* [jimc:dd-drm-next 5/8] drivers/gpu/drm/drm_client_modeset.o: warning: objtool: drm_client_firmware_config()+0x586: unreachable instruction
@ 2021-09-03 20:29 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2021-09-03 20:29 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 41097 bytes --]
CC: kbuild-all(a)lists.01.org
TO: Jim Cromie <jim.cromie@gmail.com>
tree: https://github.com/jimc/linux.git dd-drm-next
head: f9f185054f04be5d359668104afd61f5ae6aae56
commit: 83a158f0e8c7b09dd9241c9f71f200b07caf1705 [5/8] drm_print: add choice to use dynamic debug in drm-debug
:::::: branch date: 2 days ago
:::::: commit date: 2 days ago
config: x86_64-randconfig-c007-20210901 (attached as .config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c9948e9254fbb6ea00f66c7b4542311d21e060be)
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/jimc/linux/commit/83a158f0e8c7b09dd9241c9f71f200b07caf1705
git remote add jimc https://github.com/jimc/linux.git
git fetch --no-tags jimc dd-drm-next
git checkout 83a158f0e8c7b09dd9241c9f71f200b07caf1705
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
>> drivers/gpu/drm/drm_client_modeset.o: warning: objtool: drm_client_firmware_config()+0x586: unreachable instruction
--
>> drivers/gpu/drm/drm_edid.o: warning: objtool: drm_parse_cea_ext()+0x63d: unreachable instruction
clang-analyzer warnings: (new ones prefixed by >>)
^
include/asm-generic/bug.h:65:27: note: expanded from macro 'BUG_ON'
#define BUG_ON(condition) do { if (unlikely(condition)) BUG(); } while (0)
^
kernel/workqueue.c:5966:22: note: Assigned value is garbage or undefined
pool->attrs->nice = std_nice[i++];
^ ~~~~~~~~~~~~~
Suppressed 9 warnings (9 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.
8 warnings generated.
Suppressed 8 warnings (8 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.
8 warnings generated.
drivers/pinctrl/pinctrl-single.c:1422:3: warning: Value stored to 'mask' is never read [clang-analyzer-deadcode.DeadStores]
mask = pcs->read(pcswi->reg);
^ ~~~~~~~~~~~~~~~~~~~~~
drivers/pinctrl/pinctrl-single.c:1422:3: note: Value stored to 'mask' is never read
mask = pcs->read(pcswi->reg);
^ ~~~~~~~~~~~~~~~~~~~~~
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.
9 warnings generated.
drivers/gpio/gpio-adnp.c:385:28: warning: The result of the left shift is undefined due to shifting by '4294967292', which is greater or equal to the width of type 'int' [clang-analyzer-core.UndefinedBinaryOperatorResult]
unsigned int num_regs = 1 << adnp->reg_shift, i;
^
drivers/gpio/gpio-adnp.c:498:6: note: 'err' is >= 0
if (err < 0)
^~~
drivers/gpio/gpio-adnp.c:498:2: note: Taking false branch
if (err < 0)
^
drivers/gpio/gpio-adnp.c:502:6: note: Assuming field 'irq' is not equal to 0
if (!client->irq)
^~~~~~~~~~~~
drivers/gpio/gpio-adnp.c:502:2: note: Taking false branch
if (!client->irq)
^
drivers/gpio/gpio-adnp.c:506:6: note: Assuming 'adnp' is non-null
if (!adnp)
^~~~~
drivers/gpio/gpio-adnp.c:506:2: note: Taking false branch
if (!adnp)
^
drivers/gpio/gpio-adnp.c:509:2: note: Loop condition is false. Exiting loop
mutex_init(&adnp->i2c_lock);
^
include/linux/mutex.h:113:32: note: expanded from macro 'mutex_init'
#define mutex_init(mutex) \
^
drivers/gpio/gpio-adnp.c:512:8: note: Calling 'adnp_gpio_setup'
err = adnp_gpio_setup(adnp, num_gpios,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpio/gpio-adnp.c:446:2: note: The value 4294967292 is assigned to field 'reg_shift'
adnp->reg_shift = get_count_order(num_gpios) - 3;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpio/gpio-adnp.c:454:2: note: Taking true branch
if (IS_ENABLED(CONFIG_DEBUG_FS))
^
drivers/gpio/gpio-adnp.c:464:6: note: 'is_irq_controller' is true
if (is_irq_controller) {
^~~~~~~~~~~~~~~~~
drivers/gpio/gpio-adnp.c:464:2: note: Taking true branch
if (is_irq_controller) {
^
drivers/gpio/gpio-adnp.c:467:9: note: Calling 'adnp_irq_setup'
err = adnp_irq_setup(adnp);
^~~~~~~~~~~~~~~~~~~~
drivers/gpio/gpio-adnp.c:385:28: note: The result of the left shift is undefined due to shifting by '4294967292', which is greater or equal to the width of type 'int'
unsigned int num_regs = 1 << adnp->reg_shift, i;
^ ~~~~~~~~~~~~~~~
Suppressed 8 warnings (8 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.
