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=-13.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 484A0C4361B for ; Fri, 18 Dec 2020 15:30:32 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [216.205.24.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id BD66C23B55 for ; Fri, 18 Dec 2020 15:30:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org BD66C23B55 Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=suse.com Authentication-Results: mail.kernel.org; spf=tempfail smtp.mailfrom=dm-devel-bounces@redhat.com Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-491-kFxILpOmNWG7FcuC4cNgbQ-1; Fri, 18 Dec 2020 10:30:28 -0500 X-MC-Unique: kFxILpOmNWG7FcuC4cNgbQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id B9FC2803621; Fri, 18 Dec 2020 15:30:22 +0000 (UTC) Received: from colo-mx.corp.redhat.com (colo-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.21]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7D20960CEF; Fri, 18 Dec 2020 15:30:22 +0000 (UTC) Received: from lists01.pubmisc.prod.ext.phx2.redhat.com (lists01.pubmisc.prod.ext.phx2.redhat.com [10.5.19.33]) by colo-mx.corp.redhat.com (Postfix) with ESMTP id 1A19A4A7C6; Fri, 18 Dec 2020 15:30:22 +0000 (UTC) Received: from smtp.corp.redhat.com (int-mx05.intmail.prod.int.rdu2.redhat.com [10.11.54.5]) by lists01.pubmisc.prod.ext.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id 0BIFRGUY017079 for ; Fri, 18 Dec 2020 10:27:16 -0500 Received: by smtp.corp.redhat.com (Postfix) id 853AAF3D17; Fri, 18 Dec 2020 15:27:16 +0000 (UTC) Received: from mimecast-mx02.redhat.com (mimecast06.extmail.prod.ext.rdu2.redhat.com [10.11.55.22]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7FFDAF3D10 for ; Fri, 18 Dec 2020 15:27:14 +0000 (UTC) Received: from us-smtp-1.mimecast.com (us-smtp-2.mimecast.com [205.139.110.61]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA384 (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 08FB3186E123 for ; Fri, 18 Dec 2020 15:27:14 +0000 (UTC) Received: from mx2.suse.de (mx2.suse.de [195.135.220.15]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-530-GUD_SjSKNheIAD9fWtKhSw-1; Fri, 18 Dec 2020 10:27:11 -0500 X-MC-Unique: GUD_SjSKNheIAD9fWtKhSw-1 X-Virus-Scanned: by amavisd-new at test-mx.suse.de Received: from relay2.suse.de (unknown [195.135.221.27]) by mx2.suse.de (Postfix) with ESMTP id 3B65CACF1; Fri, 18 Dec 2020 15:27:10 +0000 (UTC) From: mwilck@suse.com To: Christophe Varoqui , Benjamin Marzinski Date: Fri, 18 Dec 2020 16:26:38 +0100 Message-Id: <20201218152638.21660-1-mwilck@suse.com> In-Reply-To: <20201217163255.GB3103@octiron.msp.redhat.com> References: <20201217163255.GB3103@octiron.msp.redhat.com> MIME-Version: 1.0 X-Mimecast-Impersonation-Protect: Policy=CLT - Impersonation Protection Definition; Similar Internal Domain=false; Similar Monitored External Domain=false; Custom External Domain=false; Mimecast External Domain=false; Newly Observed Domain=false; Internal User Name=false; Custom Display Name List=false; Reply-to Address Mismatch=false; Targeted Threat Dictionary=false; Mimecast Threat Dictionary=false; Custom Threat Dictionary=false X-Scanned-By: MIMEDefang 2.79 on 10.11.54.5 X-MIME-Autoconverted: from quoted-printable to 8bit by lists01.pubmisc.prod.ext.phx2.redhat.com id 0BIFRGUY017079 X-loop: dm-devel@redhat.com Cc: dm-devel@redhat.com, Martin Wilck Subject: [dm-devel] [PATCH v5 22/29] multipath: fix leak in check_path_valid() X-BeenThere: dm-devel@redhat.com X-Mailman-Version: 2.1.12 Precedence: junk List-Id: device-mapper development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=dm-devel-bounces@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit From: Martin Wilck If path status was successfully determined before calling store_pathvec(), free_path() wasn't called. Reviewed-by: Benjamin Marzinski Signed-off-by: Martin Wilck --- multipath/main.c | 30 ++++++++++++++++++++---------- 1 file changed, 20 insertions(+), 10 deletions(-) diff --git a/multipath/main.c b/multipath/main.c index 1949a1c..043d8fa 100644 --- a/multipath/main.c +++ b/multipath/main.c @@ -93,7 +93,7 @@ void rcu_register_thread_memb(void) {} void rcu_unregister_thread_memb(void) {} static int -filter_pathvec (vector pathvec, char * refwwid) +filter_pathvec (vector pathvec, const char *refwwid) { int i; struct path * pp; @@ -594,8 +594,9 @@ static int check_path_valid(const char *name, struct config *conf, bool is_uevent) { int fd, r = PATH_IS_ERROR; - struct path *pp = NULL; + struct path *pp; vector pathvec = NULL; + const char *wwid; pp = alloc_path(); if (!pp) @@ -664,14 +665,19 @@ check_path_valid(const char *name, struct config *conf, bool is_uevent) if (store_path(pathvec, pp) != 0) { free_path(pp); + pp = NULL; goto fail; + } else { + /* make sure path isn't freed twice */ + wwid = pp->wwid; + pp = NULL; } /* For find_multipaths = SMART, if there is more than one path * matching the refwwid, then the path is valid */ if (path_discovery(pathvec, DI_SYSFS | DI_WWID) < 0) goto fail; - filter_pathvec(pathvec, pp->wwid); + filter_pathvec(pathvec, wwid); if (VECTOR_SIZE(pathvec) > 1) r = PATH_IS_VALID; else @@ -679,21 +685,25 @@ check_path_valid(const char *name, struct config *conf, bool is_uevent) out: r = print_cmd_valid(r, pathvec, conf); - free_pathvec(pathvec, FREE_PATHS); /* * multipath -u must exit with status 0, otherwise udev won't * import its output. */ if (!is_uevent && r == PATH_IS_NOT_VALID) - return RTVL_FAIL; - return RTVL_OK; + r = RTVL_FAIL; + else + r = RTVL_OK; + goto cleanup; fail: - if (pathvec) - free_pathvec(pathvec, FREE_PATHS); - else + r = RTVL_FAIL; + +cleanup: + if (pp != NULL) free_path(pp); - return RTVL_FAIL; + if (pathvec != NULL) + free_pathvec(pathvec, FREE_PATHS); + return r; } static int -- 2.29.0 -- dm-devel mailing list dm-devel@redhat.com https://www.redhat.com/mailman/listinfo/dm-devel