From: Daniel Jurgens Date: Tue, 5 Dec 2017 20:30:02 +0000 (+0200) Subject: IB/core: Don't enforce PKey security on SMI MADs X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=74b6274f8c5e81d7243ca2dea4f80c8585b3d0e0;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git IB/core: Don't enforce PKey security on SMI MADs commit 0fbe8f575b15585eec3326e43708fbbc024e8486 upstream. Per the infiniband spec an SMI MAD can have any PKey. Checking the pkey on SMI MADs is not necessary, and it seems that some older adapters using the mthca driver don't follow the convention of using the default PKey, resulting in false denials, or errors querying the PKey cache. SMI MAD security is still enforced, only agents allowed to manage the subnet are able to receive or send SMI MADs. Reported-by: Chris Blake Fixes: 47a2b338fe63 ("IB/core: Enforce security on management datagrams") Signed-off-by: Daniel Jurgens Reviewed-by: Parav Pandit Signed-off-by: Leon Romanovsky Signed-off-by: Doug Ledford Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/infiniband/core/security.c b/drivers/infiniband/core/security.c index a337386652b0..feafdb961c48 100644 --- a/drivers/infiniband/core/security.c +++ b/drivers/infiniband/core/security.c @@ -739,8 +739,11 @@ int ib_mad_enforce_security(struct ib_mad_agent_private *map, u16 pkey_index) if (!rdma_protocol_ib(map->agent.device, map->agent.port_num)) return 0; - if (map->agent.qp->qp_type == IB_QPT_SMI && !map->agent.smp_allowed) - return -EACCES; + if (map->agent.qp->qp_type == IB_QPT_SMI) { + if (!map->agent.smp_allowed) + return -EACCES; + return 0; + } return ib_security_pkey_access(map->agent.device, map->agent.port_num,