AcoSail/kernel_optimize_test
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bpf: NULL pointer check is not needed in BPF_CGROUP_RUN_PROG_INET_SOCK

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sk is already allocated in inet_create/inet6_create, hence when
BPF_CGROUP_RUN_PROG_INET_SOCK is executed sk will never be NULL.

The logic is as bellow,
	sk = sk_alloc();
	if (!sk)
		goto out;
	BPF_CGROUP_RUN_PROG_INET_SOCK(sk);

Signed-off-by: Yafang Shao <laoar.shao@gmail.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
This commit is contained in:
Yafang Shao 2018-02-23 14:58:41 +08:00 committed by Daniel Borkmann
parent 0b6b8a3dd8
commit ee07862f7b
1 changed files with 1 additions and 1 deletions
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2
include/linux/bpf-cgroup.h
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@ -96,7 +96,7 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
#define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) \
({ \
int __ret = 0; \
if (cgroup_bpf_enabled && sk) { \
if (cgroup_bpf_enabled) { \
__ret = __cgroup_bpf_run_filter_sk(sk, \
BPF_CGROUP_INET_SOCK_CREATE); \
} \