memcpy_from_page identifier - Linux source code next-20260811

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- FIXME
  - next-20260811

Defined in 1 files as a function:

include/linux/highmem.h, line 537 (as a function)

Referenced in 22 files:

Smatch caller information:

drivers/vdpa/vdpa_user/iova_domain.c do_bounce() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	1-4096
CAPPED_DATA	3	len	1
DATA_SOURCE	0	to	$1 [m]
FUZZY_MAX	2	offset	0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
LOCK2		&domain->bounce_lock
TYPE_LOCK		(struct vduse_iova_domain)->bounce_lock

drivers/vdpa/vdpa_user/iova_domain.c vduse_domain_remove_user_bounce_pages() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	18379471554275704832,18446612682070032384
PARAM_VALUE	1	page	1-u64max
PARAM_VALUE	2	offset	0
PARAM_VALUE	3	len	4096
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	3	len	unit_byte
LOCK2		&domain->bounce_lock
HALF_LOCKED2		&dev->domain_lock
HALF_LOCKED2		&domain->iotlb_lock
TYPE_LOCK		(struct vduse_iova_domain)->bounce_lock

net/ceph/messenger_v2.c process_v2_sparse_read() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	1-u64max
PARAM_VALUE	0	*to	0-255
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	1-4096
CAPPED_DATA	3	len	1
NOCHECK_CALL
USER_DATA	3	len	1-4095[c]
LOCK2		&con->mutex
LOCK2		&pool->lock
TYPE_LOCK		(struct ceph_connection)->mutex

net/9p/trans_virtio.c handle_rerror() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	1-4096
CAPPED_DATA	3	len	1
DATA_SOURCE	2	offset	$2
FUZZY_MAX	2	offset	0
PARAM_COMPARE	2	offset	== $3
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	2	offset	0-4095[c]
USER_DATA	3	len	1-4096[c]
UNITS	0	to	unit_byte
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte
HALF_LOCKED2		&inode->i_rwsem

net/9p/trans_virtio.c handle_rerror() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	0-2147483646
CAPPED_DATA	3	len	1
DATA_SOURCE	2	offset	$2 [m]
FUZZY_MAX	2	offset	0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	2	offset	0-4095[c]
USER_DATA	3	len	1-2147483646[c][u]
UNITS	0	to	unit_byte
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte
HALF_LOCKED2		&inode->i_rwsem

drivers/block/floppy.c memcpy_from_bvec() -> memcpy_from_page()

Type	Parameter	Key	Value
DATA_SOURCE	0	to	$0
NOCHECK_CALL
UNITS	1	page	unit_page
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte
HALF_LOCKED2		&pool->lock

drivers/md/dm-log-writes.c memcpy_from_bvec() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	18379471554275704832,18446612682070032384
DATA_SOURCE	0	to	$0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	1	page	unit_page
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte
LOCK2		&md->io_barrier
HALF_LOCKED2		&bio->bi_bdev->bd_queue->queue_lock
HALF_LOCKED2		&md->swap_bios_semaphore
TYPE_LOCK		(struct mapped_device)->io_barrier

drivers/block/brd.c brd_rw_bvec() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	1	page	4096-ptr_max
PARAM_VALUE	2	offset	0,512-3584
PARAM_VALUE	3	len	0-4096
CAPPED_DATA	3	len	1
DATA_SOURCE	0	to	r bvec_kmap_local
BIT_INFO	2	offset	0x0,0xe00
NOSPEC	3	len
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HOST_DATA	2	offset	0,512-3584[c]
HOST_DATA	3	len	512-3584,4096[c]
USER_DATA	2	offset	0,512-3584[c]
USER_DATA	3	len	512-3584,4096[c]
UNITS	3	len	unit_byte
HALF_LOCKED2		&bio->bi_bdev->bd_queue->queue_lock

fs/cramfs/inode.c cramfs_blkdev_read() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	1	page	1-u64max
PARAM_VALUE	2	offset	0
PARAM_VALUE	3	len	4096
BUF_SIZE	0	to	(-1),16384
BUF_SIZE	0	to	(-1),16384
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	3	len	unit_byte
LOCK2		global &read_mutex

lib/test_hmm.c dmirror_do_read() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	1-u64max
PARAM_VALUE	1	page	4-u64max
PARAM_VALUE	2	offset	0
PARAM_VALUE	3	len	4096
DATA_SOURCE	1	page	r xa_untag_pointer
NOCHECK_CALL
UNITS	3	len	unit_byte
LOCK2		&dmirror->mutex
TYPE_LOCK		(struct dmirror)->mutex

fs/hfsplus/bnode.c hfsplus_bnode_read() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	0-4096
BUF_SIZE	0	to	(-1),2,4,14,32,64,80,268,510,520
CAPPED_DATA	3	len	1
DATA_SOURCE	0	to	$1
DATA_SOURCE	2	offset	$2 [m]
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	2	offset	0,21-3819[c]
USER_DATA	3	len	1-4096[c]
UNITS	0	to	unit_byte
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte

