Hi, Maxim Cournoyer <maxim.courno...@gmail.com> skribis:
> Ludovic Courtès <l...@gnu.org> writes: > >> Ludovic Courtès <l...@gnu.org> skribis: >> >>> /var/log/cuirass-remote-server.log: >>> >>> 2023-10-23 00:26:06 0 items queued for eventual download >>> 2023-10-23 00:26:55 period update: 0 resumable, 0 failed builds. >>> 2023-10-23 00:26:58 error: failed to start worker/database proxy: Invalid >>> argument >> >> EINVAL here most likely comes from replying to a sender with invalid ID, >> due to ZMQ_ROUTER_MANDATORY, exactly what Cuirass commit >> 40f70d28aed55c404cca6a0760860fb4942e6bee fixed and aimed to catch. > > Thanks for picking up the investigation. Does that mean that the above > fix was partial and that there likely is a use after free somewhere > else? Yes, the fix in Cuirass above was insufficient, though you had to be truly unlucky for use-after-free to happen this quickly. Anyway, I had also proposed a fix in guile-simple-zmq, which the upgrade in Guix commit 04215779baaa21f10bd5f20999761dc506e449d8 pulls in. I have yet to reconfigure on berlin. In the meantime I’ll look at the worker side of this issue. Ludo’.
