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Author SHA1 Message Date
Masahiro Yamada
d5d2d4cc60 kbuild: rpm-pkg: derive the Version from %{KERNELRELEASE} 
Avoid hard-coding the Version field in the generated spec file.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
fe66b5d2ae kbuild: refactor kernel-devel RPM package and linux-headers Deb package 
The kernel-devel RPM package and the linux-headers Debian package
provide headers and scripts needed for building external modules.

They copy the necessary files in slightly different ways - the RPM
copies almost everything except some exclude patterns, while the Debian
copies less number of files. There is no need to maintain different code
to do the same thing.

Split the Debian code out to scripts/package/install-extmod-build, which
is called from both of the packages.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
76a48b8ffb kbuild: add a phony target to run a command with Kbuild env vars 
There are some cases where we want to run a command with the same
environment variables as Kbuild uses. For example, 'make coccicheck'
invokes scripts/coccicheck from the top Makefile so that the script can
reference to ${LINUXINCLUDE}, ${KBUILD_EXTMOD}, etc. The top Makefile
defines several phony targets that run a script.

We do it also for an internally used script, which results in a somewhat
complex call graph.

One example:

 debian/rules binary-arch
   -> make intdeb-pkg
      -> scripts/package/builddeb

It is also tedious to add a dedicated target like 'intdeb-pkg' for each
use case.

Add a generic target 'run-command' to run an arbitrary command in an
environment with all Kbuild variables set.

The usage is:

  $ make run-command KBUILD_RUN_COMMAND=<command>

The concept is similar to:

  $ dpkg-architecture -c <command>

This executes <command> in an environment which has all DEB_* variables
defined.

Convert the existing 'make intdeb-pkg'.

Another possible usage is to interrogate a Make variable.

  $ make run-command KBUILD_RUN_COMMAND='echo $(KBUILD_CFLAGS)'

might be useful to see KBUILD_CFLAGS set by the top Makefile.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
93ed5605c6 kbuild: rpm-pkg: replace $KERNELRELEASE in spec file with %{KERNELRELEASE} 
Avoid hard-coding the value of KERNELRELEASE in the generated spec file.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
5d8e41b518 kbuild: rpm-pkg: replace $__KERNELRELEASE in spec file with %{version} 
${version} will be replaced with the value of the Version field.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
a06d9ef897 kbuild: rpm-pkg: record ARCH option in spec file 
Currently, we rely on the top Makefile defining ARCH option when we
run 'make rpm-pkg' or 'make binrpm-pkg'.

It does not apply when we run 'make srcrpm-pkg', and separately run
'rpmbuild' for the generated SRPM. This is a problem for cross-build.

Just like the Debian package, save the value of ARCH in the spec file.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
fe809b8271 kbuild: rpm-pkg: use %{makeflags} to pass common Make options 
This is useful to pass more common Make options.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
192868258d kbuild: rpm-pkg: do not hard-code $MAKE in spec file 
Currently, $MAKE will expand to the GNU Make program that created the
source RPM. This is problematic if you carry it to a different build
host to run 'rpmbuild' there.

Consider this command:

  $ /path/to/my/custom/make srcrpm-pkg

The spec file in the SRPM will record '/path/to/my/custom/make', which
exists only on that build environment.

To create a portable SRPM, the spec file should avoid hard-coding $MAKE.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
61eca933d0 kbuild: rpm-pkg: remove unneeded '-f $srctree/Makefile' in spec file 
This is unneeded because the Makefile in the output directory wraps
the top-level Makefile in the srctree.

Just run $MAKE irrespective of the build location.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
233046a2af kbuild: rpm-pkg: define _arch conditionally 
Commit 3089b2be0c ("kbuild: rpm-pkg: fix build error when _arch is
undefined") does not work as intended; _arch is always defined as
$UTS_MACHINE.

The intention was to define _arch to $UTS_MACHINE only when it is not
defined.

Fixes: 3089b2be0c ("kbuild: rpm-pkg: fix build error when _arch is undefined")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Michal Suchanek
4d15c9fa05 Revert "kbuild: Hack for depmod not handling X.Y versions" 
Remove hack for ancient version of module-init-tools that was added in
Linux 3.0.

Since then module-init-tools was replaced with kmod.

This hack adds an additional indirection, and causes confusing errors
to be printed when depmod fails.

