[aarch64-port-dev ] [9] RFR (XS) 8051712 regression Test7107135 crashes

[Chris Plummer]

Thanks Dean, David, and Andrew. I'll try to get this committed today.

Chris

On 5/26/15 10:56 AM, Dean Long wrote:
> Looks OK to me.
>
> dl
>
> On 5/24/2015 12:49 PM, Chris Plummer wrote:
>> Hello,
>>
>> Please review the fix for 8051712:
>>
>> http://cr.openjdk.java.net/~cjplummer/8051712/webrev.00
>> https://bugs.openjdk.java.net/browse/JDK-8051712
>>
>> This fix was already applied to aarch64-port/jdk8, but was missed 
>> when aarch64-port was integrated into jdk9. This commit is to the 
>> jdk9/dev mainline, not aarch64-port/jdk9.
>>
>> The issue is that ElfFile::specifies_noexecstack() assumes that if no 
>> PT_GNU_STACK record is found, then the platform (loader) defaults to 
>> execstack. However, for AARCH64 is defaults to noexecstack. More info 
>> can be found in the following discussion.
>>
>> http://mail.openjdk.java.net/pipermail/aarch64-port-dev/2014-February/000877.html 
>>
>>
>> Also see 7107135 for info on the execstack/noexecstack issue, and why 
>> ElfFile::specifies_noexecstack() exists in the first place:
>>
>> https://bugs.openjdk.java.net/browse/JDK-7107135
>>
>> Tested by using JPRT to run the test case on all supported platforms. 
>> Also ran all default "-testset hotspot" tests on all platforms.
>>
>> thanks,
>>
>> Chris
>