Date: Tue, 27 Nov 2007 10:50:48 +0200 From: Andriy Gapon <avg@icyb.net.ua> To: Matthias Schmidt <schmidtm@mathematik.uni-marburg.de> Cc: freebsd-current@freebsd.org Subject: Re: 7.0-BETA3 kernel panic when unplugging USB stick Message-ID: <474BDA68.1090209@icyb.net.ua> In-Reply-To: <1196108585.00833572.1196096401@10.7.7.3> References: <1196083425.00833381.1196073005@10.7.7.3> <20071126111520.GA29188@soaustin.net> <1196108585.00833572.1196096401@10.7.7.3>
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on 26/11/2007 18:50 Matthias Schmidt said the following: > Hi, > > * Mark Linimon wrote: >> On Mon, Nov 26, 2007 at 11:00:45AM +0100, Matthias Schmidt wrote: >>> When I plugged out the stick, I got the below messages followed by a >>> kernel panic: >> Unfortunately, a well-known problem that will require some serious >> re-architecting to fix. > > OK, thanks for the answer. Could you elaborate on that topic a bit > further. Is there a difference between unplugging a "recognized" USB > stick and an "unrecognized" USB stick? Not an answer to this particular question but to the thread in general: I have here certain combination of a card reader and a miniSD card that causes the same symptom. If I use the card with other reader - everything's OK, if I use the reader with other card - everything's OK, use them together - very strange problems: the card is not recognized, some error messages are spewed onto console every now and then, panic on plugging out. I just gave up, blaming this on hardware incompatibility and cursed the vendors :-) As additional information point: the combination didn't work with other OSes I tried, neither Linux nor Windows 2K recognized the card. But they didn't panic. Just in case: the reader - Trust CR-1420P the card - SanDisk SDSDM-2048 So it might happen that you also have a hardware problem with your USB stick. Panic might be a result of that plus certain fragility of FreeBSD USB stack + CAM. -- Andriy Gapon
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