rtlwifi: Fix error when accessing unmapped memory in skb

These drivers use 9100-byte receive buffers, thus allocating an skb requires
an O(3) memory allocation. Under heavy memory loads and fragmentation, such
a request can fail. Previous versions of the driver have dropped the packet
and reused the old buffer; however, the new version introduced a bug in that
it released the old buffer before trying to allocate a new one. The previous
method is implemented here. The skb is unmapped before any attempt is made to
allocate another.

Signed-off-by: Larry Finger <[email protected]>
Cc: Stable <[email protected]>  [v3.18]
Reported-by: Eric Biggers <[email protected]>
Cc: Eric Biggers <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>

0 files changed, 0 insertions, 0 deletions