Debian Patches

Status for linux/5.10.223-1

Patch Description Author Forwarded Bugs Origin Last update
bugfix/all/radeon-amdgpu-firmware-is-required-for-drm-and-kms-on-r600-onward.patch radeon, amdgpu: Firmware is required for DRM and KMS on R600 onward
radeon requires firmware/microcode for the GPU in all chips, but for
newer chips (apparently R600 'Evergreen' onward) it also expects
firmware for the memory controller and other sub-blocks.

radeon attempts to gracefully fall back and disable some features if
the firmware is not available, but becomes unstable - the framebuffer
and/or system memory may be corrupted, or the display may stay black.

Therefore, perform a basic check for the existence of
/lib/firmware/{radeon,amdgpu} when a device is probed, and abort if it
is missing, except for the pre-R600 case.
Ben Hutchings <ben@decadent.org.uk> no debian 2013-01-08
debian/firmware_class-refer-to-debian-wiki-firmware-page.patch firmware_class: Refer to Debian wiki page when logging missing firmware
If firmware loading fails due to a missing file, log a second error
message referring to our wiki page about firmware. This will explain
why some firmware is in non-free, or can't be packaged at all. Only
do this once per boot.

Do something similar in the radeon and amdgpu drivers, where we have
an early check to avoid failing at a point where we cannot display
anything.
Ben Hutchings <ben@decadent.org.uk> not-needed debian 2018-03-12
debian/gitignore.patch Tweak gitignore for Debian pkg-kernel using git svn.
[bwh: Tweak further for pure git]
Ian Campbell <ijc@hellion.org.uk> not-needed 2013-01-17
debian/dfsg/arch-powerpc-platforms-8xx-ucode-disable.patch Remove microcode patches for mgsuvd (not enabled in Debian configs)
diff --git a/arch/powerpc/platforms/8xx/Kconfig b/arch/powerpc/platforms/8xx/Kconfig
index 48a920a..81570b6 100644
Ben Hutchings <ben@decadent.org.uk> not-needed 2009-04-13
debian/dfsg/drivers-media-dvb-dvb-usb-af9005-disable.patch dvb-usb-af9005: mark as broken Ben Hutchings <ben@decadent.org.uk> not-needed 2009-08-17
debian/dfsg/vs6624-disable.patch vs6624: mark as broken Ben Hutchings <ben@decadent.org.uk> not-needed 2012-05-27
debian/dfsg/drivers-net-appletalk-cops.patch Add removal patches for: 3c359, smctr, keyspan, cops Frederik Schüler <fs@debian.org> not-needed 2007-01-05
debian/dfsg/video-remove-nvidiafb-and-rivafb.patch video: Remove nvidiafb and rivafb
These drivers contain register programming code provided by the
hardware vendor that appears to have been deliberately obfuscated.
This is arguably not the preferred form for modification.

These drivers are also largely redundant with nouveau. The RIVA 128
(NV3) is not supported by nouveau but is about 15 years old and
probably discontinued 10 years ago.
Ben Hutchings <ben@decadent.org.uk> no debian 2012-06-02
debian/dfsg/documentation-fix-broken-link-to-cipso-draft.patch Documentation: Fix broken link to CIPSO draft
We exclude the CIPSO draft text as its licence is not DFSG compliant.
Link to the IETF's online version instead.
Ben Hutchings <ben@decadent.org.uk> not-needed 2019-08-24
debian/version.patch Include package version along with kernel release in stack traces
For distribution binary packages we assume
$DISTRIBUTION_OFFICIAL_BUILD, $DISTRIBUTOR and $DISTRIBUTION_VERSION
are set.
Ben Hutchings <ben@decadent.org.uk> not-needed 2012-07-24
debian/uname-version-timestamp.patch Make mkcompile_h accept an alternate timestamp string
We want to include the Debian version in the utsname::version string
instead of a full timestamp string. However, we still need to provide
a standard timestamp string for gen_initramfs_list.sh to make the
kernel image reproducible.

Make mkcompile_h use $KBUILD_BUILD_VERSION_TIMESTAMP in preference to
$KBUILD_BUILD_TIMESTAMP.
Ben Hutchings <ben@decadent.org.uk> not-needed 2015-05-12
debian/kernelvariables.patch kbuild: Make the toolchain variables easily overwritable
Allow make variables to be overridden for each flavour by a file in
the build tree, .kernelvariables.

We currently use this for ARCH, KERNELRELEASE, CC, and in some cases
also CROSS_COMPILE, KCFLAGS.

This file can only be read after we establish the build tree, and all
use of $(ARCH) needs to be moved after this.

[bwh: Updated for 5.3: include .kernelvariables from current directory
rather than using undefined $(obj).]
Bastian Blank <waldi@debian.org> not-needed 2009-02-22
debian/ia64-hardcode-arch-script-output.patch Hardcode arch script output
Here's a patch that simply uses hardcoded definitions instead of
doing the dynamic tests that require architecture-specific scripts.

I don't particularly like this approach because it restricts
portability and diverts from upstream. But, it is simpler, and this
really needs to be fixed somehow before etch (along with a rebuild of
linux-modules-extra-2.6), so I'm willing to live with it if my other
patch is deemed unacceptable.

My primary concern is that, in the future, the output of these scripts
will change and we (or our successors) will either not notice or
forget to update the hardcoded values.

Including the scripts in linux-kbuild will avoid this manual step
altogether, and allow for the possibility of other archs to provide
their own scripts in the future.
dann frazier <dannf@debian.org> not-needed debian 2007-03-26
debian/mips-disable-werror.patch [PATCH] Partially revert "MIPS: Add -Werror to arch/mips/Kbuild"
This reverts commits 66f9ba101f54bda63ab1db97f9e9e94763d0651b and
5373633cc9253ba82547473e899cab141c54133e.

We really don't want to add -Werror anywhere.
Ben Hutchings <ben@decadent.org.uk> not-needed 2010-09-13
debian/mips-boston-disable-its.patch Disable uImage generation for mips generic
MIPS generic trys to generate uImage when build, which then ask for
u-boot-tools.
YunQiang Su <syq@debian.org> not-needed 2018-05-14
debian/mips-ieee754-relaxed.patch Use RELAXED ieee754 mode for Loongson-3 as 3A 4000 is 2008-only
There are 2 mode of value of IEEE NaN hardcoded by CPU.
Currently, our mipsel/mips64el port is in so-called lagacy mode.
Loongson 3A 4000 is set as the so-called 2008 mode.

