Re: [PATCH v2] Fix buffer overflow in hinic_devlink.c:hinic_flash_fw

From: kernel test robot
Date: Mon Jun 27 2022 - 12:15:51 EST

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Hi HighW4y2H3ll,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on horms-ipvs/master]
[also build test WARNING on linus/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url: https://github.com/intel-lab-lkp/linux/commits/HighW4y2H3ll/Fix-buffer-overflow-in-hinic_devlink-c-hinic_flash_fw/20220617-130659
base: https://git.kernel.org/pub/scm/linux/kernel/git/horms/ipvs.git master
config: arm64-randconfig-r022-20220627 (https://download.01.org/0day-ci/archive/20220628/202206280043.B60ScXNe-lkp@xxxxxxxxx/config)
compiler: aarch64-linux-gcc (GCC) 11.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/intel-lab-lkp/linux/commit/821efd063fed15fd0bab30b29df0af61d5ba4cac
git remote add linux-review https://github.com/intel-lab-lkp/linux
git fetch --no-tags linux-review HighW4y2H3ll/Fix-buffer-overflow-in-hinic_devlink-c-hinic_flash_fw/20220617-130659
git checkout 821efd063fed15fd0bab30b29df0af61d5ba4cac
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash drivers/net/ethernet/huawei/hinic/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

drivers/net/ethernet/huawei/hinic/hinic_devlink.c: In function 'hinic_flash_fw':
>> drivers/net/ethernet/huawei/hinic/hinic_devlink.c:176:25: warning: 'memset' used with length equal to number of elements without multiplication by element size [-Wmemset-elt-size]
176 | memset(fw_update_msg->data, 0, MAX_FW_FRAGMENT_LEN);
| ^~~~~~

