From: Andrew Morton <akpm@osdl.org>
Date: Mon, 19 Apr 2004 05:07:08 +0000 (-0700)
Subject: [PATCH] m68knommu stack bounds checking
X-Git-Tag: v2.6.6-rc2~18^2^2~4
X-Git-Url: http://git.neil.brown.name/?a=commitdiff_plain;h=34f77ac0dde78c5cdcbb4d80bd4d02e64166e907;p=history.git

[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 835e3004822d..6d9f428ef7a4 100644
--- 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];