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kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK

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Convert all allocations that used a NOTRACK flag to stop using it.

Link: http://lkml.kernel.org/r/20171007030159.22241-3-alexander.levin@verizon.com
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Eric W. Biederman <ebiederm@xmission.com>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Pekka Enberg <penberg@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Tim Hansen <devtimhansen@gmail.com>
Cc: Vegard Nossum <vegardno@ifi.uio.no>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Levin, Alexander (Sasha Levin) 2017-11-15 17:35:54 -08:00 committed by Linus Torvalds
parent 4950276672
commit 75f296d93b
23 changed files with 36 additions and 48 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/arm/include/asm/pgalloc.h
View file

@ -57,7 +57,7 @@ static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd)
extern pgd_t *pgd_alloc(struct mm_struct *mm);
extern void pgd_free(struct mm_struct *mm, pgd_t *pgd);
#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
#define PGALLOC_GFP (GFP_KERNEL | __GFP_ZERO)
static inline void clean_pte_table(pte_t *pte)
{

2
arch/arm64/include/asm/pgalloc.h
View file

@ -26,7 +26,7 @@
#define check_pgt_cache() do { } while (0)
#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
#define PGALLOC_GFP (GFP_KERNEL | __GFP_ZERO)
#define PGD_SIZE (PTRS_PER_PGD * sizeof(pgd_t))
#if CONFIG_PGTABLE_LEVELS > 2

2
arch/powerpc/include/asm/pgalloc.h
View file

@ -18,7 +18,7 @@ static inline gfp_t pgtable_gfp_flags(struct mm_struct *mm, gfp_t gfp)
}
#endif /* MODULE */
#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
#define PGALLOC_GFP (GFP_KERNEL | __GFP_ZERO)
#ifdef CONFIG_PPC_BOOK3S
#include <asm/book3s/pgalloc.h>

4
arch/sh/kernel/dwarf.c
View file

@ -1172,11 +1172,11 @@ static int __init dwarf_unwinder_init(void)
dwarf_frame_cachep = kmem_cache_create("dwarf_frames",
sizeof(struct dwarf_frame), 0,
SLAB_PANIC | SLAB_HWCACHE_ALIGN | SLAB_NOTRACK, NULL);
SLAB_PANIC | SLAB_HWCACHE_ALIGN, NULL);
dwarf_reg_cachep = kmem_cache_create("dwarf_regs",
sizeof(struct dwarf_reg), 0,
SLAB_PANIC | SLAB_HWCACHE_ALIGN | SLAB_NOTRACK, NULL);
SLAB_PANIC | SLAB_HWCACHE_ALIGN, NULL);
dwarf_frame_pool = mempool_create_slab_pool(DWARF_FRAME_MIN_REQ,
dwarf_frame_cachep);

2
arch/sh/kernel/process.c
View file

@ -59,7 +59,7 @@ void arch_task_cache_init(void)
task_xstate_cachep = kmem_cache_create("task_xstate", xstate_size,
__alignof__(union thread_xstate),
SLAB_PANIC | SLAB_NOTRACK, NULL);
SLAB_PANIC, NULL);
}
#ifdef CONFIG_SH_FPU_EMU

4
arch/sparc/mm/init_64.c
View file

@ -2927,7 +2927,7 @@ void __flush_tlb_all(void)
pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
unsigned long address)
{
struct page *page = alloc_page(GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO);
struct page *page = alloc_page(GFP_KERNEL | __GFP_ZERO);
pte_t *pte = NULL;
if (page)
@ -2939,7 +2939,7 @@ pte_t *pte_alloc_one_kernel(struct mm_struct *mm,
pgtable_t pte_alloc_one(struct mm_struct *mm,
unsigned long address)
{
struct page *page = alloc_page(GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO);
struct page *page = alloc_page(GFP_KERNEL | __GFP_ZERO);
if (!page)
return NULL;
if (!pgtable_page_ctor(page)) {

2
arch/unicore32/include/asm/pgalloc.h
View file

@ -28,7 +28,7 @@ extern void free_pgd_slow(struct mm_struct *mm, pgd_t *pgd);
#define pgd_alloc(mm) get_pgd_slow(mm)
#define pgd_free(mm, pgd) free_pgd_slow(mm, pgd)
#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
#define PGALLOC_GFP (GFP_KERNEL | __GFP_ZERO)
/*
* Allocate one PTE table.

