Date: Mon, 15 Mar 1999 08:13:15 +0000 (GMT) From: Doug Rabson <dfr@nlsystems.com> To: Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru> Cc: Matthew Dillon <dillon@apollo.backplane.com>, current@freebsd.org Subject: Re: Simple DOS against 3.x locks box solid Message-ID: <Pine.BSF.4.05.9903150812150.47099-100000@herring.nlsystems.com> In-Reply-To: <199903142204.BAA03697@tejblum.dnttm.rssi.ru>
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On Mon, 15 Mar 1999, Dmitrij Tejblum wrote: > Matthew Dillon wrote: > > - error = acquire(lkp, extflags, > > - LK_HAVE_EXCL | LK_WANT_EXCL | LK_WANT_UPGRADE); > > + if (p->p_flag & P_DEADLKTREAT) { > > + error = acquire( > > This is broken: p may be NULL, it is checked several lines before. > My kernel just paniced for this reason. > > Well, sorry for late response, but: what was wrong with Tor Egge's > "workaround" from kern/8416? I'm almost relieved. I had a report of this on the alpha and I thought it might be alpha-specific. -- Doug Rabson Mail: dfr@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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