Unable to run apport-collect command since this is being reported for a
mainline kernel.
If this isn't the "correct" location to report this error, please let me
know.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1849348
Title:
linux 5.4-rc4 Unable to build simple kernel module
Status in linux package in Ubuntu:
Confirmed
Bug description:
Cannot build a kernel module, errors in Linux headers using the
current RC4 (also tried RC3, and daily) mainline kernel packages from
http://kernel.ubuntu.com/~kernel-ppa/mainline
Am able to build against a 5.4-rc4 kernel level directly from upstream kernel
git repo (on a different platform).
To recreate error:
Install linux headers, etc from current 5.4 RC. (used 5.4.0-050400rc4
dated 10/20 for this test)
--[/tmp/builderr/Makefile]--
EXTRA_CFLAGS +=
obj-m += conftest.o
-- [EOF] --
--[/tmp/builderr/conftest.c]--
#include <linux/module.h>
void conftest(void)
{
}
MODULE_LICENSE("GPL-2");
-- [EOF] --
Command:
make -C /lib/modules/5.4.0-050400rc4-generic/build M=/tmp/builderr/
V=2 &> make_err.log
make.log is attached.
Expected output (using above Makefile and conftest.c, performed a build on a
system with 4.15.0-66 linux packages installed):
-- [expected output] --
make -C /lib/modules/4.15.0-66-generic/build/ M=/tmp/builderr
make: Entering directory '/usr/src/linux-headers-4.15.0-66-generic'
CC [M] /tmp/builderr/conftest.o
Building modules, stage 2.
MODPOST 1 modules
CC /tmp/builderr/conftest.mod.o
LD [M] /tmp/builderr/conftest.ko
make: Leaving directory '/usr/src/linux-headers-4.15.0-66-generic'
----
=========
lsb_release -rd
Description: Ubuntu 18.04.3 LTS
Release: 18.04
uname -a
Linux ubuntu_base 5.4.0-050400rc4-generic #201910202130 SMP Sun Oct 20
21:32:54 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux
dpkg -l | grep "linux\-[a-z]*\-"
ii linux-headers-5.4.0-050400rc4 5.4.0-050400rc4.201910202130
all Header files related to Linux kernel version 5.4.0
ii linux-headers-5.4.0-050400rc4-generic 5.4.0-050400rc4.201910202130
amd64 Linux kernel headers for version 5.4.0 on 64 bit x86 SMP
ii linux-image-unsigned-5.4.0-050400rc4-generic 5.4.0-050400rc4.201910202130
amd64 Linux kernel image for version 5.4.0 on 64 bit x86 SMP
ri linux-libc-dev:amd64 4.15.0-65.74
amd64 Linux Kernel Headers for development
ii linux-modules-5.4.0-050400rc4-generic 5.4.0-050400rc4.201910202130
amd64 Linux kernel extra modules for version 5.4.0 on 64 bit x86
SMP
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