I suspect the "ERROR: testbed failure: testbed auxverb failed with exit code 255" messages are only the symptom and not the cause of the failures.
All the arm64 failures are consistent and the last tests executed are always the following: [...] 19:05:33 INFO | START ubuntu_kernel_selftests.ftrace ubuntu_kernel_selftests.ftrace timestamp=1600715133 timeout=1800 localtime=Sep 21 19:05:33 [...] 19:06:44 DEBUG| [stdout] # [46] Create/delete multiprobe on kprobe event [PASS] 19:06:46 DEBUG| [stdout] # [47] Kprobe event parser error log check [PASS] 19:06:46 DEBUG| [stdout] # [48] Kretprobe dynamic event with arguments [PASS] 19:06:47 DEBUG| [stdout] # [49] Kretprobe dynamic event with maxactive [PASS] autopkgtest-virt-ssh [19:26:52]: ------- nova console-log 939a7972-4eb7-4814-a489-046ce015ad8e (adt-groovy-arm64-linux-20200921-123119) ------ [...] >From comment #2 on bug 1549425: "The auxverb is "ssh" in this case, and it exiting with 255 means that the ssh connection was interrupted." So I suspect some ftrace test is causing a kernel hang, killing the ssh connection. I don't see anything suspicious on the adt console logs though. We might need to try to reproduce this manually to get some more information. -- 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/1918226 Title: testbed auxverb failed with exit code 255 with linux on Groovy ADT failure Status in linux package in Ubuntu: Invalid Status in linux source package in Groovy: Confirmed Bug description: Testing failed on: arm64: https://objectstorage.prodstack4-5.canonical.com/v1/AUTH_77e2ada1e7a84929a74ba3b87153c0ac/autopkgtest-groovy/groovy/arm64/l/linux/20210308_234307_e716b@/log.gz Looks to be a flaky test with this error occurring frequently. This is not a regression. Found a previously reported (expired) bug with the same error: https://launchpad.net/bugs/1549425 [ 6606.751232] audit: backlog limit Creating nova instance adt-groovy-arm64-linux-20210308-143145 from image adt/ubuntu-groovy-arm64-server-20210308.img (UUID 1cfb02a6-bf88-46bb-a8f1-3c6589cd939e)... Creating nova instance adt-groovy-arm64-linux-20210308-143145 from image adt/ubuntu-groovy-arm64-server-20210308.img (UUID 1cfb02a6-bf88-46bb-a8f1-3c6589cd939e)... autopkgtest [23:42:55]: ERROR: testbed failure: testbed auxverb failed with exit code 255 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1918226/+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
