percpu: fix percpu accessors to potentially !cpu_possible() cpus: x86 Percpu areas are only allocated for possible cpus. In general, you shouldn't access random cpu's percpu areas: you're corrupting memory. From: Rusty Russell Signed-off-by: Rusty Russell Signed-off-by: Mike Travis --- arch/x86/mach-voyager/voyager_smp.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- test-compile.orig/arch/x86/mach-voyager/voyager_smp.c +++ test-compile/arch/x86/mach-voyager/voyager_smp.c @@ -1223,7 +1223,7 @@ int setup_profiling_timer(unsigned int m * new values until the next timer interrupt in which they do process * accounting. */ - for (i = 0; i < NR_CPUS; ++i) + for_each_possible_cpu(i) per_cpu(prof_multiplier, i) = multiplier; return 0;