Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: 34584723de5b46e01b218df327f43ebd3afb9028
https://github.com/WebKit/WebKit/commit/34584723de5b46e01b218df327f43ebd3afb9028
Author: Marcus Plutowski <[email protected]>
Date: 2025-10-03 (Fri, 03 Oct 2025)
Changed paths:
M Source/bmalloc/libpas/src/libpas/pas_mte.h
M Source/bmalloc/libpas/src/libpas/pas_mte_config.h
Log Message:
-----------
[libpas] Enable MTE Retag-on-Scavenge in privileged processes
https://bugs.webkit.org/show_bug.cgi?id=300151
rdar://156723433
Reviewed by Mark Lam.
This is an MTE hardening feature which helps catch use-after-frees by
retagging objects as we scavenge them. It has a significant performance
cost, but as long as we only enable it for privileged processes that
cost disappears.
Canonical link: https://commits.webkit.org/300987@main
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