From: B K Karthik <bkkart...@pesu.pes.edu> Date: Sat, 25 Jul 2020 18:15:53 +0530
> fix slab-out-of-bounds Read in xfrm6_tunnel_alloc_spi > by checking for existance of head for the list spi_byspi spi_byspi is an array, therefore as long as xfrm6_tn is not NULL then spi_byspi will also not be NULL.
