Re: [Xen-devel] kernel panic (04 Sep 08)

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

Well, it's dying in the slab allocator dereferencing a bad pointer. So
I guess the AGP/DRM stuff is trashing memory. :-(

 -- Keir

> 
> Hi Ian,
> 
> Oh, wait,
> seems this kernel panic I have here might be coming 
> from the X (or agpgart) issue on Intel chipsets 
> that Gerald Britton reported recently.
> (I'm using i915G, and this kernel panic is caused
> right after startx or display manager (gdm my case) started.
> If I don't touch X, xen keeps working fine).
> 
> I thought the logs might help to see what's happening.
> Sorry if I'm confused.
> 
> Best regards,
> D
> 
> On Wed, 08 Sep 2004 02:25:24 +0100
> Ian Pratt <Ian.Pratt@xxxxxxxxxxxx> wrote:
> (snip)
> > If you're working on the unstable tree, it's always good practice
> > to rebuild xen and the tools too. Use 'make dist' (and then
> > install all the images)
> > 
> > We only maintain interface compatibility in the stable series.
> This is thrones.honeypie.net.honeypie.net (Linux i686 2.6.8.1-xen0) 00:25:59
> 
> thrones.honeypie.net login: Oops: 0000 [#1]
> PREEMPT
> Modules linked in:
> CPU:    0
> EIP:    0061:[<c013c85f>]    Not tainted
> EFLAGS: 00213202   (2.6.8.1-xen0)
> EIP is at free_block+0x43/0xcb
> eax: 000bd780   ebx: 00200200   ecx: c5fbc000   edx: c1100000
> esi: c80fff80   edi: 00000003   ebp: c80fff8c   esp: c0451e88
> ds: 0069   es: 0069   ss: 0069
> Process swapper (pid: 0, threadinfo=c0450000 task=c03e50c0)
> Stack: c01f552e c80e0090 c80fff9c c0450000 00000005 c80e1080 c80e1090 c013d093
>        c80fff80 c80e1090 00000005 c80ffe9c c80fff80 c0450000 00000001 c013d1ef
>        c80fff80 c80e1080 00000000 c80ffe9c c0450000 c80ffff0 00000400 c0450000
> Call Trace:
>  [<c01f552e>] memmove+0x4d/0x4f
> 
>  [<c013d093>] drain_array+0x7c/0xb0
> 
>  [<c013d1ef>] cache_reap+0x77/0x20c
> 
>  [<c013d384>] reap_timer_fnc+0x0/0x2c
> 
>  [<c013d38c>] reap_timer_fnc+0x8/0x2c
> 
>  [<c0124527>] run_timer_softirq+0xe3/0x1e6
> 
>  [<c012057f>] __do_softirq+0x93/0x9c
> 
>  [<c01205cd>] do_softirq+0x45/0x47
> 
>  [<c010bfdf>] do_IRQ+0x100/0x132
> 
>  [<c01092c8>] evtchn_do_upcall+0xa8/0x111
> 
>  [<c010d8d7>] hypervisor_callback+0x33/0x49
> 
>  [<c0109c22>] xen_cpu_idle+0x6a/0x8c
> 
>  [<c010ee2e>] cpu_idle+0x2c/0x35
> 
>  [<c045269d>] start_kernel+0x1a0/0x1e9
> 
>  [<c04522bc>] unknown_bootoption+0x0/0x149
> 
> Code: 8b 53 04 8b 03 89 50 04 89 02 c7 43 04 00 02 20 00 2b 4b 0c
>  <0>Kernel panic: Fatal exception in interrupt
> In interrupt handler - not syncing
 -=- MIME -=- 
This is a multi-part message in MIME format.

--Multipart=_Thu__9_Sep_2004_00_59_12_+0900_3j46i6qUqJbnEXTC
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit


Hi Ian,

Oh, wait,
seems this kernel panic I have here might be coming 
from the X (or agpgart) issue on Intel chipsets 
that Gerald Britton reported recently.
(I'm using i915G, and this kernel panic is caused
right after startx or display manager (gdm my case) started.
If I don't touch X, xen keeps working fine).

I thought the logs might help to see what's happening.
Sorry if I'm confused.

Best regards,
D

On Wed, 08 Sep 2004 02:25:24 +0100
Ian Pratt <Ian.Pratt@xxxxxxxxxxxx> wrote:
(snip)
> If you're working on the unstable tree, it's always good practice
> to rebuild xen and the tools too. Use 'make dist' (and then
> install all the images)
> 
> We only maintain interface compatibility in the stable series.

--Multipart=_Thu__9_Sep_2004_00_59_12_+0900_3j46i6qUqJbnEXTC
Content-Type: text/x-log;
 name="xen_crash_after_startx.log"
Content-Disposition: attachment;
 filename="xen_crash_after_startx.log"
Content-Transfer-Encoding: 7bit

This is thrones.honeypie.net.honeypie.net (Linux i686 2.6.8.1-xen0) 00:25:59

thrones.honeypie.net login: Oops: 0000 [#1]
PREEMPT
Modules linked in:
CPU:    0
EIP:    0061:[<c013c85f>]    Not tainted
EFLAGS: 00213202   (2.6.8.1-xen0)
EIP is at free_block+0x43/0xcb
eax: 000bd780   ebx: 00200200   ecx: c5fbc000   edx: c1100000
esi: c80fff80   edi: 00000003   ebp: c80fff8c   esp: c0451e88
ds: 0069   es: 0069   ss: 0069
Process swapper (pid: 0, threadinfo=c0450000 task=c03e50c0)
Stack: c01f552e c80e0090 c80fff9c c0450000 00000005 c80e1080 c80e1090 c013d093
       c80fff80 c80e1090 00000005 c80ffe9c c80fff80 c0450000 00000001 c013d1ef
       c80fff80 c80e1080 00000000 c80ffe9c c0450000 c80ffff0 00000400 c0450000
Call Trace:
 [<c01f552e>] memmove+0x4d/0x4f

 [<c013d093>] drain_array+0x7c/0xb0

 [<c013d1ef>] cache_reap+0x77/0x20c

 [<c013d384>] reap_timer_fnc+0x0/0x2c

 [<c013d38c>] reap_timer_fnc+0x8/0x2c

 [<c0124527>] run_timer_softirq+0xe3/0x1e6

 [<c012057f>] __do_softirq+0x93/0x9c

 [<c01205cd>] do_softirq+0x45/0x47

 [<c010bfdf>] do_IRQ+0x100/0x132

 [<c01092c8>] evtchn_do_upcall+0xa8/0x111

 [<c010d8d7>] hypervisor_callback+0x33/0x49

 [<c0109c22>] xen_cpu_idle+0x6a/0x8c

 [<c010ee2e>] cpu_idle+0x2c/0x35

 [<c045269d>] start_kernel+0x1a0/0x1e9

 [<c04522bc>] unknown_bootoption+0x0/0x149

Code: 8b 53 04 8b 03 89 50 04 89 02 c7 43 04 00 02 20 00 2b 4b 0c
 <0>Kernel panic: Fatal exception in interrupt
In interrupt handler - not syncing

--Multipart=_Thu__9_Sep_2004_00_59_12_+0900_3j46i6qUqJbnEXTC--


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