On Wed, Jan 15, 2014 at 08:13:04PM -0500, Alan Ott wrote: > So my questions are: > 1. Why don't I see a full backtrace beyond the exception stack? It's the > same when dump_stack() is called manually. No idea - it looks like you're not using frame pointers, but are using the unwinder. Full backtraces can always be created with frame pointers, it's just that unwinding seems unreliable. I think we do need to see the full backtrace here - from looking at the full state dump, I don't see any sign of the mmap_sem being held except by an attempt to process a fault, and two threads trying to do a sys_mmap_pgoff(). My suspicion therefore is that some other thread must have died while holding the mmap_sem, so there's probably a kernel oops earlier... that's my best guess at the moment without seeing the full backtrace. -- FTTC broadband for 0.8mile line: 5.8Mbps down 500kbps up. Estimation in database were 13.1 to 19Mbit for a good line, about 7.5+ for a bad. Estimate before purchase was "up to 13.2Mbit". -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
