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failed to create io_uring ring fd Cannot allocate memory

See original GitHub issue

Hello,

I simply tried to run the example with the 1.18-1 version of the lib and got the following error:

java.lang.RuntimeException: failed to create io_uring ring fd Cannot allocate memory

Full stacktrace:

Exception in thread "main" java.lang.IllegalStateException: failed to create a child event loop
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:88)
	at io.netty.channel.MultithreadEventLoopGroup.<init>(MultithreadEventLoopGroup.java:68)
	at io.netty.incubator.channel.uring.IOUringEventLoopGroup.<init>(IOUringEventLoopGroup.java:104)
	at io.netty.incubator.channel.uring.IOUringEventLoopGroup.<init>(IOUringEventLoopGroup.java:97)
	at io.netty.incubator.channel.uring.IOUringEventLoopGroup.<init>(IOUringEventLoopGroup.java:90)
	at io.netty.incubator.channel.uring.IOUringEventLoopGroup.<init>(IOUringEventLoopGroup.java:79)
	at io.netty.incubator.channel.uring.IOUringEventLoopGroup.<init>(IOUringEventLoopGroup.java:62)
	at io.netty.incubator.channel.uring.IOUringEventLoopGroup.<init>(IOUringEventLoopGroup.java:48)
	at io.netty.incubator.channel.uring.IOUringEventLoopGroup.<init>(IOUringEventLoopGroup.java:41)
	at com.github.steveice10.packetlib.tcp.TcpServer.bindImpl(TcpServer.java:51)
	at com.github.steveice10.packetlib.AbstractServer.bind(AbstractServer.java:131)
	at com.github.steveice10.packetlib.AbstractServer.bind(AbstractServer.java:126)
	at com.github.steveice10.packetlib.AbstractServer.bind(AbstractServer.java:121)
	at fr.leopoldhub.mcprotocollibtest.Main.main(Main.java:134)
Caused by: java.lang.RuntimeException: failed to create io_uring ring fd Cannot allocate memory
	at io.netty.incubator.channel.uring.Native.ioUringSetup(Native Method)
	at io.netty.incubator.channel.uring.Native.createRingBuffer(Native.java:169)
	at io.netty.incubator.channel.uring.IOUringEventLoop.<init>(IOUringEventLoop.java:73)
	at io.netty.incubator.channel.uring.IOUringEventLoopGroup.newChild(IOUringEventLoopGroup.java:121)
	at io.netty.incubator.channel.uring.IOUringEventLoopGroup.newChild(IOUringEventLoopGroup.java:31)
	at io.netty.util.concurrent.MultithreadEventExecutorGroup.<init>(MultithreadEventExecutorGroup.java:84)
	... 13 more

Im on ubuntu 20.04.3 and using jdk11-correto on intellij.

Issue Analytics

State:
Created 2 years ago
Comments:5 (2 by maintainers)

Top GitHub Comments

1reaction

Camotoycommented, May 29, 2022

Geyser also removes io_uring - you can just exclude the package and PacketLib will handle the removal gracefully:

<exclusion>
          <groupId>io.netty.incubator</groupId>
          <artifactId>netty-incubator-transport-native-io_uring</artifactId>
</exclusion>

But a PR to update the dependency will also be accepted.

0reactions

artnaseefcommented, May 29, 2022

That works really well. Please remove it.

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