Add linux-next specific files for 20220323 > git tree: linux-next > final oops: https://syzkaller.appspot.com/x/report.txt?x=17a04739700000 > console output: https://syzkaller.appspot.com/x/log.txt?x=13a04739700000 > kernel config: https://syzkaller.appspot.com/x/.config?x=def28433baf109ed > dashboard link: https://syzkaller.appspot.com/bug?extid=f252f28df734e8521387 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=117d3a43700000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15538925700000 > > Reported-by: syzbot+f252f28df734e8521387@syzkaller.appspotmail.com > Fixes: c9be622494c0 ("io_uring: remove extra ifs around io_commit_cqring") > > For information about bisection process see: https://goo.gl/tpsmEJ#bisection -- Pavel Begunkov