Release 4.12 lib/list_debug.c
/*
* Copyright 2006, Red Hat, Inc., Dave Jones
* Released under the General Public License (GPL).
*
* This file contains the linked list validation for DEBUG_LIST.
*/
#include <linux/export.h>
#include <linux/list.h>
#include <linux/bug.h>
#include <linux/kernel.h>
#include <linux/rculist.h>
/*
* Check that the data structures for the list manipulations are reasonably
* valid. Failures here indicate memory corruption (and possibly an exploit
* attempt).
*/
bool __list_add_valid(struct list_head *new, struct list_head *prev,
struct list_head *next)
{
if (CHECK_DATA_CORRUPTION(next->prev != prev,
"list_add corruption. next->prev should be prev (%p), but was %p. (next=%p).\n",
prev, next->prev, next) ||
CHECK_DATA_CORRUPTION(prev->next != next,
"list_add corruption. prev->next should be next (%p), but was %p. (prev=%p).\n",
next, prev->next, prev) ||
CHECK_DATA_CORRUPTION(new == prev || new == next,
"list_add double add: new=%p, prev=%p, next=%p.\n",
new, prev, next))
return false;
return true;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Jones | 50 | 58.82% | 3 | 42.86% |
Kees Cook | 18 | 21.18% | 3 | 42.86% |
Chris Metcalf | 17 | 20.00% | 1 | 14.29% |
Total | 85 | 100.00% | 7 | 100.00% |
EXPORT_SYMBOL(__list_add_valid);
bool __list_del_entry_valid(struct list_head *entry)
{
struct list_head *prev, *next;
prev = entry->prev;
next = entry->next;
if (CHECK_DATA_CORRUPTION(next == LIST_POISON1,
"list_del corruption, %p->next is LIST_POISON1 (%p)\n",
entry, LIST_POISON1) ||
CHECK_DATA_CORRUPTION(prev == LIST_POISON2,
"list_del corruption, %p->prev is LIST_POISON2 (%p)\n",
entry, LIST_POISON2) ||
CHECK_DATA_CORRUPTION(prev->next != entry,
"list_del corruption. prev->next should be %p, but was %p\n",
entry, prev->next) ||
CHECK_DATA_CORRUPTION(next->prev != entry,
"list_del corruption. next->prev should be %p, but was %p\n",
entry, next->prev))
return false;
return true;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Jones | 37 | 37.76% | 2 | 28.57% |
Linus Torvalds | 25 | 25.51% | 1 | 14.29% |
Kees Cook | 20 | 20.41% | 3 | 42.86% |
Baruch Siach | 16 | 16.33% | 1 | 14.29% |
Total | 98 | 100.00% | 7 | 100.00% |
EXPORT_SYMBOL(__list_del_entry_valid);
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Dave Jones | 103 | 49.05% | 4 | 28.57% |
Kees Cook | 42 | 20.00% | 4 | 28.57% |
Linus Torvalds | 25 | 11.90% | 1 | 7.14% |
Chris Metcalf | 17 | 8.10% | 1 | 7.14% |
Baruch Siach | 16 | 7.62% | 1 | 7.14% |
Paul Gortmaker | 7 | 3.33% | 3 | 21.43% |
Total | 210 | 100.00% | 14 | 100.00% |
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