[Webkit-unassigned] [Bug 193985] New: Make sure we have a frame before trying to access its loader
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Tue Jan 29 14:58:01 PST 2019
https://bugs.webkit.org/show_bug.cgi?id=193985
Bug ID: 193985
Summary: Make sure we have a frame before trying to access its
loader
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: WebCore Misc.
Assignee: webkit-unassigned at lists.webkit.org
Reporter: bfulgham at webkit.org
Early seeding of iOS 12.2 showed some nullptr dereferences in 'ResourceLoadObserver::logUserInteractionWithReducedTimeResolution'. Code inspection and review of the backtraces reveal that the code attempts to access the frame's loader, even if the frame is a nullptr.
We check for null frames in other uses of the document frame member, so should do so here as well.
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