Reverts commit 8fc62e5942 ("kbuild: Do not write to builddir in modules_install")
Reverts commit bfe5424a8b ("kbuild: Hack for depmod not handling X.Y versions")

Link: https://lore.kernel.org/linux-modules/CAK7LNAQMs3QBYfWcLkmOQdbbq7cj=7wWbK=AWhdTC2rAsKHXzQ@mail.gmail.com/

Signed-off-by: Michal Suchanek <msuchanek@suse.de>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
356f0cb7ef kconfig: menuconfig: remove jump_key::index 
You do not need to remember the index of each jump key because you can
count it up after a key is pressed.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Jesse Taube <Mr.Bossman075@gmail.com>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
e14f1242a8 kconfig: menuconfig: simplify global jump key assignment 
Commit 95ac9b3b58 ("menuconfig: Assign jump keys per-page instead
of globally") injected a lot of hacks to the bottom of the textbox
infrastructure.

I reverted many of them without changing the behavior. (almost)
Now, the key markers are inserted when constructing the search result
instead of updating the text buffer on-the-fly.

The buffer passed to the textbox got back to a constant string.
The ugly casts from (const char *) to (char *) went away.

A disadvantage is that the same key numbers might be displayed multiple
times in the dialog if you use a huge window (but I believe it is
unlikely to happen).

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Jesse Taube <Mr.Bossman075@gmail.com>
 2023-07-25 00:59:32 +09:00
Masahiro Yamada
481461f510 linux/export.h: make <linux/export.h> independent of CONFIG_MODULES 
Currently, all files with EXPORT_SYMBOL() are rebuilt when CONFIG_MODULES
is flipped due to <linux/export.h> depending on CONFIG_MODULES.

Now that modpost can make a final decision about export symbols,
<linux/export.h> does not need to make EXPORT_SYMBOL() no-op.
Instead, modpost can skip emitting KSYMTAB when CONFIG_MODULES is unset.

This commit will reduce the number of recompilation when CONFIG_MODULES
is toggled.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-25 00:59:32 +09:00
Linus Torvalds
12a5336ca3 Kbuild fixes for v6.5 
- Fix stale help text in gconfig
 
  - Support *.S files in compile_commands.json
 
  - Flatten KBUILD_CFLAGS
 
  - Fix external module builds with Rust so that temporary files are
    created in the modules directories instead of the kernel tree
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Merge tag 'kbuild-fixes-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild fixes from Masahiro Yamada:

 - Fix stale help text in gconfig

 - Support *.S files in compile_commands.json

 - Flatten KBUILD_CFLAGS

 - Fix external module builds with Rust so that temporary files are
   created in the modules directories instead of the kernel tree

* tag 'kbuild-fixes-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild:
  kbuild: rust: avoid creating temporary files
  kbuild: flatten KBUILD_CFLAGS
  gen_compile_commands: add assembly files to compilation database
  kconfig: gconfig: correct program name in help text
  kconfig: gconfig: drop the Show Debug Info help text
 2023-07-23 14:55:41 -07:00
Miguel Ojeda
df01b7cfce kbuild: rust: avoid creating temporary files 
`rustc` outputs by default the temporary files (i.e. the ones saved
by `-Csave-temps`, such as `*.rcgu*` files) in the current working
directory when `-o` and `--out-dir` are not given (even if
`--emit=x=path` is given, i.e. it does not use those for temporaries).

Since out-of-tree modules are compiled from the `linux` tree,
`rustc` then tries to create them there, which may not be accessible.

Thus pass `--out-dir` explicitly, even if it is just for the temporary
files.

Similarly, do so for Rust host programs too.

Reported-by: Raphael Nestler <raphael.nestler@gmail.com>
Closes: https://github.com/Rust-for-Linux/linux/issues/1015
Reported-by: Andrea Righi <andrea.righi@canonical.com>
Tested-by: Raphael Nestler <raphael.nestler@gmail.com> # non-hostprogs
Tested-by: Andrea Righi <andrea.righi@canonical.com> # non-hostprogs
Fixes: 295d8398c6 ("kbuild: specify output names separately for each emission type from rustc")
Cc: stable@vger.kernel.org
Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Tested-by: Martin Rodriguez Reboredo <yakoyoku@gmail.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-24 03:15:31 +09:00
Benjamin Gray
1c67921444 gen_compile_commands: add assembly files to compilation database 
Like C source files, tooling can find it useful to have the assembly
source file compilation recorded.

The .S extension appears to used across all architectures.

Signed-off-by: Benjamin Gray <bgray@linux.ibm.com>
Reviewed-by: Fangrui Song <maskray@google.com>
Reviewed-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-23 22:36:07 +09:00
Yonghong Song
8cc32a9bbf kallsyms: strip LTO-only suffixes from promoted global functions 
Commit 6eb4bd92c1 ("kallsyms: strip LTO suffixes from static functions")
stripped all function/variable suffixes started with '.' regardless
of whether those suffixes are generated at LTO mode or not. In fact,
as far as I know, in LTO mode, when a static function/variable is
promoted to the global scope, '.llvm.<...>' suffix is added.

