Adds a new allocation API to GWP-ASan that handles size+alignment
restrictions.
Reviewed By: cryptoad, eugenis
Differential Revision: https://reviews.llvm.org/D94830
Cleaning up some of the GWP-ASan code base:
- lots of headers didn't have the correct file name
- adding `#ifdef` guard to `utilities.h`
- correcting an `#ifdef` guard based on actual file name
- removing an extra `;`
- clang-format'ing the code (`-style=llvm`)
Differential Revision: https://reviews.llvm.org/D89721
Summary:
Fix up a slight bug with the crash handler API, where we say that we
return the size of the collected trace (instead of the size of the trace
that's returned) when the return buffer is too small, and the result is
truncated.
Also, as a result, patch up a small uninitialized memory bug.
Reviewers: morehouse, eugenis
Reviewed By: eugenis
Subscribers: #sanitizers
Tags: #sanitizers
Differential Revision: https://reviews.llvm.org/D84652
Summary:
Forewarning: This patch looks big in #LOC changed. I promise it's not that bad, it just moves a lot of content from one file to another. I've gone ahead and left inline comments on Phabricator for sections where this has happened.
This patch:
1. Introduces the crash handler API (crash_handler_api.h).
2. Moves information required for out-of-process crash handling into an AllocatorState. This is a trivially-copied POD struct that designed to be recovered from a deceased process, and used by the crash handler to create a GWP-ASan report (along with the other trivially-copied Metadata struct).
3. Implements the crash handler API using the AllocatorState and Metadata.
4. Adds tests for the crash handler.
5. Reimplements the (now optionally linked by the supporting allocator) in-process crash handler (i.e. the segv handler) using the new crash handler API.
6. Minor updates Scudo & Scudo Standalone to fix compatibility.
7. Changed capitalisation of errors (e.g. /s/Use after free/Use After Free).
Reviewers: cryptoad, eugenis, jfb
Reviewed By: eugenis
Subscribers: merge_guards_bot, pcc, jfb, dexonsmith, mgorny, cryptoad, #sanitizers, llvm-commits
Tags: #sanitizers, #llvm
Differential Revision: https://reviews.llvm.org/D73557
Mitch Phillips