To make Debian workable on Loongson 3A 4000, we need set the kerenl in
RELAXED mode.

https://web.archive.org/web/20180830093617/https://dmz-portal.mips.com/wiki/MIPS_ABI_-_NaN_Interlinking

diff --git a/arch/mips/kernel/fpu-probe.c b/arch/mips/kernel/fpu-probe.c
index e689d6a83..667226f94 100644
YunQiang Su <syq@debian.org> not-needed 2020-11-16
debian/arch-sh4-fix-uimage-build.patch [sh4] Fix uImage build
[bwh: This was added without a description, but I think it is done
only to avoid a build-dependency on u-boot-tools.]
Nobuhiro Iwamatsu <iwamatsu@nigauri.org> not-needed debian
debian/tools-perf-version.patch Create manpages and binaries including the version
[bwh: Fix version insertion in perf man page cross-references and perf
man page title. Install bash_completion script for perf with a
version-dependent name. And do the same for trace.]
Bastian Blank <waldi@debian.org> no 2011-09-26
debian/tools-perf-install.patch Install perf scripts non-executable
[bwh: Forward-ported to 4.13]
Bastian Blank <waldi@debian.org> no 2011-10-07
debian/wireless-add-debian-wireless-regdb-certificates.patch wireless: Add Debian wireless-regdb certificates
This hex dump is generated using:

{
for cert in debian/certs/wireless-regdb-*.pem; do
openssl x509 -in $cert -outform der;
done
} | hexdump -v -e '1/1 "0x%.2x," "\n"' > net/wireless/certs/debian.hex
Ben Hutchings <ben@decadent.org.uk> not-needed 2018-04-13
debian/export-symbols-needed-by-android-drivers.patch Export symbols needed by Android drivers
We want to enable use of the Android ashmem and binder drivers to
support Anbox, but they should not be built-in as that would waste
resources and increase security attack surface on systems that don't
need them.

Export the currently un-exported symbols they depend on.
Ben Hutchings <ben@decadent.org.uk> no debian 2020-09-07
debian/android-enable-building-ashmem-and-binder-as-modules.patch android: Enable building ashmem and binder as modules
We want to enable use of the Android ashmem and binder drivers to
support Anbox, but they should not be built-in as that would waste
resources and increase security attack surface on systems that don't
need them.

- Add a MODULE_LICENSE declaration to ashmem
- Change the Makefiles to build each driver as an object with the
"_linux" suffix (which is what Anbox expects)
- Change config symbol types to tristate
Ben Hutchings <ben@decadent.org.uk> no debian 2018-06-22
debian/documentation-drop-sphinx-version-check.patch [PATCH 1/2] Documentation: Drop sphinx version check Bastian Blank <waldi@debian.org> not-needed 2020-08-04
debian/perf-traceevent-support-asciidoctor-for-documentatio.patch [PATCH 2/2] perf/traceevent: Support asciidoctor for documentation Bastian Blank <waldi@debian.org> not-needed 2020-08-04
debian/kbuild-look-for-module.lds-under-arch-directory-too.patch kbuild: Look for module.lds under arch directory too
The module.lds linker script is now built under the scripts directory,
where previously it was under arch/$(SRCARCH).

However, we package the scripts directory as linux-kbuild, which is
meant to be able to do support native and cross-builds. That means it
shouldn't contain files for a specific target architecture without a
wrapper to select between them, and it doesn't appear that linker
scripts are powerful enough to implement such a wrapper.

Building module.lds in a different location would require relatively
large changes. Moving it in the package build rules can work, but we
need to support custom kernel builds from the same source so we can't
assume it's moved.

Therefore, we move module.lds under the arch build directory in
rules.real and change Makefile.modfinal to look for it in both places.
Ben Hutchings <benh@debian.org> not-needed debian 2020-12-10
debian/kbuild-abort-build-if-subdirs-used.patch kbuild: Abort build if SUBDIRS used
DKMS and module-assistant both build OOT modules as root. If they
build an old OOT module that still use SUBDIRS this causes Kbuild
to try building a full kernel, which obviously fails but not before
deleting files from the installed headers package.

To avoid such mishaps, detect this situation and abort the build.

The error message is based on that used in commit 0126be38d988
"kbuild: announce removal of SUBDIRS if used".
Ben Hutchings <benh@debian.org> not-needed debian 2021-04-26
features/all/drivers-media-dvb-usb-af9005-request_firmware.patch af9005: Use request_firmware() to load register init script
Read the register init script from the Windows driver. This is sick
but should avoid the potential copyright infringement in distributing
a version of the script which is directly derived from the driver.
Ben Hutchings <ben@decadent.org.uk> no 2009-08-24
debian/iwlwifi-do-not-request-unreleased-firmware.patch iwlwifi: Do not request unreleased firmware for IWL6000
The iwlwifi driver currently supports firmware API versions 4-6 for
these devices. It will request the file for the latest supported
version and then fall back to earlier versions. However, the latest
version that has actually been released is 4, so we expect the
requests for versions 6 and then 5 to fail.

The installer appears to report any failed request, and it is probably
not easy to detect that this particular failure is harmless. So stop
requesting the unreleased firmware.
Ben Hutchings <ben@decadent.org.uk> not-needed debian
bugfix/all/firmware_class-log-every-success-and-failure.patch firmware_class: Log every success and failure against given device
The hundreds of users of request_firmware() have nearly as many
different log formats for reporting failures. They also have only the
vaguest hint as to what went wrong; only firmware_class really knows
that. Therefore, add specific log messages for the failure modes that
aren't currently logged.

In case of a driver that tries multiple names, this may result in the
impression that it failed to initialise. Therefore, also log successes.

This makes many error messages in drivers redundant, which will be
removed in later patches.

This does not cover the case where we fall back to a user-mode helper
(which is no longer enabled in Debian).

format to detect missing firmware.
Ben Hutchings <ben@decadent.org.uk> no 2012-12-09
bugfix/all/firmware-remove-redundant-log-messages-from-drivers.patch firmware: Remove redundant log messages from drivers
Now that firmware_class logs every success and failure consistently,
many other log messages can be removed from drivers.

This will probably need to be split up into multiple patches prior to
upstream submission.
Ben Hutchings <ben@decadent.org.uk> no 2012-12-09
debian/af_802154-Disable-auto-loading-as-mitigation-against.patch [PATCH 2/3] af_802154: Disable auto-loading as mitigation against local exploits
Recent review has revealed several bugs in obscure protocol
implementations that can be exploited by local users for denial of
service or privilege escalation. We can mitigate the effect of any
remaining vulnerabilities in such protocols by preventing unprivileged
users from loading the modules, so that they are only exploitable on
systems where the administrator has chosen to load the protocol.

