netfilter: ipset: let destroy callbacks adjust ext mem size

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For bitmap this change makes no difference, because destructors are
called synchronously.

List type however calls them via call_rcu() so accounting decrement can
happen after list_set_flush() set ext_size to 0.

'set->elements = 0' can be removed for the same reason in the list type
case, it calls 'set->elements--' for each element.

Fixes: 9e41f26a50 ("netfilter: ipset: Count non-static extension memory for userspace")
Suggested-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Florian Westphal <fw@strlen.de>
Acked-by: Jozsef Kadlecsik <kadlec@netfilter.org>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

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This commit is contained in:

Florian Westphal 2026-08-06 16:17:50 +02:00 • committed by Pablo Neira Ayuso

parent 4cbd69766b

commit 490937b88c

2 changed files with 2 additions and 3 deletions

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2

net/netfilter/ipset/ip_set_bitmap_gen.h

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3

net/netfilter/ipset/ip_set_list_set.c

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