[riscv-port] RFR: 8279664: riscv: JFR crashes at 0x0

[Yadong Wang]

On Thu, 20 Jan 2022 15:02:20 GMT, Xiaolin Zheng <xlinzheng at openjdk.org> wrote:

> Hi team,
> 
> This is a preview fix for the JFR-related crash - maybe the comment in this patch should be polished.
> TIL that complex problems often result from seemingly negligible changes :-)
> I need to cautiously test this change, though it seems no harm, to guarantee that it is safe and to ensure the problem is gone so please stay a little tuned.
> 
> Thanks,
> Xiaolin

@zhengxiaolinX Nice catch. In fact, we fixed a similar bug before, and unfortunately missed here.

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Marked as reviewed by yadongwang (Committer).

PR: https://git.openjdk.java.net/riscv-port/pull/49