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=-3.8 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=no 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 9E335C432C0 for ; Tue, 3 Dec 2019 18:35:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6989120637 for ; Tue, 3 Dec 2019 18:35:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=cmpxchg-org.20150623.gappssmtp.com header.i=@cmpxchg-org.20150623.gappssmtp.com header.b="eFpGufSM" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727225AbfLCSfi (ORCPT ); Tue, 3 Dec 2019 13:35:38 -0500 Received: from mail-qt1-f176.google.com ([209.85.160.176]:39942 "EHLO mail-qt1-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726640AbfLCSfi (ORCPT ); Tue, 3 Dec 2019 13:35:38 -0500 Received: by mail-qt1-f176.google.com with SMTP id z22so4795508qto.7 for ; Tue, 03 Dec 2019 10:35:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cmpxchg-org.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=+mPpij2urIiFa+tGhxc3F5vXjgowsH5MsfLmE//ET0E=; b=eFpGufSMKcL/mX8THLDgjTjkvYdjrL0SOxx35M3oj/ID7pJCebwdLuGxRFePfkOdQU RCBFNo566AUXmwLq4NN7B7bw+/+W0PHUsSkKc0IeVkFS/f/LwrS50YG69BiPUsuoLKpG SOE0wIqaJiYLkA38FJOLzoOeEpl6741La82mEof938Pzv7Ce23/jC2peDKJT81j4wXx1 xb0PlElEt7xjnN3y6aZykLmHZlAyNBkQrDIb49Guq15kRL3/eCxfqCCr1S48IZ2FLSFG +3ae8zefxFsSgSjK02+w4zbuMWK572aCBvOCHqRV3BumGeATgp72K53qJFKkGEbSlmyd BA+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=+mPpij2urIiFa+tGhxc3F5vXjgowsH5MsfLmE//ET0E=; b=QToSNUxKPqIAzkZgg3VZoeXcDzlYAskQVexFLk1/Psjk+zFkPXDj7XkoWKtr4KWfCL ERtn4OgJl1f1ed0k6TeQCmmyEBVWSBida8d7puOdYjZq7BBfNTb1A5eNnhOUZQ1oVcb/ MNJ3zSUBGXGmFBWuaHrDxFHcLIK9CEuifQ5TeIFSAML4y2qzmupieZthdCN8GFc4WFdv cR0s/nef5uJNNa0KbDeNmPBW7mIsucBTrcbRBiq0poDD46XA0yyNtUwWNsTH8zvCE1Xm im5nCm5U/I0GszyIdk5rbk/ISt/LQWK4B3UvdhkX+3WmnhxlVoGTcIvEhVvlw51q3GUh pTpw== X-Gm-Message-State: APjAAAUPGsoniNCO2VCMnUS2rYhm0r0CWfCVWc8wGDjMK8NIjiYtE7cG CuZEA674Decr5r+/p329x2+uwA== X-Google-Smtp-Source: APXvYqyVLo1MCokVY2fKXLO30tW+QSUcrD93wzVwb6SzRrl2LVaIhJkSsPCvZcpBlad5+BJaDYruRQ== X-Received: by 2002:ac8:173c:: with SMTP id w57mr6544619qtj.39.1575398134049; Tue, 03 Dec 2019 10:35:34 -0800 (PST) Received: from localhost ([2620:10d:c091:500::3:cbfe]) by smtp.gmail.com with ESMTPSA id q187sm2251776qkd.92.2019.12.03.10.35.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Dec 2019 10:35:33 -0800 (PST) From: Johannes Weiner To: Peter Zijlstra Cc: Jingfeng Xie , Suren Baghdasaryan , linux-kernel@vger.kernel.org Subject: [PATCH 0/2] psi: two division fixes Date: Tue, 3 Dec 2019 13:35:22 -0500 Message-Id: <20191203183524.41378-1-hannes@cmpxchg.org> X-Mailer: git-send-email 2.24.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Peter, here is a patch that should fix the rare div0 crashes reported by Jingfeng, and a second patch for a div32-with-64-bit-divisor issue spotted during code review. Can you please take a look and route them through the scheduler tree? Thanks! kernel/sched/psi.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)