Manager has already checked what features are present on the target.
But if we detected that, say, USB is missing, we still enabled it
in the starting csource options. This is wrong, increases configuration
minimization time and may lead to some obscure bugs.
HostFuzzer targets require that we cross-compile the csource tests and
then copy them to the target system. The code to copy files is
currently missing from syz-runtest; also, at least for Fuchsia (which
uses HostFuzzer mode), cross-compiling is non-trivial.
This is useful for integrating into Fuchsia's build system, where we
need to be able to run syz-sysgen with a read-only source directory,
and emit the output files elsewhere.
I though maybe we need special handling for them:
stop at kmem_cache_alloc function. But now I am not sure.
This can also be an infinite loop which calls kmalloc/kfree.
Let's not change code for now, just fix things with tests
(this is a good representative set).
On top of syz-env it provides akaros/fuchsia/netbsd toolchains and gcloud sdk.
With this it's possible to run dashboard/app tests on CI and locally
and test executor build and pkg/{csource,cover} for these OSes.
Update #1765
Originally, syz-manager confusingly logs corpusSignal as "cover".
Change syz-manager's logging to output corpusSignal, corpusCover
and maxSignal.
Add a field in Stats to store maxSignal.
If we produce no guilty file at all, the report is mailed only to LKML,
which is mostly equivalent to mailing to nobody.
If we skip all files, return the first one.
Support SOURCEDIR_GOOS env vars as an alternative to SOURCEDIR.
SOURCEDIR_GOOS takes precedence.
This allows to test several OSes at the same time.
Update #1765
This commit makes syzkaller build the kasan variant of fuchsia by
default.
Support for kernel address sanitizer has landed in fuchsia since commit
`54c5edfc37afe7294256552cefefca64c6ce7e94`[0].
[0]: https://fxrev.dev/383323
Test various combinations of no debug info,
no coverage instrumentation, no PCs, bad PCs, good PCs,
and what errors we produce for these.
Also implement support for cross-arch reports:
prefix objdump with cross-compile prefix
(e.g. aarch64-linux-gnu-objdump instead of objdump).
We chosen a non-deterministic resource in createResource
due to map iteration order.
This is caught by existing TestDeterminism,
but just very infrequently.
