Date: Tue, 02 Mar 2010 09:21:27 -0800 From: Mark Atkinson <atkin901@gmail.com> To: freebsd-current@freebsd.org Subject: Re: malloc problems in -current malloc_usable_size() Message-ID: <hmjheo$ckn$1@dough.gmane.org> In-Reply-To: <201003021203.00582.jhb@freebsd.org> References: <hmjev2$qhm$1@dough.gmane.org> <201003021203.00582.jhb@freebsd.org>
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On 03/02/10 09:03, John Baldwin wrote: > On Tuesday 02 March 2010 11:38:57 am Mark Atkinson wrote: >> Hi, >> >> I updated my kernel/world yesterday and thunderbird 3.0.2 started core >> dumping after I completed the upgrade. It continued to do so on >> previously good operations after a full re-compile. >> >> I noticed that some jemalloc changes went in and was wondering if anyone >> else was noticing SEGV problems in other apps with malloc_usable_size() >> or ARENA problems in threaded apps? > > This may be a bug in gssapi rather than malloc(). Someone else was reporting > segfaults from gss_release_buffer() because it was free()ing a bad pointer > when using gssapi_krb5. > Thanks for that tip, I didn't associated that with the LDAP thread until now. LD_PRELOAD ing a dummy gss_release_buffer() stops the segfaulting. Curious it only showed up after I updated. I had an Jan 11th kernel/world earlier.
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