Date: Mon, 21 Sep 1998 21:31:37 -0400 (EDT) From: Brian Feldman <green@zone.syracuse.net> To: Julian Elischer <julian@whistle.com> Cc: Ben Smithurst <ben@scientia.demon.co.uk>, Mike Smith <mike@smith.net.au>, FreeBSD Current <freebsd-current@FreeBSD.ORG> Subject: Re: system hangs with soft updates Message-ID: <Pine.BSF.4.04.9809212130260.18872-100000@zone.syracuse.net> In-Reply-To: <Pine.BSF.3.95.980921143212.11176C-100000@current1.whistle.com>
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Wow, I sure hope that noone read your message and ecided to follow it word-by-word. Ctrl-alt-del is the reboot key sequence (albeit disableable), ctrl-alt-ESC is the DDB break-in sequence. Cheers, Brian On Mon, 21 Sep 1998, Julian Elischer wrote: > > > On Thu, 17 Sep 1998, Ben Smithurst wrote: > > > Mike Smith wrote: > > > > > > _wdstart(ctrlr=1) at _wdstart+0x4af [../../i386/isa/wd.c:332] > > > > > > This is where you were when the interrupt occurred. Unfortunately the > > > line number above is wrong; wdstart() begins around line 900. > > > > I've repeated it, and it definitely says 332, so don't blame me for that > > one <g> > > > > > Did you see any "dummy wdunwedge" messages before you dropped into DDB, > > > or any other messages at all? > > > > No, I'm pretty sure I didn't see anything like that. > > > > > If you can reproduce the situation again, it would be useful if you > > > could drop into DDB, copy the trace output, then use 'c' to continue > > > and repeat the process a couple of times. This would clarify whether > > > you're stuck in the IDE driver, or whether you just happened to catch > > > it there on a chance. > > > > When I press c, nothing happens. I have to ctrl-alt-esc to get back into > > the debugger. > > if you re-enter the debugger many times doe sthe stack trace ever change > at all? > <CTL><ALT><DEL> > [get stack] > Cont > <CTL><ALT><DEL> > [get stack] > Cont > <CTL><ALT><DEL> > [get stack] > Cont > <CTL><ALT><DEL> > [get stack] > Cont > > > > > A few other lines which may be relevant, everything else was pretty much > > the same as last time: > > > > _worklist_insert(head=f1a049a0,item=f0fa0280) at _worklist_insert+0x10 [../../ufs/ffs/ffs_softdep.c:402] > > _softdep_disk_write_complete(bp=f1a049a0) at _softdep_disk_write_complete+0x29d [../../ufs/ffs/ffs_softdep.c:3012] > > _biodone(bp=f1a049a0) at _biodone+0xab [../../kern/vfs_bio.c:1915] > > Very interesting... > I have to upgrade my test systems as they've been > 'suspended' during all the ELF/CAM transition. > > > > > The disk light did actually go off after a while, but it came on again > > as soon as I typed (c)ontinue, so it's stuck somewhere. > Well you can single-step.. > try 's' instead of 'c' > > julian > > > > > -- > > Ben Smithurst : ben@scientia.demon.co.uk : http://www.scientia.demon.co.uk/ > > > > PGP: 0x99392F7D - 3D 89 87 42 CE CA 93 4C 68 32 0E D5 36 05 3D 16 > > http://www.scientia.demon.co.uk/ben/pgp-key.html (or use keyservers) > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > with "unsubscribe freebsd-current" in the body of the message > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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