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Date: Sun, 8 Oct 2023 10:33:17 +0800
From: Liu Shixin <liushixin2@...wei.com>
To: Catalin Marinas <catalin.marinas@....com>,
Patrick Wang <patrick.wang.shcn@...il.com>,
Andrew Morton <akpm@...ux-foundation.org>
CC: <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>,
Liu Shixin <liushixin2@...wei.com>
Subject: [PATCH v2 4/4] mm/kmemleak: fix print format of pointer in pr_debug()
With 0x%p, the pointer will be hashed and print (____ptrval____) instead.
And with 0x%pa, the pointer can be successfully printed but with duplicate
prefixes, which looks like:
kmemleak: kmemleak_free(0x(____ptrval____))
kmemleak: kmemleak_free_percpu(0x(____ptrval____))
kmemleak: kmemleak_free_part_phys(0x0x0000000a1af86000)
Use 0x%px instead of 0x%p or 0x%pa to print the pointer. Then the print
will be like:
kmemleak: kmemleak_free(0xffff9111c145b020)
kmemleak: kmemleak_free_percpu(0x00000000000333b0)
kmemleak: kmemleak_free_part_phys(0x0000000a1af80000)
Signed-off-by: Liu Shixin <liushixin2@...wei.com>
---
mm/kmemleak.c | 28 ++++++++++++++--------------
1 file changed, 14 insertions(+), 14 deletions(-)
diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index ed497866361a..042cb0d18c7a 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -982,7 +982,7 @@ static void object_no_scan(unsigned long ptr)
void __ref kmemleak_alloc(const void *ptr, size_t size, int min_count,
gfp_t gfp)
{
- pr_debug("%s(0x%p, %zu, %d)\n", __func__, ptr, size, min_count);
+ pr_debug("%s(0x%px, %zu, %d)\n", __func__, ptr, size, min_count);
if (kmemleak_enabled && ptr && !IS_ERR(ptr))
create_object((unsigned long)ptr, size, min_count, gfp);
@@ -1003,7 +1003,7 @@ void __ref kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
{
unsigned int cpu;
- pr_debug("%s(0x%p, %zu)\n", __func__, ptr, size);
+ pr_debug("%s(0x%px, %zu)\n", __func__, ptr, size);
/*
* Percpu allocations are only scanned and not reported as leaks
@@ -1027,7 +1027,7 @@ EXPORT_SYMBOL_GPL(kmemleak_alloc_percpu);
*/
void __ref kmemleak_vmalloc(const struct vm_struct *area, size_t size, gfp_t gfp)
{
- pr_debug("%s(0x%p, %zu)\n", __func__, area, size);
+ pr_debug("%s(0x%px, %zu)\n", __func__, area, size);
/*
* A min_count = 2 is needed because vm_struct contains a reference to
@@ -1050,7 +1050,7 @@ EXPORT_SYMBOL_GPL(kmemleak_vmalloc);
*/
void __ref kmemleak_free(const void *ptr)
{
- pr_debug("%s(0x%p)\n", __func__, ptr);
+ pr_debug("%s(0x%px)\n", __func__, ptr);
if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
delete_object_full((unsigned long)ptr);
@@ -1068,7 +1068,7 @@ EXPORT_SYMBOL_GPL(kmemleak_free);
*/
void __ref kmemleak_free_part(const void *ptr, size_t size)
{
- pr_debug("%s(0x%p)\n", __func__, ptr);
+ pr_debug("%s(0x%px)\n", __func__, ptr);
if (kmemleak_enabled && ptr && !IS_ERR(ptr))
delete_object_part((unsigned long)ptr, size, false);
@@ -1086,7 +1086,7 @@ void __ref kmemleak_free_percpu(const void __percpu *ptr)
{
unsigned int cpu;
- pr_debug("%s(0x%p)\n", __func__, ptr);
+ pr_debug("%s(0x%px)\n", __func__, ptr);
if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
for_each_possible_cpu(cpu)
@@ -1107,7 +1107,7 @@ void __ref kmemleak_update_trace(const void *ptr)
struct kmemleak_object *object;
unsigned long flags;
- pr_debug("%s(0x%p)\n", __func__, ptr);
+ pr_debug("%s(0x%px)\n", __func__, ptr);
if (!kmemleak_enabled || IS_ERR_OR_NULL(ptr))
return;
@@ -1138,7 +1138,7 @@ EXPORT_SYMBOL(kmemleak_update_trace);
*/
void __ref kmemleak_not_leak(const void *ptr)
{
- pr_debug("%s(0x%p)\n", __func__, ptr);
+ pr_debug("%s(0x%px)\n", __func__, ptr);
if (kmemleak_enabled && ptr && !IS_ERR(ptr))
make_gray_object((unsigned long)ptr);
@@ -1156,7 +1156,7 @@ EXPORT_SYMBOL(kmemleak_not_leak);
*/
void __ref kmemleak_ignore(const void *ptr)
{
- pr_debug("%s(0x%p)\n", __func__, ptr);
+ pr_debug("%s(0x%px)\n", __func__, ptr);
if (kmemleak_enabled && ptr && !IS_ERR(ptr))
make_black_object((unsigned long)ptr, false);
@@ -1176,7 +1176,7 @@ EXPORT_SYMBOL(kmemleak_ignore);
*/
void __ref kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
{
- pr_debug("%s(0x%p)\n", __func__, ptr);
+ pr_debug("%s(0x%px)\n", __func__, ptr);
if (kmemleak_enabled && ptr && size && !IS_ERR(ptr))
add_scan_area((unsigned long)ptr, size, gfp);
@@ -1194,7 +1194,7 @@ EXPORT_SYMBOL(kmemleak_scan_area);
*/
void __ref kmemleak_no_scan(const void *ptr)
{
- pr_debug("%s(0x%p)\n", __func__, ptr);
+ pr_debug("%s(0x%px)\n", __func__, ptr);
if (kmemleak_enabled && ptr && !IS_ERR(ptr))
object_no_scan((unsigned long)ptr);
@@ -1210,7 +1210,7 @@ EXPORT_SYMBOL(kmemleak_no_scan);
*/
void __ref kmemleak_alloc_phys(phys_addr_t phys, size_t size, gfp_t gfp)
{
- pr_debug("%s(0x%pa, %zu)\n", __func__, &phys, size);
+ pr_debug("%s(0x%px, %zu)\n", __func__, &phys, size);
if (kmemleak_enabled)
/*
@@ -1230,7 +1230,7 @@ EXPORT_SYMBOL(kmemleak_alloc_phys);
*/
void __ref kmemleak_free_part_phys(phys_addr_t phys, size_t size)
{
- pr_debug("%s(0x%pa)\n", __func__, &phys);
+ pr_debug("%s(0x%px)\n", __func__, &phys);
if (kmemleak_enabled)
delete_object_part((unsigned long)phys, size, true);
@@ -1244,7 +1244,7 @@ EXPORT_SYMBOL(kmemleak_free_part_phys);
*/
void __ref kmemleak_ignore_phys(phys_addr_t phys)
{
- pr_debug("%s(0x%pa)\n", __func__, &phys);
+ pr_debug("%s(0x%px)\n", __func__, &phys);
if (kmemleak_enabled)
make_black_object((unsigned long)phys, true);
--
2.25.1
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