Hi, I am a newbie on linux-backport and I have a problem generating a backport output with linux-kernel 4.9.y checkout. These are what I ran to generate backport output against linux-4.9 kernel. 1) "git clone git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git; git checkout linux-4.9.y" # linux-stable git repo clone for source 2) "git clone git://git.kernel.org/pub/scm/linux/kernel/git/backports/backports.git"; git checkout linux-4.19.y" # linux-backports 3) In backports directory, ran "./gentree --copy-list copy-list --clean /abs-path/linux-stable /abs-path/output" I hit many gentree errors like > File doesn't exists > Patch error (refcount.c lock, rhashtable related things...) > Another patch errors I resolved by removing the patch files and directly modified the source in linux-4.9 stable repo as well as modified Kconfig file under backports/compat. Also, remove files that don't exist. I am really wondering whether these procedures are the right way to generate the backport output. I need to generate mac80211.ko / cfg80211.ko / and wifi-driver.ko against our linux-4.9 kernel source code to support a lower version of kernel. If I checked out linux-5.4.y kernel from linux-stable repo and checked out linux-5.4.y from backport repo, I don't see these types of errors. Please advise me. Thank you. -- To unsubscribe from this list: send the line "unsubscribe backports" in