The 'af_802154' (IEEE 802.15.4) protocol is not widely used, was
not present in the 'lenny' kernel, and seems to receive only sporadic
maintenance. Therefore disable auto-loading.
Ben Hutchings <ben@decadent.org.uk> not-needed 2010-11-19
debian/rds-Disable-auto-loading-as-mitigation-against-local.patch [PATCH 1/3] rds: Disable auto-loading as mitigation against local exploits
Recent review has revealed several bugs in obscure protocol
implementations that can be exploited by local users for denial of
service or privilege escalation. We can mitigate the effect of any
remaining vulnerabilities in such protocols by preventing unprivileged
users from loading the modules, so that they are only exploitable on
systems where the administrator has chosen to load the protocol.

The 'rds' protocol is one such protocol that has been found to be
vulnerable, and which was not present in the 'lenny' kernel.
Therefore disable auto-loading.
Ben Hutchings <ben@decadent.org.uk> not-needed 2010-11-19
debian/dccp-disable-auto-loading-as-mitigation-against-local-exploits.patch dccp: Disable auto-loading as mitigation against local exploits
We can mitigate the effect of vulnerabilities in obscure protocols by
preventing unprivileged users from loading the modules, so that they
are only exploitable on systems where the administrator has chosen to
load the protocol.

The 'dccp' protocol is not actively maintained or widely used.
Therefore disable auto-loading.
Ben Hutchings <ben@decadent.org.uk> not-needed 2017-02-16
debian/hamradio-disable-auto-loading-as-mitigation-against-local-exploits.patch hamradio: Disable auto-loading as mitigation against local exploits
We can mitigate the effect of vulnerabilities in obscure protocols by
preventing unprivileged users from loading the modules, so that they
are only exploitable on systems where the administrator has chosen to
load the protocol.

The 'ham' radio protocols (ax25, netrom, rose) are not actively
maintained or widely used. Therefore disable auto-loading.
Ben Hutchings <ben@decadent.org.uk> not-needed 2019-08-05
debian/fs-enable-link-security-restrictions-by-default.patch fs: Enable link security restrictions by default
This reverts commit 561ec64ae67ef25cac8d72bb9c4bfc955edfd415
('VFS: don't do protected {sym,hard}links by default').
Ben Hutchings <ben@decadent.org.uk> not-needed debian 2012-11-02
debian/sched-autogroup-disabled.patch sched: Do not enable autogrouping by default
We want to provide the option of autogrouping but without enabling
it by default yet.
Ben Hutchings <ben@decadent.org.uk> not-needed 2011-03-16
debian/yama-disable-by-default.patch yama: Disable by default Ben Hutchings <ben@decadent.org.uk> not-needed debian 2013-06-19
debian/add-sysctl-to-disallow-unprivileged-CLONE_NEWUSER-by-default.patch add sysctl to disallow unprivileged CLONE_NEWUSER by default
add sysctl to disallow unprivileged CLONE_NEWUSER by default

This is a short-term patch. Unprivileged use of CLONE_NEWUSER
is certainly an intended feature of user namespaces. However
for at least saucy we want to make sure that, if any security
issues are found, we have a fail-safe.

[bwh: Remove unneeded binary sysctl bits]
[bwh: Keep this sysctl, but change the default to enabled]
Serge Hallyn <serge.hallyn@canonical.com> no http://kernel.ubuntu.com/git?p=serge%2Fubuntu-saucy.git;a=commit;h=5c847404dcb2e3195ad0057877e1422ae90892b8 2013-05-31
features/all/security-perf-allow-further-restriction-of-perf_event_open.patch security,perf: Allow further restriction of perf_event_open
When kernel.perf_event_open is set to 3 (or greater), disallow all
access to performance events by users without CAP_SYS_ADMIN.
Add a Kconfig symbol CONFIG_SECURITY_PERF_EVENTS_RESTRICT that
makes this value the default.

This is based on a similar feature in grsecurity
(CONFIG_GRKERNSEC_PERF_HARDEN). This version doesn't include making
the variable read-only. It also allows enabling further restriction
at run-time regardless of whether the default is changed.
Ben Hutchings <ben@decadent.org.uk> yes 2016-01-11
features/x86/intel-iommu-add-option-to-exclude-integrated-gpu-only.patch intel-iommu: Add option to exclude integrated GPU only
There is still laptop firmware that touches the integrated GPU behind
the operating system's back, and doesn't say so in the RMRR table.
Enabling the IOMMU for all devices causes breakage, but turning it off
for all graphics devices seems like a major weakness.

Add an option, intel_iommu=igpu_off, to exclude only integrated GPUs
from remapping. This is a narrower exclusion than igfx_off: it only
affects Intel devices on the root bus. Devices attached through an
external port (Thunderbolt or ExpressCard) won't be on the root bus.
Ben Hutchings <ben@decadent.org.uk> no debian 2019-08-21
features/x86/intel-iommu-add-kconfig-option-to-exclude-igpu-by-default.patch intel-iommu: Add Kconfig option to exclude iGPU by default
There is still laptop firmware that touches the integrated GPU behind
the operating system's back, and doesn't say so in the RMRR table.
Enabling the IOMMU for all devices causes breakage.

Replace CONFIG_INTEL_IOMMU_DEFAULT_ON with a 3-way choice
corresponding to "on", "off", and "on,intgpu_off".
Ben Hutchings <ben@decadent.org.uk> no debian 2019-08-21
debian/cdc_ncm-cdc_mbim-use-ncm-by-default.patch cdc_ncm,cdc_mbim: Use NCM by default
Devices that support both NCM and MBIM modes should be kept in NCM
mode unless there is userland support for MBIM.

Set the default value of cdc_ncm.prefer_mbim to false and leave it to
userland (modem-manager) to override this with a modprobe.conf file
once it's ready to speak MBIM.
Ben Hutchings <ben@decadent.org.uk> not-needed 2013-03-31
debian/snd-pcsp-disable-autoload.patch snd-pcsp: Disable autoload
There are two drivers claiming the platform:pcspkr device:
- pcspkr creates an input(!) device that can only beep
- snd-pcsp creates an equivalent input device plus a PCM device that can
play barely recognisable renditions of sampled sound

snd-pcsp is blacklisted by the alsa-base package, but not everyone
installs that. On PCs where no sound is wanted at all, both drivers
will still be loaded and one or other will complain that it couldn't
claim the relevant I/O range.

In case anyone finds snd-pcsp useful, we continue to build it. But
remove the alias, to ensure it's not loaded where it's not wanted.
Ben Hutchings <ben@decadent.org.uk> not-needed debian 2014-02-05
bugfix/x86/viafb-autoload-on-olpc-xo1.5-only.patch viafb: Autoload on OLPC XO 1.5 only
It appears that viafb won't work automatically on all the boards for
which it has a PCI device ID match. Currently, it is blacklisted by
udev along with most other framebuffer drivers, so this doesn't matter
much.

