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mm/slab: enable slab allocation tagging for kmalloc and friends

Browse source 
Redefine kmalloc, krealloc, kzalloc, kcalloc, etc. to record allocations
and deallocations done by these functions.

[surenb@google.com: undo _noprof additions in the documentation]
  Link: https://lkml.kernel.org/r/20240326231453.1206227-7-surenb@google.com
[rdunlap@infradead.org: fix kcalloc() kernel-doc warnings]
  Link: https://lkml.kernel.org/r/20240327044649.9199-1-rdunlap@infradead.org
Link: https://lkml.kernel.org/r/20240321163705.3067592-26-surenb@google.com
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Co-developed-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Tested-by: Kees Cook <keescook@chromium.org>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Cc: Alex Gaynor <alex.gaynor@gmail.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: Andreas Hindborg <a.hindborg@samsung.com>
Cc: Benno Lossin <benno.lossin@proton.me>
Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Gary Guo <gary@garyguo.net>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Suren Baghdasaryan 2024-03-21 09:36:47 -07:00 committed by Andrew Morton
parent 53ed0af496
commit 7bd230a266
6 changed files with 128 additions and 124 deletions
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5
include/linux/fortify-string.h
View file

@ -725,9 +725,9 @@ __FORTIFY_INLINE void *memchr_inv(const void * const POS0 p, int c, size_t size)
return __real_memchr_inv(p, c, size);
}
extern void *__real_kmemdup(const void *src, size_t len, gfp_t gfp) __RENAME(kmemdup)
extern void *__real_kmemdup(const void *src, size_t len, gfp_t gfp) __RENAME(kmemdup_noprof)
__realloc_size(2);
__FORTIFY_INLINE void *kmemdup(const void * const POS0 p, size_t size, gfp_t gfp)
__FORTIFY_INLINE void *kmemdup_noprof(const void * const POS0 p, size_t size, gfp_t gfp)
{
const size_t p_size = __struct_size(p);
@ -737,6 +737,7 @@ __FORTIFY_INLINE void *kmemdup(const void * const POS0 p, size_t size, gfp_t gfp
fortify_panic(FORTIFY_FUNC_kmemdup, FORTIFY_READ, p_size, size, NULL);
return __real_kmemdup(p, size, gfp);
}
#define kmemdup(...) alloc_hooks(kmemdup_noprof(__VA_ARGS__))
/**
* strcpy - Copy a string into another string buffer

