Hi Pirmin, On Thu, Jan 16, 2025 at 10:34:40AM +0100, Pirmin Duss via users wrote: > Hello Genodians > > Since we rolled out the update to 24.11 we see the above message about once > or twicw a day in the logs of our testing pipeline. > > It happens on different hardware (Up-Xtreme and imx8mp_iot_gate in the last > two days) and in different run scripts. The run scripts range from a fairly > simple TPM run script to complicated run scripts that test the resilience of > the operating system to stopping/starting of whole subsystems and reboots. > > Currently we don't have a case where this happens reproducible. It could be > related to https://github.com/genodelabs/genode/issues/5382 but also > something completely different.
Unfortunately, above message - although quite alerting - does not provide much information about the reason of the exception inside the kernel. It might be an MMU-fault or a system-call triggered by the kernel. The latter was actually the case in issue 5382 you have referred to. As a potential consequence of C++ exception handling in the C++ support library a kernel call was triggered. We're on the way to remove all C++ exception out of core and the base library. If this is finally the case, we can build/link base-hw's core, which implicitely is the kernel image, without C++ exception support, and thereby can guarantee its (system call inside kernel) absence. Nonetheless, after looking at the remaining throws, we are almost sure there is no C++ exception left in the kernel context of base-hw. To make it short: I don't think its related to above issue. > > How could we narrow down the issue and gather logs to identify the cause of > it? You need some more information about the kernel context, which triggered the recursive kernel entry. I was already planning to provide code to do so at the end of last year, but was busy otherwise. Now, I've opened an issue: https://github.com/genodelabs/genode/issues/5425 to document further progress about it. I'm up to approach this very soon. Regards Stefan > > Kind regards, > Pirmin > > > _______________________________________________ > users mailing list -- users@lists.genode.org > To unsubscribe send an email to users-le...@lists.genode.org > Archived at > https://lists.genode.org/mailman3/hyperkitty/list/users@lists.genode.org/message/QVZMT2HRTDBSQRAZGIN5KUQPSHTEXAPM/ _______________________________________________ users mailing list -- users@lists.genode.org To unsubscribe send an email to users-le...@lists.genode.org Archived at https://lists.genode.org/mailman3/hyperkitty/list/users@lists.genode.org/message/MQKUJLZ5ARZZLKDZORPI63S7DKGHYDIK/
