Date: Mon, 15 Mar 1999 01:04:30 +0300 From: Dmitrij Tejblum <dima@tejblum.dnttm.rssi.ru> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: current@FreeBSD.ORG Subject: Re: Simple DOS against 3.x locks box solid Message-ID: <199903142204.BAA03697@tejblum.dnttm.rssi.ru> In-Reply-To: Your message of "Thu, 04 Mar 1999 23:06:28 PST." <199903050706.XAA38141@apollo.backplane.com>
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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?
Dima
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