171
include/linux/slab.h
View file

@ -271,7 +271,10 @@ int kmem_cache_shrink(struct kmem_cache *s);
/*
* Common kmalloc functions provided by all allocators
*/
void * __must_check krealloc(const void *objp, size_t new_size, gfp_t flags) __realloc_size(2);
void * __must_check krealloc_noprof(const void *objp, size_t new_size,
gfp_t flags) __realloc_size(2);
#define krealloc(...) alloc_hooks(krealloc_noprof(__VA_ARGS__))
void kfree(const void *objp);
void kfree_sensitive(const void *objp);
size_t __ksize(const void *objp);
@ -523,7 +526,10 @@ static __always_inline unsigned int __kmalloc_index(size_t size,
static_assert(PAGE_SHIFT <= 20);
#define kmalloc_index(s) __kmalloc_index(s, true)
void *__kmalloc(size_t size, gfp_t flags) __assume_kmalloc_alignment __alloc_size(1);
#include <linux/alloc_tag.h>
void *__kmalloc_noprof(size_t size, gfp_t flags) __assume_kmalloc_alignment __alloc_size(1);
#define __kmalloc(...) alloc_hooks(__kmalloc_noprof(__VA_ARGS__))
/**
* kmem_cache_alloc - Allocate an object
@ -535,9 +541,14 @@ void *__kmalloc(size_t size, gfp_t flags) __assume_kmalloc_alignment __alloc_siz
*
* Return: pointer to the new object or %NULL in case of error
*/
void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags) __assume_slab_alignment __malloc;
void *kmem_cache_alloc_lru(struct kmem_cache *s, struct list_lru *lru,
gfp_t gfpflags) __assume_slab_alignment __malloc;
void *kmem_cache_alloc_noprof(struct kmem_cache *cachep,
gfp_t flags) __assume_slab_alignment __malloc;
#define kmem_cache_alloc(...) alloc_hooks(kmem_cache_alloc_noprof(__VA_ARGS__))
void *kmem_cache_alloc_lru_noprof(struct kmem_cache *s, struct list_lru *lru,
gfp_t gfpflags) __assume_slab_alignment __malloc;
#define kmem_cache_alloc_lru(...) alloc_hooks(kmem_cache_alloc_lru_noprof(__VA_ARGS__))
void kmem_cache_free(struct kmem_cache *s, void *objp);
/*
@ -548,29 +559,40 @@ void kmem_cache_free(struct kmem_cache *s, void *objp);
* Note that interrupts must be enabled when calling these functions.
*/
void kmem_cache_free_bulk(struct kmem_cache *s, size_t size, void **p);
int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size, void **p);
int kmem_cache_alloc_bulk_noprof(struct kmem_cache *s, gfp_t flags, size_t size, void **p);
#define kmem_cache_alloc_bulk(...) alloc_hooks(kmem_cache_alloc_bulk_noprof(__VA_ARGS__))
static __always_inline void kfree_bulk(size_t size, void **p)
{
kmem_cache_free_bulk(NULL, size, p);
}
void *__kmalloc_node(size_t size, gfp_t flags, int node) __assume_kmalloc_alignment
void *__kmalloc_node_noprof(size_t size, gfp_t flags, int node) __assume_kmalloc_alignment
__alloc_size(1);
void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t flags, int node) __assume_slab_alignment
__malloc;
#define __kmalloc_node(...) alloc_hooks(__kmalloc_node_noprof(__VA_ARGS__))
void *kmalloc_trace(struct kmem_cache *s, gfp_t flags, size_t size)
void *kmem_cache_alloc_node_noprof(struct kmem_cache *s, gfp_t flags,
int node) __assume_slab_alignment __malloc;
#define kmem_cache_alloc_node(...) alloc_hooks(kmem_cache_alloc_node_noprof(__VA_ARGS__))
void *kmalloc_trace_noprof(struct kmem_cache *s, gfp_t flags, size_t size)
__assume_kmalloc_alignment __alloc_size(3);
void *kmalloc_node_trace(struct kmem_cache *s, gfp_t gfpflags,
int node, size_t size) __assume_kmalloc_alignment
void *kmalloc_node_trace_noprof(struct kmem_cache *s, gfp_t gfpflags,
int node, size_t size) __assume_kmalloc_alignment
__alloc_size(4);
void *kmalloc_large(size_t size, gfp_t flags) __assume_page_alignment
__alloc_size(1);
#define kmalloc_trace(...) alloc_hooks(kmalloc_trace_noprof(__VA_ARGS__))
void *kmalloc_large_node(size_t size, gfp_t flags, int node) __assume_page_alignment
#define kmalloc_node_trace(...) alloc_hooks(kmalloc_node_trace_noprof(__VA_ARGS__))
void *kmalloc_large_noprof(size_t size, gfp_t flags) __assume_page_alignment
__alloc_size(1);
#define kmalloc_large(...) alloc_hooks(kmalloc_large_noprof(__VA_ARGS__))
void *kmalloc_large_node_noprof(size_t size, gfp_t flags, int node) __assume_page_alignment
__alloc_size(1);
#define kmalloc_large_node(...) alloc_hooks(kmalloc_large_node_noprof(__VA_ARGS__))
/**
* kmalloc - allocate kernel memory
