net: filter: fix possible memory leak in __sk_prepare_filter()
__sk_prepare_filter() was reworked in commit bd4cf0ed (net: filter: rework/optimize internal BPF interpreter's instruction set) so that it should have uncharged memory once things went wrong. However that work isn't complete. Error is handled only in __sk_migrate_filter() while memory can still leak in the error path right after sk_chk_filter(). Fixes: bd4cf0ed ("net: filter: rework/optimize internal BPF interpreter's instruction set") Signed-off-by: NLeon Yu <chianglungyu@gmail.com> Acked-by: NAlexei Starovoitov <ast@plumgrid.com> Tested-by: NAlexei Starovoitov <ast@plumgrid.com> Signed-off-by: NDavid S. Miller <davem@davemloft.net>
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