Messages in this thread Patch in this message | | | From | Long Li <> | Subject | [PATCH] scsi: zero per-cmd driver data for each MQ I/O | Date | Wed, 10 May 2017 14:07:23 -0700 |
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From: Long Li <longli@microsoft.com>
Lower layer driver may not initialize private data before use. Zero them out to prevent use of stale data.
Signed-off-by: Long Li <longli@microsoft.com> --- drivers/scsi/scsi_lib.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index 19125d7..a821593 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -1850,7 +1850,7 @@ static int scsi_mq_prep_fn(struct request *req) /* zero out the cmd, except for the embedded scsi_request */ memset((char *)cmd + sizeof(cmd->req), 0, - sizeof(*cmd) - sizeof(cmd->req)); + sizeof(*cmd) - sizeof(cmd->req) + shost->hostt->cmd_size); req->special = cmd; -- 2.7.4
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