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.
8 warnings generated.
Suppressed 8 warnings (8 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.
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.
10 warnings generated.
Suppressed 10 warnings (10 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.
10 warnings generated.
Suppressed 10 warnings (10 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.
10 warnings generated.
Suppressed 10 warnings (10 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.
11 warnings generated.
>> drivers/gpu/drm/mxsfb/mxsfb_kms.c:190:21: warning: Value stored to 'drm' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct drm_device *drm = mxsfb->crtc.dev;
^~~ ~~~~~~~~~~~~~~~
drivers/gpu/drm/mxsfb/mxsfb_kms.c:190:21: note: Value stored to 'drm' during its initialization is never read
struct drm_device *drm = mxsfb->crtc.dev;
^~~ ~~~~~~~~~~~~~~~
Suppressed 10 warnings (10 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.
8 warnings generated.
Suppressed 8 warnings (8 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.
8 warnings generated.
drivers/base/test/test_async_driver_probe.c:166:12: warning: Dereference of null pointer (loaded from variable 'pdev') [clang-analyzer-core.NullDereference]
dev_info(&(*pdev)->dev,
^
include/linux/dev_printk.h:118:12: note: expanded from macro 'dev_info'
_dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
^~~
drivers/base/test/test_async_driver_probe.c:104:2: note: 'pdev' initialized to a null pointer value
struct platform_device **pdev = NULL;
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/base/test/test_async_driver_probe.c:112:2: note: Assuming 'cpu' is >= 'nr_cpu_ids'
for_each_online_cpu(cpu) {
^
include/linux/cpumask.h:789:36: note: expanded from macro 'for_each_online_cpu'
#define for_each_online_cpu(cpu) for_each_cpu((cpu), cpu_online_mask)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/cpumask.h:243:3: note: expanded from macro 'for_each_cpu'
(cpu) < nr_cpu_ids;)
^~~~~~~~~~~~~~~~~~
drivers/base/test/test_async_driver_probe.c:112:2: note: Loop condition is false. Execution continues on line 128
for_each_online_cpu(cpu) {
^
include/linux/cpumask.h:789:36: note: expanded from macro 'for_each_online_cpu'
#define for_each_online_cpu(cpu) for_each_cpu((cpu), cpu_online_mask)
^
include/linux/cpumask.h:241:2: note: expanded from macro 'for_each_cpu'
for ((cpu) = -1; \
^
drivers/base/test/test_async_driver_probe.c:131:6: note: Assuming 'err' is 0
if (err) {
^~~
drivers/base/test/test_async_driver_probe.c:131:2: note: Taking false branch
if (err) {
^
drivers/base/test/test_async_driver_probe.c:139:6: note: Assuming the condition is false
if (duration > TEST_PROBE_THRESHOLD) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/base/test/test_async_driver_probe.c:139:2: note: Taking false branch
if (duration > TEST_PROBE_THRESHOLD) {
^
drivers/base/test/test_async_driver_probe.c:147:2: note: Assuming 'cpu' is >= 'nr_cpu_ids'
for_each_online_cpu(cpu) {
^
include/linux/cpumask.h:789:36: note: expanded from macro 'for_each_online_cpu'
#define for_each_online_cpu(cpu) for_each_cpu((cpu), cpu_online_mask)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/cpumask.h:243:3: note: expanded from macro 'for_each_cpu'
(cpu) < nr_cpu_ids;)
^~~~~~~~~~~~~~~~~~
drivers/base/test/test_async_driver_probe.c:147:2: note: Loop condition is false. Execution continues on line 164
for_each_online_cpu(cpu) {
^
include/linux/cpumask.h:789:36: note: expanded from macro 'for_each_online_cpu'
#define for_each_online_cpu(cpu) for_each_cpu((cpu), cpu_online_mask)
^
include/linux/cpumask.h:241:2: note: expanded from macro 'for_each_cpu'
for ((cpu) = -1; \
^
drivers/base/test/test_async_driver_probe.c:166:12: note: Dereference of null pointer (loaded from variable 'pdev')
dev_info(&(*pdev)->dev,
^
include/linux/dev_printk.h:118:12: note: expanded from macro 'dev_info'
_dev_info(dev, dev_fmt(fmt), ##__VA_ARGS__)
^~~
drivers/base/test/test_async_driver_probe.c:177:2: warning: Value stored to 'nid' is never read [clang-analyzer-deadcode.DeadStores]
nid = cpu_to_node(cpu);
^ ~~~~~~~~~~~~~~~~
drivers/base/test/test_async_driver_probe.c:177:2: note: Value stored to 'nid' is never read
nid = cpu_to_node(cpu);
^ ~~~~~~~~~~~~~~~~
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.
