Re: 2.6.23-rc7-mm1 AHCI ATA errors -- won't boot

From: Jeff Garzik
Date: Mon Sep 24 2007 - 21:37:44 EST

Berck E. Nash wrote:

I get a few million of these on boot-- the system never actually boots.
Works fine in 2.6.23-rc7.

[ 50.456012] ata2.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
[ 50.462484] ata2.00: irq_stat 0x40000001
[ 50.466441] ata2.00: cmd e5/00:00:00:00:00/00:00:00:00:00/a0 tag 0
cdb 0x0 data 0
[ 50.466442] res 51/04:00:01:01:80/00:00:00:00:00/a0 Emask
0x1 (device error)
[ 50.481914] ata2.00: status: {DRDY ERR }
[ 50.485876] ata2.00: error: {ABRT }
[ 50.489533] ata2.00: configured for UDMA/133
[ 50.493839] ata2: EH complete

I've attached the entire dmesg and lspci.

Are you "git-friendly"? A few quick kernel compiles and reboots would help us narrow down the problem, given that it's a reproducible regression.

The first step would be to clone the "upstream" branch of git://

and see if the problem is reproducible there. If yes, then you have narrowed down the problem to something my ATA devel tree has introduced into -mm.

Once the blame has been squared fixed upon me :) you can use git-bisect to locate the precise change that broke your setup.

Info at or
or "man git-bisect"


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