RFR (S) 8023956 [2nd post]: Provide a work-around to broken Linux 32 bit "Exec Shield" using CS for NX emulation (crashing with SI_KERNEL)

[Zhengyu Gu]

Hi David,

/src/os_cpu/linux_x86/vm/os_linux_x86.cpp #906

The mmap() call needs to be reported to native memory tracking.

Thanks,

-Zhengyu

On 9/23/2013 8:27 AM, Coleen Phillmore wrote:
>
> David,
> This looks really good.   Thank you for adding this workaround. Should 
> you remove the SI_KERNEL message that we have in the signal handler too?
> Thanks,
> Coleen
>
> On 9/23/2013 5:02 AM, David Simms wrote:
>>
>>
>>
>> -------- Original Message --------
>> Subject: 	RFR (S) 8023956: Provide a work-around to broken Linux 32 
>> bit "Exec Shield" using CS for NX emulation (crashing with SI_KERNEL)
>> Date: 	Mon, 02 Sep 2013 13:18:52 +0200
>> From: 	David Simms <david.simms at oracle.com>
>> To: 	hotspot-runtime-dev at openjdk.java.net
>>
>>
>>
>> G'day all,
>>
>> Please review a small enhancement for working around a rare but 
>> annoying Linux bug (ia32 only).
>>
>> Bug link: https://bugs.openjdk.java.net/browse/JDK-8023956 ( 
>> http://bugs.sun.com/view_bug.do?bug_id=8023956)
>>
>> Webrev: http://cr.openjdk.java.net/~dsimms/8023956/ 
>> <http://cr.openjdk.java.net/%7Edsimms/8023956/>
>>
>> Cheers
>> /David Simms
>>
>>
>

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