[plug] 2.4.24 mremap root exploit

[Tony Breeds]

On Thu, Feb 19, 2004 at 07:38:30AM +0800, Craig Ringer wrote:
 
> *gack*
> 
> I had to abort the Bonnie++ run on the RAID 5 array, because the system
> was crawling to a halt. Load avg >15, ls blocking for 30 seconds, etc.
> Bad stuff.
> 
> Something is clearly not right here. Whether it's LVM2/device-mapper (if
> so, LVM1 had the same problem), the kernel I/O scheduler, the 3ware
> driver, the 3ware card firmware, or something else I do not know.
> Suggestions appreciated.

Well I don't run LVM at all and I'm not seeing any IO  starvation.  Can
you run the same test on the same hardware w/o LVM/DM available?

Yours Tony

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