Bug 242878 – AX ITM: Crash in WebKit::NSApplicationAccessibilityFocusedUIElement in isolated tree mode.

• Status: RESOLVED
• Resolution: FIXED
• Component: Accessibility

[Andres Gonzalez]

Thread 2 Crashed:: com.apple.accessibility.secondary
0   WebKit                                   0x6bad05ae7 std::__1::unique_ptr<WebCore::FocusController, std::__1::default_delete<WebCore::FocusController> >::operator*() const + 0 (unique_ptr.h:283) [inlined]
1   WebKit                                   0x6bad05ae7 WebCore::Page::focusController() const + 0 (Page.h:340) [inlined]
2   WebKit                                   0x6bad05ae7 WebKit::WebPage::windowAndWebPageAreFocused() const + 17 (WebPage.cpp:5325)
3   WebKit                                   0x6baafac53 WebKit::WebProcess::focusedWebPage() const + 77 (WebProcess.cpp:819)
4   WebKit                                   0x6ba9b6325 WebKit::NSApplicationAccessibilityFocusedUIElement(NSApplication*, objc_selector*) + 17 (WebProcessCocoa.mm:203)
5   AppKit                                0x7ff815f37923 NSAccessibilityGetObjectForAttributeUsingLegacyAPI + 337
6   AppKit                                0x7ff815f37085 NSAccessibilityGetObjectValueForAttribute + 2733
7   AppKit                                0x7ff815f36156 -[NSAccessibilityAttributeAccessorInfo getAttributeValue:forObject:] + 58
8   AppKit                                0x7ff8164e1129 ___NSAccessibilityEntryPointValueForAttribute_block_invoke.848 + 1435
9   AppKit                                0x7ff8164dc9cb NSAccessibilityPerformEntryPointObject + 16
10  AppKit                                0x7ff81616605e _NSAccessibilityEntryPointValueForAttribute + 168
11  AppKit                                0x7ff81628cdcc -[NSObject(NSAccessibilityInternal) _accessibilityValueForAttribute:clientError:] + 354
12  AppKit                                0x7ff8162cc0b1 -[NSApplication(NSApplicationAccessibility) _accessibilityValueForAttribute:clientError:] + 49
13  AppKit                                0x7ff81629255e CopyAppKitUIElementAttributeValueNoCatch + 98
14  AppKit                                0x7ff81628f463 CopyAttributeValue + 125
15  HIServices                            0x7ff81855e7b7 _AXXMIGCopyAttributeValue + 633
16  HIServices                            0x7ff8185812e5 _XCopyAttributeValue + 441
17  HIServices                            0x7ff81853f5f9 mshMIGPerform + 182
18  CoreFoundation                        0x7ff812d7d58d __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 41
19  CoreFoundation                        0x7ff812d7d4ca __CFRunLoopDoSource1 + 540
20  CoreFoundation                        0x7ff812d7c14b __CFRunLoopRun + 2705
21  CoreFoundation                        0x7ff812d7b040 CFRunLoopRunSpecific + 560
22  HIServices                            0x7ff818562729 axThreadEntry + 126
23  libsystem_pthread.dylib               0x7ff812ca1259 _pthread_start + 125
24  libsystem_pthread.dylib               0x7ff812c9cc7b thread_start + 15

[Radar WebKit Bug Importer]

<rdar://problem/97230221>

[Andres Gonzalez]

Created attachment 460991 [details]
Patch

[EWS]

commit-queue failed to commit attachment 460991 [details] to WebKit repository. To retry, please set cq+ flag again.

[EWS]

commit-queue failed to commit attachment 460991 [details] to WebKit repository. To retry, please set cq+ flag again.

[Andres Gonzalez]

Created attachment 461018 [details]
Patch

[EWS]

Commit message contains (OOPS!), blocking PR #None

[Andres Gonzalez]

Created attachment 461024 [details]
Patch

[EWS]

Committed 252629@main (8c187eff8eb0): <https://commits.webkit.org/252629@main>

All reviewed patches have been landed. Closing bug and clearing flags on attachment 461024 [details].