From: Li Zhijian lizhijian@cn.fujitsu.com
stable inclusion from stable-v4.19.207 commit 4c48bd3aa1a33cb3e8a0eca8330b8f100f43d895 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/I5QR5E CVE: NA
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commit 2d82d73da35b72b53fe0d96350a2b8d929d07e42
0Day robot observed that it's easily timeout on a heavy load host. ------------------- # selftests: bpf: test_maps # Fork 1024 tasks to 'test_update_delete' # Fork 1024 tasks to 'test_update_delete' # Fork 100 tasks to 'test_hashmap' # Fork 100 tasks to 'test_hashmap_percpu' # Fork 100 tasks to 'test_hashmap_sizes' # Fork 100 tasks to 'test_hashmap_walk' # Fork 100 tasks to 'test_arraymap' # Fork 100 tasks to 'test_arraymap_percpu' # Failed sockmap unexpected timeout not ok 3 selftests: bpf: test_maps # exit=1 # selftests: bpf: test_lru_map # nr_cpus:8 ------------------- Since this test will be scheduled by 0Day to a random host that could have only a few cpus(2-8), enlarge the timeout to avoid a false NG report.
In practice, i tried to pin it to only one cpu by 'taskset 0x01 ./test_maps', and knew 10S is likely enough, but i still perfer to a larger value 30.
Reported-by: kernel test robot lkp@intel.com Signed-off-by: Li Zhijian lizhijian@cn.fujitsu.com Signed-off-by: Alexei Starovoitov ast@kernel.org Acked-by: Song Liu songliubraving@fb.com Link: https://lore.kernel.org/bpf/20210820015556.23276-2-lizhijian@cn.fujitsu.com
Signed-off-by: tangbin tangbin@cmss.chinamobile.com --- tools/testing/selftests/bpf/test_maps.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c index 9b552c0fc47d..e5e62cb57ff7 100644 --- a/tools/testing/selftests/bpf/test_maps.c +++ b/tools/testing/selftests/bpf/test_maps.c @@ -796,7 +796,7 @@ static void test_sockmap(int tasks, void *data)
FD_ZERO(&w); FD_SET(sfd[3], &w); - to.tv_sec = 1; + to.tv_sec = 30; to.tv_usec = 0; s = select(sfd[3] + 1, &w, NULL, NULL, &to); if (s == -1) {