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-rw-r--r--arch/arm/kernel/traps.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/arm/kernel/traps.c b/arch/arm/kernel/traps.c
index 46e2c8315a3..13f8f1860f7 100644
--- a/arch/arm/kernel/traps.c
+++ b/arch/arm/kernel/traps.c
@@ -68,7 +68,8 @@ void dump_backtrace_entry(unsigned long where, unsigned long from, unsigned long
*/
static int verify_stack(unsigned long sp)
{
- if (sp < PAGE_OFFSET || (sp > (unsigned long)high_memory && high_memory != 0))
+ if (sp < PAGE_OFFSET ||
+ (sp > (unsigned long)high_memory && high_memory != NULL))
return -EFAULT;
return 0;