YiFei Zhu 072d16abf5 selftests/bpf: Wait for receive in cg_storage_multi test ... [ Upstream commit 5af607a861d43ffff830fc1890033e579ec44799 ] In some cases the loopback latency might be large enough, causing the assertion on invocations to be run before ingress prog getting executed. The assertion would fail and the test would flake. This can be reliably reproduced by arbitrarily increasing the loopback latency (thanks to [1]): tc qdisc add dev lo root handle 1: htb default 12 tc class add dev lo parent 1:1 classid 1:12 htb rate 20kbps ceil 20kbps tc qdisc add dev lo parent 1:12 netem delay 100ms Fix this by waiting on the receive end, instead of instantly returning to the assert. The call to read() will wait for the default SO_RCVTIMEO timeout of 3 seconds provided by start_server(). [1] https://gist.github.com/kstevens715/4598301 Reported-by: Martin KaFai Lau <martin.lau@linux.dev> Link: https://lore.kernel.org/bpf/9c5c8b7e-1d89-a3af-5400-14fde81f4429@linux.dev/ Fixes: 3573f38401 ("selftests/bpf: Test CGROUP_STORAGE behavior on shared egress + ingress") Acked-by: Stanislav Fomichev <sdf@google.com> Signed-off-by: YiFei Zhu <zhuyifei@google.com> Link: https://lore.kernel.org/r/20230405193354.1956209-1-zhuyifei@google.com Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>		2023-05-17 11:47:50 +02:00
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fault-injection
ktest	ktest.pl: Add RUN_TIMEOUT option with default unlimited	2023-03-11 16:40:05 +01:00
kunit	tweewide: Fix most Shebang lines	2021-05-22 11:40:55 +02:00
nvdimm
radix-tree	idr test suite: Create anchor before launching throbber	2021-04-16 11:43:21 +02:00
scatterlist
selftests	selftests/bpf: Wait for receive in cg_storage_multi test	2023-05-17 11:47:50 +02:00
vsock