handle_userfault identifier - Linux source code next-20260811

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  - next-20260811

Defined in 1 files as a prototype:

include/linux/userfaultfd_k.h, line 85 (as a prototype)

Defined in 2 files as a function:

Referenced in 4 files:

Smatch caller information:

mm/huge_memory.c __do_huge_pmd_anonymous_page() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	2900308121553498112
PARAM_VALUE	0	vmf->address	0,4096-u64max
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	0-4950
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pmd	4096-ptr_max
PARAM_VALUE	0	vmf->pte	0
PARAM_VALUE	0	vmf->ptl	4096-ptr_max
PARAM_VALUE	0	vmf->ptl->rlock.dep_map->name	0-255
PARAM_VALUE	0	vmf->pud	4096-ptr_max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->anon_vma_chain.next	4096-ptr_max
PARAM_VALUE	0	vmf->vma->anon_vma_chain.next->next	4096-ptr_max
PARAM_VALUE	0	vmf->vma->anon_vma_chain.next->prev	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.dep_map->name	0-255
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->type	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->page_table_lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	vmf->vma->vm_ops	0
PARAM_VALUE	0	vmf->vma->vm_start	0
PARAM_VALUE	1	reason	512
BUF_SIZE	0	vmf->vma	(-1),1-s32max
CAPPED_DATA	0	vmf->vma	1
DATA_SOURCE	0	vmf	$0
BIT_INFO	0	vmf->address	0x0,0xfffffffffffff000
BIT_INFO	0	vmf->gfp_mask	0xc0,0xffffffffffffffff
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0,4096-u64max[c]
USER_DATA	0	vmf->pgoff	0-13510801029595132[c]
USER_DATA	0	vmf->real_address	0-u64max[c]
HALF_LOCKED2		&mm->mmap_lock
HALF_LOCKED2		&pool->lock

mm/huge_memory.c do_huge_pmd_anonymous_page() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	2900308121553498112
PARAM_VALUE	0	vmf->address	0,4096-u64max
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	0-4950
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pmd	4096-ptr_max
PARAM_VALUE	0	vmf->pte	0
PARAM_VALUE	0	vmf->ptl	4096-ptr_max
PARAM_VALUE	0	vmf->ptl->rlock.dep_map->name	0-255
PARAM_VALUE	0	vmf->pud	4096-ptr_max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->anon_vma_chain.next	4096-ptr_max
PARAM_VALUE	0	vmf->vma->anon_vma_chain.next->next	4096-ptr_max
PARAM_VALUE	0	vmf->vma->anon_vma_chain.next->prev	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.dep_map->name	0-255
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->type	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->page_table_lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	vmf->vma->vm_ops	0
PARAM_VALUE	0	vmf->vma->vm_start	0
PARAM_VALUE	1	reason	512
CAPPED_DATA	0	vmf->vma	1
DATA_SOURCE	0	vmf	$0
BIT_INFO	0	vmf->flags	0x0,0x1ffe
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0,4096-u64max[c]
USER_DATA	0	vmf->pgoff	0-9007199254740990[c]
USER_DATA	0	vmf->real_address	0-u64max
HALF_LOCKED2		&mm->mmap_lock
HALF_LOCKED2		&pool->lock

mm/huge_memory.c do_huge_pmd_uffd_rwp() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	2900308121553498112
PARAM_VALUE	0	vmf->address	0,4096-u64max
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	0-4950
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pmd	4096-ptr_max
PARAM_VALUE	0	vmf->pte	0
PARAM_VALUE	0	vmf->ptl	0
PARAM_VALUE	0	vmf->pud	4096-ptr_max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	1	reason	8796093022208
DATA_SOURCE	0	vmf	$0
NOSPEC	0	vmf->real_address
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0,4096-u64max[c]
USER_DATA	0	vmf->pgoff	0-13510801029595132[c]
USER_DATA	0	vmf->real_address	0-u64max[c]
HALF_LOCKED2		&mm->mmap_lock
HALF_LOCKED2		&pool->lock

mm/shmem.c shmem_get_folio_gfp() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	4096-ptr_max
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_file	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_file->f_inode->i_mapping	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->type	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->vma_writer_wait.task->sched_class->uclamp_enabled	0-1
PARAM_VALUE	1	reason	2199023255552
BUF_SIZE	0	vmf->cow_page	(-1),64
CAPPED_DATA	0	vmf->vma	1
DATA_SOURCE	0	vmf	$6
NOSPEC	0	vmf->address
NOSPEC	0	vmf->pgoff
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0-u64max[c]
USER_DATA	0	vmf->pgoff	0-4503599627370495
USER_DATA	0	vmf->pte	4096-ptr_max[u]
USER_DATA	0	vmf->real_address	0-u64max[c]
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_end
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_pgoff
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_start

