From: YueHaibing <yuehaibing@huawei.com>
To: <ast@kernel.org>, <daniel@iogearbox.net>
Cc: <linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>,
YueHaibing <yuehaibing@huawei.com>
Subject: [PATCH] bpf: check NULL for sk_to_full_sk()
Date: Mon, 21 May 2018 15:55:58 +0800 [thread overview]
Message-ID: <20180521075558.11968-1-yuehaibing@huawei.com> (raw)
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
next reply other threads:[~2018-05-21 7:57 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-21 7:55 YueHaibing [this message]
2018-05-21 15:17 ` [PATCH] bpf: check NULL for sk_to_full_sk() Eric Dumazet
2018-05-22 3:29 ` YueHaibing
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