Patch "llc: Don't drop packet from non-root netns." has been added to the 6.1-stable tree

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This is a note to let you know that I've just added the patch titled

    llc: Don't drop packet from non-root netns.

to the 6.1-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     llc-don-t-drop-packet-from-non-root-netns.patch
and it can be found in the queue-6.1 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.



commit e9fa3eef2ea63154cf4655e320d9deee9b91fb21
Author: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
Date:   Tue Jul 18 10:41:51 2023 -0700

    llc: Don't drop packet from non-root netns.
    
    [ Upstream commit 6631463b6e6673916d2481f692938f393148aa82 ]
    
    Now these upper layer protocol handlers can be called from llc_rcv()
    as sap->rcv_func(), which is registered by llc_sap_open().
    
      * function which is passed to register_8022_client()
        -> no in-kernel user calls register_8022_client().
    
      * snap_rcv()
        `- proto->rcvfunc() : registered by register_snap_client()
           -> aarp_rcv() and atalk_rcv() drop packets from non-root netns
    
      * stp_pdu_rcv()
        `- garp_protos[]->rcv() : registered by stp_proto_register()
           -> garp_pdu_rcv() and br_stp_rcv() are netns-aware
    
    So, we can safely remove the netns restriction in llc_rcv().
    
    Fixes: e730c15519d0 ("[NET]: Make packet reception network namespace safe")
    Signed-off-by: Kuniyuki Iwashima <kuniyu@xxxxxxxxxx>
    Signed-off-by: Paolo Abeni <pabeni@xxxxxxxxxx>
    Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>

diff --git a/net/llc/llc_input.c b/net/llc/llc_input.c
index c309b72a58779..7cac441862e21 100644
--- a/net/llc/llc_input.c
+++ b/net/llc/llc_input.c
@@ -163,9 +163,6 @@ int llc_rcv(struct sk_buff *skb, struct net_device *dev,
 	void (*sta_handler)(struct sk_buff *skb);
 	void (*sap_handler)(struct llc_sap *sap, struct sk_buff *skb);
 
-	if (!net_eq(dev_net(dev), &init_net))
-		goto drop;
-
 	/*
 	 * When the interface is in promisc. mode, drop all the crap that it
 	 * receives, do not try to analyse it.



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