Date: Sat, 13 Sep 1997 15:59:39 +0200 (CEST) From: Blaz Zupan <blaz@amis.net> To: FreeBSD-gnats-submit@FreeBSD.ORG Subject: bin/4524: Possible buggy malloc in -stable Message-ID: <199709131359.PAA28431@server.amis.net> Resent-Message-ID: <199709131400.HAA05088@hub.freebsd.org>
next in thread | raw e-mail | index | archive | help
>Number: 4524 >Category: bin >Synopsis: procmail can swap machine to death with malloc.c from -stable >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Sat Sep 13 07:00:01 PDT 1997 >Last-Modified: >Originator: Blaz Zupan >Organization: Medinet >Release: FreeBSD 2.2-STABLE i386 >Environment: procmail 3.11p4 as installed from the ports collection, latest 2.2-STABLE >Description: When trying to deliver a big mail with procmail as the local delivery agent, procmail can eat all your swap and the machine simply swaps to death (I was able to reproduce this on my machine by sending the netscape binary to myself :). Martijn Koster <mak@webcrawler.com> has mentioned on the -stable mailing list that replacing the malloc.c in libc with the one from -current helps and I tried it and now the machine still swaps like hell but it doesn't halt like it did before, instead procmail is killed with a simple "Out of memory". I'm not sure whether the underlying problem is procmail or the new malloc introduced with 2.2, but I know that procmail was working just fine with 2.1.x and as soon as I upgraded to 2.2.x it started acting up, so I suspect malloc is at fault. >How-To-Repeat: Install procmail as local delivery agent for sendmail and send some big mail to yourself (the netscape binary MIME encoded will do just fine). >Fix: One fix that IMHO should be done is upgrading malloc.c to the one from -current (a close inspection of the changes reveals a typo in the -stable malloc.c which should be fixed anyway). Possibly also procmail is buggy as replacing procmail with mail.local works just fine. >Audit-Trail: >Unformatted:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199709131359.PAA28431>