Date: Thu, 19 Apr 2007 16:22:52 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Anton Yuzhaninov <citrin@citrin.ru> Cc: freebsd-current@freebsd.org Subject: Re: clamd memory corruption (may be jemalloc related) Message-ID: <20070419202252.GA83784@xor.obsecurity.org> In-Reply-To: <313993633.20070419232238@citrin.ru> References: <313993633.20070419232238@citrin.ru>
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[-- Attachment #1 --] On Thu, Apr 19, 2007 at 11:22:38PM +0400, Anton Yuzhaninov wrote: > Hello. > > I try to test clamav 0.90.2 on current and got strange errors: > > LibClamAV Warning: Multipart/alternative MIME message contains no boundary header > LibClamAV Warning: Multipart/ZZZZZZZZZZZZ?????? MIME message contains no boundary header > LibClamAV Warning: Multipart/related MIME message contains no boundary header > > And sometimes clamd segfaults. > > $ uname -a > FreeBSD clam-test2 7.0-CURRENT FreeBSD 7.0-CURRENT #1: Thu Apr 19 13:37:17 MSD 2007 citrin@clam-test2:/usr/obj/usr/src/sys/TEST amd64 > $ fgrep Multiprocessor /var/run/dmesg.boot > FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs > $ ls -l /etc/malloc.conf > lrwxr-xr-x 1 root wheel 2 19 ??? 15:12 /etc/malloc.conf -> AJ > > This Warnings issued randomly and it looks like race condition. > > This problem occurred only when running two or more clamdscan > processes in parallel. With one process no warnings on same test > messages. > > Also on same hardware, same test messages, same clamav version, but on > 6.2-STABLE (where old malloc) no errors even when running 30 clamdscan > processes in parallel. > > Any suggestions to debug this problem? You'll have to look at the source and figure out where it's using uninitialized or freed memory. Kris [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFGJ8+cWry0BWjoQKURAoTeAJoDzg2L9e9418C/f46/kj55xt+HTQCghsS4 W9sfUQ8eNbjvRYkmLrN4Emw= =hseH -----END PGP SIGNATURE-----help
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