Currently syz-runtest fails to start because -debug flag is defined
both in syz-runtest and ipcconfig.
But moving sandbox functions we prevent ipcconfig from being imported into syz-runtest.
Rewind kmemleak fd before reading it second time,
otherwise we will read truncated reports.
Auto-learn what leak reports we've already seen
and ignore them in future. This is required because
there are some false positives and some fire too frequently.
So now we will hit each leak only once per manager run,
but we still will try to reproduce them.
executor: add support for android_untrusted_app sandbox
This adds a new sandbox type, 'android_untrusted_app', which restricts
syz-executor to the privileges which are available to third-party applications,
e.g. those installed from the Google Play store.
In particular, this uses the UID space reserved for applications (instead of
the 'setuid' sandbox, which uses the traditional 'nobody' user / 65534)
as well as a set of groups which the Android-specific kernels are aware of,
and finally ensures that the SELinux context is set appropriately.
Dependencies on libselinux are avoided by manually implementing the few
functions that are needed to change the context of the current process,
and arbitrary files. The underlying mechanisms are relatively simple.
Fixesgoogle/syzkaller#643
Test: make presubmit
Bug: http://b/112900774
