[PATCH 2/2] libfc: Corrected the condition check and invalid argument passed
From: Javed Hasan <jhasan@marvell.com>
Date: 2021-06-03 09:57:52
Subsystem:
fcoe subsystem (libfc, libfcoe, fcoe), scsi subsystem, the rest · Maintainers:
Hannes Reinecke, "James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
-In correct condition check was leading to data corruption
and so the invalid argument.
Fixes: 8fd9efca86d0 ("scsi: libfc: Work around -Warray-bounds warning")
Signed-off-by: Javed Hasan <jhasan@marvell.com>
Reviewed-by: Himanshu Madhani <redacted>
---
drivers/scsi/libfc/fc_encode.h | 8 +++++---
1 file changed, 5 insertions(+), 3 deletions(-)
diff --git a/drivers/scsi/libfc/fc_encode.h b/drivers/scsi/libfc/fc_encode.h
index 602c97a651bc..9ea4ceadb559 100644
--- a/drivers/scsi/libfc/fc_encode.h
+++ b/drivers/scsi/libfc/fc_encode.h@@ -166,9 +166,11 @@ static inline int fc_ct_ns_fill(struct fc_lport *lport, static inline void fc_ct_ms_fill_attr(struct fc_fdmi_attr_entry *entry, const char *in, size_t len) { - int copied = strscpy(entry->value, in, len); - if (copied > 0) - memset(entry->value, copied, len - copied); + int copied; + + copied = strscpy((char *)&entry->value, in, len); + if (copied > 0 && (copied + 1) < len) + memset((entry->value + copied + 1), 0, len - copied - 1); } /**
--
2.26.2