* [ogabbay:habanalabs-next 32/33] drivers/misc/habanalabs/common/irq.c:152:20: warning: Value stored to 'hdev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
@ 2022-01-30 11:35 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2022-01-30 11:35 UTC (permalink / raw)
To: kbuild
[-- Attachment #1: Type: text/plain, Size: 30866 bytes --]
CC: llvm(a)lists.linux.dev
CC: kbuild-all(a)lists.01.org
CC: linux-kernel(a)vger.kernel.org
TO: farah kassabri <fkassabri@habana.ai>
CC: Oded Gabbay <ogabbay@kernel.org>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git habanalabs-next
head: c720ae02be190b7639446bba872752a68cb4ba17
commit: 402f801a3488a90a5481524ea87c3da17867e635 [32/33] habanalabs: Timestamps buffers registration
:::::: branch date: 2 days ago
:::::: commit date: 2 days ago
config: riscv-randconfig-c006-20220129 (https://download.01.org/0day-ci/archive/20220130/202201301958.rLUdGi6P-lkp(a)intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 33b45ee44b1f32ffdbc995e6fec806271b4b3ba4)
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 riscv cross compiling tool for clang build
# apt-get install binutils-riscv64-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git/commit/?id=402f801a3488a90a5481524ea87c3da17867e635
git remote add ogabbay https://git.kernel.org/pub/scm/linux/kernel/git/ogabbay/linux.git
git fetch --no-tags ogabbay habanalabs-next
git checkout 402f801a3488a90a5481524ea87c3da17867e635
# save the config file to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=riscv clang-analyzer
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
clang-analyzer warnings: (new ones prefixed by >>)
int ntemp = clamp_val(temp, LM75_TEMP_MIN, LM75_TEMP_MAX);
^
include/linux/minmax.h:137:32: note: expanded from macro 'clamp_val'
#define clamp_val(val, lo, hi) clamp_t(typeof(val), val, lo, hi)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:124:48: note: expanded from macro 'clamp_t'
#define clamp_t(type, val, lo, hi) min_t(type, max_t(type, val, lo), hi)
~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:112:27: note: expanded from macro 'max_t'
#define max_t(type, x, y) __careful_cmp((type)(x), (type)(y), >)
^
note: (skipping 3 expansions in backtrace; use -fmacro-backtrace-limit=0 to see all)
include/linux/minmax.h:104:48: note: expanded from macro 'min_t'
#define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~
include/linux/minmax.h:38:14: note: expanded from macro '__careful_cmp'
__cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op))
~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:31:25: note: expanded from macro '__cmp_once'
typeof(x) unique_x = (x); \
^
drivers/hwmon/lm75.h:27:14: note: '?' condition is false
int ntemp = clamp_val(temp, LM75_TEMP_MIN, LM75_TEMP_MAX);
^
include/linux/minmax.h:137:32: note: expanded from macro 'clamp_val'
#define clamp_val(val, lo, hi) clamp_t(typeof(val), val, lo, hi)
^
include/linux/minmax.h:124:48: note: expanded from macro 'clamp_t'
#define clamp_t(type, val, lo, hi) min_t(type, max_t(type, val, lo), hi)
^
include/linux/minmax.h:112:27: note: expanded from macro 'max_t'
#define max_t(type, x, y) __careful_cmp((type)(x), (type)(y), >)
^
include/linux/minmax.h:38:3: note: expanded from macro '__careful_cmp'
__cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op))
^
include/linux/minmax.h:33:3: note: expanded from macro '__cmp_once'
__cmp(unique_x, unique_y, op); })
^
include/linux/minmax.h:28:26: note: expanded from macro '__cmp'
#define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
^
drivers/hwmon/lm75.h:27:14: note: '__UNIQUE_ID___x181' is < '__UNIQUE_ID___y182'
int ntemp = clamp_val(temp, LM75_TEMP_MIN, LM75_TEMP_MAX);
^
include/linux/minmax.h:137:32: note: expanded from macro 'clamp_val'
#define clamp_val(val, lo, hi) clamp_t(typeof(val), val, lo, hi)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:124:36: note: expanded from macro 'clamp_t'
#define clamp_t(type, val, lo, hi) min_t(type, max_t(type, val, lo), hi)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:104:27: note: expanded from macro 'min_t'
#define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:38:3: note: expanded from macro '__careful_cmp'
__cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:33:3: note: expanded from macro '__cmp_once'
__cmp(unique_x, unique_y, op); })
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/minmax.h:28:26: note: expanded from macro '__cmp'
#define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
^~~
drivers/hwmon/lm75.h:27:14: note: '?' condition is true
int ntemp = clamp_val(temp, LM75_TEMP_MIN, LM75_TEMP_MAX);
^
include/linux/minmax.h:137:32: note: expanded from macro 'clamp_val'
#define clamp_val(val, lo, hi) clamp_t(typeof(val), val, lo, hi)
^
include/linux/minmax.h:124:36: note: expanded from macro 'clamp_t'
#define clamp_t(type, val, lo, hi) min_t(type, max_t(type, val, lo), hi)
^
include/linux/minmax.h:104:27: note: expanded from macro 'min_t'
#define min_t(type, x, y) __careful_cmp((type)(x), (type)(y), <)
^
include/linux/minmax.h:38:3: note: expanded from macro '__careful_cmp'
__cmp_once(x, y, __UNIQUE_ID(__x), __UNIQUE_ID(__y), op))
^
include/linux/minmax.h:33:3: note: expanded from macro '__cmp_once'
__cmp(unique_x, unique_y, op); })
^
include/linux/minmax.h:28:26: note: expanded from macro '__cmp'
#define __cmp(x, y, op) ((x) op (y) ? (x) : (y))
^
drivers/hwmon/lm75.h:29:12: note: 'ntemp' is < 0
ntemp += (ntemp < 0 ? -250 : 250);
^~~~~
drivers/hwmon/lm75.h:29:12: note: '?' condition is true
drivers/hwmon/lm75.h:30:29: note: The result of the left shift is undefined because the left operand is negative
return (u16)((ntemp / 500) << 7);
~~~~~~~~~~~~~ ^
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.
5 warnings generated.
>> drivers/misc/habanalabs/common/irq.c:152:20: warning: Value stored to 'hdev' during its initialization is never read [clang-analyzer-deadcode.DeadStores]
struct hl_device *hdev = job->hdev;
^~~~ ~~~~~~~~~
drivers/misc/habanalabs/common/irq.c:152:20: note: Value stored to 'hdev' during its initialization is never read
struct hl_device *hdev = job->hdev;
^~~~ ~~~~~~~~~
Suppressed 4 warnings (3 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.
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.
5 warnings generated.
drivers/misc/habanalabs/common/command_submission.c:2488:21: warning: Access to field 'timestamp' results in a dereference of a null pointer (loaded from variable 'fence') [clang-analyzer-core.NullDereference]
(ktime_compare(fence->timestamp, first_cs_time) < 0))
^
drivers/misc/habanalabs/common/command_submission.c:3284:6: note: Assuming the condition is false
if (!hl_device_operational(hpriv->hdev, NULL))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:3284:2: note: Taking false branch
if (!hl_device_operational(hpriv->hdev, NULL))
^
drivers/misc/habanalabs/common/command_submission.c:3287:6: note: Assuming the condition is false
if (flags & HL_WAIT_CS_FLAGS_INTERRUPT)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:3287:2: note: Taking false branch
if (flags & HL_WAIT_CS_FLAGS_INTERRUPT)
^
drivers/misc/habanalabs/common/command_submission.c:3289:11: note: Assuming the condition is true
else if (flags & HL_WAIT_CS_FLAGS_MULTI_CS)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:3289:7: note: Taking true branch
else if (flags & HL_WAIT_CS_FLAGS_MULTI_CS)
^
drivers/misc/habanalabs/common/command_submission.c:3290:8: note: Calling 'hl_multi_cs_wait_ioctl'
rc = hl_multi_cs_wait_ioctl(hpriv, data);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2678:6: note: Assuming field 'supports_wait_for_multi_cs' is not equal to 0
if (!hdev->supports_wait_for_multi_cs) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2678:2: note: Taking false branch
if (!hdev->supports_wait_for_multi_cs) {
^
drivers/misc/habanalabs/common/command_submission.c:2685:6: note: Assuming 'seq_arr_len' is <= HL_WAIT_MULTI_CS_LIST_MAX_LEN
if (seq_arr_len > HL_WAIT_MULTI_CS_LIST_MAX_LEN) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2685:2: note: Taking false branch
if (seq_arr_len > HL_WAIT_MULTI_CS_LIST_MAX_LEN) {
^
drivers/misc/habanalabs/common/command_submission.c:2693:3: note: Calling 'kmalloc_array'
kmalloc_array(seq_arr_len, sizeof(*cs_seq_arr), GFP_KERNEL);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/slab.h:617:2: note: Taking false branch
if (unlikely(check_mul_overflow(n, size, &bytes)))
^
include/linux/slab.h:619:30: note: Left side of '&&' is false
if (__builtin_constant_p(n) && __builtin_constant_p(size))
^
include/linux/slab.h:621:2: note: Returning pointer, which participates in a condition later
