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List: openjdk-hotspot-runtime-dev
Subject: Re: RFR (S): JDK-8026154: [TESTBUG] runtime/CDSCompressedKPtrs/XShareAuto.java failed due to excepti
From: Mikhailo Seledtsov <mikhailo.seledtsov () oracle ! com>
Date: 2014-03-10 18:54:00
Message-ID: 531E0A48.106 () oracle ! com
[Download RAW message or body]
Zhengyu, Christian,
Thank you for the review.
Misha
On 3/10/2014 11:41 AM, Christian Tornqvist wrote:
> Looks good! Thanks for fixing this.
>
> Thanks,
> Christian
>
> -----Original Message-----
> From: hotspot-runtime-dev-bounces@openjdk.java.net
> [mailto:hotspot-runtime-dev-bounces@openjdk.java.net] On Behalf Of Mikhailo
> Seledtsov
> Sent: Thursday, March 6, 2014 8:10 AM
> To: hotspot-runtime-dev
> Subject: RFR (S): JDK-8026154: [TESTBUG]
> runtime/CDSCompressedKPtrs/XShareAuto.java failed due to exception
>
> Please review this change that fixes several tests.
> The issues addressed by this change have similar root cause, hence I
> have consolidated them under the umbrella of JDK-8026154 and hope to submit
> them as one change set.
>
> In detail, these changes are introduced to cover situation where
> mapping of the shared (CDS) archive into memory fails. Such situation is a
> random occurance, and is most likely due
> to ASLR (Adress Space Layout Randomization). ASLR is a security
> feature managed by OS that randomizes the address where shared libraries are
> loaded; if the shared library is mapped
> into the space intended for the CDS archive, the mapping of the archive
> will fail. With this change, these tests take such situation into account.
>
> JBS: https://bugs.openjdk.java.net/browse/JDK-8026154
> Webrev: http://cr.openjdk.java.net/~mseledtsov/8026154/webrev.00/
> Testing:
> Exercises these tests on all standard platforms via JPRT -> PASS
> Local testing with number of iterations, especially on Windows
> where ASLR
> seems to be more aggressive
>
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<pre wrap=""><font face="Helvetica, Arial, sans-serif">Zhengyu, Christian,
</font></pre>
<font face="Helvetica, Arial, sans-serif"><br>
Thank you for the review. <br>
<br>
Misha</font><br>
<br>
<div class="moz-cite-prefix">On 3/10/2014 11:41 AM, Christian
Tornqvist wrote:<br>
</div>
<blockquote cite="mid:003001cf3c77$404210c0$c0c63240$@oracle.com"
type="cite">
<pre wrap="">Looks good! Thanks for fixing this.
Thanks,
Christian
-----Original Message-----
From: <a class="moz-txt-link-abbreviated" \
href="mailto:hotspot-runtime-dev-bounces@openjdk.java.net">hotspot-runtime-dev-bounces@openjdk.java.net</a> \
[<a class="moz-txt-link-freetext" \
href="mailto:hotspot-runtime-dev-bounces@openjdk.java.net">mailto:hotspot-runtime-dev-bounces@openjdk.java.net</a>] \
On Behalf Of Mikhailo Seledtsov
Sent: Thursday, March 6, 2014 8:10 AM
To: hotspot-runtime-dev
Subject: RFR (S): JDK-8026154: [TESTBUG]
runtime/CDSCompressedKPtrs/XShareAuto.java failed due to exception
Please review this change that fixes several tests.
The issues addressed by this change have similar root cause, hence I
have consolidated them under the umbrella of JDK-8026154 and hope to submit
them as one change set.
In detail, these changes are introduced to cover situation where
mapping of the shared (CDS) archive into memory fails. Such situation is a
random occurance, and is most likely due
to ASLR (Adress Space Layout Randomization). ASLR is a security
feature managed by OS that randomizes the address where shared libraries are
loaded; if the shared library is mapped
into the space intended for the CDS archive, the mapping of the archive
will fail. With this change, these tests take such situation into account.
JBS: <a class="moz-txt-link-freetext" \
href="https://bugs.openjdk.java.net/browse/JDK-8026154">https://bugs.openjdk.java.net/browse/JDK-8026154</a>
Webrev: <a class="moz-txt-link-freetext" \
href="http://cr.openjdk.java.net/~mseledtsov/8026154/webrev.00/">http://cr.openjdk.java.net/~mseledtsov/8026154/webrev.00/</a>
Testing:
Exercises these tests on all standard platforms via JPRT -> PASS
Local testing with number of iterations, especially on Windows
where ASLR
seems to be more aggressive
</pre>
</blockquote>
<br>
</body>
</html>
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