Mitch Phillips e78b64df98 [Scudo] Use GWP-ASan's aligned allocations and fixup postalloc hooks. ... This patch does a few cleanup things: 1. The non-standalone scudo has a problem where GWP-ASan allocations may not meet alignment requirements where Scudo was requested to have alignment >= 16. Use the new GWP-ASan API to fix this. 2. The standalone variant loses some debugging information inside of GWP-ASan because we ask GWP-ASan to allocate an aligned size in the frontend. This means reports end up with 'UaF on a 16-byte allocation' for a 1-byte allocation with 16-byte alignment. Also use the new API to fix this. 3. Add post-alloc hooks for GWP-ASan intercepted allocations, and add stats tracking for GWP-ASan allocations. 4. Add a small test that checks the alignment of the frontend allocator, so that it can be used under GWP-ASan torture mode. 5. Add GWP-ASan torture mode as a testing configuration to catch these regressions. Depends on D94830, D95889. Reviewed By: cryptoad Differential Revision: https://reviews.llvm.org/D95884		2021-05-10 12:56:18 -07:00
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gwp_asan	[Scudo] Use GWP-ASan's aligned allocations and fixup postalloc hooks.	2021-05-10 12:56:18 -07:00
lit.site.cfg.py.in	[scudo][standalone] Restore GWP-ASan flag parsing	2021-01-27 12:35:34 -08:00