However, this driver is required for console support on the XO 1.5.
We need to allow it to be autoloaded on this model only, and then
un-blacklist it in udev.
Ben Hutchings <ben@decadent.org.uk> no debian 2013-04-20
debian/fjes-disable-autoload.patch fjes: Disable auto-loading
fjes matches a generic ACPI device ID, and relies on its probe
function to distinguish whether that really corresponds to a supported
device. Very few system will need the driver and it wastes memory on
all the other systems where the same device ID appears, so disable
auto-loading.
Ben Hutchings <ben@decadent.org.uk> no debian 2017-03-18
debian/fanotify-taint-on-use-of-fanotify_access_permissions.patch fanotify: Taint on use of FANOTIFY_ACCESS_PERMISSIONS
Various free and proprietary AV products use this feature and users
apparently want it. But punting access checks to userland seems like
an easy way to deadlock the system, and there will be nothing we can
do about that. So warn and taint the kernel if this feature is
actually used.
Ben Hutchings <ben@decadent.org.uk> not-needed 2016-07-13
debian/btrfs-warn-about-raid5-6-being-experimental-at-mount.patch btrfs: warn about RAID5/6 being experimental at mount time
Too many people come complaining about losing their data -- and indeed,
there's no warning outside a wiki and the mailing list tribal knowledge.
Message severity chosen for consistency with XFS -- "alert" makes dmesg
produce nice red background which should get the point across.

[bwh: Also add_taint() so this is flagged in bug reports]
Adam Borowski <kilobyte@angband.pl> no debian https://bugs.debian.org/863290#5 2017-03-28
bugfix/arm/arm-dts-kirkwood-fix-sata-pinmux-ing-for-ts419.patch ARM: dts: kirkwood: Fix SATA pinmux-ing for TS419
The old board code for the TS419 assigns MPP pins 15 and 16 as SATA
activity signals (and none as SATA presence signals). Currently the
device tree assigns the SoC's default pinmux groups for SATA, which
conflict with the second Ethernet port.
Ben Hutchings <ben@decadent.org.uk> yes debian 2017-02-17
bugfix/arm64/dts-rockchip-correct-voltage-selector-firefly-RK3399.patch arm64: dts: rockchip: correct voltage selector on Firefly-RK3399
Without this patch the Firefly-RK3399 board boot process hangs after these
lines:

fan53555-regulator 0-0040: FAN53555 Option[8] Rev[1] Detected!
fan53555-reg: supplied by vcc_sys
vcc1v8_s3: supplied by vcc_1v8

Blacklisting driver fan53555 allows booting.

The device tree uses a value of fcs,suspend-voltage-selector different to
any other board.

Changing this setting to the usual value is sufficient to enable booting
and also matches the value used in the vendor kernel.
Heinrich Schuchardt <xypron.glpk@gmx.de> no debian https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git/patch/?id=710e8c4a54be82ee8a97324e7b4330bf191e08bf 2018-06-04
bugfix/x86/perf-tools-fix-unwind-build-on-i386.patch perf tools: Fix unwind build on i386
EINVAL may not be defined when building unwind-libunwind.c with
REMOTE_UNWIND_LIBUNWIND, resulting in a compiler error in
LIBUNWIND__ARCH_REG_ID(). Its only caller, access_reg(), only checks
for a negative return value and doesn't care what it is. So change
-EINVAL to -1.
Ben Hutchings <ben@decadent.org.uk> no 2017-07-22
bugfix/sh/sh-boot-do-not-use-hyphen-in-exported-variable-name.patch sh: Do not use hyphen in exported variable names
arch/sh/Makefile defines and exports ld-bfd to be used by
arch/sh/boot/Makefile and arch/sh/boot/compressed/Makefile. Similarly
arch/sh/boot/Makefile defines and exports suffix-y to be used by
arch/sh/boot/compressed/Makefile. However some shells, including
dash, will not pass through environment variables whose name includes
a hyphen. Usually GNU make does not use a shell to recurse, but if
e.g. $(srctree) contains '~' it will use a shell here.

Rename these variables to ld_bfd and suffix_y.
Ben Hutchings <ben@decadent.org.uk> yes 2017-08-19
bugfix/arm/arm-mm-export-__sync_icache_dcache-for-xen-privcmd.patch ARM: mm: Export __sync_icache_dcache() for xen-privcmd
The xen-privcmd driver, which can be modular, calls set_pte_at()
which in turn may call __sync_icache_dcache().

The call to __sync_icache_dcache() may be optimised out because it is
conditional on !pte_special(), and xen-privcmd calls pte_mkspecial().
However, in a non-LPAE configuration there is no "special" bit and the
call is really unconditional.
Ben Hutchings <ben@decadent.org.uk> yes 2018-07-11
bugfix/powerpc/powerpc-boot-fix-missing-crc32poly.h-when-building-with-kernel_xz.patch powerpc/boot: Fix missing crc32poly.h when building with KERNEL_XZ
After commit faa16bc404d7 ("lib: Use existing define with
polynomial") the lib/xz/xz_crc32.c includes a header from include/linux
directory thus any other user of this code should define proper include
path.

This fixes the build error on powerpc with CONFIG_KERNEL_XZ:

In file included from ../arch/powerpc/boot/../../../lib/decompress_unxz.c:233:0,
from ../arch/powerpc/boot/decompress.c:42:
../arch/powerpc/boot/../../../lib/xz/xz_crc32.c:18:29: fatal error: linux/crc32poly.h: No such file or directory
Krzysztof Kozlowski <krzk@kernel.org> no https://patchwork.ozlabs.org/patch/963258/ 2018-08-29
bugfix/arm64/arm64-acpi-Add-fixup-for-HPE-m400-quirks.patch arm64/acpi: Add fixup for HPE m400 quirks
Adds a new ACPI init routine acpi_fixup_m400_quirks that adds
a work-around for HPE ProLiant m400 APEI firmware problems.

The work-around disables APEI when CONFIG_ACPI_APEI is set and
m400 firmware is detected. Without this fixup m400 systems
experience errors like these on startup:

[Hardware Error]: Hardware error from APEI Generic Hardware Error Source: 2
[Hardware Error]: event severity: fatal
[Hardware Error]: Error 0, type: fatal
[Hardware Error]: section_type: memory error
[Hardware Error]: error_status: 0x0000000000001300
[Hardware Error]: error_type: 10, invalid address
Kernel panic - not syncing: Fatal hardware error!

[bwh: Adjust context to apply to Linux 4.19]
Geoff Levand <geoff@infradead.org> yes 2018-06-13
bugfix/x86/x86-32-disable-3dnow-in-generic-config.patch x86-32: Disable 3D-Now in generic config
We want the 686 flavour to run on Geode LX and similar AMD family 5
CPUs as well as family 6 and higher CPUs. This used to work with
CONFIG_M686=y. However commit 25d76ac88821 "x86/Kconfig: Explicitly
enumerate i686-class CPUs in Kconfig" in Linux 4.16 has made the
kernel require family 6 or higher.

