[chromium-dev] --no-sandbox flag on swarming

[Roberto M. Carrillo-Navarrete]

Roberto M. Carrillo-Navarrete <***@chromium.org>
5:17 PM (29 minutes ago)
to chromium-dev, chops-cats
Hi Chromium-dev,

I am trying to run some test targets with the --no-sandbox flag, and I get
some errors on swarming that are not present when I run the test locally.
The errors I am referring to look like:
1128/152840.910279:ERROR:nacl_helper_linux.cc(310)]
NaCl helper process running without a sandbox!
Most likely you need to configure your SUID sandbox correctly

As a bit of background, I am trying to run test targets built with clang's
code coverage instrumentation and then processing the profiling data on
recipes. The reason why I am trying to use --no-sandbox is because
otherwise the clang instrumentation fails to write the profiling output
file due to an "operation not permitted error".

I am confused because the behavior is different between my workstation and
a swarming host, when the target has been built and is being run using the
same options (gn args, command line flags, etc.) as far as I can tell.

What am I missing?

Thanks,

Roberto.