virtio: fix virtio_net xmit of freed skb bug

Browse source

If we fail to transmit a packet, we assume the queue is full and put
the skb into last_xmit_skb.  However, if more space frees up before we
xmit it, we loop, and the result can be transmitting the same skb twice.

Fix is simple: set skb to NULL if we've used it in some way, and check
before sending.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>

...

This commit is contained in:

Rusty Russell 2008-05-26 17:42:42 +10:00 • committed by Jeff Garzik

parent d399cf8c04

commit 7eb2e25112

1 changed files with 9 additions and 5 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

14

drivers/net/virtio_net.c

View file