Implicit function declaration error due to missing "vmalloc_sync_all()" is expected due to a recent change in the kernel ABI in Bionic:
https://git.launchpad.net/~ubuntu-kernel/ubuntu/+source/linux/+git/bionic/commit/?id=a37c73d3e2fb62bf486c0d2099deff8fad325f20
Implicit function declaration error due to missing "vmalloc_ sync_all( )" is expected due to a recent change in the kernel ABI in Bionic:
https:/ /git.launchpad. net/~ubuntu- kernel/ ubuntu/ +source/ linux/+ git/bionic/ commit/ ?id=a37c73d3e2f b62bf486c0d2099 deff8fad325f20