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authorAlexei Starovoitov <ast@kernel.org>2020-07-14 12:31:45 -0700
committerAlexei Starovoitov <ast@kernel.org>2020-07-14 12:31:45 -0700
commita4fa458950b40d3849946daa32466392811a3716 (patch)
tree46eeaafa4faa0f1ea594afb91227fdc829f9c800
parentec2ffdf65f8b2b64f3f40062f0a24861b72cf39f (diff)
bpfilter: Initialize pos variable
Make sure 'pos' is initialized to zero before calling kernel_write(). Fixes: d2ba09c17a06 ("net: add skeleton of bpfilter kernel module") Signed-off-by: Alexei Starovoitov <ast@kernel.org>
-rw-r--r--net/bpfilter/bpfilter_kern.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/bpfilter/bpfilter_kern.c b/net/bpfilter/bpfilter_kern.c
index 54f82c341e20..2c31e82cb953 100644
--- a/net/bpfilter/bpfilter_kern.c
+++ b/net/bpfilter/bpfilter_kern.c
@@ -48,6 +48,7 @@ static int __bpfilter_process_sockopt(struct sock *sk, int optname,
req.len = optlen;
if (!bpfilter_ops.info.tgid)
goto out;
+ pos = 0;
n = kernel_write(bpfilter_ops.info.pipe_to_umh, &req, sizeof(req),
&pos);
if (n != sizeof(req)) {