It looks like a sensible choice would be to enable CONFIG_MGEODE_LX
and CONFIG_X86_GENERIC (for more generic optimisations), but this
currently enables CONFIG_X86_USE_3D_NOW which will cause the kernel to
crash on CPUs without the AMD-specific 3D-Now instructions.

Make CONFIG_X86_USE_3DNOW depend on CONFIG_X86_GENERIC being disabled.
Ben Hutchings <ben@decadent.org.uk> no 2018-09-25
bugfix/x86/platform-x86-toshiba_haps-Fix-missing-newline-in-pr_.patch platform/x86: toshiba_haps: Fix missing newline in pr_debug call in toshiba_haps_notify

The pr_debug() call in toshiba_haps_notify() is missing a newline at the
end of the string, add this.
Hans de Goede <hdegoede@redhat.com> no debian https://git.kernel.org/linus/7dc4a18d017ca26abd1cea197e486fb3e5cd7632 2021-05-19
features/arm64/arm64-dts-rockchip-Add-basic-support-for-Kobol-s-Hel.patch arm64: dts: rockchip: Add basic support for Kobol's Helios64
The hardware is described in detail on Kobol's wiki at
https://wiki.kobol.io/helios64/intro/.

Up to now the following peripherals are working:

- UART
- Micro-SD card
- eMMC
- ethernet port 1
- status LED
- temperature sensor on i2c bus 2
Uwe Kleine-König <uwe@kleine-koenig.org> no https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=09e006cfb43e8ec38afe28278b210dab72e6cac8 2020-10-14
features/arm64/arm64-dts-rockchip-Rely-on-SoC-external-pull-up-on-p.patch arm64: dts: rockchip: Rely on SoC external pull up on pmic-int-l on Helios64
According to the schematic there is an external pull up, so there is no
need to enable the internal one additionally. Using no pull up matches
the vendor device tree.
Uwe Kleine-König <uwe@kleine-koenig.org> no https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/patch/?id=1e58ba111421375c5948c3e8145bdd84b06ac095 2021-01-24
features/arm64/arm64-dts-rockchip-kobol-helios64-Add-mmc-aliases.patch arm64: dts: rockchip: kobol-helios64: Add mmc aliases
This patch is part of commit 5dcbe7e3862d ("arm64: dts: rockchip: move mmc
aliases to board dts on rk3399") upstream. It is applied here only for Kobol's
helios64 to simplify conflict resolution for some further patches. It currently
is a noop as the same aliases already exist in rk3399.dtsi.
Uwe Kleine-König <ukleinek@debian.org> no 2021-03-29
features/arm64/arm64-dts-rockchip-Add-support-for-two-PWM-fans-on-h.patch arm64: dts: rockchip: Add support for two PWM fans on helios64

On the helios64 board the two connectors P6 and P7 are supposed to
power two fans. Add the corresponding pwm-fan devices.
Uwe Kleine-König <uwe@kleine-koenig.org> no https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git/patch/?id=271b66414df0b172c936b3cfd1894b7939f84165 2021-05-10
features/arm64/arm64-dts-rockchip-Add-support-for-PCIe-on-helios64.patch arm64: dts: rockchip: Add support for PCIe on helios64
This is enough to make the SATA controller visible:

# lspci
00:00.0 PCI bridge: Fuzhou Rockchip Electronics Co., Ltd RK3399 PCI Express Root Port
01:00.0 SATA controller: JMicron Technology Corp. JMB58x AHCI SATA controller
Uwe Kleine-König <uwe@kleine-koenig.org> no https://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git/patch/?id=5a65adfa2ad1542f856fc7de3999d51f3a35d2e2 2021-05-10
features/arm64/arm64-dts-raspberry-Add-support-for-the-CM4.patch arm64: dts: Add support for Raspberry Pi Compute Module 4 IO Board
It was introduced in mainline during the v5.16 release cycle. Since
many broadcom includes were reworked since v5.10, adding support would
involve more than cherry-picking a DTS addition that uses a few
includes.

To avoid side effects on other models, introduce a DTS that leverages
some existing includes (bcm2711.dtsi and bcm283x-rpi-usb-host.dtsi)
and describes the rest without re-using parts of the Raspberry Pi 4 B
model.

To avoid phandle rotation (0x16, 0x17, and 0x18) across 3 nodes
(dma@7e007000, i2c@7e205000, and interrupt-controller@7ef00100), and the
related changes in other nodes referencing them, hardcode 0x16 as the
phandle for interrupt-controller@7ef00100. This leads to an empty dtdiff
between this new DTB and the one produced by a v5.16-rc8 build.
Cyril Brulebois <cyril@debamax.com> no 2022-01-03
features/arm64/arm64-compat-Implement-misalignment-fixups-for-multi.patch arm64: compat: Implement misalignment fixups for multiword loads
The 32-bit ARM kernel implements fixups on behalf of user space when
using LDM/STM or LDRD/STRD instructions on addresses that are not 32-bit
aligned. This is not something that is supported by the architecture,
but was done anyway to increase compatibility with user space software,
which mostly targeted x86 at the time and did not care about aligned
accesses.

This feature is one of the remaining impediments to being able to switch
to 64-bit kernels on 64-bit capable hardware running 32-bit user space,
so let's implement it for the arm64 compat layer as well.

Note that the intent is to implement the exact same handling of
misaligned multi-word loads and stores as the 32-bit kernel does,
including what appears to be missing support for user space programs
that rely on SETEND to switch to a different byte order and back. Also,
like the 32-bit ARM version, we rely on the faulting address reported by
the CPU to infer the memory address, instead of decoding the instruction
fully to obtain this information.

This implementation is taken from the 32-bit ARM tree, with all pieces
removed that deal with instructions other than LDRD/STRD and LDM/STM, or
that deal with alignment exceptions taken in kernel mode.

[catalin.marinas@arm.com: change the option to 'default n']
Ard Biesheuvel <ardb@kernel.org> no https://git.kernel.org/linus/3fc24ef32d3b9368f4c103dcd21d6a3f959b4870 2022-07-01
features/x86/x86-memtest-WARN-if-bad-RAM-found.patch x86: memtest: WARN if bad RAM found
Since this is not a particularly thorough test, if we find any bad
bits of RAM then there is a fair chance that there are other bad bits
we fail to detect.
Ben Hutchings <ben@decadent.org.uk> yes debian 2011-12-05
features/x86/x86-make-x32-syscall-support-conditional.patch x86: Make x32 syscall support conditional on a kernel parameter
Enabling x32 in the standard amd64 kernel would increase its attack
surface while provide no benefit to the vast majority of its users.
No-one seems interested in regularly checking for vulnerabilities
specific to x32 (at least no-one with a white hat).

