From cb11cb5896122f5ba0ab85886aae99ccca9d641a Mon Sep 17 00:00:00 2001 From: Keir Fraser Date: Wed, 19 May 2010 18:38:19 +0100 Subject: [PATCH] kexec: Fix dodgy use of cpu_present_map protecting percpu data access. Signed-off-by: Keir Fraser --- xen/common/kexec.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/xen/common/kexec.c b/xen/common/kexec.c index e4dc1f0390..263faebcf5 100644 --- a/xen/common/kexec.c +++ b/xen/common/kexec.c @@ -271,7 +271,7 @@ static int kexec_get_cpu(xen_kexec_range_t *range) int nr = range->nr; int nr_bytes = 0; - if ( nr < 0 || nr >= num_present_cpus() ) + if ( nr < 0 || nr >= NR_CPUS || !cpu_online(nr) ) return -EINVAL; nr_bytes += sizeof_note("CORE", sizeof(ELF_Prstatus)); -- 2.30.2