From: Guo Weikang <guoweikang.kernel@gmail.com>
Date: Fri, 27 Dec 2024 09:23:10 +0000 (+0800)
Subject: mm/kmemleak: fix percpu memory leak detection failure
X-Git-Tag: v6.13~27^2~17
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=76d5d4c53e68719c018691b19a961e78524a155c;p=thirdparty%2Flinux.git

mm/kmemleak: fix percpu memory leak detection failure

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: 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>
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>
---

diff --git a/mm/kmemleak.c b/mm/kmemleak.c
index 737af23f4f4e1..820ba3b5cbfc8 100644
--- a/mm/kmemleak.c
+++ b/mm/kmemleak.c
@@ -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);