Still, adding another flavour just to turn on x32 seems wasteful. And
the only differences on syscall entry are a few instructions that mask
out the x32 flag and compare the syscall number.

Use a static key to control whether x32 syscalls are really enabled, a
Kconfig parameter to set its default value and a kernel parameter
"syscall.x32" to change it at boot time.
Ben Hutchings <ben@decadent.org.uk> yes debian 2018-02-12
bugfix/all/disable-some-marvell-phys.patch phy/marvell: disable 4-port phys
The Marvell PHY was originally disabled because it can cause networking
failures on some systems. According to Lennert Buytenhek this is because some
of the variants added did not share the same register layout. Since the known
cases are all 4-ports disable those variants (indicated by a 4 in the
penultimate position of the model name) until they can be audited for
correctness.

[bwh: Also #if-out the init functions for these PHYs to avoid
compiler warnings]
Ian Campbell <ijc@hellion.org.uk> yes debian 2013-11-20
bugfix/all/fs-add-module_softdep-declarations-for-hard-coded-cr.patch fs: Add MODULE_SOFTDEP declarations for hard-coded crypto drivers
This helps initramfs builders and other tools to find the full
dependencies of a module.

[Lukas Wunner: Forward-ported to 4.11: drop parts applied upstream]
Ben Hutchings <ben@decadent.org.uk> yes debian 2016-04-13
debian/makefile-do-not-check-for-libelf-when-building-oot-module.patch Makefile: Do not check for libelf when building OOT module
When building out-of-tree modules, the necessary tools should have
already been built. We therefore do not need libelf-dev to be
installed.

This effectively reverts commit 9f0c18aec620 "objtool: Fix
CONFIG_STACK_VALIDATION=y warning for out-of-tree modules", and
similarly moves the check introduced by commit 33a57ce0a54d "bpf:
Compile resolve_btfids tool at kernel compilation start".
Ben Hutchings <ben@decadent.org.uk> no 2020-09-07
bugfix/all/partially-revert-net-socket-implement-64-bit-timestamps.patch Partially revert "net: socket: implement 64-bit timestamps"
The introduction of SIOCGSTAMP{,NS}_OLD and move of SICOGSTAMP{,NS} to
a different header has caused build failures for various user-space
programs including qemu and suricata. It also causes a test failure
for glibc.

For now, remove the _OLD suffix on the old ioctl numbers and require
programs using 64-bit timestamps to explicitly use SIOCGSTAMP{,NS}_NEW.
Ben Hutchings <ben@decadent.org.uk> no 2019-08-20
bugfix/all/wireguard-ignore-config_android.patch wireguard: Clear keys after suspend despite CONFIG_ANDROID=y
WireGuard assumes that CONFIG_ANDROID implies Android power
management, i.e. user-space suspending the system automatically at
short intervals, and so does not clear keys after a suspend/resume
cycle. Debian systems don't do that kind of power management but we
do set CONFIG_ANDROID on some architectures as a dependency of Binder.

In 5.20, CONFIG_PM_USERSPACE_AUTOSLEEP will be introduced to tell the
kernel that this kind of power management is in use, and
CONFIG_ANDROID will be removed. For now, remove this one test that
does the wrong thing for us.
Ben Hutchings <benh@debian.org> not-needed 2022-07-07
bugfix/all/netfilter-ipset-Add-list-flush-to-cancel_gc.patch netfilter: ipset: Add list flush to cancel_gc
Flushing list in cancel_gc drops references to other lists right away,
without waiting for RCU to destroy list. Fixes race when referenced
ipsets can't be destroyed while referring list is scheduled for destroy.
Alexander Maltsev <keltar.gw@gmail.com> no https://git.kernel.org/linus/c1193d9bbbd379defe9be3c6de566de684de8a6f 2024-04-17
features/all/lockdown/efi-add-an-efi_secure_boot-flag-to-indicate-secure-b.patch [28/30] efi: Add an EFI_SECURE_BOOT flag to indicate secure boot mode
UEFI machines can be booted in Secure Boot mode. Add an EFI_SECURE_BOOT
flag that can be passed to efi_enabled() to find out whether secure boot is
enabled.

Move the switch-statement in x86's setup_arch() that inteprets the
secure_boot boot parameter to generic code and set the bit there.

[rperier: Forward-ported to 5.5:
- Use pr_warn()
- Adjust context]
[bwh: Forward-ported to 5.6: adjust context]
[bwh: Forward-ported to 5.7:
- Use the next available bit in efi.flags
- Adjust context]
David Howells <dhowells@redhat.com> no https://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs.git/commit?id=a5d70c55c603233c192b375f72116a395909da28 2019-02-18
features/all/lockdown/efi-lock-down-the-kernel-if-booted-in-secure-boot-mo.patch efi: Lock down the kernel if booted in secure boot mode
Based on an earlier patch by David Howells, who wrote the following
description:

> UEFI Secure Boot provides a mechanism for ensuring that the firmware will
> only load signed bootloaders and kernels. Certain use cases may also
> require that all kernel modules also be signed. Add a configuration option
> that to lock down the kernel - which includes requiring validly signed
> modules - if the kernel is secure-booted.
Ben Hutchings <ben@decadent.org.uk> no 2019-09-10
features/all/lockdown/mtd-disable-slram-and-phram-when-locked-down.patch mtd: phram,slram: Disable when the kernel is locked down
These drivers allow mapping arbitrary memory ranges as MTD devices.
This should be disabled to preserve the kernel's integrity when it is
locked down.

* Add the HWPARAM flag to the module parameters
* When slram is built-in, it uses __setup() to read kernel parameters,
so add an explicit check security_locked_down() check
Ben Hutchings <ben@decadent.org.uk> yes 2019-08-30
features/all/lockdown/arm64-add-kernel-config-option-to-lock-down-when.patch arm64: add kernel config option to lock down when in Secure Boot mode
Add a kernel configuration option to lock down the kernel, to restrict
userspace's ability to modify the running kernel when UEFI Secure Boot is
enabled. Based on the x86 patch by Matthew Garrett.

Determine the state of Secure Boot in the EFI stub and pass this to the
kernel using the FDT.

