Messages in this thread Patch in this message | | | From | YueHaibing <> | Subject | [PATCH] bpf: check NULL for sk_to_full_sk() | Date | Mon, 21 May 2018 15:55:58 +0800 |
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like commit df39a9f106d5 ("bpf: check NULL for sk_to_full_sk() return value"), we should check sk_to_full_sk return value against NULL.
Signed-off-by: YueHaibing <yuehaibing@huawei.com> --- include/linux/bpf-cgroup.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h index 30d15e6..fd3fbeb 100644 --- a/include/linux/bpf-cgroup.h +++ b/include/linux/bpf-cgroup.h @@ -91,7 +91,7 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor, int __ret = 0; \ if (cgroup_bpf_enabled && sk && sk == skb->sk) { \ typeof(sk) __sk = sk_to_full_sk(sk); \ - if (sk_fullsock(__sk)) \ + if (__sk && sk_fullsock(__sk)) \ __ret = __cgroup_bpf_run_filter_skb(__sk, skb, \ BPF_CGROUP_INET_EGRESS); \ } \ -- 2.7.0
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