Hi Pablo,
Please apply the next patch which fixes the region locking in the hash
type of sets.
Region locking was introduced to break up operation on the whole hashes
into smaller parts in order to avoid to keep the locking too long
continuously. That required three macros: two to calculate the start and
end buckets belonging to a region lock and a third one to give back the
region lock of a given hash bucket. The third one was incorrect which can
lead to a race condition between the internal garbage collector and adding
new entries to the hash simultaneously.
The bug affects all hash types, since the region locking was introduced and
it was reported by Kota Toda <kota.toda@xxxxxxxxxxxxxxxxxxxxx>.
Best regards,
Jozsef
The following changes since commit 3e52667a9c328b3d1a1ddbbb6b8fbf63a217bda3:
Merge branch 'lan78xx-phylink-prep' (2025-05-07 12:57:06 +0100)
are available in the Git repository at:
git://blackhole.kfki.hu/nf-next e2b52b09f1166fce2
for you to fetch changes up to e2b52b09f1166fce29f4888ad9b86a7cfec7ad8a:
netfilter: ipset: fix region locking in hash types (2025-05-07 16:48:30 +0200)
----------------------------------------------------------------
Jozsef Kadlecsik (1):
netfilter: ipset: fix region locking in hash types
net/netfilter/ipset/ip_set_hash_gen.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
