Date: Wed, 17 Mar 2004 09:00:22 +0000 From: Holger Kipp <Holger.Kipp@alogis.com> To: jp@devnull.cz Cc: stable@freebsd.org Subject: Re: umass panic (after detaching/attaching card-reader 3 times) Message-ID: <200403170900.i2H90Rb06558@alogis.com>
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Jan Pechanec (jp@devnull.cz) wrote: > >On Sat, 6 Mar 2004, Holger Kipp wrote: > >>I experience a very repeatably but unwanted behaviour with umass/usb: >> >>System hangs/panics after detaching and attaching 8-in-1 Card Reader >>several times. Card Reader is attached to Cypress Semiconductor Slim >>Hub (ie not directly), but using the built-in hub give the same >>results. >we have similar experince with some of our new boxes based on >Via chipset. It seems to me that the attached device is innocent (same >errors as yours - uhub port errors, umass detached, umass BBB reset >failed etc.) and that the problem is somewhere on Via's side. We are >still analysing the problem - but did you get any further since then? Unfortunately not - I was still 'waiting' for someone who deals with usb/umass to shed some light on the issue or asking the right questions. (What is worse is that I don't have the time to look into this right now.) The interesting thing is that umass detach seems to happen during the BBB-whatever-cycle such that the systems seems to end up using invalid nullpointers. This imho should never happen. >Mar 6 20:43:41 katrin /kernel: umass0: BBB bulk-in clear stall failed, STALLED >Mar 6 20:43:41 katrin /kernel: umass0: at uhub2 port 4 (addr 3) disconnected >Mar 6 20:43:41 katrin /kernel: umass0: detached >Mar 6 20:43:41 katrin /kernel: (null): BBB bulk-out clear stall failed, CANCELLED >Mar 6 20:43:41 katrin /kernel: umass-sim:0:0:0:func_code 0x0901: Invalid target (target needed) >Mar 6 20:43:41 katrin last message repeated 2 times >Mar 6 20:43:41 katrin /kernel: panic: (null): Unknown state 0 Unfortunately I don't have enough resources to test this with CURRENT. I am also waiting for MFC of umass which might fix a few things. Regards, Holger Kipp
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