87028 2012-05-21 10:16:40 -0700 Chromium AX: Crash when menulist adds selected option via document.write 2012-05-22 08:23:55 -0700 1 1 1 Unclassified WebKit Accessibility 528+ (Nightly build) Unspecified Unspecified RESOLVED FIXED P2 Normal --- 1 dmazzoni dmazzoni cfleizach dtseng eric tkent webkit.review.bot oldest_to_newest 629229 0 dmazzoni 2012-05-21 10:16:40 -0700 Somewhat obscure, but this happened "in the wild" - if you add a selected option inside of a <select> element using document.write, AccessibilityMenuListPopup::didUpdateActiveOption gets called with the new index before the children of the AccessibilityMenuListPopup get updated, leading to a crash. I can only reproduce on Chromium because on Mac, the AccessibilityMenuListPopup is ignored if the pop-up is closed. Should repro on Windows in theory, maybe GTK. Here's the repro - the crash only happens if the AccessibilityMenuListPopup is actually created before the script runs; I can trigger this on Chromium by adding a delay to the JavaScript and tabbing to the control (while accessibility is on) before the script runs. When the script does run it triggers the crash. <select id="menulist"> <option>1</option> <script src="data:text/javascript,document.write('<option selected>2');"></script> </select> 629281 1 143063 dmazzoni 2012-05-21 11:07:28 -0700 Created attachment 143063 Patch 629288 2 143063 cfleizach 2012-05-21 11:19:28 -0700 Comment on attachment 143063 Patch View in context: https://bugs.webkit.org/attachment.cgi?id=143063&action=review > Source/WebCore/rendering/RenderMenuList.cpp:124 > + document()->axObjectCache()->childrenChanged(this); what about removeChild? 629361 3 143074 dmazzoni 2012-05-21 12:13:58 -0700 Created attachment 143074 Patch 629370 4 dmazzoni 2012-05-21 12:17:44 -0700 (In reply to comment #2) > what about removeChild? Good thought, but I couldn't come up with an case where removeChild didn't work. I updated the test to cover removeChild, but it already worked correctly so no more code changes were needed. 629986 5 143074 cfleizach 2012-05-21 23:39:51 -0700 Comment on attachment 143074 Patch looks good 630389 6 143074 webkit.review.bot 2012-05-22 08:23:51 -0700 Comment on attachment 143074 Patch Clearing flags on attachment: 143074 Committed r117976: <http://trac.webkit.org/changeset/117976> 630390 7 webkit.review.bot 2012-05-22 08:23:55 -0700 All reviewed patches have been landed. Closing bug. 143063 2012-05-21 11:07:28 -0700 2012-05-21 12:13:56 -0700 Patch bug-87028-20120521110727.patch text/plain 4264 dmazzoni U3VidmVyc2lvbiBSZXZpc2lvbjogMTE3NjAyCmRpZmYgLS1naXQgYS9Tb3VyY2UvV2ViQ29yZS9D aGFuZ2VMb2cgYi9Tb3VyY2UvV2ViQ29yZS9DaGFuZ2VMb2cKaW5kZXggNmVlZjE4YzFlOThkMDYw YWZkZmEzMDlkOTJkYTZlYzgzM2JlMmUyOC4uOTJkZmI0OTVmMWI0NDM1MDVjMDIyMmNmYjYwMmQz ZTRlZGUwZDY2ZSAxMDA2NDQKLS0tIGEvU291cmNlL1dlYkNvcmUvQ2hhbmdlTG9nCisrKyBiL1Nv dXJjZS9XZWJDb3JlL0NoYW5nZUxvZwpAQCAtMSwzICsxLDE1IEBACisyMDEyLTA1LTIxICBEb21p bmljIE1henpvbmkgIDxkbWF6em9uaUBnb29nbGUuY29tPgorCisgICAgICAgIENocm9taXVtIEFY OiBDcmFzaCB3aGVuIG1lbnVsaXN0IGFkZHMgc2VsZWN0ZWQgb3B0aW9uIHZpYSBkb2N1bWVudC53 cml0ZQorICAgICAgICBodHRwczovL2J1Z3Mud2Via2l0Lm9yZy9zaG93X2J1Zy5jZ2k/aWQ9ODcw MjgKKworICAgICAgICBSZXZpZXdlZCBieSBOT0JPRFkgKE9PUFMhKS4KKworICAgICAgICBUZXN0 OiBwbGF0Zm9ybS9jaHJvbWl1bS9hY2Nlc3NpYmlsaXR5L2FkZC10by1tZW51LWxpc3QtY3Jhc2hl cy5odG1sCisKKyAgICAgICAgKiByZW5kZXJpbmcvUmVuZGVyTWVudUxpc3QuY3BwOgorICAgICAg 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