diff options
| author | Stephen Hemminger <stephen@networkplumber.org> | 2018-05-15 01:32:15 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-05-25 17:17:29 +0300 |
| commit | 1f3ef8a7a3c667f72bcb20be61ec4b4214f355b2 (patch) | |
| tree | 8a30eeb128d57465c7ba81ffe2c161c47ab10915 /drivers/net | |
| parent | f9aab25e3326842b1986ecbad2af51a75c0dd646 (diff) | |
| download | linux-1f3ef8a7a3c667f72bcb20be61ec4b4214f355b2.tar.xz | |
hv_netvsc: disable NAPI before channel close
[ Commit 8348e0460ab1473f06c8b824699dd2eed3c1979d upstream. ]
This makes sure that no CPU is still process packets when
the channel is closed.
Fixes: 76bb5db5c749 ("netvsc: fix use after free on module removal")
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>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/hyperv/netvsc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c index 7e0eb99571af..a8789dc4fc9b 100644 --- a/drivers/net/hyperv/netvsc.c +++ b/drivers/net/hyperv/netvsc.c @@ -567,6 +567,10 @@ void netvsc_device_remove(struct hv_device *device) RCU_INIT_POINTER(net_device_ctx->nvdev, NULL); + /* And disassociate NAPI context from device */ + for (i = 0; i < net_device->num_chn; i++) + netif_napi_del(&net_device->chan_table[i].napi); + /* * At this point, no one should be accessing net_device * except in here @@ -578,10 +582,6 @@ void netvsc_device_remove(struct hv_device *device) netvsc_teardown_gpadl(device, net_device); - /* And dissassociate NAPI context from device */ - for (i = 0; i < net_device->num_chn; i++) - netif_napi_del(&net_device->chan_table[i].napi); - /* Release all resources */ free_netvsc_device_rcu(net_device); } |