+ mm-kmemleak-use-is_err_pcpu-for-pointer-in-the-percpu-address-space.patch added to mm-nonmm-unstable branch

+ mm-kmemleak-use-is_err_pcpu-for-pointer-in-the-percpu-address-space.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/kmemleak: use IS_ERR_PCPU() for pointer in the percpu address space
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     mm-kmemleak-use-is_err_pcpu-for-pointer-in-the-percpu-address-space.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-kmemleak-use-is_err_pcpu-for-pointer-in-the-percpu-address-space.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Uros Bizjak <ubizjak@gmail.com>
Subject: mm/kmemleak: use IS_ERR_PCPU() for pointer in the percpu address space
Date: Sun, 18 Aug 2024 23:01:52 +0200

Use IS_ERR_PCPU() instead of IS_ERR() for pointers in the percpu address
space.  The patch also fixes following sparse warnings:

kmemleak.c:1063:39: warning: cast removes address space '__percpu' of expression
kmemleak.c:1138:37: warning: cast removes address space '__percpu' of expression

Link: https://lkml.kernel.org/r/20240818210235.33481-2-ubizjak@gmail.com
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/kmemleak.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

--- a/mm/kmemleak.c~mm-kmemleak-use-is_err_pcpu-for-pointer-in-the-percpu-address-space
+++ a/mm/kmemleak.c
@@ -1070,8 +1070,8 @@ void __ref kmemleak_alloc_percpu(const v
 {
 	pr_debug("%s(0x%px, %zu)\n", __func__, ptr, size);
 
-	if (kmemleak_enabled && ptr && !IS_ERR(ptr))
-		create_object_percpu((unsigned long)ptr, size, 1, gfp);
+	if (kmemleak_enabled && ptr && !IS_ERR_PCPU(ptr))
+		create_object_percpu((__force unsigned long)ptr, size, 0, gfp);
 }
 EXPORT_SYMBOL_GPL(kmemleak_alloc_percpu);
 
@@ -1145,8 +1145,8 @@ void __ref kmemleak_free_percpu(const vo
 {
 	pr_debug("%s(0x%px)\n", __func__, ptr);
 
-	if (kmemleak_free_enabled && ptr && !IS_ERR(ptr))
-		delete_object_full((unsigned long)ptr, OBJECT_PERCPU);
+	if (kmemleak_free_enabled && ptr && !IS_ERR_PCPU(ptr))
+		delete_object_full((__force unsigned long)ptr, OBJECT_PERCPU);
 }
 EXPORT_SYMBOL_GPL(kmemleak_free_percpu);
 
_

Patches currently in -mm which might be from ubizjak@gmail.com are

mm-z3fold-add-__percpu-annotation-to-unbuddied-pointer-in-struct-z3fold_pool.patch
kexec-use-atomic_try_cmpxchg_acquire-in-kexec_trylock.patch
lib-percpu_counter-add-missing-__percpu-qualifier-to-a-cast.patch
errh-add-err_ptr_pcpu-ptr_err_pcpu-and-is_err_pcpu-macros.patch
mm-kmemleak-use-is_err_pcpu-for-pointer-in-the-percpu-address-space.patch