The patch titled
Subject: mm/kmemleak: use IS_ERR_PCPU() for pointer in the percpu address space
has been added to the -mm mm-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-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Uros Bizjak <ubizjak@xxxxxxxxx>
Subject: mm/kmemleak: use IS_ERR_PCPU() for pointer in the percpu address space
Date: Tue, 13 Aug 2024 19:25:11 +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/20240813172543.38411-2-ubizjak@xxxxxxxxx
Signed-off-by: Uros Bizjak <ubizjak@xxxxxxxxx>
Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
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, 1, 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@xxxxxxxxx are
mm-z3fold-add-__percpu-annotation-to-unbuddied-pointer-in-struct-z3fold_pool.patch
errh-add-err_ptr_pcpu-ptr_err_pcpu-and-is_err_pcpu-functions.patch
mm-kmemleak-use-is_err_pcpu-for-pointer-in-the-percpu-address-space.patch
kexec-use-atomic_try_cmpxchg_acquire-in-kexec_trylock.patch
