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mm/kmemleak: fix percpu memory leak detection failure

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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.com
Fixes: 8c86859289 ("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>
Acked-by: 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>
This commit is contained in:
Guo Weikang 2024-12-27 17:23:10 +08:00 • committed by Andrew Morton
commit 76d5d4c53e
1 changed files with 1 additions and 1 deletions
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2
mm/kmemleak.c
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@ -1093,7 +1093,7 @@ void __ref kmemleak_alloc_percpu(const void __percpu *ptr, size_t size,
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);