From: Alessandro Zanni Date: Thu, 23 Oct 2025 20:53:52 +0000 (+0200) Subject: selftest: net: prevent use of uninitialized variable X-Git-Tag: v6.19-rc1~170^2~320 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=13cb6ac5b506d510d5d57128ff9d99541aae886e;p=thirdparty%2Fkernel%2Flinux.git selftest: net: prevent use of uninitialized variable Fix to avoid the usage of the `ret` variable uninitialized in the following macro expansions. It solves the following warning: In file included from netlink-dumps.c:21: netlink-dumps.c: In function ‘dump_extack’: ../kselftest_harness.h:788:35: warning: ‘ret’ may be used uninitialized [-Wmaybe-uninitialized] 788 | intmax_t __exp_print = (intmax_t)__exp; \ | ^~~~~~~~~~~ ../kselftest_harness.h:631:9: note: in expansion of macro ‘__EXPECT’ 631 | __EXPECT(expected, #expected, seen, #seen, ==, 0) | ^~~~~~~~ netlink-dumps.c:169:9: note: in expansion of macro ‘EXPECT_EQ’ 169 | EXPECT_EQ(ret, FOUND_EXTACK); | ^~~~~~~~~ The issue can be reproduced, building the tests, with the command: make -C tools/testing/selftests TARGETS=net Signed-off-by: Alessandro Zanni Link: https://patch.msgid.link/20251023205354.28249-1-alessandro.zanni87@gmail.com Signed-off-by: Jakub Kicinski --- diff --git a/tools/testing/selftests/net/netlink-dumps.c b/tools/testing/selftests/net/netlink-dumps.c index 7618ebe528a4c..679b6c77ace7c 100644 --- a/tools/testing/selftests/net/netlink-dumps.c +++ b/tools/testing/selftests/net/netlink-dumps.c @@ -143,6 +143,7 @@ TEST(dump_extack) EXPECT_EQ(n, -1); EXPECT_EQ(errno, ENOBUFS); + ret = NO_CTRL; for (i = 0; i < cnt; i++) { struct ext_ack ea = {};