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michubuntu
PostPosted: Thu Apr 14, 2011 2:16 pm 
Offline

Joined: Sat Mar 26, 2011 7:15 am
Posts: 9
Location: France
When I connect my USB webcam TalkCam MX8HD. (0ac8:332d)
on my smarttop, I see this message in my syslog file and the webcam doesn't work:
(I use the last kernel with fix the headless boot)
-----------------------------------------------------
Apr 14 22:06:32 seguin-desktop kernel: [ 4.055622] uvcvideo: Found UVC 1.00 device TalkCam MX8HD. (0ac8:332d)
Apr 14 22:06:32 seguin-desktop kernel: [ 4.059097] input: TalkCam MX8HD. as /devices/platform/fsl-ehci.1/usb2/2-1/2-1.2/2-
1.2:1.0/input/input2
Apr 14 22:07:30 seguin-desktop kernel: [ 62.033095] Division by zero in kernel.
Apr 14 22:07:30 seguin-desktop kernel: [ 62.033129] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.033180] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.033215] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.187841] Division by zero in kernel.
Apr 14 22:07:30 seguin-desktop kernel: [ 62.187873] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.187921] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.187956] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.337841] Division by zero in kernel.
Apr 14 22:07:30 seguin-desktop kernel: [ 62.337871] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.337917] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.337952] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.487966] Division by zero in kernel.
Apr 14 22:07:30 seguin-desktop kernel: [ 62.487997] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.488041] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.488075] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.637968] Division by zero in kernel.
Apr 14 22:07:30 seguin-desktop kernel: [ 62.637999] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.638045] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.638080] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.788095] Division by zero in kernel.
Apr 14 22:07:30 seguin-desktop kernel: [ 62.788124] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.788168] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.788202] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.938096] Division by zero in kernel.
Apr 14 22:07:30 seguin-desktop kernel: [ 62.938125] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.938169] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.938203] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.087848] Division by zero in kernel.
Apr 14 22:07:31 seguin-desktop kernel: [ 63.087877] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.087921] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.087956] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.237847] Division by zero in kernel.
Apr 14 22:07:31 seguin-desktop kernel: [ 63.237876] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.237923] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.237957] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.387849] Division by zero in kernel.
Apr 14 22:07:31 seguin-desktop kernel: [ 63.387879] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.387925] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.387960] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.539850] Division by zero in kernel.
Apr 14 22:07:31 seguin-desktop kernel: [ 63.539879] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.539925] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:31 seguin-desktop kernel: [ 63.539959] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.033499] Division by zero in kernel.
Apr 14 22:08:30 seguin-desktop kernel: [ 122.033533] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.033583] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.033619] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.188498] Division by zero in kernel.
Apr 14 22:08:30 seguin-desktop kernel: [ 122.188531] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.188578] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.188613] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.337747] Division by zero in kernel.
Apr 14 22:08:30 seguin-desktop kernel: [ 122.337780] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.337826] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.337861] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.487873] Division by zero in kernel.
Apr 14 22:08:30 seguin-desktop kernel: [ 122.487904] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.487950] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.487983] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.637874] Division by zero in kernel.
Apr 14 22:08:30 seguin-desktop kernel: [ 122.637904] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.637950] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.637986] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.787875] Division by zero in kernel.
Apr 14 22:08:30 seguin-desktop kernel: [ 122.787904] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.787949] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.787983] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.937876] Division by zero in kernel.
Apr 14 22:08:30 seguin-desktop kernel: [ 122.937907] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.937953] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:30 seguin-desktop kernel: [ 122.937988] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.088004] Division by zero in kernel.
Apr 14 22:08:31 seguin-desktop kernel: [ 123.088034] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.088080] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.088115] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.238253] Division by zero in kernel.
Apr 14 22:08:31 seguin-desktop kernel: [ 123.238283] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.238329] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.238363] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.387880] Division by zero in kernel.
Apr 14 22:08:31 seguin-desktop kernel: [ 123.387910] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.387954] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.387988] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.539078] Division by zero in kernel.
Apr 14 22:08:31 seguin-desktop kernel: [ 123.539110] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.539154] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:08:31 seguin-desktop kernel: [ 123.539188] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)

-------------------------------------------------------
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steev
 Post subject:
PostPosted: Fri Apr 15, 2011 4:58 pm 
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Genesi

Joined: Tue Feb 07, 2006 4:49 pm
Posts: 145
Location: San Antonio, TX
Hi Mich,

Could you reboot the machine and plug it in again? If possible could you also turn off the wireless (right click on the networking icon, uncheck enable wireless), and remove the module (sudo rmmod rt2870sta) before plugging in the webcam? Do you still get the div0?

