From 514e59c1195f2634dab025d952242f5e69e052c7 Mon Sep 17 00:00:00 2001 From: Arnd Bergmann Date: Fri, 14 Jul 2017 14:06:58 +0200 Subject: [PATCH] scsi: fnic: fix format string overflow warning 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 Signed-off-by: Martin K. Petersen --- 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; }; -- 2.20.1