This is a note to let you know that I've just added the patch titled bpftool: Fix memory leak in do_build_table_cb to the 6.1-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: bpftool-fix-memory-leak-in-do_build_table_cb.patch and it can be found in the queue-6.1 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit c3277e661e16882d266b9027b16727198edfb99d Author: Miaoqian Lin <linmq006@xxxxxxxxx> Date: Tue Dec 6 11:19:06 2022 +0400 bpftool: Fix memory leak in do_build_table_cb [ Upstream commit fa55ef14ef4fe06198c0ce811b603aec24134bc2 ] 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@xxxxxxxxx> Signed-off-by: Daniel Borkmann <daniel@xxxxxxxxxxxxx> Link: https://lore.kernel.org/bpf/20221206071906.806384-1-linmq006@xxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> 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; }