* [openeuler:openEuler-1.0-LTS 1932/1932] drivers/char/svm.c:366:43: sparse: sparse: incorrect type in argument 1 (different address spaces)
@ 2025-11-05 23:49 kernel test robot
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From: kernel test robot @ 2025-11-05 23:49 UTC (permalink / raw)
To: kernel, Yang Yingliang; +Cc: oe-kbuild-all
tree: https://gitee.com/openeuler/kernel.git openEuler-1.0-LTS
head: 27e321784c005c852ca4b3a2d146547deac0698f
commit: 51d0e1a742714b2599d54fd92a71bd2998b01084 [1932/1932] support multiple node for getting phys interface
config: arm64-randconfig-r132-20251106 (https://download.01.org/0day-ci/archive/20251106/202511060739.4h8XJsMM-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 11.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251106/202511060739.4h8XJsMM-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511060739.4h8XJsMM-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/char/svm.c:248:20: sparse: sparse: symbol 'svm_find_mem_reg_node' was not declared. Should it be static?
drivers/char/svm.c:325:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct svm_va2pa_slot *slot @@ got void [noderef] <asn:2> * @@
drivers/char/svm.c:325:14: sparse: expected struct svm_va2pa_slot *slot
drivers/char/svm.c:325:14: sparse: got void [noderef] <asn:2> *
>> drivers/char/svm.c:366:43: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void volatile [noderef] <asn:2> *addr @@ got struct svm_va2pa_slot *slots @@
drivers/char/svm.c:366:43: sparse: expected void volatile [noderef] <asn:2> *addr
drivers/char/svm.c:366:43: sparse: got struct svm_va2pa_slot *slots
drivers/char/svm.c:449:6: sparse: sparse: symbol 'sysrq_sched_debug_show_export' was not declared. Should it be static?
drivers/char/svm.c:1272:35: sparse: sparse: Using plain integer as NULL pointer
drivers/char/svm.c:248:21: warning: no previous prototype for 'svm_find_mem_reg_node' [-Wmissing-prototypes]
248 | struct device_node *svm_find_mem_reg_node(struct device *dev, const char *compat)
| ^~~~~~~~~~~~~~~~~~~~~
drivers/char/svm.c:449:6: warning: no previous prototype for 'sysrq_sched_debug_show_export' [-Wmissing-prototypes]
449 | void sysrq_sched_debug_show_export(void)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/char/svm.c:1476:5: warning: no previous prototype for 'svm_get_pasid' [-Wmissing-prototypes]
1476 | int svm_get_pasid(pid_t vpid, int dev_id __maybe_unused)
| ^~~~~~~~~~~~~
drivers/char/svm.c:2269:36: warning: 'svm_acpi_match' defined but not used [-Wunused-const-variable=]
2269 | static const struct acpi_device_id svm_acpi_match[] = {
| ^~~~~~~~~~~~~~
In file included from arch/arm64/include/asm/atomic.h:34,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/atomic.h:5,
from arch/arm64/include/asm/bitops.h:37,
from include/linux/bitops.h:19,
from include/linux/kernel.h:11,
from include/asm-generic/bug.h:18,
from arch/arm64/include/asm/bug.h:37,
from arch/arm64/include/asm/memory.h:27,
from arch/arm64/include/asm/esr.h:21,
from drivers/char/svm.c:10:
drivers/char/svm.c: In function 'svm_proc_load_flag':
arch/arm64/include/asm/atomic_lse.h:492:9: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'atomic_t[1]' [-Warray-bounds]
492 | asm volatile( 37- | ^~~
arch/arm64/include/asm/atomic_lse.h:523:1: note: in expansion of macro '__CMPXCHG_CASE'
523 | __CMPXCHG_CASE(w, , mb_4, al, "memory")
| ^~~~~~~~~~~~~~
drivers/char/svm.c:1796:25: note: while referencing 'l2buf_load_flag'
1796 | static atomic_t l2buf_load_flag = ATOMIC_INIT(0);
| ^~~~~~~~~~~~~~~
In file included from arch/arm64/include/asm/atomic.h:34,
from include/linux/atomic.h:7,
from include/asm-generic/bitops/atomic.h:5,
from arch/arm64/include/asm/bitops.h:37,
from include/linux/bitops.h:19,
from include/linux/kernel.h:11,
