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Date: Sun, 1 Oct 2017 11:06:50 +1100
From: "Tobin C. Harding" <me@...in.cc>
To: Greg KH <gregkh@...uxfoundation.org>,
Petr Mladek <pmladek@...e.com>,
Joe Perches <joe@...ches.com>,
Ian Campbell <ijc@...lion.org.uk>,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>
Cc: "Tobin C. Harding" <me@...in.cc>,
kernel-hardening@...ts.openwall.com,
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 V2 6/6] drivers: uio: un-restrict sysfs pointers for UIO
The address and size on the UIO devices are required by userspace to
function properly. Let's un-restrict these by adding the 'P' modifier
to %pa.
Signed-off-by: Tobin C. Harding <me@...in.cc>
---
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 ff04b7f..728ec8f 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)
--
2.7.4
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