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authorCarsten Emde <C.Emde@osadl.org>2012-06-19 10:43:16 +0200
committerPaul E. McKenney <paulmck@linux.vnet.ibm.com>2012-07-02 12:34:25 -0700
commit1c17e4d4437d8045a596d9f06c1558dc09e2b372 (patch)
tree3ca3d1752b954211d8f3e295d107bd0bcca65a9d /kernel
parentd7118175cce7e76b3292b60832813ef1f28b6523 (diff)
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rcu: Prevent uninitialized string in RCU CPU stall info
An uninitialized string may be displayed at the end of the rcu_preempt detected stall info such as 0: (1 GPs behind) idle=075/140000000000000/0 =8?^D=8?^D ^^^^^^^^^^ if CONFIG_RCU_FAST_NO_HZ is not defined. This trivial patch clears the string in this case. Signed-off-by: Carsten Emde <C.Emde@osadl.org> Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/rcutree_plugin.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/rcutree_plugin.h b/kernel/rcutree_plugin.h
index 4b6b17cdf66b..395cdd1e0634 100644
--- a/kernel/rcutree_plugin.h
+++ b/kernel/rcutree_plugin.h
@@ -2224,6 +2224,7 @@ static void print_cpu_stall_fast_no_hz(char *cp, int cpu)
static void print_cpu_stall_fast_no_hz(char *cp, int cpu)
{
+ *cp = '\0';
}
#endif /* #else #ifdef CONFIG_RCU_FAST_NO_HZ */
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