From: Manfred Spraul <manfred@colorfullife.com>
To: Mike Galbraith <efault@gmx.de>
Cc: Zwane Mwaikambo <zwane@arm.linux.org.uk>, linux-kernel@vger.kernel.org
Subject: Re: 2.6.0-test7 DEBUG_PAGEALLOC oops
Date: Sun, 12 Oct 2003 08:58:24 +0200 [thread overview]
Message-ID: <3F88FB90.7080801@colorfullife.com> (raw)
In-Reply-To: <5.2.1.1.2.20031012060658.01e3b840@pop.gmx.net>
[-- Attachment #1: Type: text/plain, Size: 116 bytes --]
Could you try the attached patch?
It updates the end of stack detection to handle unaligned stacks.
--
Manfred
[-- Attachment #2: patch-end-of-stack --]
[-- Type: text/plain, Size: 1625 bytes --]
// $Header$
// Kernel Version:
// VERSION = 2
// PATCHLEVEL = 6
// SUBLEVEL = 0
// EXTRAVERSION = -test7
--- 2.6/include/asm-i386/thread_info.h 2003-10-09 21:20:00.000000000 +0200
+++ build-2.6/include/asm-i386/thread_info.h 2003-10-12 08:50:12.000000000 +0200
@@ -101,6 +101,16 @@
#endif
+static inline int kstack_end(void *addr)
+{
+ unsigned long offset = (unsigned long)addr & (THREAD_SIZE-1);
+
+ /* Some APM bios versions misalign the stack */
+ if (offset == 0 || offset > (THREAD_SIZE-sizeof(void*)))
+ return 1;
+ return 0;
+}
+
/*
* thread information flags
* - these are process state flags that various assembly files may need to access
--- 2.6/mm/slab.c 2003-10-09 21:23:19.000000000 +0200
+++ build-2.6/mm/slab.c 2003-10-12 08:51:13.000000000 +0200
@@ -862,7 +862,7 @@
unsigned long *sptr = &caller;
unsigned long svalue;
- while (((long) sptr & (THREAD_SIZE-1)) != 0) {
+ while (!kstack_end(sptr)) {
svalue = *sptr++;
if (kernel_text_address(svalue)) {
*addr++=svalue;
--- 2.6/arch/i386/kernel/traps.c 2003-10-09 21:23:03.000000000 +0200
+++ build-2.6/arch/i386/kernel/traps.c 2003-10-12 08:50:41.000000000 +0200
@@ -104,7 +104,7 @@
#ifdef CONFIG_KALLSYMS
printk("\n");
#endif
- while (((long) stack & (THREAD_SIZE-1)) != 0) {
+ while (!kstack_end(stack)) {
addr = *stack++;
if (kernel_text_address(addr)) {
printk(" [<%08lx>] ", addr);
@@ -138,7 +138,7 @@
stack = esp;
for(i = 0; i < kstack_depth_to_print; i++) {
- if (((long) stack & (THREAD_SIZE-1)) == 0)
+ if (kstack_end(stack))
break;
if (i && ((i % 8) == 0))
printk("\n ");
next prev parent reply other threads:[~2003-10-12 6:58 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-10-11 9:37 Manfred Spraul
2003-10-11 11:15 ` Mike Galbraith
2003-10-11 12:06 ` Manfred Spraul
2003-10-11 15:52 ` Mike Galbraith
2003-10-11 17:34 ` Manfred Spraul
2003-10-12 5:11 ` Mike Galbraith
2003-10-12 6:58 ` Manfred Spraul [this message]
2003-10-12 8:52 ` Mike Galbraith
2003-10-12 12:08 ` Thomas Molina
2003-10-12 14:13 ` Thomas Molina
2003-10-12 22:36 ` Thomas Molina
-- strict thread matches above, loose matches on Subject: below --
2003-10-09 13:04 2.6.0-test7 oops in proc_pid_stat Olaf Hering
2003-10-09 22:04 ` Linus Torvalds
2003-10-10 6:50 ` 2.6.0-test7 DEBUG_PAGEALLOC oops Mike Galbraith
2003-10-10 16:52 ` Zwane Mwaikambo
2003-10-11 7:01 ` Mike Galbraith
2003-10-11 7:03 ` Zwane Mwaikambo
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