Author: cognet
Date: Tue Oct 22 21:47:34 2013
New Revision: 256941
URL: http://svnweb.freebsd.org/changeset/base/256941
Log:
Try to make sure the frame is indeed in the kernel memory.
Modified:
head/sys/arm/arm/stack_machdep.c
Modified: head/sys/arm/arm/stack_machdep.c
==============================================================================
--- head/sys/arm/arm/stack_machdep.c Tue Oct 22 21:32:28 2013
(r256940)
+++ head/sys/arm/arm/stack_machdep.c Tue Oct 22 21:47:34 2013
(r256941)
@@ -43,13 +43,16 @@ __FBSDID("$FreeBSD$");
* APCS where it lays out the stack incorrectly. Because of this we disable
* this when building for ARM EABI or when building with clang.
*/
+
+extern vm_offset_t kernel_vm_end;
+
static void
stack_capture(struct stack *st, u_int32_t *frame)
{
#if !defined(__ARM_EABI__) && !defined(__clang__)
vm_offset_t callpc;
- while (INKERNEL(frame)) {
+ while (INKERNEL(frame) && (vm_offset_t)frame < kernel_vm_end) {
callpc = frame[FR_SCP];
if (stack_put(st, callpc) == -1)
break;
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