linux-kernel - [PATCH 5.3 022/344] ipv6: fix a typo in fib6_rule

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Date:   Thu,  3 Oct 2019 17:49:47 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Eric Dumazet <edumazet@...gle.com>,
        Wei Wang <weiwan@...gle.com>,
        Jakub Kicinski <jakub.kicinski@...ronome.com>,
        Yi Ren <c4tren@...il.com>
Subject: [PATCH 5.3 022/344] ipv6: fix a typo in fib6_rule_lookup()

From: Eric Dumazet <edumazet@...gle.com>

[ Upstream commit 7b09c2d052db4b4ad0b27b97918b46a7746966fa ]

Yi Ren reported an issue discovered by syzkaller, and bisected
to the cited commit.

Many thanks to Yi, this trivial patch does not reflect the patient
work that has been done.

Fixes: d64a1f574a29 ("ipv6: honor RT6_LOOKUP_F_DST_NOREF in rule lookup logic")
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
Acked-by: Wei Wang <weiwan@...gle.com>
Bisected-and-reported-by: Yi Ren <c4tren@...il.com>
Signed-off-by: Jakub Kicinski <jakub.kicinski@...ronome.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 net/ipv6/ip6_fib.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/ipv6/ip6_fib.c
+++ b/net/ipv6/ip6_fib.c
@@ -318,7 +318,7 @@ struct dst_entry *fib6_rule_lookup(struc
 	if (rt->dst.error == -EAGAIN) {
 		ip6_rt_put_flags(rt, flags);
 		rt = net->ipv6.ip6_null_entry;
-		if (!(flags | RT6_LOOKUP_F_DST_NOREF))
+		if (!(flags & RT6_LOOKUP_F_DST_NOREF))
 			dst_hold(&rt->dst);
 	}