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net: stmmac: use correct DMA buffer size in the RX descriptor
commit 583e636 upstream. We always program the maximum DMA buffer size into the receive descriptor, although the allocated size may be less. E.g. with the default MTU size we allocate only 1536 bytes. If somebody sends us a bigger frame, then memory may get corrupted. Fix by using exact buffer sizes. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net> [acj: backport v4.14 -stable - adjust context - skipped the section modifying non-existent functions in dwxgmac2_descs.c and hwif.h ] Signed-off-by: Aviraj CJ <acj@cisco.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Aaro Koskinen
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Greg Kroah-Hartman
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Dec 21, 2019
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