rootfs on nfs : oops 2.5.63

rootfs on nfs : oops 2.5.63

[Bertrand]

Hello,

I got a diskless station and i wanted to test the 2.5.* series.

I got an Oops when the kernel tries to mount the rootfs on nfs.

The kernel is build without modules, without ide, without scsi, with  nfs and root on nfs option, devfs.

The oops is shown bellow.

Thank for advice.

			Bert.


ksymoops -m /tftpboot/slaves-2.5.63.System.map : 
********************************************************************
NET4: Unix domain sockets 1.0/SMP for Linux NET4.0.
BIOS EDD facility v0.09 2003-Jan-22, 0 devices found
EDD information not available.
Looking up port of RPC 100003/2 on 213.186.***.***
Unable to handle kernel NULL pointer dereference at virtual address 0000006c
c02255d4
*pde = 00000000
Oops: 0002
CPU:    0
EIP:    0060:[<c02255d4>]    Not tainted
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010206
eax: 00000000   ebx: c17acf40   ecx: 0000006c   edx: c17d6200
esi: dfd8fd58   edi: dfd8fd58   ebp: dfd8fe94   esp: dfd8fd54
ds: 007b   es: 007b   ss: 0068
Stack: 00000000 dfd8fd58 dfd8fd58 c17acf40 c17acf40 c17addc0 dfd8fe94 c0225ae5 
       c17acf40 c17d6200 dfde94e0 dfd8fd80 00000282 c17be720 00000010 00000001 
       dfd8fe94 c17e2ec0 dfd8fe38 dfd8fe38 c0217434 c17e2f54 c17e2ec0 c02174a9 
Call Trace: [<c0225ae5>]  [<c0217434>]  [<c02174a9>]  [<c021be67>]  [<c021b80b>]  [<c0118ff0>]  [<c021775a>]  [<c0217639>]  [<c021764a>]  [<c021a9b0>]  [<c022255d>]  [<c02225ae>]  [<c011c9e6>]  [<c011cd00>]  [<c010530b>]  [<c01050a3>]  [<c0105050>]  [<c0107005>] 
Code: f0 ff 48 6c 0f 88 5a 09 00 00 f0 fe 0d 40 f7 27 c0 0f 88 57 

>>EIP; c02255d4 <rpc_depopulate+24/100>   <=====
Trace; c0225ae5 <rpc_rmdir+55/90>
Trace; c0217434 <rpc_destroy_client+44/70>
Trace; c02174a9 <rpc_release_client+49/50>
Trace; c021be67 <rpc_release_task+1a7/1d0>
Trace; c021b80b <__rpc_execute+34b/360>
Trace; c0118ff0 <default_wake_function+0/20>
Trace; c021775a <rpc_call_setup+4a/60>
Trace; c0217639 <rpc_call_sync+69/a0>
Trace; c021764a <rpc_call_sync+7a/a0>
Trace; c021a9b0 <rpc_run_timer+0/a0>
Trace; c022255d <rpc_getport_external+8d/100>
Trace; c02225ae <rpc_getport_external+de/100>
Trace; c011c9e6 <__call_console_drivers+46/60>
Trace; c011cd00 <printk+120/160>
Trace; c010530b <prepare_namespace+fb/140>
Trace; c01050a3 <init+53/1c0>
Trace; c0105050 <init+0/1c0>
Trace; c0107005 <kernel_thread_helper+5/10>
Code;  c02255d4 <rpc_depopulate+24/100>
00000000 <_EIP>:
Code;  c02255d4 <rpc_depopulate+24/100>   <=====
   0:   f0 ff 48 6c               lock decl 0x6c(%eax)   <=====
Code;  c02255d8 <rpc_depopulate+28/100>
   4:   0f 88 5a 09 00 00         js     964 <_EIP+0x964> c0225f38 <.text.lock.rpc_pipe+d0/188>
Code;  c02255de <rpc_depopulate+2e/100>
   a:   f0 fe 0d 40 f7 27 c0      lock decb 0xc027f740
Code;  c02255e5 <rpc_depopulate+35/100>
  11:   0f 88 57 00 00 00         js     6e <_EIP+0x6e> c0225642 <rpc_depopulate+92/100>

**************************************************************

Re: rootfs on nfs : oops 2.5.63

[Emmett Pate]

I'm having the same problem.

