** Description changed: - s390x: - https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac - /autopkgtest-xenial/xenial/s390x/l/linux/20191114_180123_738a0@/log.gz + == SRU Justification == + The psock_fanout test is not very stable, stress tests shows a high + fail rate here: + * X - 44 failures out of 100, with 4.4 kernel on a KVM node + * B - 33 failures out of 100, with 4.15 kernel on a KVM node + + This is because of the unrelated background traffic which should be + filtered out. + + Also, the error message, "ERROR: incorrect queue lengths", is a bit + misleading. It has been changed to "warning: incorrect queue lengths". + + == Fix == + 1. 2e7a7217 (selftests/net: cleanup unused parameter in psock_fanout) + 2. cc30c93f (selftests/net: ignore background traffic in psock_fanout) + + The first patch has already landed in Bionic, and it can be + cherry-picked into Xenial. + + The second one needs to be backported to Xenial, but it can be applied + to Bionic with git am -C2. + + == Test == + Patch tested directly on 4.4 / 4.15 KVM nodes. + + Stress tested 100 times with: + i=0 + for idx in $(seq 1 100) + do + sudo ./psock_fanout &> /dev/null + [ $? != 0 ] && i=$((i+1)) + done + echo $i + + All tests have passed. + + == Regression Potential == + Low, change limited to testing tools, not affecting actual kernel + functionality. + + + == Original Bug Report == + s390x: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-xenial/xenial/s390x/l/linux/20191114_180123_738a0@/log.gz Here's the relevant excerpt: 17:34:26 DEBUG| [stdout] -------------------- 17:34:26 DEBUG| [stdout] running psock_fanout test 17:34:26 DEBUG| [stdout] -------------------- 17:34:26 ERROR| [stderr] test: control single socket 17:34:27 ERROR| [stderr] test: control multiple sockets 17:34:27 ERROR| [stderr] test: datapath 0x0 17:34:27 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:27 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:27 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:27 ERROR| [stderr] info: count=20,0, expect=20,5 17:34:27 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:27 ERROR| [stderr] info: trying alternate ports (4) 17:34:27 ERROR| [stderr] test: datapath 0x0 17:34:27 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:27 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:27 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:27 ERROR| [stderr] info: count=20,0, expect=20,5 17:34:27 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:27 ERROR| [stderr] info: trying alternate ports (3) 17:34:27 ERROR| [stderr] test: datapath 0x0 17:34:27 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:27 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:27 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:27 ERROR| [stderr] info: count=20,0, expect=20,5 17:34:27 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:27 ERROR| [stderr] info: trying alternate ports (2) 17:34:27 ERROR| [stderr] test: datapath 0x0 17:34:27 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:27 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:27 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:27 ERROR| [stderr] info: count=20,0, expect=20,5 17:34:27 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:27 ERROR| [stderr] info: trying alternate ports (1) 17:34:27 ERROR| [stderr] test: datapath 0x0 17:34:28 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:28 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] info: count=20,0, expect=20,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] info: trying alternate ports (0) 17:34:28 ERROR| [stderr] test: datapath 0x0 17:34:28 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:28 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] info: count=20,0, expect=20,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] test: datapath 0x1000 17:34:28 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:28 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] info: count=20,0, expect=20,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] info: trying alternate ports (0) 17:34:28 ERROR| [stderr] test: datapath 0x0 17:34:28 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:28 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] info: count=20,0, expect=20,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] test: datapath 0x1000 17:34:28 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:28 ERROR| [stderr] info: count=20,0, expect=15,5 17:34:28 ERROR| [stderr] ERROR: incorrect queue lengths 17:34:28 ERROR| [stderr] info: count=20,15, expect=20,15 17:34:28 ERROR| [stderr] test: datapath 0x1 17:34:28 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:28 ERROR| [stderr] info: count=10,10, expect=10,10 17:34:28 ERROR| [stderr] info: count=18,17, expect=18,17 17:34:28 ERROR| [stderr] test: datapath 0x3 17:34:28 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:28 ERROR| [stderr] info: count=15,5, expect=15,5 17:34:28 ERROR| [stderr] info: count=20,15, expect=20,15 17:34:28 ERROR| [stderr] test: datapath 0x6 17:34:29 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:29 ERROR| [stderr] info: count=5,15, expect=15,5 17:34:29 ERROR| [stderr] info: count=20,15, expect=15,20 17:34:29 ERROR| [stderr] test: datapath 0x7 17:34:29 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:29 ERROR| [stderr] info: count=5,15, expect=15,5 17:34:29 ERROR| [stderr] info: count=20,15, expect=15,20 17:34:29 ERROR| [stderr] test: datapath 0x2 17:34:29 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:29 ERROR| [stderr] info: count=20,0, expect=20,0 17:34:29 ERROR| [stderr] info: count=20,0, expect=20,0 17:34:29 ERROR| [stderr] test: datapath 0x2 17:34:29 ERROR| [stderr] info: count=0,0, expect=0,0 17:34:29 ERROR| [stderr] info: count=0,20, expect=0,20 17:34:29 ERROR| [stderr] info: count=0,20, expect=0,20 17:34:29 DEBUG| [stdout] [FAIL]
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1853375 Title: net selftest psock_fanout fails on xenial s390x due to incorrect queue lengths To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1853375/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
