From: Sergey Matyukevich <geomatsi@gmail.com>
To: linux-snps-arc@lists.infradead.org
Cc: Vineet Gupta <vgupta@kernel.org>,
Vladimir Isaev <isaev@synopsys.com>,
Christoph Hellwig <hch@lst.de>,
Sergey Matyukevich <geomatsi@gmail.com>,
Sergey Matyukevich <sergey.matyukevich@synopsys.com>
Subject: [RFC PATCH 1/3] arc: use BUILD_BUG for invalid sizes in get_user/put_user
Date: Tue, 1 Feb 2022 17:55:36 +0300 [thread overview]
Message-ID: <20220201145538.111192-2-geomatsi@gmail.com> (raw)
In-Reply-To: <20220201145538.111192-1-geomatsi@gmail.com>
From: Sergey Matyukevich <sergey.matyukevich@synopsys.com>
Use BUILD_BUG for compile-time check of invalid sizes passed
to get_user/put_user functions.
Signed-off-by: Sergey Matyukevich <sergey.matyukevich@synopsys.com>
---
arch/arc/include/asm/uaccess.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arc/include/asm/uaccess.h b/arch/arc/include/asm/uaccess.h
index 783bfdb3bfa3..9d1205bf90f1 100644
--- a/arch/arc/include/asm/uaccess.h
+++ b/arch/arc/include/asm/uaccess.h
@@ -62,6 +62,7 @@
case 2: __arc_get_user_one(*(k), u, "ldw", __ret); break; \
case 4: __arc_get_user_one(*(k), u, "ld", __ret); break; \
case 8: __arc_get_user_one_64(*(k), u, __ret); break; \
+ default: BUILD_BUG(); \
} \
__ret; \
})
@@ -123,6 +124,7 @@
case 2: __arc_put_user_one(*(k), u, "stw", __ret); break; \
case 4: __arc_put_user_one(*(k), u, "st", __ret); break; \
case 8: __arc_put_user_one_64(*(k), u, __ret); break; \
+ default: BUILD_BUG(); \
} \
__ret; \
})
--
2.35.0
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next prev parent reply other threads:[~2022-02-01 14:55 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-01 14:55 [RFC PATCH 0/3] arc: remove CONFIG_SET_FS Sergey Matyukevich
2022-02-01 14:55 ` Sergey Matyukevich [this message]
2022-02-01 15:08 ` [RFC PATCH 1/3] arc: use BUILD_BUG for invalid sizes in get_user/put_user Christoph Hellwig
2022-02-01 14:55 ` [RFC PATCH 2/3] arc: provide __{get,put}_kernel_nofault Sergey Matyukevich
2022-02-01 15:10 ` Christoph Hellwig
2022-02-01 14:55 ` [RFC PATCH 3/3] arc: remove set_fs() Sergey Matyukevich
2022-02-01 15:11 ` Christoph Hellwig
2022-02-02 5:14 ` [RFC PATCH 0/3] arc: remove CONFIG_SET_FS Vineet Gupta
2022-02-15 21:04 ` Sergey Matyukevich
2022-02-18 4:03 ` Vineet Gupta
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