4.19-stable review patch. If anyone has any objections, please let me know.
------------------
From: Florian Westphal <fw@xxxxxxxxx>
[ Upstream commit bccebf64701735533c8db37773eeacc6566cc8ec ]
We need to set the dormant flag again if we fail to register
the hooks.
During memory pressure hook registration can fail and we end up
with a table marked as active but no registered hooks.
On table/base chain deletion, nf_tables will attempt to unregister
the hook again which yields a warn splat from the nftables core.
Reported-and-tested-by: syzbot+de4025c006ec68ac56fc@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 179d9ba5559a ("netfilter: nf_tables: fix table flag updates")
Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
net/netfilter/nf_tables_api.c | 1 +
1 file changed, 1 insertion(+)
--- a/net/netfilter/nf_tables_api.c
+++ b/net/netfilter/nf_tables_api.c
@@ -925,6 +925,7 @@ static int nf_tables_updtable(struct nft
return 0;
err_register_hooks:
+ ctx->table->flags |= NFT_TABLE_F_DORMANT;
nft_trans_destroy(trans);
return ret;
}
