Windows random EXCEPTION_ACCESS_VIOLATION crash

[Ty Young]

On 7/21/20 12:15 PM, Maurizio Cimadamore wrote:
> Looks like a crash in the library itself, so, very likely cause by 
> some issues in the port - perhaps some layout mismatch? Could also be 
> that you have some pre-existing memory corruption issue (e.g. not 
> caused by the port), and that Windows is more likely to trigger a 
> segfault.


Can't think of any besides signedness. Not sure how memory corruption is 
coming into play either, the application starts the same way on the main 
thread all the time.


Are there any tools that can be used to debug this? If not, I can try 
making an FMA memory viewer in JavaFX or something so I can easily 
visualize what's going on I suppose.


>
> Maurizio
>
>
> On 21/07/2020 17:24, Ty Young wrote:
>> I decided to port my application to Windows from Linux since NVML, 
>> Java, and JavaFX are all cross-platform. It was pretty easy except 
>> for a bug in the JDK build process that someone on build-dev helped 
>> me get through and Maven being more strict on Windows than Linux. 
>> There is, however, an issue in that the application sometimes crashes 
>> briefly after showing the GUI with:
>>
>>
>> #
>> # A fatal error has been detected by the Java Runtime Environment:
>> #
>> #  EXCEPTION_ACCESS_VIOLATION (0xc0000005) at pc=0x00007ffd8150efe2, 
>> pid=15876, tid=10228
>> #
>> # JRE version: OpenJDK Runtime Environment (16.0) (build 
>> 16-internal+0-adhoc.young.panama-foreign-foreign-abi)
>> # Java VM: OpenJDK 64-Bit Server VM 
>> (16-internal+0-adhoc.young.panama-foreign-foreign-abi, mixed mode, 
>> sharing, tiered, compressed oops, g1 gc, windows-amd64)
>> # Problematic frame:
>> # C  [nvml.dll+0x8efe2]
>>
>>
>> To be crystal clear, there was basically no code changes between 
>> Linux and Windows(I manually specify library pathing for both now, 
>> that's it). I've never seen this crash under Linux and if it doesn't 
>> happen once the GUI first appears, the application will run just 
>> fine[2] for hours. I tested this to make sure it wouldn't eventually 
>> crash. I've attached two of the crash logs as well. Nothing stands 
>> out to me personally. The Linux build I'm using is older than the 
>> Windows build. That's it.
>>
>>
>> Any ideas?
>>
>>
>> [1] https://imgur.com/a/n3KDkot
>>
>> [2] https://imgur.com/a/dykLw6G
>>
>>
>>