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[Bug libc/10018] malloc thread-safety issues


------- Additional Comments From Florian dot Douetteau at exalead dot com  2009-04-04 14:39 -------

The corruption has also been reproduced on this system : 

Distro          Cpu 	Cores 	Libc 	GCC 	Kernel 	Vulnerable
Gentoo          x86-64  8       2.8   4.3.2 	2.6.27 	Yes

When compiling glibc 2.9 out of the box on this system, 
from
ftp://sources.redhat.com/pub/glibc/releases/glibc-libidn-2.9.tar.gz
and LD_PRELOADing it the corruption disappears.

When reverse applying this patch, on 2.9 sources 
http://sourceware.org/cgi-bin/cvsweb.cgi/libc/malloc/malloc.c.diff?r1=1.189&r2=1.190&cvsroot=glibc


(comment: (public_rEALLOc): When new arena is used, copy really all bytes) 

and recompiling, the corruption reappers.



-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=10018

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