@ -626,37 +648,39 @@ void *kmalloc_large_node(size_t size, gfp_t flags, int node) __assume_page_align
* Try really hard to succeed the allocation but fail
* eventually.
*/
static __always_inline __alloc_size(1) void *kmalloc(size_t size, gfp_t flags)
static __always_inline __alloc_size(1) void *kmalloc_noprof(size_t size, gfp_t flags)
{
if (__builtin_constant_p(size) && size) {
unsigned int index;
if (size > KMALLOC_MAX_CACHE_SIZE)
return kmalloc_large(size, flags);
return kmalloc_large_noprof(size, flags);
index = kmalloc_index(size);
return kmalloc_trace(
return kmalloc_trace_noprof(
kmalloc_caches[kmalloc_type(flags, _RET_IP_)][index],
flags, size);
}
return __kmalloc(size, flags);
return __kmalloc_noprof(size, flags);
}
#define kmalloc(...) alloc_hooks(kmalloc_noprof(__VA_ARGS__))
static __always_inline __alloc_size(1) void *kmalloc_node(size_t size, gfp_t flags, int node)
static __always_inline __alloc_size(1) void *kmalloc_node_noprof(size_t size, gfp_t flags, int node)
{
if (__builtin_constant_p(size) && size) {
unsigned int index;
if (size > KMALLOC_MAX_CACHE_SIZE)
return kmalloc_large_node(size, flags, node);
return kmalloc_large_node_noprof(size, flags, node);
index = kmalloc_index(size);
return kmalloc_node_trace(
return kmalloc_node_trace_noprof(
kmalloc_caches[kmalloc_type(flags, _RET_IP_)][index],
flags, node, size);
}
return __kmalloc_node(size, flags, node);
return __kmalloc_node_noprof(size, flags, node);
}
#define kmalloc_node(...) alloc_hooks(kmalloc_node_noprof(__VA_ARGS__))
/**
* kmalloc_array - allocate memory for an array.
@ -664,16 +688,17 @@ static __always_inline __alloc_size(1) void *kmalloc_node(size_t size, gfp_t fla
* @size: element size.
* @flags: the type of memory to allocate (see kmalloc).
*/
static inline __alloc_size(1, 2) void *kmalloc_array(size_t n, size_t size, gfp_t flags)
static inline __alloc_size(1, 2) void *kmalloc_array_noprof(size_t n, size_t size, gfp_t flags)
{
size_t bytes;
if (unlikely(check_mul_overflow(n, size, &bytes)))
return NULL;
if (__builtin_constant_p(n) && __builtin_constant_p(size))
return kmalloc(bytes, flags);
return __kmalloc(bytes, flags);
return kmalloc_noprof(bytes, flags);
return kmalloc_noprof(bytes, flags);
}
#define kmalloc_array(...) alloc_hooks(kmalloc_array_noprof(__VA_ARGS__))
/**
* krealloc_array - reallocate memory for an array.
@ -682,18 +707,19 @@ static inline __alloc_size(1, 2) void *kmalloc_array(size_t n, size_t size, gfp_
* @new_size: new size of a single member of the array
* @flags: the type of memory to allocate (see kmalloc)
*/
static inline __realloc_size(2, 3) void * __must_check krealloc_array(void *p,
size_t new_n,
size_t new_size,
gfp_t flags)
static inline __realloc_size(2, 3) void * __must_check krealloc_array_noprof(void *p,
size_t new_n,
size_t new_size,
gfp_t flags)
{
size_t bytes;
if (unlikely(check_mul_overflow(new_n, new_size, &bytes)))
return NULL;
return krealloc(p, bytes, flags);
return krealloc_noprof(p, bytes, flags);
}
#define krealloc_array(...) alloc_hooks(krealloc_array_noprof(__VA_ARGS__))
/**
* kcalloc - allocate memory for an array. The memory is set to zero.
@ -701,16 +727,12 @@ static inline __realloc_size(2, 3) void * __must_check krealloc_array(void *p,
* @size: element size.
* @flags: the type of memory to allocate (see kmalloc).
*/
static inline __alloc_size(1, 2) void *kcalloc(size_t n, size_t size, gfp_t flags)
{
return kmalloc_array(n, size, flags | __GFP_ZERO);
}
#define kcalloc(n, size, flags) kmalloc_array(n, size, (flags) | __GFP_ZERO)
void *__kmalloc_node_track_caller(size_t size, gfp_t flags, int node,
void *kmalloc_node_track_caller_noprof(size_t size, gfp_t flags, int node,
unsigned long caller) __alloc_size(1);
#define kmalloc_node_track_caller(size, flags, node) \
__kmalloc_node_track_caller(size, flags, node, \
_RET_IP_)
#define kmalloc_node_track_caller(...) \
alloc_hooks(kmalloc_node_track_caller_noprof(__VA_ARGS__, _RET_IP_))
/*
* kmalloc_track_caller is a special version of kmalloc that records the
@ -720,11 +742,9 @@ void *__kmalloc_node_track_caller(size_t size, gfp_t flags, int node,
* allocator where we care about the real place the memory allocation
* request comes from.
*/