vim +/memset +176 drivers/net/ethernet/huawei/hinic/hinic_devlink.c

5e126e7c4e5275 Luo bin 2020-07-15 123
5e126e7c4e5275 Luo bin 2020-07-15 124 static int hinic_flash_fw(struct hinic_devlink_priv *priv, const u8 *data,
5e126e7c4e5275 Luo bin 2020-07-15 125 struct host_image_st *host_image)
5e126e7c4e5275 Luo bin 2020-07-15 126 {
5e126e7c4e5275 Luo bin 2020-07-15 127 u32 section_remain_send_len, send_fragment_len, send_pos, up_total_len;
5e126e7c4e5275 Luo bin 2020-07-15 128 struct hinic_cmd_update_fw *fw_update_msg = NULL;
5e126e7c4e5275 Luo bin 2020-07-15 129 u32 section_type, section_crc, section_version;
5e126e7c4e5275 Luo bin 2020-07-15 130 u32 i, len, section_len, section_offset;
5e126e7c4e5275 Luo bin 2020-07-15 131 u16 out_size = sizeof(*fw_update_msg);
5e126e7c4e5275 Luo bin 2020-07-15 132 int total_len_flag = 0;
5e126e7c4e5275 Luo bin 2020-07-15 133 int err;
5e126e7c4e5275 Luo bin 2020-07-15 134
5e126e7c4e5275 Luo bin 2020-07-15 135 fw_update_msg = kzalloc(sizeof(*fw_update_msg), GFP_KERNEL);
5e126e7c4e5275 Luo bin 2020-07-15 136 if (!fw_update_msg)
5e126e7c4e5275 Luo bin 2020-07-15 137 return -ENOMEM;
5e126e7c4e5275 Luo bin 2020-07-15 138
5e126e7c4e5275 Luo bin 2020-07-15 139 up_total_len = host_image->image_info.up_total_len;
5e126e7c4e5275 Luo bin 2020-07-15 140
5e126e7c4e5275 Luo bin 2020-07-15 141 for (i = 0; i < host_image->section_type_num; i++) {
5e126e7c4e5275 Luo bin 2020-07-15 142 len = host_image->image_section_info[i].fw_section_len;
5e126e7c4e5275 Luo bin 2020-07-15 143 if (host_image->image_section_info[i].fw_section_type ==
5e126e7c4e5275 Luo bin 2020-07-15 144 UP_FW_UPDATE_BOOT) {
5e126e7c4e5275 Luo bin 2020-07-15 145 up_total_len = up_total_len - len;
5e126e7c4e5275 Luo bin 2020-07-15 146 break;
5e126e7c4e5275 Luo bin 2020-07-15 147 }
5e126e7c4e5275 Luo bin 2020-07-15 148 }
5e126e7c4e5275 Luo bin 2020-07-15 149
5e126e7c4e5275 Luo bin 2020-07-15 150 for (i = 0; i < host_image->section_type_num; i++) {
5e126e7c4e5275 Luo bin 2020-07-15 151 section_len =
5e126e7c4e5275 Luo bin 2020-07-15 152 host_image->image_section_info[i].fw_section_len;
5e126e7c4e5275 Luo bin 2020-07-15 153 section_offset =
5e126e7c4e5275 Luo bin 2020-07-15 154 host_image->image_section_info[i].fw_section_offset;
5e126e7c4e5275 Luo bin 2020-07-15 155 section_remain_send_len = section_len;
5e126e7c4e5275 Luo bin 2020-07-15 156 section_type =
5e126e7c4e5275 Luo bin 2020-07-15 157 host_image->image_section_info[i].fw_section_type;
5e126e7c4e5275 Luo bin 2020-07-15 158 section_crc = host_image->image_section_info[i].fw_section_crc;
5e126e7c4e5275 Luo bin 2020-07-15 159 section_version =
5e126e7c4e5275 Luo bin 2020-07-15 160 host_image->image_section_info[i].fw_section_version;
5e126e7c4e5275 Luo bin 2020-07-15 161
5e126e7c4e5275 Luo bin 2020-07-15 162 if (section_type == UP_FW_UPDATE_BOOT)
5e126e7c4e5275 Luo bin 2020-07-15 163 continue;
5e126e7c4e5275 Luo bin 2020-07-15 164
5e126e7c4e5275 Luo bin 2020-07-15 165 send_fragment_len = 0;
5e126e7c4e5275 Luo bin 2020-07-15 166 send_pos = 0;
5e126e7c4e5275 Luo bin 2020-07-15 167
5e126e7c4e5275 Luo bin 2020-07-15 168 while (section_remain_send_len > 0) {
5e126e7c4e5275 Luo bin 2020-07-15 169 if (!total_len_flag) {
5e126e7c4e5275 Luo bin 2020-07-15 170 fw_update_msg->total_len = up_total_len;
5e126e7c4e5275 Luo bin 2020-07-15 171 total_len_flag = 1;
5e126e7c4e5275 Luo bin 2020-07-15 172 } else {
5e126e7c4e5275 Luo bin 2020-07-15 173 fw_update_msg->total_len = 0;
5e126e7c4e5275 Luo bin 2020-07-15 174 }
5e126e7c4e5275 Luo bin 2020-07-15 175
5e126e7c4e5275 Luo bin 2020-07-15 @176 memset(fw_update_msg->data, 0, MAX_FW_FRAGMENT_LEN);
5e126e7c4e5275 Luo bin 2020-07-15 177
5e126e7c4e5275 Luo bin 2020-07-15 178 fw_update_msg->ctl_info.SF =
5e126e7c4e5275 Luo bin 2020-07-15 179 (section_remain_send_len == section_len) ?
5e126e7c4e5275 Luo bin 2020-07-15 180 true : false;
5e126e7c4e5275 Luo bin 2020-07-15 181 fw_update_msg->section_info.FW_section_CRC = section_crc;
5e126e7c4e5275 Luo bin 2020-07-15 182 fw_update_msg->fw_section_version = section_version;
