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 X-Spam-Level: X-Spam-Status: No, score=-8.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FSL_HELO_FAKE,INCLUDES_PATCH,MAILING_LIST_MULTI, MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id EEAF6C49ED9 for ; Thu, 12 Sep 2019 08:35:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C20BF208C2 for ; Thu, 12 Sep 2019 08:35:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1568277310; bh=CPS/sk/QHOK1iKj+qOwe1f0GydqmyAObzk/dN3l19po=; h=Date:From:To:Cc:Subject:List-ID:From; b=Ay+2PjoYGexDgliPQOcjxeMsUCM1H0fv95yyDEOlsXcnrau2ECveQdco56rWSZQ/S x4noeZj46yOwk6YRUU7cmjKUexKoYeVi47eSiW4kUZ5FLuIpKSr1rsTcL6kFVuOHAE Q/52YtZvtf25OtNGZlsMUxiwt9ds487mr7iWpMA4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730331AbfILIfJ (ORCPT ); Thu, 12 Sep 2019 04:35:09 -0400 Received: from mail-wm1-f67.google.com ([209.85.128.67]:51367 "EHLO mail-wm1-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726952AbfILIfJ (ORCPT ); Thu, 12 Sep 2019 04:35:09 -0400 Received: by mail-wm1-f67.google.com with SMTP id 7so6435116wme.1 for ; Thu, 12 Sep 2019 01:35:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=sender:date:from:to:cc:subject:message-id:mime-version :content-disposition:user-agent; bh=wbjx38cx9pM0sFcrLnBM6olZjRYMq3cjSn3rES6QPTM=; b=KkEOnVJG6W4Qa0nJAcsLtTpRg6DzCln8FoVNfJU1wBC/1QixEuEX6euFSSOl9Su1QP 80FxXu+Ea13m72qxVi+5WszrFV0Jx20AwTGVbrsgTAX3CH3QCaTo/vUf6WZgRfregN/A BkVVWfqEipy+GR/ZKD4rHFDUbWMzDtjSd66v9l7KNE5XTTS0LTbxPOnYvKcnCaGltPh5 0daXKBNs5KrKQleuZQhLi0oMZ/2nTSuM2ftr4dPJF1Z7dSdoDO+p3z6RkmSWuBrfNgsv Ep3Rnc7hq9VFTN4ziqVXhfGNR2MDrI2UU4dKNQe1n/GXe+qcHQN9OWa41cIhDR+XHJae i+NQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:sender:date:from:to:cc:subject:message-id :mime-version:content-disposition:user-agent; bh=wbjx38cx9pM0sFcrLnBM6olZjRYMq3cjSn3rES6QPTM=; b=DhbfvXYQh55mFywmLq37KfLj+RPgAVjZqtm4ZnM9NKKANi8BSzDHQbNvVr+E9ZKfvE KYdwwBzlCJY1QnZ93dTwtXZW5H88UYveMmrxTyTTfU9iq/JQw0sMdP8giDnhu+u14SuF mLAl8VfyNlFUVeveZOAH10kmDIg4sf2r8AGOGyIkwXJX7vXRFsue0d9ib8mfL/CD8RQ5 ZuGyZ0/LOV3jFG7E/g2R8Zxlj+QRqC9DGZ2lsrPDPRwaMC7Sl/6A5Z4vkttnG0GqA3nx mePZWxSeonbrqhc+9uWt6ebdicbCtZ6H067nCVVbOzufSMc3IIONSP5OaT0xhf4KBmTg 0SIw== X-Gm-Message-State: APjAAAUPFbNuqA25LYQCjjfMekWjGG48Hl1HOmLhX5UsbBTuEThpquo0 GYoVETV+Ded1HJFXftga+7Q= X-Google-Smtp-Source: APXvYqxb7l5t0Q7F2RMblVg2TwZDR8XaEoiOiwK4hzzSUlLvy6u+NrwB+nDkoGIezXdumYgLD8zBcw== X-Received: by 2002:a1c:7c15:: with SMTP id x21mr7921798wmc.154.1568277305871; Thu, 12 Sep 2019 01:35:05 -0700 (PDT) Received: from gmail.com (2E8B0CD5.catv.pool.telekom.hu. [46.139.12.213]) by smtp.gmail.com with ESMTPSA id r13sm759108wrn.0.2019.09.12.01.35.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 12 Sep 2019 01:35:05 -0700 (PDT) Date: Thu, 12 Sep 2019 10:35:03 +0200 From: Ingo Molnar To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Thomas Gleixner , Peter Zijlstra , Andrew Morton Subject: [GIT PULL] IRQ fix Message-ID: <20190912083503.GA124477@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.10.1 (2018-07-13) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus, Please pull the latest irq-urgent-for-linus git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq-urgent-for-linus # HEAD: eddf3e9c7c7e4d0707c68d1bb22cc6ec8aef7d4a genirq: Prevent NULL pointer dereference in resend_irqs() Fix a race in the IRQ resend mechanism, which can result in a NULL dereference crash. Thanks, Ingo ------------------> Yunfeng Ye (1): genirq: Prevent NULL pointer dereference in resend_irqs() kernel/irq/resend.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/kernel/irq/resend.c b/kernel/irq/resend.c index 95414ad3506a..98c04ca5fa43 100644 --- a/kernel/irq/resend.c +++ b/kernel/irq/resend.c @@ -36,6 +36,8 @@ static void resend_irqs(unsigned long arg) irq = find_first_bit(irqs_resend, nr_irqs); clear_bit(irq, irqs_resend); desc = irq_to_desc(irq); + if (!desc) + continue; local_irq_disable(); desc->handle_irq(desc); local_irq_enable();