浏览代码

[SCSI] st: fix test of value range in st_set_options()

value cannot logically be less than START and greater than BUFFERSIZE.

#define EXTENDED_SENSE_START  18

// vi include/scsi/scsi_cmnd.h +105
#define SCSI_SENSE_BUFFERSIZE 	96

[akpm@linux-foundation.org: fix warning]
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Kai Makisara <kai.makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Roel Kluin 15 年之前
父节点
当前提交
832151f458
共有 1 个文件被更改,包括 2 次插入1 次删除
  1. 2 1
      drivers/scsi/st.c

+ 2 - 1
drivers/scsi/st.c

@@ -2280,7 +2280,8 @@ static int st_set_options(struct scsi_tape *STp, long options)
 	} else if (code == MT_ST_SET_CLN) {
 		value = (options & ~MT_ST_OPTIONS) & 0xff;
 		if (value != 0 &&
-		    value < EXTENDED_SENSE_START && value >= SCSI_SENSE_BUFFERSIZE)
+			(value < EXTENDED_SENSE_START ||
+				value >= SCSI_SENSE_BUFFERSIZE))
 			return (-EINVAL);
 		STp->cln_mode = value;
 		STp->cln_sense_mask = (options >> 8) & 0xff;