Drop bad pte debug patches
Dave says there's changes upstream from Tejun that reworked the code so it is all using common code now.
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@ -1,71 +0,0 @@
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Occasionally we see reports of page table corruption, and it's not clear why.
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By printing out the hardware name, we could potentially see some patterns.
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Signed-off-by: Dave Jones <davej@redhat.com>
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--- linux.orig/include/asm-generic/bug.h
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+++ linux/include/asm-generic/bug.h
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@@ -55,6 +55,8 @@ struct bug_entry {
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#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while(0)
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#endif
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+void print_hardware_dmi_name(void);
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+
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/*
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* WARN(), WARN_ON(), WARN_ON_ONCE, and so on can be used to report
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* significant issues that need prompt attention if they should ever
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--- linux.orig/kernel/panic.c
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+++ linux/kernel/panic.c
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@@ -391,6 +391,15 @@ void oops_exit(void)
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kmsg_dump(KMSG_DUMP_OOPS);
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}
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+void print_hardware_dmi_name(void)
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+{
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+ const char *board;
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+
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+ board = dmi_get_system_info(DMI_PRODUCT_NAME);
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+ if (board)
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+ printk(KERN_WARNING "Hardware name: %s\n", board);
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+}
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+
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#ifdef WANT_WARN_ON_SLOWPATH
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struct slowpath_args {
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const char *fmt;
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@@ -400,13 +409,10 @@ struct slowpath_args {
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static void warn_slowpath_common(const char *file, int line, void *caller,
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unsigned taint, struct slowpath_args *args)
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{
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- const char *board;
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-
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printk(KERN_WARNING "------------[ cut here ]------------\n");
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printk(KERN_WARNING "WARNING: at %s:%d %pS()\n", file, line, caller);
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- board = dmi_get_system_info(DMI_PRODUCT_NAME);
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- if (board)
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- printk(KERN_WARNING "Hardware name: %s\n", board);
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+
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+ print_hardware_dmi_name();
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if (args)
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vprintk(args->fmt, args->args);
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--- linux.orig/mm/memory.c
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+++ linux/mm/memory.c
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@@ -706,6 +706,8 @@ static void print_bad_pte(struct vm_area
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"BUG: Bad page map in process %s pte:%08llx pmd:%08llx\n",
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current->comm,
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(long long)pte_val(pte), (long long)pmd_val(*pmd));
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+ print_hardware_dmi_name();
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+
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if (page)
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dump_page(page);
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printk(KERN_ALERT
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--- linux.orig/mm/page_alloc.c
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+++ linux/mm/page_alloc.c
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@@ -321,6 +321,7 @@ static void bad_page(struct page *page)
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current->comm, page_to_pfn(page));
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dump_page(page);
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+ print_hardware_dmi_name();
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print_modules();
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dump_stack();
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out:
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@ -1,34 +0,0 @@
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From 3cd4fefa1d614debf75f059def34ac1aaaf96501 Mon Sep 17 00:00:00 2001
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From: Josh Boyer <jwboyer@redhat.com>
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Date: Tue, 30 Apr 2013 14:01:57 -0400
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Subject: [PATCH] When we encounter a bad PTE, print out what modules were
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loaded, so we can see if there is a common driver potentially at fault.
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Signed-off-by: Dave Jones <davej@redhat.com>
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---
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mm/memory.c | 2 ++
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1 file changed, 2 insertions(+)
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diff --git a/mm/memory.c b/mm/memory.c
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index 6dc1882..99564df 100644
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--- a/mm/memory.c
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+++ b/mm/memory.c
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@@ -57,6 +57,7 @@
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#include <linux/swapops.h>
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#include <linux/elf.h>
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#include <linux/gfp.h>
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+#include <linux/module.h>
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#include <linux/migrate.h>
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#include <linux/string.h>
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@@ -720,6 +721,7 @@ static void print_bad_pte(struct vm_area_struct *vma, unsigned long addr,
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if (vma->vm_file && vma->vm_file->f_op)
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printk(KERN_ALERT "vma->vm_file->f_op->mmap: %pSR\n",
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vma->vm_file->f_op->mmap);
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+ print_modules();
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dump_stack();
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add_taint(TAINT_BAD_PAGE, LOCKDEP_NOW_UNRELIABLE);
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}
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--
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1.8.1.4
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@ -627,9 +627,6 @@ Patch09: upstream-reverts.patch
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# Standalone patches
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#atch200: debug-bad-pte-dmi.patch
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Patch201: debug-bad-pte-modules.patch
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Patch390: defaults-acpi-video.patch
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Patch396: acpi-sony-nonvs-blacklist.patch
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@ -1285,9 +1282,6 @@ ApplyOptionalPatch compile-fixes.patch
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# revert patches from upstream that conflict or that we get via other means
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ApplyOptionalPatch upstream-reverts.patch -R
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#plyPatch debug-bad-pte-dmi.patch
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ApplyPatch debug-bad-pte-modules.patch
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# Architecture patches
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# x86(-64)
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