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Date: Thu, 24 Mar 2022 15:19:19 +0100
From: Pablo Neira Ayuso <pablo@...filter.org>
To: Vasily Averin <vasily.averin@...ux.dev>
Cc: Florian Westphal <fw@...len.de>,
Jozsef Kadlecsik <kadlec@...filter.org>,
linux-kernel@...r.kernel.org, netfilter-devel@...r.kernel.org,
kernel@...nvz.org
Subject: Re: [PATCH v2] memcg: enable accounting for nft objects
Hm. Patch does not apply for some reason. git am complains. And
manually applying this also fails.
patch -p1 < vasily.averin.txt
patching file net/netfilter/core.c
Hunk #1 FAILED at 58.
1 out of 1 hunk FAILED -- saving rejects to file net/netfilter/core.c.rej
patching file net/netfilter/nf_tables_api.c
Hunk #1 FAILED at 1113.
Hunk #2 FAILED at 1803.
Hunk #3 FAILED at 2026.
Hunk #4 FAILED at 2126.
Hunk #5 FAILED at 2156.
Hunk #6 FAILED at 2169.
Hunk #7 FAILED at 2177.
Hunk #8 FAILED at 2186.
Hunk #9 FAILED at 2349.
Hunk #10 FAILED at 2797.
Hunk #11 FAILED at 3405.
Hunk #12 FAILED at 3818.
Hunk #13 FAILED at 4382.
Hunk #14 FAILED at 5921.
Hunk #15 FAILED at 6165.
Hunk #16 FAILED at 6477.
Hunk #17 FAILED at 6643.
Hunk #18 FAILED at 7404.
Hunk #19 FAILED at 7412.
19 out of 19 hunks FAILED -- saving rejects to file net/netfilter/nf_tables_api.c.rej
On Mon, Mar 21, 2022 at 08:02:22AM +0300, Vasily Averin wrote:
> nftables replaces iptables, but it lacks memcg accounting.
>
> This patch account most of the memory allocation associated with nft
> and should protect the host from misusing nft inside a memcg restricted
> container.
>
> Signed-off-by: Vasily Averin <vvs@...nvz.org>
> ---
> net/netfilter/core.c | 2 +-
> net/netfilter/nf_tables_api.c | 44 +++++++++++++++++------------------
> 2 files changed, 23 insertions(+), 23 deletions(-)
>
> diff --git a/net/netfilter/core.c b/net/netfilter/core.c
> index 8a77a3fd69bc..77ae3e8d344c 100644
> --- a/net/netfilter/core.c
> +++ b/net/netfilter/core.c
> @@ -58,7 +58,7 @@ static struct nf_hook_entries *allocate_hook_entries_size(u16 num)
> if (num == 0)
> return NULL;
> - e = kvzalloc(alloc, GFP_KERNEL);
> + e = kvzalloc(alloc, GFP_KERNEL_ACCOUNT);
> if (e)
> e->num_hook_entries = num;
> return e;
> diff --git a/net/netfilter/nf_tables_api.c b/net/netfilter/nf_tables_api.c
> index d71a33ae39b3..04be94236a34 100644
> --- a/net/netfilter/nf_tables_api.c
> +++ b/net/netfilter/nf_tables_api.c
> @@ -1113,16 +1113,16 @@ static int nf_tables_newtable(struct sk_buff *skb, const struct nfnl_info *info,
> }
> err = -ENOMEM;
> - table = kzalloc(sizeof(*table), GFP_KERNEL);
> + table = kzalloc(sizeof(*table), GFP_KERNEL_ACCOUNT);
> if (table == NULL)
> goto err_kzalloc;
> - table->name = nla_strdup(attr, GFP_KERNEL);
> + table->name = nla_strdup(attr, GFP_KERNEL_ACCOUNT);
> if (table->name == NULL)
> goto err_strdup;
> if (nla[NFTA_TABLE_USERDATA]) {
> - table->udata = nla_memdup(nla[NFTA_TABLE_USERDATA], GFP_KERNEL);
