Re: firefox dumping core after NetBSD upgrade

[Sad Clouds <cryintothebluesky%gmail.com@localhost>]

On Fri, 11 Oct 2019 08:27:31 -0700 (PDT)
Paul Goyette <paul%whooppee.com@localhost> wrote:

> Core was generated by `firefox'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0  0x00007af20d009a7b in _atomic_cas_ptr (new=<optimized out>,
> #old=0x0,
>      ptr=0x7af20d3cb730)
>      at /build/netbsd-local/src_ro/lib/libpthread/arch/x86_64/pthread_md.h:77
> 77              __asm __volatile ("lock; cmpxchgq %2, %1"
> [Current thread is 1 (process 1)]
> (gdb)

void *atomic_cas_ptr(volatile void *ptr, void *old, void *new);

So assuming setting old to NULL is allowed, then I guess either ptr or
new are pointing to invalid memory locations.

Can you step through the first 5 frames and see if you can narrow down
which pointer is corrupt? You have debug symbols for NetBSD libraries.