seccomp: Add missing return in non-void function

commit 04b38d012556199ba4c31195940160e0c44c64f0 upstream.

We don't actually care about the value, since the kernel will panic
before that; but a value should nonetheless be returned, otherwise the
compiler will complain.

Fixes: 8112c4f140fa ("seccomp: remove 2-phase API")
Cc: stable@vger.kernel.org # 4.7+
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20210111172839.640914-1-paul@crapouillou.net
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/kernel/seccomp.c b/kernel/seccomp.c
index 53a7d15..0ceaaba 100644 (file)
--- a/kernel/seccomp.c
+++ b/kernel/seccomp.c
@@ -1050,6 +1050,8 @@ static int __seccomp_filter(int this_syscall, const struct seccomp_data *sd,
                            const bool recheck_after_trace)
 {
        BUG();
+
+       return -1;
 }
 #endif