On Mon, Jul 07, 2014 at 04:54:20PM +0000, Haiyang Zhang wrote: > > > -----Original Message----- > > From: Sitsofe Wheeler [mailto:sitsofe@xxxxxxxxx] > > Sent: Sunday, July 6, 2014 4:18 PM > > To: Haiyang Zhang > > Cc: KY Srinivasan; David S. Miller; devel@xxxxxxxxxxxxxxxxxxxxxx; linux- > > kernel@xxxxxxxxxxxxxxx; netdev@xxxxxxxxxxxxxxx > > Subject: [BISECTED][REGRESSION] Loading Hyper-V network drivers is racy in > > 3.14+ on Hyper-V 2012 R2 > > > > With the 3.14 kernel Hyper-V no longer reliably enables its > > networking devices in time on cloud images leading to network > > devices permanently remaining offline. > > <snip> > > the system will usually stop rebooting before 20 passes but the most > > extreme cases were always less than 100. With a pre > > b679ef73edc251f6d200a7dd2396e9fef9e36fc3 kernel it did over 390 > > passes before I manually stopped it. > > > > Originally filed on https://bugzilla.redhat.com/show_bug.cgi?id=1095387 > > and then on https://bugzilla.kernel.org/show_bug.cgi?id=78771 but without > > reply... > > > > Might also be related to > > http://thread.gmane.org/gmane.linux.kernel/1711873/focus=1733398 > > (Regression in hyperv network driver in 3.14). > > What's the memory size assigned to the Linux guest? And, have you seen > any related messages in the dmesg log after this issue? (Feel free to trim my emails when replying - it makes it easier to see your reply :-) I've had as little as 256 MBytes and as much as 4 GBytes (non-dynamic) and still seen the issue. See https://bugzilla.kernel.org/attachment.cgi?id=142201 for a recent dmesg (an older dmesg snippet can be seen on the Red Hat bugzilla). -- Sitsofe | http://sucs.org/~sits/ _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