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.
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.
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.
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.
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.
--
include/linux/byteorder/generic.h:91:21: note: expanded from macro 'le16_to_cpu'
#define le16_to_cpu __le16_to_cpu
^
include/uapi/linux/byteorder/little_endian.h:36:26: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) ((__force __u16)(__le16)(x))
^
drivers/media/usb/dvb-usb/opera1.c:556:3: note: Calling 'opera1_xilinx_load_firmware'
opera1_xilinx_load_firmware(udev, "dvb-usb-opera1-fpga-01.fw") != 0
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/usb/dvb-usb/opera1.c:449:2: note: 'testval' declared without an initial value
u8 testval;
^~~~~~~~~~
drivers/media/usb/dvb-usb/opera1.c:452:6: note: Assuming the condition is false
if ((ret = request_firmware(&fw, filename, &dev->dev)) != 0) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/usb/dvb-usb/opera1.c:452:2: note: Taking false branch
if ((ret = request_firmware(&fw, filename, &dev->dev)) != 0) {
^
drivers/media/usb/dvb-usb/opera1.c:458:3: note: Calling 'opera1_xilinx_rw'
opera1_xilinx_rw(dev, 0xbc, 0x00, &testval, 1, OPERA_READ_MSG);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/usb/dvb-usb/opera1.c:55:23: note: 'flags' is equal to OPERA_READ_MSG
unsigned int pipe = (flags == OPERA_READ_MSG) ?
^~~~~
drivers/media/usb/dvb-usb/opera1.c:55:22: note: '?' condition is true
unsigned int pipe = (flags == OPERA_READ_MSG) ?
^
drivers/media/usb/dvb-usb/opera1.c:57:21: note: 'flags' is equal to OPERA_READ_MSG
u8 request_type = (flags == OPERA_READ_MSG) ? USB_DIR_IN : USB_DIR_OUT;
^~~~~
drivers/media/usb/dvb-usb/opera1.c:57:20: note: '?' condition is true
u8 request_type = (flags == OPERA_READ_MSG) ? USB_DIR_IN : USB_DIR_OUT;
^
drivers/media/usb/dvb-usb/opera1.c:60:6: note: Assuming 'buf' is null
if (!buf)
^~~~
drivers/media/usb/dvb-usb/opera1.c:60:2: note: Taking true branch
if (!buf)
^
drivers/media/usb/dvb-usb/opera1.c:61:3: note: Returning without writing to '*data'
return -ENOMEM;
^
drivers/media/usb/dvb-usb/opera1.c:458:3: note: Returning from 'opera1_xilinx_rw'
opera1_xilinx_rw(dev, 0xbc, 0x00, &testval, 1, OPERA_READ_MSG);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/usb/dvb-usb/opera1.c:459:7: note: Assuming 'p' is not equal to NULL
if (p != NULL && testval != 0x67) {
^~~~~~~~~
drivers/media/usb/dvb-usb/opera1.c:459:7: note: Left side of '&&' is true
drivers/media/usb/dvb-usb/opera1.c:459:28: note: The left operand of '!=' is a garbage value
if (p != NULL && testval != 0x67) {
~~~~~~~ ^
Suppressed 14 warnings (14 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.
11 warnings generated.
