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 74396C433F5 for ; Tue, 22 Mar 2022 23:38:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240561AbiCVXkF (ORCPT ); Tue, 22 Mar 2022 19:40:05 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39406 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S241009AbiCVXif (ORCPT ); Tue, 22 Mar 2022 19:38:35 -0400 Received: from mail-il1-f199.google.com (mail-il1-f199.google.com [209.85.166.199]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4BA076E29C for ; Tue, 22 Mar 2022 16:37:07 -0700 (PDT) Received: by mail-il1-f199.google.com with SMTP id m3-20020a056e02158300b002b6e3d1f97cso9997209ilu.19 for ; Tue, 22 Mar 2022 16:37:07 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:mime-version:date:in-reply-to:message-id:subject :from:to; bh=nxTGya4rQb08tK4gHJKHSTw3wZe8r7lubNldP0E5UM0=; b=dSoIlnjBeO8ssPLj/G/DSbsRNPdBuyN/SYX70izozZSXCXi19PsWhN200llabGlXg+ QwaNxqN4DtJQRaZ+lnhVuygSrK8J3h0J54f5oDpyluFYz0sAFBIb0XkHMRUrQclg0KWO re3O0ZVeENFgyMVuUceIJXkBbFHjohtoz+y9CnMqGtASnOl29H0q7d6WUjDAZ10xxLdZ SNEq/Tc2NfGEfJZ1TDyls/AHbLHAp1n8ZEsnvuKbka0xDppD86df3oAfsK7D+R0p3ivV JQq/7zXzHYqibtyQ8KzuElGfVgEDul2LoVGkusadxtrAPCcWscppd2Uf+dS/WHh4JBs7 DzPg== X-Gm-Message-State: AOAM530FHcBBx2ZvNsLCyeFKtslW5K4bAQ9zoh8EMykZD5q1QHgb+ScH fZch7mZwfUbgbNIc83RiakdZGS2Q5oRvYzFDgdaavLe1gy71 X-Google-Smtp-Source: ABdhPJxkBIOSGWs6S8nhxejuf9nHwhVtj7JyAqCDEH/z3FhT2iqZsZ6dhC1IxoNid3/SYYBBE6W47SN+xfAXn5CzD4+KmXXPCsmG MIME-Version: 1.0 X-Received: by 2002:a92:6012:0:b0:2bd:fb5f:d627 with SMTP id u18-20020a926012000000b002bdfb5fd627mr13275273ilb.86.1647992226627; Tue, 22 Mar 2022 16:37:06 -0700 (PDT) Date: Tue, 22 Mar 2022 16:37:06 -0700 In-Reply-To: <00000000000012e22c05dacabb11@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <00000000000042c81b05dad717e6@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in add_wait_queue From: syzbot To: asml.silence@gmail.com, axboe@kernel.dk, gregkh@linuxfoundation.org, io-uring@vger.kernel.org, jirislaby@kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org syzbot has bisected this issue to: commit 91eac1c69c202d9dad8bf717ae5b92db70bfe5cf Author: Jens Axboe Date: Wed Mar 16 22:59:10 2022 +0000 io_uring: cache poll/double-poll state with a request flag bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1280c825700000 start commit: b47d5a4f6b8d Merge tag 'audit-pr-20220321' of git://git.ke.. git tree: upstream final oops: https://syzkaller.appspot.com/x/report.txt?x=1180c825700000 console output: https://syzkaller.appspot.com/x/log.txt?x=1680c825700000 kernel config: https://syzkaller.appspot.com/x/.config?x=63af44f0631a5c3a dashboard link: https://syzkaller.appspot.com/bug?extid=950cee6d91e62329be2c syz repro: https://syzkaller.appspot.com/x/repro.syz?x=14506ddb700000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=139b2093700000 Reported-by: syzbot+950cee6d91e62329be2c@syzkaller.appspotmail.com Fixes: 91eac1c69c20 ("io_uring: cache poll/double-poll state with a request flag") For information about bisection process see: https://goo.gl/tpsmEJ#bisection