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Mathieu Desnoyers bcb6653734 rseq: Remove broken uapi field layout on 32-bit little endian 
[ Upstream commit bfdf4e6208 ]

The rseq rseq_cs.ptr.{ptr32,padding} uapi endianness handling is
entirely wrong on 32-bit little endian: a preprocessor logic mistake
wrongly uses the big endian field layout on 32-bit little endian
architectures.

Fortunately, those ptr32 accessors were never used within the kernel,
and only meant as a convenience for user-space.

Remove those and replace the whole rseq_cs union by a __u64 type, as
this is the only thing really needed to express the ABI. Document how
32-bit architectures are meant to interact with this field.

Fixes: ec9c82e03a ("rseq: uapi: Declare rseq_cs field as union, update includes")
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220127152720.25898-1-mathieu.desnoyers@efficios.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2022-04-08 13:57:39 +02:00
Documentation security: add sctp_assoc_established hook 2022-04-08 13:57:34 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
arch arm64: prevent instrumentation of bp hardening callbacks 2022-04-08 13:57:37 +02:00
block block: don't delete queue kobject before its children 2022-04-08 13:57:35 +02:00
certs certs: Fix build error when CONFIG_MODULE_SIG_KEY is empty 2022-01-23 00:08:44 +09:00
crypto crypto: authenc - Fix sleep in atomic context in decrypt_tail 2022-04-08 13:57:32 +02:00
drivers clocksource: acpi_pm: fix return value of __setup handler 2022-04-08 13:57:38 +02:00
fs f2fs: fix to enable ATGC correctly via gc_idle sysfs interface 2022-04-08 13:57:39 +02:00
include rseq: Remove broken uapi field layout on 32-bit little endian 2022-04-08 13:57:39 +02:00
init lib/stackdepot: allow optional init and stack_table allocation by kvmalloc() 2022-01-22 08:33:37 +02:00
ipc ipc/sem: do not sleep with a spin lock held 2022-02-04 09:25:05 -08:00
kernel rseq: Remove broken uapi field layout on 32-bit little endian 2022-04-08 13:57:39 +02:00
lib lib/raid6/test: fix multiple definition linking error 2022-04-08 13:57:28 +02:00
mm mm/kmemleak: reset tag when compare object pointer 2022-04-08 13:57:23 +02:00
net security: add sctp_assoc_established hook 2022-04-08 13:57:34 +02:00
samples samples/landlock: Fix path_list memory leak 2022-04-08 13:57:25 +02:00
scripts kconfig: fix failing to generate auto.conf 2022-02-12 23:24:19 +09:00
security KEYS: trusted: Avoid calling null function trusted_key_exit 2022-04-08 13:57:37 +02:00
sound ASoC: SOF: Intel: Fix NULL ptr dereference when ENOMEM 2022-04-08 13:57:25 +02:00
tools selftests/sgx: Treat CC as one argument 2022-04-08 13:57:34 +02:00
usr kbuild: remove include/linux/cyclades.h from header file check 2022-01-27 08:51:08 +01:00
virt KVM: Fix lockdep false negative during host resume 2022-02-17 09:52:50 -05:00
.clang-format genirq/msi: Make interrupt allocation less convoluted 2021-12-16 22:22:20 +01:00
.cocciconfig
…
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap MAINTAINERS: Update Jisheng's email address 2022-03-08 17:30:32 +01:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: replace a Microchip AT91 maintainer 2022-02-09 11:30:01 +01:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS Add Paolo Abeni to networking maintainers 2022-03-15 12:16:10 -07:00
Makefile Linux 5.17.1 2022-03-28 10:03:22 +02:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

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

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

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.