2
arch/x86/kernel/espfix_64.c
View file

@ -57,7 +57,7 @@
# error "Need more virtual address space for the ESPFIX hack"
#endif
#define PGALLOC_GFP (GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO)
#define PGALLOC_GFP (GFP_KERNEL | __GFP_ZERO)
/* This contains the *bottom* address of the espfix stack */
DEFINE_PER_CPU_READ_MOSTLY(unsigned long, espfix_stack);

3
arch/x86/mm/init.c
View file

@ -92,8 +92,7 @@ __ref void *alloc_low_pages(unsigned int num)
unsigned int order;
order = get_order((unsigned long)num << PAGE_SHIFT);
return (void *)__get_free_pages(GFP_ATOMIC | __GFP_NOTRACK |
__GFP_ZERO, order);
return (void *)__get_free_pages(GFP_ATOMIC | __GFP_ZERO, order);
}
if ((pgt_buf_end + num) > pgt_buf_top || !can_use_brk_pgt) {

2
arch/x86/mm/init_64.c
View file

@ -184,7 +184,7 @@ static __ref void *spp_getpage(void)
void *ptr;
if (after_bootmem)
ptr = (void *) get_zeroed_page(GFP_ATOMIC | __GFP_NOTRACK);
ptr = (void *) get_zeroed_page(GFP_ATOMIC);
else
ptr = alloc_bootmem_pages(PAGE_SIZE);

10
arch/x86/mm/pageattr.c
View file

@ -753,7 +753,7 @@ static int split_large_page(struct cpa_data *cpa, pte_t *kpte,
if (!debug_pagealloc_enabled())
spin_unlock(&cpa_lock);
base = alloc_pages(GFP_KERNEL | __GFP_NOTRACK, 0);
base = alloc_pages(GFP_KERNEL, 0);
if (!debug_pagealloc_enabled())
spin_lock(&cpa_lock);
if (!base)
@ -904,7 +904,7 @@ static void unmap_pud_range(p4d_t *p4d, unsigned long start, unsigned long end)
static int alloc_pte_page(pmd_t *pmd)
{
pte_t *pte = (pte_t *)get_zeroed_page(GFP_KERNEL | __GFP_NOTRACK);
pte_t *pte = (pte_t *)get_zeroed_page(GFP_KERNEL);
if (!pte)
return -1;
@ -914,7 +914,7 @@ static int alloc_pte_page(pmd_t *pmd)
static int alloc_pmd_page(pud_t *pud)
{
pmd_t *pmd = (pmd_t *)get_zeroed_page(GFP_KERNEL | __GFP_NOTRACK);
pmd_t *pmd = (pmd_t *)get_zeroed_page(GFP_KERNEL);
if (!pmd)
return -1;
@ -1120,7 +1120,7 @@ static int populate_pgd(struct cpa_data *cpa, unsigned long addr)
pgd_entry = cpa->pgd + pgd_index(addr);
if (pgd_none(*pgd_entry)) {
p4d = (p4d_t *)get_zeroed_page(GFP_KERNEL | __GFP_NOTRACK);
p4d = (p4d_t *)get_zeroed_page(GFP_KERNEL);
if (!p4d)
return -1;
@ -1132,7 +1132,7 @@ static int populate_pgd(struct cpa_data *cpa, unsigned long addr)
*/
p4d = p4d_offset(pgd_entry, addr);
if (p4d_none(*p4d)) {
pud = (pud_t *)get_zeroed_page(GFP_KERNEL | __GFP_NOTRACK);
pud = (pud_t *)get_zeroed_page(GFP_KERNEL);
if (!pud)
return -1;

2
arch/x86/mm/pgtable.c
View file

@ -7,7 +7,7 @@
#include <asm/fixmap.h>
#include <asm/mtrr.h>
#define PGALLOC_GFP (GFP_KERNEL_ACCOUNT | __GFP_NOTRACK | __GFP_ZERO)
#define PGALLOC_GFP (GFP_KERNEL_ACCOUNT | __GFP_ZERO)
#ifdef CONFIG_HIGHPTE
#define PGALLOC_USER_GFP __GFP_HIGHMEM

