Ensure the output file is always owned by root (even if tcpdump was compiled with `--with-user`), by passing the `-Z root` argument when invoking it.
Cc: [email protected] Reported-by: Edoardo Canepa <[email protected]> Closes: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/2129815 Fixes: bf59028ea8d4 ("selftests: net: add test for destination in broadcast packets") Suggested-by: Edoardo Canepa <[email protected]> Tested-by: Ross Porter <[email protected]> Signed-off-by: Ross Porter <[email protected]> --- tools/testing/selftests/net/broadcast_ether_dst.sh | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/net/broadcast_ether_dst.sh b/tools/testing/selftests/net/broadcast_ether_dst.sh index 334a7eca8a80..5e7a8fe23c7a 100755 --- a/tools/testing/selftests/net/broadcast_ether_dst.sh +++ b/tools/testing/selftests/net/broadcast_ether_dst.sh @@ -44,7 +44,7 @@ test_broadcast_ether_dst() { # tcpdump will exit after receiving a single packet # timeout will kill tcpdump if it is still running after 2s timeout 2s ip netns exec "${CLIENT_NS}" \ - tcpdump -i link0 -c 1 -w "${CAPFILE}" icmp &> "${OUTPUT}" & + tcpdump -i link0 -c 1 -w "${CAPFILE}" icmp -Z root &> "${OUTPUT}" & pid=$! slowwait 1 grep -qs "listening" "${OUTPUT}" -- 2.53.0
