On 05/07/2020 16:26, Patric Hedlin wrote:
> Issue: https://bugs.openjdk.java.net/browse/JDK-8247762
> Webrev: http://cr.openjdk.java.net/~phedlin/tr8247762/
>
>
> AARCH64CurrentFrameGuess.run() may loop indefinitely in a bad
> stack-walk. This is JDK-8231635 applied to AArch64.
141 Frame oldFrame = frame;
142 frame = frame.sender(map);
143 if (frame.getSP().lessThanOrEqual(oldFrame.getSP())) {
144 // Frame points to itself or to a location in the wrong
direction.
145 // Break the loop and move on to next offset.
146 if (DEBUG) {
147 System.out.println("CurrentFrameGuess: frame <=
oldFrame: " + frame);
148 }
149 break;
150 }
151 }
OK, that looks like a reasonable thing to do, but I would wonder how the stack
got
into that mess.
--
Andrew Haley (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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