Crash on macosx-aarch64 when merging Leyden premain with mainline

[Dean Long]

8367131 is a test-only change.  What is the code doing at the crash 
site?  It looks like the crash is because of an unaligned memory 
address, but the reported address 0x000000012a8c7108 looks aligned 
unless the code is doing a 16-byte memory access.  It could possibly be 
related to my recent change 8361376.

dl

On 9/18/25 1:37 PM, ioi.lam at oracle.com wrote:
> I got a crash when building the JDK after merging the latest premain 
> with the following changeset in the mainline
>
>
> commit fdc11a1569248c9b671b66d547b4616aeb953ecf
> Author: Sergey Bylokhov <serb at openjdk.org>
> Date:   Wed Sep 10 11:41:42 2025
>
>     8367131: Test com/sun/jdi/ThreadMemoryLeakTest.java fails on 32 bits
>
> I had to do "make jdk-image LOG=debug" to find out the exact command 
> that crashed and ran it by hand to get hs_err, which shows:
>
>
> V  [libjvm.dylib+0x2c49c8] 
> BarrierSetNMethod::nmethod_stub_entry_barrier(unsigned char**)+0x140
> v  ~StubRoutines::Stub Generator method_entry_barrier_stub 
> 0x0000000131de4938
> siginfo: si_signo: 10 (SIGBUS), si_code: 1 (BUS_ADRALN), si_addr: 
> 0x000000012a8c7108
>
>
> Could anyone familiar with the code help trouble shooting this? (You 
> don't want to merge beyond the above changeset as you'd run into some 
> CDS conflicts, which I plan to address above this crash is fixed).
>
> This happens on my laptop (M3 and Sequoia 15.6.1) and our CI as well. 
> For some reason, the crash didn't happen with GitHub action, so it may 
> be specific to macos or CPU versions.
>
> Thanks
>
> - Ioi
>
>
>