[Bug: 21.5-b24] Crash running finalizer for Lisp Symbol under NEWGC/NEWALLOC

[Daniel Pittman]

Marcus Crestani <crestani at informatik.uni-tuebingen.de> writes:

> Daniel,
> thanks for your detailed report.
>
>>>>>>"DP" == Daniel Pittman <daniel at rimspace.net> writes:
> DP> Running under the new allocator is better, but I have hit a bug:
> DP> an attempt to finalize a page that seems to contain an improperly
> DP> allocated object.
>
> DP> The finalize method of the object points off into random memory,
> DP> resulting in a SIG11 trying to finalize that page.
>
> There is some strange memory corruption happening.  I've not been able
> to identify the cause of it yet, I haven't found a way to reproduce
> the bug deterministically.

Sounds like fun.  I presume that Valgrind isn't of much use here?

In any case, I think I made it clear, but fixing the free-under-GC I
reported doesn't resolve this.

         Daniel