The existing mechanism breaks live patch for a LTO kernel even if
no <symbol>.llvm.<...> symbols are involved. For example, for the following
kernel symbols:
  $ grep bpf_verifier_vlog /proc/kallsyms
  ffffffff81549f60 t bpf_verifier_vlog
  ffffffff8268b430 d bpf_verifier_vlog._entry
  ffffffff8282a958 d bpf_verifier_vlog._entry_ptr
  ffffffff82e12a1f d bpf_verifier_vlog.__already_done
'bpf_verifier_vlog' is a static function. '_entry', '_entry_ptr' and
'__already_done' are static variables used inside 'bpf_verifier_vlog',
so llvm promotes them to file-level static with prefix 'bpf_verifier_vlog.'.
Note that the func-level to file-level static function promotion also
happens without LTO.

Given a symbol name 'bpf_verifier_vlog', with LTO kernel, current mechanism will
return 4 symbols to live patch subsystem which current live patching
subsystem cannot handle it. With non-LTO kernel, only one symbol
is returned.

In [1], we have a lengthy discussion, the suggestion is to separate two
cases:
  (1). new symbols with suffix which are generated regardless of whether
       LTO is enabled or not, and
  (2). new symbols with suffix generated only when LTO is enabled.

The cleanup_symbol_name() should only remove suffixes for case (2).
Case (1) should not be changed so it can work uniformly with or without LTO.

This patch removed LTO-only suffix '.llvm.<...>' so live patching and
tracing should work the same way for non-LTO kernel.
The cleanup_symbol_name() in scripts/kallsyms.c is also changed to have the same
filtering pattern so both kernel and kallsyms tool have the same
expectation on the order of symbols.

 [1] https://lore.kernel.org/live-patching/20230615170048.2382735-1-song@kernel.org/T/#u

Fixes: 6eb4bd92c1 ("kallsyms: strip LTO suffixes from static functions")
Reported-by: Song Liu <song@kernel.org>
Signed-off-by: Yonghong Song <yhs@fb.com>
Reviewed-by: Zhen Lei <thunder.leizhen@huawei.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Acked-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20230628181926.4102448-1-yhs@fb.com
Signed-off-by: Kees Cook <keescook@chromium.org>
 2023-07-12 15:39:34 -07:00
Randy Dunlap
30ebf2ce70 kconfig: gconfig: correct program name in help text 
Change "gkc" to "gconfig" in 3 places since it is called "gconfig" and
not "gkc". Add a period at the end of one sentence.

Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-12 23:46:57 +09:00
Randy Dunlap
390ef8c0a3 kconfig: gconfig: drop the Show Debug Info help text 
The Show Debug Info option was removed eons ago. Now finish the job
by removing the help text for it also.

Fixes: 7b5d87215b ("gconfig: remove show_debug option")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-07-12 23:46:29 +09:00
Linus Torvalds
7210de3a32 A half-dozen late arriving docs patches. They are mostly fixes, but we 
also have a kernel-doc tweak for enums and the long-overdue removal of the
 outdated and redundant patch-submission comments at the top of the
 MAINTAINERS file.
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Merge tag 'docs-6.5-2' of git://git.lwn.net/linux

Pull mode documentation updates from Jonathan Corbet:
 "A half-dozen late arriving docs patches. They are mostly fixes, but we
  also have a kernel-doc tweak for enums and the long-overdue removal of
  the outdated and redundant patch-submission comments at the top of the
  MAINTAINERS file"

* tag 'docs-6.5-2' of git://git.lwn.net/linux:
  scripts: kernel-doc: support private / public marking for enums
  Documentation: KVM: SEV: add a missing backtick
  Documentation: ACPI: fix typo in ssdt-overlays.rst
  Fix documentation of panic_on_warn
  docs: remove the tips on how to submit patches from MAINTAINERS
  docs: fix typo in zh_TW and zh_CN translation
 2023-07-06 22:15:38 -07:00
Linus Torvalds
2a95b03d4c parisc architecture fixes and updates for kernel v6.5-rc1 (pt 2): 
* Fix all compiler warnings in arch/parisc and drivers/parisc when
   compiled with W=1
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Merge tag 'parisc-for-6.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull more parisc architecture updates from Helge Deller:

