Re: [Valgrind-developers] What is this failure?

[Eyal L. <ey...@ey...>]

Robert Walsh wrote:
> 
> On Wed, 2004-01-14 at 00:23, Eyal Lebedinsky wrote:
> > Testing a busy server, with many threads, I ended up with
> > this a long report (attached) that starts with:
> >
> > valgrind: vg_malloc2.c:1008 (vgPlain_arena_malloc): Assertion `new_sb !=
> > ((void *)0)' failed.
> >
> > It seem to only happen when I use UDB database.
> >
> > This off current cvs.
> 
> Is it possible you're running out of memory or address space?  Remember,
> Valgrind takes up wads more memory than running the problem without
> Valgrind...

OK, I had a close look and I do not think a memory shortage
is involved.

At the point of failure a malloc(exactly 64MB) was done. It
never returned.

However, the same sort of malloc() followed by a free() was
done a number of times earlier. If vg holds on to freed
memory then there may be a problem. The machine is 1GB memory
and 2GB swap and abour 450MB of swap was used at the time
of failure.

I am running with:
	--tool=memcheck
	--leak-check=yes
	--show-reachable=no
	--num-callers=32
	--error-limit=no
	--run-libc-freeres=no
	--quiet
	--trace-children=no

--
Eyal Lebedinsky (ey...@ey...) <http://samba.org/eyal/>