On 22-08-21, 19:41, kernel test robot wrote: > tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master > head: 86ed57fd8c93fdfaabb4f58e78455180fa7d8a84 > commit: 86afc1df661a99dcd6b8d264cae171f1ead2b7b8 [8440/9522] cpufreq: qcom-cpufreq-hw: Add dcvs interrupt support > config: arm-randconfig-c002-20210822 (attached as .config) > compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project a83d99c55ebb14532c414066a5aa3bdb65389965) > 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 > # install arm cross compiling tool for clang build > # apt-get install binutils-arm-linux-gnueabi > # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=86afc1df661a99dcd6b8d264cae171f1ead2b7b8 > 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 86afc1df661a99dcd6b8d264cae171f1ead2b7b8 > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=arm clang-analyzer > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> This doesn't look right, it says issues are with cpufreq-hw driver but points at hid-core ? > clang-analyzer warnings: (new ones prefixed by >>) > ^ ~ > drivers/hid/hid-core.c:1412:22: warning: The result of the left shift is undefined due to shifting by '32', which is greater or equal to the width of type 'unsigned int' [clang-analyzer-core.UndefinedBinaryOperatorResult] > u8 bit_mask = ((1U << n) - 1); > ^ > drivers/hid/hid-core.c:1717:6: note: Assuming 'buf' is non-null > if (!buf) > ^~~~ > drivers/hid/hid-core.c:1717:2: note: Taking false branch > if (!buf) > ^ > drivers/hid/hid-core.c:1722:6: note: Assuming 'reqtype' is equal to HID_REQ_SET_REPORT > if (reqtype == HID_REQ_SET_REPORT) > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/hid/hid-core.c:1722:2: note: Taking true branch > if (reqtype == HID_REQ_SET_REPORT) > ^ > drivers/hid/hid-core.c:1723:3: note: Calling 'hid_output_report' > hid_output_report(report, buf); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/hid/hid-core.c:1630:14: note: Field 'id' is <= 0 > if (report->id > 0) > ^ > drivers/hid/hid-core.c:1630:2: note: Taking false branch > if (report->id > 0) > ^ > drivers/hid/hid-core.c:1634:14: note: Assuming 'n' is < field 'maxfield' > for (n = 0; n < report->maxfield; n++) > ^~~~~~~~~~~~~~~~~~~~ > drivers/hid/hid-core.c:1634:2: note: Loop condition is true. Entering loop body > for (n = 0; n < report->maxfield; n++) > ^ > drivers/hid/hid-core.c:1635:3: note: Calling 'hid_output_field' > hid_output_field(report->device, report->field[n], data); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/hid/hid-core.c:1597:2: note: 'size' initialized here > unsigned size = field->report_size; > ^~~~~~~~~~~~~ > drivers/hid/hid-core.c:1600:14: note: Assuming 'n' is < 'count' > for (n = 0; n < count; n++) { > ^~~~~~~~~ > drivers/hid/hid-core.c:1600:2: note: Loop condition is true. Entering loop body > for (n = 0; n < count; n++) { > ^ > drivers/hid/hid-core.c:1601:7: note: Assuming field 'logical_minimum' is >= 0 > if (field->logical_minimum < 0) /* signed values */ > ^~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/hid/hid-core.c:1601:3: note: Taking false branch > if (field->logical_minimum < 0) /* signed values */ > ^ > drivers/hid/hid-core.c:1605:44: note: Passing value via 4th parameter 'n' > implement(hid, data, offset + n * size, size, > ^~~~ > drivers/hid/hid-core.c:1605:4: note: Calling 'implement' > implement(hid, data, offset + n * size, size, > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/hid/hid-core.c:1421:15: note: Assuming 'n' is <= 32 > if (unlikely(n > 32)) { > ^ > include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' > # define unlikely(x) __builtin_expect(!!