From: Hannes Reinecke <hare@suse.de>
Date: Thu, 8 Jan 2015 06:43:49 +0000 (+0100)
Subject: scsi: Do not display buffer pointers in scsi_log_send()
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=a4a6afb477a9e724a6ff7204e4199f0c2cd97d6a;p=deliverable%2Flinux.git

scsi: Do not display buffer pointers in scsi_log_send()

scsi_log_send() would display buffer pointer for higher logging levels.
This is not only of questionable value but also exposes kernel pointer to
userspace, which is discouraged in some setups. So drop this message
altogether.

Tested-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
---

diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 7f028cb1d099..08c90a711556 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -531,7 +531,7 @@ void scsi_log_send(struct scsi_cmnd *cmd)
 	 *
 	 * 3: same as 2
 	 *
-	 * 4: same as 3 plus dump extra junk
+	 * 4: same as 3
 	 */
 	if (unlikely(scsi_logging_level)) {
 		level = SCSI_LOG_LEVEL(SCSI_LOG_MLQUEUE_SHIFT,
@@ -540,13 +540,6 @@ void scsi_log_send(struct scsi_cmnd *cmd)
 			scmd_printk(KERN_INFO, cmd,
 				    "Send: scmd 0x%p\n", cmd);
 			scsi_print_command(cmd);
-			if (level > 3) {
-				printk(KERN_INFO "buffer = 0x%p, bufflen = %d,"
-				       " queuecommand 0x%p\n",
-					scsi_sglist(cmd), scsi_bufflen(cmd),
-					cmd->device->host->hostt->queuecommand);
-
-			}
 		}
 	}
 }