On Fri, Dec 28, 2007 at 09:24:24PM +0900, YAMAMOTO Takashi wrote:

> > Module Name:	src
> > Committed By:	ad
> > Date:		Sat Dec  1 22:44:44 UTC 2007
> > 
> > Modified Files:
> > 	src/lib/libc/stdlib: jemalloc.c
> > 
> > Log Message:
> > Back out the per-cpu arena changes. With this, ld.so magically stops
> > loading libc/libpthread twice -- which does not make sense, because it
> > has its own private malloc().
> > 
> > 
> > To generate a diff of this commit:
> > cvs rdiff -r1.14 -r1.15 src/lib/libc/stdlib/jemalloc.c
> > 
> > Please note that diffs are not public domain; they are subject to the
> > copyright notices on the relevant files.
> 
> is there a recipe to reproduce the problem?

Put the changes back into libc and some threaded applications will fail on
i386, presumably because the memory layout changes somehow. Firefox 2.0.0.6
fails for me. With the changes backed out, I still see a native java binary
mmap'ing libc and libpthread twice, but it still seems happy enough to work.
Also, there are reports that this always happens on alpha.

Andrew