From: David Miller <davem@davemloft.net>
To: arnd@arndb.de
Cc: linux-kernel@vger.kernel.org, Yuval.Mintz@cavium.com,
ariel.elior@cavium.com, everest-linux-l2@cavium.com,
gregkh@linuxfoundation.org, torvalds@linux-foundation.org,
linux@roeck-us.net, akpm@linux-foundation.org,
netdev@vger.kernel.org, jejb@linux.vnet.ibm.com,
martin.petersen@oracle.com, linux-scsi@vger.kernel.org,
x86@kernel.org, colin.king@canonical.com, tremyfr@gmail.com
Subject: Re: [PATCH 10/22] bnx2x: fix format overflow warning
Date: Fri, 14 Jul 2017 09:03:46 -0700 (PDT) [thread overview]
Message-ID: <20170714.090346.1021214085207295498.davem@davemloft.net> (raw)
In-Reply-To: <20170714120720.906842-11-arnd@arndb.de>
From: Arnd Bergmann <arnd@arndb.de>
Date: Fri, 14 Jul 2017 14:07:02 +0200
> gcc notices that large queue numbers would overflow the queue name
> string:
>
> drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c: In function 'bnx2x_get_strings':
> drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c:3165:25: error: '%d' directive writing between 1 and 10 bytes into a region of size 5 [-Werror=format-overflow=]
> drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c:3165:25: note: directive argument in the range [0, 2147483647]
> drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c:3165:5: note: 'sprintf' output between 2 and 11 bytes into a destination of size 5
>
> There is a hard limit in place that makes the number at most two
> digits, so the code is fine. This changes it to use snprintf()
> to truncate instead of overflowing, which shuts up that warning.
>
> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Applied.
next prev parent reply other threads:[~2017-07-14 16:03 UTC|newest]
Thread overview: 48+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-14 12:06 [PATCH 00/22] gcc-7 -Wformat-* warnings Arnd Bergmann
2017-07-14 12:06 ` [PATCH 01/22] kbuild: disable -Wformat-truncation warnings by default Arnd Bergmann
2017-07-14 12:06 ` [PATCH 02/22] scsi: megaraid: fix format-overflow warning Arnd Bergmann
2017-07-14 12:06 ` [PATCH 03/22] scsi: mpt3sas: fix format overflow warning Arnd Bergmann
2017-07-14 12:06 ` [PATCH 04/22] scsi: fusion: fix string " Arnd Bergmann
2017-07-17 9:17 ` David Laight
2017-07-17 12:00 ` Arnd Bergmann
2017-07-14 12:06 ` [PATCH 05/22] scsi: gdth: avoid buffer " Arnd Bergmann
2017-07-14 12:06 ` [PATCH 06/22] scsi: fnic: fix format string " Arnd Bergmann
2017-07-14 12:06 ` [PATCH 07/22] scsi: gdth: increase the procfs event buffer size Arnd Bergmann
2017-07-14 12:07 ` [PATCH 08/22] isdn: divert: fix sprintf buffer overflow warning Arnd Bergmann
2017-07-14 16:03 ` David Miller
2017-07-14 12:07 ` [PATCH 09/22] net: niu: fix format string overflow warning: Arnd Bergmann
2017-07-14 16:03 ` David Miller
2017-07-14 12:07 ` [PATCH 10/22] bnx2x: fix format overflow warning Arnd Bergmann
2017-07-14 16:03 ` David Miller [this message]
2017-07-14 12:07 ` [PATCH 11/22] net: thunder_bgx: avoid format string " Arnd Bergmann
2017-07-14 12:33 ` Robin Murphy
2017-07-14 16:03 ` David Miller
2017-07-14 12:07 ` [PATCH 12/22] vmxnet3: avoid format strint " Arnd Bergmann
2017-07-14 16:04 ` David Miller
2017-07-14 12:07 ` [PATCH 13/22] liquidio: fix possible eeprom format string overflow Arnd Bergmann
2017-07-14 16:04 ` David Miller
2017-07-14 22:40 ` Burla, Satananda
2017-07-14 12:07 ` [PATCH 14/22] [media] usbvision-i2c: fix format overflow warning Arnd Bergmann
2017-07-17 12:53 ` Hans Verkuil
2017-07-17 12:57 ` Arnd Bergmann
2017-07-17 12:59 ` Hans Verkuil
2017-07-14 12:07 ` [PATCH 15/22] hwmon: applesmc: fix format string overflow Arnd Bergmann
2017-07-14 14:06 ` Guenter Roeck
2017-07-14 12:07 ` [PATCH 16/22] x86: intel-mid: fix a format string overflow warning Arnd Bergmann
2017-07-14 12:07 ` [PATCH 17/22] platform/x86: alienware-wmi: fix " Arnd Bergmann
2017-07-14 18:30 ` Mario.Limonciello
2017-07-14 19:18 ` Andy Shevchenko
2017-07-14 19:37 ` Arnd Bergmann
2017-07-14 19:49 ` Andy Shevchenko
2017-07-14 12:07 ` [PATCH 18/22] gpio: acpi: fix string overflow for large pin numbers Arnd Bergmann
2017-07-14 12:52 ` Andy Shevchenko
2017-07-14 19:59 ` Arnd Bergmann
2017-07-14 12:07 ` [PATCH 19/22] block: DAC960: shut up format-overflow warning Arnd Bergmann
2017-07-14 14:04 ` Jens Axboe
2017-07-14 12:07 ` [PATCH 20/22] sound: pci: avoid string overflow warnings Arnd Bergmann
2017-07-14 12:28 ` Takashi Iwai
2017-07-18 11:52 ` Arnd Bergmann
2017-07-14 12:07 ` [PATCH 21/22] fscache: fix fscache_objlist_show format processing Arnd Bergmann
2017-07-14 12:07 ` [PATCH 22/22] IB/mlx4: fix sprintf format warning Arnd Bergmann
2017-07-14 13:48 ` Leon Romanovsky
2017-07-25 1:48 ` [PATCH 00/22] gcc-7 -Wformat-* warnings Martin K. Petersen
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