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Message-ID: <BL0PR11MB312284B4838C986D8B96ECA8BDD3A@BL0PR11MB3122.namprd11.prod.outlook.com>
Date: Thu, 12 Oct 2023 10:12:24 +0000
From: "Pucha, HimasekharX Reddy" <himasekharx.reddy.pucha@...el.com>
To: "Brandeburg, Jesse" <jesse.brandeburg@...el.com>,
"intel-wired-lan@...ts.osuosl.org" <intel-wired-lan@...ts.osuosl.org>
CC: "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "Lobakin, Aleksander"
<aleksander.lobakin@...el.com>, Christophe JAILLET
<christophe.jaillet@...adoo.fr>, "Brandeburg, Jesse"
<jesse.brandeburg@...el.com>, "Kitszel, Przemyslaw"
<przemyslaw.kitszel@...el.com>
Subject: RE: [Intel-wired-lan] [PATCH iwl-next v1 1/2] intel: fix string
truncation warnings
> -----Original Message-----
> From: Intel-wired-lan <intel-wired-lan-bounces@...osl.org> On Behalf Of Jesse Brandeburg
> Sent: Wednesday, October 4, 2023 12:06 AM
> To: intel-wired-lan@...ts.osuosl.org
> Cc: netdev@...r.kernel.org; Lobakin, Aleksander <aleksander.lobakin@...el.com>; Christophe JAILLET <christophe.jaillet@...adoo.fr>; Brandeburg, Jesse <jesse.brandeburg@...el.com>; Kitszel, Przemyslaw <przemyslaw.kitszel@...el.com>
> Subject: [Intel-wired-lan] [PATCH iwl-next v1 1/2] intel: fix string truncation warnings
>
> Fix -Wformat-truncated warnings to complete the intel directories' W=1
> clean efforts. The W=1 recently got enhanced with a few new flags and
> this brought up some new warnings.
>
> Switch to using kasprintf() when possible so we always allocate the
> right length strings.
>
> summary of warnings:
> drivers/net/ethernet/intel/iavf/iavf_virtchnl.c:1425:60: warning: ‘%s’ directive output may be truncated writing 4 bytes into a region of size between 1 and 11 [-Wformat-truncation=]
> drivers/net/ethernet/intel/iavf/iavf_virtchnl.c:1425:17: note: ‘snprintf’ output between 7 and 17 bytes into a destination of size 13
> drivers/net/ethernet/intel/ice/ice_ptp.c:43:27: warning: ‘%s’ directive output may be truncated writing up to 479 bytes into a region of size 64 [-Wformat-truncation=]
> drivers/net/ethernet/intel/ice/ice_ptp.c:42:17: note: ‘snprintf’ output between 1 and 480 bytes into a destination of size 64
> drivers/net/ethernet/intel/igb/igb_main.c:3092:53: warning: ‘%d’ directive output may be truncated writing between 1 and 5 bytes into a region of size between 1 and 13 [-Wformat-truncation=]
> drivers/net/ethernet/intel/igb/igb_main.c:3092:34: note: directive argument in the range [0, 65535]
> drivers/net/ethernet/intel/igb/igb_main.c:3092:34: note: directive argument in the range [0, 65535]
> drivers/net/ethernet/intel/igb/igb_main.c:3090:25: note: ‘snprintf’ output between 23 and 43 bytes into a destination of size 32
>
> Suggested-by: Alexander Lobakin <aleksander.lobakin@...el.com>
> Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@...el.com>
> ---
> I thought this was fine to go to -next since there isn't really urgency
> to drive this change.
> ---
> /linux/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c: In function ‘iavf_virtchnl_completion’:
> /linux/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c:1425:60: warning: ‘%s’ directive output may be truncated writing 4 bytes into a region of size between 1 and 11 [-Wformat-truncation=]
> 1425 | snprintf(speed, IAVF_MAX_SPEED_STRLEN, "%d %s",
> | ^~
> 1426 | link_speed_mbps, "Mbps");
> | ~~~~~~
> /linux/drivers/net/ethernet/intel/iavf/iavf_virtchnl.c:1425:17: note: ‘snprintf’ output between 7 and 17 bytes into a destination of size 13
> 1425 | snprintf(speed, IAVF_MAX_SPEED_STRLEN, "%d %s",
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 1426 | link_speed_mbps, "Mbps");
> | ~~~~~~~~~~~~~~~~~~~~~~~~
> /linux/drivers/net/ethernet/intel/ice/ice_ptp.c: In function ‘ice_get_sma_config_e810t’:
> /linux/drivers/net/ethernet/intel/ice/ice_ptp.c:43:27: warning: ‘%s’ directive output may be truncated writing up to 479 bytes into a region of size 64 [-Wformat-truncation=]
> 43 | "%s", ice_pin_desc_e810t[i].name);
> | ^~
> /linux/drivers/net/ethernet/intel/ice/ice_ptp.c:42:17: note: ‘snprintf’ output between 1 and 480 bytes into a destination of size 64
> 42 | snprintf(ptp_pins[i].name, sizeof(ptp_pins[i].name),
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 43 | "%s", ice_pin_desc_e810t[i].name);
> | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> /linux/drivers/net/ethernet/intel/igb/igb_main.c: In function ‘igb_set_fw_version’:
> /linux/drivers/net/ethernet/intel/igb/igb_main.c:3092:53: warning: ‘%d’ directive output may be truncated writing between 1 and 5 bytes into a region of size between 1 and 13 [-Wformat-truncation=]
> 3092 | "%d.%d, 0x%08x, %d.%d.%d",
> | ^~
> /linux/drivers/net/ethernet/intel/igb/igb_main.c:3092:34: note: directive argument in the range [0, 65535]
> 3092 | "%d.%d, 0x%08x, %d.%d.%d",
> | ^~~~~~~~~~~~~~~~~~~~~~~~~
> /linux/drivers/net/ethernet/intel/igb/igb_main.c:3092:34: note: directive argument in the range [0, 65535]
> /linux/drivers/net/ethernet/intel/igb/igb_main.c:3090:25: note: ‘snprintf’ output between 23 and 43 bytes into a destination of size 32
> 3090 | snprintf(adapter->fw_version,
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 3091 | sizeof(adapter->fw_version),
> | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 3092 | "%d.%d, 0x%08x, %d.%d.%d",
> | ~~~~~~~~~~~~~~~~~~~~~~~~~~
> 3093 | fw.eep_major, fw.eep_minor, fw.etrack_id,
> | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 3094 | fw.or_major, fw.or_build, fw.or_patch);
> | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> ---
> .../net/ethernet/intel/iavf/iavf_ethtool.c | 4 +-
> .../net/ethernet/intel/iavf/iavf_virtchnl.c | 22 ++++-------
> drivers/net/ethernet/intel/ice/ice_ptp.c | 4 +-
> drivers/net/ethernet/intel/igb/igb_main.c | 37 +++++++++----------
> 4 files changed, 30 insertions(+), 37 deletions(-)
>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com> (A Contingent worker at Intel)
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