5e126e7c4e5275 Luo bin 2020-07-15 183 fw_update_msg->ctl_info.flag = UP_TYPE_A;
5e126e7c4e5275 Luo bin 2020-07-15 184
5e126e7c4e5275 Luo bin 2020-07-15 185 if (section_type <= UP_FW_UPDATE_UP_DATA_B) {
5e126e7c4e5275 Luo bin 2020-07-15 186 fw_update_msg->section_info.FW_section_type =
5e126e7c4e5275 Luo bin 2020-07-15 187 (section_type % 2) ?
5e126e7c4e5275 Luo bin 2020-07-15 188 UP_FW_UPDATE_UP_DATA :
5e126e7c4e5275 Luo bin 2020-07-15 189 UP_FW_UPDATE_UP_TEXT;
5e126e7c4e5275 Luo bin 2020-07-15 190
5e126e7c4e5275 Luo bin 2020-07-15 191 fw_update_msg->ctl_info.flag = UP_TYPE_B;
5e126e7c4e5275 Luo bin 2020-07-15 192 if (section_type <= UP_FW_UPDATE_UP_DATA_A)
5e126e7c4e5275 Luo bin 2020-07-15 193 fw_update_msg->ctl_info.flag = UP_TYPE_A;
5e126e7c4e5275 Luo bin 2020-07-15 194 } else {
5e126e7c4e5275 Luo bin 2020-07-15 195 fw_update_msg->section_info.FW_section_type =
5e126e7c4e5275 Luo bin 2020-07-15 196 section_type - 0x2;
5e126e7c4e5275 Luo bin 2020-07-15 197 }
5e126e7c4e5275 Luo bin 2020-07-15 198
5e126e7c4e5275 Luo bin 2020-07-15 199 fw_update_msg->setion_total_len = section_len;
5e126e7c4e5275 Luo bin 2020-07-15 200 fw_update_msg->section_offset = send_pos;
5e126e7c4e5275 Luo bin 2020-07-15 201
5e126e7c4e5275 Luo bin 2020-07-15 202 if (section_remain_send_len <= MAX_FW_FRAGMENT_LEN) {
5e126e7c4e5275 Luo bin 2020-07-15 203 fw_update_msg->ctl_info.SL = true;
5e126e7c4e5275 Luo bin 2020-07-15 204 fw_update_msg->ctl_info.fragment_len =
5e126e7c4e5275 Luo bin 2020-07-15 205 section_remain_send_len;
5e126e7c4e5275 Luo bin 2020-07-15 206 send_fragment_len += section_remain_send_len;
5e126e7c4e5275 Luo bin 2020-07-15 207 } else {
5e126e7c4e5275 Luo bin 2020-07-15 208 fw_update_msg->ctl_info.SL = false;
5e126e7c4e5275 Luo bin 2020-07-15 209 fw_update_msg->ctl_info.fragment_len =
5e126e7c4e5275 Luo bin 2020-07-15 210 MAX_FW_FRAGMENT_LEN;
5e126e7c4e5275 Luo bin 2020-07-15 211 send_fragment_len += MAX_FW_FRAGMENT_LEN;
5e126e7c4e5275 Luo bin 2020-07-15 212 }
5e126e7c4e5275 Luo bin 2020-07-15 213
5e126e7c4e5275 Luo bin 2020-07-15 214 memcpy(fw_update_msg->data,
5e126e7c4e5275 Luo bin 2020-07-15 215 data + UPDATEFW_IMAGE_HEAD_SIZE +
5e126e7c4e5275 Luo bin 2020-07-15 216 section_offset + send_pos,
5e126e7c4e5275 Luo bin 2020-07-15 217 fw_update_msg->ctl_info.fragment_len);
5e126e7c4e5275 Luo bin 2020-07-15 218
5e126e7c4e5275 Luo bin 2020-07-15 219 err = hinic_port_msg_cmd(priv->hwdev,
5e126e7c4e5275 Luo bin 2020-07-15 220 HINIC_PORT_CMD_UPDATE_FW,
5e126e7c4e5275 Luo bin 2020-07-15 221 fw_update_msg,
5e126e7c4e5275 Luo bin 2020-07-15 222 sizeof(*fw_update_msg),
5e126e7c4e5275 Luo bin 2020-07-15 223 fw_update_msg, &out_size);
5e126e7c4e5275 Luo bin 2020-07-15 224 if (err || !out_size || fw_update_msg->status) {
5e126e7c4e5275 Luo bin 2020-07-15 225 dev_err(&priv->hwdev->hwif->pdev->dev, "Failed to update firmware, err: %d, status: 0x%x, out size: 0x%x\n",
5e126e7c4e5275 Luo bin 2020-07-15 226 err, fw_update_msg->status, out_size);
5e126e7c4e5275 Luo bin 2020-07-15 227 err = fw_update_msg->status ?
5e126e7c4e5275 Luo bin 2020-07-15 228 fw_update_msg->status : -EIO;
5e126e7c4e5275 Luo bin 2020-07-15 229 kfree(fw_update_msg);
5e126e7c4e5275 Luo bin 2020-07-15 230 return err;
5e126e7c4e5275 Luo bin 2020-07-15 231 }
5e126e7c4e5275 Luo bin 2020-07-15 232
5e126e7c4e5275 Luo bin 2020-07-15 233 send_pos = send_fragment_len;
5e126e7c4e5275 Luo bin 2020-07-15 234 section_remain_send_len = section_len -
5e126e7c4e5275 Luo bin 2020-07-15 235 send_fragment_len;
5e126e7c4e5275 Luo bin 2020-07-15 236 }
5e126e7c4e5275 Luo bin 2020-07-15 237 }
5e126e7c4e5275 Luo bin 2020-07-15 238
5e126e7c4e5275 Luo bin 2020-07-15 239 kfree(fw_update_msg);
5e126e7c4e5275 Luo bin 2020-07-15 240
5e126e7c4e5275 Luo bin 2020-07-15 241 return 0;
5e126e7c4e5275 Luo bin 2020-07-15 242 }
5e126e7c4e5275 Luo bin 2020-07-15 243

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0-DAY CI Kernel Test Service
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Next in thread: Zhenghao Hu: "Re: [PATCH v2] Fix buffer overflow in hinic_devlink.c:hinic_flash_fw"
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