drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c:154:19: warning: '%s' directive output may be truncated writing up to 19 bytes into a region of size between 13 and 24
From: kernel test robot
Date: Thu Jan 25 2024 - 19:49:43 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: ecb1b8288dc7ccbdcb3b9df005fa1c0e0c0388a7
commit: 6a39e62abbafd1d58d1722f40c7d26ef379c6a2f lib: string.h: detect intra-object overflow in fortified string functions
date: 3 years, 1 month ago
config: x86_64-randconfig-012-20240106 (https://download.01.org/0day-ci/archive/20240126/202401260858.jZN6vD1k-lkp@xxxxxxxxx/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240126/202401260858.jZN6vD1k-lkp@xxxxxxxxx/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202401260858.jZN6vD1k-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c: In function 'bnx2x_fill_fw_str':
>> drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c:154:19: warning: '%s' directive output may be truncated writing up to 19 bytes into a region of size between 13 and 24 [-Wformat-truncation=]
154 | "bc %d.%d.%d%s%s",
| ^~
......
158 | ((phy_fw_ver[0] != '\0') ? " phy " : ""), phy_fw_ver);
| ~~~~~~~~~~
drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c:153:3: note: 'snprintf' output between 9 and 39 bytes into a destination of size 32
153 | snprintf(buf + strlen(bp->fw_ver), 32 - strlen(bp->fw_ver),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
154 | "bc %d.%d.%d%s%s",
| ~~~~~~~~~~~~~~~~~~
155 | (bp->common.bc_ver & 0xff0000) >> 16,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
156 | (bp->common.bc_ver & 0xff00) >> 8,
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
157 | (bp->common.bc_ver & 0xff),
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~
158 | ((phy_fw_ver[0] != '\0') ? " phy " : ""), phy_fw_ver);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
vim +154 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
b3b83c3f3c640b drivers/net/bnx2x/bnx2x_cmn.c Dmitry Kravkov 2011-05-04 135
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 136 /**
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 137 * bnx2x_fill_fw_str - Fill buffer with FW version string.
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 138 *
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 139 * @bp: driver handle
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 140 * @buf: character buffer to fill with the fw name
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 141 * @buf_len: length of the above buffer
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 142 *
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 143 */
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 144 void bnx2x_fill_fw_str(struct bnx2x *bp, char *buf, size_t buf_len)
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 145 {
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 146 if (IS_PF(bp)) {
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 147 u8 phy_fw_ver[PHY_FW_VER_LEN];
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 148
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 149 phy_fw_ver[0] = '\0';
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 150 bnx2x_get_ext_phy_fw_version(&bp->link_params,
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 151 phy_fw_ver, PHY_FW_VER_LEN);
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 152 strlcpy(buf, bp->fw_ver, buf_len);
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 153 snprintf(buf + strlen(bp->fw_ver), 32 - strlen(bp->fw_ver),
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 @154 "bc %d.%d.%d%s%s",
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 155 (bp->common.bc_ver & 0xff0000) >> 16,
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 156 (bp->common.bc_ver & 0xff00) >> 8,
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 157 (bp->common.bc_ver & 0xff),
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 158 ((phy_fw_ver[0] != '\0') ? " phy " : ""), phy_fw_ver);
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 159 } else {
6411280ac94db9 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-07 160 bnx2x_vf_fill_fw_str(bp, buf, buf_len);
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 161 }
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 162 }
8ca5e17e58c953 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c Ariel Elior 2013-01-01 163
:::::: The code at line 154 was first introduced by commit
:::::: 8ca5e17e58c953b9a9dbd4974c554b25c6d70b1a bnx2x: Support of PF driver of a VF acquire request
:::::: TO: Ariel Elior <ariele@xxxxxxxxxxxx>
:::::: CC: David S. Miller <davem@xxxxxxxxxxxxx>
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