Date: Mon, 4 Feb 2002 09:40:01 -0800 (PST) From: David Malone <dwmalone@maths.tcd.ie> To: freebsd-bugs@FreeBSD.org Subject: Re: kern/34613: kernel panic in ufsdirhash_lookup Message-ID: <200202041740.g14He1n16398@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR kern/34613; it has been noted by GNATS. From: David Malone <dwmalone@maths.tcd.ie> To: Michael Vasilenko <acid@dg.net.ua> Cc: FreeBSD-gnats-submit@freebsd.org Subject: Re: kern/34613: kernel panic in ufsdirhash_lookup Date: Mon, 04 Feb 2002 17:39:00 +0000 > DM> If it does look like random bit flips then we'll have to figure out > DM> if it is a software or hardware problem. > 000042cc 72 2e 70 6e 67 00 00 00 21 60 1b 00 1c 00 08 11 |r.png...!`......| > 000042dc 75 6e 69 76 2d 64 61 79 2e 70 6e 67 2e 6d 65 74 |univ-day.png.met| > 000042ec 61 00 35 cc 22 60 1b 00 1c 00 08 12 75 6e 69 76 |a.5."`......univ| > 000042fc 2d 77 65 65 6b 2e 70 6e 67 2e 6d 65 74 61 00 cc |-week.png.meta..| > 0000430c 23 60 1b 00 1c 00 08 13 75 6e 69 76 2d 6d 6f 6e |#`......univ-mon| > 0000431c 74 68 2e 70 6e 67 2e 6d 65 74 61 00 24 60 1b 00 |th.png.meta.$`..| Definitely a bitfilp. See the line which starts 0000430c, there are 4 bytes for the inode number, 2 bytes for the record length, 1 for the file type and 1 for the name length and then the name dirhash was looking for. We're almost certainly looking at a case of dirhash writing the correct offset in and then something corrupting it by flipping a bit. The other panic you reported is probably caused by the same sort of corruption. http://www.FreeBSD.org/cgi/query-pr.cgi?pr=34605 Is this new hardware, or was it successfully in use before you installed 4.5? If it was successfully in use before, then what version of FreeBSD were you using before? David. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-bugs" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200202041740.g14He1n16398>