 -  Fix all compiler warnings in arch/parisc and drivers/parisc when
    compiled with W=1

* tag 'parisc-for-6.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: syscalls: Avoid compiler warnings with W=1
  parisc: math-emu: Avoid compiler warnings with W=1
  parisc: Raise minimal GCC version to 12.0.0
  parisc: unwind: Avoid missing prototype warning for handle_interruption()
  parisc: smp: Add declaration for start_cpu_itimer()
  parisc: pdt: Get prototype for arch_report_meminfo()
 2023-07-05 10:28:38 -07:00
Linus Torvalds
04f2933d37 Scope-based Resource Management infrastructure 
These are the first few patches in the Scope-based Resource Management
 series that introduce the infrastructure but not any conversions as of
 yet.
 
 Adding the infrastructure now allows multiple people to start using them.
 
 Of note is that Sparse will need some work since it doesn't yet
 understand this attribute and might have decl-after-stmt issues -- but I
 think that's being worked on.
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Merge tag 'core_guards_for_6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue

Pull scope-based resource management infrastructure from Peter Zijlstra:
 "These are the first few patches in the Scope-based Resource Management
  series that introduce the infrastructure but not any conversions as of
  yet.

  Adding the infrastructure now allows multiple people to start using
  them.

  Of note is that Sparse will need some work since it doesn't yet
  understand this attribute and might have decl-after-stmt issues"

* tag 'core_guards_for_6.5_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue:
  kbuild: Drop -Wdeclaration-after-statement
  locking: Introduce __cleanup() based infrastructure
  apparmor: Free up __cleanup() name
  dmaengine: ioat: Free up __cleanup() name
 2023-07-04 13:50:38 -07:00
Jakub Kicinski
e27cb89a22 scripts: kernel-doc: support private / public marking for enums 
Enums benefit from private markings, too. For netlink attribute
name enums always end with a pair of __$n_MAX and $n_MAX members.
Documenting them feels a bit tedious.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Tested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20230621223525.2722703-1-kuba@kernel.org>
 2023-07-04 08:30:49 -06:00
Linus Torvalds
44aeec836d Char/Misc and other driver subsystem updates for 6.5-rc1 
Here is the big set of char/misc and other driver subsystem updates for
 6.5-rc1.
 
 Lots of different, tiny, stuff in here, from a range of smaller driver
 subsystems, including pulls from some substems directly:
   - IIO driver updates and additions
   - W1 driver updates and fixes (and a new maintainer!)
   - FPGA driver updates and fixes
   - Counter driver updates
   - Extcon driver updates
   - Interconnect driver updates
   - Coresight driver updates
   - mfd tree tag merge needed for other updates
 on top of that, lots of small driver updates as patches, including:
   - static const updates for class structures
   - nvmem driver updates
   - pcmcia driver fix
   - lots of other small driver updates and fixes
 
 All of these have been in linux-next for a while with no reported
 problems.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'char-misc-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull Char/Misc updates from Greg KH:
 "Here is the big set of char/misc and other driver subsystem updates
  for 6.5-rc1.

  Lots of different, tiny, stuff in here, from a range of smaller driver
  subsystems, including pulls from some substems directly:

   - IIO driver updates and additions

   - W1 driver updates and fixes (and a new maintainer!)

   - FPGA driver updates and fixes

   - Counter driver updates

   - Extcon driver updates

   - Interconnect driver updates

   - Coresight driver updates

   - mfd tree tag merge needed for other updates on top of that, lots of
     small driver updates as patches, including:

   - static const updates for class structures

   - nvmem driver updates

   - pcmcia driver fix

   - lots of other small driver updates and fixes

  All of these have been in linux-next for a while with no reported
  problems"

* tag 'char-misc-6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (243 commits)
  bsr: fix build problem with bsr_class static cleanup
  comedi: make all 'class' structures const
  char: xillybus: make xillybus_class a static const structure
  xilinx_hwicap: make icap_class a static const structure
  virtio_console: make port class a static const structure
  ppdev: make ppdev_class a static const structure
  char: misc: make misc_class a static const structure
  /dev/mem: make mem_class a static const structure
  char: lp: make lp_class a static const structure
  dsp56k: make dsp56k_class a static const structure
  bsr: make bsr_class a static const structure
  oradax: make 'cl' a static const structure
  hwtracing: hisi_ptt: Fix potential sleep in atomic context
  hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU
  hwtracing: hisi_ptt: Export available filters through sysfs
  hwtracing: hisi_ptt: Add support for dynamically updating the filter list
  hwtracing: hisi_ptt: Factor out filter allocation and release operation
  samples: pfsm: add CC_CAN_LINK dependency
  misc: fastrpc: check return value of devm_kasprintf()
  coresight: dummy: Update type of mode parameter in dummy_{sink,source}_enable()
  ...
 2023-07-03 12:46:47 -07:00
Helge Deller
28e113f89f parisc: Raise minimal GCC version to 12.0.0 
Raise the minimum gcc version for parisc64 to 12.0.0 (for __int128 type)
and keep 5.1.0 as minimum for 32-bit parisc target.

