s390/qeth: ensure linear access to packet headers
When the RX path builds non-linear skbs, the packet headers can currently spill over into page fragments. Depending on the packet type and what fields we need to access in the headers, this could cause us to go past the end of skb->data. So for non-linear packets, copy precisely the length of the necessary headers ('linear_len') into skb->data. And don't copy more, upper-level protocols will peel whatever additional packet headers they need. Fixes: 4a71df50 ("qeth: new qeth device driver") Signed-off-by:Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
5b55633f
Please register or sign in to comment