From: Chris Mi <cmi@nvidia.com>
Date: Tue, 8 Dec 2020 02:48:35 +0000 (+0800)
Subject: net: flow_offload: Fix memory leak for indirect flow block
X-Git-Tag: v5.10.7~1029^2~8
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=5137d303659d8c324e67814b1cc2e1bc0c0d9836;p=platform%2Fkernel%2Flinux-rpi.git

net: flow_offload: Fix memory leak for indirect flow block

The offending commit introduces a cleanup callback that is invoked
when the driver module is removed to clean up the tunnel device
flow block. But it returns on the first iteration of the for loop.
The remaining indirect flow blocks will never be freed.

Fixes: 1fac52da5942 ("net: flow_offload: consolidate indirect flow_block infrastructure")
CC: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Chris Mi <cmi@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
---

diff --git a/net/core/flow_offload.c b/net/core/flow_offload.c
index d4474c8..715b67f 100644
--- a/net/core/flow_offload.c
+++ b/net/core/flow_offload.c
@@ -381,10 +381,8 @@ static void __flow_block_indr_cleanup(void (*release)(void *cb_priv),
 
 	list_for_each_entry_safe(this, next, &flow_block_indr_list, indr.list) {
 		if (this->release == release &&
-		    this->indr.cb_priv == cb_priv) {
+		    this->indr.cb_priv == cb_priv)
 			list_move(&this->indr.list, cleanup_list);
-			return;
-		}
 	}
 }