April 18, 2012
7:31 a.m.
Hi Arun, On Tue, Apr 17, 2012 at 11:44 PM, Arun KS <getarunks@gmail.com> 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