return __kmalloc(bytes, flags);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2693:3: note: Returning from 'kmalloc_array'
kmalloc_array(seq_arr_len, sizeof(*cs_seq_arr), GFP_KERNEL);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2694:6: note: Assuming 'cs_seq_arr' is non-null
if (!cs_seq_arr)
^~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2694:2: note: Taking false branch
if (!cs_seq_arr)
^
drivers/misc/habanalabs/common/command_submission.c:2700:6: note: Calling 'copy_from_user'
if (copy_from_user(cs_seq_arr, seq_arr, size_to_copy)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/uaccess.h:191:13: note: Calling 'check_copy_size'
if (likely(check_copy_size(to, n, false)))
^
include/linux/compiler.h:77:40: note: expanded from macro 'likely'
# define likely(x) __builtin_expect(!!(x), 1)
^
include/linux/thread_info.h:221:15: note: Assuming 'sz' is >= 0
if (unlikely(sz >= 0 && sz < bytes)) {
^
include/linux/compiler.h:78:42: note: expanded from macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
include/linux/thread_info.h:221:15: note: Left side of '&&' is true
if (unlikely(sz >= 0 && sz < bytes)) {
^
include/linux/thread_info.h:221:26: note: Assuming 'sz' is < 'bytes'
if (unlikely(sz >= 0 && sz < bytes)) {
^
include/linux/compiler.h:78:42: note: expanded from macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
include/linux/thread_info.h:221:2: note: Taking true branch
if (unlikely(sz >= 0 && sz < bytes)) {
--
^~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2700:6: note: Returning from 'copy_from_user'
if (copy_from_user(cs_seq_arr, seq_arr, size_to_copy)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2700:6: note: Assuming the condition is false
if (copy_from_user(cs_seq_arr, seq_arr, size_to_copy)) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2700:2: note: Taking false branch
if (copy_from_user(cs_seq_arr, seq_arr, size_to_copy)) {
^
drivers/misc/habanalabs/common/command_submission.c:2707:14: note: Calling 'kmalloc_array'
fence_arr = kmalloc_array(seq_arr_len, sizeof(*fence_arr), GFP_KERNEL);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/slab.h:617:2: note: Taking false branch
if (unlikely(check_mul_overflow(n, size, &bytes)))
^
include/linux/slab.h:619:30: note: Left side of '&&' is false
if (__builtin_constant_p(n) && __builtin_constant_p(size))
^
include/linux/slab.h:621:2: note: Returning pointer, which participates in a condition later
return __kmalloc(bytes, flags);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2707:14: note: Returning from 'kmalloc_array'
fence_arr = kmalloc_array(seq_arr_len, sizeof(*fence_arr), GFP_KERNEL);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2708:6: note: Assuming 'fence_arr' is non-null
if (!fence_arr) {
^~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2708:2: note: Taking false branch
if (!fence_arr) {
^
drivers/misc/habanalabs/common/command_submission.c:2724:6: note: Calling 'IS_ERR'
if (IS_ERR(mcs_compl)) {
^~~~~~~~~~~~~~~~~
include/linux/err.h:36:9: note: Assuming the condition is false
return IS_ERR_VALUE((unsigned long)ptr);
^
include/linux/err.h:22:34: note: expanded from macro 'IS_ERR_VALUE'
#define IS_ERR_VALUE(x) unlikely((unsigned long)(void *)(x) >= (unsigned long)-MAX_ERRNO)
~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler.h:78:42: note: expanded from macro 'unlikely'
# define unlikely(x) __builtin_expect(!!(x), 0)
^
include/linux/err.h:36:2: note: Returning zero, which participates in a condition later
return IS_ERR_VALUE((unsigned long)ptr);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2724:6: note: Returning from 'IS_ERR'
if (IS_ERR(mcs_compl)) {
^~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2724:2: note: Taking false branch
if (IS_ERR(mcs_compl)) {
^
drivers/misc/habanalabs/common/command_submission.c:2731:7: note: Calling 'hl_cs_poll_fences'
rc = hl_cs_poll_fences(&mcs_data, mcs_compl);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2407:6: note: Assuming 'rc' is 0
if (rc)
^~
drivers/misc/habanalabs/common/command_submission.c:2407:2: note: Taking false branch
if (rc)
^
drivers/misc/habanalabs/common/command_submission.c:2426:14: note: 'i' is < 'arr_len'
for (i = 0; i < arr_len; i++, fence_ptr++) {
^
