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SubjectRe: Linux Kernel 2.6.13-rc7 (WORKS) (2.6.13, DRQ/System CRASH)
On 8/31/05, Justin Piszcz <jpiszcz@lucidpixels.com> wrote:
> All,
>
> I am trying to get everyone together on this to hopefully solve a serious
> bug that I have seen on multiple machines with:
>
> a) A Promise ATA/133 controller (ATA/100 works OK)
> b) Kernel 2.6.12 or 2.6.13 (2.6.13-rc7 appears to be OK)
>
> The drive is a Seagate 7200.8 400GB 7200RPM 8MB cache disk.
> hde: ST3400832A, ATA DISK drive
>
> With older kernels, if I *DO NOT ENABLE DMA* it does not crash.
> If I *ENABLE DMA* then proceed to do anything with the disk, it will
> FREEZE the box, no oops, etc, *FREEZE*.
>
> hdparm -t /dev/hde
> mkfs.xfs -f /dev/hde1
>
> Will freeze the box.
>
> -------
>
> Linux Kernel 2.6.13 final experiences the same problems as 2.6.12.5.
>
> I have e-mailed the list quite a few times with this issue, I am surprised
> very few people run into it.
>
> Here is the error in the logs:
>
> Aug 31 11:30:25 p34 kernel: hde: dma_timer_expiry: dma status == 0x20
> Aug 31 11:30:25 p34 kernel: hde: DMA timeout retry
> Aug 31 11:30:25 p34 kernel: PDC202XX: Primary channel reset.
> Aug 31 11:30:25 p34 kernel: hde: timeout waiting for DMA
> Aug 31 11:30:25 p34 kernel: hde: status error: status=0x58 { DriveReady
> SeekComplete DataRequest }
> Aug 31 11:30:25 p34 kernel: hde: drive not ready for command
> Aug 31 11:30:25 p34 kernel: hde: status timeout: status=0xd0 { Busy }
> Aug 31 11:30:25 p34 kernel: PDC202XX: Primary channel reset.
> Aug 31 11:30:25 p34 kernel: hde: no DRQ after issuing MULTWRITE_EXT
> Aug 31 11:30:25 p34 kernel: ide2: reset: success
>
> After this, the machine locks up with 2.6.13.
>
> With 2.6.13-rc7, I have not seen this once.

Absolutely no IDE changes from -rc7 to 2.6.13 final
and I don't see anything suspicious in the patch.

You may try using git to track this regression
(but it looks like a bad drive for me).

Bartlomiej

> Can anyone offer any insight to why this is happening? I have a few
> machines with the ATA/133 controller and 400GB drives; therefore, I'd
> prefer to fix the problem rather than hooking up older, ATA/100 drives,
> just so I can run newer kernels...
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