diff options
| -rw-r--r-- | net/netfilter/x_tables.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/netfilter/x_tables.c b/net/netfilter/x_tables.c index 33724b08b8f0..7521e8a72c06 100644 --- a/net/netfilter/x_tables.c +++ b/net/netfilter/x_tables.c @@ -582,6 +582,8 @@ int xt_compat_add_offset(u_int8_t af, unsigned int offset, int delta) { struct xt_af *xp = &xt[af]; + WARN_ON(!mutex_is_locked(&xt[af].compat_mutex)); + if (WARN_ON(!xp->compat_tab)) return -ENOMEM; @@ -599,6 +601,8 @@ EXPORT_SYMBOL_GPL(xt_compat_add_offset); void xt_compat_flush_offsets(u_int8_t af) { + WARN_ON(!mutex_is_locked(&xt[af].compat_mutex)); + if (xt[af].compat_tab) { vfree(xt[af].compat_tab); xt[af].compat_tab = NULL; @@ -630,6 +634,8 @@ int xt_compat_init_offsets(u8 af, unsigned int number) { size_t mem; + WARN_ON(!mutex_is_locked(&xt[af].compat_mutex)); + if (!number || number > (INT_MAX / sizeof(struct compat_delta))) return -EINVAL; |