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:514:8: warning: Branch condition evaluates to a garbage value [clang-analyzer-core.uninitialized.Branch]
if (!(dflow->en_scaling || dflow->en_img_enhancement))
^
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:1164:8: note: Calling 'komeda_splitter_validate'
err = komeda_splitter_validate(pipe->splitter, conn_st,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:572:6: note: Assuming 'splitter' is non-null
if (!splitter) {
^~~~~~~~~
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:572:2: note: Taking false branch
if (!splitter) {
^
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:577:2: note: Taking false branch
if (!in_range(&splitter->hsize, dflow->in_w)) {
^
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:583:2: note: Taking false branch
if (!in_range(&splitter->vsize, dflow->in_h)) {
^
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:592:2: note: Taking true branch
if (IS_ERR(c_st))
^
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:593:3: note: Returning without writing to 'l_output->en_scaling'
return PTR_ERR(c_st);
^
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:1164:8: note: Returning from 'komeda_splitter_validate'
err = komeda_splitter_validate(pipe->splitter, conn_st,
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:1166:6: note: Assuming 'err' is 0
if (err)
^~~
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:1166:2: note: Taking false branch
if (err)
^
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:1168:8: note: Calling 'komeda_scaler_validate'
err = komeda_scaler_validate(conn, kcrtc_st, &l_dflow);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/arm/display/komeda/komeda_pipeline_state.c:514:8: note: Branch condition evaluates to a garbage value
if (!(dflow->en_scaling || dflow->en_img_enhancement))
^~~~~~~~~~~~~~~~~
Suppressed 10 warnings (10 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.
10 warnings generated.
Suppressed 10 warnings (10 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.
13 warnings generated.
>> drivers/gpu/drm/arm/display/komeda/komeda_kms.c:122:22: warning: Value stored to 'a' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct drm_plane *a = node->base.plane;
^ ~~~~~~~~~~~~~~~~
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:122:22: note: Value stored to 'a' during its initialization is never read
struct drm_plane *a = node->base.plane;
^ ~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/arm/display/komeda/komeda_kms.c:123:22: warning: Value stored to 'b' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct drm_plane *b = new->base.plane;
^ ~~~~~~~~~~~~~~~
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:123:22: note: Value stored to 'b' during its initialization is never read
struct drm_plane *b = new->base.plane;
^ ~~~~~~~~~~~~~~~
include/linux/list.h:73:2: warning: Dereference of null pointer [clang-analyzer-core.NullDereference]
WRITE_ONCE(prev->next, new);
^
include/asm-generic/rwonce.h:61:2: note: expanded from macro 'WRITE_ONCE'
__WRITE_ONCE(x, val); \
^
include/asm-generic/rwonce.h:55:30: note: expanded from macro '__WRITE_ONCE'
*(volatile typeof(x) *)&(x) = (val); \
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:206:6: note: Assuming 'err' is 0
if (err)
^~~
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:206:2: note: Taking false branch
if (err)
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:213:2: note: Assuming 'i' is < field 'num_crtc'
for_each_new_crtc_in_state(state, crtc, new_crtc_st, i) {
^
include/drm/drm_atomic.h:846:7: note: expanded from macro 'for_each_new_crtc_in_state'
(__i) < (__state)->dev->mode_config.num_crtc; \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:213:2: note: Loop condition is true. Entering loop body
for_each_new_crtc_in_state(state, crtc, new_crtc_st, i) {
^
include/drm/drm_atomic.h:845:2: note: expanded from macro 'for_each_new_crtc_in_state'
for ((__i) = 0; \
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:213:2: note: Assuming field 'ptr' is non-null
for_each_new_crtc_in_state(state, crtc, new_crtc_st, i) {
^
include/drm/drm_atomic.h:848:16: note: expanded from macro 'for_each_new_crtc_in_state'
for_each_if ((__state)->crtcs[__i].ptr && \
