Subject: Re: 2.6.17-rc2-mm1

From: Andy Whitcroft <[email-masked]>
Date: Tue, 02 May 2006 14:20:33 +0100

Andi Kleen wrote:
> On Monday 01 May 2006 16:24, Martin J. Bligh wrote:
> 
> 
>>double fault: 0000 [1] SMP
>>last sysfs file: /devices/pci0000:00/0000:00:06.0/resource
>>CPU 0
>>Modules linked in:
>>Pid: 20519, comm: mtest01 Not tainted 2.6.17-rc3-mm1-autokern1 #1
>>RIP: 0010:[<ffffffff8047c8b8>] <ffffffff8047c8b8>{__sched_text_start+1856}
>>RSP: 0000:0000000000000000  EFLAGS: 00010082
>>RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff805d9438
>>RDX: ffff8100db12c0d0 RSI: ffffffff805d9438 RDI: ffff8100db12c0d0
>>RBP: ffffffff805d9438 R08: 0000000000000000 R09: 0000000000000000
>>R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
>>R13: ffff8100e39bd440 R14: ffff810008003620 R15: 000002b02751726c
>>FS:  0000000000000000(0000) GS:ffffffff805fa000(0063) knlGS:00000000f7dd0460
>>CS:  0010 DS: 002b ES: 002b CR0: 000000008005003b
>>CR2: fffffffffffffff8 CR3: 00000000da399000 CR4: 00000000000006e0
>>Process mtest01 (pid: 20519, threadinfo ffff8100b1bb4000, task 
>>ffff8100db12c0d0)
>>Stack: ffffffff80579e20 ffff8100db12c0d0 0000000000000001 ffffffff80579f58
>>        0000000000000000 ffffffff80579e78 ffffffff8020b0b2 ffffffff80579f58
>>        0000000000000000 ffffffff80485520
>>Call Trace: <#DF> <ffffffff8020b0b2>{show_registers+140}
>>        <ffffffff8020b357>{__die+159} <ffffffff8020b3cc>{die+50}
>>        <ffffffff8020bba6>{do_double_fault+115} 
>><ffffffff8020aa91>{double_fault+125}
>>        <ffffffff8047c8b8>{__sched_text_start+1856} <EOE>
> 
> 
> That's really strange - i wonder why the backtracer can't find the original
> stack. Should probably add some printk diagnosis here.
> 
> Can you send the output with this patch?

Submitted, they should show up in teh matrix forthwith.  Will drop you
the output when done.

-apw