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Message-ID: <20250706092859.412471-1-thorsten.blum@linux.dev> Date: Sun, 6 Jul 2025 11:28:44 +0200 From: Thorsten Blum <thorsten.blum@...ux.dev> To: Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>, x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>, Tom Lendacky <thomas.lendacky@....com>, Nikunj A Dadhania <nikunj@....com>, Ard Biesheuvel <ardb@...nel.org>, Alexey Kardashevskiy <aik@....com>, Ashish Kalra <ashish.kalra@....com> Cc: Thorsten Blum <thorsten.blum@...ux.dev>, kernel test robot <lkp@...el.com>, Ingo Molnar <mingo@...nel.org>, linux-kernel@...r.kernel.org Subject: [PATCH] x86/sev: Replace memset(0) and kfree() with kfree_sensitive() Replace memset(0) followed by kfree() with kfree_sensitive() to improve snp_msg_free() and silence the following Coccinelle/coccicheck warning reported by kfree_sensitive.cocci: WARNING opportunity for kfree_sensitive/kvfree_sensitive No functional changes intended. Reported-by: kernel test robot <lkp@...el.com> Closes: https://lore.kernel.org/r/202501141317.IrSGK4Et-lkp@intel.com/ Signed-off-by: Thorsten Blum <thorsten.blum@...ux.dev> --- arch/x86/coco/sev/core.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/coco/sev/core.c b/arch/x86/coco/sev/core.c index b6db4e0b936b..4bc8423cfd79 100644 --- a/arch/x86/coco/sev/core.c +++ b/arch/x86/coco/sev/core.c @@ -1768,8 +1768,7 @@ 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); -- 2.50.0
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