On Sat, Aug 19, 2023 at 3:37 PM Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx> wrote: > > Hi, > > We recently were hit (unnecessarily hard) when after kernel uprev we > figured that something wasn't working. The root cause was a rename of > the CONFIG_FOO option between kernel releases, which make oldconfig > doesn't warn/notify about. > > Would it be possible to add either a new --listunknown mode to conf or > to somehow make it conf_warning("unknown symbol: %s\n", line) when it > reads a line from oldconf that it cannot sym_find()? This makes sense and I brought up this scenario a couple of days ago on a recent patch. I can make a patch for this if needed. Thanks, Jesse Taube > > That would save a ton of time.