Fixes: 8664645ade ("parisc: Raise minimal GCC version")
Signed-off-by: Helge Deller <deller@gmx.de>
 2023-07-03 18:56:03 +02:00
Linus Torvalds
ad2885979e Kbuild updates for v6.5 
- Remove the deprecated rule to build *.dtbo from *.dts
 
  - Refactor section mismatch detection in modpost
 
  - Fix bogus ARM section mismatch detections
 
  - Fix error of 'make gtags' with O= option
 
  - Add Clang's target triple to KBUILD_CPPFLAGS to fix a build error with
    the latest LLVM version
 
  - Rebuild the built-in initrd when KBUILD_BUILD_TIMESTAMP is changed
 
  - Ignore more compiler-generated symbols for kallsyms
 
  - Fix 'make local*config' to handle the ${CONFIG_FOO} form in Makefiles
 
  - Enable more kernel-doc warnings with W=2
 
  - Refactor <linux/export.h> by generating KSYMTAB data by modpost
 
  - Deprecate <asm/export.h> and <asm-generic/export.h>
 
  - Remove the EXPORT_DATA_SYMBOL macro
 
  - Move the check for static EXPORT_SYMBOL back to modpost, which makes
    the build faster
 
  - Re-implement CONFIG_TRIM_UNUSED_KSYMS with one-pass algorithm
 
  - Warn missing MODULE_DESCRIPTION when building modules with W=1
 
  - Make 'make clean' robust against too long argument error
 
  - Exclude more objects from GCOV to fix CFI failures with GCOV
 
  - Allow 'make modules_install' to install modules.builtin and
    modules.builtin.modinfo even when CONFIG_MODULES is disabled
 
  - Include modules.builtin and modules.builtin.modinfo in the linux-image
    Debian package even when CONFIG_MODULES is disabled
 
  - Revive "Entering directory" logging for the latest Make version
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Merge tag 'kbuild-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

Pull Kbuild updates from Masahiro Yamada:

 - Remove the deprecated rule to build *.dtbo from *.dts

 - Refactor section mismatch detection in modpost

 - Fix bogus ARM section mismatch detections

 - Fix error of 'make gtags' with O= option

 - Add Clang's target triple to KBUILD_CPPFLAGS to fix a build error
   with the latest LLVM version

 - Rebuild the built-in initrd when KBUILD_BUILD_TIMESTAMP is changed

 - Ignore more compiler-generated symbols for kallsyms

 - Fix 'make local*config' to handle the ${CONFIG_FOO} form in Makefiles

 - Enable more kernel-doc warnings with W=2

 - Refactor <linux/export.h> by generating KSYMTAB data by modpost

 - Deprecate <asm/export.h> and <asm-generic/export.h>

 - Remove the EXPORT_DATA_SYMBOL macro

 - Move the check for static EXPORT_SYMBOL back to modpost, which makes
   the build faster

 - Re-implement CONFIG_TRIM_UNUSED_KSYMS with one-pass algorithm

 - Warn missing MODULE_DESCRIPTION when building modules with W=1

 - Make 'make clean' robust against too long argument error

 - Exclude more objects from GCOV to fix CFI failures with GCOV

 - Allow 'make modules_install' to install modules.builtin and
   modules.builtin.modinfo even when CONFIG_MODULES is disabled

 - Include modules.builtin and modules.builtin.modinfo in the
   linux-image Debian package even when CONFIG_MODULES is disabled