fs/hfsplus/bnode.c hfsplus_bnode_read() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	4096-u64max
PARAM_VALUE	2	offset	0
PARAM_VALUE	3	len	1-4096
CAPPED_DATA	3	len	1
DATA_SOURCE	0	to	$1
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	3	len	1-4095[c]
UNITS	0	to	unit_byte
UNITS	3	len	unit_byte

fs/ntfs/compress.c ntfs_read_compressed_block() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	1	page	4096-ptr_max
PARAM_VALUE	2	offset	0-4095
BUF_SIZE	1	page	(-1),64
BUF_SIZE	1	page	(-1),64
DATA_SOURCE	1	page	r read_mapping_page
DATA_SOURCE	2	offset	r ntfs_cluster_to_poff
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	3	len	unit_byte
LOCK2		global &ntfs_cb_lock
HALF_LOCKED2		&mapping->invalidate_lock
HALF_LOCKED2		&ni->runlist.lock

drivers/base/firmware_loader/sysfs.c firmware_rw() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	1-u64max
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	1-4096
CAPPED_DATA	3	len	1
DATA_SOURCE	0	to	$1 [m]
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	0	to	4096-ptr_max[c][u]
USER_DATA	2	offset	1-4095[c]
USER_DATA	3	len	2-4096[c]
UNITS	3	len	unit_byte
LOCK2		&of->mutex
LOCK2		global &fw_lock
HALF_LOCKED2		&of->prealloc_mutex
HALF_LOCKED2		&pool->lock
TYPE_LOCK		(struct kernfs_open_file)->mutex

drivers/android/binder_alloc.c binder_alloc_do_buffer_copy() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	1-40
BUF_SIZE	0	to	(-1),4,8
CAPPED_DATA	3	len	1
CAPPED_DATA	3	len	1
DATA_SOURCE	0	to	$4 [m]
DATA_SOURCE	1	page	r binder_alloc_get_page
PARAM_COMPARE	2	offset	>= $3
TASK_NOT_RUNNING
NOCHECK_CALL
USER_DATA	3	len	1-39[c]
UNITS	0	to	unit_byte
UNITS	3	len	unit_byte

block/blk-map.c memcpy_from_bvec() -> memcpy_from_page()

Type	Parameter	Key	Value
BUF_SIZE	0	to	(-1)-s32max
BUF_SIZE	0	to	(-1)-s32max
DATA_SOURCE	0	to	$0
STR_LEN	0	to	(-1),8,11-12,14,17,19-20,23,26-27,29,31-32
STR_LEN	0	to	(-1),8,11-12,14,17,19-20,23,26-27,29,31-32
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	1	page	unit_page
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte

fs/hfs/bnode.c hfs_bnode_read() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	4096-ptr_max
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	1-4096
CAPPED_DATA	3	len	1
DATA_SOURCE	2	offset	$2 [m]
FUZZY_MAX	2	offset	0
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	0	to	unit_byte
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte
HALF_LOCKED2		&((inode->i_sb)->s_fs_info)->cat_tree->tree_lock
HALF_LOCKED2		&((main_inode->i_sb)->s_fs_info)->cat_tree->tree_lock
HALF_LOCKED2		&(sb->s_fs_info)->cat_tree->tree_lock

drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c chcr_short_record_handler() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	4096-ptr_max
PARAM_VALUE	2	offset	0-u32max
PARAM_VALUE	3	len	1-4294967293
BUF_SIZE	0	to	16
CAPPED_DATA	3	len	1
PREEMPT_ADD
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte
LOCK2		&tx_ctx->lock
HALF_LOCKED2		&adap->ptp_lock
HALF_LOCKED2		&dev->tx_global_lock
HALF_LOCKED2		bh
HALF_LOCKED2		flags
HALF_LOCKED2		rcu_read
TYPE_LOCK		(struct tls_offload_context_tx)->lock

drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c chcr_short_record_handler() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	4096-ptr_max
PARAM_VALUE	2	offset	0-u32max
PARAM_VALUE	3	len	0-s32max,18446744071562067968-18446744073709551612
BUF_SIZE	0	to	16
CAPPED_DATA	3	len	1
PREEMPT_ADD
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte
LOCK2		&tx_ctx->lock
HALF_LOCKED2		&adap->ptp_lock
HALF_LOCKED2		&dev->tx_global_lock
HALF_LOCKED2		bh
HALF_LOCKED2		flags
HALF_LOCKED2		rcu_read
TYPE_LOCK		(struct tls_offload_context_tx)->lock

drivers/net/ethernet/chelsio/inline_crypto/ch_ktls/chcr_ktls.c chcr_short_record_handler() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	2	offset	0-u32max
PARAM_VALUE	3	len	1-u32max
CAPPED_DATA	3	len	1
PREEMPT_ADD
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	0	to	unit_byte
UNITS	3	len	unit_byte
LOCK2		&tx_ctx->lock
HALF_LOCKED2		&adap->ptp_lock
HALF_LOCKED2		&dev->tx_global_lock
HALF_LOCKED2		bh
HALF_LOCKED2		flags
HALF_LOCKED2		rcu_read
TYPE_LOCK		(struct tls_offload_context_tx)->lock