Uvcvideo is the same module used by the smartbook on it's built-in webcam, so it *should* work, although currently there is no XV overlay so the performance will not be very good.

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Steev Klimaszewski, Genesi USA Inc.
Senior Software Engineer
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michubuntu
 Post subject:
PostPosted: Mon Apr 18, 2011 3:33 am 
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Joined: Sat Mar 26, 2011 7:15 am
Posts: 9
Location: France
I will try to disable the wifi before to plug the webcam, this after noon. But I've noticed one thing :

If I plug the webcam before to boot the smattop no such div/0 occurs anymore...

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Neko
 Post subject:
PostPosted: Mon Apr 18, 2011 9:28 pm 
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Site Admin

Joined: Fri Sep 24, 2004 1:39 am
Posts: 1589
Location: Austin, TX
Quote:
I will try to disable the wifi before to plug the webcam, this after noon. But I've noticed one thing :

If I plug the webcam before to boot the smattop no such div/0 occurs anymore...
It is, to the best of our knowledge, some kind of USB bug somewhere in the stack (although, who the hell knows where?)

Maybe it's probe order, sunspots, some spacetime distortion, mysterious voodoo magic, or maybe all of the above come into play and cause it.

But, the one thing we can be sure of, if you never load wireless, it never div0's. We've been asking if anyone can look into it and clarify exactly where it happens, but with no stack trace and absolutely no sure way of reproducing it.. it's difficult. The one time I had JTAG hooked up to my Smartbook, for 3 days straight, the system was on wireless and didn't log even a SINGLE extra line in dmesg after boot. Infuriating.

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topi
PostPosted: Wed May 04, 2011 2:58 am 
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Joined: Mon Apr 25, 2011 6:50 am
Posts: 3
Location: Netherlands
Quote:
When I connect my USB webcam TalkCam MX8HD. (0ac8:332d)
on my smarttop, I see this message in my syslog file and the webcam doesn't work:
(I use the last kernel with fix the headless boot)
-----------------------------------------------------
Apr 14 22:06:32 seguin-desktop kernel: [ 4.055622] uvcvideo: Found UVC 1.00 device TalkCam MX8HD. (0ac8:332d)
Apr 14 22:06:32 seguin-desktop kernel: [ 4.059097] input: TalkCam MX8HD. as /devices/platform/fsl-ehci.1/usb2/2-1/2-1.2/2-
1.2:1.0/input/input2
Apr 14 22:07:30 seguin-desktop kernel: [ 62.033095] Division by zero in kernel.
Apr 14 22:07:30 seguin-desktop kernel: [ 62.033129] [<8002faec>] (unwind_backtrace+0x0/0xe8) from [<802c7d84>] (dump_stack+
0x18/0x1c)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.033180] [<802c7d84>] (dump_stack+0x18/0x1c) from [<8002e4e0>] (__div0+0x18/0x20
)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.033215] [<8002e4e0>] (__div0+0x18/0x20) from [<8015f34c>] (Ldiv0+0x8/0x10)
Apr 14 22:07:30 seguin-desktop kernel: [ 62.187841] Division by zero in kernel.
Hi, I get the same backtrace about Division by zero on my EfikaMX that I just recently received (so the shipping kernel, 2.6.31.140.20-efikamx )

The difference for me is that it seems to bomb right after loading the sound drivers. Also, the frequency of Division messages is around 50 messages per second, so 10 times more frequent than your dump. Might also relate to the amount of kernel tasks going in the system.

