source: https://bugzilla.mozilla.org/show_bug.cgi?id=1735345#c18 https://bugzilla.mozilla.org/show_bug.cgi?id=1735345#c18 --- Markus Stange [:mstange] Commen

source: https://bugzilla.mozilla.org/show_bug.cgi?id=1735345#c18 https://bugzilla.mozilla.org/show_bug.cgi?id=1735345#c18 --- Markus Stange [:mstange] Comment 18 • 1 month ago • Edited I've filed FB9704004 about this. -[NSCursor set] appears to be leaking images, causes 70GB leak in Firefox This appears to be a regression in one of the recent macOS Monterey Betas. Two Firefox users reported a very large memory usage. We’re tracking this in https://bugzilla.mozilla.org/show_bug.cgi?id=1735345 . We have a memory report which blames the allocations on this stack: #02: _malloc_zone_malloc[/usr/lib/system/libsystem_malloc.dylib +0x1e770] #03: createImageWithSizeRenderInstructions[/System/Library/PrivateFrameworks/AccessibilitySupport.framework/Versions/A/Frameworks/AccessibilityFoundation.framework/Versions/A/AccessibilityFoundation +0x7430] #04: -[_AXFMouseCursorGeneratorLayer _createImageForScale:color:][/System/Library/PrivateFrameworks/AccessibilitySupport.framework/Versions/A/Frameworks/AccessibilityFoundation.framework/Versions/A/AccessibilityFoundation +0x66e0] #05: -[_AXFMouseCursorGenerator createImageForScale:][/System/Library/PrivateFrameworks/AccessibilitySupport.framework/Versions/A/Frameworks/AccessibilityFoundation.framework/Versions/A/AccessibilityFoundation +0x5064] #06: -[_AXFMouseCursorGenerator _registerWithName:connection:isGlobal:setActive:seed:][/System/Library/PrivateFrameworks/AccessibilitySupport.framework/Versions/A/Frameworks/AccessibilityFoundation.framework/Versions/A/AccessibilityFoundation +0x5418] #07: _AXFCursorSetAndReturnSeed[/System/Library/PrivateFrameworks/AccessibilitySupport.framework/Versions/A/Frameworks/AccessibilityFoundation.framework/Versions/A/AccessibilityFoundation +0x70b8] #08: _AXInterfaceCursorSetAndReturnSeed[/System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices +0x2d1d8] #09: -[NSCursor _reallySet][/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit +0x1e01d0] #10: -[NSCursor set][/System/Library/Frameworks/AppKit.framework/Versions/C/AppKit +0x1e0050] Firefox calls -[NSCursor set] very frequently during mouse motions, so many leaked images might accumulate.