From: Miaoqian Lin <linmq006@gmail.com>
To: Quentin Monnet <quentin@isovalent.com>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Andrii Nakryiko <andrii@kernel.org>,
Martin KaFai Lau <martin.lau@linux.dev>,
Song Liu <song@kernel.org>, Yonghong Song <yhs@fb.com>,
John Fastabend <john.fastabend@gmail.com>,
KP Singh <kpsingh@kernel.org>,
Stanislav Fomichev <sdf@google.com>, Hao Luo <haoluo@google.com>,
Jiri Olsa <jolsa@kernel.org>,
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 [thread overview]
Message-ID: <20221206071906.806384-1-linmq006@gmail.com> (raw)
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 <linmq006@gmail.com>
---
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 struct 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;
}
--
2.25.1
next reply other threads:[~2022-12-06 7:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-06 7:19 Miaoqian Lin [this message]
2022-12-06 20:30 ` [PATCH v2] bpftool: Fix memory leak in do_build_table_cb patchwork-bot+netdevbpf
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