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=-9.2 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT 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 9FD1AC04EBF for ; Tue, 16 Oct 2018 04:15:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5EFBF2147E for ; Tue, 16 Oct 2018 04:15:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="K8I9UDIA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5EFBF2147E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729685AbeJPMD1 (ORCPT ); Tue, 16 Oct 2018 08:03:27 -0400 Received: from mail.kernel.org ([198.145.29.99]:52138 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729632AbeJPMDZ (ORCPT ); Tue, 16 Oct 2018 08:03:25 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 6A0C2214C4; Tue, 16 Oct 2018 04:15:01 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1539663302; bh=wZC9oNwBAGiQe2rv4Hzyd44nWUHaiUFbiJF4k0cUIhk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K8I9UDIAow3prsjXgwgGfMRcArd+ISHQM6V51WOGrptuiFQaLZERqjYMix8K0n2Eq yEkMPbCFcf4cF2t4YAHc1sGU7iiDoL9Yr8qIpvosT8iyN5OGqmlK3Osr3+0/i/qt/2 +gobPwNbavjKmlsR8t1Lj/viLAHKT/peK8VMpfRo= From: Sasha Levin To: stable@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Jann Horn , Davidlohr Bueso , Oleg Nesterov , Christoph Lameter , Kemi Wang , Andy Lutomirski , Ingo Molnar , Andrew Morton , Greg Kroah-Hartman , Sasha Levin Subject: [PATCH AUTOSEL 4.14 61/61] mm/vmstat.c: fix outdated vmstat_text Date: Tue, 16 Oct 2018 00:14:03 -0400 Message-Id: <20181016041403.135678-61-sashal@kernel.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20181016041403.135678-1-sashal@kernel.org> References: <20181016041403.135678-1-sashal@kernel.org> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Jann Horn [ Upstream commit 28e2c4bb99aa40f9d5f07ac130cbc4da0ea93079 ] 7a9cdebdcc17 ("mm: get rid of vmacache_flush_all() entirely") removed the VMACACHE_FULL_FLUSHES statistics, but didn't remove the corresponding entry in vmstat_text. This causes an out-of-bounds access in vmstat_show(). Luckily this only affects kernels with CONFIG_DEBUG_VM_VMACACHE=y, which is probably very rare. Link: http://lkml.kernel.org/r/20181001143138.95119-1-jannh@google.com Fixes: 7a9cdebdcc17 ("mm: get rid of vmacache_flush_all() entirely") Signed-off-by: Jann Horn Reviewed-by: Kees Cook Reviewed-by: Andrew Morton Acked-by: Michal Hocko Acked-by: Roman Gushchin Cc: Davidlohr Bueso Cc: Oleg Nesterov Cc: Christoph Lameter Cc: Kemi Wang Cc: Andy Lutomirski Cc: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- mm/vmstat.c | 1 - 1 file changed, 1 deletion(-) diff --git a/mm/vmstat.c b/mm/vmstat.c index 2bdc962b2dfe..50b4c11fb612 100644 --- a/mm/vmstat.c +++ b/mm/vmstat.c @@ -1214,7 +1214,6 @@ const char * const vmstat_text[] = { #ifdef CONFIG_DEBUG_VM_VMACACHE "vmacache_find_calls", "vmacache_find_hits", - "vmacache_full_flushes", #endif #ifdef CONFIG_SWAP "swap_ra", -- 2.17.1