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| author | Igor Druzhinin <igor.druzhinin@citrix.com> | 2017-03-10 21:36:22 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-03-12 23:44:43 -0700 |
| commit | b17075d5c1988b83f840d272c795ac17d57ce804 (patch) | |
| tree | b760831992b881a42e1c3ad3990855ac8a989088 /drivers/net/xen-netback/netback.c | |
| parent | e37791ec1ad785b59022ae211f63a16189bacebf (diff) | |
| download | talos-obmc-linux-b17075d5c1988b83f840d272c795ac17d57ce804.tar.gz talos-obmc-linux-b17075d5c1988b83f840d272c795ac17d57ce804.zip | |
xen-netback: fix race condition on XenBus disconnect
In some cases during XenBus disconnect event handling and subsequent
queue resource release there may be some TX handlers active on
other processors. Use RCU in order to synchronize with them.
Signed-off-by: Igor Druzhinin <igor.druzhinin@citrix.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/xen-netback/netback.c')
| -rw-r--r-- | drivers/net/xen-netback/netback.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/xen-netback/netback.c b/drivers/net/xen-netback/netback.c index f9bcf4a665bc..602d408fa25e 100644 --- a/drivers/net/xen-netback/netback.c +++ b/drivers/net/xen-netback/netback.c @@ -214,7 +214,7 @@ static void xenvif_fatal_tx_err(struct xenvif *vif) netdev_err(vif->dev, "fatal error; disabling device\n"); vif->disabled = true; /* Disable the vif from queue 0's kthread */ - if (vif->queues) + if (vif->num_queues) xenvif_kick_thread(&vif->queues[0]); } |
