On Tuesday, September 08, 2015 12:40:08 PM Peter Zijlstra wrote: > On Mon, Sep 07, 2015 at 11:33:21PM +0200, Rafael J. Wysocki wrote: > > On Monday, September 07, 2015 11:11:19 AM Jiang Liu wrote: > > Peter, Ingo, some help from lockdep expert is needed. > > > > We have a splat that almost certainly is a false positive (the original report > > is here http://marc.info/?l=linux-kernel&m=144109156901959&w=4) and no ideas > > how to make it go away. Can you please have a look and advise? > > I can't even find the relevant code :/ > > From that email I get kernfs_fop_write() which calls > kernfs_get_active(), but that does _NOT_ call cpu_up(), so that > callchain is shite. > > The actual lockdep splat is also not really helpful, and is spraying > names over: acpi, device, sysfs and kernfs (do we really need that many > layeres of obfuscation for a simple file?) > > So, please, start by explaining the thing proper such that simple people > like me know what to look for. OK, I'll try to get that later this week. Or maybe Jiang Liu can beat me to doing that. :-) Thanks, Rafael -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
