The patch titled
Subject: drivers/media/usb/usbvision/usbvision-i2c.c: fix format overflow warning
has been added to the -mm tree. Its filename is
usbvision-i2c-fix-format-overflow-warning.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/usbvision-i2c-fix-format-overflow-warning.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/usbvision-i2c-fix-format-overflow-warning.patch
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------------------------------------------------------
From: Arnd Bergmann <arnd@xxxxxxxx>
Subject: drivers/media/usb/usbvision/usbvision-i2c.c: fix format overflow warning
gcc-7 notices that we copy a fixed length string into another
string of the same size, with additional characters:
drivers/media/usb/usbvision/usbvision-i2c.c: In function 'usbvision_i2c_register':
drivers/media/usb/usbvision/usbvision-i2c.c:190:36: error: '%d' directive writing between 1 and 11 bytes into a region of size between 0 and 47 [-Werror=format-overflow=]
sprintf(usbvision->i2c_adap.name, "%s-%d-%s", i2c_adap_template.name,
^~~~~~~~~~
drivers/media/usb/usbvision/usbvision-i2c.c:190:2: note: 'sprintf' output between 4 and 76 bytes into a destination of size 48
We know this is fine as the template name is always "usbvision", so
we can easily avoid the warning by using this as the format string
directly.
Link: http://lkml.kernel.org/r/20170714120720.906842-15-arnd@xxxxxxxx
Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/media/usb/usbvision/usbvision-i2c.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff -puN drivers/media/usb/usbvision/usbvision-i2c.c~usbvision-i2c-fix-format-overflow-warning drivers/media/usb/usbvision/usbvision-i2c.c
--- a/drivers/media/usb/usbvision/usbvision-i2c.c~usbvision-i2c-fix-format-overflow-warning
+++ a/drivers/media/usb/usbvision/usbvision-i2c.c
@@ -187,8 +187,8 @@ int usbvision_i2c_register(struct usb_us
usbvision->i2c_adap = i2c_adap_template;
- sprintf(usbvision->i2c_adap.name, "%s-%d-%s", i2c_adap_template.name,
- usbvision->dev->bus->busnum, usbvision->dev->devpath);
+ sprintf(usbvision->i2c_adap.name, "usbvision-%d-%s",
+ usbvision->dev->bus->busnum, usbvision->dev->devpath);
PDEBUG(DBG_I2C, "Adaptername: %s", usbvision->i2c_adap.name);
usbvision->i2c_adap.dev.parent = &usbvision->dev->dev;
_
Patches currently in -mm which might be from arnd@xxxxxxxx are
kbuild-disable-wformat-truncation-warnings-by-default.patch
scsi-megaraid-fix-format-overflow-warning.patch
scsi-mpt3sas-fix-format-overflow-warning.patch
scsi-fusion-fix-string-overflow-warning.patch
scsi-gdth-avoid-buffer-overflow-warning.patch
scsi-fnic-fix-format-string-overflow-warning.patch
scsi-gdth-increase-the-procfs-event-buffer-size.patch
usbvision-i2c-fix-format-overflow-warning.patch
hwmon-applesmc-fix-format-string-overflow.patch
x86-intel-mid-fix-a-format-string-overflow-warning.patch
platform-x86-alienware-wmi-fix-format-string-overflow-warning.patch
block-dac960-shut-up-format-overflow-warning.patch
fscache-fix-fscache_objlist_show-format-processing.patch
ib-mlx4-fix-sprintf-format-warning.patch
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