~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/drm/drm_util.h:63:38: note: expanded from macro 'for_each_if'
#define for_each_if(condition) if (!(condition)) {} else
^~~~~~~~~
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:213:2: note: Left side of '&&' is true
for_each_new_crtc_in_state(state, crtc, new_crtc_st, i) {
^
include/drm/drm_atomic.h:848:16: note: expanded from macro 'for_each_new_crtc_in_state'
for_each_if ((__state)->crtcs[__i].ptr && \
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:213:2: note: Taking false branch
for_each_new_crtc_in_state(state, crtc, new_crtc_st, i) {
^
include/drm/drm_atomic.h:848:3: note: expanded from macro 'for_each_new_crtc_in_state'
for_each_if ((__state)->crtcs[__i].ptr && \
^
include/drm/drm_util.h:63:32: note: expanded from macro 'for_each_if'
#define for_each_if(condition) if (!(condition)) {} else
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:215:7: note: Assuming 'err' is 0
if (err)
^~~
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:215:3: note: Taking false branch
if (err)
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:218:9: note: Calling 'komeda_crtc_normalize_zpos'
err = komeda_crtc_normalize_zpos(crtc, new_crtc_st);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:141:30: note: Left side of '&&' is false
struct komeda_crtc *kcrtc = to_kcrtc(crtc);
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.h:131:21: note: expanded from macro 'to_kcrtc'
#define to_kcrtc(p) container_of(p, struct komeda_crtc, base)
^
include/linux/kernel.h:495:61: note: expanded from macro 'container_of'
BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:141:30: note: Taking false branch
struct komeda_crtc *kcrtc = to_kcrtc(crtc);
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.h:131:21: note: expanded from macro 'to_kcrtc'
#define to_kcrtc(p) container_of(p, struct komeda_crtc, base)
^
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)) \
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.c:141:30: note: Loop condition is false. Exiting loop
struct komeda_crtc *kcrtc = to_kcrtc(crtc);
^
drivers/gpu/drm/arm/display/komeda/komeda_kms.h:131:21: note: expanded from macro 'to_kcrtc'
#define to_kcrtc(p) container_of(p, struct komeda_crtc, base)
--
^~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/dib8000.c:2730:2: note: Taking false branch
if (c->isdbt_sb_mode) {
^
drivers/media/dvb-frontends/dib8000.c:2745:2: note: Assuming 'debug' is 0
dprintk("%dkhz tuner offset (frequency = %dHz & current_rf = %dHz) total_dds_offset_hz = %d\n", c->frequency - current_rf, c->frequency, current_rf, total_dds_offset_khz);
^
drivers/media/dvb-frontends/dib8000.c:35:6: note: expanded from macro 'dprintk'
if (debug) \
^~~~~
drivers/media/dvb-frontends/dib8000.c:2745:2: note: Taking false branch
dprintk("%dkhz tuner offset (frequency = %dHz & current_rf = %dHz) total_dds_offset_hz = %d\n", c->frequency - current_rf, c->frequency, current_rf, total_dds_offset_khz);
^
drivers/media/dvb-frontends/dib8000.c:35:2: note: expanded from macro 'dprintk'
if (debug) \
^
drivers/media/dvb-frontends/dib8000.c:2745:2: note: Loop condition is false. Exiting loop
dprintk("%dkhz tuner offset (frequency = %dHz & current_rf = %dHz) total_dds_offset_hz = %d\n", c->frequency - current_rf, c->frequency, current_rf, total_dds_offset_khz);
^
drivers/media/dvb-frontends/dib8000.c:34:30: note: expanded from macro 'dprintk'
#define dprintk(fmt, arg...) do { \
^
drivers/media/dvb-frontends/dib8000.c:2748:2: note: Calling 'dib8000_set_dds'
dib8000_set_dds(state, total_dds_offset_khz);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/dib8000.c:2677:23: note: Assuming '__x' is >= 0
u32 abs_offset_khz = abs(offset_khz);
^
include/linux/math.h:133:3: note: expanded from macro 'abs'
__abs_choose_expr(x, int, \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/math.h:144:28: note: expanded from macro '__abs_choose_expr'
({ signed type __x = (x); __x < 0 ? -__x : __x; }), other)
^~~~~~~
include/linux/math.h:144:54: note: expanded from macro '__abs_choose_expr'
({ signed type __x = (x); __x < 0 ? -__x : __x; }), other)
^~~~~
include/linux/math.h:144:54: note: expanded from macro '__abs_choose_expr'
({ signed type __x = (x); __x < 0 ? -__x : __x; }), other)
^~~~~
drivers/media/dvb-frontends/dib8000.c:2677:23: note: '?' condition is false
