Date: Thu, 24 May 2007 20:13:21 +0200 From: Attilio Rao <attilio@FreeBSD.org> To: Jeff Roberson <jroberson@chesapeake.net> Cc: Current@freebsd.org Subject: Re: Panic on -CURRENT after LDT changes Message-ID: <4655D5C1.2010905@FreeBSD.org> In-Reply-To: <20070523165051.G9443@10.0.0.1> References: <1179962663.75721.6.camel@shumai.marcuscom.com> <20070523165051.G9443@10.0.0.1>
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Jeff Roberson wrote: > Thanks, Attilio and I will look at this right away. > > Jeff > > On Wed, 23 May 2007, Joe Marcus Clarke wrote: > >> On a -CURRENT build today with Jeff's LDT locking changes, I get an >> instant, reproducible panic by doing: >> >> # cd /usr/src >> # make -DNO_CLEAN buildworld >> >> Backing out the LDT changes to /sys/i386/i386/*machdep* corrects the >> problem. Here is a dmesg and backtrace. In frame 6, it appears mdp is >> NULL (i.e. td->td_proc->p_md = 0x0). Did you enable WITNESS/INVARIANTS/INVARIANT_SUPPORT? Thanks, Attilio
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