[PATCH 06/22] scsi: fnic: fix format string overflow warning
From: Arnd Bergmann <arnd@arndb.de>
Date: 2017-07-14 12:10:09
Also in:
linux-scsi, lkml
Subsystem:
cisco fcoe hba driver, scsi subsystem, the rest · Maintainers:
Satish Kharat, Sesidhar Baddela, Karan Tilak Kumar, "James E.J. Bottomley", "Martin K. Petersen", Linus Torvalds
The MSI interrupt name can require 11 bytes in addition to the device name,
for a total of 23 bytes:
drivers/scsi/fnic/fnic_isr.c: In function 'fnic_request_intr':
drivers/scsi/fnic/fnic_isr.c:192:4: error: '-fcs-rq' directive writing 7 bytes into a region of size between 5 and 16 [-Werror=format-overflow=]
"%.11s-fcs-rq", fnic->name);
drivers/scsi/fnic/fnic_isr.c:206:3: note: 'sprintf' output between 12 and 23 bytes into a destination of size 16
sprintf(fnic->msix[FNIC_MSIX_ERR_NOTIFY].devname,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
"%.11s-err-notify", fnic->name);
This extends the buffer to fit any possible value.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
drivers/scsi/fnic/fnic.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/scsi/fnic/fnic.h b/drivers/scsi/fnic/fnic.h
index 67aab965c0f4..d094ba59ed15 100644
--- a/drivers/scsi/fnic/fnic.h
+++ b/drivers/scsi/fnic/fnic.h@@ -180,7 +180,7 @@ enum fnic_msix_intr_index { struct fnic_msix_entry { int requested; - char devname[IFNAMSIZ]; + char devname[IFNAMSIZ + 11]; irqreturn_t (*isr)(int, void *); void *devid; };
--
2.9.0