On Tue, Sep 27, 2011 at 10:29:06AM +0100, Russell King - ARM Linux wrote: > On Mon, Sep 26, 2011 at 05:19:39PM -0300, Fernando Endo wrote: > > - BUG: scheduling while atomic: init/1/0xffff000a > > The last figure is the preempt count. This is made up from: > > * - bits 0-7 are the preemption count (max preemption depth: 256) > * - bits 8-15 are the softirq count (max # of softirqs: 256) > * - bits 16-25 are the hardirq count (max # of nested hardirqs: 1024) > * - bit 26 is the NMI_MASK > * - bit 28 is the PREEMPT_ACTIVE flag > > That seems to be saying that preemption has been disabled 10 times. > The upper 16-bits being all-ones seems to be rather insane - maybe > there's an additional __irq_exit() or irq_exit() call somewhere in > one of your code paths. Fernando, do you have CONFIG_PREEMPT enabled in your kernel? That's not currently possible with my Cortex-M3 port (see the "Exception handling" section in the M3 wiki page for an explanation). -- Catalin
