GCC 4.3.0 exposes a kernel bug
Posted Mar 7, 2008 22:19 UTC (Fri) by JoeBuck
In reply to: GCC 4.3.0 exposes a kernel bug
Parent article: GCC 4.3.0 exposes a kernel bug
We were arguing about this on the gcc list, and it was unclear to me whether the DF flag could actually leak from one process to another (indicating a true security bug, however minor). If a context switch occurs, wouldn't the kernel restore all of process 2's registers before entering the signal handler?
Can a kernel expert confirm or deny this? (At least, for currently deployed kernels)?
to post comments)