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SubjectRe: kiobuf using kernel pages
On Thu, 11 Nov 1999 12:56:23 +0000 (GMT), 
Alan Cox <> wrote:
>> Trying to port the SGI lcrash code to 2.3.26 ix86. It compiles, runs,
>> traps the oops, starts writing the dump to swap, dies with -EFAULT in
>> sd_raw_rw. My guess is because the buffer address is c2c00000, i.e. I
>Firstly if your machine has crashed I wouldnt recommend invoking the scsi
>disk layer. If your partition info is corrupt or the scsi malloc pool is
>corrupt you could hit anything.

Agreed. But SGI have gone to the bother of writing a free standing,
raw i/o SCSI system to "handle" dumps even when the machine has
crashed, using a pre formatted swap partition. I am not convinced
myself if it is safe or not, only experience will show. Their patch is
only against 2.2.13, I'm porting it to 2.3.26 for testing.

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