On Tue, Sep 02, 2025 at 09:35:09AM -0700, Junio C Hamano wrote: > Patrick Steinhardt <ps@xxxxxx> writes: > > > The GitLab CI runners using Windows machines have realtime monitoring > > via Windows Defender enabled by default. This has just now started to > > cause issues in our CI jobs using Microsoft Visual Studio: > > > > Program 'meson.exe' failed to run: Operation did not complete successfully because the file contains a virus or > > potentially unwanted softwareAt line:356 char:1 > > + meson setup build --vsenv -Dperl=disabled -Dbackend_max_links=1 -Dcre ... > > + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~. > > At line:356 char:1 > > + meson setup build --vsenv -Dperl=disabled -Dbackend_max_links=1 -Dcre ... > > + ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > + CategoryInfo : ResourceUnavailable: (:) [], ApplicationFailedException > > + FullyQualifiedErrorId : NativeCommandFailed > > > > The detected issue is more likely than not completely bogus, but it > > breaks the jobs. > > > > Fix the issue by disabling realtime monitoring. Besides unbreaking CI, > > it also improves our build times a bit: > > > > - Building Git goes from 26 to 22 minutes. > > > > - Executing tests goes from ~1h for one slice of tests to ~30 minutes. > > Interesting observation. I didn't realize that we are shipping > virus or potentially unwanted software. > > Does the same issue exist on other forges (like GitHub Actions), I > wonder? I would assume that other forges already know to disable realtime monitoring by default. These are throwaway machines anyway, so there isn't much of a point in having it enabled in the first place. And as mentioned in the commit message, the Windows runners for GitLab CI are not exactly well-polished. Patrick