From: Guo Weikang <guoweikang.kernel@xxxxxxxxx> commit 76d5d4c53e68719c018691b19a961e78524a155c upstream. 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@xxxxxxxxx Fixes: 8c8685928910 ("mm/kmemleak: use IS_ERR_PCPU() for pointer in the percpu address space") Signed-off-by: Guo Weikang <guoweikang.kernel@xxxxxxxxx> Acked-by: Uros Bizjak <ubizjak@xxxxxxxxx> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx> Cc: Guo Weikang <guoweikang.kernel@xxxxxxxxx> Cc: <stable@xxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- mm/kmemleak.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/kmemleak.c +++ b/mm/kmemleak.c @@ -1071,7 +1071,7 @@ 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); Patches currently in stable-queue which might be from guoweikang.kernel@xxxxxxxxx are queue-6.12/mm-kmemleak-fix-percpu-memory-leak-detection-failure.patch