topi
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wthrowe
 Post subject:
PostPosted: Sun Jul 24, 2011 1:18 pm 
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Joined: Sat May 14, 2011 3:16 pm
Posts: 1
I sporadically see tons of divide by zeros on my Efika MX as well. I patched my kernel (pulled from efikamx commit 3cb8249) with this commit so I'd get reasonable backtraces. Here's one:
Code:
Jul 18 11:18:59 mim kernel: [ 313.479472] Division by zero in kernel.
Jul 18 11:18:59 mim kernel: [ 313.479505] [<80032bfc>] (unwind_backtrace+0x0/0xec) from [<803250f4>] (dump_stack+0x18/0x1c)
Jul 18 11:18:59 mim kernel: [ 313.479559] [<803250f4>] (dump_stack+0x18/0x1c) from [<80031598>] (__div0+0x18/0x20)
Jul 18 11:18:59 mim kernel: [ 313.479596] [<80031598>] (__div0+0x18/0x20) from [<801a444c>] (Ldiv0+0x8/0x10)
Jul 18 11:18:59 mim kernel: [ 313.479633] [<801a444c>] (Ldiv0+0x8/0x10) from [<801a441c>] (__aeabi_uidivmod+0x8/0x18)
Jul 18 11:18:59 mim kernel: [ 313.479662] [<801a441c>] (__aeabi_uidivmod+0x8/0x18) from [<7f0ac204>] (RTUSBBulkOutDataPacket+0x488/0x578 [rt2870sta])
Jul 18 11:18:59 mim kernel: [ 313.479910] [<7f0ac204>] (RTUSBBulkOutDataPacket+0x488/0x578 [rt2870sta]) from [<7f0ac914>] (RTUSBKickBulkOut+0x98/0x17c [rt2870sta])
Jul 18 11:18:59 mim kernel: [ 313.480140] [<7f0ac914>] (RTUSBKickBulkOut+0x98/0x17c [rt2870sta]) from [<7f0ad800>] (RtmpUSBDataKickOut+0x20/0x24 [rt2870sta])
Jul 18 11:18:59 mim kernel: [ 313.480364] [<7f0ad800>] (RtmpUSBDataKickOut+0x20/0x24 [rt2870sta]) from [<7f09af8c>] (STA_Legacy_Frame_Tx+0x27c/0x29c [rt2870sta])
Jul 18 11:18:59 mim kernel: [ 313.480577] [<7f09af8c>] (STA_Legacy_Frame_Tx+0x27c/0x29c [rt2870sta]) from [<7f09b88c>] (STAHardTransmit+0x124/0x1ac [rt2870sta])
Jul 18 11:18:59 mim kernel: [ 313.480776] [<7f09b88c>] (STAHardTransmit+0x124/0x1ac [rt2870sta]) from [<7f07e388>] (RTMPDeQueuePacket+0x544/0x5b0 [rt2870sta])
Jul 18 11:18:59 mim kernel: [ 313.480955] [<7f07e388>] (RTMPDeQueuePacket+0x544/0x5b0 [rt2870sta]) from [<7f099fb4>] (STASendPackets+0xb4/0xc4 [rt2870sta])
Jul 18 11:18:59 mim kernel: [ 313.481132] [<7f099fb4>] (STASendPackets+0xb4/0xc4 [rt2870sta]) from [<7f0a1a64>] (rt28xx_packet_xmit+0x70/0x80 [rt2870sta])
Jul 18 11:18:59 mim kernel: [ 313.481330] [<7f0a1a64>] (rt28xx_packet_xmit+0x70/0x80 [rt2870sta]) from [<7f0a1ac0>] (rt28xx_send_packets+0x4c/0x50 [rt2870sta])
Jul 18 11:18:59 mim kernel: [ 313.481531] [<7f0a1ac0>] (rt28xx_send_packets+0x4c/0x50 [rt2870sta]) from [<802ab048>] (dev_hard_start_xmit+0x24c/0x310)
Jul 18 11:18:59 mim kernel: [ 313.481660] [<802ab048>] (dev_hard_start_xmit+0x24c/0x310) from [<802bb0c4>] (__qdisc_run+0x120/0x27c)
Jul 18 11:18:59 mim kernel: [ 313.481691] [<802bb0c4>] (__qdisc_run+0x120/0x27c) from [<802ab30c>] (dev_queue_xmit+0x200/0x384)
Jul 18 11:18:59 mim kernel: [ 313.481718] [<802ab30c>] (dev_queue_xmit+0x200/0x384) from [<802b11f8>] (neigh_resolve_output+0x320/0x360)
Jul 18 11:18:59 mim kernel: [ 313.481748] [<802b11f8>] (neigh_resolve_output+0x320/0x360) from [<802d0e00>] (ip_finish_output+0x290/0x2c8)
Jul 18 11:18:59 mim kernel: [ 313.481781] [<802d0e00>] (ip_finish_output+0x290/0x2c8) from [<802d179c>] (ip_output+0xe0/0xf4)
