Full hotspot log attached.
C [CoreFoundation+0x8c2a] CFRelease+0x3a
C [CoreFoundation+0x31180] -[__NSArrayM dealloc]+0x130
C [libobjc.A.dylib+0xf03c] _ZN12_GLOBAL__N_119AutoreleasePoolPage3popEPv+0x1b2
C [CoreFoundation+0x31b05] _CFAutoreleasePoolPop+0x25
C [libawt_lwawt.dylib+0x293bc] Java_sun_lwawt_macosx_CImage_nativeCreateNSImageFromArrays+0x13f
j sun.lwawt.macosx.CImage.nativeCreateNSImageFromArrays([[I[I[I)J+0
j sun.lwawt.macosx.CImage.access$700([[I[I[I)J+3
j sun.lwawt.macosx.CImage$Creator.createFromImages(Ljava/util/List;)Lsun/lwawt/macosx/CImage;+142
j sun.lwawt.macosx.CPlatformWindow.getImageForTarget()Lsun/lwawt/macosx/CImage;+27
j sun.lwawt.macosx.CPlatformWindow.updateIconImages()V+6
j sun.lwawt.macosx.CPlatformWindow.setVisible(Z)V+128
j sun.lwawt.LWWindowPeer$1.run()V+11
Reproducible using the latest JDK8 build.
It's likely a regression of the fix for 7148275 (over-release).