Date: Thu, 8 Mar 2012 14:50:14 GMT From: Mark Tinguely <marktinguely@gmail.com> To: freebsd-arm@FreeBSD.org Subject: Re: arm/162159: [panic] USB errors leading to panic on DockStar 9.0-RC1/arm Message-ID: <201203081450.q28EoEo4030465@freefall.freebsd.org>
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The following reply was made to PR arm/162159; it has been noted by GNATS. From: Mark Tinguely <marktinguely@gmail.com> To: bug-followup@FreeBSD.org, crest@tzi.de Cc: Subject: Re: arm/162159: [panic] USB errors leading to panic on DockStar 9.0-RC1/arm Date: Thu, 8 Mar 2012 08:16:39 -0600 I am seeing something like this on a different ARM platform, but the USB code may be a cousin to the mv code. Do you still have this setup? Could you take to ethernet card out of the kernel - removing the ethernet helps in my case. Could a problem be tickled by interrupt handling? I did the following test: $ dd if=/dev/zero of=r0 bs=4096 count=16k $ od r0 0000000 000000 000000 000000 000000 000000 000000 000000 000000 * 400000000 $ cp r0 r1 ; cp r1 r2 ; cp r2 r3 ; cp r3 r4 ; cp r4 r5 ; cp r5 r6; diff r0 r6 Many time there is a corruption at about r2 or r3. If I take the ethernet card out of the kernel, the problem happens less often. I use zero because it is easy to see where things go wrong. If they are different, start doing "od" on the copied files see if you see 0x377 in the first corrupted file. --Mark.
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