Re: [PATCH v8 33/38] kselftest/arm64: Add a GCS test program built with the system libc

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On Mon, Feb 19, 2024 at 11:15:57PM -0300, Thiago Jung Bauermann wrote:

> The only issue as can be seen above is that the can_call_function test
> is failing. The child is getting a GCS Segmentation fault when returning
> from fork().

> I tried debugging it with GDB, but I don't see what's wrong since the
> address in LR matches the first entry in GCSPR. Here is the
> debug session:

I'm simply not seeing this in my testing.  There's *something* going on
somewhere, I had another report of a similarish thing elsewhere, but not
in any way that I've ever been able to reproduce.  It smells like there
might be something missing with the page tables...

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