On Tue,  6 Feb 2024 12:26:17 +0300 Dmitry Antipov wrote:

In case of GSO, 'chunk->skb' pointer may point to an entry from
fraglist created in 'sctp_packet_gso_append()'. To avoid freeing
random fraglist entry (and so undefined behavior and/or memory
leak), ensure that 'chunk->skb' is set to 'chunk->head_skb'
(i.e. fraglist head) before calling 'sctp_chunk_free()'.

The code already exists in another place in this file, let's factor it
out to a helper function.
-- 
pw-bot: cr