Commit 1c17e4d4 authored Jun 19, 2012 by Carsten Emde Committed by Paul E. McKenney Jul 02, 2012

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>

parent d7118175

kernel/rcutree_plugin.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -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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