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 8AA8AC5AE4B for ; Wed, 15 Nov 2023 21:07:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235625AbjKOVH1 (ORCPT ); Wed, 15 Nov 2023 16:07:27 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37308 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235071AbjKOVHY (ORCPT ); Wed, 15 Nov 2023 16:07:24 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 50533AB for ; Wed, 15 Nov 2023 13:07:21 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A3CCBC4E752; Wed, 15 Nov 2023 20:51:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700081497; bh=aDLYKm6YTAgIAZ6KtUKWqPml525CrOIQRc427apSwoQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Z95bYfZREUWNp0/fPtAZT5XeWb4elEub9QiLliVA5hUHvlbSwjL0XwfWFzvQCV3Wp VBypFAOhI4KpUol5zWX3uTNmkFcgUD/OH/c3v8VH33Q72gMhJONC8IV2F6+nbIevDa eWuqm35YZCoBS3FPR1zg6g2DPzWDkrMZsqeRVvCI= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Wang Yufen , "Naveen N. Rao" , Michael Ellerman , Sasha Levin Subject: [PATCH 5.15 189/244] powerpc/pseries: fix potential memory leak in init_cpu_associativity() Date: Wed, 15 Nov 2023 15:36:21 -0500 Message-ID: <20231115203559.677984985@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115203548.387164783@linuxfoundation.org> References: <20231115203548.387164783@linuxfoundation.org> User-Agent: quilt/0.67 X-stable: review X-Patchwork-Hint: ignore MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wang Yufen [ Upstream commit 95f1a128cd728a7257d78e868f1f5a145fc43736 ] If the vcpu_associativity alloc memory successfully but the pcpu_associativity fails to alloc memory, the vcpu_associativity memory leaks. Fixes: d62c8deeb6e6 ("powerpc/pseries: Provide vcpu dispatch statistics") Signed-off-by: Wang Yufen Reviewed-by: "Naveen N. Rao" Signed-off-by: Michael Ellerman Link: https://msgid.link/1671003983-10794-1-git-send-email-wangyufen@huawei.com Signed-off-by: Sasha Levin --- arch/powerpc/platforms/pseries/lpar.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c index d133597a84ca0..fce0237b07155 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -524,8 +524,10 @@ static ssize_t vcpudispatch_stats_write(struct file *file, const char __user *p, if (cmd) { rc = init_cpu_associativity(); - if (rc) + if (rc) { + destroy_cpu_associativity(); goto out; + } for_each_possible_cpu(cpu) { disp = per_cpu_ptr(&vcpu_disp_data, cpu); -- 2.42.0