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| author | Arnaud Patard (Rtp) <arnaud.patard@rtp-net.org> | 2010-08-23 23:02:22 +0200 |
|---|---|---|
| committer | John W. Linville <linville@tuxdriver.com> | 2010-08-25 14:34:56 -0400 |
| commit | f8d8b7a13d3d61f99bf3dc5c9650f87f9818d7a7 (patch) | |
| tree | 2886d6df130230769ec1173915c9f518e7f883cb /drivers/net/wireless/rt2x00/rt2x00debug.c | |
| parent | 8d1331b37d5b656a7a8e561f8e9d7661dd00c910 (diff) | |
| download | olio-linux-3.10-f8d8b7a13d3d61f99bf3dc5c9650f87f9818d7a7.tar.xz olio-linux-3.10-f8d8b7a13d3d61f99bf3dc5c9650f87f9818d7a7.zip | |
rt2x00: fix "buffer size not provably correct" build warning
rt2x00 debugfs interface doesn't check the size of the data coming
from userspace, leading to a build warning. Fix That.
v2: return EINVAL if input is too long
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'drivers/net/wireless/rt2x00/rt2x00debug.c')
| -rw-r--r-- | drivers/net/wireless/rt2x00/rt2x00debug.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/net/wireless/rt2x00/rt2x00debug.c b/drivers/net/wireless/rt2x00/rt2x00debug.c index 74f0d679883..daf7f950a28 100644 --- a/drivers/net/wireless/rt2x00/rt2x00debug.c +++ b/drivers/net/wireless/rt2x00/rt2x00debug.c @@ -480,6 +480,9 @@ static ssize_t rt2x00debug_write_##__name(struct file *file, \ if (index >= debug->__name.word_count) \ return -EINVAL; \ \ + if (length > sizeof(line)) \ + return -EINVAL; \ + \ if (copy_from_user(line, buf, length)) \ return -EFAULT; \ \ |