| Message ID | 20241115003248.733862-1-kuba@kernel.org (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [net-next] selftests: net: netlink-dumps: validation checks | expand |
On Thu, Nov 14, 2024 at 04:32:48PM -0800, Jakub Kicinski wrote: > The sanity checks are going to get silently cast to unsigned > and always pass. Cast the sizeof to signed size. > > Signed-off-by: Jakub Kicinski <kuba@kernel.org> Ouch. I checked and I couldn't see any other instances of this problem under tools/testing/selftests/net/ Reviewed-by: Simon Horman <horms@kernel.org>
Hello: This patch was applied to netdev/net-next.git (main) by Jakub Kicinski <kuba@kernel.org>: On Thu, 14 Nov 2024 16:32:48 -0800 you wrote: > The sanity checks are going to get silently cast to unsigned > and always pass. Cast the sizeof to signed size. > > Signed-off-by: Jakub Kicinski <kuba@kernel.org> > --- > CC: linux-kselftest@vger.kernel.org > > [...] Here is the summary with links: - [net-next] selftests: net: netlink-dumps: validation checks https://git.kernel.org/netdev/net-next/c/357c52ff860b You are awesome, thank you!
diff --git a/tools/testing/selftests/net/netlink-dumps.c b/tools/testing/selftests/net/netlink-dumps.c index 195febbf6a61..07423f256f96 100644 --- a/tools/testing/selftests/net/netlink-dumps.c +++ b/tools/testing/selftests/net/netlink-dumps.c @@ -185,10 +185,10 @@ TEST(test_sanity) ASSERT_EQ(n, sizeof(dump_policies)); n = recv(netlink_sock, buf, sizeof(buf), MSG_DONTWAIT); - ASSERT_GE(n, sizeof(struct nlmsghdr)); + ASSERT_GE(n, (ssize_t)sizeof(struct nlmsghdr)); n = recv(netlink_sock, buf, sizeof(buf), MSG_DONTWAIT); - ASSERT_GE(n, sizeof(struct nlmsghdr)); + ASSERT_GE(n, (ssize_t)sizeof(struct nlmsghdr)); close(netlink_sock); }
The sanity checks are going to get silently cast to unsigned and always pass. Cast the sizeof to signed size. Signed-off-by: Jakub Kicinski <kuba@kernel.org> --- CC: linux-kselftest@vger.kernel.org --- tools/testing/selftests/net/netlink-dumps.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)