The patch titled Subject: mm/kmemleak: fix percpu memory leak detection failure has been added to the -mm mm-hotfixes-unstable branch. Its filename is mm-kmemleak-fix-percpu-memory-leak-detection-failure.patch

This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...

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

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------------------------------------------------------ From: Guo Weikang guoweikang.kernel@gmail.com Subject: mm/kmemleak: fix percpu memory leak detection failure Date: Fri, 27 Dec 2024 17:23:10 +0800

kmemleak_alloc_percpu gives an incorrect min_count parameter, causing percpu memory to be considered a gray object.

Link: https://lkml.kernel.org/r/20241227092311.3572500-1-guoweikang.kernel@gmail.c... Fixes: 8c8685928910 ("mm/kmemleak: use IS_ERR_PCPU() for pointer in the percpu address space") Signed-off-by: Guo Weikang guoweikang.kernel@gmail.com Acked-by: Uros Bizjak ubizjak@gmail.com Cc: Catalin Marinas catalin.marinas@arm.com Cc: Guo Weikang guoweikang.kernel@gmail.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/kmemleak.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/mm/kmemleak.c~mm-kmemleak-fix-percpu-memory-leak-detection-failure +++ a/mm/kmemleak.c @@ -1093,7 +1093,7 @@ void __ref kmemleak_alloc_percpu(const v pr_debug("%s(0x%px, %zu)\n", __func__, ptr, size);

if (kmemleak_enabled && ptr && !IS_ERR_PCPU(ptr)) - create_object_percpu((__force unsigned long)ptr, size, 0, gfp); + create_object_percpu((__force unsigned long)ptr, size, 1, gfp); } EXPORT_SYMBOL_GPL(kmemleak_alloc_percpu);

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

mm-kmemleak-fix-percpu-memory-leak-detection-failure.patch mm-shmem-refactor-to-reuse-vfs_parse_monolithic_sep-for-option-parsing.patch mm-early_ioremap-add-null-pointer-checks-to-prevent-null-pointer-dereference.patch