# Set to 1 if building an empty subscription-only package.

%define empty_package		0

#######################################################

# Only need to update these variables and the changelog

%define kernel_ver	4.18.0-305.3.1.el8_4

%define kpatch_ver	0.9.3

%define rpm_ver		1

%define rpm_rel		1

%if !%{empty_package}

# Patch sources below. DO NOT REMOVE THIS LINE.

#

# https://bugzilla.redhat.com/1962521

Source100: CVE-2021-33034.patch

# End of patch sources. DO NOT REMOVE THIS LINE.

%endif

%define sanitized_rpm_rel	%{lua: print((string.gsub(rpm.expand("%rpm_rel"), "%.", "_")))}

%define sanitized_kernel_ver   %{lua: print((string.gsub(string.gsub(rpm.expand("%kernel_ver"), '.el8_?\%d?', ""), "%.", "_")))}

%define kernel_ver_arch        %{kernel_ver}.%{_arch}

Name:		kpatch-patch-%{sanitized_kernel_ver}

Version:	%{rpm_ver}

Release:	%{rpm_rel}%{?dist}

%if %{empty_package}

Summary:	Initial empty kpatch-patch for kernel-%{kernel_ver_arch}

%else

Summary:	Live kernel patching module for kernel-%{kernel_ver_arch}

%endif

Group:		System Environment/Kernel

License:	GPLv2

ExclusiveArch:	x86_64 ppc64le

Conflicts:	%{name} < %{version}-%{release}

Provides:	kpatch-patch = %{kernel_ver_arch}

Provides:	kpatch-patch = %{kernel_ver}

%if !%{empty_package}

Requires:	systemd

%endif

Requires:	kpatch >= 0.6.1-1

Requires:	kernel-uname-r = %{kernel_ver_arch}

%if !%{empty_package}

BuildRequires:	patchutils

BuildRequires:	kernel-devel = %{kernel_ver}

BuildRequires:	kernel-debuginfo = %{kernel_ver}

# kernel build requirements, generated from:

#   % rpmspec -q --buildrequires kernel.spec | sort | awk '{print "BuildRequires:\t" $0}'

# with arch-specific packages moved into conditional block

BuildRequires:	asciidoc audit-libs-devel bash bc binutils binutils-devel bison bzip2 diffutils elfutils elfutils-devel findutils flex gawk gcc gettext git gzip hmaccalc hostname kmod m4 make ncurses-devel net-tools newt-devel numactl-devel openssl openssl-devel patch pciutils-devel perl-Carp perl-devel perl(ExtUtils::Embed) perl-generators perl-interpreter python3-devel python3-docutils redhat-rpm-config rpm-build sh-utils tar xmlto xz xz-devel zlib-devel java-devel kabi-dw

%ifarch x86_64

BuildRequires:	pesign >= 0.10-4

%endif

%ifarch ppc64le

BuildRequires:	gcc-plugin-devel

%endif

Source0:	https://github.com/dynup/kpatch/archive/v%{kpatch_ver}.tar.gz

Source10:	kernel-%{kernel_ver}.src.rpm

# kpatch-build patches

%global _dupsign_opts --keyname=rhelkpatch1

%define builddir	%{_builddir}/kpatch-%{kpatch_ver}

%define kpatch		%{_sbindir}/kpatch

%define kmoddir 	%{_usr}/lib/kpatch/%{kernel_ver_arch}

%define kinstdir	%{_sharedstatedir}/kpatch/%{kernel_ver_arch}

%define patchmodname	kpatch-%{sanitized_kernel_ver}-%{version}-%{sanitized_rpm_rel}

%define patchmod	%{patchmodname}.ko

%define _missing_build_ids_terminate_build 1

%define _find_debuginfo_opts -r

%undefine _include_minidebuginfo

%undefine _find_debuginfo_dwz_opts

%description

This is a kernel live patch module which can be loaded by the kpatch

command line utility to modify the code of a running kernel.  This patch

module is targeted for kernel-%{kernel_ver}.

%prep

%autosetup -n kpatch-%{kpatch_ver} -p1

%build

kdevdir=/usr/src/kernels/%{kernel_ver_arch}

vmlinux=/usr/lib/debug/lib/modules/%{kernel_ver_arch}/vmlinux

# kpatch-build

make -C kpatch-build

# patch module

for i in %{sources}; do

	[[ $i == *.patch ]] && patch_sources="$patch_sources $i"

done

export CACHEDIR="%{builddir}/.kpatch"

kpatch-build/kpatch-build -n %{patchmodname} -r %{SOURCE10} -v $vmlinux --skip-cleanup $patch_sources || { cat "${CACHEDIR}/build.log"; exit 1; }

%install

installdir=%{buildroot}/%{kmoddir}

install -d $installdir

install -m 755 %{builddir}/%{patchmod} $installdir

%files

%{_usr}/lib/kpatch

%post

%{kpatch} install -k %{kernel_ver_arch} %{kmoddir}/%{patchmod}

chcon -t modules_object_t %{kinstdir}/%{patchmod}

sync

if [[ %{kernel_ver_arch} = $(uname -r) ]]; then

	cver="%{rpm_ver}_%{rpm_rel}"

	pname=$(echo "kpatch_%{sanitized_kernel_ver}" | sed 's/-/_/')

	lver=$({ %{kpatch} list | sed -nr "s/^${pname}_([0-9_]+)\ \[enabled\]$/\1/p"; echo "${cver}"; } | sort -V | tail -1)

	if [ "${lver}" != "${cver}" ]; then

		echo "WARNING: at least one loaded kpatch-patch (${pname}_${lver}) has a newer version than the one being installed."

		echo "WARNING: You will have to reboot to load a downgraded kpatch-patch"

	else

		%{kpatch} load %{patchmod}

	fi

fi

exit 0

%postun

%{kpatch} uninstall -k %{kernel_ver_arch} %{patchmod}

sync

exit 0

%else

%description

This is an empty kpatch-patch package which does not contain any real patches.

It is only a method to subscribe to the kpatch stream for kernel-%{kernel_ver}.

%files

%doc

%endif

%changelog

* Thu Jun 17 2021 Yannick Cote <ycote@redhat.com> [1-1.el8_4]

- kernel: use-after-free in net/bluetooth/hci_event.c when destroying an hci_chan [1962521] {CVE-2021-33034}

* Wed May 19 2021 Artem Savkov <asavkov@redhat.com> [0-0.el8_4]

- An empty patch to subscribe to kpatch stream for kernel-4.18.0-305.3.1.el8_4 [1962203]