2
arch/x86/platform/efi/efi_64.c
View file

@ -207,7 +207,7 @@ int __init efi_alloc_page_tables(void)
if (efi_enabled(EFI_OLD_MEMMAP))
return 0;
gfp_mask = GFP_KERNEL | __GFP_NOTRACK | __GFP_ZERO;
gfp_mask = GFP_KERNEL | __GFP_ZERO;
efi_pgd = (pgd_t *)__get_free_page(gfp_mask);
if (!efi_pgd)
return -ENOMEM;

7
crypto/xor.c
View file

@ -122,12 +122,7 @@ calibrate_xor_blocks(void)
goto out;
}
/*
* Note: Since the memory is not actually used for _anything_ but to
* test the XOR speed, we don't really want kmemcheck to warn about
* reading uninitialized bytes here.
*/
b1 = (void *) __get_free_pages(GFP_KERNEL | __GFP_NOTRACK, 2);
b1 = (void *) __get_free_pages(GFP_KERNEL, 2);
if (!b1) {
printk(KERN_WARNING "xor: Yikes! No memory available.\n");
return -ENOMEM;

5
include/linux/thread_info.h
View file

@ -44,10 +44,9 @@ enum {
#endif
#if IS_ENABLED(CONFIG_DEBUG_STACK_USAGE) || IS_ENABLED(CONFIG_DEBUG_KMEMLEAK)
# define THREADINFO_GFP (GFP_KERNEL_ACCOUNT | __GFP_NOTRACK | \
__GFP_ZERO)
# define THREADINFO_GFP (GFP_KERNEL_ACCOUNT | __GFP_ZERO)
#else
# define THREADINFO_GFP (GFP_KERNEL_ACCOUNT | __GFP_NOTRACK)
# define THREADINFO_GFP (GFP_KERNEL_ACCOUNT)
#endif
/*

3
init/do_mounts.c
View file

@ -380,8 +380,7 @@ static int __init do_mount_root(char *name, char *fs, int flags, void *data)
void __init mount_block_root(char *name, int flags)
{
struct page *page = alloc_page(GFP_KERNEL |
__GFP_NOTRACK_FALSE_POSITIVE);
struct page *page = alloc_page(GFP_KERNEL);
char *fs_names = page_address(page);
char *p;
#ifdef CONFIG_BLOCK

12
kernel/fork.c
View file

@ -469,7 +469,7 @@ void __init fork_init(void)
/* create a slab on which task_structs can be allocated */
task_struct_cachep = kmem_cache_create("task_struct",
arch_task_struct_size, align,
SLAB_PANIC|SLAB_NOTRACK|SLAB_ACCOUNT, NULL);
SLAB_PANIC|SLAB_ACCOUNT, NULL);
#endif
/* do the arch specific task caches init */
@ -2205,18 +2205,18 @@ void __init proc_caches_init(void)
sighand_cachep = kmem_cache_create("sighand_cache",
sizeof(struct sighand_struct), 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_TYPESAFE_BY_RCU|
SLAB_NOTRACK|SLAB_ACCOUNT, sighand_ctor);
SLAB_ACCOUNT, sighand_ctor);
signal_cachep = kmem_cache_create("signal_cache",
sizeof(struct signal_struct), 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_NOTRACK|SLAB_ACCOUNT,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
NULL);
files_cachep = kmem_cache_create("files_cache",
sizeof(struct files_struct), 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_NOTRACK|SLAB_ACCOUNT,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
NULL);
fs_cachep = kmem_cache_create("fs_cache",
sizeof(struct fs_struct), 0,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_NOTRACK|SLAB_ACCOUNT,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
NULL);
/*
* FIXME! The "sizeof(struct mm_struct)" currently includes the
@ -2227,7 +2227,7 @@ void __init proc_caches_init(void)
*/
mm_cachep = kmem_cache_create("mm_struct",
sizeof(struct mm_struct), ARCH_MIN_MMSTRUCT_ALIGN,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_NOTRACK|SLAB_ACCOUNT,
SLAB_HWCACHE_ALIGN|SLAB_PANIC|SLAB_ACCOUNT,
NULL);
vm_area_cachep = KMEM_CACHE(vm_area_struct, SLAB_PANIC|SLAB_ACCOUNT);
mmap_init();

