]> bbs.cooldavid.org Git - net-next-2.6.git/blobdiff - kernel/sys.c
kernel/sys.c: fix missing rcu protection for sys_getpriority()
[net-next-2.6.git] / kernel / sys.c
index 26a6b73a6b85bbc2a4ee1e1392d3aa86d1e9a850..18bde979f346c46a8af621b62171912a1db98f5a 100644 (file)
@@ -222,6 +222,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who)
        if (which > PRIO_USER || which < PRIO_PROCESS)
                return -EINVAL;
 
+       rcu_read_lock();
        read_lock(&tasklist_lock);
        switch (which) {
                case PRIO_PROCESS:
@@ -267,6 +268,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who)
        }
 out_unlock:
        read_unlock(&tasklist_lock);
+       rcu_read_unlock();
 
        return retval;
 }