RFR: 8332699: ubsan: jfrEventSetting.inline.hpp:31:43: runtime error: index 163 out of bounds for type 'jfrNativeEventSetting [162]'

[Thomas Stuefe]

On Tue, 11 Jun 2024 14:46:10 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

> My maximum JfrEventId is 163 , see the generated hotspot/variant-server/gensrc/jfrfiles/jfrEventIds.hpp
> 
> ```
> 
> enum JfrEventId {
>   JfrMetadataEvent = 0,
>   JfrCheckpointEvent = 1,
>   JfrDurationEvent = 2,
>   JfrInstantEvent = 3,
>   JfrValueEvent = 4,
>   JfrTextEvent = 5,
>   JfrZThreadDebugEvent = 6,
>    .....
>   JfrJavaAgentEvent = 161,
>   JfrNativeAgentEvent = 162,
>   JfrDeprecatedInvocationEvent = 163,
> };
> ```
> 
> so NUMBER_OF_EVENTS + NUMBER_OF_RESERVED_EVENTS looks fine to me. 163 is the highest I could see while testing.

No, I am quite sure the `ev` substructure is wrong. The structure contains members that are not events, that's why its larger.

But it's an issue orthogonal to the one you are fixing. I opened https://bugs.openjdk.org/browse/JDK-8334031 to track it.

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PR Comment: https://git.openjdk.org/jdk/pull/19628#issuecomment-2161205376