[bwh: Forward-ported to 4.10: adjust context]
[Lukas Wunner: Forward-ported to 4.11: drop parts applied upstream]
[bwh: Forward-ported to 4.15 and lockdown patch set:
- Pass result of efi_get_secureboot() in stub through to
efi_set_secure_boot() in main kernel
- Use lockdown API and naming]
[bwh: Forward-ported to 4.19.3: adjust context in update_fdt()]
[dannf: Moved init_lockdown() call after uefi_init(), fixing SB detection]
[bwh: Drop call to init_lockdown(), as efi_set_secure_boot() now calls this]
[bwh: Forward-ported to 5.6: efi_get_secureboot() no longer takes a
sys_table parameter]
[bwh: Forward-ported to 5.7: EFI initialisation from FDT was rewritten, so:
- Add Secure Boot mode to the parameter enumeration in fdtparams.c
- Add a parameter to efi_get_fdt_params() to return the Secure Boot mode
- Since Xen does not have a property name defined for Secure Boot mode,
change efi_get_fdt_prop() to handle a missing property name by clearing
the output variable]
[Salvatore Bonaccorso: Forward-ported to 5.10: f30f242fb131 ("efi: Rename
arm-init to efi-init common for all arch") renamed arm-init.c to efi-init.c]
Linn Crosetto <linn@hpe.com> no debian 2016-08-30
features/all/db-mok-keyring/0001-MODSIGN-do-not-load-mok-when-secure-boot-disabled.patch [PATCH 1/5] MODSIGN: do not load mok when secure boot disabled
The mok can not be trusted when the secure boot is disabled. Which
means that the kernel embedded certificate is the only trusted key.

Due to db/dbx are authenticated variables, they needs manufacturer's
KEK for update. So db/dbx are secure when secureboot disabled.

[Rebased by Luca Boccassi]
[bwh: Forward-ported to 5.5.9:
- get_cert_list() takes a pointer to status and returns the cert list
- Adjust filename]
[Salvatore Bonaccorso: Forward-ported to 5.10: Refresh for changes in
38a1f03aa240 ("integrity: Move import of MokListRT certs to a separate
routine"). Refresh in context for change in ebd9c2ae369a ("integrity: Load mokx
variables into the blacklist keyring")]
"Lee, Chun-Yi" <joeyli.kernel@gmail.com> no https://lore.kernel.org/patchwork/patch/933173/ 2018-03-13
features/all/db-mok-keyring/0003-MODSIGN-checking-the-blacklisted-hash-before-loading-a-kernel-module.patch [PATCH 3/4] MODSIGN: checking the blacklisted hash before loading a kernel module

This patch adds the logic for checking the kernel module's hash
base on blacklist. The hash must be generated by sha256 and enrolled
to dbx/mokx.

For example:
sha256sum sample.ko
mokutil --mokx --import-hash $HASH_RESULT

Whether the signature on ko file is stripped or not, the hash can be
compared by kernel.

[Rebased by Luca Boccassi]
"Lee, Chun-Yi" <joeyli.kernel@gmail.com> no https://lore.kernel.org/patchwork/patch/933175/ 2018-03-13
features/all/db-mok-keyring/0004-MODSIGN-check-the-attributes-of-db-and-mok.patch [PATCH 4/4] MODSIGN: check the attributes of db and mok
That's better for checking the attributes of db and mok variables
before loading certificates to kernel keyring.

For db and dbx, both of them are authenticated variables. Which
means that they can only be modified by manufacturer's key. So
the kernel should checks EFI_VARIABLE_TIME_BASED_AUTHENTICATED_WRITE_ACCESS
attribute before we trust it.

For mok-rt and mokx-rt, both of them are created by shim boot loader
to forward the mok/mokx content to runtime. They must be runtime-volatile
variables. So kernel should checks that the attributes map did not set
EFI_VARIABLE_NON_VOLATILE bit before we trust it.

[Rebased by Luca Boccassi]
[bwh: Forward-ported to 5.5.9:
- get_cert_list() takes a pointer to status and returns the cert list
- Adjust filename, context]
[bwh: Forward-ported to 5.10: MokListRT and MokListXRT are now both
loaded through a single code path.]
"Lee, Chun-Yi" <joeyli.kernel@gmail.com> no https://lore.kernel.org/patchwork/patch/933176/ 2018-03-13
features/all/db-mok-keyring/modsign-make-shash-allocation-failure-fatal.patch MODSIGN: Make shash allocation failure fatal
mod_is_hash_blacklisted() currently returns 0 (suceess) if
crypto_alloc_shash() fails. This should instead be a fatal error,
so unwrap and pass up the error code.
Ben Hutchings <ben@decadent.org.uk> no 2019-05-05
features/all/db-mok-keyring/KEYS-Make-use-of-platform-keyring-for-module-signature.patch [PATCH] KEYS: Make use of platform keyring for module signature verify

This patch completes commit 278311e417be ("kexec, KEYS: Make use of
platform keyring for signature verify") which, while adding the
platform keyring for bzImage verification, neglected to also add
this keyring for module verification.

As such, kernel modules signed with keys from the MokList variable
were not successfully verified.
Robert Holmes <robeholmes@gmail.com> no debian https://src.fedoraproject.org/rpms/kernel/raw/master/f/KEYS-Make-use-of-platform-keyring-for-module-signature.patch 2019-04-23
debian/i386-686-pae-pci-set-pci-nobios-by-default.patch [i386/686-pae] PCI: Set pci=nobios by default
CONFIG_PCI_GOBIOS results in physical addresses 640KB-1MB being mapped
W+X, which is undesirable for security reasons and will result in a
warning at boot now that we enable CONFIG_DEBUG_WX.

This can be overridden using the kernel parameter "pci=nobios", but we
want to disable W+X by default. Disable PCI BIOS probing by default;
it can still be enabled using "pci=bios".
Ben Hutchings <ben@decadent.org.uk> not-needed 2016-02-16
debian/ntfs-mark-it-as-broken.patch ntfs: mark it as broken
NTFS has unfixed issues CVE-2018-12929, CVE-2018-12930, and
CVE-2018-12931. ntfs-3g is a better supported alternative.

Make sure it can't be enabled even in custom kernels.
Ben Hutchings <ben@decadent.org.uk> no 2019-04-25
bugfix/all/vfs-move-cap_convert_nscap-call-into-vfs_setxattr.patch vfs: move cap_convert_nscap() call into vfs_setxattr()
cap_convert_nscap() does permission checking as well as conversion of the
xattr value conditionally based on fs's user-ns.

This is needed by overlayfs and probably other layered fs (ecryptfs) and is
what vfs_foo() is supposed to do anyway.
Miklos Szeredi <mszeredi@redhat.com> no https://git.kernel.org/linus/7c03e2cda4a584cadc398e8f6641ca9988a39d52 2020-12-14
bugfix/all/ovl-fail-on-invalid-uid-gid-mapping-at-copy-up.patch ovl: fail on invalid uid/gid mapping at copy up
If st_uid/st_gid doesn't have a mapping in the mounter's user_ns, then
copy-up should fail, just like it would fail if the mounter task was doing
the copy using "cp -a".

There's a corner case where the "cp -a" would succeed but copy up fail: if
there's a mapping of the invalid uid/gid (65534 by default) in the user
namespace. This is because stat(2) will return this value if the mapping
doesn't exist in the current user_ns and "cp -a" will in turn be able to
create a file with this uid/gid.

