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batman-adv: frag: fix primary_if leak on failed linearization

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If the skb has a frag_list, it must be linearized before it can be split
using skb_split(). But when this step failed, it must not only free the skb
but also take care of the reference to the already found primary_if.

Cc: stable@vger.kernel.org
Reported-by: Sashiko <sashiko-bot@kernel.org>
Fixes: a063f2fba3 ("batman-adv: Don't skb_split skbuffs with frag_list")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
This commit is contained in:
Sven Eckelmann 2026-07-03 21:04:03 +02:00
parent 6b628425ae
commit 353d2c1d54
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1 changed files with 1 additions and 1 deletions
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2
net/batman-adv/fragmentation.c
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@ -547,7 +547,7 @@ int batadv_frag_send_packet(struct sk_buff *skb,
*/
if (skb_has_frag_list(skb) && __skb_linearize(skb)) {
ret = -ENOMEM;
goto free_skb;
goto put_primary_if;
}
/* Create one header to be copied to all fragments */