From: Dan Carpenter dan.carpenter@oracle.com
[ Upstream commit 9020be114a47bf7ff33e179b3bb0016b91a098e6 ]
The "mybuf" string comes from the user, so we need to ensure that it is NUL terminated.
Link: https://lore.kernel.org/r/20211214070527.GA27934@kili Fixes: bd2cdd5e400f ("scsi: lpfc: NVME Initiator: Add debugfs support") Reviewed-by: James Smart jsmart2021@gmail.com Signed-off-by: Dan Carpenter dan.carpenter@oracle.com Signed-off-by: Martin K. Petersen martin.petersen@oracle.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 2c70e311943ac..0a908d1cc494a 100644 --- a/drivers/scsi/lpfc/lpfc_debugfs.c +++ b/drivers/scsi/lpfc/lpfc_debugfs.c @@ -2267,8 +2267,8 @@ 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));