From: "Gustavo A. R. Silva" <gustavo@embeddedor.com>
To: Oleg Nesterov <oleg@redhat.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
"H. Peter Anvin" <hpa@zytor.com>,
x86@kernel.org
Cc: linux-kernel@vger.kernel.org,
"Gustavo A. R. Silva" <gustavo@embeddedor.com>,
Kees Cook <keescook@chromium.org>
Subject: [PATCH] x86/ptrace: Mark expected switch fall-through
Date: Mon, 5 Aug 2019 14:56:54 -0500 [thread overview]
Message-ID: <20190805195654.GA17831@embeddedor> (raw)
Mark switch cases where we are expecting to fall through.
Fix the following warning (Building: allnoconfig i386):
arch/x86/kernel/ptrace.c:202:6: warning: this statement may fall through [-Wimplicit-fallthrough=]
if (unlikely(value == 0))
^
arch/x86/kernel/ptrace.c:206:2: note: here
default:
^~~~~~~
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
arch/x86/kernel/ptrace.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/x86/kernel/ptrace.c b/arch/x86/kernel/ptrace.c
index 0fdbe89d0754..3c5bbe8e4120 100644
--- a/arch/x86/kernel/ptrace.c
+++ b/arch/x86/kernel/ptrace.c
@@ -201,6 +201,7 @@ static int set_segment_reg(struct task_struct *task,
case offsetof(struct user_regs_struct, ss):
if (unlikely(value == 0))
return -EIO;
+ /* Else, fall through */
default:
*pt_regs_access(task_pt_regs(task), offset) = value;
--
2.22.0
next reply other threads:[~2019-08-05 19:56 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-05 19:56 Gustavo A. R. Silva [this message]
2019-08-05 20:19 ` [PATCH] x86/ptrace: Mark expected switch fall-through Kees Cook
2019-08-07 13:16 ` [tip:x86/urgent] " tip-bot for Gustavo A. R. Silva
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