Currently, driver passes void pointer to wmsg as source buffer
in memcpy API to copy the local log_msg to nlmsg data buffer
in ptt_sock_send_msg_to_app(). This leads to kernel warn as
kernel is unable to calculate the size of variable length source
buffer.
To fix this issue, pass the data buffer of nlmsg in memcpy API
so that kernel is able to calculate the size of source buffer
and verify for buffer overflow before copy.
Change-Id: I91e2e1b0b8e58428ed5ba20c7caf4ec3b45a6428
CRs-Fixed: 3749523
8cc36ff7cf