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Defined in 2 files as a function:

Referenced in 4 files:

Smatch caller information:

mm/mprotect.c maybe_change_pte_writable() -> userfaultfd_pte_wp()

Type Parameter Key Value
PARAM_VALUE 0 vma 4096-ptr_max
PARAM_VALUE 0 vma->flags.__vma_flags 4096-ptr_max
BUF_SIZE 0 vma (-1),4,24,64,168-s32max
BUF_SIZE 0 vma (-1),4,24,64,168-s32max
DATA_SOURCE 0 vma $0
DATA_SOURCE 1 pte $1
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
USER_DATA 0 vma->vm_end 1-u64max[c]
USER_DATA 0 vma->vm_start 1-u64max[c]
NO_OVERFLOW_SIMPLE 0 vma->vm_file->f_mapping->host->i_bytes
NO_OVERFLOW_SIMPLE 0 vma->vm_pgoff
NO_OVERFLOW_SIMPLE 0 vma->vm_start
HALF_LOCKED2 &mm->mmap_lock
HALF_LOCKED2 ptl

mm/memory.c do_swap_page() -> userfaultfd_pte_wp()

Type Parameter Key Value
PARAM_VALUE 0 vma 4096-ptr_max
BIT_INFO 0 vma->vm_flags 0x2,0xffffffffffffffff
RX_PATH
TASK_NOT_RUNNING
USER_DATA 0 vma->vm_policy->flags 0,24,8192-57368[c]
USER_DATA 0 vma->vm_policy->home_node 0-1023
USER_DATA 0 vma->vm_policy->mode 2-3,5-u16max
LOCK2 vmf->ptl
HALF_LOCKED2 &mm->mmap_lock

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

Type Parameter Key Value
PARAM_VALUE 0 vma 4096-ptr_max
BUF_SIZE 0 vma (-1),1-s32max
BUF_SIZE 0 vma (-1),1-s32max
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
LOCK2 vmf->ptl
HALF_LOCKED2 &mm->mmap_lock
HALF_LOCKED2 rcu_read

mm/memory.c zap_present_folio_ptes() -> userfaultfd_pte_wp()

Type Parameter Key Value
PARAM_VALUE 0 vma 4096-ptr_max
PARAM_VALUE 0 vma->flags.__vma_flags 4096-ptr_max
BUF_SIZE 0 vma (-1),1-s32max
BUF_SIZE 0 vma (-1),1-s32max
BUF_SIZE 0 vma->vm_mm (-1),1-s32max
BUF_SIZE 0 vma->vm_ops (-1),144
BUF_SIZE 0 vma->vm_private_data s32min-(-1),1-s32max
DATA_SOURCE 0 vma $1
DATA_SOURCE 1 pte $5 [m]
NOSPEC 0 vma->vm_end
NOSPEC 0 vma->vm_pgoff
NOSPEC 0 vma->vm_start
RX_PATH
TASK_NOT_RUNNING
USER_DATA 0 vma->pfnmap_track_ctx->pfn 0-9007201402224637[c]
USER_DATA 0 vma->pfnmap_track_ctx->size 0,4096-u64max[c]
USER_DATA 0 vma->shared.rb_subtree_last 0-u64max[u]
USER_DATA 0 vma->vm_end 0-u64max
USER_DATA 0 vma->vm_pgoff 0-9007201402224637[c]
USER_DATA 0 vma->vm_start 0-u64max
NO_OVERFLOW_SIMPLE 0 vma->vm_file->f_mapping->host->i_size
NO_OVERFLOW_SIMPLE 0 vma->vm_policy->mode
UNITS 0 vma unit_byte
LOCK2 ptl
HALF_LOCKED2 &mm->mmap_lock

mm/memory.c zap_present_ptes() -> userfaultfd_pte_wp()

Type Parameter Key Value
PARAM_VALUE 0 vma 4096-ptr_max
PARAM_VALUE 0 vma->flags.__vma_flags 4096-ptr_max
BUF_SIZE 0 vma (-1),1-s32max
BUF_SIZE 0 vma (-1),1-s32max
BUF_SIZE 0 vma->vm_mm (-1),1-s32max
BUF_SIZE 0 vma->vm_ops (-1),144
BUF_SIZE 0 vma->vm_private_data s32min-(-1),1-s32max
DATA_SOURCE 0 vma $1
DATA_SOURCE 1 pte $3
NOSPEC 0 vma->vm_end
NOSPEC 0 vma->vm_pgoff
NOSPEC 0 vma->vm_start
RX_PATH
TASK_NOT_RUNNING
USER_DATA 0 vma->pfnmap_track_ctx->pfn 0-9007201402224637[c]
USER_DATA 0 vma->pfnmap_track_ctx->size 0,4096-u64max[c]
USER_DATA 0 vma->shared.rb_subtree_last 0-u64max[u]
USER_DATA 0 vma->vm_end 0-u64max
USER_DATA 0 vma->vm_pgoff 0-9007201402224637[c]
USER_DATA 0 vma->vm_start 0-u64max
NO_OVERFLOW_SIMPLE 0 vma->vm_file->f_mapping->host->i_size
NO_OVERFLOW_SIMPLE 0 vma->vm_policy->mode
UNITS 0 vma unit_byte
LOCK2 ptl
HALF_LOCKED2 &mm->mmap_lock

mm/gup.c can_follow_write_pte() -> userfaultfd_pte_wp()

Type Parameter Key Value
PARAM_VALUE 0 vma 4096-ptr_max
DATA_SOURCE 0 vma $2
DATA_SOURCE 1 pte $0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NO_OVERFLOW_SIMPLE 0 vma->vm_file->f_mapping->host->i_size
LOCK2 ptl
HALF_LOCKED2 &mm->mmap_lock

kernel/events/uprobes.c __uprobe_write() -> userfaultfd_pte_wp()

Type Parameter Key Value
PARAM_VALUE 0 vma 4096-ptr_max
PARAM_VALUE 0 vma->flags.__vma_flags 4096-ptr_max
CAPPED_DATA 0 vma->vm_end 1
CAPPED_DATA 0 vma->vm_start 1
DATA_SOURCE 0 vma $0
NOSPEC 0 vma->vm_pgoff
NOSPEC 0 vma->vm_start
RX_PATH
TASK_NOT_RUNNING
USER_DATA 0 vma->shared.rb_subtree_last 0-u64max[u]
USER_DATA 0 vma->vm_pgoff 0-4503599627370495[c]
USER_DATA 0 vma->vm_start 0-s32max,9223372036854775807[c]
NO_OVERFLOW_SIMPLE 0 vma->vm_end
NO_OVERFLOW_SIMPLE 0 vma->vm_pgoff
HALF_LOCKED2 &mm->mmap_lock
HALF_LOCKED2 &uprobe->register_rwsem