Hi, Patricia. Can you clarify if you always need to run the hotplug test before reuseport_bpf_cpu in order to reproduce? I wonder what is the state that the hotplug test leaves the system in? How is it being run? The makefile runs it with the -a option, which in the systems I have available would fail to offline the last CPU (which is expected, different behavior from x86, where cpu0 cannot be offlined). Running it without any options would only offline the last CPU and online it again.
I tried looking for differences between our kernels and 5.11.22 and the only cpuset changes I noticed were already present in the kernel you have just tested, and they were on paths unrelated to hotplug or BPF, so I am still baffled as to the real differences here. And given the different systems fail differently, it looks like this will require a dump or xmon so we can debug it. Thanks for all the help. I may ask for system access next week in order to help there. Cascardo. -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1927076 Title: IPv6 TCP in reuseport_bpf_cpu from ubuntu_kernel_selftests/net crash P8 node entei on 5.8 kernel (Oops: Exception in kernel mode, sig: 4 [#1]) Status in ubuntu-kernel-tests: New Status in The Ubuntu-power-systems project: Confirmed Status in linux package in Ubuntu: Incomplete Status in linux source package in Hirsute: New Bug description: It looks like our P8 node "entei" tend to fail with the IPv6 TCP test from reuseport_bpf_cpu in ubuntu_kernel_selftests/net on 5.8 kernels: # send cpu 119, receive socket 119 # send cpu 121, receive socket 121 # send cpu 123, receive socket 123 # send cpu 125, receive socket 125 # send cpu 127, receive socket 127 # ---- IPv6 TCP ---- publish-job-status: using request.json It failed silently here, this can be 100% reproduced with Groovy 5.8 and Focal 5.8. This will cause the ubuntu_kernel_selftests being interrupted, the test result for other tests cannot be processed to our result page. Please find attachment for the complete "net" test result on this node with Groovy 5.8.0-52.59 Add the kqa-blocker tag as this might needs to be manually verified. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-kernel-tests/+bug/1927076/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
