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 9D870C4332F for ; Tue, 20 Dec 2022 19:37:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233364AbiLTThV (ORCPT ); Tue, 20 Dec 2022 14:37:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60296 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229906AbiLTThT (ORCPT ); Tue, 20 Dec 2022 14:37:19 -0500 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9758B5FD8 for ; Tue, 20 Dec 2022 11:37:18 -0800 (PST) Received: by mail-il1-f200.google.com with SMTP id s1-20020a056e021a0100b003026adad6a9so8917348ild.18 for ; Tue, 20 Dec 2022 11:37:18 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=Xtf3kK/4JkO5DVd4qOuGUgyJBsIREUJl3kcqk4Bwjr4=; b=7AfwPY6C1SK4sRTiSbI4GfpHDe+2zDo8FXpjySCLblHcL+C/unyYfS71SGLcNMVsWJ iJl/LqhiH1ibHcAr4pXdP5xTjW2kfuRzXCFtC4UVC3XsyEmtoJA1iXodOYmwhT3Iai3n a050ZteXyRLz/PqB0PWZHMPn1sYxASgNuHzEM6+CGRHd4xiN2kwKNq3efAJQwvTwRqQy ChQq9a2F9mUIznS5mWGK8YuO3Qot9emGmzk8wmlBfQpPhNXv2DSCXPLs9Tf9oOYwx5R/ OJ/jvJvebcx3IOdjcS3H2jmbCff/7kfMfbs1TLYyEqOtWgAXZnoyeoiuzKkZDObF6h/d phCg== X-Gm-Message-State: ANoB5png8xZ9yEjbBBxgRegvtBuLm2J9eMugjdkvL9HiUu/nYG+roK+I toYkorxxaeZv+LOjpb8UXPyyYZs8slWfBdHcUNgiJinh9f2g X-Google-Smtp-Source: AA0mqf79LM6cuQfmZgkg9I2E8BaJp2XadINP9woNrMjfuuHwCStlay7Ncmm1QjAAXXiaNN1Z3ZOaFyHazaxPHao1vnryZURMltfR MIME-Version: 1.0 X-Received: by 2002:a92:d8ca:0:b0:303:6b79:14bb with SMTP id l10-20020a92d8ca000000b003036b7914bbmr11203430ilo.9.1671565038025; Tue, 20 Dec 2022 11:37:18 -0800 (PST) Date: Tue, 20 Dec 2022 11:37:18 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000004f881505f047903b@google.com> Subject: Re: [syzbot] KASAN: use-after-free Read in put_pmu_ctx From: syzbot To: acme@kernel.org, alexander.shishkin@linux.intel.com, bpf@vger.kernel.org, jolsa@kernel.org, linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, mark.rutland@arm.com, mingo@redhat.com, namhyung@kernel.org, netdev@vger.kernel.org, peterz@infradead.org, sdf@google.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org Hello, syzbot has tested the proposed patch but the reproducer is still triggering an issue: INFO: rcu detected stall in corrupted rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { P5778 } 2673 jiffies s: 2773 root: 0x0/T rcu: blocking rcu_node structures (internal RCU debug): Tested on: commit: 13e3c779 Merge tag 'for-netdev' of https://git.kernel... git tree: https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net.git console output: https://syzkaller.appspot.com/x/log.txt?x=12cb0e5d880000 kernel config: https://syzkaller.appspot.com/x/.config?x=b0e91ad4b5f69c47 dashboard link: https://syzkaller.appspot.com/bug?extid=b8e8c01c8ade4fe6e48f compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 patch: https://syzkaller.appspot.com/x/patch.diff?x=12df6a9b880000