 - Revive "Entering directory" logging for the latest Make version

* tag 'kbuild-v6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: (72 commits)
  modpost: define more R_ARM_* for old distributions
  kbuild: revive "Entering directory" for Make >= 4.4.1
  kbuild: set correct abs_srctree and abs_objtree for package builds
  scripts/mksysmap: Ignore prefixed KCFI symbols
  kbuild: deb-pkg: remove the CONFIG_MODULES check in buildeb
  kbuild: builddeb: always make modules_install, to install modules.builtin*
  modpost: continue even with unknown relocation type
  modpost: factor out Elf_Sym pointer calculation to section_rel()
  modpost: factor out inst location calculation to section_rel()
  kbuild: Disable GCOV for *.mod.o
  kbuild: Fix CFI failures with GCOV
  kbuild: make clean rule robust against too long argument error
  script: modpost: emit a warning when the description is missing
  kbuild: make modules_install copy modules.builtin(.modinfo)
  linux/export.h: rename 'sec' argument to 'license'
  modpost: show offset from symbol for section mismatch warnings
  modpost: merge two similar section mismatch warnings
  kbuild: implement CONFIG_TRIM_UNUSED_KSYMS without recursion
  modpost: use null string instead of NULL pointer for default namespace
  modpost: squash sym_update_namespace() into sym_add_exported()
  ...
 2023-07-01 09:24:31 -07:00
Linus Torvalds
b25f62ccb4 VFIO updates for v6.5-rc1 
- Adjust log levels for common messages. (Oleksandr Natalenko,
    Alex Williamson)
 
  - Support for dynamic MSI-X allocation. (Reinette Chatre)
 
  - Enable and report PCIe AtomicOp Completer capabilities.
    (Alex Williamson)
 
  - Cleanup Kconfigs for vfio bus drivers. (Alex Williamson)
 
  - Add support for CDX bus based devices. (Nipun Gupta)
 
  - Fix race with concurrent mdev initialization. (Eric Farman)
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Merge tag 'vfio-v6.5-rc1' of https://github.com/awilliam/linux-vfio

Pull VFIO updates from Alex Williamson:

 - Adjust log levels for common messages (Oleksandr Natalenko, Alex
   Williamson)

 - Support for dynamic MSI-X allocation (Reinette Chatre)

 - Enable and report PCIe AtomicOp Completer capabilities (Alex
   Williamson)

 - Cleanup Kconfigs for vfio bus drivers (Alex Williamson)

 - Add support for CDX bus based devices (Nipun Gupta)

 - Fix race with concurrent mdev initialization (Eric Farman)

* tag 'vfio-v6.5-rc1' of https://github.com/awilliam/linux-vfio:
  vfio/mdev: Move the compat_class initialization to module init
  vfio/cdx: add support for CDX bus
  vfio/fsl: Create Kconfig sub-menu
  vfio/platform: Cleanup Kconfig
  vfio/pci: Cleanup Kconfig
  vfio/pci-core: Add capability for AtomicOp completer support
  vfio/pci: Also demote hiding standard cap messages
  vfio/pci: Clear VFIO_IRQ_INFO_NORESIZE for MSI-X
  vfio/pci: Support dynamic MSI-X
  vfio/pci: Probe and store ability to support dynamic MSI-X
  vfio/pci: Use bitfield for struct vfio_pci_core_device flags
  vfio/pci: Update stale comment
  vfio/pci: Remove interrupt context counter
  vfio/pci: Use xarray for interrupt context storage
  vfio/pci: Move to single error path
  vfio/pci: Prepare for dynamic interrupt context storage
  vfio/pci: Remove negative check on unsigned vector
  vfio/pci: Consolidate irq cleanup on MSI/MSI-X disable
  vfio/pci: demote hiding ecap messages to debug level
 2023-06-30 15:22:09 -07:00
Linus Torvalds
d8b0bd57c2 powerpc updates for 6.5 
- Extend KCSAN support to 32-bit and BookE. Add some KCSAN annotations.
 
  - Make ELFv2 ABI the default for 64-bit big-endian kernel builds, and use
    the -mprofile-kernel option (kernel specific ftrace ABI) for big endian
    ELFv2 kernels.
 
  - Add initial Dynamic Execution Control Register (DEXCR) support, and allow
    the ROP protection instructions to be used on Power 10.
 
  - Various other small features and fixes.
 
 Thanks to: Aditya Gupta, Aneesh Kumar K.V, Benjamin Gray, Brian King,
 Christophe Leroy, Colin Ian King, Dmitry Torokhov, Gaurav Batra, Jean Delvare,
 Joel Stanley, Marco Elver, Masahiro Yamada, Nageswara R Sastry, Nathan
 Chancellor, Naveen N Rao, Nayna Jain, Nicholas Piggin, Paul Gortmaker, Randy
 Dunlap, Rob Herring, Rohan McLure, Russell Currey, Sachin Sant, Timothy
 Pearson, Tom Rix, Uwe Kleine-König.
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Merge tag 'powerpc-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux

Pull powerpc updates from Michael Ellerman:

 - Extend KCSAN support to 32-bit and BookE. Add some KCSAN annotations

 - Make ELFv2 ABI the default for 64-bit big-endian kernel builds, and
   use the -mprofile-kernel option (kernel specific ftrace ABI) for big
   endian ELFv2 kernels

