hv_netvsc: use RCU to fix concurrent rx and queue changes

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[ Commit 02400fcee2 upstream. ]

The receive processing may continue to happen while the
internal network device state is in RCU grace period.
The internal RNDIS structure is associated with the
internal netvsc_device structure; both have the same
RCU lifetime.

Defer freeing all associated parts until after grace
period.

Fixes: 0cf737808a ("hv_netvsc: netvsc_teardown_gpadl() split")
Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Stephen Hemminger 2018-05-14 15:32:16 -07:00 • committed by Greg Kroah-Hartman

parent 1f3ef8a7a3

commit 9c6439c7b1

2 changed files with 22 additions and 34 deletions

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17

drivers/net/hyperv/netvsc.c

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39

drivers/net/hyperv/rndis_filter.c

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