On Wed, Nov 19, 2014 at 10:40:10AM -0800, Linus Torvalds wrote: > On Tue, Nov 18, 2014 at 3:15 PM, Andy Lutomirski <l...@amacapital.net> wrote: > > On x86, sleeping while on an IST or irq stack has a surprisingly > > good chance of working, but it can also fail dramatically. Add an > > arch hook to allow schedule and __might_sleep to catch sleeping on > > the wrong stack. > > Why doesn't the normal in_interrupt() test catch this?
The exception handlers which use the IST stacks don't necessarily set irq count. Maybe they should. -Andi -- a...@linux.intel.com -- Speaking for myself only. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
