Review request: 8004697: SIGSEGV on Solaris sparc with -XX:+UseNUMA

[Stefan Karlsson]

Thanks, Jon.

StefanK

On 2013-03-11 19:10, Jon Masamitsu wrote:
> Looks good.
>
> Jon
>
> On 03/11/13 03:04, Stefan Karlsson wrote:
>> http://cr.openjdk.java.net/~stefank/8004697/webrev.00/
>>
>> The JVM crashes because it accidentally frees memory in the survivor 
>> regions, at one point where it is supposed to only free freeing 
>> memory in the eden.
>>
>> The code in os::scan_pages(start, end, ...) in solaris_os.cpp looks 
>> at pages starting beyond 'end'. This causes 
>> MutableNUMASpace::LGRPSpace::scan_pages to free memory outside eden, 
>> when the last page starts in, but ends outside of eden.
>>
>> Testing: The JVM used to crash within in a couple of minutes. With 
>> the patch, the test has been running over the weekend without any 
>> crashes.
>>
>> thanks,
>> StefanK