tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: d25ee88530253138d0b20d43511ca5acbda4e9f7 commit: 602670289b69b2fded3a0b2240c4877e3a015ac6 [1562/1734] fortify: Detect struct member overflows in memcpy() at compile-time config: i386-allmodconfig (https://download.01.org/0day-ci/archive/20220126/202201261137.2CfyPBXl-lk...) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commi... git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout 602670289b69b2fded3a0b2240c4877e3a015ac6 # save the config file to linux build tree mkdir build_dir make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash drivers/acpi/apei/ drivers/hid/ If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) drivers/hid/hid-hyperv.c:202:40: sparse: sparse: incorrect type in assignment (different base types) @@ expected unsigned int [usertype] report_desc_size @@ got restricted __le16 [usertype] wDescriptorLength @@ drivers/hid/hid-hyperv.c:202:40: sparse: expected unsigned int [usertype] report_desc_size drivers/hid/hid-hyperv.c:202:40: sparse: got restricted __le16 [usertype] wDescriptorLength -- drivers/acpi/apei/erst.c:272:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *src @@ got void [noderef] __iomem * @@ drivers/acpi/apei/erst.c:272:13: sparse: expected void *src drivers/acpi/apei/erst.c:272:13: sparse: got void [noderef] __iomem * drivers/acpi/apei/erst.c:275:13: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void *dst @@ got void [noderef] __iomem * @@ drivers/acpi/apei/erst.c:275:13: sparse: expected void *dst drivers/acpi/apei/erst.c:275:13: sparse: got void [noderef] __iomem * drivers/acpi/apei/erst.c:277:25: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *src @@ drivers/acpi/apei/erst.c:277:25: sparse: expected void volatile [noderef] __iomem *addr drivers/acpi/apei/erst.c:277:25: sparse: got void *src drivers/acpi/apei/erst.c:283:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *src @@ drivers/acpi/apei/erst.c:283:17: sparse: expected void volatile [noderef] __iomem *addr drivers/acpi/apei/erst.c:283:17: sparse: got void *src drivers/acpi/apei/erst.c:284:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] __iomem *addr @@ got void *dst @@ drivers/acpi/apei/erst.c:284:17: sparse: expected void volatile [noderef] __iomem *addr drivers/acpi/apei/erst.c:284:17: sparse: got void *dst drivers/acpi/apei/erst.c:792:9: sparse: expected void const * drivers/acpi/apei/erst.c:792:9: sparse: got void [noderef] __iomem *static [toplevel] vaddr drivers/acpi/apei/erst.c:792:9: sparse: expected void const * drivers/acpi/apei/erst.c:792:9: sparse: got void [noderef] __iomem *static [toplevel] vaddr drivers/acpi/apei/erst.c:792:9: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void * @@ got void [noderef] __iomem *static [toplevel] vaddr @@ drivers/acpi/apei/erst.c:792:9: sparse: expected void * drivers/acpi/apei/erst.c:792:9: sparse: got void [noderef] __iomem *static [toplevel] vaddr drivers/acpi/apei/erst.c:793:20: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct cper_record_header *rcd_erange @@ got void [noderef] __iomem *static [toplevel] vaddr @@ drivers/acpi/apei/erst.c:793:20: sparse: expected struct cper_record_header *rcd_erange drivers/acpi/apei/erst.c:793:20: sparse: got void [noderef] __iomem *static [toplevel] vaddr drivers/acpi/apei/erst.c:830:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct cper_record_header *rcd_tmp @@ got void [noderef] __iomem * @@ drivers/acpi/apei/erst.c:830:17: sparse: expected struct cper_record_header *rcd_tmp drivers/acpi/apei/erst.c:830:17: sparse: got void [noderef] __iomem * vim +218 drivers/hid/hid-hyperv.c b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 180 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 181 static void mousevsc_on_receive_device_info(struct mousevsc_dev *input_device, b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 182 struct synthhid_device_info *device_info) b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 183 { b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 184 int ret = 0; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 185 struct hid_descriptor *desc; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 186 struct mousevsc_prt_msg ack; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 187 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 188 input_device->dev_info_status = -ENOMEM; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 189 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 190 input_device->hid_dev_info = device_info->hid_dev_info; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 191 desc = &device_info->hid_descriptor; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 192 if (desc->bLength == 0) b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 193 goto cleanup; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 194 af13f9ed6f9aa68 Dexuan Cui 2019-11-19 195 /* The pointer is not NULL when we resume from hibernation */ af13f9ed6f9aa68 Dexuan Cui 2019-11-19 196 kfree(input_device->hid_desc); a4a23f6d68ad2c8 Thomas Meyer 2013-06-01 197 input_device->hid_desc = kmemdup(desc, desc->bLength, GFP_ATOMIC); b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 198 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 199 if (!input_device->hid_desc) b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 200 goto cleanup; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 201 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 @202 input_device->report_desc_size = desc->desc[0].wDescriptorLength; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 203 if (input_device->report_desc_size == 0) { b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 204 input_device->dev_info_status = -EINVAL; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 205 goto cleanup; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 206 } b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 207 af13f9ed6f9aa68 Dexuan Cui 2019-11-19 208 /* The pointer is not NULL when we resume from hibernation */ af13f9ed6f9aa68 Dexuan Cui 2019-11-19 209 kfree(input_device->report_desc); b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 210 input_device->report_desc = kzalloc(input_device->report_desc_size, b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 211 GFP_ATOMIC); b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 212 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 213 if (!input_device->report_desc) { b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 214 input_device->dev_info_status = -ENOMEM; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 215 goto cleanup; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 216 } b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 217 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 @218 memcpy(input_device->report_desc, b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 219 ((unsigned char *)desc) + desc->bLength, b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 220 desc->desc[0].wDescriptorLength); b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 221 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 222 /* Send the ack */ b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 223 memset(&ack, 0, sizeof(struct mousevsc_prt_msg)); b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 224 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 225 ack.type = PIPE_MESSAGE_DATA; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 226 ack.size = sizeof(struct synthhid_device_info_ack); b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 227 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 228 ack.ack.header.type = SYNTH_HID_INITIAL_DEVICE_INFO_ACK; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 229 ack.ack.header.size = 1; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 230 ack.ack.reserved = 0; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 231 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 232 ret = vmbus_sendpacket(input_device->device->channel, b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 233 &ack, b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 234 sizeof(struct pipe_prt_msg) - sizeof(unsigned char) + b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 235 sizeof(struct synthhid_device_info_ack), b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 236 (unsigned long)&ack, b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 237 VM_PKT_DATA_INBAND, b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 238 VMBUS_DATA_PACKET_FLAG_COMPLETION_REQUESTED); b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 239 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 240 if (!ret) b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 241 input_device->dev_info_status = 0; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 242 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 243 cleanup: b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 244 complete(&input_device->wait_event); b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 245 b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 246 return; b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 247 } b95f5bcb811e390 K. Y. Srinivasan 2011-11-17 248 :::::: The code at line 218 was first introduced by commit :::::: b95f5bcb811e3905b5376f87789da8d097fee682 HID: Move the hid-hyperv driver out of staging :::::: TO: K. Y. Srinivasan <kys(a)microsoft.com&gt; :::::: CC: Jiri Kosina <jkosina(a)suse.cz&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org