[Mesa-dev] [Bug 111288] Memory leak in minecraft (supposedly related to rendering)

Thu Aug 8 14:07:09 UTC 2019

https://bugs.freedesktop.org/show_bug.cgi?id=111288

--- Comment #15 from Denis <denys.kostin at globallogic.com> ---
>If you replace the trace with "valgrind --leak-check=full", valgrind's output should contain information about where how much memory is (possibly) leaked.

That's how I launched minecraft for tracing (it is HUGE command, I took it from
the "real" process launched. Without valgrind it launches second instance with
a game, without launching "minecraft launcher"). As I wrote, waited 20 hours
without result.

valgrind --leak-check=full \
         --show-leak-kinds=all \
         --track-origins=yes \
         --verbose \
         --log-file=valgrind-out.txt \
         --suppressions=/home/den/Downloads/invalid_access.supp \
         /usr/lib/jvm/java-8-openjdk/jre/bin/java -Xss1M
-Djava.library.path=/tmp/3024-a622-fa75-1bb1
-Dminecraft.launcher.brand=minecraft-launcher
-Dminecraft.launcher.version=2.1.5965 -cp
/home/den/.minecraft/libraries/com/mojang/patchy/1.1/patchy-1.1.jar:/home/den/.minecraft/libraries/oshi-project/oshi-core/1.1/oshi-core-1.1.jar:/home/den/.minecraft/libraries/net/java/dev/jna/jna/4.4.0/jna-4.4.0.jar:/home/den/.minecraft/libraries/net/java/dev/jna/platform/3.4.0/platform-3.4.0.jar:/home/den/.minecraft/libraries/com/ibm/icu/icu4j-core-mojang/51.2/icu4j-core-mojang-51.2.jar:/home/den/.minecraft/libraries/com/mojang/javabridge/1.0.22/javabridge-1.0.22.jar:/home/den/.minecraft/libraries/net/sf/jopt-simple/jopt-simple/5.0.3/jopt-simple-5.0.3.jar:/home/den/.minecraft/libraries/io/netty/netty-all/4.1.25.Final/netty-all-4.1.25.Final.jar:/home/den/.minecraft/libraries/com/google/guava/guava/21.0/guava-21.0.jar:/home/den/.minecraft/libraries/org/apache/commons/commons-lang3/3.5/commons-lang3-3.5.jar:/home/den/.minecraft/libraries/commons-io/commons-io/2.5/commons-io-2.5.jar:/home/den/.minecraft/libraries/commons-codec/commons-codec/1.10/commons-codec-1.10.jar:/home/den/.minecraft/libraries/net/java/jinput/jinput/2.0.5/jinput-2.0.5.jar:/home/den/.minecraft/libraries/net/java/jutils/jutils/1.0.0/jutils-1.0.0.jar:/home/den/.minecraft/libraries/com/mojang/brigadier/1.0.17/brigadier-1.0.17.jar:/home/den/.minecraft/libraries/com/mojang/datafixerupper/2.0.24/datafixerupper-2.0.24.jar:/home/den/.minecraft/libraries/com/google/code/gson/gson/2.8.0/gson-2.8.0.jar:/home/den/.minecraft/libraries/com/mojang/authlib/1.5.25/authlib-1.5.25.jar:/home/den/.minecraft/libraries/org/apache/commons/commons-compress/1.8.1/commons-compress-1.8.1.jar:/home/den/.minecraft/libraries/org/apache/httpcomponents/httpclient/4.3.3/httpclient-4.3.3.jar:/home/den/.minecraft/libraries/commons-logging/commons-logging/1.1.3/commons-logging-1.1.3.jar:/home/den/.minecraft/libraries/org/apache/httpcomponents/httpcore/4.3.2/httpcore-4.3.2.jar:/home/den/.minecraft/libraries/it/unimi/dsi/fastutil/8.2.1/fastutil-8.2.1.jar:/home/den/.minecraft/libraries/org/apache/logging/log4j/log4j-api/2.8.1/log4j-api-2.8.1.jar:/home/den/.minecraft/libraries/org/apache/logging/log4j/log4j-core/2.8.1/log4j-core-2.8.1.jar:/home/den/.minecraft/libraries/org/lwjgl/lwjgl/3.2.2/lwjgl-3.2.2.jar:/home/den/.minecraft/libraries/org/lwjgl/lwjgl-jemalloc/3.2.2/lwjgl-jemalloc-3.2.2.jar:/home/den/.minecraft/libraries/org/lwjgl/lwjgl-openal/3.2.2/lwjgl-openal-3.2.2.jar:/home/den/.minecraft/libraries/org/lwjgl/lwjgl-opengl/3.2.2/lwjgl-opengl-3.2.2.jar:/home/den/.minecraft/libraries/org/lwjgl/lwjgl-glfw/3.2.2/lwjgl-glfw-3.2.2.jar:/home/den/.minecraft/libraries/org/lwjgl/lwjgl-stb/3.2.2/lwjgl-stb-3.2.2.jar:/home/den/.minecraft/libraries/com/mojang/text2speech/1.11.3/text2speech-1.11.3.jar:/home/den/.minecraft/versions/1.14.4/1.14.4.jar
-Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20
-XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
-Dlog4j.configurationFile=/home/den/.minecraft/assets/log_configs/client-1.12.xml
net.minecraft.client.main.Main --username Player --version 1.14.4 --gameDir
/home/den/.minecraft --assetsDir /home/den/.minecraft/assets --assetIndex 1.14
--uuid 265e330a88c60b9ad41d57788ec45778 --accessToken
fbaaa18c2da14c20b1211a28e69137c3 --userType legacy --versionType release --demo

>Valgrind doesn't do well with java. It detects over 10000194 errors in jvm *before minecraft even starts*, and makes it very slow, as Denis mentioned.

Confirming, I used to suppress some errors, because without this step it simply
said "valgrind stopped. Fix your buggy program" :)

>Can you please check trace I provided (replay it and monitor amount of `renderD128` records) (if leaks are 'replayed', then the problem is somewhere in jvm (i've noticed appearance of sigsegv signals that don't terminate program when I traced with ltrace), if not, then probably it's driver issue or something, and at least it'll be easier (than delving in decompiled minecraft) to locate troublesome chunk)

Interesting. Yesterday, when I replayed trace, I saw about 15 records for
'/dev/dri/renderD128' at .../maps

Today - no any records related to this device. Replayed trace about 5 times.

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