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 D1FCFC5AE4A for ; Wed, 15 Nov 2023 19:34:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234284AbjKOTeK (ORCPT ); Wed, 15 Nov 2023 14:34:10 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50914 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234275AbjKOTeG (ORCPT ); Wed, 15 Nov 2023 14:34:06 -0500 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 45030D51 for ; Wed, 15 Nov 2023 11:33:57 -0800 (PST) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B99CAC433C9; Wed, 15 Nov 2023 19:33:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1700076836; bh=1Y5KkPajeCUx+3xnZW+xlI38jIXqvDzt6tJ44JhK26U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=GGEjDJPzrJlahNSdZ9nXI4VHrdlRHm4e3TnIxwhIJOTxM3DzDEYF2VZ6N2ELIscjP zA/PU+sCDqRmbQiKu+1VkSflbt+ztbjxQNX13mqistwq4N3PyoP3AeSKpjpcPMD8+1 tLjaZhj1DR2nxyBtYid92hjLSGuoNhAAGxAHZ4lY= 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 6.5 438/550] powerpc/pseries: fix potential memory leak in init_cpu_associativity() Date: Wed, 15 Nov 2023 14:17:02 -0500 Message-ID: <20231115191631.157299294@linuxfoundation.org> X-Mailer: git-send-email 2.42.1 In-Reply-To: <20231115191600.708733204@linuxfoundation.org> References: <20231115191600.708733204@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 6.5-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 cb2f1211f7ebf..d1fc396bb1de4 100644 --- a/arch/powerpc/platforms/pseries/lpar.c +++ b/arch/powerpc/platforms/pseries/lpar.c @@ -525,8 +525,10 @@ 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