Messages in this thread | | | Date | Sun, 09 Sep 2007 00:07:48 +0300 | From | Lasse Kärkkäinen <> | Subject | Re: 2.6.23-rc3 USB segfaults + urb status -32 |
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Sorry about late reply. I have been extremely busy with other things.
> Does 2.6.22 work fine?
Not perfect, but it does not crash spontaneously. I have been running 2.6.22-ck1 since my last email with only one crash and today I have tortured 2.6.22.5 as badly as I can (switching bConfigurationValue of the sound card, unplugging USB devices on fly, doing heavy I/O, etc), without crashes.
However, with 2.6.23-rc5 I still got segfaults on boot¹ (log1), a few dozen urb status -32 messages by powering off the sound card while it was in use (log2), but no crashes there. It did finally crash (log3), though, after about three hours of coding + listening to music on text console (no Nvidia drivers nor any other external modules). Apparently it reset all USB buses, including the one that my system disk is connected to (there is nothing else on the same port), effectively killing the system, even though technically it didn't crash.
It also seems that .23-rc5 no longer exposes bConfigurationValue and a few other settings under /sys/bus/usb/devices/*/, so I couldn't test if switching the bConfigurationValue of the sound card still causes crashes² there (it has been a reliable way to do that in the past).
I could not reproduce the excessive log flood of urb status -32, mentioned in my original message.
The logs are here: http://delenn.homelinux.net/kernel-usb/
¹) I gather that usb_id is something related to udev. It does not crash with .22 kernels, only with the .23 series. ²) OOPSes, to be specific, IIRC.
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