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

[Philippe Lelong]

Hi,


I am searching for this issue for months now, and cannot find any solution.

To make a long story short, we are using GDAL to decode OGR/S57 charts for years now. We are facing numerous crashes under Android 11 and up if and only if this Android 11 implementation is using SCUDO as a memory allocator (if jemalloc is used no problems). We face this problem with an old GDAL2.1.3 version, so we updated to GDAL 3.4.1 but the issue is the same.


What I can see is that the memory grows exponentially until no more memory is available and crash, even on systems with huge memory available while an Android device without SCUDO and very limited memory (let's say 4Gb) in the same exact conditions, with the same apk, runs perfectly. The logcat command show this:



03-28 12:40:34.255  4959  5005 W libc    : malloc(264196) failed: returning null pointer
03-28 12:40:34.255  4959  5005 W libc    : malloc(264196) failed: returning null pointer
03-28 12:40:34.256  4959  5005 W libc    : malloc(264196) failed: returning null pointer
03-28 12:40:34.256  4959  5005 W libc    : malloc(264196) failed: returning null pointer
03-28 12:40:34.612   630   630 D io_stats: !@ Write_top(KB): kworker/u16:1(32583) 8
03-28 12:40:34.820  4959  5041 I scudo   : Scudo ERROR: out of memory trying to allocate 64 bytes
03-28 12:40:34.820  4959  5042 I scudo   : Scudo ERROR: out of memory trying to allocate 64 bytes
03-28 12:40:34.820  4959  5033 I scudo   : Scudo ERROR: out of memory trying to allocate 64 bytes
03-28 12:40:34.820  4959  5031 I scudo   : Scudo ERROR: out of memory trying to allocate 64 bytes
03-28 12:40:34.820  4959  5038 I scudo   : Scudo ERROR: out of memory trying to allocate 64 bytes
03-28 12:40:34.820  4959  5040 I scudo   : Scudo ERROR: out of memory trying to allocate 64 bytes

and then crash

Any help on how to debug and eventually fix this would be highly appreciated.

Best regards,
Philippe from qtVlm development team.

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