mm/shmem.c shmem_get_folio_gfp() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	4096-ptr_max
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_file	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_file->f_inode->i_mapping	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->type	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->vma_writer_wait.task->sched_class->uclamp_enabled	0-1
PARAM_VALUE	1	reason	512
BUF_SIZE	0	vmf->cow_page	(-1),64
CAPPED_DATA	0	vmf->vma	1
DATA_SOURCE	0	vmf	$6
NOSPEC	0	vmf->address
NOSPEC	0	vmf->pgoff
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0-u64max[c]
USER_DATA	0	vmf->pgoff	0-4503599627370495
USER_DATA	0	vmf->pte	4096-ptr_max[u]
USER_DATA	0	vmf->real_address	0-u64max[c]
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_end
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_pgoff
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_start

mm/hugetlb.c hugetlb_fault() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	8740012632822697984
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	1-4950
PARAM_VALUE	0	vmf->gfp_mask	0
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pgoff	0-36028797018963967
PARAM_VALUE	0	vmf->pmd	0
PARAM_VALUE	0	vmf->pte	4096-ptr_max
PARAM_VALUE	0	vmf->ptl	4096-ptr_max
PARAM_VALUE	0	vmf->pud	0
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	1	reason	4096
NOSPEC	0	vmf->real_address
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0-u64max[c]
USER_DATA	0	vmf->pgoff	0-36028797018963967[c]
USER_DATA	0	vmf->real_address	0-u64max
HALF_LOCKED2		&mm->mmap_lock

mm/hugetlb.c hugetlb_handle_userfault() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	8740012632822697984
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	0-4950
PARAM_VALUE	0	vmf->gfp_mask	0
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pgoff	0-36028797018963967
PARAM_VALUE	0	vmf->pmd	0
PARAM_VALUE	0	vmf->pte	4096-ptr_max
PARAM_VALUE	0	vmf->ptl	0
PARAM_VALUE	0	vmf->pud	0
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_private_data->rw_sema.dep_map->name	0-255
PARAM_VALUE	0	vmf->vma->vm_private_data->rw_sema.first_waiter->handoff_set	1
PARAM_VALUE	0	vmf->vma->vm_private_data->rw_sema.first_waiter->type	0-1
PARAM_VALUE	1	reason	512,2199023255552,8796093022208
CAPPED_DATA	0	vmf->pgoff	1
CAPPED_DATA	0	vmf->pte	1
DATA_SOURCE	0	vmf	$0
DATA_SOURCE	1	reason	$2
NOSPEC	0	vmf->pgoff
NOSPEC	0	vmf->real_address
HARD_MAX	1	reason	8796093022208
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0-u64max[c]
USER_DATA	0	vmf->pgoff	0-36028797018963967[c]
USER_DATA	0	vmf->real_address	0-u64max
HALF_LOCKED2		&mm->mmap_lock
HALF_LOCKED2		&pool->lock

mm/memory.c do_anonymous_page() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	2508977417524461568,2900308121553498112
PARAM_VALUE	0	vmf->address	0,4096-u64max
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	0-6998
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pmd	4096-ptr_max
PARAM_VALUE	0	vmf->prealloc_pte	0
PARAM_VALUE	0	vmf->pte	4096-ptr_max
PARAM_VALUE	0	vmf->ptl	4096-ptr_max
PARAM_VALUE	0	vmf->ptl->rlock.dep_map->name	0-255
PARAM_VALUE	0	vmf->pud	0,4096-ptr_max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_ops	0
PARAM_VALUE	1	reason	512
BUF_SIZE	0	vmf->vma	(-1),1-s32max
CAPPED_DATA	0	vmf->address	1
CAPPED_DATA	0	vmf->vma	1
DATA_SOURCE	0	vmf	$0
BIT_INFO	0	vmf->flags	0x0,0x1ffe
NOSPEC	0	vmf->address
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0,4096-u64max[c]
USER_DATA	0	vmf->pgoff	0-13510801029595132[c]
USER_DATA	0	vmf->real_address	0-u64max[c]
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_pgoff
HALF_LOCKED2		&mm->mmap_lock

