> -----Original Message----- > From: Florian Westphal [mailto:[email protected]] > Sent: Thursday, February 07, 2013 5:54 AM > To: Feng Hong > Cc: [email protected]; Kees Cook; [email protected]; KY > Srinivasan; Haiyang Zhang > Subject: Regression, bisected: hyperv shutdown panics guest > > With 3.7, hyperv guest shutdown no longer works. > Instead, guest kernel throws a bunch of "BUG: scheduling-while-atomic" > errors and then dies. > > reverting > > commit 6c0c0d4d1080840eabb3d055d2fd81911111c5fd > Author: hongfeng <[email protected]> > Date: Thu Oct 4 17:12:25 2012 -0700 > poweroff: fix bug in orderly_poweroff() > > fixes this problem. > > Greping for users of orderly_poweroff() shows that hyperv isn't > the only caller that invokes the function from irq context. > > In fact, kdoc for orderly_poweroff says: > > * This may be called from any context to trigger a system shutdown. > * If the orderly shutdown fails, it will force an immediate shutdown. > > Any suggestions on how to properly fix this? > > Thanks, > Florian >
A patch has been submitted to fix this problem. It is in Greg's queue: Subject: Re: [PATCH 6/6] Drivers: hv: Execute shutdown in a thread context Regards, K. Y -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
