*BSD News Article 14983


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From: hackney@wotan.compaq.com (Greg Hackney)
Subject: Re: flock broken - I could use some help
Message-ID: <1993Apr23.180213.25332@wotan.compaq.com>
Organization: Compaq Computer Corporation
References: <1993Apr21.184636.1121@cs.few.eur.nl> <1993Apr22.183734.4448@wotan.compaq.com> <1993Apr23.071135.28560@cs.few.eur.nl>
Date: Fri, 23 Apr 1993 18:02:13 GMT
Lines: 21

In article <1993Apr23.071135.28560@cs.few.eur.nl> pk@cs.few.eur.nl writes:

> I'm pretty sure the problem is in that area though. Now, my proposed patch
> may be faulty and cause panics of its own. I suggest you have a look at
> a kernel stack trace (option DDB) at the time of the panic.

Here's the output:

# vm_fault(fe109000, fe1c8000, 1, 0) -> 1
  type c, code 0
kernel: type 12 trap, code=0
Stopped at      _lf_wakelock+0x17:      movl    0x18(%ebx),%ebx
db> trace
_lf_wakelock(fe2701a0) at _lf_wakelock+0x17
_lf_clearlock(fe270180,fe368000,fdbfffa4,14,fe368044) at _lf_clearlock+0x2c
_ufs_advlock(fe368000,fe2701c0,2,fdbfff4c,20) at _ufs_advlock+0xe8
_flock(fe37d600,fdbfffa4,fdbfff9c,fbbeeffc,0) at _flock+0xc0
_syscall(11370,0,fbbeefe0,fdbfffec,fbbeeffc) at _syscall+0xed
Bad frame pointer: 0xfbbeefe0