> + table->udata = nla_memdup(nla[NFTA_TABLE_USERDATA], GFP_KERNEL_ACCOUNT);
> if (table->udata == NULL)
> goto err_table_udata;
> @@ -1803,7 +1803,7 @@ static struct nft_hook *nft_netdev_hook_alloc(struct net *net,
> struct nft_hook *hook;
> int err;
> - hook = kmalloc(sizeof(struct nft_hook), GFP_KERNEL);
> + hook = kmalloc(sizeof(struct nft_hook), GFP_KERNEL_ACCOUNT);
> if (!hook) {
> err = -ENOMEM;
> goto err_hook_alloc;
> @@ -2026,7 +2026,7 @@ static struct nft_rule_blob *nf_tables_chain_alloc_rules(unsigned int size)
> if (size > INT_MAX)
> return NULL;
> - blob = kvmalloc(size, GFP_KERNEL);
> + blob = kvmalloc(size, GFP_KERNEL_ACCOUNT);
> if (!blob)
> return NULL;
> @@ -2126,7 +2126,7 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
> if (err < 0)
> return err;
> - basechain = kzalloc(sizeof(*basechain), GFP_KERNEL);
> + basechain = kzalloc(sizeof(*basechain), GFP_KERNEL_ACCOUNT);
> if (basechain == NULL) {
> nft_chain_release_hook(&hook);
> return -ENOMEM;
> @@ -2156,7 +2156,7 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
> if (flags & NFT_CHAIN_HW_OFFLOAD)
> return -EOPNOTSUPP;
> - chain = kzalloc(sizeof(*chain), GFP_KERNEL);
> + chain = kzalloc(sizeof(*chain), GFP_KERNEL_ACCOUNT);
> if (chain == NULL)
> return -ENOMEM;
> @@ -2169,7 +2169,7 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
> chain->table = table;
> if (nla[NFTA_CHAIN_NAME]) {
> - chain->name = nla_strdup(nla[NFTA_CHAIN_NAME], GFP_KERNEL);
> + chain->name = nla_strdup(nla[NFTA_CHAIN_NAME], GFP_KERNEL_ACCOUNT);
> } else {
> if (!(flags & NFT_CHAIN_BINDING)) {
> err = -EINVAL;
> @@ -2177,7 +2177,7 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
> }
> snprintf(name, sizeof(name), "__chain%llu", ++chain_id);
> - chain->name = kstrdup(name, GFP_KERNEL);
> + chain->name = kstrdup(name, GFP_KERNEL_ACCOUNT);
> }
> if (!chain->name) {
> @@ -2186,7 +2186,7 @@ static int nf_tables_addchain(struct nft_ctx *ctx, u8 family, u8 genmask,
> }
> if (nla[NFTA_CHAIN_USERDATA]) {
> - chain->udata = nla_memdup(nla[NFTA_CHAIN_USERDATA], GFP_KERNEL);
> + chain->udata = nla_memdup(nla[NFTA_CHAIN_USERDATA], GFP_KERNEL_ACCOUNT);
> if (chain->udata == NULL) {
> err = -ENOMEM;
> goto err_destroy_chain;
> @@ -2349,7 +2349,7 @@ static int nf_tables_updchain(struct nft_ctx *ctx, u8 genmask, u8 policy,
> char *name;
> err = -ENOMEM;
> - name = nla_strdup(nla[NFTA_CHAIN_NAME], GFP_KERNEL);
> + name = nla_strdup(nla[NFTA_CHAIN_NAME], GFP_KERNEL_ACCOUNT);
> if (!name)
> goto err;
> @@ -2797,7 +2797,7 @@ static struct nft_expr *nft_expr_init(const struct nft_ctx *ctx,
> goto err1;
> err = -ENOMEM;
> - expr = kzalloc(expr_info.ops->size, GFP_KERNEL);
> + expr = kzalloc(expr_info.ops->size, GFP_KERNEL_ACCOUNT);
> if (expr == NULL)
> goto err2;
> @@ -3405,7 +3405,7 @@ static int nf_tables_newrule(struct sk_buff *skb, const struct nfnl_info *info,
> }
> err = -ENOMEM;
> - rule = kzalloc(sizeof(*rule) + size + usize, GFP_KERNEL);
