RFR (XS) JDK-8010389 - After fix for 7107135 a failed dlopen() call results in a VM crash

[Ioi Lam]

Hi,

Could some give a quick review. This is a P2 bug and I'd like fix it 
quickly.

I have updated the patch to have a more simplified test case:

http://cr.openjdk.java.net/~iklam/8010389/dlopen_crash_002/


Thanks

- Ioi


On 03/21/2013 05:55 AM, Christian Tornqvist wrote:
>
> Hi Ioi,
>
> Adding '-Djava.library.path=.' to the @run tag seems to work.
>
> Thanks,
>
> Christian
>
> *From:*Ioi Lam [mailto:ioi.lam at oracle.com]
> *Sent:* den 21 mars 2013 05:22
> *To:* hotspot-runtime-dev at openjdk.java.net; Christian Törnqvist
> *Subject:* RFR (XS) JDK-8010389 - After fix for 7107135 a failed 
> dlopen() call results in a VM crash
>
> Please review:
>
> http://cr.openjdk.java.net/~iklam/8010389/dlopen_crash_001/ 
> <http://cr.openjdk.java.net/%7Eiklam/8010389/dlopen_crash_001/>
>
> Bug: After fix for 7107135 a failed dlopen() call results in a VM crash
>
> http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=8010389
> https://jbs.oracle.com/bugs/browse/JDK-8010389
>
>     (The bugs.sun.com page may be unavailable for a couple of days)
>
> Summary of fix:
>
>     Previously, if dlopen() fails inside the VM Thread, the Java 
> thread would
>     call dlerror() to try to find out what happened, but would get a 
> NULL return
>     instead. Attempts to use this NULL value causes the JVM to crash.
>
>     The fix is to read dlerror() in the VM Thread when necessary.
>
> To Christian:
>
>     I integrated your test into jtreg, but I needed to write a shell 
> test to set
>     the LD_LIBRARY_PATH. Is there a way to avoid the shell test?
>
> Tests executed:
>
>     * JPRT (linux only)
>     * UTE (vm.quick.testlist)
>     * JTREG
>
> Thanks,
> Ioi
>

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