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Subject: Re: 2.6.18-rt1
From: john stultz <johnstul@us.ibm.com>
To: "K.R. Foley" <kr@cybsft.com>
Cc: tglx@linutronix.de, Ingo Molnar <mingo@elte.hu>,
       linux-kernel@vger.kernel.org, "Paul E. McKenney" <paulmck@us.ibm.com>,
       Dipankar Sarma <dipankar@in.ibm.com>,
       Arjan van de Ven <arjan@infradead.org>
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On Wed, 2006-09-20 at 15:50 -0500, K.R. Foley wrote:
> Thomas Gleixner wrote:
> > On Wed, 2006-09-20 at 15:33 -0500, K.R. Foley wrote:
> >> DOH! The log had two different boots in it. :( Let's try this again. By
> >> the way, you may notice from my screw up that this is pretty much the
> >> same oops that I got with 2.6.17-rt*. I have been getting this on all of
> >> my SMP systems since we went past 2.6.16.
> > 
> > Which module is modprobed ?
> > 
> > 	tglx
> > 
> > 
> > 
> How can I tell which particular module is being loaded? The last thing I
> see on the console before the oops is that it is starting udev. I am
> including the rest of the boot log below in hopes that will help.
> Suggestions? Something else I can provide?
> 
[snip]
>kjournald starting.  Commit interval 5 seconds
> EXT3-fs: mounted filesystem with ordered data mode.
> BUG: unable to handle kernel paging request at virtual address f3010000
>  printing eip:
> *pde = 00000000
> Oops: 0000 [#1]
> PREEMPT SMP
> Modules linked in:
> CPU:    1
> EIP:    0060:[<c0131e02>]    Not tainted VLI
> EFLAGS: 00010283   (2.6.18-rt2 #4)
> EIP is at lookup_symbol+0x11/0x35
> eax: 00000001   ebx: e0830e08   ecx: c036ff60   edx: c036dd94
> esi: f3010000   edi: e0830e08   ebp: df657e74   esp: df657e68
> ds: 007b   es: 007b   ss: 0068   preempt: 00000001
> Process modprobe (pid: 1366, ti=df656000 task=dfc68e90 task.ti=df656000)
> Stack: e083c780 00000c00 e0830e08 df657e90 c0131e6f df657ea8 df657ea4
> e083c780
>        00000c00 e0830e08 df657eb8 c0132c21 00000001 00000012 e082d074
> 00000000
>        df657ecc e083a434 00000c00 e082d074 df657edc c0133188 e083c780
> 00000000
> Call Trace:
>  [<c01037a1>] show_stack_log_lvl+0x87/0x8f
>  [<c010391b>] show_registers+0x12f/0x198
>  [<c0103b0c>] die+0x114/0x1c6
>  [<c0111196>] do_page_fault+0x3f2/0x4c8
>  [<c0103481>] error_code+0x39/0x40
>  [<c0131e6f>] __find_symbol+0x25/0x2a5
>  [<c0132c21>] resolve_symbol+0x27/0x5f
>  [<c0133188>] simplify_symbols+0x83/0xf3
>  [<c0133e65>] load_module+0x720/0xbb8
>  [<c013435f>] sys_init_module+0x3f/0x1b5
>  [<c0102969>] sysenter_past_esp+0x56/0x79
> Code: eb 11 8b 75 f0 41 83 c2 28 0f b7 46 30 39 c1 72 c9 31 c0 5a 59 5b
> 5e 5f 5d c3 55 89 e5 57 56 53 89 c3 39 ca 73 22 8b 72 04 89 df <ac> ae
> 75 08 84 c0 75 f8 31 c0 eb 04 19 c0 0c 01 85 c0 75 04 89
> EIP: [<c0131e02>] lookup_symbol+0x11/0x35 SS:ESP 0068:df657e68
> 


I'm seeing a similar issue. Although the log is a bit futzed. Maybe its
the sd_mod?

 at virtual address 75010000le kernel paging requestproc filesystem

 printing eip:

Creating /dev
c01372d5
Starting udev
L*pde = cccccccc
oading sd_mod.kostopped custom tracer.
 module
Oops: 0000 [#1]
PREEMPT SMP
Modules linked in:
CPU:    3
EIP:    0060:[<c01372d5>]    Not tainted VLI
EFLAGS: 00010293   (2.6.18-rt3johnsmp #1)
EIP is at lookup_symbol+0x15/0x37
eax: ffffffff   ebx: f88209a0   ecx: c03916fc   edx: c038eba0
esi: 75010000   edi: f881a405   ebp: c7d01ea4   esp: c7d01e64
ds: 007b   es: 007b   ss: 0068   preempt: 00000001
Process insmod (pid: 462, ti=c7d00000 task=f7d6c1f0 task.ti=c7d00000)
Stack: f8821e00 f881a405 c0137345 f881a405 c038c658 c03916fc f88209a0 f8821e00
       f881a405 00000000 c0138145 f881a405 c7d01ea0 c7d01ea4 00000001 00000000
       f881a405 f88209a0 00000500 0000003c c01386d2 f88193d0 0000000b f881a405
Call Trace:
 [<c0137345>] __find_symbol+0x26/0x2e0
 [<c0138145>] resolve_symbol+0x23/0x5f
 [<c01386d2>] simplify_symbols+0x7e/0xf0
 [<c013942d>] load_module+0x7c4/0xc14
 [<c01398dd>] sys_init_module+0x3d/0x1ae
 [<c01029d9>] sysenter_past_esp+0x56/0x79
Code: c8 eb 0e 0f b7 45 30 41 83 c2 28 39 c1 72 ca 31 c0 5b 5e 5f 5d c3 57 56 8b 4c 24 14 8b 54 24 10 39 ca 73 24 8b 72 04 8b 7c 24 0c <ac> ae 75 08 84 c0 75 f8 31 c0 eb 04 19 c0 0c 01 85 c0 75 04 89
EIP: [<c01372d5>] lookup_symbol+0x15/0x37 SS:ESP 0068:c7d01e64
 ERROR: /bin/insmod exited abnormally! (pid 462)
Loading jbd.ko module


thanks
-john


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