6.12-stable review patch. If anyone has any objections, please let me know. ------------------ From: Florian Westphal [ Upstream commit 4ee29181216d2acb7be210126324ec3bc0e3bd01 ] Add and use a wrapper to append trans_elem structures to the transaction log. Unlike the existing helper, pass a gfp_t to indicate if sleeping is allowed. This will be used by a followup patch to realloc nft_trans_elem structures after they gain a flexible array member to reduce number of such container structures on the transaction list. Signed-off-by: Florian Westphal Signed-off-by: Pablo Neira Ayuso Stable-dep-of: 43559058d21e ("netfilter: nf_tables: skip double clone set expressions on element insert") Signed-off-by: Sasha Levin --- net/netfilter/nf_tables_api.c | 21 ++++++++++++++++----- 1 file changed, 16 insertions(+), 5 deletions(-) diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c index b5e5eae856fe7..0e2c5052977cd 100644 --- a/net/netfilter/nf_tables_api.c +++ b/net/netfilter/nf_tables_api.c @@ -440,6 +440,17 @@ static void nft_trans_commit_list_add_tail(struct net *net, struct nft_trans *tr } } +static void nft_trans_commit_list_add_elem(struct net *net, struct nft_trans *trans, + gfp_t gfp) +{ + WARN_ON_ONCE(trans->msg_type != NFT_MSG_NEWSETELEM && + trans->msg_type != NFT_MSG_DELSETELEM); + + might_alloc(gfp); + + nft_trans_commit_list_add_tail(net, trans); +} + static int nft_trans_table_add(struct nft_ctx *ctx, int msg_type) { struct nft_trans *trans; @@ -7167,7 +7178,7 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, if (update_flags) { nft_trans_elem_priv(trans) = elem_priv; nft_trans_elem_update_flags(trans) = update_flags; - nft_trans_commit_list_add_tail(ctx->net, trans); + nft_trans_commit_list_add_elem(ctx->net, trans, GFP_KERNEL); goto err_set_size; } } @@ -7187,7 +7198,7 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set, } nft_trans_elem_priv(trans) = elem.priv; - nft_trans_commit_list_add_tail(ctx->net, trans); + nft_trans_commit_list_add_elem(ctx->net, trans, GFP_KERNEL); return set_full ? -ENFILE : 0; @@ -7406,7 +7417,7 @@ static int nft_del_setelem(struct nft_ctx *ctx, struct nft_set *set, nft_setelem_data_deactivate(ctx->net, set, elem.priv); nft_trans_elem_priv(trans) = elem.priv; - nft_trans_commit_list_add_tail(ctx->net, trans); + nft_trans_commit_list_add_elem(ctx->net, trans, GFP_KERNEL); return 0; fail_ops: @@ -7442,7 +7453,7 @@ static int nft_setelem_flush(const struct nft_ctx *ctx, nft_setelem_data_deactivate(ctx->net, set, elem_priv); nft_trans_elem_set(trans) = set; nft_trans_elem_priv(trans) = elem_priv; - nft_trans_commit_list_add_tail(ctx->net, trans); + nft_trans_commit_list_add_elem(ctx->net, trans, GFP_ATOMIC); return 0; } @@ -7459,7 +7470,7 @@ static int __nft_set_catchall_flush(const struct nft_ctx *ctx, nft_setelem_data_deactivate(ctx->net, set, elem_priv); nft_trans_elem_priv(trans) = elem_priv; - nft_trans_commit_list_add_tail(ctx->net, trans); + nft_trans_commit_list_add_elem(ctx->net, trans, GFP_KERNEL); return 0; } -- 2.53.0