From 5a98443f87e304a1347762b95436c26ed39582f1 Mon Sep 17 00:00:00 2001
From: Avinash Jain <jainavinash@codeaurora.org>
Date: Mon, 6 Feb 2017 18:45:44 +0530
Subject: [PATCH] lrdp_v2: kernel 4.4 support for pagealloccorruptio
page structure is changed in kernel 4.4, changes made in
this file to support kernel 4.4.
Change-Id: I3235f32e632468c1dd629cad707c66eb7d9a75af
---
.../parsers/pagealloccorruption.py | 28 ++++++++++++++++---
1 file changed, 24 insertions(+), 4 deletions(-)
mode change 100755 => 100644 linux-ramdump-parser-v2/parsers/pagealloccorruption.py
diff --git a/linux-ramdump-parser-v2/parsers/pagealloccorruption.py b/linux-ramdump-parser-v2/parsers/pagealloccorruption.py
old mode 100755
new mode 100644
index 302d46d..d4174dd
--- a/linux-ramdump-parser-v2/parsers/pagealloccorruption.py
+++ b/linux-ramdump-parser-v2/parsers/pagealloccorruption.py
@@ -1,4 +1,4 @@
-# Copyright (c) 2012,2014-2015 The Linux Foundation. All rights reserved.
+# Copyright (c) 2012,2014-2017 The Linux Foundation. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 and
@@ -27,6 +27,14 @@ class PageallocCorruption(RamParser):
cnt = self.ramdump.read_word(memblock_addr + memblock_memory_offset + memblock_memory_cnt_offset)
region_offset = self.ramdump.field_offset('struct memblock_type', 'regions')
regions_baseaddr = self.ramdump.read_word(memblock_addr + memblock_memory_offset + region_offset)
+ page_ext_offset = self.ramdump.field_offset(
+ 'struct mem_section', 'page_ext')
+ page_flags_offset = self.ramdump.field_offset(
+ 'struct page_ext', 'flags')
+ mem_section_size = self.ramdump.sizeof("struct mem_section")
+ mem_section = self.ramdump.read_word('mem_section')
+ page_ext_size = self.ramdump.sizeof("struct page_ext")
+
for r in range(0,cnt) :
region_addr = regions_baseaddr + r * self.ramdump.sizeof('struct memblock_region')
start_addr_offset = self.ramdump.field_offset('struct memblock_region', 'base')
@@ -41,11 +49,23 @@ class PageallocCorruption(RamParser):
for pfn in range(min_pfn, max_pfn):
page = pfn_to_page(self.ramdump, pfn)
page_pa = (pfn << 12)
- # debug_flags value should be 1 for pages having poisoned value 0xaa
- free = get_debug_flags(self.ramdump, page)
+ if (self.ramdump.kernel_version > (3, 18, 0)):
+ free = 0
+ offset = page_pa >> 30
+ mem_section_0_offset = (
+ mem_section + (offset * mem_section_size))
+ page_ext = self.ramdump.read_word(
+ mem_section_0_offset + page_ext_offset)
+ temp_page_ext = page_ext + (pfn * page_ext_size)
+ page_ext_flags = self.ramdump.read_word(
+ temp_page_ext + page_flags_offset)
+ # enum PAGE_EXT_DEBUG_POISON ( == 0th bit is set ) for page poisioning
+ free = page_ext_flags & 1
+ else:
+ # debug_flags value should be 1 for pages having poisoned value 0xaa
+ free = get_debug_flags(self.ramdump, page)
if free == 1:
- page_pa = (pfn << 12)
flag = 0;
for i in range(0,1024):
readval = self.ramdump.read_u32(page_pa+i*4, False)
--
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