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 5B08BC4332F for ; Tue, 20 Dec 2022 08:43:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232979AbiLTInh (ORCPT ); Tue, 20 Dec 2022 03:43:37 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:49978 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232561AbiLTIn2 (ORCPT ); Tue, 20 Dec 2022 03:43:28 -0500 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 60063E9F for ; Tue, 20 Dec 2022 00:43:26 -0800 (PST) Received: by mail-il1-f197.google.com with SMTP id i14-20020a056e020d8e00b003034b93bd07so8025889ilj.14 for ; Tue, 20 Dec 2022 00:43:26 -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=77qvNoQqle0MfKLDQMi01YZLkngrkg9aZffzgWoC0vY=; b=hbMQCo/+2UXX4GzwE5HO/70TINJC6Wuu7n+HiX+FrcZ1c71+wqvcuwF5gqlWFq2vED 8v+92jyUd+gdLppz4U2kIR8jZ3W2WoiSP8IOPPxLqV3Y976P8wvxkcznFP6th2psdXF8 j2GF44tvfXkOWcqWeHIFkYJmnKYIA6ilZ5XJCw6O2fJiWCOTd1vwl5/r2AjypPW0Y4yq YvLdVXUEHiI4qtUqVmhDTw5B78iG8JOTPcNwSYEqcxKnRj80iZ3pQfeF4/w5kNN+tpwX S0m6hYcSTsvud3rOvWopR6GcOvQqKFC3vrWLNXfKy++JzszvrZYRxgm/g1VGCEjuk9vB wC+A== X-Gm-Message-State: ANoB5pkWDVL3looMl+YQvbwHGHz9CVv/YEKWf3LKwq8O/vxQ4zRqOPiF 8lw7WqTHAmEkLN+5AiuoxOzSwR1ioaxrbmgHeUg6P7tPAHMd X-Google-Smtp-Source: AA0mqf4KHT2PjH0rudr1knR4xY3Cueu+ZSBoGTVC3IgyDsnWzkduYtWlNbZNuj+1lcG9wQRkygZ76sBT0PKeMjXcG8DlWn7Oafxq MIME-Version: 1.0 X-Received: by 2002:a05:6e02:216a:b0:303:129a:8157 with SMTP id s10-20020a056e02216a00b00303129a8157mr28409262ilv.38.1671525805458; Tue, 20 Dec 2022 00:43:25 -0800 (PST) Date: Tue, 20 Dec 2022 00:43:25 -0800 In-Reply-To: X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000de0f0b05f03e6d9b@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, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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: { P5791 } 2673 jiffies s: 2805 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=121ea2e8480000 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=12d4ad4f880000