This behavior would be inconsistent with POSIX ACL's, which return -1 for
invalid uid/gid which result in a failed copy.

For consistency and simplicity fail the copy of the st_uid/st_gid are
invalid.
Miklos Szeredi <mszeredi@redhat.com> no https://git.kernel.org/linus/4f11ada10d0ad3fd53e2bd67806351de63a4f9c3 2023-01-24
bugfix/all/module-disable-matching-missing-version-crc.patch module: Disable matching missing version CRC
This partly reverts commit cd3caefb4663e3811d37cc2afad3cce642d60061.
We want to fail closed if a symbol version CRC is missing, as the
alternative may allow subverting module signing.
Ben Hutchings <ben@decadent.org.uk> not-needed 2016-12-02
bugfix/all/usbip-document-tcp-wrappers.patch usbip: Document TCP wrappers
Add references to TCP wrappers configuration in the manual page.
Ben Hutchings <ben@decadent.org.uk> no 2012-06-24
bugfix/all/kbuild-fix-recordmcount-dependency.patch kbuild: Fix recordmcount dependency for OOT modules
We never rebuild anything in-tree when building an out-of-tree
modules, so external modules should not depend on the recordmcount
sources.
Ben Hutchings <ben@decadent.org.uk> no 2014-09-08
bugfix/all/tools-perf-man-date.patch perf tools: Use $KBUILD_BUILD_TIMESTAMP as man page date
This allows man pages to be built reproducibly.
Ben Hutchings <ben@decadent.org.uk> yes 2015-07-13
bugfix/all/tools-perf-remove-shebangs.patch tools/perf: Remove shebang lines from perf scripts
perf scripts need to be invoked through perf, not directly through
perl (or other language interpreter). So including shebang lines in
them is useless and possibly misleading.
Ben Hutchings <ben@decadent.org.uk> no 2015-09-25
bugfix/x86/revert-perf-build-fix-libunwind-feature-detection-on.patch Revert "perf build: Fix libunwind feature detection on 32-bit x86"
This reverts commit 05b41775e2edd69a83f592e3534930c934d4038e.
It broke feature detection that was working just fine for us.
Ben Hutchings <ben@decadent.org.uk> no 2015-09-25
bugfix/all/tools-build-remove-bpf-run-time-check-at-build-time.patch tools/build: Remove bpf() run-time check at build time
It is not correct to test that a syscall works on the build system's
kernel. We might be building on an earlier kernel version or with
security restrictions that block bpf().
Ben Hutchings <ben@decadent.org.uk> no 2016-02-21
bugfix/all/cpupower-bump-soname-version.patch cpupower: Bump soname version
Several functions in the libcpupower API are renamed or removed in
Linux 4.7. This is an backward-incompatible ABI change, so the
library soname should change from libcpupower.so.0 to
libcpupower.so.1.
Ben Hutchings <ben@decadent.org.uk> yes 2016-06-09
bugfix/all/libcpupower-hide-private-function.patch libcpupower: Hide private function
cpupower_read_sysfs() (previously known as sysfs_read_file()) is an
internal function in libcpupower and should not be exported when
libcpupower is a shared library. Change its visibility to "hidden".
Ben Hutchings <ben@decadent.org.uk> no 2018-12-01
bugfix/all/cpupower-fix-checks-for-cpu-existence.patch cpupower: Fix checks for CPU existence
Calls to cpufreq_cpu_exists(cpu) were converted to
cpupower_is_cpu_online(cpu) when libcpupower was introduced and the
former function was deleted. However, cpupower_is_cpu_online() does
not distinguish physically absent and offline CPUs, and does not set
errno.

cpufreq-set has already been fixed (commit c25badc9ceb6).

In cpufreq-bench, which prints an error message for offline CPUs,
properly distinguish and report the zero and negative cases.

[carnil: Update/Refresh patch for 4.14.17: The issue with the
incorrect check has been fixed with upstream commit 53d1cd6b125f.
Keep in the patch the distinction and report for the zero and
negative cases.]
Ben Hutchings <ben@decadent.org.uk> yes 2016-11-03
bugfix/all/tools-perf-pmu-events-fix-reproducibility.patch tools/perf: pmu-events: Fix reproducibility
jevents.c uses nftw() to enumerate files and outputs the corresponding
C structs in the order they are found. This makes it sensitive to
directory ordering, so that the perf executable is not reproducible.

To avoid this, store all the files and directories found and then sort
them by their (relative) path. (This maintains the parent-first
ordering that nftw() promises.) Then apply the existing callbacks to
them in the sorted order.

Don't both storing the stat buffers as we don't need them.
Ben Hutchings <ben@decadent.org.uk> yes 2019-08-25
bugfix/all/bpftool-fix-version-string-in-recursive-builds.patch bpftool: Fix version string in recursive builds
When bpftool is built as part of a Debian package build, which itself
uses make, "bpftool version" shows:

bpftool vmake[4]: Entering directory /build/linux-5.8/tools/bpf/bpftool 5.8.8.0 make[4]: Leaving directory /build/linux-5.8

Although we pass the "--no-print-directory" option, this is overridden
by the environment variable "MAKEFLAGS=w". Clear MAKEFLAGS for the
"make kernelversion" command.

I have no explanation for the doubled ".8" in the version string, but
this seems to fix that as well.
Ben Hutchings <benh@debian.org> yes 2020-08-14
debian/overlayfs-permit-mounts-in-userns.patch ovl: permit overlayfs mounts in user namespaces (taints kernel)
Permit overlayfs mounts within user namespaces to allow utilisation of e.g.
unprivileged LXC overlay snapshots.

Except by the Ubuntu community [1], overlayfs mounts in user namespaces are
expected to be a security risk [2] and thus are not enabled on upstream
Linux kernels. For the non-Ubuntu users that have to stick to unprivileged
overlay-based LXCs, this meant to patch and compile the kernel manually.
Instead, adding the kernel tainting 'permit_mounts_in_userns' module
parameter allows a kind of a user-friendly way to enable the feature.

Testable with:

sudo modprobe overlay permit_mounts_in_userns=1
sudo sysctl -w kernel.unprivileged_userns_clone=1
mkdir -p lower upper work mnt
unshare --map-root-user --mount \
mount -t overlay none mnt \
-o lowerdir=lower,upperdir=upper,workdir=work

[1]: Ubuntu allows unprivileged mounting of overlay filesystem
https://lists.ubuntu.com/archives/kernel-team/2014-February/038091.html

[2]: User namespaces + overlayfs = root privileges
https://lwn.net/Articles/671641/

[bwh: Forward-ported to 5.6: adjust context]
Nicolas Schier <nicolas@fjasle.eu> no 2018-11-19

All known versions for source package 'linux'

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