linux-kernel - [PATCH] x86/fpu/xstate: Use sizeof() instead of a constant

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-Id: <20210122071925.41285-1-yejune.deng@gmail.com>
Date:   Fri, 22 Jan 2021 15:19:25 +0800
From:   Yejune Deng <yejune.deng@...il.com>
To:     tglx@...utronix.de, mingo@...hat.com, bp@...en8.de, x86@...nel.org,
        hpa@...or.com, dave.hansen@...ux.intel.com, yu-cheng.yu@...el.com,
        fenghua.yu@...el.com, tony.luck@...el.com,
        kan.liang@...ux.intel.com, viro@...iv.linux.org.uk,
        kevinb@...hat.com
Cc:     linux-kernel@...r.kernel.org, yejune.deng@...il.com
Subject: [PATCH] x86/fpu/xstate: Use sizeof() instead of a constant

In fpstate_sanitize_xstate(), use sizeof() instead of a constant,
at the same time, remove & and [0].

Signed-off-by: Yejune Deng <yejune.deng@...il.com>
---
 arch/x86/kernel/fpu/xstate.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/x86/kernel/fpu/xstate.c b/arch/x86/kernel/fpu/xstate.c
index 5d8047441a0a..683749b80ae2 100644
--- a/arch/x86/kernel/fpu/xstate.c
+++ b/arch/x86/kernel/fpu/xstate.c
@@ -167,14 +167,14 @@ void fpstate_sanitize_xstate(struct fpu *fpu)
 		fx->fop = 0;
 		fx->rip = 0;
 		fx->rdp = 0;
-		memset(&fx->st_space[0], 0, 128);
+		memset(fx->st_space, 0, sizeof(fx->st_space));
 	}
 
 	/*
 	 * SSE is in init state
 	 */
 	if (!(xfeatures & XFEATURE_MASK_SSE))
-		memset(&fx->xmm_space[0], 0, 256);
+		memset(fx->xmm_space, 0, sizeof(fx->xmm_space));
 
 	/*
 	 * First two features are FPU and SSE, which above we handled
-- 
2.29.0