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* [PATCH][next] bpf: remove redundant initialization of variable allow
@ 2021-08-17 17:08 Colin King
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From: Colin King @ 2021-08-17 17:08 UTC (permalink / raw)
To: Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko,
Martin KaFai Lau, Song Liu, Yonghong Song, John Fastabend,
KP Singh, netdev, bpf
Cc: kernel-janitors, linux-kernel
From: Colin Ian King <colin.king@canonical.com>
The variable allow is being initialized with a value that is never read, it
is being updated later on. The assignment is redundant and can be removed.
Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
---
kernel/bpf/cgroup.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/bpf/cgroup.c b/kernel/bpf/cgroup.c
index a1dedba4c174..9f35928bab0a 100644
--- a/kernel/bpf/cgroup.c
+++ b/kernel/bpf/cgroup.c
@@ -1133,11 +1133,11 @@ int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
struct bpf_cgroup_dev_ctx ctx = {
.access_type = (access << 16) | dev_type,
.major = major,
.minor = minor,
};
- int allow = 1;
+ int allow;
rcu_read_lock();
cgrp = task_dfl_cgroup(current);
allow = BPF_PROG_RUN_ARRAY_CG(cgrp->bpf.effective[type], &ctx,
bpf_prog_run);
--
2.32.0
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