Thread (11 messages) 11 messages, 2 authors, 2018-06-13
STALE2966d
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[PATCH 8/9] netfilter: xt_connmark: fix list corruption on rmmod

From: Pablo Neira Ayuso <pablo@netfilter.org>
Date: 2018-06-13 10:57:18
Also in: netfilter-devel
Subsystem: netfilter, networking [general], the rest · Maintainers: Pablo Neira Ayuso, Florian Westphal, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds

From: Florian Westphal <fw@strlen.de>

This needs to use xt_unregister_targets, else new revision is left
on the list which then causes list to point to a target struct that has been free'd.

Fixes: 472a73e00757 ("netfilter: xt_conntrack: Support bit-shifting for CONNMARK & MARK targets.")
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
---
 net/netfilter/xt_connmark.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/netfilter/xt_connmark.c b/net/netfilter/xt_connmark.c
index 94df000abb92..29c38aa7f726 100644
--- a/net/netfilter/xt_connmark.c
+++ b/net/netfilter/xt_connmark.c
@@ -211,7 +211,7 @@ static int __init connmark_mt_init(void)
 static void __exit connmark_mt_exit(void)
 {
 	xt_unregister_match(&connmark_mt_reg);
-	xt_unregister_target(connmark_tg_reg);
+	xt_unregister_targets(connmark_tg_reg, ARRAY_SIZE(connmark_tg_reg));
 }
 
 module_init(connmark_mt_init);
-- 
2.11.0
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