from include/asm-generic/bug.h:18,
from arch/arm64/include/asm/bug.h:37,
from arch/arm64/include/asm/memory.h:27,
from arch/arm64/include/asm/esr.h:21,
from drivers/char/svm.c:10:
arch/arm64/include/asm/atomic_lse.h:492:9: warning: array subscript 'long unsigned int[0]' is partly outside array bounds of 'atomic_t[1]' [-Warray-bounds]
492 | asm volatile( 57- | ^~~
arch/arm64/include/asm/atomic_lse.h:523:1: note: in expansion of macro '__CMPXCHG_CASE'
523 | __CMPXCHG_CASE(w, , mb_4, al, "memory")
| ^~~~~~~~~~~~~~
drivers/char/svm.c:1796:25: note: while referencing 'l2buf_load_flag'
1796 | static atomic_t l2buf_load_flag = ATOMIC_INIT(0);
| ^~~~~~~~~~~~~~~
vim +366 drivers/char/svm.c
247
> 248 struct device_node *svm_find_mem_reg_node(struct device *dev, const char *compat)
249 {
250 int index = 0;
251 struct device_node *tmp = NULL;
252 struct device_node *np = dev->of_node;
253
254 for (; ; index++) {
255 tmp = of_parse_phandle(np, "memory-region", index);
256 if (!tmp)
257 break;
258
259 if (of_device_is_compatible(tmp, compat))
260 return tmp;
261
262 of_node_put(tmp);
263 }
264
265 return NULL;
266 }
267
268 static int svm_parse_trunk_memory(struct device *dev)
269 {
270 int err, count;
271 struct resource r;
272 struct device_node *trunk = NULL;
273
274 trunk = svm_find_mem_reg_node(dev, SVM_MEM_REG);
275 if (!trunk) {
276 dev_err(dev, "Didn't find reserved memory\n");
277 return -EINVAL;
278 }
279
280 for (count = 0; count < SVM_VA2PA_TRUNK_COUNT_MAX; count++) {
281 err = of_address_to_resource(trunk, count, &r);
282 if (err)
283 break;
284
285 va2pa_trunk[count].base = r.start;
286 va2pa_trunk[count].size = resource_size(&r);
287 }
288
289 if (!count) {
290 dev_err(dev, "Couldn't address to resource for reserved memory\n");
291 return -ENODEV;
292 }
293
294 return 0;
295 }
296
297 static int __svm_setup_trunk(struct device *dev, struct svm_va2pa_trunk *trunk)
298 {
299 int slot_total;
300 unsigned long *bitmap = NULL;
301 struct svm_va2pa_slot *slot = NULL;
302 phys_addr_t base = trunk->base;
303 unsigned long size = trunk->size;
304
305 if (!IS_ALIGNED(base, SVM_VA2PA_MEMORY_ALIGN)) {
306 dev_err(dev, "Didn't aligned to %u\n", SVM_VA2PA_MEMORY_ALIGN);
307 return -EINVAL;
308 }
309
310 if ((size == 0) || (size > SVM_VA2PA_TRUNK_SIZE_MAX)) {
311 dev_err(dev, "Size of reserved memory is not right\n");
312 return -EINVAL;
313 }
314
315 slot_total = size / SVM_VA2PA_SLOT_SIZE;
316 if (slot_total < BITS_PER_LONG)
317 return -EINVAL;
318
319 bitmap = kvcalloc(slot_total / BITS_PER_LONG, sizeof(unsigned long), GFP_KERNEL);
320 if (!bitmap) {
321 dev_err(dev, "alloc memory failed\n");
322 return -ENOMEM;
323 }
324
325 slot = ioremap(base, size);
326 if (!slot) {
327 kvfree(bitmap);
328 dev_err(dev, "Ioremap trunk failed\n");
329 return -ENXIO;
330 }
331
332 trunk->slots = slot;
333 trunk->slot_used = 0;
334 trunk->slot_total = slot_total;
335 trunk->bitmap = bitmap;
336 mutex_init(&trunk->mutex);
337
338 return 0;
339 }
340
341 static int svm_setup_trunk(struct device *dev)
342 {
343 int err = 0;
344 int count;
345
346 for (count = 0; count < SVM_VA2PA_TRUNK_COUNT_MAX; count++) {
347 if (!va2pa_trunk[count].base)
348 break;
349
350 err = __svm_setup_trunk(dev, &va2pa_trunk[count]);
351 if (err)
352 break;
353 }
354
355 return err;
356 }
357
358 static void svm_remove_trunk(struct device *dev)
359 {
360 int count;
361
362 for (count = 0; count < SVM_VA2PA_TRUNK_COUNT_MAX; count++) {
363 if (!va2pa_trunk[count].base)
364 break;
365
> 366 iounmap(va2pa_trunk[count].slots);
367 kvfree(va2pa_trunk[count].bitmap);
368 va2pa_trunk[count].slots = NULL;
369 va2pa_trunk[count].bitmap = NULL;
370 }
371 }
372
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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