(x), 0) > ^ > drivers/hid/hid-core.c:1421:2: note: Taking false branch > if (unlikely(n > 32)) { > ^ > drivers/hid/hid-core.c:1425:13: note: Assuming 'n' is >= 32 > } else if (n < 32) { > ^~~~~~ > drivers/hid/hid-core.c:1425:9: note: Taking false branch > } else if (n < 32) { > ^ > drivers/hid/hid-core.c:1437:30: note: Passing the value 32 via 3rd parameter 'n' > __implement(report, offset, n, value); > ^ > drivers/hid/hid-core.c:1437:2: note: Calling '__implement' > __implement(report, offset, n, value); > ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/hid/hid-core.c:1400:9: note: Assuming the condition is false > while (n - bits_to_set >= 0) { > ^~~~~~~~~~~~~~~~~~~~ > drivers/hid/hid-core.c:1400:2: note: Loop condition is false. Execution continues on line 1411 > while (n - bits_to_set >= 0) { > ^ > drivers/hid/hid-core.c:1411:6: note: 'n' is 32 > if (n) { > ^ > drivers/hid/hid-core.c:1411:2: note: Taking true branch > if (n) { > ^ > drivers/hid/hid-core.c:1412:22: note: The result of the left shift is undefined due to shifting by '32', which is greater or equal to the width of type 'unsigned int' > u8 bit_mask = ((1U << n) - 1); > ^ ~ > drivers/hid/hid-core.c:1984:3: warning: Value stored to 'len' is never read [clang-analyzer-deadcode.DeadStores] > len += sprintf(buf + len, "%shidraw%d", len ? "," : "", > ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/hid/hid-core.c:1984:3: note: Value stored to 'len' is never read > len += sprintf(buf + len, "%shidraw%d", len ? "," : "", > ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Suppressed 6 warnings (6 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 3 warnings generated. > >> drivers/cpufreq/qcom-cpufreq-hw.c:294:3: warning: Value stored to 'opp' is never read [clang-analyzer-deadcode.DeadStores] > opp = dev_pm_opp_find_freq_ceil(dev, &freq_hz); > ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/cpufreq/qcom-cpufreq-hw.c:294:3: note: Value stored to 'opp' is never read > opp = dev_pm_opp_find_freq_ceil(dev, &freq_hz); > ^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Suppressed 2 warnings (2 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 2 warnings generated. > Suppressed 2 warnings (2 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 2 warnings generated. > Suppressed 2 warnings (2 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 2 warnings generated. > Suppressed 2 warnings (2 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 7 warnings generated. > Suppressed 7 warnings (7 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 3 warnings generated. > Suppressed 3 warnings (3 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 2 warnings generated. > Suppressed 2 warnings (2 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 2 warnings generated. > Suppressed 2 warnings (2 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 3 warnings generated. > Suppressed 3 warnings (3 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 3 warnings generated. > Suppressed 3 warnings (3 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 3 warnings generated. > Suppressed 3 warnings (3 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 6 warnings generated. > Suppressed 6 warnings (6 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 2 warnings generated. > Suppressed 2 warnings (2 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 2 warnings generated. > Suppressed 2 warnings (2 in non-user code). > Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well. > 7 warnings generated. > drivers/dma/xgene-dma.c:445:36: warning: The result of the left shift is undefined due to shifting by '32', which is greater or equal to the width of type 'int' [clang-analyzer-core.UndefinedBinaryOperatorResult] > desc1->m2 |= cpu_to_le64((scf[i] << ((i + 1) * 8))); > ^ > include/linux/byteorder/generic.h:86:21: note: expanded from macro 'cpu_to_le64' > #define cpu_to_le64 __cpu_to_le64 > ^ > drivers/dma/xgene-dma.c:895:15: note: Assuming 'dchan' is non-null > if (unlikely(!dchan || !len)) > ^ > include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' > # define unlikely(x) __builtin_expect(!!