This is a note to let you know that I've just added the patch titled
selftests: net: udpgso_bench: Fix racing bug between the rx/tx programs
to the 6.1-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
selftests-net-udpgso_bench-fix-racing-bug-between-th.patch
and it can be found in the queue-6.1 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 65712ac83f2484850b1f5f4a1b10487c970df190
Author: Andrei Gherzan <andrei.gherzan@xxxxxxxxxxxxx>
Date: Wed Feb 1 00:16:14 2023 +0000
selftests: net: udpgso_bench: Fix racing bug between the rx/tx programs
[ Upstream commit dafe93b9ee21028d625dce347118b82659652eff ]
"udpgro_bench.sh" invokes udpgso_bench_rx/udpgso_bench_tx programs
subsequently and while doing so, there is a chance that the rx one is not
ready to accept socket connections. This racing bug could fail the test
with at least one of the following:
./udpgso_bench_tx: connect: Connection refused
./udpgso_bench_tx: sendmsg: Connection refused
./udpgso_bench_tx: write: Connection refused
This change addresses this by making udpgro_bench.sh wait for the rx
program to be ready before firing off the tx one - up to a 10s timeout.
Fixes: 3a687bef148d ("selftests: udp gso benchmark")
Signed-off-by: Andrei Gherzan <andrei.gherzan@xxxxxxxxxxxxx>
Cc: Paolo Abeni <pabeni@xxxxxxxxxx>
Cc: Willem de Bruijn <willemb@xxxxxxxxxx>
Reviewed-by: Willem de Bruijn <willemb@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230201001612.515730-3-andrei.gherzan@xxxxxxxxxxxxx
Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/tools/testing/selftests/net/udpgso_bench.sh b/tools/testing/selftests/net/udpgso_bench.sh
index dc932fd65363..640bc43452fa 100755
--- a/tools/testing/selftests/net/udpgso_bench.sh
+++ b/tools/testing/selftests/net/udpgso_bench.sh
@@ -7,6 +7,7 @@ readonly GREEN='\033[0;92m'
readonly YELLOW='\033[0;33m'
readonly RED='\033[0;31m'
readonly NC='\033[0m' # No Color
+readonly TESTPORT=8000
readonly KSFT_PASS=0
readonly KSFT_FAIL=1
@@ -56,11 +57,26 @@ trap wake_children EXIT
run_one() {
local -r args=$@
+ local nr_socks=0
+ local i=0
+ local -r timeout=10
+
+ ./udpgso_bench_rx -p "$TESTPORT" &
+ ./udpgso_bench_rx -p "$TESTPORT" -t &
+
+ # Wait for the above test program to get ready to receive connections.
+ while [ "$i" -lt "$timeout" ]; do
+ nr_socks="$(ss -lnHi | grep -c "\*:${TESTPORT}")"
+ [ "$nr_socks" -eq 2 ] && break
+ i=$((i + 1))
+ sleep 1
+ done
+ if [ "$nr_socks" -ne 2 ]; then
+ echo "timed out while waiting for udpgso_bench_rx"
+ exit 1
+ fi
- ./udpgso_bench_rx &
- ./udpgso_bench_rx -t &
-
- ./udpgso_bench_tx ${args}
+ ./udpgso_bench_tx -p "$TESTPORT" ${args}
}
run_in_netns() {
