lkml.org 
[lkml]   [2018]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    From
    Subject[PATCH AUTOSEL 4.14 54/61] net: qualcomm: rmnet: Skip processing loopback packets
    Date
    From: Sean Tranchetti <stranche@codeaurora.org>

    [ Upstream commit a07f388e2cde2be74b263f85df6f672fea0305a1 ]

    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>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c | 3 +++
    1 file changed, 3 insertions(+)

    diff --git a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
    index 929fb8d96ec0..8d979fef5fc7 100644
    --- a/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
    +++ b/drivers/net/ethernet/qualcomm/rmnet/rmnet_handlers.c
    @@ -205,6 +205,9 @@ rx_handler_result_t rmnet_rx_handler(struct sk_buff **pskb)
    if (!skb)
    return RX_HANDLER_CONSUMED;

    + if (skb->pkt_type == PACKET_LOOPBACK)
    + return RX_HANDLER_PASS;
    +
    dev = skb->dev;
    port = rmnet_get_port(dev);

    --
    2.17.1
    \
     
     \ /
      Last update: 2018-10-16 06:24    [W:4.068 / U:0.092 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site