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Commit 1c17e4d4 authored by Carsten Emde's avatar Carsten Emde Committed by Paul E. McKenney
Browse files

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: default avatarCarsten Emde <C.Emde@osadl.org>
Signed-off-by: default avatarPaul 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 */