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| /openbmc/linux/drivers/net/ethernet/sfc/ |
| H A D | rx_common.c | 458f5d92 Mon Apr 04 05:48:51 CDT 2022 Martin Habets <habetsm.xilinx@gmail.com> sfc: Do not free an empty page_ring
When the page_ring is not used page_ptr_mask is 0.
Do not dereference page_ring[0] in this case.
Fixes: 2768935a4660 ("sfc: reuse pages to avoid DMA mapping/unmapping costs")
Reported-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Martin Habets <habetsm.xilinx@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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