Date: Sun, 13 Jun 1999 10:06:20 -0700 (PDT) From: Matthew Dillon <dillon@apollo.backplane.com> To: David Scheidt <dscheidt@enteract.com> Cc: Bernd Walter <ticso@cicely.de>, freebsd-hackers@FreeBSD.ORG Subject: Re: softupdates problem? Message-ID: <199906131706.KAA04284@apollo.backplane.com> References: <Pine.NEB.3.96.990613035613.52965B-100000@shell-2.enteract.com>
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:On Sun, 13 Jun 1999, Bernd Walter wrote: : :> On Sat, Jun 12, 1999 at 12:13:43AM -0500, David Scheidt wrote: :> > I had a 3.2 stable (from 30 May 1999)machine panic tonight, trying :> > to load the oss driver, which is not too shocking. What was shocking :> > was the damage done to my filesystem. The automatic fsck failed, :> > with an UNEXPECTED SOFT UPDATES INCONSISTNCY. PARTIALLY ALLOCATED :> > INODE I=39684. :> > :> What kernel-config are you using? :> I have had several fs-crashes because of a to high configured maxusers. : :The only diffs between my config file and GENERIC are: :1. softupdates :2. no support for hardware I haven't got :3. pty is 64 : :I am not actually complaining about the panic; I think the oss :driver is a piece of crap. I just happened to have a soundcard :that they support that the FreeBSD drivers don't, and a .wav file :I wanted to listen to. What does disturb me is the damage done to :a pretty quiet filesystem. I wouldn't have thought that toasting :a whole bunch of files that were not in use would be the normal :behavior. I have seen lots of panics, but have never seen filesystem :damage as bad as this. : :David Scheidt This smells like a memory corruption problem rather then a softupdates problem. i.e. that something in the kernel overwrote random kernel memory which happened to correspond to a filesystem buffer. There was a buffer corruption bug found in VFS/BIO recently, but it was fixed prior to the 3.2 release ( it was an getnewbuf() race, fixed in 1.193.2.4 of kern/vfs_bio.c ). -Matt Matthew Dillon <dillon@backplane.com> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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