tree f8b3a20280d8dbd5c4ea376ab1a12aa80dd81c93
parent 7bbc3d385bd813077acaf0e6fdb2a86a901f5382
author Andrea Claudi <aclaudi@redhat.com> 1631290119 +0200
committer Pablo Neira Ayuso <pablo@netfilter.org> 1631573848 +0200

ipvs: check that ip_vs_conn_tab_bits is between 8 and 20

ip_vs_conn_tab_bits may be provided by the user through the
conn_tab_bits module parameter. If this value is greater than 31, or
less than 0, the shift operator used to derive tab_size causes undefined
behaviour.

Fix this checking ip_vs_conn_tab_bits value to be in the range specified
in ipvs Kconfig. If not, simply use default value.

Fixes: 6f7edb4881bf ("IPVS: Allow boot time change of hash size")
Reported-by: Yi Chen <yiche@redhat.com>
Signed-off-by: Andrea Claudi <aclaudi@redhat.com>
Acked-by: Julian Anastasov <ja@ssi.bg>
Acked-by: Simon Horman <horms@verge.net.au>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>