 - Add initial Dynamic Execution Control Register (DEXCR) support, and
   allow the ROP protection instructions to be used on Power 10

 - Various other small features and fixes

Thanks to Aditya Gupta, Aneesh Kumar K.V, Benjamin Gray, Brian King,
Christophe Leroy, Colin Ian King, Dmitry Torokhov, Gaurav Batra, Jean
Delvare, Joel Stanley, Marco Elver, Masahiro Yamada, Nageswara R Sastry,
Nathan Chancellor, Naveen N Rao, Nayna Jain, Nicholas Piggin, Paul
Gortmaker, Randy Dunlap, Rob Herring, Rohan McLure, Russell Currey,
Sachin Sant, Timothy Pearson, Tom Rix, and Uwe Kleine-König.

* tag 'powerpc-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (76 commits)
  powerpc: remove checks for binutils older than 2.25
  powerpc: Fail build if using recordmcount with binutils v2.37
  powerpc/iommu: TCEs are incorrectly manipulated with DLPAR add/remove of memory
  powerpc/iommu: Only build sPAPR access functions on pSeries
  powerpc: powernv: Annotate data races in opal events
  powerpc: Mark writes registering ipi to host cpu through kvm and polling
  powerpc: Annotate accesses to ipi message flags
  powerpc: powernv: Fix KCSAN datarace warnings on idle_state contention
  powerpc: Mark [h]ssr_valid accesses in check_return_regs_valid
  powerpc: qspinlock: Enforce qnode writes prior to publishing to queue
  powerpc: qspinlock: Mark accesses to qnode lock checks
  powerpc/powernv/pci: Remove last IODA1 defines
  powerpc/powernv/pci: Remove MVE code
  powerpc/powernv/pci: Remove ioda1 support
  powerpc: 52xx: Make immr_id DT match tables static
  powerpc: mpc512x: Remove open coded "ranges" parsing
  powerpc: fsl_soc: Use of_range_to_resource() for "ranges" parsing
  powerpc: fsl: Use of_property_read_reg() to parse "reg"
  powerpc: fsl_rio: Use of_range_to_resource() for "ranges" parsing
  macintosh: Use of_property_read_reg() to parse "reg"
  ...
 2023-06-30 09:20:08 -07:00
Linus Torvalds
112e7e2151 LoongArch changes for v6.5 
1, Preliminary ClangBuiltLinux enablement;
 2, Add support to clone a time namespace;
 3, Add vector extensions support;
 4, Add SMT (Simultaneous Multi-Threading) support;
 5, Support dbar with different hints;
 6, Introduce hardware page table walker;
 7, Add jump-label implementation;
 8, Add rethook and uprobes support;
 9, Some bug fixes and other small changes.
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Merge tag 'loongarch-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson

Pull LoongArch updates from Huacai Chen:

 - preliminary ClangBuiltLinux enablement

 - add support to clone a time namespace

 - add vector extensions support

 - add SMT (Simultaneous Multi-Threading) support

 - support dbar with different hints

 - introduce hardware page table walker

 - add jump-label implementation

 - add rethook and uprobes support

 - some bug fixes and other small changes

* tag 'loongarch-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson: (28 commits)
  LoongArch: Remove five DIE_* definitions in kdebug.h
  LoongArch: Add uprobes support
  LoongArch: Use larch_insn_gen_break() for kprobes
  LoongArch: Add larch_insn_gen_break() to generate break insns
  LoongArch: Check for AMO instructions in insns_not_supported()
  LoongArch: Move three functions from kprobes.c to inst.c
  LoongArch: Replace kretprobe with rethook
  LoongArch: Add jump-label implementation
  LoongArch: Select HAVE_DEBUG_KMEMLEAK to support kmemleak
  LoongArch: Export some arch-specific pm interfaces
  LoongArch: Introduce hardware page table walker
  LoongArch: Support dbar with different hints
  LoongArch: Add SMT (Simultaneous Multi-Threading) support
  LoongArch: Add vector extensions support
  LoongArch: Add support to clone a time namespace
  Makefile: Add loongarch target flag for Clang compilation
  LoongArch: Mark Clang LTO as working
  LoongArch: Include KBUILD_CPPFLAGS in CHECKFLAGS invocation
  LoongArch: vDSO: Use CLANG_FLAGS instead of filtering out '--target='
  LoongArch: Tweak CFLAGS for Clang compatibility
  ...
 2023-06-30 08:52:28 -07:00
Linus Torvalds
6c1561fb90 ARM: SoC devicetree updates for 6.5 
The biggest change this time is for the 32-bit devicetree files, which
 are all moved to a new location, using separate subdirectories for each
 SoC vendor, following the same scheme that is used on arm64, mips and
 riscv. This has been discussed for many years, but so far we never did
 this as there was a plan to move the files out of the kernel entirely,
 which has never happened.
 
