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authorLevin, Alexander (Sasha Levin) <alexander.levin@verizon.com>2017-11-16 04:35:54 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-11-16 05:21:04 +0300
commit75f296d93bcebcfe375884ddac79e30263a31766 (patch)
treed536ce2a9f7837c26644e14a0ea2ab7b01c07fed
parent4950276672fce5c241857540f8561c440663673d (diff)
downloadlinux-75f296d93bcebcfe375884ddac79e30263a31766.tar.xz
kmemcheck: stop using GFP_NOTRACK and SLAB_NOTRACK
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>
-rw-r--r--arch/arm/include/asm/pgalloc.h2
-rw-r--r--arch/arm64/include/asm/pgalloc.h2
-rw-r--r--arch/powerpc/include/asm/pgalloc.h2
-rw-r--r--arch/sh/kernel/dwarf.c4
-rw-r--r--arch/sh/kernel/process.c2
-rw-r--r--arch/sparc/mm/init_64.c4
-rw-r--r--arch/unicore32/include/asm/pgalloc.h2
-rw-r--r--arch/x86/kernel/espfix_64.c2
-rw-r--r--arch/x86/mm/init.c3
-rw-r--r--arch/x86/mm/init_64.c2
-rw-r--r--arch/x86/mm/pageattr.c10
-rw-r--r--arch/x86/mm/pgtable.c2
-rw-r--r--arch/x86/platform/efi/efi_64.c2
-rw-r--r--crypto/xor.c7
-rw-r--r--include/linux/thread_info.h5
-rw-r--r--init/do_mounts.c3
-rw-r--r--kernel/fork.c12
-rw-r--r--kernel/signal.c3
-rw-r--r--mm/kmemcheck.c2
-rw-r--r--mm/slab.c2
-rw-r--r--mm/slab.h5
-rw-r--r--mm/slab_common.c2
-rw-r--r--mm/slub.c4
23 files changed, 36 insertions, 48 deletions
diff --git a/arch/arm/include/asm/pgalloc.h b/arch/arm/include/asm/pgalloc.h
index b2902a5cd780..2d7344f0e208 100644
--- a/arch/arm/include/asm/pgalloc.h
+++ b/arch/arm/include/asm/pgalloc.h
@@ -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)
{
diff --git a/arch/arm64/include/asm/pgalloc.h b/arch/arm64/include/asm/pgalloc.h
index d25f4f137c2a..5ca6a573a701 100644
--- a/arch/arm64/include/asm/pgalloc.h
+++ b/arch/arm64/include/asm/pgalloc.h
@@ -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
diff --git a/arch/powerpc/include/asm/pgalloc.h b/arch/powerpc/include/asm/pgalloc.h
index a14203c005f1..e11f03007b57 100644
--- a/arch/powerpc/include/asm/pgalloc.h
+++ b/arch/powerpc/include/asm/pgalloc.h
@@ -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>
diff --git a/arch/sh/kernel/dwarf.c b/arch/sh/kernel/dwarf.c
index e1d751ae2498..1a2526676a87 100644
--- a/arch/sh/kernel/dwarf.c
+++ b/arch/sh/kernel/dwarf.c
@@ -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);
diff --git a/arch/sh/kernel/process.c b/arch/sh/kernel/process.c
index b2d9963d5978..68b1a67533ce 100644
--- a/arch/sh/kernel/process.c
+++ b/arch/sh/kernel/process.c
@@ -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
diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c
index 61bdc1270d19..2de22d703076 100644
--- a/arch/sparc/mm/init_64.c
+++ b/arch/sparc/mm/init_64.c
@@ -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)) {
diff --git a/arch/unicore32/include/asm/pgalloc.h b/arch/unicore32/include/asm/pgalloc.h
index 26775793c204..f0fdb268f8f2 100644
--- a/arch/unicore32/include/asm/pgalloc.h
+++ b/arch/unicore32/include/asm/pgalloc.h
@@ -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.
diff --git a/arch/x86/kernel/espfix_64.c b/arch/x86/kernel/espfix_64.c
index 7d7715dde901..e5ec3cafa72e 100644
--- a/arch/x86/kernel/espfix_64.c
+++ b/arch/x86/kernel/espfix_64.c
@@ -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);
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index a22c2b95e513..ef94620ceb8a 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -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) {
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index adcea90a2046..5fa3a58b5d78 100644
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -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);
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index 3fe68483463c..85cf12219dea 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -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;
diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 17ebc5a978cc..96d456a94b03 100644
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -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
diff --git a/arch/x86/platform/efi/efi_64.c b/arch/x86/platform/efi/efi_64.c
index 9e4ee5b04b2d..6a151ce70e86 100644
--- a/arch/x86/platform/efi/efi_64.c
+++ b/arch/x86/platform/efi/efi_64.c
@@ -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;
diff --git a/crypto/xor.c b/crypto/xor.c
index 263af9fb45ea..bce9fe7af40a 100644
--- a/crypto/xor.c
+++ b/crypto/xor.c
@@ -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;
diff --git a/include/linux/thread_info.h b/include/linux/thread_info.h
index 4bcdf00c110f..34f053a150a9 100644
--- a/include/linux/thread_info.h
+++ b/include/linux/thread_info.h
@@ -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
/*
diff --git a/init/do_mounts.c b/init/do_mounts.c
index f6d4dd764a52..7cf4f6dafd5f 100644
--- a/init/do_mounts.c
+++ b/init/do_mounts.c
@@ -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
diff --git a/kernel/fork.c b/kernel/fork.c
index 006dc5899a1a..4e55eedba8d6 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -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();
diff --git a/kernel/signal.c b/kernel/signal.c
index 8dcd8825b2de..aa1fb9f905db 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -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) {
diff --git a/mm/kmemcheck.c b/mm/kmemcheck.c
index 800d64b854ea..b3a4d61d341c 100644
--- a/mm/kmemcheck.c
+++ b/mm/kmemcheck.c
@@ -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");
diff --git a/mm/slab.c b/mm/slab.c
index c84365e9a591..183e996dde5f 100644
--- a/mm/slab.c
+++ b/mm/slab.c
@@ -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;
diff --git a/mm/slab.h b/mm/slab.h
index e60a3d1d8f6f..ad657ffa44e5 100644
--- a/mm/slab.h
+++ b/mm/slab.h
@@ -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 *);
diff --git a/mm/slab_common.c b/mm/slab_common.c
index 175e86637afd..c8cb36774ba1 100644
--- a/mm/slab_common.c
+++ b/mm/slab_common.c
@@ -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.
diff --git a/mm/slub.c b/mm/slub.c
index ac3b50b9abec..91aa99b4b836 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -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);