virtio-net: correctly check num_buf during err path

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If we successfully linearize the packet, num_buf will be set to zero
which may confuse error handling path which assumes num_buf is at
least 1 and this can lead the code tries to pop the descriptor of next
buffer. Fixing this by checking num_buf against 1 before decreasing.

Fixes: 4941d472bf ("virtio-net: do not reset during XDP set")
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Jason Wang 2018-05-22 11:44:30 +08:00 • committed by David S. Miller

parent 5d458a13dd

commit 850e088d5b

1 changed files with 1 additions and 1 deletions

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drivers/net/virtio_net.c

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