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Date:      Tue, 13 Mar 2001 14:36:45 -0800 (PST)
From:      John Baldwin <jhb@FreeBSD.org>
To:        Matthew Jacob <mjacob@feral.com>
Cc:        alpha@FreeBSD.org, current@FreeBSD.org
Subject:   Re: new breakage in mounting root? a devfs issue?
Message-ID:  <XFMail.010313143645.jhb@FreeBSD.org>
In-Reply-To: <Pine.LNX.4.21.0103131327330.32717-100000@zeppo.feral.com>

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On 13-Mar-01 Matthew Jacob wrote:
> 
> To refresh memory:
> 
>> fatal kernel trap:
>> 
>>     trap entry = 0x4 (unaligned access fault)
>>     a0         = 0xc3615fe1a88f382
>>     a1         = 0x29
>>     a2         = 0x1b
>>     pc         = 0xfffffc0000467578
>>     ra         = 0xfffffc00004627c4
>>     curproc    = 0xfffffe0009f5dbe0
>>         pid = 1, comm = init
>> 
>> Stopped at      vfs_object_create+0x38: jsr    
>> ra,(pv),vfs_object_create+0x3c
>> <ra=0xfffffc00004627c4,pv=0xfffffc0000467540>
>> db> t
>> vfs_object_create() at vfs_object_create+0x38
>> getnewvnode() at getnewvnode+0x564
>> devfs_allocv() at devfs_allocv+0xe0
>> devfs_root() at devfs_root+0x38
>> devfs_mount() at devfs_mount+0xf0
>> vfs_mount() at vfs_mount+0x910
>> mount() at mount+0xd8
>> syscall() at syscall+0x3f4
>> XentSys1() at XentSys1+0x10
> 
> 
> Interestingly enough, as Christian had also reported, a build of a GENERIC
> kernel seems to solve this problem.
> 
> This is almost more alarming than a potential bug in vfs_object_create- as
> the
> difference between the config file I was using should not cause this.
> 
> *I* sure can't spot what config option might be different. I also had done a
> complete removal of the build directory and complete fresh build of GPLUS.
> (sounds of hair tearing).

Can you possibly try to narrow the differences down by tring out various kernel
configs in between GPLUS and GENERIC?

-- 

John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/
PGP Key: http://www.baldwin.cx/~john/pgpkey.asc
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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