diff options
Diffstat (limited to 'net/netfilter/x_tables.c')
| -rw-r--r-- | net/netfilter/x_tables.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index 686c7715d77..227aa11e840 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -2,6 +2,7 @@ * x_tables core - Backend for {ip,ip6,arp}_tables * * Copyright (C) 2006-2006 Harald Welte <laforge@netfilter.org> + * Copyright (C) 2006-2012 Patrick McHardy <kaber@trash.net> * * Based on existing ip_tables code which is * Copyright (C) 1999 Paul `Rusty' Russell & Michael J. Neuling @@ -844,8 +845,13 @@ xt_replace_table(struct xt_table *table, return NULL; } - table->private = newinfo; newinfo->initial_entries = private->initial_entries; + /* + * Ensure contents of newinfo are visible before assigning to + * private. + */ + smp_wmb(); + table->private = newinfo; /* * Even though table entries have now been swapped, other CPU's @@ -999,7 +1005,7 @@ static int xt_table_open(struct inode *inode, struct file *file) sizeof(struct xt_names_priv)); if (!ret) { priv = ((struct seq_file *)file->private_data)->private; - priv->af = (unsigned long)PDE(inode)->data; + priv->af = (unsigned long)PDE_DATA(inode); } return ret; } @@ -1147,7 +1153,7 @@ static int xt_match_open(struct inode *inode, struct file *file) seq = file->private_data; seq->private = trav; - trav->nfproto = (unsigned long)PDE(inode)->data; + trav->nfproto = (unsigned long)PDE_DATA(inode); return 0; } @@ -1211,7 +1217,7 @@ static int xt_target_open(struct inode *inode, struct file *file) seq = file->private_data; seq->private = trav; - trav->nfproto = (unsigned long)PDE(inode)->data; + trav->nfproto = (unsigned long)PDE_DATA(inode); return 0; } |