#define kmalloc_track_caller(size, flags) \
__kmalloc_node_track_caller(size, flags, \
NUMA_NO_NODE, _RET_IP_)
#define kmalloc_track_caller(...) kmalloc_node_track_caller(__VA_ARGS__, NUMA_NO_NODE)
static inline __alloc_size(1, 2) void *kmalloc_array_node(size_t n, size_t size, gfp_t flags,
static inline __alloc_size(1, 2) void *kmalloc_array_node_noprof(size_t n, size_t size, gfp_t flags,
int node)
{
size_t bytes;
@ -732,75 +752,56 @@ static inline __alloc_size(1, 2) void *kmalloc_array_node(size_t n, size_t size,
if (unlikely(check_mul_overflow(n, size, &bytes)))
return NULL;
if (__builtin_constant_p(n) && __builtin_constant_p(size))
return kmalloc_node(bytes, flags, node);
return __kmalloc_node(bytes, flags, node);
return kmalloc_node_noprof(bytes, flags, node);
return __kmalloc_node_noprof(bytes, flags, node);
}
#define kmalloc_array_node(...) alloc_hooks(kmalloc_array_node_noprof(__VA_ARGS__))
static inline __alloc_size(1, 2) void *kcalloc_node(size_t n, size_t size, gfp_t flags, int node)
{
return kmalloc_array_node(n, size, flags | __GFP_ZERO, node);
}
#define kcalloc_node(_n, _size, _flags, _node) \
kmalloc_array_node(_n, _size, (_flags) | __GFP_ZERO, _node)
/*
* Shortcuts
*/
static inline void *kmem_cache_zalloc(struct kmem_cache *k, gfp_t flags)
{
return kmem_cache_alloc(k, flags | __GFP_ZERO);
}
#define kmem_cache_zalloc(_k, _flags) kmem_cache_alloc(_k, (_flags)|__GFP_ZERO)
/**
* kzalloc - allocate memory. The memory is set to zero.
* @size: how many bytes of memory are required.
* @flags: the type of memory to allocate (see kmalloc).
*/
static inline __alloc_size(1) void *kzalloc(size_t size, gfp_t flags)
static inline __alloc_size(1) void *kzalloc_noprof(size_t size, gfp_t flags)
{
return kmalloc(size, flags | __GFP_ZERO);
return kmalloc_noprof(size, flags | __GFP_ZERO);
}
#define kzalloc(...) alloc_hooks(kzalloc_noprof(__VA_ARGS__))
#define kzalloc_node(_size, _flags, _node) kmalloc_node(_size, (_flags)|__GFP_ZERO, _node)
/**
* kzalloc_node - allocate zeroed memory from a particular memory node.
* @size: how many bytes of memory are required.
* @flags: the type of memory to allocate (see kmalloc).
* @node: memory node from which to allocate
*/
static inline __alloc_size(1) void *kzalloc_node(size_t size, gfp_t flags, int node)
{
return kmalloc_node(size, flags | __GFP_ZERO, node);
}
extern void *kvmalloc_node_noprof(size_t size, gfp_t flags, int node) __alloc_size(1);
#define kvmalloc_node(...) alloc_hooks(kvmalloc_node_noprof(__VA_ARGS__))
extern void *kvmalloc_node(size_t size, gfp_t flags, int node) __alloc_size(1);
static inline __alloc_size(1) void *kvmalloc(size_t size, gfp_t flags)
{
return kvmalloc_node(size, flags, NUMA_NO_NODE);
}
static inline __alloc_size(1) void *kvzalloc_node(size_t size, gfp_t flags, int node)
{
return kvmalloc_node(size, flags | __GFP_ZERO, node);
}
static inline __alloc_size(1) void *kvzalloc(size_t size, gfp_t flags)
{
return kvmalloc(size, flags | __GFP_ZERO);
}
#define kvmalloc(_size, _flags) kvmalloc_node(_size, _flags, NUMA_NO_NODE)
#define kvzalloc(_size, _flags) kvmalloc(_size, _flags|__GFP_ZERO)
static inline __alloc_size(1, 2) void *kvmalloc_array(size_t n, size_t size, gfp_t flags)
#define kvzalloc_node(_size, _flags, _node) kvmalloc_node(_size, _flags|__GFP_ZERO, _node)
static inline __alloc_size(1, 2) void *kvmalloc_array_noprof(size_t n, size_t size, gfp_t flags)
{
size_t bytes;
if (unlikely(check_mul_overflow(n, size, &bytes)))
return NULL;
return kvmalloc(bytes, flags);
return kvmalloc_node_noprof(bytes, flags, NUMA_NO_NODE);
}
static inline __alloc_size(1, 2) void *kvcalloc(size_t n, size_t size, gfp_t flags)
{
return kvmalloc_array(n, size, flags | __GFP_ZERO);
}
#define kvmalloc_array(...) alloc_hooks(kvmalloc_array_noprof(__VA_ARGS__))
#define kvcalloc(_n, _size, _flags) kvmalloc_array(_n, _size, _flags|__GFP_ZERO)
extern void *kvrealloc(const void *p, size_t oldsize, size_t newsize, gfp_t flags)
extern void *kvrealloc_noprof(const void *p, size_t oldsize, size_t newsize, gfp_t flags)
__realloc_size(3);
#define kvrealloc(...) alloc_hooks(kvrealloc_noprof(__VA_ARGS__))
extern void kvfree(const void *addr);
DEFINE_FREE(kvfree, void *, if (_T) kvfree(_T))

