This simplifies some of the logic and removes the need to pass an
Arch value to functions that should already know about the arch
it is operating on.
Includes fixes for debuggerd/libbacktrace.
Added new unit tests to cover new cases.
Test: All unit tests pass.
Test: Faked unwinder failing to verify debuggerd error messages display
Test: properly in backtrace and tombstone.
Change-Id: I439fcae0695befcfb1cb4c0a786cc74949d33425
This is not possible in the real world, so prevent this particular case
to avoid leaking memory and any other issues.
Bug: 165619316
Test: Verified the fuzzer test case that caused a leak no longer leaks.
Change-Id: I352b3bd21a4931432e015af89c256ddbcdaa1070
The fuzzer was creating individual maps that overlapped with other maps.
Since this is not possible in the real world unless the kernel is broken,
do not let the fuzzer do this. This resulted in memory leaks, because some
parts of the code have this assumption baked in.
Bug: 160895854
Test: Ran fuzzer test case that leaked memory and verified it no longer does.
Change-Id: I9f3c1e28781093b041b747e1566fb51d40d2bf71
Adds a fuzzer for Unwinder. This will likely cover a large portion of the library, as it uses many of the library's features
in the process of setting up the Unwinder. Hopefully this, combined with the calls Unwinder makes internally, will provide
sufficient coverage.
Rough coverage estimate (this is drastically lower than the true number due to shared libraries): 6.6%
Test: Ran on device for a few hours
Signed-off-by: Dylan Katz <dylan.katz@leviathansecurity.com>
Change-Id: I813e204df595ff38dccfb73be7fff5c080aaa043
