6.6-stable review patch. If anyone has any objections, please let me know.
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From: Petr Machata petrm@nvidia.com
[ Upstream commit 8625f5748fea960d2af4f3c3e9891ee8f6f80906 ]
The bridge driver currently tolerates options that it does not recognize. Instead, it should bounce them.
Fixes: a428afe82f98 ("net: bridge: add support for user-controlled bool options") Signed-off-by: Petr Machata petrm@nvidia.com Reviewed-by: Ido Schimmel idosch@nvidia.com Acked-by: Nikolay Aleksandrov razor@blackwall.org Link: https://patch.msgid.link/e6fdca3b5a8d54183fbda075daffef38bdd7ddce.1757070067... Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- net/bridge/br.c | 7 +++++++ 1 file changed, 7 insertions(+)
diff --git a/net/bridge/br.c b/net/bridge/br.c index a6e94ceb7c9a0..a45db67197226 100644 --- a/net/bridge/br.c +++ b/net/bridge/br.c @@ -312,6 +312,13 @@ int br_boolopt_multi_toggle(struct net_bridge *br, int err = 0; int opt_id;
+ opt_id = find_next_bit(&bitmap, BITS_PER_LONG, BR_BOOLOPT_MAX); + if (opt_id != BITS_PER_LONG) { + NL_SET_ERR_MSG_FMT_MOD(extack, "Unknown boolean option %d", + opt_id); + return -EINVAL; + } + for_each_set_bit(opt_id, &bitmap, BR_BOOLOPT_MAX) { bool on = !!(bm->optval & BIT(opt_id));