[PATCH 4.18 129/168] netfilter: xt_hashlimit: use s->file instead of s->private

[Greg Kroah-Hartman]

4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Cong Wang <xiyou.wangcong@xxxxxxxxx>

[ Upstream commit 1286df269f498165061e0cf8092ca212545dbb5a ]

After switching to the new procfs API, it is supposed to
retrieve the private pointer from PDE_DATA(file_inode(s->file)),
s->private is no longer referred.

Fixes: 1cd671827290 ("netfilter/x_tables: switch to proc_create_seq_private")
Reported-by: Sami Farin <hvtaifwkbgefbaei@xxxxxxxxx>
Signed-off-by: Cong Wang <xiyou.wangcong@xxxxxxxxx>
Acked-by: Christoph Hellwig <hch@xxxxxx>
Tested-by: Sami Farin <hvtaifwkbgefbaei@xxxxxxxxx>
Signed-off-by: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/netfilter/xt_hashlimit.c |   18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -1057,7 +1057,7 @@ static struct xt_match hashlimit_mt_reg[
 static void *dl_seq_start(struct seq_file *s, loff_t *pos)
 	__acquires(htable->lock)
 {
-	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
+	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->file));
 	unsigned int *bucket;
 
 	spin_lock_bh(&htable->lock);
@@ -1074,7 +1074,7 @@ static void *dl_seq_start(struct seq_fil
 
 static void *dl_seq_next(struct seq_file *s, void *v, loff_t *pos)
 {
-	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
+	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->file));
 	unsigned int *bucket = v;
 
 	*pos = ++(*bucket);
@@ -1088,7 +1088,7 @@ static void *dl_seq_next(struct seq_file
 static void dl_seq_stop(struct seq_file *s, void *v)
 	__releases(htable->lock)
 {
-	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
+	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->file));
 	unsigned int *bucket = v;
 
 	if (!IS_ERR(bucket))
@@ -1130,7 +1130,7 @@ static void dl_seq_print(struct dsthash_
 static int dl_seq_real_show_v2(struct dsthash_ent *ent, u_int8_t family,
 			       struct seq_file *s)
 {
-	struct xt_hashlimit_htable *ht = PDE_DATA(file_inode(s->private));
+	struct xt_hashlimit_htable *ht = PDE_DATA(file_inode(s->file));
 
 	spin_lock(&ent->lock);
 	/* recalculate to show accurate numbers */
@@ -1145,7 +1145,7 @@ static int dl_seq_real_show_v2(struct ds
 static int dl_seq_real_show_v1(struct dsthash_ent *ent, u_int8_t family,
 			       struct seq_file *s)
 {
-	struct xt_hashlimit_htable *ht = PDE_DATA(file_inode(s->private));
+	struct xt_hashlimit_htable *ht = PDE_DATA(file_inode(s->file));
 
 	spin_lock(&ent->lock);
 	/* recalculate to show accurate numbers */
@@ -1160,7 +1160,7 @@ static int dl_seq_real_show_v1(struct ds
 static int dl_seq_real_show(struct dsthash_ent *ent, u_int8_t family,
 			    struct seq_file *s)
 {
-	struct xt_hashlimit_htable *ht = PDE_DATA(file_inode(s->private));
+	struct xt_hashlimit_htable *ht = PDE_DATA(file_inode(s->file));
 
 	spin_lock(&ent->lock);
 	/* recalculate to show accurate numbers */
@@ -1174,7 +1174,7 @@ static int dl_seq_real_show(struct dstha
 
 static int dl_seq_show_v2(struct seq_file *s, void *v)
 {
-	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
+	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->file));
 	unsigned int *bucket = (unsigned int *)v;
 	struct dsthash_ent *ent;
 
@@ -1188,7 +1188,7 @@ static int dl_seq_show_v2(struct seq_fil
 
 static int dl_seq_show_v1(struct seq_file *s, void *v)
 {
-	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
+	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->file));
 	unsigned int *bucket = v;
 	struct dsthash_ent *ent;
 
@@ -1202,7 +1202,7 @@ static int dl_seq_show_v1(struct seq_fil
 
 static int dl_seq_show(struct seq_file *s, void *v)
 {
-	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->private));
+	struct xt_hashlimit_htable *htable = PDE_DATA(file_inode(s->file));
 	unsigned int *bucket = v;
 	struct dsthash_ent *ent;