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netfilter: nf_tables: fix chain filter in nf_tables_dump_rules()
[ Upstream commit24c0df82ef
] ctx->chain may be null now that we have very large object names, so we cannot check for ctx->chain[0] here. Fixes:b7263e071a
("netfilter: nf_tables: Allow table names of up to 255 chars") Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org> Acked-by: Phil Sutter <phil@nwl.cc> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -2072,7 +2072,7 @@ static int nf_tables_dump_rules(struct sk_buff *skb,
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continue;
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list_for_each_entry_rcu(chain, &table->chains, list) {
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if (ctx && ctx->chain[0] &&
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if (ctx && ctx->chain &&
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strcmp(ctx->chain, chain->name) != 0)
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continue;
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