u32 abs_offset_khz = abs(offset_khz);
^
include/linux/math.h:133:3: note: expanded from macro 'abs'
__abs_choose_expr(x, int, \
^
include/linux/math.h:144:28: note: expanded from macro '__abs_choose_expr'
({ signed type __x = (x); __x < 0 ? -__x : __x; }), other)
^
drivers/media/dvb-frontends/dib8000.c:2679:15: note: Assuming the condition is false
u8 invert = !!(state->cfg.pll->ifreq & (1 << 25));
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/dib8000.c:2682:6: note: Assuming field 'revision' is equal to 32912
if (state->revision == 0x8090) {
^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/dib8000.c:2682:2: note: Taking true branch
if (state->revision == 0x8090) {
^
drivers/media/dvb-frontends/dib8000.c:2684:33: note: Calling 'dib8000_read32'
unit_khz_dds_val = (1<<26) / (dib8000_read32(state, 23) / 1000);
^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/dib8000.c:216:6: note: Assuming the condition is true
if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
^
include/linux/mutex.h:166:40: note: expanded from macro 'mutex_lock_interruptible'
#define mutex_lock_interruptible(lock) mutex_lock_interruptible_nested(lock, 0)
^
drivers/media/dvb-frontends/dib8000.c:216:2: note: Taking true branch
if (mutex_lock_interruptible(&state->i2c_buffer_lock) < 0) {
^
drivers/media/dvb-frontends/dib8000.c:217:3: note: Assuming 'debug' is 0
dprintk("could not acquire lock\n");
^
drivers/media/dvb-frontends/dib8000.c:35:6: note: expanded from macro 'dprintk'
if (debug) \
^~~~~
drivers/media/dvb-frontends/dib8000.c:217:3: note: Taking false branch
dprintk("could not acquire lock\n");
^
drivers/media/dvb-frontends/dib8000.c:35:2: note: expanded from macro 'dprintk'
if (debug) \
^
drivers/media/dvb-frontends/dib8000.c:217:3: note: Loop condition is false. Exiting loop
dprintk("could not acquire lock\n");
^
drivers/media/dvb-frontends/dib8000.c:34:30: note: expanded from macro 'dprintk'
#define dprintk(fmt, arg...) do { \
^
drivers/media/dvb-frontends/dib8000.c:218:3: note: Returning zero
return 0;
^~~~~~~~
drivers/media/dvb-frontends/dib8000.c:2684:33: note: Returning from 'dib8000_read32'
unit_khz_dds_val = (1<<26) / (dib8000_read32(state, 23) / 1000);
^~~~~~~~~~~~~~~~~~~~~~~~~
drivers/media/dvb-frontends/dib8000.c:2684:30: note: Division by zero
unit_khz_dds_val = (1<<26) / (dib8000_read32(state, 23) / 1000);
~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 8 warnings (8 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.
13 warnings generated.
>> drivers/gpu/drm/bridge/nwl-dsi.c:278:2: warning: Value stored to 'vsync_len' is never read [clang-analyzer-deadcode.DeadStores]
vsync_len = dsi->mode.vsync_end - dsi->mode.vsync_start;
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/bridge/nwl-dsi.c:278:2: note: Value stored to 'vsync_len' is never read
vsync_len = dsi->mode.vsync_end - dsi->mode.vsync_start;
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
>> drivers/gpu/drm/bridge/nwl-dsi.c:733:17: warning: Value stored to 'dev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct device *dev = dsi->dev;
^~~ ~~~~~~~~
drivers/gpu/drm/bridge/nwl-dsi.c:733:17: note: Value stored to 'dev' during its initialization is never read
struct device *dev = dsi->dev;
^~~ ~~~~~~~~
>> drivers/gpu/drm/bridge/nwl-dsi.c:864:2: warning: Value stored to 'phy_ref_rate' is never read [clang-analyzer-deadcode.DeadStores]
phy_ref_rate = clk_get_rate(dsi->phy_ref_clk);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/bridge/nwl-dsi.c:864:2: note: Value stored to 'phy_ref_rate' is never read
phy_ref_rate = clk_get_rate(dsi->phy_ref_clk);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 10 warnings (10 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.
11 warnings generated.
drivers/gpu/drm/bridge/ite-it66121.c:538:2: warning: Value stored to 'ret' is never read [clang-analyzer-deadcode.DeadStores]
ret = drm_bridge_attach(bridge->encoder, ctx->next_bridge, bridge, flags);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/bridge/ite-it66121.c:538:2: note: Value stored to 'ret' is never read
ret = drm_bridge_attach(bridge->encoder, ctx->next_bridge, bridge, flags);
^ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Suppressed 10 warnings (10 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.
