[plug] 2.4.24 mremap root exploit

[Craig Ringer]

On Thu, 2004-02-19 at 07:31, Craig Ringer wrote:
> 
> I'm currently playing with Bonnie++ to see what thrashing the system
> turns up. As it's running live services, the benchmarks won't be fair,
> but should be somewhat informative nonetheless.

*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.

Craig Ringer