> + rule = kzalloc(sizeof(*rule) + size + usize, GFP_KERNEL_ACCOUNT);
> if (rule == NULL)
> goto err_release_expr;
> @@ -3818,7 +3818,7 @@ static int nf_tables_set_alloc_name(struct nft_ctx *ctx, struct nft_set *set,
> free_page((unsigned long)inuse);
> }
> - set->name = kasprintf(GFP_KERNEL, name, min + n);
> + set->name = kasprintf(GFP_KERNEL_ACCOUNT, name, min + n);
> if (!set->name)
> return -ENOMEM;
> @@ -4382,11 +4382,11 @@ static int nf_tables_newset(struct sk_buff *skb, const struct nfnl_info *info,
> alloc_size = sizeof(*set) + size + udlen;
> if (alloc_size < size || alloc_size > INT_MAX)
> return -ENOMEM;
> - set = kvzalloc(alloc_size, GFP_KERNEL);
> + set = kvzalloc(alloc_size, GFP_KERNEL_ACCOUNT);
> if (!set)
> return -ENOMEM;
> - name = nla_strdup(nla[NFTA_SET_NAME], GFP_KERNEL);
> + name = nla_strdup(nla[NFTA_SET_NAME], GFP_KERNEL_ACCOUNT);
> if (!name) {
> err = -ENOMEM;
> goto err_set_name;
> @@ -5921,7 +5921,7 @@ static int nft_add_set_elem(struct nft_ctx *ctx, struct nft_set *set,
> err = -ENOMEM;
> elem.priv = nft_set_elem_init(set, &tmpl, elem.key.val.data,
> elem.key_end.val.data, elem.data.val.data,
> - timeout, expiration, GFP_KERNEL);
> + timeout, expiration, GFP_KERNEL_ACCOUNT);
> if (elem.priv == NULL)
> goto err_parse_data;
> @@ -6165,7 +6165,7 @@ static int nft_del_setelem(struct nft_ctx *ctx, struct nft_set *set,
> err = -ENOMEM;
> elem.priv = nft_set_elem_init(set, &tmpl, elem.key.val.data,
> elem.key_end.val.data, NULL, 0, 0,
> - GFP_KERNEL);
> + GFP_KERNEL_ACCOUNT);
> if (elem.priv == NULL)
> goto fail_elem;
> @@ -6477,7 +6477,7 @@ static struct nft_object *nft_obj_init(const struct nft_ctx *ctx,
> }
> err = -ENOMEM;
> - obj = kzalloc(sizeof(*obj) + ops->size, GFP_KERNEL);
> + obj = kzalloc(sizeof(*obj) + ops->size, GFP_KERNEL_ACCOUNT);
> if (!obj)
> goto err2;
> @@ -6643,7 +6643,7 @@ static int nf_tables_newobj(struct sk_buff *skb, const struct nfnl_info *info,
> obj->key.table = table;
> obj->handle = nf_tables_alloc_handle(table);
> - obj->key.name = nla_strdup(nla[NFTA_OBJ_NAME], GFP_KERNEL);
> + obj->key.name = nla_strdup(nla[NFTA_OBJ_NAME], GFP_KERNEL_ACCOUNT);
> if (!obj->key.name) {
> err = -ENOMEM;
> goto err_strdup;
> @@ -7404,7 +7404,7 @@ static int nf_tables_newflowtable(struct sk_buff *skb,
> nft_ctx_init(&ctx, net, skb, info->nlh, family, table, NULL, nla);
> - flowtable = kzalloc(sizeof(*flowtable), GFP_KERNEL);
> + flowtable = kzalloc(sizeof(*flowtable), GFP_KERNEL_ACCOUNT);
> if (!flowtable)
> return -ENOMEM;
> @@ -7412,7 +7412,7 @@ static int nf_tables_newflowtable(struct sk_buff *skb,
> flowtable->handle = nf_tables_alloc_handle(table);
> INIT_LIST_HEAD(&flowtable->hook_list);
> - flowtable->name = nla_strdup(nla[NFTA_FLOWTABLE_NAME], GFP_KERNEL);
> + flowtable->name = nla_strdup(nla[NFTA_FLOWTABLE_NAME], GFP_KERNEL_ACCOUNT);
> if (!flowtable->name) {
> err = -ENOMEM;
> goto err1;
> --
> 2.25.1
>
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