drivers/misc/habanalabs/common/command_submission.c:2426:2: note: Loop condition is true. Entering loop body
for (i = 0; i < arr_len; i++, fence_ptr++) {
^
drivers/misc/habanalabs/common/command_submission.c:2427:3: note: 'fence' initialized here
struct hl_fence *fence = *fence_ptr;
^~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:2441:7: note: Assuming 'fence' is null
if (fence)
^~~~~
drivers/misc/habanalabs/common/command_submission.c:2441:3: note: Taking false branch
if (fence)
^
drivers/misc/habanalabs/common/command_submission.c:2450:7: note: Assuming 'rc' is 0
if (rc) {
^~
drivers/misc/habanalabs/common/command_submission.c:2450:3: note: Taking false branch
if (rc) {
^
drivers/misc/habanalabs/common/command_submission.c:2457:3: note: Control jumps to 'case CS_WAIT_STATUS_COMPLETED:' @line 2461
switch (status) {
^
drivers/misc/habanalabs/common/command_submission.c:2470:8: note: 'fence' is null
if (fence && !fence->mcs_handling_done) {
^~~~~
drivers/misc/habanalabs/common/command_submission.c:2470:14: note: Left side of '&&' is false
if (fence && !fence->mcs_handling_done) {
^
drivers/misc/habanalabs/common/command_submission.c:2487:18: note: Field 'update_ts' is 1
if (mcs_data->update_ts &&
^
drivers/misc/habanalabs/common/command_submission.c:2487:8: note: Left side of '&&' is true
if (mcs_data->update_ts &&
^
drivers/misc/habanalabs/common/command_submission.c:2488:21: note: Access to field 'timestamp' results in a dereference of a null pointer (loaded from variable 'fence')
(ktime_compare(fence->timestamp, first_cs_time) < 0))
^~~~~
>> drivers/misc/habanalabs/common/command_submission.c:3267:6: warning: Branch condition evaluates to a garbage value [clang-analyzer-core.uninitialized.Branch]
if (timestamp) {
^
drivers/misc/habanalabs/common/command_submission.c:3284:6: note: Assuming the condition is false
if (!hl_device_operational(hpriv->hdev, NULL))
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:3284:2: note: Taking false branch
if (!hl_device_operational(hpriv->hdev, NULL))
^
drivers/misc/habanalabs/common/command_submission.c:3287:6: note: Assuming the condition is true
if (flags & HL_WAIT_CS_FLAGS_INTERRUPT)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:3287:2: note: Taking true branch
if (flags & HL_WAIT_CS_FLAGS_INTERRUPT)
^
drivers/misc/habanalabs/common/command_submission.c:3288:8: note: Calling 'hl_interrupt_wait_ioctl'
rc = hl_interrupt_wait_ioctl(hpriv, data);
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:3221:2: note: 'timestamp' declared without an initial value
u64 timestamp;
^~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:3226:6: note: Assuming field 'user_interrupt_count' is not equal to 0
if (!prop->user_interrupt_count) {
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:3226:2: note: Taking false branch
if (!prop->user_interrupt_count) {
^
drivers/misc/habanalabs/common/command_submission.c:3231:17: note: Taking false branch
interrupt_id = FIELD_GET(HL_WAIT_CS_FLAGS_INTERRUPT_MASK, args->in.flags);
^
include/linux/bitfield.h:125:3: note: expanded from macro 'FIELD_GET'
__BF_FIELD_CHECK(_mask, _reg, 0U, "FIELD_GET: "); \
^
include/linux/bitfield.h:62:3: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask), \
^
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:346:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:334:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:326:3: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^
drivers/misc/habanalabs/common/command_submission.c:3231:17: note: Loop condition is false. Exiting loop
interrupt_id = FIELD_GET(HL_WAIT_CS_FLAGS_INTERRUPT_MASK, args->in.flags);
^
include/linux/bitfield.h:125:3: note: expanded from macro 'FIELD_GET'
__BF_FIELD_CHECK(_mask, _reg, 0U, "FIELD_GET: "); \
^
include/linux/bitfield.h:62:3: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG(!__builtin_constant_p(_mask), \
^
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:346:2: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
^
include/linux/compiler_types.h:334:2: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
^
include/linux/compiler_types.h:318:2: note: expanded from macro '__compiletime_assert'
do { \
^
drivers/misc/habanalabs/common/command_submission.c:3231:17: note: -1048576 is not equal to 0
interrupt_id = FIELD_GET(HL_WAIT_CS_FLAGS_INTERRUPT_MASK, args->in.flags);
