From: Chen Gang <gang.chen.5i5j@gmail.com>
To: marek.belisko@gmail.com, katjacollier@gmail.com,
linux@rainbow-software.org, Al Viro <viro@zeniv.linux.org.uk>
Cc: rkuo <rkuo@codeaurora.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Greg KH <gregkh@linuxfoundation.org>,
"devel@driverdev.osuosl.org" <devel@driverdev.osuosl.org>
Subject: [PATCH] drivers: staging: ft1000: ft1000-usb: ft1000_debug.c: check return value of get_user() in ft1000_ioctl()
Date: Wed, 27 Nov 2013 11:40:58 +0800 [thread overview]
Message-ID: <529569CA.4070708@gmail.com> (raw)
In-Reply-To: <5294255E.7040105@gmail.com>
get_user() may fail and cause 'msgsz' uninitialized, so need give a
check. The related warning (with allmodconfig under hexagon):
CC [M] drivers/staging/ft1000/ft1000-usb/ft1000_debug.o
drivers/staging/ft1000/ft1000-usb/ft1000_debug.c: In function 'ft1000_ioctl':
include/uapi/linux/swab.h:53:9: warning: 'msgsz' may be used uninitialized in this function [-Wuninitialized]
drivers/staging/ft1000/ft1000-usb/ft1000_debug.c:533:17: note: 'msgsz' was declared here
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
---
drivers/staging/ft1000/ft1000-usb/ft1000_debug.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/drivers/staging/ft1000/ft1000-usb/ft1000_debug.c b/drivers/staging/ft1000/ft1000-usb/ft1000_debug.c
index 68a55ce..ffdc7f5 100644
--- a/drivers/staging/ft1000/ft1000-usb/ft1000_debug.c
+++ b/drivers/staging/ft1000/ft1000-usb/ft1000_debug.c
@@ -560,6 +560,8 @@ static long ft1000_ioctl(struct file *file, unsigned int command,
/* Get the length field to see how many bytes to copy */
result = get_user(msgsz, (__u16 __user *)argp);
+ if (result)
+ break;
msgsz = ntohs(msgsz);
/* DEBUG("FT1000:ft1000_ioctl: length of message = %d\n", msgsz); */
--
1.7.7.6
next prev parent reply other threads:[~2013-11-27 3:38 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-19 4:57 [PATCH] arch: hexagon: Kconfig: add HAVE_DMA_ATTR in Kconfig and remove "linux/dma-mapping.h" from "asm/dma-mapping.h" Chen Gang
2013-11-25 1:19 ` rkuo
2013-11-25 2:39 ` [PATCH 0/2] arch: hexagon: include: asm: add prefix "vm_" for all enum members in "hexagon_vm.h" Chen Gang
2013-11-25 2:40 ` [PATCH 1/2] " Chen Gang
2013-11-25 2:41 ` [PATCH 2/2] arch: hexagon: include: asm: use 'affinity' instead of 'locdis' for __vmintop_affinity() " Chen Gang
2013-11-28 8:51 ` [PATCH v2] arch: hexagon: include: asm: add prefix "hvm[ci]_" for all enum members " Chen Gang
2013-12-06 18:22 ` rkuo
2013-11-26 4:36 ` [PATCH 1/2] arch: hexagon: include: asm: add prefix "vm_" " Chen Gang
2013-11-27 2:29 ` [PATCH] drivers: scsi: scsi_lib.c: add prefix "SCSILIB_" to macro "SP" Chen Gang
2013-12-01 16:17 ` Bart Van Assche
2013-12-02 0:34 ` Chen Gang
2013-12-02 0:49 ` James Bottomley
2013-12-02 10:14 ` Chen Gang
2013-12-02 21:32 ` rkuo
2013-12-03 11:42 ` Chen Gang
2013-12-04 2:42 ` [PATCH v2] drivers: scsi: scsi_lib.c: use SG_POOL instead of SP Chen Gang
2013-11-27 3:01 ` [PATCH] drivers: staging: ft1000: ft1000-usb: initialize 'status' with STATUS_SUCCESS in request_code_segment() Chen Gang
2013-11-27 9:18 ` Josh Triplett
2013-11-27 9:27 ` Chen Gang
2013-12-04 7:31 ` Chen Gang
2013-11-27 3:17 ` [PATCH] drivers: staging: media: go7007: go7007-usb.c use pr_*() instead of dev_*() before 'go' initialized in go7007_usb_probe() Chen Gang
2013-11-27 3:21 ` Joe Perches
2013-11-27 3:40 ` Chen Gang
2013-11-27 3:48 ` [PATCH v2] " Chen Gang
2013-11-27 4:03 ` Greg KH
2013-11-27 4:24 ` Chen Gang
2013-11-27 10:43 ` Dan Carpenter
2013-11-28 1:47 ` Chen Gang
2013-11-27 3:40 ` Chen Gang [this message]
2013-11-27 4:53 ` [PATCH] net: mac80211: tx.c: be sure of 'sdata->vif.type' must be NL80211_IFTYPE_AP when be in NL80211_IFTYPE_AP case Chen Gang
2013-11-29 15:38 ` Johannes Berg
2013-11-30 11:59 ` Chen Gang
2013-11-30 12:53 ` Johannes Berg
2013-11-30 13:50 ` Chen Gang
2013-11-30 14:02 ` Chen Gang
2013-11-30 20:08 ` Johannes Berg
2013-11-30 20:39 ` Joe Perches
2013-11-30 23:48 ` Chen Gang
2013-11-30 23:59 ` Chen Gang
2013-12-01 9:37 ` Johannes Berg
2013-12-01 11:50 ` Chen Gang
2013-12-01 9:35 ` Johannes Berg
2013-12-01 22:38 ` Joe Perches
2013-12-02 0:45 ` Chen Gang
2013-12-02 14:48 ` Johannes Berg
2013-12-04 2:12 ` Chen Gang
2013-12-04 8:04 ` Johannes Berg
2013-12-04 8:41 ` Chen Gang
2013-12-04 8:49 ` Johannes Berg
2013-12-04 9:00 ` Chen Gang
2013-11-27 5:28 ` [PATCH] arch: hexagon: include: uapi: asm: setup.h add swith macro __KERNEL__ Chen Gang
2013-12-06 18:21 ` rkuo
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