selftests: netfilter: skip br_netfilter queue tests if kernel is tainted

These scripts fail if the kernel is tainted which leads to wrong test
failure reports in CI environments when an unrelated test triggers some
splat.

Check taint state at start of script and SKIP if its already dodgy.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/tools/testing/selftests/net/netfilter/br_netfilter.sh b/tools/testing/selftests/net/netfilter/br_netfilter.sh
index c28379a..1559ba2 100755 (executable)
--- a/tools/testing/selftests/net/netfilter/br_netfilter.sh
+++ b/tools/testing/selftests/net/netfilter/br_netfilter.sh
@@ -13,6 +13,12 @@ source lib.sh
 
 checktool "nft --version" "run test without nft tool"
 
+read t < /proc/sys/kernel/tainted
+if [ "$t" -ne 0 ];then
+       echo SKIP: kernel is tainted
+       exit $ksft_skip
+fi
+
 cleanup() {
        cleanup_all_ns
 }
@@ -165,6 +171,7 @@ if [ "$t" -eq 0 ];then
        echo PASS: kernel not tainted
 else
        echo ERROR: kernel is tainted
+       dmesg
        ret=1
 fi
 

diff --git a/tools/testing/selftests/net/netfilter/br_netfilter_queue.sh b/tools/testing/selftests/net/netfilter/br_netfilter_queue.sh
index 6a764d7..4788641 100755 (executable)
--- a/tools/testing/selftests/net/netfilter/br_netfilter_queue.sh
+++ b/tools/testing/selftests/net/netfilter/br_netfilter_queue.sh
@@ -4,6 +4,12 @@ source lib.sh
 
 checktool "nft --version" "run test without nft tool"
 
+read t < /proc/sys/kernel/tainted
+if [ "$t" -ne 0 ];then
+       echo SKIP: kernel is tainted
+       exit $ksft_skip
+fi
+
 cleanup() {
        cleanup_all_ns
 }
@@ -72,6 +78,7 @@ if [ "$t" -eq 0 ];then
        echo PASS: kernel not tainted
 else
        echo ERROR: kernel is tainted
+       dmesg
        exit 1
 fi
 

diff --git a/tools/testing/selftests/net/netfilter/nft_queue.sh b/tools/testing/selftests/net/netfilter/nft_queue.sh
index 785e387..784d1b4 100755 (executable)
--- a/tools/testing/selftests/net/netfilter/nft_queue.sh
+++ b/tools/testing/selftests/net/netfilter/nft_queue.sh
@@ -593,6 +593,7 @@ EOF
                echo "PASS: queue program exiting while packets queued"
        else
                echo "TAINT: queue program exiting while packets queued"
+               dmesg
                ret=1
        fi
 }