mm/memory.c do_anonymous_page() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	2508977417524461568,2900308121553498112
PARAM_VALUE	0	vmf->address	0,4096-u64max
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	0-6998
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pmd	4096-ptr_max
PARAM_VALUE	0	vmf->prealloc_pte	0
PARAM_VALUE	0	vmf->pte	4096-ptr_max
PARAM_VALUE	0	vmf->ptl	4096-ptr_max
PARAM_VALUE	0	vmf->ptl->rlock.dep_map->name	0-255
PARAM_VALUE	0	vmf->pud	0,4096-ptr_max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->anon_vma_chain.next	4096-ptr_max
PARAM_VALUE	0	vmf->vma->anon_vma_chain.next->next	4096-ptr_max
PARAM_VALUE	0	vmf->vma->anon_vma_chain.next->prev	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.dep_map->name	0-255
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->type	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->page_table_lock.rlock.dep_map->name	0-255
PARAM_VALUE	0	vmf->vma->vm_ops	0
PARAM_VALUE	1	reason	512
BUF_SIZE	0	vmf->vma	(-1),1-s32max
CAPPED_DATA	0	vmf->address	1
CAPPED_DATA	0	vmf->vma	1
DATA_SOURCE	0	vmf	$0
NOSPEC	0	vmf->address
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0,4096-u64max[c]
USER_DATA	0	vmf->pgoff	0-13510801029595132[c]
USER_DATA	0	vmf->real_address	0-u64max[c]
USER_DATA	0	vmf->vma->vm_policy->flags	0,24,8192-57368[c]
USER_DATA	0	vmf->vma->vm_policy->home_node	0-1023
USER_DATA	0	vmf->vma->vm_policy->mode	2-3,5-u16max
NO_OVERFLOW_SIMPLE	0	vmf->vma->vm_pgoff
HALF_LOCKED2		&mm->mmap_lock

mm/memory.c do_uffd_rwp() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	2900308121553498112
PARAM_VALUE	0	vmf->address	0,4096-u64max
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	2048-6998
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pmd	4096-ptr_max
PARAM_VALUE	0	vmf->prealloc_pte	0
PARAM_VALUE	0	vmf->pte	4096-ptr_max
PARAM_VALUE	0	vmf->pud	4096-ptr_max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_flags	1-u64max
PARAM_VALUE	1	reason	8796093022208
DATA_SOURCE	0	vmf	$0
BIT_INFO	0	vmf->flags	0x800,0x1fff
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0,4096-u64max[c]
USER_DATA	0	vmf->pgoff	0-9007199254740990[c]
USER_DATA	0	vmf->real_address	0-u64max
HALF_LOCKED2		&mm->mmap_lock
HALF_LOCKED2		&pool->lock

mm/memory.c do_wp_page() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	2508977417524461568,2900308121553498112
PARAM_VALUE	0	vmf->address	0,4096-u64max
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	4,2048-6998
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pmd	4096-ptr_max
PARAM_VALUE	0	vmf->prealloc_pte	0
PARAM_VALUE	0	vmf->pte	4096-ptr_max
PARAM_VALUE	0	vmf->ptl	4096-ptr_max
PARAM_VALUE	0	vmf->ptl->rlock.dep_map->name	0-255
PARAM_VALUE	0	vmf->pud	0,4096-ptr_max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_file->f_mapping->host->i_sb->s_export_op->fh_to_dentry	0,8684,447817974243774464,687732489194512384,742201802719268864,868497899885588480,1471448175530500096,2021658383390310400,2445877819203563520,2512819722689847296,2649270699546726400,2761259683714371584,2893332316235677696-s64max
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->handoff_set	0-1
PARAM_VALUE	0	vmf->vma->vm_mm->mmap_lock.first_waiter->type	0-1
PARAM_VALUE	1	reason	4096
BUF_SIZE	0	vmf->vma	(-1),1-s32max
CAPPED_DATA	0	vmf->vma	1
DATA_SOURCE	0	vmf	$0
NOSPEC	0	vmf->address
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0,4096-u64max[c]
USER_DATA	0	vmf->pgoff	0-13510801029595132[c]
USER_DATA	0	vmf->real_address	0-u64max
HALF_LOCKED2		&mm->mmap_lock

mm/memory.c wp_huge_pmd() -> handle_userfault()

Type	Parameter	Key	Value
PARAM_VALUE	0	vmf	2900308121553498112
PARAM_VALUE	0	vmf->address	0,4096-u64max
PARAM_VALUE	0	vmf->cow_page	0
PARAM_VALUE	0	vmf->flags	0-4950
PARAM_VALUE	0	vmf->gfp_mask	0,64-u32max
PARAM_VALUE	0	vmf->page	0
PARAM_VALUE	0	vmf->pmd	4096-ptr_max
PARAM_VALUE	0	vmf->pte	0
PARAM_VALUE	0	vmf->ptl	0
PARAM_VALUE	0	vmf->pud	4096-ptr_max
PARAM_VALUE	0	vmf->vma	4096-ptr_max
PARAM_VALUE	0	vmf->vma->vm_ops	0
PARAM_VALUE	1	reason	4096
DATA_SOURCE	0	vmf	$0
NOSPEC	0	vmf->real_address
RX_PATH
TASK_NOT_RUNNING
USER_DATA	0	vmf->address	0,4096-u64max[c]
USER_DATA	0	vmf->pgoff	0-13510801029595132[c]
USER_DATA	0	vmf->real_address	0-u64max[c]
HALF_LOCKED2		&mm->mmap_lock
HALF_LOCKED2		&pool->lock