Deadlock when loading JNI code after updating to openjdk 11.0.11

[Andrew Haley]

On 4/29/21 8:19 AM, Norman Maurer wrote:
> In netty we have a bunch of JNI code that is loaded during initialisation. Yesterday a user reported that after upgrading from openjdk 11.0.10 to 11.0.11 he often see a deadlock while loading the JNI code. 
> After looking at the stack trace it seems like all of this is really happening in “java land” and so looks more like a openjdk bug / regression than a netty bug. 
> Any idea what could have caused this ?

It's the sort of thing that could have been caused by something quite
innocuous.

http://hg.openjdk.java.net/jdk-updates/jdk11u-dev/rev/c82c3d65c256
looks like it might be relevant. But if the OP can reproduce the bug,
let's have it.

-- 
Andrew Haley  (he/him)
Java Platform Lead Engineer
Red Hat UK Ltd. <https://www.redhat.com>
https://keybase.io/andrewhaley
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