4
include/linux/string.h
View file

@ -282,7 +282,9 @@ extern void kfree_const(const void *x);
extern char *kstrdup(const char *s, gfp_t gfp) __malloc;
extern const char *kstrdup_const(const char *s, gfp_t gfp);
extern char *kstrndup(const char *s, size_t len, gfp_t gfp);
extern void *kmemdup(const void *src, size_t len, gfp_t gfp) __realloc_size(2);
extern void *kmemdup_noprof(const void *src, size_t len, gfp_t gfp) __realloc_size(2);
#define kmemdup(...) alloc_hooks(kmemdup_noprof(__VA_ARGS__))
extern void *kvmemdup(const void *src, size_t len, gfp_t gfp) __realloc_size(2);
extern char *kmemdup_nul(const char *s, size_t len, gfp_t gfp);
extern void *kmemdup_array(const void *src, size_t element_size, size_t count, gfp_t gfp);

6
mm/slab_common.c
View file

@ -1189,7 +1189,7 @@ __do_krealloc(const void *p, size_t new_size, gfp_t flags)
return (void *)p;
}
ret = kmalloc_track_caller(new_size, flags);
ret = kmalloc_node_track_caller_noprof(new_size, flags, NUMA_NO_NODE, _RET_IP_);
if (ret && p) {
/* Disable KASAN checks as the object's redzone is accessed. */
kasan_disable_current();
@ -1213,7 +1213,7 @@ __do_krealloc(const void *p, size_t new_size, gfp_t flags)
*
* Return: pointer to the allocated memory or %NULL in case of error
*/
void *krealloc(const void *p, size_t new_size, gfp_t flags)
void *krealloc_noprof(const void *p, size_t new_size, gfp_t flags)
{
void *ret;
@ -1228,7 +1228,7 @@ void *krealloc(const void *p, size_t new_size, gfp_t flags)
return ret;
}
EXPORT_SYMBOL(krealloc);
EXPORT_SYMBOL(krealloc_noprof);
/**
* kfree_sensitive - Clear sensitive information in memory before freeing

