Hi Arun, On Tue, Apr 17, 2012 at 11:44 PM, Arun KS <getarunks@xxxxxxxxx> wrote: > > Hello Guys, > > System is working normal after this BUG. > PC is at 0x400b4614, probably a mmaped address. > > Just wondering how can this BUG happen when a process is running in user > space. > > Can it be something like this > 1) enter to kernel from userspace through some system call. > 2) kernel disables the interrupt and return to user space. Don't do that. > 3) and now it can happen in user space? Because something in userspace made a blocking call which would cause a context switch to occur and your driver erroneously left interrupts disabled. -- Dave Hylands Shuswap, BC, Canada http://www.davehylands.com _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
