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| author |   Sean Tranchetti <stranche@codeaurora.org> | 2018-10-02 18:52:01 -0600 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-10-02 22:16:00 -0700 |
| commit | a07f388e2cde2be74b263f85df6f672fea0305a1 (patch) | |
| tree | b0c64e299e6466fffcb0d6e486f6f6ba6f81f63b | |
| parent | net: systemport: Fix wake-up interrupt race during resume (diff) | |
| download | linux-dev-a07f388e2cde2be74b263f85df6f672fea0305a1.tar.xz linux-dev-a07f388e2cde2be74b263f85df6f672fea0305a1.zip | |
net: qualcomm: rmnet: Skip processing loopback packets
RMNET RX handler was processing invalid packets that were
originally sent on the real device and were looped back via
dev_loopback_xmit(). This was detected using syzkaller.
Fixes: ceed73a2cf4a ("drivers: net: ethernet: qualcomm: rmnet: Initial implementation")
Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c index 7fd86d40a337..6908b26feb9e 100644 --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c @@ -189,6 +189,9 @@ rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb) if (!skb) goto done; + if (skb->pkt_type == PACKET_LOOPBACK) + return RX_HANDLER_PASS; + dev = skb->dev; port = rmnet_get_port(dev); |