github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-08 06:25:52 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

netfilter: nf_tables: use WARN_ON_ONCE instead of BUG_ON in nft_do_chain()

Browse Source 
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>
This commit is contained in:
Taehee Yoo 2018-06-11 22:16:33 +09:00 committed by Greg Kroah-Hartman
parent 1e40d09a55
commit 7534651236
1 changed files with 2 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
net/netfilter/nf_tables_core.c
View File

@ -167,7 +167,8 @@ nft_do_chain(struct nft_pktinfo *pkt, void *priv)
switch (regs.verdict.code) {
case NFT_JUMP:
BUG_ON(stackptr >= NFT_JUMP_STACK_SIZE);
if (WARN_ON_ONCE(stackptr >= NFT_JUMP_STACK_SIZE))
return NF_DROP;
jumpstack[stackptr].chain = chain;
jumpstack[stackptr].rule = rule;
jumpstack[stackptr].rulenum = rulenum;