From 30d53a5860cf6743db011719d414456b10773d6a Mon Sep 17 00:00:00 2001
From: Tycho Andersen <tycho@tycho.ws>
Date: Fri, 18 Jan 2019 17:12:17 -0700
Subject: [PATCH] selftests: unshare userns in seccomp pidns testcases
The pid ns cannot be unshare()d as an unprivileged user without owning the
userns as well. Let's unshare the userns so that we can subsequently
unshare the pidns.
This also means that we don't need to set the no new privs bit as in the
other test cases, since we're unsharing the userns.
Signed-off-by: Tycho Andersen <tycho@tycho.ws>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Shuah Khan <shuah@kernel.org>
---
tools/testing/selftests/seccomp/seccomp_bpf.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/tools/testing/selftests/seccomp/seccomp_bpf.c b/tools/testing/selftests/seccomp/seccomp_bpf.c
index abff7afd33453..54587b0819796 100644
--- a/tools/testing/selftests/seccomp/seccomp_bpf.c
+++ b/tools/testing/selftests/seccomp/seccomp_bpf.c
@@ -3313,7 +3313,7 @@ TEST(user_notification_child_pid_ns)
struct seccomp_notif req = {};
struct seccomp_notif_resp resp = {};
- ASSERT_EQ(unshare(CLONE_NEWPID), 0);
+ ASSERT_EQ(unshare(CLONE_NEWUSER | CLONE_NEWPID), 0);
listener = user_trap_syscall(__NR_getpid, SECCOMP_FILTER_FLAG_NEW_LISTENER);
ASSERT_GE(listener, 0);
@@ -3416,6 +3416,8 @@ TEST(user_notification_fault_recv)
struct seccomp_notif req = {};
struct seccomp_notif_resp resp = {};
+ ASSERT_EQ(unshare(CLONE_NEWUSER), 0);
+
listener = user_trap_syscall(__NR_getpid, SECCOMP_FILTER_FLAG_NEW_LISTENER);
ASSERT_GE(listener, 0);
--
2.39.5