Stephen Hemminger 8195b1396e hv_netvsc: fix deadlock on hotplug ... When a virtual device is added dynamically (via host console), then the vmbus sends an offer message for the primary channel. The processing of this message for networking causes the network device to then initialize the sub channels. The problem is that setting up the sub channels needs to wait until the subsequent subchannel offers have been processed. These offers come in on the same ring buffer and work queue as where the primary offer is being processed; leading to a deadlock. This did not happen in older kernels, because the sub channel waiting logic was broken (it wasn't really waiting). The solution is to do the sub channel setup in its own work queue context that is scheduled by the primary channel setup; and then happens later. Fixes: 732e49850c ("netvsc: fix race on sub channel creation") Reported-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-09-11 14:21:30 -07:00
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hyperv_net.h	hv_netvsc: fix deadlock on hotplug	2017-09-11 14:21:30 -07:00
Kconfig
Makefile
netvsc_drv.c	hv_netvsc: fix deadlock on hotplug	2017-09-11 14:21:30 -07:00
netvsc.c	hv_netvsc: fix deadlock on hotplug	2017-09-11 14:21:30 -07:00
rndis_filter.c	hv_netvsc: fix deadlock on hotplug	2017-09-11 14:21:30 -07:00