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kbuild: Fix signing issue for external modules

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When running the sign script the kernel is within the source directory
of external modules. This caused issues when the kernel uses relative
paths, like:

make[5]: Entering directory '/build/client/devel/kernel/work/linux-2.6'
make[6]: Entering directory '/build/client/devel/addmodules/vtx/work/vtx'
   INSTALL /build/client/devel/addmodules/vtx/_/lib/modules/6.13.0-devel+/extra/vtx.ko
   SIGN    /build/client/devel/addmodules/vtx/_/lib/modules/6.13.0-devel+/extra/vtx.ko
/bin/sh: 1: scripts/sign-file: not found
   DEPMOD  /build/client/devel/addmodules/vtx/_/lib/modules/6.13.0-devel+

Working around it by using absolute pathes here.

Fixes: 13b25489b6f8 ("kbuild: change working directory to external module directory with M=")
Signed-off-by: Torsten Hilbrich <torsten.hilbrich@secunet.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Torsten Hilbrich 2025-01-13 07:01:29 +01:00 committed by Masahiro Yamada
parent 3b7f793acc
commit 25ff08aa43
1 changed files with 1 additions and 1 deletions
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2
scripts/Makefile.modinst
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@ -105,7 +105,7 @@ else
sig-key := $(CONFIG_MODULE_SIG_KEY)
endif
quiet_cmd_sign = SIGN $@
cmd_sign = scripts/sign-file $(CONFIG_MODULE_SIG_HASH) "$(sig-key)" certs/signing_key.x509 $@ \
cmd_sign = $(objtree)/scripts/sign-file $(CONFIG_MODULE_SIG_HASH) "$(sig-key)" $(objtree)/certs/signing_key.x509 $@ \
$(if $(KBUILD_EXTMOD),|| true)
ifeq ($(sign-only),)