Dear Community,
I think I've encountered a bug with the Linux kernel which results in a
complete system lockup and which can be started without root priviliges.
It's reproducible with 2.6.20.1 and 2.6.20.2 and only x64_64 seems affected.
Here's the code which triggers the bug (originally found by me using an
only partly initialized "struct itimerval" structure - hence the strange
values in it_interval):
-----8<-----8<-----8<-----8<-----8<-----8<-----8<-----8<-----8<-----
#include <stdio.h>
#include <sys/time.h>
#include <unistd.h>
int main(int argc, char **argv) {
struct itimerval tim = {
.it_interval = {
.tv_sec = 140735669863712,
.tv_usec = 4199521
},
.it_value = {
.tv_sec = 0,
.tv_usec = 100000
}
};
setitimer(ITIMER_REAL, &tim, NULL);
while (1) sleep(1);
return 0;
}
-----8<-----8<-----8<-----8<-----8<-----8<-----8<-----8<-----8<-----
Compiled with gcc 4.1.1 with "gcc -O2 -Wall -o crash crash.c".
The sourcecode can be found at
http://www.johannes-bauer.com/crash/crash.c and my kernel configuration
is at http://www.johannes-bauer.com/crash/config
Any further questions: feel free to ask. Please CC me for any posts in
this thread.
Greetings,
Johannes
--
"A PC without Windows is like a chocolate cake without mustard."
Johannes Bauer
91054 Erlangen
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