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| author |   Alexei Starovoitov <ast@kernel.org> | 2020-07-14 12:31:45 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-07-14 12:31:45 -0700 |
| commit | a4fa458950b40d3849946daa32466392811a3716 (patch) | |
| tree | 46eeaafa4faa0f1ea594afb91227fdc829f9c800 /net/bpfilter | |
| parent | Merge branch 'usermode-driver-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace into bpf-next (diff) | |
| download | linux-dev-a4fa458950b40d3849946daa32466392811a3716.tar.xz linux-dev-a4fa458950b40d3849946daa32466392811a3716.zip | |
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>
Diffstat (limited to 'net/bpfilter')
| -rw-r--r-- | net/bpfilter/bpfilter_kern.c | 1 |
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)) { |