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This trick is based upon the work of Rick van Rein (Rick’s Homepage )an many others. They developed a patch which allows you to mark bad ram pages. As I am curious I did’nt want to wait for a new version of the patch, fitting the 2.6.25 kernel. So I modified the patch to work with the current kernel.

Prerequisites

Memtest86+ (to find out which pages are bad)

Kernel sources for the 2.6.25 kernel (i.e. at kernel.org or your distri)

The patch attached to that trick

What to do

Start your machine and run memtest with the BadRam error reporting option. This may result in an output like

  badram=0x09ada0b8, 0xfffffffc

This option can directly appended to your boot entry in /boot/grub/menu.lst Get the patch an install it via

  patch -p1 < BadRam-2.6.25.1.patch 

in your kernel source directory. Compile your patched kernel an reboot it with the badram option appended. Voila no more crashes caused by allocation of faulty ram… You may want to look up

dmesg|grep Memory

to see which pages are marked bad.

Files

BadRAM-2.6.25.1.patch.txt