Defined in 2 files as a function:
- include/linux/mmap_lock.h, line 590 (as a function)
- tools/testing/vma/include/stubs.h, line 151 (as a function)
Referenced in 5 files:
- arch/um/kernel/trap.c, line 128
- drivers/gpu/drm/amd/amdkfd/kfd_svm.c
- mm/mmap.c
- mm/mmap_lock.c, line 543
- mm/vma.c, line 1420
Smatch caller information:
mm/mmap.c expand_stack() -> mmap_write_downgrade()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | mm | 4096-ptr_max |
| PARAM_VALUE | 0 | mm->mmap_lock.dep_map->name | 0-255 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->handoff_set | 1 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.next | 2212933610777083904,2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.prev | 2212933610777083904,2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->type | 0-1 |
| PARAM_VALUE | 0 | mm->mmap_lock.osq.tail.counter | 0-s32max |
| BUF_SIZE | 0 | mm | s32min-(-1),1-s32max |
| BUF_SIZE | 0 | mm | s32min-(-1),1-s32max |
| DATA_SOURCE | 0 | mm | $0 |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| LOCK2 | 0 | &mm->mmap_lock | |
| TYPE_LOCK | (struct mm_struct)->mmap_lock |
mm/mmap.c mmap_read_lock_maybe_expand() -> mmap_write_downgrade()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | mm | 4096-ptr_max |
| PARAM_VALUE | 0 | mm->map_count | (-1)-s32max |
| PARAM_VALUE | 0 | mm->mmap_lock.dep_map->name | 0-255 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.next | 2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.prev | 2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->type | 0-1 |
| PARAM_VALUE | 0 | mm->mmap_lock.osq.tail.counter | 0-s32max |
| PARAM_VALUE | 0 | mm->stack_vm | 1 |
| PARAM_VALUE | 0 | mm->total_vm | 1 |
| DATA_SOURCE | 0 | mm | $0 |
| NOCHECK_CALL | |||
| LOCK2 | 0 | &mm->mmap_lock | |
| TYPE_LOCK | (struct mm_struct)->mmap_lock |
mm/vma.c vms_complete_munmap_vmas() -> mmap_write_downgrade()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | mm | 4096-ptr_max |
| PREEMPT_ADD | |||
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| UNITS | 0 | mm | unit_byte |
| HALF_LOCKED2 | &mm->mmap_lock |
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c svm_range_restore_pages() -> mmap_write_downgrade()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | mm | 4096-ptr_max |
| PARAM_VALUE | 0 | mm->mmap_lock.dep_map->name | 0-255 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->handoff_set | 1 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.next | 2212933610777083904,2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.prev | 2212933610777083904,2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->type | 0-1 |
| PARAM_VALUE | 0 | mm->mmap_lock.osq.tail.counter | 0-s32max |
| PARAM_VALUE | 0 | mm->notifier_subscriptions->has_itree | 0-1 |
| DATA_SOURCE | 0 | mm | r get_task_mm |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| LOCK2 | &svms->lock | ||
| LOCK2 | 0 | &mm->mmap_lock | |
| HALF_LOCKED2 | &pool->lock | ||
| TYPE_LOCK | (struct mm_struct)->mmap_lock | ||
| TYPE_LOCK | (struct svm_range_list)->lock |
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c svm_range_restore_pages() -> mmap_write_downgrade()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | mm | 4096-ptr_max |
| PARAM_VALUE | 0 | mm->mmap_lock.dep_map->name | 0-255 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->handoff_set | 1 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.next | 2212933610777083904,2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.prev | 2212933610777083904,2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->type | 0-1 |
| PARAM_VALUE | 0 | mm->mmap_lock.osq.tail.counter | 0-s32max |
| PARAM_VALUE | 0 | mm->notifier_subscriptions->has_itree | 0-1 |
| DATA_SOURCE | 0 | mm | r get_task_mm |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| LOCK2 | &svms->lock | ||
| LOCK2 | 0 | &mm->mmap_lock | |
| HALF_LOCKED2 | &pool->lock | ||
| TYPE_LOCK | (struct mm_struct)->mmap_lock | ||
| TYPE_LOCK | (struct svm_range_list)->lock |
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c svm_range_restore_pages() -> mmap_write_downgrade()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | mm | 4096-ptr_max |
| PARAM_VALUE | 0 | mm->mmap_lock.dep_map->name | 0-255 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->handoff_set | 1 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.next | 2212933610777083904,2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.prev | 2212933610777083904,2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->type | 0-1 |
| PARAM_VALUE | 0 | mm->mmap_lock.osq.tail.counter | 0-s32max |
| PARAM_VALUE | 0 | mm->notifier_subscriptions->has_itree | 0-1 |
| DATA_SOURCE | 0 | mm | r get_task_mm |
| RX_PATH | |||
| TASK_NOT_RUNNING | |||
| NOCHECK_CALL | |||
| LOCK2 | &svms->lock | ||
| LOCK2 | 0 | &mm->mmap_lock | |
| HALF_LOCKED2 | &pool->lock | ||
| TYPE_LOCK | (struct mm_struct)->mmap_lock | ||
| TYPE_LOCK | (struct svm_range_list)->lock |
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_svm.c svm_range_set_attr() -> mmap_write_downgrade()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | mm | 4096-ptr_max |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->handoff_set | 0-1 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->type | 0-1 |
| PARAM_VALUE | 0 | mm->mmap_lock.osq.tail.counter | 0-s32max |
| DATA_SOURCE | 0 | mm | $1 |
| NOCHECK_CALL | |||
| UNITS | 0 | mm | unit_byte |
| LOCK2 | &process_info->lock | ||
| LOCK2 | &svms->lock | ||
| LOCK2 | 0 | &mm->mmap_lock | |
| HALF_LOCKED2 | &p->mutex | ||
| TYPE_LOCK | (struct amdkfd_process_info)->lock | ||
| TYPE_LOCK | (struct mm_struct)->mmap_lock | ||
| TYPE_LOCK | (struct svm_range_list)->lock |
mm/mmap_lock.c lock_mm_and_find_vma() -> mmap_write_downgrade()
| Type | Parameter | Key | Value |
|---|---|---|---|
| PARAM_VALUE | 0 | mm | 4096-ptr_max |
| PARAM_VALUE | 0 | mm->mm_mt.ma_root | 1-u64max |
| PARAM_VALUE | 0 | mm->mmap_lock.dep_map->name | 0-255 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->handoff_set | 1 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.next | 2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->list.prev | 2624917664208203776 |
| PARAM_VALUE | 0 | mm->mmap_lock.first_waiter->type | 0-1 |
| PARAM_VALUE | 0 | mm->mmap_lock.osq.tail.counter | 0-s32max |
| CAPPED_DATA | 0 | mm | 1 |
| CAPPED_DATA | 0 | mm->mm_mt.ma_root | 1 |
| DATA_SOURCE | 0 | mm | $0 |
| NOCHECK_CALL | |||
| UNITS | 0 | mm | unit_byte |
| HALF_LOCKED2 | 0 | &mm->mmap_lock |