4.9-rc1 won't boot unknown symbol __fentry__

From: Vince Weaver
Date: Mon Oct 17 2016 - 13:07:31 EST


Hello

My haswell machine won't boot with 4.9-rc1, apparently due to missing
symbols in the modules. Possibly being related to ftrace being on?

It booted just fine with linus-git from 13 October so this is a recent
break.

Just wanted to see if this was a known issue before I try to bisect
things.

[ 4.448405] thermal: no symbol version for __fentry__
[ 4.453999] thermal: Unknown symbol __fentry__ (err -22)
[ 4.454065] usb_common: no symbol version for __fentry__
[ 4.454068] usb_common: Unknown symbol __fentry__ (err -22)
[ 4.499172] pps_core: no symbol version for _copy_from_user
[ 4.505262] pps_core: Unknown symbol _copy_from_user (err -22)
[ 4.505293] usb_common: no symbol version for __fentry__
[ 4.505297] usb_common: Unknown symbol __fentry__ (err -22)
...