From bc0970d5ac1d1317e212bdf55533935ecb6ae95c Mon Sep 17 00:00:00 2001 From: Paolo Abeni Date: Tue, 30 Jan 2024 18:47:18 +0100 Subject: selftests: net: don't access /dev/stdout in pmtu.sh When running the pmtu.sh via the kselftest infra, accessing /dev/stdout gives unexpected results: # dd: failed to open '/dev/stdout': Device or resource busy # TEST: IPv4, bridged vxlan4: PMTU exceptions [FAIL] Let dd use directly the standard output to fix the above: # TEST: IPv4, bridged vxlan4: PMTU exceptions - nexthop objects [ OK ] Fixes: 136a1b434bbb ("selftests: net: test vxlan pmtu exceptions with tcp") Signed-off-by: Paolo Abeni Reviewed-by: Guillaume Nault Reviewed-by: David Ahern Link: https://lore.kernel.org/r/23d7592c5d77d75cff9b34f15c227f92e911c2ae.1706635101.git.pabeni@redhat.com Signed-off-by: Jakub Kicinski --- tools/testing/selftests/net/pmtu.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/pmtu.sh b/tools/testing/selftests/net/pmtu.sh index 31892b366913..3f118e3f1c66 100755 --- a/tools/testing/selftests/net/pmtu.sh +++ b/tools/testing/selftests/net/pmtu.sh @@ -1339,7 +1339,7 @@ test_pmtu_ipvX_over_bridged_vxlanY_or_geneveY_exception() { sleep 1 - dd if=/dev/zero of=/dev/stdout status=none bs=1M count=1 | ${target} socat -T 3 -u STDIN $TCPDST,connect-timeout=3 + dd if=/dev/zero status=none bs=1M count=1 | ${target} socat -T 3 -u STDIN $TCPDST,connect-timeout=3 size=$(du -sb $tmpoutfile) size=${size%%/tmp/*} -- cgit