(x), 0) > ^ > drivers/dma/xgene-dma.c:895:15: note: Left side of '||' is false > if (unlikely(!dchan || !len)) > ^ > drivers/dma/xgene-dma.c:895:25: note: Assuming 'len' is not equal to 0 > if (unlikely(!dchan || !len)) > ^ > include/linux/compiler.h:78:42: note: expanded from macro 'unlikely' > # define unlikely(x) __builtin_expect(!!(x), 0) > ^ > drivers/dma/xgene-dma.c:895:2: note: Taking false branch > if (unlikely(!dchan || !len)) > ^ > drivers/dma/xgene-dma.c:898:9: note: Left side of '&&' is false > chan = to_dma_chan(dchan); > ^ > drivers/dma/xgene-dma.c:191:2: note: expanded from macro 'to_dma_chan' > container_of(dchan, struct xgene_dma_chan, dma_chan) > ^ > include/linux/kernel.h:495:61: note: expanded from macro 'container_of' > BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ > ^ > drivers/dma/xgene-dma.c:898:9: note: Taking false branch > chan = to_dma_chan(dchan); > ^ > drivers/dma/xgene-dma.c:191:2: note: expanded from macro 'to_dma_chan' > container_of(dchan, struct xgene_dma_chan, dma_chan) > ^ > include/linux/kernel.h:495:2: note: expanded from macro 'container_of' > BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \ > ^ > include/linux/build_bug.h:39:37: note: expanded from macro 'BUILD_BUG_ON_MSG' > #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg) > ^ > include/linux/compiler_types.h:328:2: note: expanded from macro 'compiletime_assert' > _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__) > ^ > include/linux/compiler_types.h:316:2: note: expanded from macro '_compiletime_assert' > __compiletime_assert(condition, msg, prefix, suffix) > ^ > include/linux/compiler_types.h:308:3: note: expanded from macro '__compiletime_assert' > if (!(condition)) \ > > vim +/opp +294 drivers/cpufreq/qcom-cpufreq-hw.c > > 275 > 276 static void qcom_lmh_dcvs_notify(struct qcom_cpufreq_data *data) > 277 { > 278 unsigned long max_capacity, capacity, freq_hz, throttled_freq; > 279 struct cpufreq_policy *policy = data->policy; > 280 int cpu = cpumask_first(policy->cpus); > 281 struct device *dev = get_cpu_device(cpu); > 282 struct dev_pm_opp *opp; > 283 unsigned int freq; > 284 > 285 /* > 286 * Get the h/w throttled frequency, normalize it using the > 287 * registered opp table and use it to calculate thermal pressure. > 288 */ > 289 freq = qcom_lmh_get_throttle_freq(data); > 290 freq_hz = freq * HZ_PER_KHZ; > 291 > 292 opp = dev_pm_opp_find_freq_floor(dev, &freq_hz); > 293 if (IS_ERR(opp) && PTR_ERR(opp) == -ERANGE) > > 294 opp = dev_pm_opp_find_freq_ceil(dev, &freq_hz); > 295 > 296 throttled_freq = freq_hz / HZ_PER_KHZ; > 297 > 298 /* Update thermal pressure */ > 299 > 300 max_capacity = arch_scale_cpu_capacity(cpu); > 301 capacity = mult_frac(max_capacity, throttled_freq, policy->cpuinfo.max_freq); > 302 > 303 /* Don't pass boost capacity to scheduler */ > 304 if (capacity > max_capacity) > 305 capacity = max_capacity; > 306 > 307 arch_set_thermal_pressure(policy->cpus, max_capacity - capacity); > 308 > 309 /* > 310 * In the unlikely case policy is unregistered do not enable > 311 * polling or h/w interrupt > 312 */ > 313 mutex_lock(&data->throttle_lock); > 314 if (data->cancel_throttle) > 315 goto out; > 316 > 317 /* > 318 * If h/w throttled frequency is higher than what cpufreq has requested > 319 * for, then stop polling and switch back to interrupt mechanism. > 320 */ > 321 if (throttled_freq >= qcom_cpufreq_hw_get(cpu)) > 322 enable_irq(data->throttle_irq); > 323 else > 324 mod_delayed_work(system_highpri_wq, &data->throttle_work, > 325 msecs_to_jiffies(10)); > 326 > 327 out: > 328 mutex_unlock(&data->throttle_lock); > 329 } > 330 > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx -- viresh
