diff options
| author | Jesse Brandeburg <jesse.brandeburg@intel.com> | 2023-10-17 12:04:03 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-10-18 18:10:16 -0700 |
| commit | 1978d3ead82c8e39d739dd4e19b1ea7bf923dfb4 (patch) | |
| tree | 90fe27ccbec62878f35c13011392305723a127ab /drivers/net/ethernet/intel/igb | |
| parent | 50ee052b396f8c60fea6deb826f820aebff372fa (diff) | |
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@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20231017190411.2199743-2-jacob.e.keller@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/ethernet/intel/igb')
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 2ac9dffd0bf8..fdadf3e84f59 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -3069,6 +3069,7 @@ void igb_set_fw_version(struct igb_adapter *adapter) { struct e1000_hw *hw = &adapter->hw; struct e1000_fw_version fw; + char *lbuf; igb_get_fw_version(hw, &fw); @@ -3076,36 +3077,34 @@ void igb_set_fw_version(struct igb_adapter *adapter) case e1000_i210: case e1000_i211: if (!(igb_get_flash_presence_i210(hw))) { - snprintf(adapter->fw_version, - sizeof(adapter->fw_version), - "%2d.%2d-%d", - fw.invm_major, fw.invm_minor, - fw.invm_img_type); + lbuf = kasprintf(GFP_KERNEL, "%2d.%2d-%d", + fw.invm_major, fw.invm_minor, + fw.invm_img_type); break; } fallthrough; default: - /* if option is rom valid, display its version too */ + /* if option rom is valid, display its version too */ if (fw.or_valid) { - snprintf(adapter->fw_version, - sizeof(adapter->fw_version), - "%d.%d, 0x%08x, %d.%d.%d", - fw.eep_major, fw.eep_minor, fw.etrack_id, - fw.or_major, fw.or_build, fw.or_patch); + lbuf = kasprintf(GFP_KERNEL, "%d.%d, 0x%08x, %d.%d.%d", + fw.eep_major, fw.eep_minor, + fw.etrack_id, fw.or_major, fw.or_build, + fw.or_patch); /* no option rom */ } else if (fw.etrack_id != 0X0000) { - snprintf(adapter->fw_version, - sizeof(adapter->fw_version), - "%d.%d, 0x%08x", - fw.eep_major, fw.eep_minor, fw.etrack_id); + lbuf = kasprintf(GFP_KERNEL, "%d.%d, 0x%08x", + fw.eep_major, fw.eep_minor, + fw.etrack_id); } else { - snprintf(adapter->fw_version, - sizeof(adapter->fw_version), - "%d.%d.%d", - fw.eep_major, fw.eep_minor, fw.eep_build); + lbuf = kasprintf(GFP_KERNEL, "%d.%d.%d", fw.eep_major, + fw.eep_minor, fw.eep_build); } break; } + + /* the truncate happens here if it doesn't fit */ + strscpy(adapter->fw_version, lbuf, sizeof(adapter->fw_version)); + kfree(lbuf); } /** |