netfilter: nf_conncount: update last_gc only when GC has been performed

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[ Upstream commit 7811ba4524 ]

Currently last_gc is being updated everytime a new connection is
tracked, that means that it is updated even if a GC wasn't performed.
With a sufficiently high packet rate, it is possible to always bypass
the GC, causing the list to grow infinitely.

Update the last_gc value only when a GC has been actually performed.

Fixes: d265929930 ("netfilter: nf_conncount: reduce unnecessary GC")
Signed-off-by: Fernando Fernandez Mancera <fmancera@suse.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Fernando Fernandez Mancera 2025-12-17 15:46:40 +01:00 • committed by Greg Kroah-Hartman

parent 92d17b9747

commit c4cde57c8a

1 changed files with 1 additions and 1 deletions

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net/netfilter/nf_conncount.c

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