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-rw-r--r--security/keys/process_keys.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/security/keys/process_keys.c b/security/keys/process_keys.c
index 74cb79eb917e..f6940618e345 100644
--- a/security/keys/process_keys.c
+++ b/security/keys/process_keys.c
@@ -16,11 +16,12 @@
16#include <linux/keyctl.h> 16#include <linux/keyctl.h>
17#include <linux/fs.h> 17#include <linux/fs.h>
18#include <linux/err.h> 18#include <linux/err.h>
19#include <linux/mutex.h>
19#include <asm/uaccess.h> 20#include <asm/uaccess.h>
20#include "internal.h" 21#include "internal.h"
21 22
22/* session keyring create vs join semaphore */ 23/* session keyring create vs join semaphore */
23static DECLARE_MUTEX(key_session_sem); 24static DEFINE_MUTEX(key_session_mutex);
24 25
25/* the root user's tracking struct */ 26/* the root user's tracking struct */
26struct key_user root_key_user = { 27struct key_user root_key_user = {
@@ -711,7 +712,7 @@ long join_session_keyring(const char *name)
711 } 712 }
712 713
713 /* allow the user to join or create a named keyring */ 714 /* allow the user to join or create a named keyring */
714 down(&key_session_sem); 715 mutex_lock(&key_session_mutex);
715 716
716 /* look for an existing keyring of this name */ 717 /* look for an existing keyring of this name */
717 keyring = find_keyring_by_name(name, 0); 718 keyring = find_keyring_by_name(name, 0);
@@ -737,7 +738,7 @@ long join_session_keyring(const char *name)
737 key_put(keyring); 738 key_put(keyring);
738 739
739error2: 740error2:
740 up(&key_session_sem); 741 mutex_unlock(&key_session_mutex);
741error: 742error:
742 return ret; 743 return ret;
743 744