kmemdup

函数名称：kmemdup - duplicate region of memory*@src: memory region to duplicate*@len: memory region length*@gfp: GFP mask to use* Return: newly allocated copy of @src or %NULL in case of error

函数原型：void *kmemdup(const void *src, size_t len, gfp_t gfp)

返回类型：void

参数：

类型	参数	名称
const void *	src
size_t	len
gfp_t	gfp

**调用者**
名称	描述
dup_iter
e820__reallocate_tables	Called late during init, in free_initmem().* Initial e820_table and e820_table_kexec are largish __initdata arrays.* Copy them to a (usually much smaller) dynamically allocated area that is* sized precisely after the number of e820 entries.
memdup_patch
verify_and_add_patch	Return a non-negative value even if some of the checks failed so that* we can skip over the next patch. If we return a negative value, we* signal a grave error like a memory allocation has failed and the* driver cannot continue functioning normally
alloc_msi_entry	alloc_msi_entry - Allocate an initialize msi_entry@dev: Pointer to the device for which this is allocated@nvec: The number of vectors used in this entry@affinity: Optional pointer to an affinity mask array size of @nvec If @affinity is not NULL then
copy_module_elf	Persist Elf information about a module. Copy the Elf header,* section header table, section string table, and symtab section* index from info to mod->klp_info.
cgroup_init_cftypes
alloc_trial_cpuset	alloc_trial_cpuset - allocate a trial cpuset*@cs: the cpuset that the trial cpuset duplicates
sort_idmaps	sort_idmaps - Sorts an array of idmap entries.* Can only be called if number of mappings exceeds UID_GID_MAP_MAX_BASE_EXTENTS.
gcov_info_dup	gcov_info_dup - duplicate profiling data set@info: profiling data set to duplicate Return newly allocated duplicate on success, %NULL on error.
gcov_info_dup	gcov_info_dup - duplicate profiling data set@info: profiling data set to duplicate Return newly allocated duplicate on success, %NULL on error.
gcov_fn_info_dup
gcov_info_dup	gcov_info_dup - duplicate profiling data set@info: profiling data set to duplicate Return newly allocated duplicate on success, %NULL on error.
bpf_insn_prepare_dump
get_msid_cpin_pin
request_key_auth_new	Create an authorisation token for /sbin/request-key or whoever to gain* access to the caller's security data.
dh_data_from_key
selinux_xfrm_policy_clone	LSM hook implementation that copies security data structure from old to new* for policy cloning.
unpack_strdup
dev_exceptions_copy	alled under devcgroup_mutex
dev_exception_add	alled under devcgroup_mutex
add_rules
legacy_fs_context_dup	Duplicate a legacy config.
__fscrypt_encrypt_symlink
posix_acl_clone	Clone an ACL.
setup_userns_sysctls
get_active_key_cont
key_alloc	key_alloc - Allocate a key of the specified type.@type: The type of key to allocate.@desc: The key description to allow the key to be searched out.@uid: The owner of the new key.@gid: The group ID for the new key's group permissions.
vfs_dup_fs_context	vfs_dup_fc_config: Duplicate a filesystem context.*@src_fc: The context to copy.

函数逻辑报告