kpriv/linux-hardened
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
Minimal supplement to upstream Kernel Self Protection Project changes. Features already provided by SELinux + Yama and archs other than multiarch arm64 / x86_64 aren't in scope. Only tags have stable history. Shared IRC channel with KSPP: irc.libera.chat #linux-hardening
677856 commits 8 branches 1594 tags 3.2 GiB
C 97.7%
Assembly 1.2%
Shell 0.4%
Makefile 0.3%
Python 0.2%
Other 0.1%
Find a file
Andy Shevchenko f10e4bf663 gpio: acpi: Even more tighten up ACPI GPIO lookups 
The commit 10cf4899f8 ("gpiolib: tighten up ACPI legacy gpio lookups")
prevents to getting same resource twice if the driver asks twice using
different connection ID.

But the whole idea of fallback might bring some problems. Imagine the case when
we have two versions of BIOS/hardware where in one _DSD is introduced along
with GPIO resources, but the other one uses just plain GPIO resource for
another purpose

Case 1:

    Device (DEVX)
    {
        ...
        Name (_CRS, ResourceTemplate ()
        {
            GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
                    "\\_SB.GPO0", 0, ResourceConsumer) {15}
        })
        Name (_DSD, Package ()
        {
            ToUUID("daffd814-6eba-4d8c-8a91-bc9bbf4aa301"),
            Package ()
            {
                Package () {"some-gpios", Package() {^DEVX, 0, 0, 0 }},
            }
        })
    }

Case 2:

    Device (DEVX)
    {
        ...
        Name (_CRS, ResourceTemplate ()
        {
            GpioIo (Exclusive, PullUp, 0, 0, IoRestrictionInputOnly,
                    "\\_SB.GPO0", 0, ResourceConsumer) {27}
        })
    }

To prevent the possible misconfiguration tighten up even more GPIO ACPI lookups
for case without connection ID provided.

In the past the issue had been triggered by "use mctrl_gpio helpers" series
[1,2].

[1] commit 4ef03d3287 ("tty/serial/8250: use mctrl_gpio helpers")
[2] https://patchwork.kernel.org/patch/9283745/

Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Bastien Nocera <hadess@hadess.net>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Tested-by: Jarkko Nikula <jarkko.nikula@linux.intel.com>
Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
2017-05-29 11:17:51 +02:00
arch gpio: pcf857x: move header file out of I2C realm 2017-05-23 11:35:02 +02:00
block Merge branch 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm 2017-05-12 15:43:10 -07:00
certs scripts/spelling.txt: add "intialise(d)" pattern and fix typo instances 2017-05-08 17:15:13 -07:00
crypto treewide: use kv[mz]alloc* rather than opencoded variants 2017-05-08 17:15:13 -07:00
Documentation gpio: of: Add documentation of new sleep standard GPIO specifiers 2017-05-29 11:10:07 +02:00
drivers gpio: acpi: Even more tighten up ACPI GPIO lookups 2017-05-29 11:17:51 +02:00
firmware firmware/Makefile: force recompilation if makefile changes 2017-05-08 17:15:10 -07:00
fs Merge branch 'for-linus' of git://git.kernel.dk/linux-block 2017-05-20 16:12:30 -07:00
include gpio: Add new flags to control sleep status of GPIOs 2017-05-29 11:07:55 +02:00
init Merge branch 'core-rcu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-10 10:30:46 -07:00
ipc mm: introduce kv[mz]alloc helpers 2017-05-08 17:15:12 -07:00
kernel Merge branch 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-05-21 11:52:00 -07:00
lib dmaengine updates for 4.12-rc1 2017-05-09 15:40:28 -07:00
mm mm: vmscan: scan until it finds eligible pages 2017-05-12 15:57:16 -07:00
net xen: fixes for 4.12 rc2 2017-05-19 15:06:48 -07:00
samples samples/bpf: run cleanup routines when receiving SIGTERM 2017-05-11 21:43:30 -04:00
scripts DeviceTree fixes for 4.12-rc: 2017-05-19 15:03:24 -07:00
security Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-05-09 09:12:53 -07:00
sound drm/i915: Fix runtime PM for LPE audio 2017-05-15 14:44:11 +03:00
tools This fixes a bug caused by not cleaning up the new instance unique triggers 2017-05-20 23:39:03 -07:00
usr initramfs: provide a way to ignore image provided by bootloader 2017-05-08 17:15:12 -07:00
virt KVM: arm/arm64: Hold slots_lock when unregistering kvm io bus devices 2017-05-18 11:18:16 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Add hch to .get_maintainer.ignore 2015-08-21 14:30:10 -07:00
.gitattributes .gitattributes: set git diff driver for C source code files 2016-10-07 18:46:30 -07:00
.gitignore kbuild: Add support to generate LLVM assembly files 2017-04-25 08:13:52 +09:00
.mailmap power supply and reset changes for the v4.12 series (part 2) 2017-05-12 12:02:21 -07:00
COPYING
CREDITS avr32: remove support for AVR32 architecture 2017-05-01 09:27:15 +02:00
Kbuild kbuild: Consolidate header generation from ASM offset information 2017-04-13 05:43:37 +09:00
Kconfig
MAINTAINERS gpio: xra1403: Add XRA1403 support to MAINTAINERS file 2017-05-22 17:50:11 +02:00
Makefile Linux 4.12-rc2 2017-05-21 19:30:23 -07:00
README README: add a new README file, pointing to the Documentation/ 2016-10-24 08:12:35 -02:00

README 

Linux kernel
============

This file was moved to Documentation/admin-guide/README.rst

Please notice that there are several guides for kernel developers and users.
These guides can be rendered in a number of formats, like HTML and PDF.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
See Documentation/00-INDEX for a list of what is contained in each file.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.