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From: Dave.Martin@arm.com (Dave Martin)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v2 1/2] ARM: iwmmxt: Add missing __user annotations to sigframe accessors
Date: Tue, 27 Jun 2017 18:04:06 +0100	[thread overview]
Message-ID: <1498583067-14178-2-git-send-email-Dave.Martin@arm.com> (raw)
In-Reply-To: <1498583067-14178-1-git-send-email-Dave.Martin@arm.com>

preserve_iwmmxt_context() and restore_iwmmxt_context() lack __user
accessors on their arguments pointing to the user signal frame.

There does not be appear to be a bug here, but this omission is
inconsistent with the crunch and vfp sigframe access functions.

This patch adds the annotations, for consistency.

Signed-off-by: Dave Martin <Dave.Martin@arm.com>
---
 arch/arm/kernel/signal.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 7b8f214..8f06480 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -59,7 +59,7 @@ static int restore_crunch_context(struct crunch_sigframe __user *frame)
 
 #ifdef CONFIG_IWMMXT
 
-static int preserve_iwmmxt_context(struct iwmmxt_sigframe *frame)
+static int preserve_iwmmxt_context(struct iwmmxt_sigframe __user *frame)
 {
 	char kbuf[sizeof(*frame) + 8];
 	struct iwmmxt_sigframe *kframe;
@@ -72,7 +72,7 @@ static int preserve_iwmmxt_context(struct iwmmxt_sigframe *frame)
 	return __copy_to_user(frame, kframe, sizeof(*frame));
 }
 
-static int restore_iwmmxt_context(struct iwmmxt_sigframe *frame)
+static int restore_iwmmxt_context(struct iwmmxt_sigframe __user *frame)
 {
 	char kbuf[sizeof(*frame) + 8];
 	struct iwmmxt_sigframe *kframe;
-- 
2.1.4

  reply	other threads:[~2017-06-27 17:04 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-27 17:04 [RFC PATCH v2 0/2] ARM: Fix unparseable signal frame with CONFIG_IWMMXT Dave Martin
2017-06-27 17:04 ` Dave Martin [this message]
2017-06-27 22:05   ` [RFC PATCH v2 1/2] ARM: iwmmxt: Add missing __user annotations to sigframe accessors Russell King - ARM Linux
2017-06-27 17:04 ` [RFC PATCH v2 2/2] ARM: signal: Fix unparseable iwmmxt_sigframe in uc_regspace[] Dave Martin
2017-06-27 22:08   ` Russell King - ARM Linux
2017-06-28 13:09     ` Dave Martin

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