Leonardo Bras <leonardo@xxxxxxxxxxxxx> wrote: > If IPv6 is disabled on boot (ipv6.disable=1), but nft_fib_inet ends up > dealing with a IPv6 package, it causes a kernel panic in > fib6_node_lookup_1(), crashing in bad_page_fault. > > The panic is caused by trying to deference a very low address (0x38 > in ppc64le), due to ipv6.fib6_main_tbl = NULL. > BUG: Kernel NULL pointer dereference at 0x00000038 > > Fix this behavior by dropping IPv6 packages if !ipv6_mod_enabled(). Wouldn't fib_netdev.c have the same problem? If so, might be better to place this test in both nft_fib6_eval_type and nft_fib6_eval.
