Marcin Niestroj 6521b9e4fa net: tcp: Fix net_buf leak in case of low available net_buf count ... This net_buf leak happends when we are low on available net_buf count. During TCP segment preparation we do allocate IP header successfully, but we fail to allocate TCP header. In such case pkt->frags is not NULL anymore (it contains IP header), but we override it during TCP header allocation error path. This results in net_buf containing IP header to never be deallocated, because it does not belong to any net_pkt anymore. Use net_pkt_frag_add() function to add tail for future net_pkt deallocation, instead of assigning tail to pkt->frags pointer. Fixes: c6407659f3 ("net: tcp: Add the frag back to caller allocated net_pkt") Signed-off-by: Marcin Niestroj <m.niestroj@grinn-global.com>		2018-08-10 13:38:08 +03:00
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