On 09/05/18 23:45, Bernhard Landauer wrote:

When compiling 4.16.7-rt1 with gcc 8.1.0 I see tons of these warnings:

warning: objtool: mISDN_FsmEvent()+0x27: sibling call from callable
instruction with modified stack frame

Any ideas what to make of these?

regards
Bernhard

Ah ok, meanwhile I found this:
https://lkml.org/lkml/2018/5/8/51

So I guess it's not really anything to worry about ;)