From: Dan Carpenter <[email protected]>

The "> MAX_CONTEXT" should be ">= MAX_CONTEXT".  Otherwise we go one
step beyond the end of the cfg->ctx_tbl[] array.

Signed-off-by: Dan Carpenter <[email protected]>
Reviewed-by: Manoj Kumar <[email protected]>
Acked-by: Matthew R. Ochs <[email protected]>
Signed-off-by: Matthew R. Ochs <[email protected]>
---
This patch was originally sent by Dan Carpenter in September 2015. I had
based my large patch series that went into 4.4 off of it but this patch
appears to have not made it in. As a valid fix, I'd like to see this make
it into 'next'. I've gone ahead and performed the rebase so that it
applies cleanly.

 drivers/scsi/cxlflash/superpipe.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/cxlflash/superpipe.c 
b/drivers/scsi/cxlflash/superpipe.c
index cac2e6a..34b21a0 100644
--- a/drivers/scsi/cxlflash/superpipe.c
+++ b/drivers/scsi/cxlflash/superpipe.c
@@ -1380,7 +1380,7 @@ static int cxlflash_disk_attach(struct scsi_device *sdev,
        }
 
        ctxid = cxl_process_element(ctx);
-       if (unlikely((ctxid > MAX_CONTEXT) || (ctxid < 0))) {
+       if (unlikely((ctxid >= MAX_CONTEXT) || (ctxid < 0))) {
                dev_err(dev, "%s: ctxid (%d) invalid!\n", __func__, ctxid);
                rc = -EPERM;
                goto err2;
@@ -1508,7 +1508,7 @@ static int recover_context(struct cxlflash_cfg *cfg, 
struct ctx_info *ctxi)
        }
 
        ctxid = cxl_process_element(ctx);
-       if (unlikely((ctxid > MAX_CONTEXT) || (ctxid < 0))) {
+       if (unlikely((ctxid >= MAX_CONTEXT) || (ctxid < 0))) {
                dev_err(dev, "%s: ctxid (%d) invalid!\n", __func__, ctxid);
                rc = -EPERM;
                goto err1;
-- 
2.1.0

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