drivers/block/null_blk/main.c copy_from_nullb() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	4096-ptr_max
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	0-4096
CAPPED_DATA	3	len	1
CAPPED_DATA	3	len	1
PREEMPT_ADD
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	0	to	unit_byte
UNITS	3	len	unit_byte
LOCK2		&nullb->lock
LOCK2		irq
TYPE_LOCK		(struct nullb)->lock

fs/gfs2/lops.c gfs2_before_commit() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	18379471554275704832,18446612682070032384
CAPPED_DATA	2	offset	1
DATA_SOURCE	0	to	r lowmem_page_address
DATA_SOURCE	1	page	r mempool_alloc_noprof
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	3	len	unit_byte
LOCK2		&sdp->sd_log_flush_lock
TYPE_LOCK		(struct gfs2_sbd)->sd_log_flush_lock

drivers/gpu/drm/i915/gt/uc/intel_uc_fw.c intel_uc_fw_copy_rsa() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	1-u64max
PARAM_VALUE	1	page	1-u64max
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	0-4096
BUF_SIZE	0	to	(-1)-s32max
CAPPED_DATA	3	len	1
DATA_SOURCE	0	to	$1
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE	3	len
UNITS	1	page	unit_page
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte
HALF_LOCKED2		__flags

drivers/net/ethernet/sun/cassini.c cas_xmit_tx_ringN() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	4096-ptr_max
PARAM_VALUE	2	offset	0-u32max
PARAM_VALUE	3	len	32
DATA_SOURCE	3	len	r cas_calc_tabort
PREEMPT_ADD			<- disables preempt
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte
LOCK2		flags
HALF_LOCKED2		&dev->tx_global_lock
HALF_LOCKED2		&txq->_xmit_lock
HALF_LOCKED2		bh
HALF_LOCKED2		flags
HALF_LOCKED2		rcu_read

fs/f2fs/verity.c pagecache_read() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	16,4096-u64max
PARAM_VALUE	1	page	0-ptr_max
PARAM_VALUE	2	offset	0-4095
PARAM_VALUE	3	len	1-4096
BUF_SIZE	0	to	(-1)-16384
BUF_SIZE	1	page	(-1),64
BUF_SIZE	1	page	(-1),64
CAPPED_DATA	3	len	1
CAPPED_DATA	3	len	1
DATA_SOURCE	0	to	$1 [m]
DATA_SOURCE	1	page	r read_mapping_page
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
NO_OVERFLOW_SIMPLE	3	len

drivers/block/zram/zram_drv.c memcpy_from_bvec() -> memcpy_from_page()

Type	Parameter	Key	Value
DATA_SOURCE	0	to	$0
NOCHECK_CALL
UNITS	1	page	unit_page
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte

drivers/gpu/drm/i915/gem/i915_gem_phys.c i915_gem_object_get_pages_phys() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	1-u64max
PARAM_VALUE	1	page	4096-ptr_max
PARAM_VALUE	2	offset	0
PARAM_VALUE	3	len	4096
DATA_SOURCE	1	page	r shmem_read_mapping_page
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	3	len	unit_byte
LOCK2		obj->base.resv

drivers/md/dm-vdo/data-vio.c memcpy_from_bvec() -> memcpy_from_page()

Type	Parameter	Key	Value
DATA_SOURCE	0	to	$0
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	1	page	unit_page
UNITS	2	offset	unit_byte
UNITS	3	len	unit_byte

mm/zsmalloc.c zs_obj_read_begin() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	1	page	4096-ptr_max
PARAM_VALUE	2	offset	0-4103
PARAM_VALUE	3	len	0-4096,18446744073709551609-u64max
BUF_SIZE	0	to	(-1),4096
DATA_SOURCE	0	to	$3
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
UNITS	2	offset	unit_byte
HALF_LOCKED2		&of->mutex
HALF_LOCKED2		_T->lock

mm/zsmalloc.c zs_obj_read_begin() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	0	to	4096-ptr_max
PARAM_VALUE	2	offset	0
PARAM_VALUE	3	len	0-8198,18446744073709547521-u64max
DATA_SOURCE	1	page	r get_next_zpdesc
RX_PATH
TASK_NOT_RUNNING
NOCHECK_CALL
HALF_LOCKED2		&of->mutex
HALF_LOCKED2		_T->lock

drivers/gpu/drm/gma500/gma_display.c gma_crtc_cursor_set() -> memcpy_from_page()

Type	Parameter	Key	Value
PARAM_VALUE	2	offset	0
PARAM_VALUE	3	len	4096
RX_PATH
NOCHECK_CALL
UNITS	3	len	unit_byte
LOCK2		&crtc->mutex
TYPE_LOCK		(struct drm_crtc)->mutex