The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.

To reproduce the conflict and resubmit, you may use the following commands:

git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x a5a319ec2c2236bb96d147c16196d2f1f3799301 # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2023071621-diary-henchman-76a2@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^..

Possible dependencies:

a5a319ec2c22 ("um: Use HOST_DIR for mrproper") 0663c68c4d2d ("kbuild: remove {CLEAN,MRPROPER,DISTCLEAN}_DIRS") 610134b750bb ("kbuild: remove misleading stale FIXME comment") 63ec90f18204 ("um: ensure `make ARCH=um mrproper` removes arch/$(SUBARCH)/include/generated/") 8b41fc4454e3 ("kbuild: create modules.builtin without Makefile.modbuiltin or tristate.conf") b1fbfcb4a209 ("kbuild: make single target builds even faster") bbc55bded4aa ("modpost: dump missing namespaces into a single modules.nsdeps file") 0241ea8cae19 ("modpost: free ns_deps_buf.p after writing ns_deps files") bff9c62b5d20 ("modpost: do not invoke extra modpost for nsdeps") 35e046a203ee ("kbuild: remove unneeded variable, single-all") 39808e451fdf ("kbuild: do not read $(KBUILD_EXTMOD)/Module.symvers") 1747269ab016 ("modpost: do not parse vmlinux for external module builds") fab546e6cd7a ("kbuild: update comments in scripts/Makefile.modpost")

thanks,

greg k-h

------------------ original commit in Linus's tree ------------------

From a5a319ec2c2236bb96d147c16196d2f1f3799301 Mon Sep 17 00:00:00 2001 From: Kees Cook keescook@chromium.org Date: Tue, 6 Jun 2023 15:24:45 -0700 Subject: [PATCH] um: Use HOST_DIR for mrproper

When HEADER_ARCH was introduced, the MRPROPER_FILES (then MRPROPER_DIRS) list wasn't adjusted, leaving SUBARCH as part of the path argument. This resulted in the "mrproper" target not cleaning up arch/x86/... when SUBARCH was specified. Since HOST_DIR is arch/$(HEADER_ARCH), use it instead to get the correct path.

Cc: Richard Weinberger richard@nod.at Cc: Anton Ivanov anton.ivanov@cambridgegreys.com Cc: Johannes Berg johannes@sipsolutions.net Cc: Azeem Shaikh azeemshaikh38@gmail.com Cc: linux-um@lists.infradead.org Fixes: 7bbe7204e937 ("um: merge Makefile-{i386,x86_64}") Cc: stable@vger.kernel.org Signed-off-by: Kees Cook keescook@chromium.org Link: https://lore.kernel.org/r/20230606222442.never.807-kees@kernel.org

diff --git a/arch/um/Makefile b/arch/um/Makefile index 8186d4761bda..da4d5256af2f 100644 --- a/arch/um/Makefile +++ b/arch/um/Makefile @@ -149,7 +149,7 @@ export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE) $(CC_FLAGS_ # When cleaning we don't include .config, so we don't include # TT or skas makefiles and don't clean skas_ptregs.h. CLEAN_FILES += linux x.i gmon.out -MRPROPER_FILES += arch/$(SUBARCH)/include/generated +MRPROPER_FILES += $(HOST_DIR)/include/generated

archclean: @find . ( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \