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netlabel: Compiler warning and NULL pointer dereference fix 

Fix the two compiler warnings show below.  Thanks to Geert Uytterhoeven for
finding and reporting the problem.

 net/netlabel/netlabel_unlabeled.c:567: warning: 'entry' may be used
   uninitialized in this function
 net/netlabel/netlabel_unlabeled.c:629: warning: 'entry' may be used
   uninitialized in this function

Signed-off-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Paul Moore 2008-12-11 21:31:50 -08:00 коммит произвёл David S. Miller
Родитель 30bb0e0dce
Коммит ec8f2375d7
1 изменённых файлов: 20 добавлений и 18 удалений
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38
net/netlabel/netlabel_unlabeled.c
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@ -562,7 +562,6 @@ static int netlbl_unlhsh_remove_addr4(struct net *net,
const struct in_addr *mask,
struct netlbl_audit *audit_info)
{
int ret_val = 0;
struct netlbl_af4list *list_entry;
struct netlbl_unlhsh_addr4 *entry;
struct audit_buffer *audit_buf;
@ -577,7 +576,7 @@ static int netlbl_unlhsh_remove_addr4(struct net *net,
if (list_entry != NULL)
entry = netlbl_unlhsh_addr4_entry(list_entry);
else
ret_val = -ENOENT;
entry = NULL;
audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_STCDEL,
audit_info);
@ -588,19 +587,21 @@ static int netlbl_unlhsh_remove_addr4(struct net *net,
addr->s_addr, mask->s_addr);
if (dev != NULL)
dev_put(dev);
if (entry && security_secid_to_secctx(entry->secid,
&secctx,
&secctx_len) == 0) {
if (entry != NULL &&
security_secid_to_secctx(entry->secid,
&secctx, &secctx_len) == 0) {
audit_log_format(audit_buf, " sec_obj=%s", secctx);
security_release_secctx(secctx, secctx_len);
}
audit_log_format(audit_buf, " res=%u", ret_val == 0 ? 1 : 0);
audit_log_format(audit_buf, " res=%u", entry != NULL ? 1 : 0);
audit_log_end(audit_buf);
}
if (ret_val == 0)
call_rcu(&entry->rcu, netlbl_unlhsh_free_addr4);
return ret_val;
if (entry == NULL)
return -ENOENT;
call_rcu(&entry->rcu, netlbl_unlhsh_free_addr4);
return 0;
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
@ -624,7 +625,6 @@ static int netlbl_unlhsh_remove_addr6(struct net *net,
const struct in6_addr *mask,
struct netlbl_audit *audit_info)
{
int ret_val = 0;
struct netlbl_af6list *list_entry;
struct netlbl_unlhsh_addr6 *entry;
struct audit_buffer *audit_buf;
@ -638,7 +638,7 @@ static int netlbl_unlhsh_remove_addr6(struct net *net,
if (list_entry != NULL)
entry = netlbl_unlhsh_addr6_entry(list_entry);
else
ret_val = -ENOENT;
entry = NULL;
audit_buf = netlbl_audit_start_common(AUDIT_MAC_UNLBL_STCDEL,
audit_info);
@ -649,19 +649,21 @@ static int netlbl_unlhsh_remove_addr6(struct net *net,
addr, mask);
if (dev != NULL)
dev_put(dev);
if (entry && security_secid_to_secctx(entry->secid,
&secctx,
&secctx_len) == 0) {
if (entry != NULL &&
security_secid_to_secctx(entry->secid,
&secctx, &secctx_len) == 0) {
audit_log_format(audit_buf, " sec_obj=%s", secctx);
security_release_secctx(secctx, secctx_len);
}
audit_log_format(audit_buf, " res=%u", ret_val == 0 ? 1 : 0);
audit_log_format(audit_buf, " res=%u", entry != NULL ? 1 : 0);
audit_log_end(audit_buf);
}
if (ret_val == 0)
call_rcu(&entry->rcu, netlbl_unlhsh_free_addr6);
return ret_val;
if (entry == NULL)
return -ENOENT;
call_rcu(&entry->rcu, netlbl_unlhsh_free_addr6);
return 0;
}
#endif /* IPv6 */