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Date: Fri, 5 May 2017 21:07:59 -0700
From: Greg KH <gregkh@...uxfoundation.org>
To: kernel-hardening@...ts.openwall.com, Petr Mladek <pmladek@...e.com>,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc: linux-kernel@...r.kernel.org, Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will.deacon@....com>,
Steven Rostedt <rostedt@...dmis.org>,
William Roberts <william.c.roberts@...el.com>,
Chris Fries <cfries@...gle.com>, Dave Weinstein <olorin@...gle.com>
Subject: [RFC 6/6] drivers: uio: Un-restrict sysfs pointers for UIO
From: Chris Fries <cfries@...gle.com>
The addr and size on the UIO devices are required by userspace to function
properly. Let's unrestrict these by adding the 'P' modifier to %p and %pa.
Cc: William Roberts <william.c.roberts@...el.com>
Cc: Dave Weinstein <olorin@...gle.com>
Signed-off-by: Chris Fries <cfries@...gle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
drivers/uio/uio.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c
index 60ce7fd54e89..d9eae52519f4 100644
--- a/drivers/uio/uio.c
+++ b/drivers/uio/uio.c
@@ -56,12 +56,12 @@ static ssize_t map_name_show(struct uio_mem *mem, char *buf)
static ssize_t map_addr_show(struct uio_mem *mem, char *buf)
{
- return sprintf(buf, "%pa\n", &mem->addr);
+ return sprintf(buf, "%paP\n", &mem->addr);
}
static ssize_t map_size_show(struct uio_mem *mem, char *buf)
{
- return sprintf(buf, "%pa\n", &mem->size);
+ return sprintf(buf, "%paP\n", &mem->size);
}
static ssize_t map_offset_show(struct uio_mem *mem, char *buf)
--
2.12.2
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