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=-14.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,INCLUDES_PATCH,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS 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 9DB86C48BDF for ; Thu, 24 Jun 2021 07:01:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7AF1A613CC for ; Thu, 24 Jun 2021 07:01:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231204AbhFXHEE (ORCPT ); Thu, 24 Jun 2021 03:04:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55036 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229454AbhFXHED (ORCPT ); Thu, 24 Jun 2021 03:04:03 -0400 Received: from mail-wr1-x435.google.com (mail-wr1-x435.google.com [IPv6:2a00:1450:4864:20::435]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 256EDC061574 for ; Thu, 24 Jun 2021 00:01:44 -0700 (PDT) Received: by mail-wr1-x435.google.com with SMTP id u11so5331675wrw.11 for ; Thu, 24 Jun 2021 00:01:44 -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; bh=EgO67Pnmg9AtuDmDWSJXP2ZOfMDcMUcqSHysYLnU+/U=; b=gJYV/iWbi6Wx8eEFq8OSgrasnD58puCGQCn5YgbOXIzBeeJHaqCG7oYBjVLScdUtMX FtH69/tggL1etaGvlFVOc6r6jixbplL5s/B4Hc8r+svK67QgOH7wtDm2HG1LFwjWk1gD zzyDkIvpZiU79AWZHy3NHdxBpnlwKqewxlXS7rvztRo+KjrYghYon2KnRzCcxkryFHRh HZTbgPSouYQKX/44JyCwLBTc4YN4pgldyKI1veIRcF296utlBlFhZA3sJ/8dlS2mXoZd YJje2zJC+842HYynNWZ7PcJKQq/kL8L49WjNSiJs1fELNpV0DlqMpqfpvblIxM/yC9NC C3aQ== 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; bh=EgO67Pnmg9AtuDmDWSJXP2ZOfMDcMUcqSHysYLnU+/U=; b=ndZnZx5GsyTbAIOdPXyKQrnXRpZ2Gr8PV1lVA1bLZPwLceQL2TWTsPFIqTQZPsUwh1 c4AVc6YEJlniQmfEZI6i+Bj9mAaE/wPykTDq/d7Ta4qdcABNrCXcXTjyYcAWIiHEXftK 23WSXiNWHFjRTxd4JGwd2aW3jDFl2YjEd1ZZjPH5OUW7O069z5yX4BzYCppK68kHpFZP J31BqQxyu1D+ZdVD5b+3Gl9W1RLwug5LuPQlpbeP2XtxbVDPafDXATmHcYNlD6o5Ajr9 kwe49BtxQCJP6mh+u0KaBESrHOp07qdMsZyirr5qxlPDjhZFQF3GWi/h3WHzBIULzdvK F7HQ== X-Gm-Message-State: AOAM532c61Cc6OJkPRfYLprlS0jxEzPhT0A8uKJbzN4FLr7Of86rqoxw uelpip6gnZVKJLolR+cg5iw= X-Google-Smtp-Source: ABdhPJz/ULyuvejUZob8G60LhccJej7GwUn+hgclX/JwG+2kWkyfyF7/wKcBas0uTfjUSn+B6lvgww== X-Received: by 2002:a5d:6da2:: with SMTP id u2mr2553481wrs.355.1624518102703; Thu, 24 Jun 2021 00:01:42 -0700 (PDT) Received: from gmail.com (0526E2ED.dsl.pool.telekom.hu. [5.38.226.237]) by smtp.gmail.com with ESMTPSA id b71sm2064608wmb.2.2021.06.24.00.01.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 24 Jun 2021 00:01:42 -0700 (PDT) Sender: Ingo Molnar Date: Thu, 24 Jun 2021 09:01:40 +0200 From: Ingo Molnar To: Linus Torvalds Cc: linux-kernel@vger.kernel.org, Peter Zijlstra , Thomas Gleixner , Andrew Morton Subject: [GIT PULL] perf fix Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Linus, Please pull the latest perf/urgent git tree from: git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git perf-urgent-2021-06-24 # HEAD: 7f049fbdd57f6ea71dc741d903c19c73b2f70950 perf/x86/intel/lbr: Zero the xstate buffer on allocation An LBR buffer fix for code that probably only worked accidentally. Thanks, Ingo ------------------> Thomas Gleixner (1): perf/x86/intel/lbr: Zero the xstate buffer on allocation arch/x86/events/intel/lbr.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/events/intel/lbr.c b/arch/x86/events/intel/lbr.c index 4409d2cccfda..e8453de7a964 100644 --- a/arch/x86/events/intel/lbr.c +++ b/arch/x86/events/intel/lbr.c @@ -731,7 +731,8 @@ void reserve_lbr_buffers(void) if (!kmem_cache || cpuc->lbr_xsave) continue; - cpuc->lbr_xsave = kmem_cache_alloc_node(kmem_cache, GFP_KERNEL, + cpuc->lbr_xsave = kmem_cache_alloc_node(kmem_cache, + GFP_KERNEL | __GFP_ZERO, cpu_to_node(cpu)); } }