[PATCH] m68knommu stack bounds checking

From: William Lee Irwin III <wli@holomorphy.com>

The stack is now shared with struct thread_info on most arches, not task_t.
This mostly affects get_wchan() and stack usage debug.

diff --git a/arch/m68knommu/kernel/process.c b/arch/m68knommu/kernel/process.c
index 835e3004822db74528ddccfceba14ba4fbffa9bb..6d9f428ef7a4efbca206ff8e08dde996aaa23e93 100644 (file)
--- a/arch/m68knommu/kernel/process.c
+++ b/arch/m68knommu/kernel/process.c
@@ -421,7 +421,7 @@ unsigned long get_wchan(struct task_struct *p)
        stack_page = (unsigned long)p;
        fp = ((struct switch_stack *)p->thread.ksp)->a6;
        do {
-               if (fp < stack_page+sizeof(struct task_struct) ||
+               if (fp < stack_page+sizeof(struct thread_info) ||
                    fp >= 8184+stack_page)
                        return 0;
                pc = ((unsigned long *)fp)[1];