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| author |   Andrii Nakryiko <andriin@fb.com> | 2020-04-28 18:21:08 -0700 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2020-04-28 19:48:05 -0700 |
| commit | 3521ffa2ee9a48c3236c93f54ae11c074490ebce (patch) | |
| tree | 77d887266884f290af1c02cdb5ec7fab10157896 /tools/lib | |
| parent | selftests/bpf: Fix invalid memory reads in core_relo selftest (diff) | |
| download | linux-dev-3521ffa2ee9a48c3236c93f54ae11c074490ebce.tar.xz linux-dev-3521ffa2ee9a48c3236c93f54ae11c074490ebce.zip | |
libbpf: Fix huge memory leak in libbpf_find_vmlinux_btf_id()
BTF object wasn't freed.
Fixes: a6ed02cac690 ("libbpf: Load btf_vmlinux only once per object.")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Cc: KP Singh <kpsingh@google.com>
Link: https://lore.kernel.org/bpf/20200429012111.277390-9-andriin@fb.com
Diffstat (limited to 'tools/lib')
| -rw-r--r-- | tools/lib/bpf/libbpf.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c index 445ee903f9cd..d86ff8214b96 100644 --- a/tools/lib/bpf/libbpf.c +++ b/tools/lib/bpf/libbpf.c @@ -6934,6 +6934,7 @@ int libbpf_find_vmlinux_btf_id(const char *name, enum bpf_attach_type attach_type) { struct btf *btf; + int err; btf = libbpf_find_kernel_btf(); if (IS_ERR(btf)) { @@ -6941,7 +6942,9 @@ int libbpf_find_vmlinux_btf_id(const char *name, return -EINVAL; } - return __find_vmlinux_btf_id(btf, name, attach_type); + err = __find_vmlinux_btf_id(btf, name, attach_type); + btf__free(btf); + return err; } static int libbpf_find_prog_btf_id(const char *name, __u32 attach_prog_fd) |