2013/3/19 Richard Genoud <richard.genoud@xxxxxxxxx>: > 2013/3/7 Richard Genoud <richard.genoud@xxxxxxxxx>: >> 2013/3/6 Haiyang Zhang <haiyangz@xxxxxxxxxxxxx>: >>> I have found a simple way to reproduce this kind of warning: >>> 1) reboot the VM (because this warning can be displayed only once.) >>> 2) login to the host and open the VM [Settings] >>> 3) Temporarily change the Network adapter's option [Virtual Switch] to "Not connected". >>> 4) run dmesg, you should see the warning. >>> >>> The reason for the warning is -- netif_tx_disable() is called when the NIC >>> is disconnected. And it's called within irq context. netif_tx_disable() >>> calls local_bh_enable() which displays warning if in irq. >>> >>> The fix is to remove the unnecessary netif_tx_disable() in the netvsc_linkstatus_callback(). >>> I attached a patch. Would you like to test it on your side as well? > > I installed the patched kernel today. > here are the stats of the warings until today : > kern.log.1:Mar 12 22:32:10 devlabo kernel: [30114.506299] > ------------[ cut here ]------------ > kern.log.2:Mar 5 22:30:48 devlabo kernel: [10455.098586] > ------------[ cut here ]------------ > kern.log.2:Mar 6 22:31:25 devlabo kernel: [85552.645480] > ------------[ cut here ]------------ > kern.log.3:Feb 26 22:35:14 devlabo kernel: [37398.788119] > ------------[ cut here ]------------ > kern.log.3:Feb 27 22:34:37 devlabo kernel: [10688.187196] > ------------[ cut here ]------------ > kern.log.4:Feb 22 22:32:22 devlabo kernel: [40399.795364] > ------------[ cut here ]------------ > > So, I'll wait for one or two weeks before sending some feedback. > Ok, it has been a little bit more than 2 weeks now, and I did not see this warning any more, just the "hv_vmbus: child device vmbus_0_8 unregistered" sometimes. so it seems to be fixed ! Thanks ! Reported-by: Richard Genoud <richard.genoud@xxxxxxxxx> Tested-by: Richard Genoud <richard.genoud@xxxxxxxxx> Regards, Richard _______________________________________________ devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxx http://driverdev.linuxdriverproject.org/mailman/listinfo/devel
