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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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