Jul 18 11:18:59 mim kernel: [ 313.481808] [<802d179c>] (ip_output+0xe0/0xf4) from [<802d0fcc>] (ip_local_out+0x2c/0x30)
Jul 18 11:18:59 mim kernel: [ 313.481833] [<802d0fcc>] (ip_local_out+0x2c/0x30) from [<802d29d0>] (ip_push_pending_frames+0x2ec/0x3a8)
Jul 18 11:18:59 mim kernel: [ 313.481860] [<802d29d0>] (ip_push_pending_frames+0x2ec/0x3a8) from [<802ef53c>] (udp_push_pending_frames+0x2c0/0x360)
Jul 18 11:18:59 mim kernel: [ 313.481896] [<802ef53c>] (udp_push_pending_frames+0x2c0/0x360) from [<802f0040>] (udp_sendmsg+0x4d4/0x650)
Jul 18 11:18:59 mim kernel: [ 313.481924] [<802f0040>] (udp_sendmsg+0x4d4/0x650) from [<802f7180>] (inet_sendmsg+0x58/0x64)
Jul 18 11:18:59 mim kernel: [ 313.481956] [<802f7180>] (inet_sendmsg+0x58/0x64) from [<8029a21c>] (sock_sendmsg+0xb4/0xd4)
Jul 18 11:18:59 mim kernel: [ 313.481989] [<8029a21c>] (sock_sendmsg+0xb4/0xd4) from [<8029b22c>] (sys_sendto+0xb4/0xd8)
Jul 18 11:18:59 mim kernel: [ 313.482016] [<8029b22c>] (sys_sendto+0xb4/0xd8) from [<8029b270>] (sys_send+0x20/0x28)
Jul 18 11:18:59 mim kernel: [ 313.482041] [<8029b270>] (sys_send+0x20/0x28) from [<8002df80>] (ret_fast_syscall+0x0/0x2c)
Most of the backtraces start with RTUSBBulkOutDataPacket, but I also get a small number that start with
Code:
Jul 20 10:52:40 mim kernel: [ 303.607574] [<803250f4>] (dump_stack+0x18/0x1c) from [<80031598>] (__div0+0x18/0x20)
Jul 20 10:52:40 mim kernel: [ 303.607611] [<80031598>] (__div0+0x18/0x20) from [<801a444c>] (Ldiv0+0x8/0x10)
Jul 20 10:52:40 mim kernel: [ 303.607646] [<801a444c>] (Ldiv0+0x8/0x10) from [<801a441c>] (__aeabi_uidivmod+0x8/0x18)
Jul 20 10:52:40 mim kernel: [ 303.607676] [<801a441c>] (__aeabi_uidivmod+0x8/0x18) from [<7f0a2874>] (RtmpUSBMgmtKickOut+0x70/0x12c [rt2870sta])
Jul 20 10:52:40 mim kernel: [ 303.607928] [<7f0a2874>] (RtmpUSBMgmtKickOut+0x70/0x12c [rt2870sta]) from [<7f074478>] (MlmeHardTransmitMgmtRing+0x36c/0x388 [rt2870sta])
Jul 20 10:52:40 mim kernel: [ 303.608129] [<7f074478>] (MlmeHardTransmitMgmtRing+0x36c/0x388 [rt2870sta]) from [<7f0744f0>] (MlmeHardTransmit+0x5c/0x6c [rt2870sta])
Jul 20 10:52:40 mim kernel: [ 303.608286] [<7f0744f0>] (MlmeHardTransmit+0x5c/0x6c [rt2870sta]) from [<7f074590>] (MiniportMMRequest+0x90/0xd4 [rt2870sta])
Jul 20 10:52:40 mim kernel: [ 303.608441] [<7f074590>] (MiniportMMRequest+0x90/0xd4 [rt2870sta]) from [<7f08d194>] (MlmeJoinReqAction+0x31c/0x368 [rt2870sta])
I can't really make anything of it, but hopefully someone here can.
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steev
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PostPosted: Mon Jul 25, 2011 12:43 pm 
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Genesi

Joined: Tue Feb 07, 2006 4:49 pm
Posts: 145
Location: San Antonio, TX
The wireless driver we are using is from staging, as such it's quality is... not the greatest we shall say to be nice. The rt2x00 from compat-wireless should work fine, I've been using it personally for a while now on my own machine without issues. We're considering using it instead of the rt2870sta, but we haven't got any definite plans.

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Steev Klimaszewski, Genesi USA Inc.
Senior Software Engineer
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