10 warnings generated.
Suppressed 10 warnings (10 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.
10 warnings generated.
Suppressed 10 warnings (10 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.
10 warnings generated.
drivers/hwmon/lm90.c:1045:41: warning: The result of the left shift is undefined because the left operand is negative [clang-analyzer-core.UndefinedBinaryOperatorResult]
data->temp11[index] = temp_to_s8(val) << 8;
^
drivers/hwmon/lm90.c:1408:2: note: Control jumps to 'case hwmon_temp:' at line 1411
switch (type) {
^
drivers/hwmon/lm90.c:1412:10: note: Calling 'lm90_temp_write'
return lm90_temp_write(dev, attr, channel, val);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/hwmon/lm90.c:1256:6: note: 'err' is 0
if (err)
^~~
drivers/hwmon/lm90.c:1256:2: note: Taking false branch
if (err)
^
drivers/hwmon/lm90.c:1259:2: note: Control jumps to 'case hwmon_temp_offset:' @line 1289
switch (attr) {
^
drivers/hwmon/lm90.c:1290:9: note: Calling 'lm90_set_temp11'
err = lm90_set_temp11(data, REMOTE_OFFSET, val);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/hwmon/lm90.c:1032:6: note: Assuming field 'kind' is equal to lm99
if (data->kind == lm99 && index <= 2) {
^~~~~~~~~~~~~~~~~~
drivers/hwmon/lm90.c:1032:6: note: Left side of '&&' is true
drivers/hwmon/lm90.c:1032:28: note: 'index' is > 2
if (data->kind == lm99 && index <= 2) {
^~~~~
drivers/hwmon/lm90.c:1032:2: note: Taking false branch
if (data->kind == lm99 && index <= 2) {
^
drivers/hwmon/lm90.c:1038:12: note: Field 'kind' is not equal to adt7461
if (data->kind == adt7461 || data->kind == tmp451)
^
drivers/hwmon/lm90.c:1038:6: note: Left side of '||' is false
if (data->kind == adt7461 || data->kind == tmp451)
^
drivers/hwmon/lm90.c:1038:37: note: Field 'kind' is not equal to tmp451
if (data->kind == adt7461 || data->kind == tmp451)
^
drivers/hwmon/lm90.c:1038:2: note: Taking false branch
if (data->kind == adt7461 || data->kind == tmp451)
^
drivers/hwmon/lm90.c:1040:17: note: Field 'kind' is not equal to max6646
else if (data->kind == max6646)
^
drivers/hwmon/lm90.c:1040:7: note: Taking false branch
else if (data->kind == max6646)
^
drivers/hwmon/lm90.c:1042:11: note: Assuming the condition is false
else if (data->flags & LM90_HAVE_REM_LIMIT_EXT)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/hwmon/lm90.c:1042:7: note: Taking false branch
else if (data->flags & LM90_HAVE_REM_LIMIT_EXT)
^
drivers/hwmon/lm90.c:1045:25: note: Calling 'temp_to_s8'
data->temp11[index] = temp_to_s8(val) << 8;
^~~~~~~~~~~~~~~
drivers/hwmon/lm90.c:868:6: note: Assuming the condition is true
if (val <= -128000)
^~~~~~~~~~~~~~
drivers/hwmon/lm90.c:868:2: note: Taking true branch
if (val <= -128000)
^
drivers/hwmon/lm90.c:869:3: note: Returning the value -128
return -128;
^~~~~~~~~~~
drivers/hwmon/lm90.c:1045:25: note: Returning from 'temp_to_s8'
data->temp11[index] = temp_to_s8(val) << 8;
^~~~~~~~~~~~~~~
drivers/hwmon/lm90.c:1045:41: note: The result of the left shift is undefined because the left operand is negative
data->temp11[index] = temp_to_s8(val) << 8;
~~~~~~~~~~~~~~~ ^
Suppressed 9 warnings (8 in non-user code, 1 with check filters).
Use -header-filter=.* to display errors from all non-system headers. Use -system-headers to display errors from system headers as well.
8 warnings generated.
Suppressed 8 warnings (8 in non-user code).
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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2021-09-03 20:29 [jimc:dd-drm-next 5/8] drivers/gpu/drm/drm_client_modeset.o: warning: objtool: drm_client_firmware_config()+0x586: unreachable instruction kernel test robot
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