Thanks for the quick fix! I tested the patch and it works perfectly.

I also included stable in Cc.

Tested-by: Sami Farin hvtaifwkbgefbaei@gmail.com

On Wed, Sep 05, 2018 at 11:41:31 -0700, Cong Wang wrote:

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@gmail.com Cc: Christoph Hellwig hch@lst.de Cc: Pablo Neira Ayuso pablo@netfilter.org Signed-off-by: Cong Wang xiyou.wangcong@gmail.com

---

net/netfilter/xt_hashlimit.c | 18 +++++++++--------- 1 file changed, 9 insertions(+), 9 deletions(-)

diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c index 9b16402f29af..3e7d259e5d8d 100644 --- a/net/netfilter/xt_hashlimit.c +++ b/net/netfilter/xt_hashlimit.c @@ -1057,7 +1057,7 @@ static struct xt_match hashlimit_mt_reg[] __read_mostly = { 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_file *s, loff_t *pos) 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 *s, void *v, loff_t *pos) 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_ent *ent, u_int8_t family, 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 dsthash_ent *ent, u_int8_t family, 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 dsthash_ent *ent, u_int8_t family, 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 dsthash_ent *ent, u_int8_t family, 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_file *s, void *v) 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_file *s, void *v) 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;

2.14.4