[8u] Request for approval and review: 8075805: Crash while trying to release CompiledICHolder (original) (raw)

Tobias Hartmann tobias.hartmann at oracle.com
Wed Oct 7 14:19:48 UTC 2015

Hi Vladimir,

On 07.10.2015 14:43, Vladimir Kozlov wrote:

Changes are matching jdk9 changes. Tobias, should we backport 8058737 changes too? Next code is missing in 8u now:

+ MutexLocker cl(CompiledIClock); + nm->clearicstubs(); It was P2. Why we did not backport it?

Yes, you are right. It seems like I missed to backport that one because it never showed up with 8. However, we should backport it. The patch for JDK-8058737 applies cleanly. I updated the other webrevs:

JDK-8058737: CodeCache::find_blob fails with 'unsafe access to zombie method' https://bugs.openjdk.java.net/browse/JDK-8058737 http://cr.openjdk.java.net/~thartmann/8058737/webrev.01/

JDK-8075805: Crash while trying to release CompiledICHolder https://bugs.openjdk.java.net/browse/JDK-8075805 http://cr.openjdk.java.net/~thartmann/8075805_8u/webrev.01/

JDK-8134493: Cleaning inline caches of unloaded nmethods should be done in sweeper https://bugs.openjdk.java.net/browse/JDK-8134493 http://cr.openjdk.java.net/~thartmann/8134493_8u/webrev.01/

All changes (now also including 8058737) : http://cr.openjdk.java.net/~thartmann/8075805_8134493_8u/webrev.01

Thanks, Tobias

Thanks, Vladimir

On 10/7/15 6:27 PM, Tobias Hartmann wrote: Hi,

please approve and review the following backport to 8u. 8075805: Crash while trying to release CompiledICHolder https://bugs.openjdk.java.net/browse/JDK-8075805 http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/c0ea5537dc8b http://cr.openjdk.java.net/~thartmann/8075805/webrev.01/ I would also like to backport this follow up change that fixes an issue with the fix for 8075805: 8134493: Cleaning inline caches of unloaded nmethods should be done in sweeper https://bugs.openjdk.java.net/browse/JDK-8134493 http://hg.openjdk.java.net/jdk9/hs-comp/hotspot/rev/9df4555d2d7d http://cr.openjdk.java.net/~thartmann/8134493/webrev.01/ Unfortunately, both changesets do not apply cleanly to 8u. I merged the fixes, here are the new webrevs: JDK-8075805: http://cr.openjdk.java.net/~thartmann/80758058u/webrev.00/ JDK-8134493 (incremental): http://cr.openjdk.java.net/~thartmann/81344938u/webrev.00/ Both changes: http://cr.openjdk.java.net/~thartmann/807580581344938u/webrev.00/ Both fixes were pushed some months ago and testing showed no problems. Thanks, Tobias

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