^
include/linux/bitfield.h:125:3: note: expanded from macro 'FIELD_GET'
__BF_FIELD_CHECK(_mask, _reg, 0U, "FIELD_GET: "); \
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/bitfield.h:64:20: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG((_mask) == 0, _pfx "mask is zero"); \
~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/build_bug.h:39:58: note: expanded from macro 'BUILD_BUG_ON_MSG'
#define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~
include/linux/compiler_types.h:346:22: note: expanded from macro 'compiletime_assert'
_compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:334:23: note: expanded from macro '_compiletime_assert'
__compiletime_assert(condition, msg, prefix, suffix)
~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/compiler_types.h:326:9: note: expanded from macro '__compiletime_assert'
if (!(condition)) \
^~~~~~~~~
drivers/misc/habanalabs/common/command_submission.c:3231:17: note: Taking false branch
interrupt_id = FIELD_GET(HL_WAIT_CS_FLAGS_INTERRUPT_MASK, args->in.flags);
^
include/linux/bitfield.h:125:3: note: expanded from macro 'FIELD_GET'
__BF_FIELD_CHECK(_mask, _reg, 0U, "FIELD_GET: "); \
^
include/linux/bitfield.h:64:3: note: expanded from macro '__BF_FIELD_CHECK'
BUILD_BUG_ON_MSG((_mask) == 0, _pfx "mask is zero"); \
^
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)
vim +/hdev +152 drivers/misc/habanalabs/common/irq.c
9494a8dd8d22cb drivers/misc/habanalabs/irq.c Oded Gabbay 2019-02-16 139
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 140 /*
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 141 * hl_ts_free_objects - handler of the free objects workqueue.
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 142 * This function should put refcount to objects that the registration node
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 143 * took refcount to them.
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 144 * @work: workqueue object pointer
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 145 */
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 146 static void hl_ts_free_objects(struct work_struct *work)
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 147 {
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 148 struct timestamp_reg_work_obj *job =
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 149 container_of(work, struct timestamp_reg_work_obj, free_obj);
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 150 struct timestamp_reg_free_node *free_obj, *temp_free_obj;
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 151 struct list_head *free_list_head = job->free_obj_head;
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 @152 struct hl_device *hdev = job->hdev;
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 153
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 154 list_for_each_entry_safe(free_obj, temp_free_obj, free_list_head, free_objects_node) {
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 155 dev_dbg(hdev->dev, "About to put refcount to ts_buff (%p) cq_cb(%p)\n",
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 156 free_obj->ts_buff,
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 157 free_obj->cq_cb);
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 158
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 159 hl_ts_put(free_obj->ts_buff);
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 160 hl_cb_put(free_obj->cq_cb);
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 161 kfree(free_obj);
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 162 }
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 163
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 164 kfree(free_list_head);
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 165 kfree(job);
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 166 }
402f801a3488a9 drivers/misc/habanalabs/common/irq.c farah kassabri 2021-12-23 167
---
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2022-01-30 11:35 [ogabbay:habanalabs-next 32/33] drivers/misc/habanalabs/common/irq.c:152:20: warning: Value stored to 'hdev' during its initialization is never read [clang-analyzer-deadcode.DeadStores] kernel test robot
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