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netfilter: nft_bitwise: fix register tracking

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[ Upstream commit 14e8b293903785590a0ef168745ac84250cb1f4c ]

At the end of `nft_bitwise_reduce`, there is a loop which is intended to
update the bitwise expression associated with each tracked destination
register.  However, currently, it just updates the first register
repeatedly.  Fix it.

Fixes: 34cc9e5288 ("netfilter: nf_tables: cancel tracking for clobbered destination registers")
Signed-off-by: Jeremy Sowden <jeremy@azazel.net>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Jeremy Sowden 2023-05-25 15:07:24 +01:00 committed by Greg Kroah-Hartman
parent 81e11b6c1a
commit 1f26ea49a5
1 changed files with 1 additions and 1 deletions
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net/netfilter/nft_bitwise.c
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@ -322,7 +322,7 @@ static bool nft_bitwise_reduce(struct nft_regs_track *track,
dreg = priv->dreg;
regcount = DIV_ROUND_UP(priv->len, NFT_REG32_SIZE);
for (i = 0; i < regcount; i++, dreg++)
track->regs[priv->dreg].bitwise = expr;
track->regs[dreg].bitwise = expr;
return false;
}