From: Martin KaFai Lau <kafai@fb.com>
To: <netdev@vger.kernel.org>
Cc: Alexei Starovoitov <ast@fb.com>,
Daniel Borkmann <daniel@iogearbox.net>, <kernel-team@fb.com>,
Yonghong Song <yhs@fb.com>
Subject: [PATCH bpf-next] bpf: Fix memleak in aux->func_info and aux->btf
Date: Sat, 1 Dec 2018 17:08:44 -0800 [thread overview]
Message-ID: <20181202010844.2532686-1-kafai@fb.com> (raw)
The aux->func_info and aux->btf are leaked in the error out cases
during bpf_prog_load(). This patch fixes it.
Fixes: ba64e7d85252 ("bpf: btf: support proper non-jit func info")
Cc: Yonghong Song <yhs@fb.com>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Yonghong Song <yhs@fb.com>
---
kernel/bpf/syscall.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/kernel/bpf/syscall.c b/kernel/bpf/syscall.c
index f9554d9a14e1..4445d0d084d8 100644
--- a/kernel/bpf/syscall.c
+++ b/kernel/bpf/syscall.c
@@ -1560,6 +1560,8 @@ static int bpf_prog_load(union bpf_attr *attr, union bpf_attr __user *uattr)
return err;
free_used_maps:
+ kvfree(prog->aux->func_info);
+ btf_put(prog->aux->btf);
bpf_prog_kallsyms_del_subprogs(prog);
free_used_maps(prog->aux);
free_prog:
--
2.17.1
next reply other threads:[~2018-12-02 12:36 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-12-02 1:08 Martin KaFai Lau [this message]
2018-12-02 17:15 ` [PATCH bpf-next] bpf: Fix memleak in aux->func_info and aux->btf Alexei Starovoitov
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