From nobody Sat Feb 7 17:19:49 2026 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 82D63C352A1 for ; Tue, 6 Dec 2022 07:19:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232317AbiLFHTV (ORCPT ); Tue, 6 Dec 2022 02:19:21 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51958 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230348AbiLFHTS (ORCPT ); Tue, 6 Dec 2022 02:19:18 -0500 Received: from mail-pj1-x1029.google.com (mail-pj1-x1029.google.com [IPv6:2607:f8b0:4864:20::1029]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2244815717; Mon, 5 Dec 2022 23:19:18 -0800 (PST) Received: by mail-pj1-x1029.google.com with SMTP id u5so4228190pjy.5; Mon, 05 Dec 2022 23:19:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to; bh=wC+jgDs02zc9bwLl6AMbyEX4xn+dp/+JRiH8UBwdO7c=; b=X2b3y6qCh3VVvoH1Rd6ofeI0cnm6FpDnPv3sDWF5XU38qQbVCG34SRyT6/lKN5D23E LME5u42zSTywwqK7SU7C+gQ0PpmqbA4XEpW8IZcZaXdhTPz9/56XYWi7T9foANSEGYJM 5XlAAHW7UaYV74O/b/WsWXwTiJzty68ZK05/KLfUG18uOh3Yc2ob83+zCgF8FpAGTIh7 kC6QR57QrPr9Zzni359A/oPv2iwtUpt38ldljADqfJdnqxIOpHqnChLl4XcXFCDzsyaE /HaScXIeCuoRb2Q4bp+Ghu4n8yR34dpytC1cyFbwJCm6rDqd0KghI7hTxcHGgERW2XnQ KLFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=wC+jgDs02zc9bwLl6AMbyEX4xn+dp/+JRiH8UBwdO7c=; b=6IzMnqWJ6jq8MM+uWlGapxIU/h50fb10MIBVA7G0jp46ZYuvDfhqIxEM6vng07i3A+ Fd7QOmA7j31kc0dhDIe8d2b8/CWpt5W0WeIJi4/M18WcszdP1ag1r2jnt4TIQOaC1Un6 Ipgc+7GhXjbUOE93YFLQOSpG0S+nsVDZnLBpYTftxuUlOL7ekJZ5Kq+ux5rKCU1muAa/ whbFE368qVeOa8ef9o5Y7OtNkh0E5iICji5qpmZ5nTSYN8as2t4DchkIC8nYgyerTFIp 7HzqQn/Vu/Sw6Tws0Djt8gZQ1SCZJ5qFImGp5d5/rdKcfII0dd7XEIAk1mRttlLZnPgw OyCA== X-Gm-Message-State: ANoB5pmdtP92sgmPWSeKnLlxwXnn628UYVxibXJ25/wXmqzgb50vjk6o Tou7iSWEVW4rJhhRebfLkwE= X-Google-Smtp-Source: AA0mqf5flU9WXavqZ3VBbP6o+q5cajYHdPdQCKCk9kv2oo7BLWv2uHzSgqs6G/7NXExaWsp1nHlQRQ== X-Received: by 2002:a17:902:f08d:b0:189:6b32:27dc with SMTP id p13-20020a170902f08d00b001896b3227dcmr52399133pla.29.1670311157567; Mon, 05 Dec 2022 23:19:17 -0800 (PST) Received: from localhost.localdomain ([202.120.234.246]) by smtp.googlemail.com with ESMTPSA id pc16-20020a17090b3b9000b00212cf2fe8c3sm989912pjb.1.2022.12.05.23.19.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Dec 2022 23:19:16 -0800 (PST) From: Miaoqian Lin To: Quentin Monnet , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Martin KaFai Lau , Song Liu , Yonghong Song , John Fastabend , KP Singh , Stanislav Fomichev , Hao Luo , Jiri Olsa , bpf@vger.kernel.org, linux-kernel@vger.kernel.org Cc: linmq006@gmail.com Subject: [PATCH v2] bpftool: Fix memory leak in do_build_table_cb Date: Tue, 6 Dec 2022 11:19:06 +0400 Message-Id: <20221206071906.806384-1-linmq006@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" strdup() allocates memory for path. We need to release the memory in the following error path. Add free() to avoid memory leak. Fixes: 8f184732b60b ("bpftool: Switch to libbpf's hashmap for pinned paths = of BPF objects") Signed-off-by: Miaoqian Lin --- changes in v2: - move free(path); into error branch. --- tools/bpf/bpftool/common.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tools/bpf/bpftool/common.c b/tools/bpf/bpftool/common.c index 0cdb4f711510..e7a11cff7245 100644 --- a/tools/bpf/bpftool/common.c +++ b/tools/bpf/bpftool/common.c @@ -499,6 +499,7 @@ static int do_build_table_cb(const char *fpath, const s= truct stat *sb, if (err) { p_err("failed to append entry to hashmap for ID %u, path '%s': %s", pinned_info.id, path, strerror(errno)); + free(path); goto out_close; } =20 --=20 2.25.1