linux-kernel - [PATCH] selftests/seccomp: Abort without user notification support

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Date:   Wed, 16 Jan 2019 16:35:25 -0800
From:   Kees Cook <keescook@...omium.org>
To:     Shuah Khan <shuah@...nel.org>
Cc:     linux-kernel@...r.kernel.org, linux-kselftest@...r.kernel.org,
        Tycho Andersen <tycho@...ho.ws>,
        James Morris <jmorris@...ei.org>
Subject: [PATCH] selftests/seccomp: Abort without user notification support

In the face of missing user notification support, the self test needs
to stop executing a test (ASSERT_*) instead of just reporting and
continuing (EXPECT_*). This adjusts the user notification tests to do
that where needed.

Reported-by: Shuah Khan <shuah@...nel.org>
Fixes: 6a21cc50f0c7 ("seccomp: add a return code to trap to userspace")
Signed-off-by: Kees Cook <keescook@...omium.org>
---
 tools/testing/selftests/seccomp/seccomp_bpf.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index 067cb4607d6c..496a9a8c773a 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -3044,7 +3044,7 @@ TEST(user_notification_basic)
 	/* Check that the basic notification machinery works */
 	listener = user_trap_syscall(__NR_getpid,
 				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
-	EXPECT_GE(listener, 0);
+	ASSERT_GE(listener, 0);
 
 	/* Installing a second listener in the chain should EBUSY */
 	EXPECT_EQ(user_trap_syscall(__NR_getpid,
@@ -3103,7 +3103,7 @@ TEST(user_notification_kill_in_middle)
 
 	listener = user_trap_syscall(__NR_getpid,
 				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
-	EXPECT_GE(listener, 0);
+	ASSERT_GE(listener, 0);
 
 	/*
 	 * Check that nothing bad happens when we kill the task in the middle
@@ -3152,7 +3152,7 @@ TEST(user_notification_signal)
 
 	listener = user_trap_syscall(__NR_gettid,
 				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
-	EXPECT_GE(listener, 0);
+	ASSERT_GE(listener, 0);
 
 	pid = fork();
 	ASSERT_GE(pid, 0);
@@ -3215,7 +3215,7 @@ TEST(user_notification_closed_listener)
 
 	listener = user_trap_syscall(__NR_getpid,
 				     SECCOMP_FILTER_FLAG_NEW_LISTENER);
-	EXPECT_GE(listener, 0);
+	ASSERT_GE(listener, 0);
 
 	/*
 	 * Check that we get an ENOSYS when the listener is closed.
@@ -3376,7 +3376,7 @@ TEST(seccomp_get_notif_sizes)
 {
 	struct seccomp_notif_sizes sizes;
 
-	EXPECT_EQ(seccomp(SECCOMP_GET_NOTIF_SIZES, 0, &sizes), 0);
+	ASSERT_EQ(seccomp(SECCOMP_GET_NOTIF_SIZES, 0, &sizes), 0);
 	EXPECT_EQ(sizes.seccomp_notif, sizeof(struct seccomp_notif));
 	EXPECT_EQ(sizes.seccomp_notif_resp, sizeof(struct seccomp_notif_resp));
 }
-- 
2.17.1


-- 
Kees Cook