Date: Mon, 15 Nov 2004 21:29:50 +0100 From: Wilko Bulte <wb@freebie.xs4all.nl> To: Ruslan Ermilov <ru@freebsd.org> Cc: alpha@freebsd.org Subject: Re: Removing VGA card panics the box on boot Message-ID: <20041115202950.GB59855@freebie.xs4all.nl> In-Reply-To: <20041115185514.GA65300@ip.net.ua> References: <20041115081659.GA30262@ip.net.ua> <200411151112.49535.jhb@FreeBSD.org> <20041115185514.GA65300@ip.net.ua>
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On Mon, Nov 15, 2004 at 08:55:14PM +0200, Ruslan Ermilov wrote.. > On Mon, Nov 15, 2004 at 11:12:49AM -0500, John Baldwin wrote: > > On Monday 15 November 2004 03:16 am, Ruslan Ermilov wrote: > > > Hi there, > > > > > > I needed the unused PCI VGA card for testing another machine, > > > so I pulled it out from my AlphaPC 164SX, and that gave me an > > > > > > instant panic on boot: > > > : Timecounter "i8254" frequency 1193182 Hz quality 0 > > > : Timecounter "alpha" frequency 533183689 Hz quality 800 > > > : Timecounters tick every 0.976 msec > > > : panic: mtx_lock() of spin mutex (null) @ /usr/src/sys/netinet/igmp.= c:431 > > > : cpuid =3D 0 > > > : KDB: enter: panic > > > : [thread 100004] > > > : Stopped at kdb_enter+0x48: or zero,zero,zero <zero=3D0x0> > > > : db> > > > > > > Putting it back in results in normal behavior (no panic). > > > Any hints? > >=20 > > Sounds like something is messing with free'd memory through a stale poi= nter=20 > > and happens to be trashing that spin mutex as a result. Not sure on ho= w to=20 > > track it down however. > >=20 > The funny thing is that it happens in exactly this same place, > and only when I pull the VGA card out. ;) 5.3-<mumble> didn't do that to me for my DS10 when I took the VGA card out. SRM setting CONSOLE=3Dserial right? (should be but heh...) --=20 Wilko Bulte wilko@FreeBSD.org
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