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scsi: lpfc: Terminate string in lpfc_debugfs_nvmeio_trc_write()

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[ Upstream commit 9020be114a ]

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: bd2cdd5e40 ("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>
This commit is contained in:
Dan Carpenter 2021-12-14 10:05:27 +03:00 • committed by Greg Kroah-Hartman
commit fcb32eb3d0
1 changed files with 2 additions and 2 deletions
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4
drivers/scsi/lpfc/lpfc_debugfs.c
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@ -2956,8 +2956,8 @@ 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));