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netfilter: nf_tables: bump set->ndeact on set flush 

Add missing set->ndeact update on each deactivated element from the set
flush path. Otherwise, sets with fixed size break after flush since
accounting breaks.

 # nft add set x y { type ipv4_addr\; size 2\; }
 # nft add element x y { 1.1.1.1 }
 # nft add element x y { 1.1.1.2 }
 # nft flush set x y
 # nft add element x y { 1.1.1.1 }
 <cmdline>:1:1-28: Error: Could not process rule: Too many open files in system

Fixes: 8411b6442e ("netfilter: nf_tables: support for set flushing")
Reported-by: Elise Lennion <elise.lennion@gmail.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Pablo Neira Ayuso 2017-01-24 00:51:48 +01:00
parent de70185de0
commit b2c11e4b95
1 changed files with 1 additions and 0 deletions
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1
net/netfilter/nf_tables_api.c
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@ -3906,6 +3906,7 @@ static int nft_flush_set(const struct nft_ctx *ctx,
err = -ENOENT;
goto err1;
}
set->ndeact++;
nft_trans_elem_set(trans) = set;
nft_trans_elem(trans) = *elem;