50
mm/slub.c
View file

@ -4002,7 +4002,7 @@ static __fastpath_inline void *slab_alloc_node(struct kmem_cache *s, struct list
return object;
}
void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
void *kmem_cache_alloc_noprof(struct kmem_cache *s, gfp_t gfpflags)
{
void *ret = slab_alloc_node(s, NULL, gfpflags, NUMA_NO_NODE, _RET_IP_,
s->object_size);
@ -4011,9 +4011,9 @@ void *kmem_cache_alloc(struct kmem_cache *s, gfp_t gfpflags)
return ret;
}
EXPORT_SYMBOL(kmem_cache_alloc);
EXPORT_SYMBOL(kmem_cache_alloc_noprof);
void *kmem_cache_alloc_lru(struct kmem_cache *s, struct list_lru *lru,
void *kmem_cache_alloc_lru_noprof(struct kmem_cache *s, struct list_lru *lru,
gfp_t gfpflags)
{
void *ret = slab_alloc_node(s, lru, gfpflags, NUMA_NO_NODE, _RET_IP_,
@ -4023,7 +4023,7 @@ void *kmem_cache_alloc_lru(struct kmem_cache *s, struct list_lru *lru,
return ret;
}
EXPORT_SYMBOL(kmem_cache_alloc_lru);
EXPORT_SYMBOL(kmem_cache_alloc_lru_noprof);
/**
* kmem_cache_alloc_node - Allocate an object on the specified node
@ -4038,7 +4038,7 @@ EXPORT_SYMBOL(kmem_cache_alloc_lru);
*
* Return: pointer to the new object or %NULL in case of error
*/
void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
void *kmem_cache_alloc_node_noprof(struct kmem_cache *s, gfp_t gfpflags, int node)
{
void *ret = slab_alloc_node(s, NULL, gfpflags, node, _RET_IP_, s->object_size);
@ -4046,7 +4046,7 @@ void *kmem_cache_alloc_node(struct kmem_cache *s, gfp_t gfpflags, int node)
return ret;
}
EXPORT_SYMBOL(kmem_cache_alloc_node);
EXPORT_SYMBOL(kmem_cache_alloc_node_noprof);
/*
* To avoid unnecessary overhead, we pass through large allocation requests
@ -4063,7 +4063,7 @@ static void *__kmalloc_large_node(size_t size, gfp_t flags, int node)
flags = kmalloc_fix_flags(flags);
flags |= __GFP_COMP;
folio = (struct folio *)alloc_pages_node(node, flags, order);
folio = (struct folio *)alloc_pages_node_noprof(node, flags, order);
if (folio) {
ptr = folio_address(folio);
lruvec_stat_mod_folio(folio, NR_SLAB_UNRECLAIMABLE_B,
@ -4078,7 +4078,7 @@ static void *__kmalloc_large_node(size_t size, gfp_t flags, int node)
return ptr;
}
void *kmalloc_large(size_t size, gfp_t flags)
void *kmalloc_large_noprof(size_t size, gfp_t flags)
{
void *ret = __kmalloc_large_node(size, flags, NUMA_NO_NODE);
@ -4086,9 +4086,9 @@ void *kmalloc_large(size_t size, gfp_t flags)
flags, NUMA_NO_NODE);
return ret;
}
EXPORT_SYMBOL(kmalloc_large);
EXPORT_SYMBOL(kmalloc_large_noprof);
void *kmalloc_large_node(size_t size, gfp_t flags, int node)
void *kmalloc_large_node_noprof(size_t size, gfp_t flags, int node)
{
void *ret = __kmalloc_large_node(size, flags, node);
@ -4096,7 +4096,7 @@ void *kmalloc_large_node(size_t size, gfp_t flags, int node)
flags, node);
return ret;
}
EXPORT_SYMBOL(kmalloc_large_node);
EXPORT_SYMBOL(kmalloc_large_node_noprof);
static __always_inline
void *__do_kmalloc_node(size_t size, gfp_t flags, int node,
@ -4123,26 +4123,26 @@ void *__do_kmalloc_node(size_t size, gfp_t flags, int node,
return ret;
}
void *__kmalloc_node(size_t size, gfp_t flags, int node)
void *__kmalloc_node_noprof(size_t size, gfp_t flags, int node)
{
return __do_kmalloc_node(size, flags, node, _RET_IP_);
}
EXPORT_SYMBOL(__kmalloc_node);
EXPORT_SYMBOL(__kmalloc_node_noprof);
void *__kmalloc(size_t size, gfp_t flags)
void *__kmalloc_noprof(size_t size, gfp_t flags)
{
return __do_kmalloc_node(size, flags, NUMA_NO_NODE, _RET_IP_);
}
EXPORT_SYMBOL(__kmalloc);
EXPORT_SYMBOL(__kmalloc_noprof);
void *__kmalloc_node_track_caller(size_t size, gfp_t flags,
int node, unsigned long caller)
void *kmalloc_node_track_caller_noprof(size_t size, gfp_t flags,
int node, unsigned long caller)
{
return __do_kmalloc_node(size, flags, node, caller);
}
EXPORT_SYMBOL(__kmalloc_node_track_caller);
EXPORT_SYMBOL(kmalloc_node_track_caller_noprof);
void *kmalloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
void *kmalloc_trace_noprof(struct kmem_cache *s, gfp_t gfpflags, size_t size)
{
void *ret = slab_alloc_node(s, NULL, gfpflags, NUMA_NO_NODE,
_RET_IP_, size);
@ -4152,9 +4152,9 @@ void *kmalloc_trace(struct kmem_cache *s, gfp_t gfpflags, size_t size)
ret = kasan_kmalloc(s, ret, size, gfpflags);
return ret;
}
EXPORT_SYMBOL(kmalloc_trace);
EXPORT_SYMBOL(kmalloc_trace_noprof);
void *kmalloc_node_trace(struct kmem_cache *s, gfp_t gfpflags,
void *kmalloc_node_trace_noprof(struct kmem_cache *s, gfp_t gfpflags,
int node, size_t size)
{
void *ret = slab_alloc_node(s, NULL, gfpflags, node, _RET_IP_, size);
@ -4164,7 +4164,7 @@ void *kmalloc_node_trace(struct kmem_cache *s, gfp_t gfpflags,
ret = kasan_kmalloc(s, ret, size, gfpflags);
return ret;
}
EXPORT_SYMBOL(kmalloc_node_trace);
EXPORT_SYMBOL(kmalloc_node_trace_noprof);
static noinline void free_to_partial_list(
struct kmem_cache *s, struct slab *slab,
@ -4769,8 +4769,8 @@ static int __kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags,
#endif /* CONFIG_SLUB_TINY */
/* Note that interrupts must be enabled when calling this function. */
int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size,
void **p)
int kmem_cache_alloc_bulk_noprof(struct kmem_cache *s, gfp_t flags, size_t size,
void **p)
{
int i;
struct obj_cgroup *objcg = NULL;
@ -4798,7 +4798,7 @@ int kmem_cache_alloc_bulk(struct kmem_cache *s, gfp_t flags, size_t size,
return i;
}
EXPORT_SYMBOL(kmem_cache_alloc_bulk);
EXPORT_SYMBOL(kmem_cache_alloc_bulk_noprof);
/*

