Hi All:
We are using a USB 3G card(HUAWEI e180) and wvdial+pppd(version 2.4.5)
program. Sometimes kernel will crash when pppd disconnect the link. Our cpu
platform is AMCC ppc405EX and kernel version is 2.6.37-rc4.
The following is log info when oops happened.
Unable to handle kernel paging request for data at address 0x000000d8
Faulting instruction address: 0xc0175a5c
Oops: Kernel access of bad area, sig: 11 [#1]
PowerPC 40x Platform
last sysfs file: /sys/kernel/uevent_seqnum
Modules linked in:
NIP: c0175a5c LR: c0175d9c CTR: c0211b6c
REGS: c77f7d50 TRAP: 0300 Not tainted (2.6.37-rc4)
MSR: 00021030 <ME,CE,IR,DR> CR: 88482028 XER: 2000005f
DEAR: 000000d8, ESR: 00000000
TASK = c71ec000[1500] 'wvdial' THREAD: c284e000
GPR00: 00021030 c77f7e00 c71ec000 00000000 0000000e 00000000 0000000e
c0410580
GPR08: c683db00 00000000 00000001 c03c51f8 88482028 10073ef4 ffffffb9
ffffff94
GPR16: 00000000 fde037e0 00200200 00100100 00000001 ffffff8d c712ca0c
00000000
GPR24: c71120d4 00000000 00000000 0000000e 00021030 00000000 00000000
0000000e
NIP [c0175a5c] tty_buffer_request_room+0x2c/0x194
LR [c0175d9c] tty_insert_flip_string_fixed_flag+0x3c/0xb0
Call Trace:
[c77f7e00] [00000003] 0x3 (unreliable)
[c77f7e30] [c0175d9c] tty_insert_flip_string_fixed_flag+0x3c/0xb0
[c77f7e60] [c0211cd0] usb_wwan_indat_callback+0x164/0x170
[c77f7e80] [c01e541c] usb_hcd_giveback_urb+0x5c/0xdc
[c77f7e90] [c01f65f0] ehci_urb_done+0xe4/0xf8
[c77f7eb0] [c01f66b8] qh_completions+0xb4/0x4d0
[c77f7f10] [c01f7788] ehci_work+0xdc/0x990
[c77f7f60] [c01fb014] ehci_irq+0x1c0/0x224
[c77f7f90] [c01e5984] usb_hcd_irq+0x68/0xa8
[c77f7fa0] [c0052848] handle_IRQ_event+0x54/0x12c
[c77f7fc0] [c00553ac] handle_level_irq+0xa0/0x13c
[c77f7fd0] [c0017ca4] uic_irq_cascade+0x100/0x128
[c77f7ff0] [c000cdb4] call_handle_irq+0x18/0x28
[c284ff10] [c0005230] do_IRQ+0xa4/0x140
[c284ff40] [c000da98] ret_from_except+0x0/0x18
Instruction dump:
4e800020 9421ffd0 7c0802a6 7d800026 bf410018 90010034 91810014 7c7e1b78
7c9f2378 7f8000a6 5780045e 7c000124 <83a300d8> 2e1d0000 4192014c 813d0010
Kernel panic - not syncing: Fatal exception in interrupt
Call Trace:
[c77f7c80] [c000700c] show_stack+0x44/0x16c (unreliable)
[c77f7cc0] [c00211f4] panic+0xa4/0x1dc
[c77f7d10] [c000abd8] die+0x190/0x19c
[c77f7d30] [c001091c] bad_page_fault+0xc0/0x108
[c77f7d40] [c000d904] handle_page_fault+0x7c/0x80
[c77f7e00] [00000003] 0x3
[c77f7e30] [c0175d9c] tty_insert_flip_string_fixed_flag+0x3c/0xb0
[c77f7e60] [c0211cd0] usb_wwan_indat_callback+0x164/0x170
[c77f7e80] [c01e541c] usb_hcd_giveback_urb+0x5c/0xdc
[c77f7e90] [c01f65f0] ehci_urb_done+0xe4/0xf8
[c77f7eb0] [c01f66b8] qh_completions+0xb4/0x4d0
[c77f7f10] [c01f7788] ehci_work+0xdc/0x990
[c77f7f60] [c01fb014] ehci_irq+0x1c0/0x224
[c77f7f90] [c01e5984] usb_hcd_irq+0x68/0xa8
[c77f7fa0] [c0052848] handle_IRQ_event+0x54/0x12c
[c77f7fc0] [c00553ac] handle_level_irq+0xa0/0x13c
[c77f7fd0] [c0017ca4] uic_irq_cascade+0x100/0x128
[c77f7ff0] [c000cdb4] call_handle_irq+0x18/0x28
[c284ff10] [c0005230] do_IRQ+0xa4/0x140
[c284ff40] [c000da98] ret_from_except+0x0/0x18
Rebooting in 1 seconds..
Any suggestions will be very appreciated.
Regards,
YunBing
Shanghai Accurate Video Info-Tech Co.,Ltd.
Room 302-306, No.1 Building, No.33 Le Shan Road, Shanghai, 200030
TEL: 86-21-51556408-17(Ext.)
FAX: 86-21-51556407
Company Homepage: http://www.avit.org.cn
On Wed, Dec 08, 2010 at 09:55:09PM +0800, baoyb wrote:
> Hi All:
>
> We are using a USB 3G card(HUAWEI e180) and wvdial+pppd(version
> 2.4.5) program. Sometimes kernel will crash when pppd disconnect the
> link. Our cpu platform is AMCC ppc405EX and kernel version is
> 2.6.37-rc4.
Can you try 2.6.37-rc5 and see if that fixed the issue? A number of tty
fixes went in between those two versions that should have resolved this.
thanks,
greg k-h
On środa, 8 grudnia 2010 o 14:55:09 baoyb wrote:
> Hi All:
>
> We are using a USB 3G card(HUAWEI e180) and wvdial+pppd(version 2.4.5)
> program. Sometimes kernel will crash when pppd disconnect the link. Our cpu
> platform is AMCC ppc405EX and kernel version is 2.6.37-rc4.
> The following is log info when oops happened.
>
I created a Bugzilla entry at
https://bugzilla.kernel.org/show_bug.cgi?id=24582
for your bug report, please add your address to the CC list in there, thanks!
--
Maciej Rutecki
http://www.maciek.unixy.pl
Hi All:
I have tested 2.6.37-rc5 and the bug still exist.
I also tested 2.6.32.24, the oops frequency is much lower than 2.6.37. (Only
happened 2 times in one week).
Regards,
Baoyb
--------------------------------------------------
From: "Greg KH" <[email protected]>
Sent: Wednesday, December 08, 2010 11:07 PM
To: "baoyb" <[email protected]>
Cc: <[email protected]>; <[email protected]>
Subject: Re: Kernel Oops at tty_buffer_request_room when using pppd program
(2.6.37-rc4)
> On Wed, Dec 08, 2010 at 09:55:09PM +0800, baoyb wrote:
>> Hi All:
>>
>> We are using a USB 3G card(HUAWEI e180) and wvdial+pppd(version
>> 2.4.5) program. Sometimes kernel will crash when pppd disconnect the
>> link. Our cpu platform is AMCC ppc405EX and kernel version is
>> 2.6.37-rc4.
>
> Can you try 2.6.37-rc5 and see if that fixed the issue? A number of tty
> fixes went in between those two versions that should have resolved this.
>
> thanks,
>
> greg k-h
>
> __________ Information from ESET NOD32 Antivirus, version of virus
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>
> The message was checked by ESET NOD32 Antivirus.
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>