Erase the kernel stack of a process, run awhile, and then see how many bytes of that kernel stack changed?
I'm interested in guessing how close to overflow I commonly am running.
http://marc.theaimsgroup.com/?l=kernelnewbies&s=stack+depth tells me: "i386 ... kernel stack is a (per process) area of 8KBytes".
On my wn I discovered that inserting the bonehead newbie declaration { char buf[4 + 65530]; } into cdrom.ko along with some other seemingly innocent code makes the kernel go boom. I do not know if in fact thus I did ask to allot 65534 bytes out of 8192, but I figure I may have.
Pat LaVarre
-- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
