From: Borislav Petkov (AMD) <bp@alien8.de>
Date: Mon, 12 Jan 2026 11:37:49 +0000 (+0100)
Subject: x86/sev: Use kfree_sensitive() when freeing a SNP message descriptor
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=af05e558988ed004a20fc4de7d0f80cfbba663f0;p=thirdparty%2Fkernel%2Flinux.git

x86/sev: Use kfree_sensitive() when freeing a SNP message descriptor

Use the proper helper instead of an open-coded variant.

Closes: https://lore.kernel.org/r/202512202235.WHPQkLZu-lkp@intel.com
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Julia Lawall <julia.lawall@inria.fr>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Link: https://patch.msgid.link/20260112114147.GBaWTd-8HSy_Xp4S3X@fat_crate.local
---

diff --git a/arch/x86/coco/sev/core.c b/arch/x86/coco/sev/core.c
index a059e004f61bc..1b86f48c7e84a 100644
--- a/arch/x86/coco/sev/core.c
+++ b/arch/x86/coco/sev/core.c
@@ -1632,8 +1632,7 @@ void snp_msg_free(struct snp_msg_desc *mdesc)
 	free_shared_pages(mdesc->request, sizeof(struct snp_guest_msg));
 	iounmap((__force void __iomem *)mdesc->secrets);
 
-	memset(mdesc, 0, sizeof(*mdesc));
-	kfree(mdesc);
+	kfree_sensitive(mdesc);
 }
 EXPORT_SYMBOL_GPL(snp_msg_free);