Bug 241435

Summary:

RenderImageResource::setCachedImage may produce a null renderer

Product:

WebKit

Reporter:

alan <zalan>

Component:

Layout and Rendering

Assignee:

alan <zalan>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

bfulgham, changseok, dylan, esprehn+autocc, ews-watchlist, glenn, kondapallykalyan, pdr, simon.fraser, zalan

Priority:

Keywords:

InRadar

Version:

WebKit Nightly Build

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
[fast-cq]Patch	none

alan

Reported 2022-06-08 13:33:29 PDT

<rdar://93714107>

Attachments
[fast-cq]Patch (1.26 KB, patch) 2022-06-08 13:37 PDT, alan	no flags	Details Formatted Diff Diff
View All Add attachment proposed patch, testcase, etc.

alan

Comment 1 2022-06-08 13:37:42 PDT

Created attachment 460101 [details] [fast-cq]Patch

Brent Fulgham

Comment 2 2022-06-08 13:42:09 PDT

Comment on attachment 460101 [details] [fast-cq]Patch View in context: https://bugs.webkit.org/attachment.cgi?id=460101&action=review > Source/WebCore/rendering/RenderImageResource.cpp:67 > + // removeClient may have destroyed the renderer. Don't we still want to set the m_cachedimage value below (even though the existing renderer was possible destroyed)?

Brent Fulgham

Comment 3 2022-06-08 13:51:09 PDT

Comment on attachment 460101 [details] [fast-cq]Patch View in context: https://bugs.webkit.org/attachment.cgi?id=460101&action=review >> Source/WebCore/rendering/RenderImageResource.cpp:67 >> + // removeClient may have destroyed the renderer. > > Don't we still want to set the m_cachedimage value below (even though the existing renderer was possible destroyed)? I spoke to Alan offline. If 'm_renderer' is nullptr, we expect 'this' to be nullptr as well, so we should early return.

EWS

Comment 4 2022-06-08 14:02:24 PDT

Committed r295393 (251399@main): <https://commits.webkit.org/251399@main> All reviewed patches have been landed. Closing bug and clearing flags on attachment 460101 [details].

Antoine Quint

Comment 5 2022-06-14 08:15:07 PDT

*** Bug 241512 has been marked as a duplicate of this bug. ***

Simon Fraser (smfr)

Comment 6 2022-06-14 08:49:18 PDT

Bug 241512 has a user-visible symptom, suggesting that we could create a layout test for this patch.

alan

Comment 7 2022-06-14 09:33:25 PDT

(In reply to Simon Fraser (smfr) from comment #6) > Bug 241512 has a user-visible symptom, suggesting that we could create a > layout test for this patch. That would be awesome given the speculative nature of this fix.

alan

Comment 8 2022-06-14 09:41:29 PDT

Yeah I can repro it (and it's <rdar://94689000>)

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