16
mm/util.c
View file

@ -124,16 +124,16 @@ EXPORT_SYMBOL(kstrndup);
* Return: newly allocated copy of @src or %NULL in case of error,
* result is physically contiguous. Use kfree() to free.
*/
void *kmemdup(const void *src, size_t len, gfp_t gfp)
void *kmemdup_noprof(const void *src, size_t len, gfp_t gfp)
{
void *p;
p = kmalloc_track_caller(len, gfp);
p = kmalloc_node_track_caller_noprof(len, gfp, NUMA_NO_NODE, _RET_IP_);
if (p)
memcpy(p, src, len);
return p;
}
EXPORT_SYMBOL(kmemdup);
EXPORT_SYMBOL(kmemdup_noprof);
/**
* kmemdup_array - duplicate a given array.
@ -609,7 +609,7 @@ EXPORT_SYMBOL(vm_mmap);
*
* Return: pointer to the allocated memory of %NULL in case of failure
*/
void *kvmalloc_node(size_t size, gfp_t flags, int node)
void *kvmalloc_node_noprof(size_t size, gfp_t flags, int node)
{
gfp_t kmalloc_flags = flags;
void *ret;
@ -631,7 +631,7 @@ void *kvmalloc_node(size_t size, gfp_t flags, int node)
kmalloc_flags &= ~__GFP_NOFAIL;
}
ret = kmalloc_node(size, kmalloc_flags, node);
ret = kmalloc_node_noprof(size, kmalloc_flags, node);
/*
* It doesn't really make sense to fallback to vmalloc for sub page
@ -660,7 +660,7 @@ void *kvmalloc_node(size_t size, gfp_t flags, int node)
flags, PAGE_KERNEL, VM_ALLOW_HUGE_VMAP,
node, __builtin_return_address(0));
}
EXPORT_SYMBOL(kvmalloc_node);
EXPORT_SYMBOL(kvmalloc_node_noprof);
/**
* kvfree() - Free memory.
@ -699,7 +699,7 @@ void kvfree_sensitive(const void *addr, size_t len)
}
EXPORT_SYMBOL(kvfree_sensitive);
void *kvrealloc(const void *p, size_t oldsize, size_t newsize, gfp_t flags)
void *kvrealloc_noprof(const void *p, size_t oldsize, size_t newsize, gfp_t flags)
{
void *newp;
@ -712,7 +712,7 @@ void *kvrealloc(const void *p, size_t oldsize, size_t newsize, gfp_t flags)
kvfree(p);
return newp;
}
EXPORT_SYMBOL(kvrealloc);
EXPORT_SYMBOL(kvrealloc_noprof);
/**
* __vmalloc_array - allocate memory for a virtually contiguous array.