3
kernel/signal.c
View file

@ -1036,8 +1036,7 @@ static int __send_signal(int sig, struct siginfo *info, struct task_struct *t,
else
override_rlimit = 0;
q = __sigqueue_alloc(sig, t, GFP_ATOMIC | __GFP_NOTRACK_FALSE_POSITIVE,
override_rlimit);
q = __sigqueue_alloc(sig, t, GFP_ATOMIC, override_rlimit);
if (q) {
list_add_tail(&q->list, &pending->list);
switch ((unsigned long) info) {

2
mm/kmemcheck.c
View file

@ -18,7 +18,7 @@ void kmemcheck_alloc_shadow(struct page *page, int order, gfp_t flags, int node)
* With kmemcheck enabled, we need to allocate a memory area for the
* shadow bits as well.
*/
shadow = alloc_pages_node(node, flags | __GFP_NOTRACK, order);
shadow = alloc_pages_node(node, flags, order);
if (!shadow) {
if (printk_ratelimit())
pr_err("kmemcheck: failed to allocate shadow bitmap\n");

2
mm/slab.c
View file

@ -1410,7 +1410,7 @@ static struct page *kmem_getpages(struct kmem_cache *cachep, gfp_t flags,
flags |= cachep->allocflags;
page = __alloc_pages_node(nodeid, flags | __GFP_NOTRACK, cachep->gfporder);
page = __alloc_pages_node(nodeid, flags, cachep->gfporder);
if (!page) {
slab_out_of_memory(cachep, flags, nodeid);
return NULL;

5
mm/slab.h
View file

@ -141,10 +141,10 @@ static inline slab_flags_t kmem_cache_flags(unsigned long object_size,
#if defined(CONFIG_SLAB)
#define SLAB_CACHE_FLAGS (SLAB_MEM_SPREAD | SLAB_NOLEAKTRACE | \
SLAB_RECLAIM_ACCOUNT | SLAB_TEMPORARY | \
SLAB_NOTRACK | SLAB_ACCOUNT)
SLAB_ACCOUNT)
#elif defined(CONFIG_SLUB)
#define SLAB_CACHE_FLAGS (SLAB_NOLEAKTRACE | SLAB_RECLAIM_ACCOUNT | \
SLAB_TEMPORARY | SLAB_NOTRACK | SLAB_ACCOUNT)
SLAB_TEMPORARY | SLAB_ACCOUNT)
#else
#define SLAB_CACHE_FLAGS (0)
#endif
@ -163,7 +163,6 @@ static inline slab_flags_t kmem_cache_flags(unsigned long object_size,
SLAB_NOLEAKTRACE | \
SLAB_RECLAIM_ACCOUNT | \
SLAB_TEMPORARY | \
SLAB_NOTRACK | \
SLAB_ACCOUNT)
int __kmem_cache_shutdown(struct kmem_cache *);

2
mm/slab_common.c
View file

@ -44,7 +44,7 @@ static DECLARE_WORK(slab_caches_to_rcu_destroy_work,
SLAB_FAILSLAB | SLAB_KASAN)
#define SLAB_MERGE_SAME (SLAB_RECLAIM_ACCOUNT | SLAB_CACHE_DMA | \
SLAB_NOTRACK | SLAB_ACCOUNT)
SLAB_ACCOUNT)
/*
* Merge control. If this is set then no merging of slab caches will occur.

4
mm/slub.c
View file

@ -1436,8 +1436,6 @@ static inline struct page *alloc_slab_page(struct kmem_cache *s,
struct page *page;
int order = oo_order(oo);
flags |= __GFP_NOTRACK;
if (node == NUMA_NO_NODE)
page = alloc_pages(flags, order);
else
@ -3774,7 +3772,7 @@ static void *kmalloc_large_node(size_t size, gfp_t flags, int node)
struct page *page;
void *ptr = NULL;
flags |= __GFP_COMP | __GFP_NOTRACK;
flags |= __GFP_COMP;
page = alloc_pages_node(node, flags, get_order(size));
if (page)
ptr = page_address(page);