Re: CDRW causes Thinkpad T41 to panic

On Sunday 11 July 2004 20:37, Bruce M Simpson wrote:
> On Wed, May 26, 2004 at 05:21:14PM -1000, Kent Hauser wrote:
> > ad0: 35293MB <HTS548040MAT00> [71707/16/63] at ata0-master UDMA100
> > ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
> > ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
> > acd0: CDRW <UJDA755zDVD/CDRW> at ata1-master UDMA33
> > Memory modified after free 0xc44d8a00(508) val=1ff01ff _at_ 0xc44d8a00
>
> Again, this looks VERY, VERY similar to the behaviour which I observed
> and documented on two separate IBM T41 systems this week.
>
> Further details in my earlier posts on -mobile.

FWIW: I see something similar as well. This is with an IBM Thinkpad R31:
> atapci0: <Intel ICH3 UDMA100 controller> port 
0xa890-0xa89f,0x376,0x170-0x177,0x3f6,0x1f0-0x1f7 at device 31.1 on pci0
> ata0: at 0x1f0 irq 14 on atapci0
> ata1: at 0x170 irq 15 on atapci0
> ad0: 19077MB <IC25N020ATCS04-0> [41344/15/63] at ata0-master UDMA100
> ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
> ata1-slave: FAILURE - ATAPI_IDENTIFY no interrupt
> acd0: DVDROM <HL-DT-STDVD-ROM GDR8081N> at ata1-master PIO4

This seems to be around for quite some time already (at least 3rd of May), but 
I think I have seen it before. I work around it with disabling INVARIANTS or 
by turning the panic in uma_dbg into a printf (with no ill effects so far). 
Never was motivated enough to really look for a fix, though I reported this 
to Søren when I first saw it ... not sure what the outcome was.

Note: This is w/o atacam!

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