Messages in this thread Patch in this message | | | From | Bastien Philbert <> | Subject | [PATCH] ipv6: icmp: Add protection from concurrent users in the function icmpv6_echo_reply | Date | Tue, 5 Apr 2016 17:27:56 -0400 |
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This adds protection from concurrenct users in the function icmpv6_echo_reply around the call to the function __in6_dev_get by locking/unlocking around this call with calls to the functions rtnl_lock and rtnl_unlock to protect against concurrent users when calling this function in icmpv6_echo_reply as stated in the comments for locking requirements for the function, __in6_dev_get.
Signed-off-by: Bastien Philbert <bastienphilbert@gmail.com> --- net/ipv6/icmp.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c index 0a37ddc..798434f 100644 --- a/net/ipv6/icmp.c +++ b/net/ipv6/icmp.c @@ -607,7 +607,9 @@ static void icmpv6_echo_reply(struct sk_buff *skb) hlimit = ip6_sk_dst_hoplimit(np, &fl6, dst); + rtnl_lock(); idev = __in6_dev_get(skb->dev); + rtnl_unlock(); msg.skb = skb; msg.offset = 0; -- 2.5.0
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