Re: possible BUG while using CUPS

Hi Udo,

On 11/08/07, Udo van den Heuvel [off-list ref] wrote:

Using Cups 1.2.12 on Linux 2.6.22.1.
Managing a printer from a Win2K workstation via the http interface.
I am at: http://box:631/printers
I click Set as default.
I see:
426 Upgrade Required

You must access this page using the URL
https://box:631/admin/?op=set-as-default&printer_name=HP_DESKJET_3820_USB_1.

I clikc that link and hear the ping-ping of the BUG:

This is very interesting. Can you reproduce this bug?

BUG: unable to handle kernel paging request at virtual address 730ca542
 printing eip:
730ca542
*pde = 00000000
Oops: 0000 [#1]
PREEMPT
Modules linked in: pwc nls_utf8 cifs sch_tbf ipt_recent xt_string
xt_MARK xt_length xt_tcpmss xt_mac xt_mark w83627hf hwmon_vid eeprom sit
tunnel4 nf_nat_h323 nf_conntrack_h323 nf_nat_ftp nf_conntrack_ftp
ipt_tos ipt_REDIRECT nf_nat_irc nf_conntrack_irc ipt_owner ipt_ttl ipv6
ipt_MASQUERADE iptable_nat nf_nat xt_NOTRACK iptable_raw ipt_TOS
iptable_mangle ipt_LOG xt_TCPMSS xt_limit xt_state ipt_TARPIT ipt_REJECT
iptable_filter binfmt_misc lp nvram loop snd_via82xx snd_ac97_codec
ac97_bus snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq
snd_pcm_oss snd_mixer_oss snd_pcm compat_ioctl32 videodev snd_timer
snd_page_alloc snd_mpu401_uart snd_rawmidi v4l2_common snd_seq_device
v4l1_compat parport_pc parport snd usblp i2c_viapro uhci_hcd
CPU:    0
EIP:    0060:[<730ca542>]    Not tainted VLI
EFLAGS: 00010292   (2.6.22.1 #2)
EIP is at 0x730ca542
eax: 00000000   ebx: a69845a0   ecx: 00000000   edx: 00000000
esi: 1057e3db   edi: 67c88dd0   ebp: 898c1ad5   esp: d9f97f18
ds: 007b   es: 007b   fs: 0000  gs: 0033  ss: 0068
Process cupsd (pid: 2220, ti=d9f96000 task=db549420 task.ti=d9f96000)
Stack: b717a69a 240c98ab c2e35cdc 2f6eea16 64cf0972 c0a5a2b1 ba2d3d30
f026206d
       3301069b 39222156 d15922e5 eb1da2a4 656caba4 023f7970 33d43992
cc0c5c41
       63ed81fc 5c760bf7 fe3db5c3 7cdbd9fc ba114508 0ff827b8 b51f3690
9e64614f
Call Trace:
 [<c0103aa5>] show_trace_log_lvl+0x1a/0x2f
 [<c0103b57>] show_stack_log_lvl+0x9d/0xa5
 [<c0103d2c>] show_registers+0x1cd/0x2e3
 [<c0103f40>] die+0xfe/0x200
 [<c010f899>] do_page_fault+0x432/0x505
 [<c02ff72a>] error_code+0x6a/0x70
 =======================
Code:  Bad EIP value.
EIP: [<730ca542>] 0x730ca542 SS:ESP 0068:d9f97f18


This is on a VIA Epia EK8000. ksymoops did not really help me, this is
all output I got.

Ideas?

BTW. Please try 2.6.22.2.

Regards,
Michal

-- 
LOG
http://www.stardust.webpages.pl/log/

Michal Piotrowski wrote:

On 11/08/07, Udo van den Heuvel [off-list ref] wrote:

quoted

Using Cups 1.2.12 on Linux 2.6.22.1.

(...)

quoted

I clikc that link and hear the ping-ping of the BUG:

This is very interesting. Can you reproduce this bug?

I think so. (at least: I have seen it before: clicking around in Cups
and this crash/bug/whatever.)

quoted

This is on a VIA Epia EK8000. ksymoops did not really help me, this is
all output I got.

Ideas?

BTW. Please try 2.6.22.2.

Compiling...

On 08/13/2007 11:46 AM, Udo van den Heuvel wrote:

Michal Piotrowski wrote:

quoted

On 11/08/07, Udo van den Heuvel [off-list ref] wrote:

quoted

Using Cups 1.2.12 on Linux 2.6.22.1.

(...)

quoted

quoted

I clikc that link and hear the ping-ping of the BUG:

This is very interesting. Can you reproduce this bug?

I think so. (at least: I have seen it before: clicking around in Cups
and this crash/bug/whatever.)

quoted

quoted

This is on a VIA Epia EK8000. ksymoops did not really help me, this is
all output I got.

Ideas?

BTW. Please try 2.6.22.2.

Compiling...

If you can reproduce that, do it after booting with "kstack=2048" and post
that so we can see the whole stack in the oops message.