Branch: refs/heads/main
Home: https://github.com/WebKit/WebKit
Commit: af93d301ac12affa63d7e673198bef85f0dbd16a
https://github.com/WebKit/WebKit/commit/af93d301ac12affa63d7e673198bef85f0dbd16a
Author: Rupin Mittal <[email protected]>
Date: 2026-04-20 (Mon, 20 Apr 2026)
Changed paths:
M Source/WebKit/UIProcess/Cocoa/ProcessAssertionCocoa.mm
Log Message:
-----------
StabilityTracer: NanoMail at RunningBoardServices: -[RBSAssertion dealloc]
https://bugs.webkit.org/show_bug.cgi?id=312804
rdar://174907623
Reviewed by Ben Nham.
[WKProcessAssertionBackgroundTaskManager _updateBackgroundTask] calls:
_backgroundTask = adoptNS([[RBSAssertion alloc] initWithExplanation:
@"WebKit UIProcess background task" target:target
attributes:@[domainAttribute]]);
This line decrements the ref-count of the RBSAssertion that is currenly held by
_backgroundTask. According the crash log, it looks like the ref-count is
dropping
to zero since [RBSAssertion dealloc] is called. The crash log says we crash
because "Dealloc called before invalidate for assertion <RBSAssertion...".
So we need to call invalidate on the the existing _backgroundTask before this
line decrements its ref-count. ProcessAssertionCocoa already has a function that
does this called _releaseBackgroundTask, so we call that.
This a speculative fix.
* Source/WebKit/UIProcess/Cocoa/ProcessAssertionCocoa.mm:
(-[WKProcessAssertionBackgroundTaskManager _updateBackgroundTask]):
Canonical link: https://commits.webkit.org/311649@main
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