Date: Fri, 27 Dec 2013 19:44:23 +0000 (UTC) From: David Wuertele <dave+gmane@...rtele.com> To: musl@...ts.openwall.com Subject: Re: NULL deref SEGV in malloc.c:unbin() Rich Felker <dalias <at> aerifal.cx> writes: > On Fri, Dec 27, 2013 at 06:35:00PM +0000, David Wuertele wrote: > > I wonder if anyone has hit this before? In unbin(), c->next->prev is set, > > but c->next is NULL. It happens repeatedly, and here's what gdb says: > > It's almost surely a case of memory corruption by the calling program, > most likely using memory after it's already been freed. Hmm, my program calls malloc() once and never calls free(). Oh, I guess it does call free indirectly when it uses closedir() and fclose(). I will try to use gdb/watch to catch someone red-handed. Dave
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