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Re: Timing critical portions of XFS at startup?

To: Steve Lord <lord@xxxxxxx>
Subject: Re: Timing critical portions of XFS at startup?
From: "Ian S. Nelson" <ian.nelson@xxxxxxxxxxxx>
Date: Fri, 30 Nov 2001 11:51:46 -0700
Cc: Eric Sandeen <sandeen@xxxxxxx>, "linux-xfs@xxxxxxxxxxx" <linux-xfs@xxxxxxxxxxx>
Organization: Echostar
References: <3C07BDD9.B71E5600@echostar.com> <1007140779.16790.11.camel@stout.americas.sgi.com> <3C07C251.273312EB@echostar.com> <3C07D2D5.65A78599@echostar.com> <1007145351.4099.13.camel@jen.americas.sgi.com>
Reply-to: ian.nelson@xxxxxxxxxxxx
Sender: owner-linux-xfs@xxxxxxxxxxx
That's what I gather.  I disassembled the kernel and it's blowing up when it
dereferences *tp in xfs_trans_count_vecs on line 4 of the function.     I have 
32MB
of RAM in the box.  Is this a kernel memory allocation failure?  There aren't
really any user mode apps running.

thanks,
Ian

Steve Lord wrote:

> On Fri, 2001-11-30 at 12:41, Ian S. Nelson wrote:
> > Unable to handle kernel NULL pointer dereference at virtual address 0000000d
> >  printing eip:
> > c019d8ff
> > *pde = 00000000
> > Oops: 0000
> > CPU:    0
> > EIP:    0010:[<c019d8ff>]
> > EFLAGS: 00010246
> > eax: 0000000d   ebx: c10a8c00   ecx: c11a5060   edx: 00000000
> > esi: c10a8c00   edi: c11a51a0   ebp: 00000000   esp: c10b7c24
> > ds: 0018   es: 0018   ss: 0018
> > Process init (pid: 1, stackpage=c10b7000)
> > Stack: c10a8c00 c10a8c00 c11a51a0 c019d722 c11a5060 00000002 c10b7d6c 
> > c11a51a0
> >
> >        c11a2060 00000070 ffffffff ffffffff 00000000 c027e33c c10a8c00 
> > c01272f0
> >
> >        00000000 c012758a 00000246 c10bf82c 00000070 00000001 c10bf82c 
> > 00000001
> >
> > Call Trace: [<c019d722>] [<c01272f0>] [<c012758a>] [<c012465d>] [<c01b3c2c>]
> > [<c01b3c2c>] [<c019cdc7>]
> >        [<c0163ad4>] [<c018b592>] [<c01a2605>] [<c01a1b3c>] [<c0188e9e>]
> > [<c01a189c>] [<c01ae04e>] [<c01a1b3c>]
> >        [<c013fdd5>] [<c012a739>] [<c0137034>] [<c012b58c>] [<c012b88c>]
> > [<c0106d93>]
> >
> > Code: 8b 00 26 10 57 be 01 00 00 00 e8 42 17 00 00 89 c3 83 c4 04
> > Kernel panic: Attempted to kill init!
> >
> > This one appears to hang up in xfs_trans_count_vecs.
> >
>
> You are almost certainly running out of memory - time to start looking
> for things to prune out of your kernel/user space. How much memory do
> you have, 12M is the smallest system I remember getting very far with
> XFS.
>
> Steve
>
> --
>
> Steve Lord                                      voice: +1-651-683-3511
> Principal Engineer, Filesystem Software         email: lord@xxxxxxx


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