Running qemu with 512M ram out of available 480M total invoked the OOM killer (that's obvious along with other OOM-killer stupidities like killing totally irrelevant processes) followed by the below OOPS.
Killed process 19271 (trashapplet)Out of memory: kill process 12475 (qemu) score 7899 or a childOut of memory: kill process 12475 (qemu) score 7899 or a childKilled process 12475 (qemu)Killed process 12475 (qemu)
BUG: unable to handle kernel NULL pointer dereference at virtual address 00000004 printing eip:c0153aa2*pde = 17339067*pte =