[PATCH] scsi: lpfc: Terminate string in lpfc_debugfs_nvmeio_trc_write()

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The "mybuf" string comes from the user, so we need to ensure that it is
NUL terminated.

Fixes: bd2cdd5e400f ("scsi: lpfc: NVME Initiator: Add debugfs support")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
 drivers/scsi/lpfc/lpfc_debugfs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/scsi/lpfc/lpfc_debugfs.c b/drivers/scsi/lpfc/lpfc_debugfs.c
index 21152c9a96ef..30fac2f6fb06 100644
--- a/drivers/scsi/lpfc/lpfc_debugfs.c
+++ b/drivers/scsi/lpfc/lpfc_debugfs.c
@@ -2954,8 +2954,8 @@ lpfc_debugfs_nvmeio_trc_write(struct file *file, const char __user *buf,
 	char mybuf[64];
 	char *pbuf;
 
-	if (nbytes > 64)
-		nbytes = 64;
+	if (nbytes > 63)
+		nbytes = 63;
 
 	memset(mybuf, 0, sizeof(mybuf));
 
-- 
2.20.1




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