drivers/vdpa/pds/debugfs.c:266:49: warning: '%02d' directive output may be truncated writing between 2 and 11 bytes into a region of size 6
From: kernel test robot
Date: Tue Dec 03 2024 - 04:55:33 EST
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: cdd30ebb1b9f36159d66f088b61aee264e649d7a
commit: 3f301dc292eb122eff61b8b2906e519154b0327f LoongArch: Replace -ffreestanding with finer-grained -fno-builtin's
date: 1 year, 3 months ago
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20241203/202412031726.c8OLuPOm-lkp@xxxxxxxxx/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241203/202412031726.c8OLuPOm-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/202412031726.c8OLuPOm-lkp@xxxxxxxxx/
All warnings (new ones prefixed by >>):
drivers/vdpa/pds/debugfs.c: In function 'pds_vdpa_debugfs_add_vdpadev':
>> drivers/vdpa/pds/debugfs.c:266:49: warning: '%02d' directive output may be truncated writing between 2 and 11 bytes into a region of size 6 [-Wformat-truncation=]
266 | snprintf(name, sizeof(name), "vq%02d", i);
| ^~~~
drivers/vdpa/pds/debugfs.c:266:46: note: directive argument in the range [-2147483641, 254]
266 | snprintf(name, sizeof(name), "vq%02d", i);
| ^~~~~~~~
drivers/vdpa/pds/debugfs.c:266:17: note: 'snprintf' output between 5 and 14 bytes into a destination of size 8
266 | snprintf(name, sizeof(name), "vq%02d", i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
drivers/net/wireless/intersil/p54/fwio.c: In function 'p54_parse_firmware':
>> drivers/net/wireless/intersil/p54/fwio.c:128:34: warning: '%s' directive output may be truncated writing up to 39 bytes into a region of size 32 [-Wformat-truncation=]
128 | "%s - %x.%x", fw_version,
| ^~
drivers/net/wireless/intersil/p54/fwio.c:128:33: note: directive argument in the range [0, 16777215]
128 | "%s - %x.%x", fw_version,
| ^~~~~~~~~~~~
drivers/net/wireless/intersil/p54/fwio.c:128:33: note: directive argument in the range [0, 255]
drivers/net/wireless/intersil/p54/fwio.c:127:17: note: 'snprintf' output between 7 and 52 bytes into a destination of size 32
127 | snprintf(dev->wiphy->fw_version, sizeof(dev->wiphy->fw_version),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
128 | "%s - %x.%x", fw_version,
| ~~~~~~~~~~~~~~~~~~~~~~~~~
129 | priv->fw_var >> 8, priv->fw_var & 0xff);
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
drivers/net/ethernet/marvell/octeontx2/af/cgx.c: In function 'cgx_lmac_init':
>> drivers/net/ethernet/marvell/octeontx2/af/cgx.c:1662:49: warning: '%d' directive writing between 1 and 11 bytes into a region of size between 4 and 6 [-Wformat-overflow=]
1662 | sprintf(lmac->name, "cgx_fwi_%d_%d", cgx->cgx_id, i);
| ^~
drivers/net/ethernet/marvell/octeontx2/af/cgx.c:1662:37: note: directive argument in the range [-2147483641, 254]
1662 | sprintf(lmac->name, "cgx_fwi_%d_%d", cgx->cgx_id, i);
| ^~~~~~~~~~~~~~~
drivers/net/ethernet/marvell/octeontx2/af/cgx.c:1662:17: note: 'sprintf' output between 12 and 24 bytes into a destination of size 16
1662 | sprintf(lmac->name, "cgx_fwi_%d_%d", cgx->cgx_id, i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
--
drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c: In function 'rvu_dbg_mcs_init':
>> drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c:533:36: warning: '%d' directive writing between 1 and 11 bytes into a region of size 7 [-Wformat-overflow=]
533 | sprintf(dname, "mcs%d", i);
| ^~
drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c:533:32: note: directive argument in the range [-2147483641, 2147483646]
533 | sprintf(dname, "mcs%d", i);
| ^~~~~~~
drivers/net/ethernet/marvell/octeontx2/af/rvu_debugfs.c:533:17: note: 'sprintf' output between 5 and 15 bytes into a destination of size 10
533 | sprintf(dname, "mcs%d", i);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~
vim +266 drivers/vdpa/pds/debugfs.c
151cc834f3ddaf Shannon Nelson 2023-05-19 256
151cc834f3ddaf Shannon Nelson 2023-05-19 257 void pds_vdpa_debugfs_add_vdpadev(struct pds_vdpa_aux *vdpa_aux)
151cc834f3ddaf Shannon Nelson 2023-05-19 258 {
151cc834f3ddaf Shannon Nelson 2023-05-19 259 int i;
151cc834f3ddaf Shannon Nelson 2023-05-19 260
151cc834f3ddaf Shannon Nelson 2023-05-19 261 debugfs_create_file("config", 0400, vdpa_aux->dentry, vdpa_aux->pdsv, &config_fops);
151cc834f3ddaf Shannon Nelson 2023-05-19 262
151cc834f3ddaf Shannon Nelson 2023-05-19 263 for (i = 0; i < vdpa_aux->pdsv->num_vqs; i++) {
151cc834f3ddaf Shannon Nelson 2023-05-19 264 char name[8];
151cc834f3ddaf Shannon Nelson 2023-05-19 265
151cc834f3ddaf Shannon Nelson 2023-05-19 @266 snprintf(name, sizeof(name), "vq%02d", i);
151cc834f3ddaf Shannon Nelson 2023-05-19 267 debugfs_create_file(name, 0400, vdpa_aux->dentry,
151cc834f3ddaf Shannon Nelson 2023-05-19 268 &vdpa_aux->pdsv->vqs[i], &vq_fops);
151cc834f3ddaf Shannon Nelson 2023-05-19 269 }
151cc834f3ddaf Shannon Nelson 2023-05-19 270 }
151cc834f3ddaf Shannon Nelson 2023-05-19 271
:::::: The code at line 266 was first introduced by commit
:::::: 151cc834f3ddafec869269fe48036460d920d08a pds_vdpa: add support for vdpa and vdpamgmt interfaces
:::::: TO: Shannon Nelson <shannon.nelson@xxxxxxx>
:::::: CC: Michael S. Tsirkin <mst@xxxxxxxxxx>
--
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