Date: Thu, 7 Feb 2002 14:20:02 -0800 (PST) From: Michael Vasilenko <acid@dg.net.ua> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/34613: kernel panic in ufsdirhash_lookup Message-ID: <200202072220.g17MK2M99993@freefall.freebsd.org>
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The following reply was made to PR kern/34613; it has been noted by GNATS. From: Michael Vasilenko <acid@dg.net.ua> To: David Malone <dwmalone@maths.tcd.ie> Cc: <FreeBSD-gnats-submit@freebsd.org> Subject: Re: kern/34613: kernel panic in ufsdirhash_lookup Date: Fri, 8 Feb 2002 00:18:55 +0200 (EET) On Mon, 4 Feb 2002, David Malone wrote: DM> > DM> If it does look like random bit flips then we'll have to figure out DM> > DM> if it is a software or hardware problem. DM> DM> > 000042cc 72 2e 70 6e 67 00 00 00 21 60 1b 00 1c 00 08 11 |r.png...!`......| DM> > 000042dc 75 6e 69 76 2d 64 61 79 2e 70 6e 67 2e 6d 65 74 |univ-day.png.met| DM> > 000042ec 61 00 35 cc 22 60 1b 00 1c 00 08 12 75 6e 69 76 |a.5."`......univ| DM> > 000042fc 2d 77 65 65 6b 2e 70 6e 67 2e 6d 65 74 61 00 cc |-week.png.meta..| DM> > 0000430c 23 60 1b 00 1c 00 08 13 75 6e 69 76 2d 6d 6f 6e |#`......univ-mon| DM> > 0000431c 74 68 2e 70 6e 67 2e 6d 65 74 61 00 24 60 1b 00 |th.png.meta.$`..| DM> DM> Definitely a bitfilp. See the line which starts 0000430c, there are DM> 4 bytes for the inode number, 2 bytes for the record length, 1 for DM> the file type and 1 for the name length and then the name dirhash DM> was looking for. We're almost certainly looking at a case of dirhash DM> writing the correct offset in and then something corrupting it by DM> flipping a bit. Thank you, it's really was hardware problem (bad memory chip), you may close my second case too. -- Michael Vasilenko To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
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