tree 09bcac3746d3994272e259161c0fcbc7ba72be94
parent 023f8892563b9332d40762db521585838d083fd9
author John Stultz <john.stultz@linaro.org> 1463077072 -0700
committer Dmitry Shmidt <dimitrysh@google.com> 1485554106 -0800

ANDROID: xt_qtaguid: Fix panic caused by processing non-full socket.

In an issue very similar to 4e461c777e3 (xt_qtaguid: Fix panic
caused by synack processing), we were seeing panics on occasion
in testing.

In this case, it was the same issue, but caused by a different
call path, as the sk being returned from qtaguid_find_sk() was
not a full socket. Resulting in the sk->sk_socket deref to fail.

This patch adds an extra check to ensure the sk being retuned
is a full socket, and if not it returns NULL.

Reported-by: Milosz Wasilewski <milosz.wasilewski@linaro.org>
Signed-off-by: John Stultz <john.stultz@linaro.org>