Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: adb333973f889119e257de144171ced635f7fbe3
https://github.com/WebKit/WebKit/commit/adb333973f889119e257de144171ced635f7fbe3
Author: Dylan Conway <[email protected]>
Date: 2026-01-25 (Sun, 25 Jan 2026)
Changed paths:
M Source/bmalloc/bmalloc/VMAllocate.h
Log Message:
-----------
[bmalloc] multiple regions vmZeroAndPurge windows
https://bugs.webkit.org/show_bug.cgi?id=306192
Reviewed by Sosuke Suzuki and Yusuke Suzuki.
`DiscardVirtualMemory` does not guarantee the memory is zeroed so
switched to VirtualFree(MEM_DECOMMIT) and VirtualAlloc(MEM_COMMIT).
Also uses `VirtualQuery` to handle input memory spanning multiple
regions. This would crash previously on the RELEASE_BASSERT after
`DiscardVirtualMemory`.
I'm not sure how to add a test for this yet. I was able to repro with
Bun running astro-post.test.js on Windows with libpas enabled in JSC.
Probably related to WASM requesting some memory
https://github.com/oven-sh/bun/blob/main/test/js/third_party/astro/astro-post.test.js
* Source/bmalloc/bmalloc/VMAllocate.h:
(bmalloc::vmZeroAndPurge):
Canonical link: https://commits.webkit.org/306171@main
To unsubscribe from these emails, change your notification settings at
https://github.com/WebKit/WebKit/settings/notifications
