Hi,
as part of the CI we are running the fast-tests after every build in Debian and Ubuntu [1][2][3]. As part of this we happened to see that in this environment some issues occur.

This issue is about 4 tests which fail reliably in the Ubuntu autopkgtest environment.

15/58 DPDK:fast-tests / hash_autotest            FAIL           0.47s (killed by signal 6 SIGABRT)
22/58 DPDK:fast-tests / per_lcore_autotest       FAIL           0.22s (exit status 255 or signal 127 SIGinvalid)
24/58 DPDK:fast-tests / rcu_qsbr_autotest        FAIL           0.33s (killed by signal 6 SIGABRT)
36/58 DPDK:fast-tests / table_autotest           FAIL           1.21s (killed by signal 9 SIGKILL)

Detailed logs are at [4][5][6].
Interstingly the very same tests in a rather similar environment in Dbeian do not fail [7][8][9].
The difference might be the used compiler/toolchain versions and defaults.

[1]: https://packaging.ubuntu.com/html/auto-pkg-test.html
[2]: https://autopkgtest.ubuntu.com/
[3]: https://ci.debian.net/
[4]: https://autopkgtest.ubuntu.com/results/autopkgtest-impish/impish/ppc64el/d/dpdk/20210712_095836_75b36@/log.gz
[5]: https://autopkgtest.ubuntu.com/results/autopkgtest-impish/impish/amd64/d/dpdk/20210712_100606_75b36@/log.gz
[6]: https://autopkgtest.ubuntu.com/results/autopkgtest-impish/impish/arm64/d/dpdk/20210712_100428_a7086@/log.gz
[7]: https://ci.debian.net/data/autopkgtest/unstable/ppc64el/d/dpdk/13543407/log.gz
[8]: https://ci.debian.net/data/autopkgtest/unstable/amd64/d/dpdk/13543196/log.gz
[9]: https://ci.debian.net/data/autopkgtest/unstable/arm64/d/dpdk/13543256/log.gz