[gdal-dev] Memory allocation issues on Android 11+ and scudo

[Andrew C Aitchison]

On Sat, 2 Apr 2022, Philippe Lelong wrote:

> Hi again,
>
> Still fighting with that one.>
>
> I have tried to not run gdal multithreaded, same issue. I have also
> tried to replace malloc(nSize) with calloc(1, nSize) in VSIMalloc to
> make sure the memory is initialized, same issue. And many other
> things... still crashing.
>
> I don't know how to interpret the logs I joined in the previous mail
> with VSIMalloc etc debugging, do you see anything special in them?
>
> Any other idea I can try to isolate the problem?

Is valgrind an option, or would that replace the problem memory library ?

I believe that valgrind is not the only memory debugger.

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The "swap is low" message
> 03-28 21:02:14.511   583   583 I lmkd    : Reclaim 'android.process.acore' (27861), uid 10071, oom_score_adj 850, state 99 to free 33916kB rss, 56816kB swap; reason: low watermark is breached and swap is low (1848484kB < 838860kB)
is intriguing - to me it suggests a 32bit sign issue
      1 848 484 kB <
        838 860 kB
Could there be a 32/64bit library mismatch ?

-- 
Andrew C. Aitchison					Kendal, UK
 			andrew at aitchison.me.uk