netfilter: nf_tables: use WARN_ON_ONCE instead of BUG_ON in nft_do_chain()
commit adc972c5b8
upstream.
When depth of chain is bigger than NFT_JUMP_STACK_SIZE, the nft_do_chain
crashes. But there is no need to crash hard here.
Suggested-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Acked-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
parent
5acd64888e
commit
259cc05cce
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@ -208,7 +208,8 @@ next_rule:
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switch (regs.verdict.code) {
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switch (regs.verdict.code) {
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case NFT_JUMP:
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case NFT_JUMP:
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BUG_ON(stackptr >= NFT_JUMP_STACK_SIZE);
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if (WARN_ON_ONCE(stackptr >= NFT_JUMP_STACK_SIZE))
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return NF_DROP;
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jumpstack[stackptr].chain = chain;
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jumpstack[stackptr].chain = chain;
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jumpstack[stackptr].rule = rule;
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jumpstack[stackptr].rule = rule;
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jumpstack[stackptr].rulenum = rulenum;
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jumpstack[stackptr].rulenum = rulenum;
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