On my notebook (wireless PCMCIA, D-Link DWL650), 2.5.63 oopses immediately on 
trying to mount an NFS filesystem.  On my desktop it works fine.  I can't 
find any kernel configuration differences that look obvious.  I'll be glad to 
forward any relevant parts of the .config if it will be helpful.

I've read elsewhere that there's a simple patch that fixes this, but I haven't 
been able to find it anywhere.

Emmett Pate


On Tuesday 25 February 2003 09:13 am, Bertrand wrote:
> Hello,
>
> I got a diskless station and i wanted to test the 2.5.* series.
>
> I got an Oops when the kernel tries to mount the rootfs on nfs.
>
> The kernel is build without modules, without ide, without scsi, with  nfs
> and root on nfs option, devfs.
>
> The oops is shown bellow.
>
> Thank for advice.
>
> 			Bert.

Re: rootfs on nfs : oops 2.5.63

[Andrew Morton]

Emmett Pate <emmett@epate.com> wrote:
>
> I'm having the same problem.
> 
> On my notebook (wireless PCMCIA, D-Link DWL650), 2.5.63 oopses immediately on 
> trying to mount an NFS filesystem.

Trond quietly sent out the below patch a while back.  Could you please see if
this fixes things up?


--- 25/net/sunrpc/clnt.c~rpc_rmdir-fix	Mon Feb 24 15:47:53 2003
+++ 25-akpm/net/sunrpc/clnt.c	Mon Feb 24 15:47:53 2003
@@ -208,7 +208,8 @@ rpc_destroy_client(struct rpc_clnt *clnt
 		rpcauth_destroy(clnt->cl_auth);
 		clnt->cl_auth = NULL;
 	}
-	rpc_rmdir(clnt->cl_pathname);
+	if (clnt->cl_pathname[0])
+		rpc_rmdir(clnt->cl_pathname);
 	if (clnt->cl_xprt) {
 		xprt_destroy(clnt->cl_xprt);
 		clnt->cl_xprt = NULL;

_

Re: rootfs on nfs : oops 2.5.63

[Emmett Pate]

Works like a champ!  I really appreciate your help.

Emmett Pate


On Tuesday 25 February 2003 05:11 pm, Andrew Morton wrote:
> Emmett Pate <emmett@epate.com> wrote:
> > I'm having the same problem.
> >
> > On my notebook (wireless PCMCIA, D-Link DWL650), 2.5.63 oopses
> > immediately on trying to mount an NFS filesystem.
>
> Trond quietly sent out the below patch a while back.  Could you please see
> if this fixes things up?
>
>
> --- 25/net/sunrpc/clnt.c~rpc_rmdir-fix	Mon Feb 24 15:47:53 2003
> +++ 25-akpm/net/sunrpc/clnt.c	Mon Feb 24 15:47:53 2003
> @@ -208,7 +208,8 @@ rpc_destroy_client(struct rpc_clnt *clnt
>  		rpcauth_destroy(clnt->cl_auth);
>  		clnt->cl_auth = NULL;
>  	}
> -	rpc_rmdir(clnt->cl_pathname);
> +	if (clnt->cl_pathname[0])
> +		rpc_rmdir(clnt->cl_pathname);
>  	if (clnt->cl_xprt) {
>  		xprt_destroy(clnt->cl_xprt);
>  		clnt->cl_xprt = NULL;
>
> _

-- 
Emmett M. Pate, Jr.
EPate & Associates, Inc.
emmett@epate.com