From: Dan Carpenter Date: Sat, 8 Aug 2015 19:16:42 +0000 (+0300) Subject: iio: accel: sca3000: memory corruption in sca3000_read_first_n_hw_rb() X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=eda7d0f38aaf50dbb2a2de15e8db386c4f6f65fc;p=sagit-ice-cold%2Fkernel_xiaomi_msm8998.git iio: accel: sca3000: memory corruption in sca3000_read_first_n_hw_rb() "num_read" is in byte units but we are write u16s so we end up write twice as much as intended. Signed-off-by: Dan Carpenter Cc: Signed-off-by: Jonathan Cameron --- diff --git a/drivers/staging/iio/accel/sca3000_ring.c b/drivers/staging/iio/accel/sca3000_ring.c index 23685e74917e..bd2c69f85949 100644 --- a/drivers/staging/iio/accel/sca3000_ring.c +++ b/drivers/staging/iio/accel/sca3000_ring.c @@ -116,7 +116,7 @@ static int sca3000_read_first_n_hw_rb(struct iio_buffer *r, if (ret) goto error_ret; - for (i = 0; i < num_read; i++) + for (i = 0; i < num_read / sizeof(u16); i++) *(((u16 *)rx) + i) = be16_to_cpup((__be16 *)rx + i); if (copy_to_user(buf, rx, num_read))