 The impact of this will be that all external patches no longer apply,
 and anything depending on the location of the dtb files in the build
 directory will have to change. The installed files after 'make
 dtbs_install' keep the current location.
 
 There are six added SoCs here that are largely variants of previously
 added chips. Two other chips are added in a separate branch along
 with their device drivers.
 
 * The Samsung Exynos 4212 makes its return after the Samsung Galaxy
   Express phone is addded at last. The SoC support was originally
   added in 2012 but removed again in 2017 as it was unused at the time.
 
 * Amlogic C3 is a Cortex-A35 based smart IP camera chip
 
 * Qualcomm MSM8939 (Snapdragon 615) is a more featureful variant of
   the still common MSM8916 (Snapdragon 410) phone chip that has been
   supported for a long time.
 
 * Qualcomm SC8180x (Snapdragon 8cx) is one of their earlier high-end
   laptop chips, used in the Lenovo Flex 5G, which is added along with
   the reference board.
 
 * Qualcomm SDX75 is the latest generation modem chip that is used
   as a peripherial in phones but can also run a standalone Linux.  Unlike
   the prior 32-bit SDX65 and SDX55, this now has a 64-bit Cortex-A55.
 
 * Alibaba T-Head TH1520 is a quad-core RISC-V chip based on the Xuantie
   C910 core, a step up from all previously added rv64 chips.
 
 All of the above come with reference board implementations, those included
 there are 39 new board files, but only five more 32-bit this time, probably
 a new low:
 
 * Marantec Maveo board based on dhcor imx6ull module
 
 * Endian 4i Edge 200, based on the armv5 Marvell Kirkwood chip
 
 * Epson Moverio BT-200 AR glasses based on TI OMAP4
 
 * PHYTEC STM32MP1-3 Dev board based on STM32MP15 PHYTEC SOM
 
 * ICnova ADB4006 board based on Allwinner A20
 
 On the 64-bit side, there are also fewer addded machines than
 we had in the recent releases:
 
 * Three boards based on NXP i.MX8: Emtop SoM & Baseboard,
   NXP i.MX8MM EVKB board and i.MX8MP based Gateworks Venice
   gw7905-2x device.
 
 * NVIDIA IGX Orin and Jetson Orin Nano boards, both based on
   tegra234
 
 * Qualcomm gains support for 6 reference boards on various members
   of their IPQ networking SoC series, as well as the Sony Xperia M4
   Aqua phone, the Acer Aspire 1 laptop, and the Fxtec Pro1X board
   on top of the various reference platforms for their new chips.
 
 * Rockchips support for several newer boards: Indiedroid Nova (rk3588),
   Edgeble Neural Compute Module 6B (rk3588), FriendlyARM NanoPi R2C
   Plus (rk3328), Anbernic RG353PS (rk3566), Lunzn Fastrhino R66S/R68S
   (rk3568)
 
 * TI K3/AM625 based PHYTEC phyBOARD-Lyra-AM625 board and Toradex Verdin
   family with AM62 COM, carrier and dev boards
 
 Other changes to existing boards contain the usual minor improvements
 along with
 
 * continued updates to clean up dts files based on dtc warnings and
   binding checks, in particular cache properties and node names
 
 * support for devicetree overlays on at91, bcm283x
 
 * significant additions to existing SoC support on mediatek, qualcomm,
   ti k3 family, starfive jh71xx, NXP i.MX6 and i.MX8, ST STM32MP1
 
 As usual, a lot more detail is available in the individual merge
 commits.
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Merge tag 'soc-dt-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC devicetree updates from Arnd Bergmann:
 "The biggest change this time is for the 32-bit devicetree files, which
  are all moved to a new location, using separate subdirectories for
  each SoC vendor, following the same scheme that is used on arm64, mips
  and riscv. This has been discussed for many years, but so far we never
  did this as there was a plan to move the files out of the kernel
  entirely, which has never happened.

  The impact of this will be that all external patches no longer apply,
  and anything depending on the location of the dtb files in the build
  directory will have to change. The installed files after 'make
  dtbs_install' keep the current location.

  There are six added SoCs here that are largely variants of previously
  added chips. Two other chips are added in a separate branch along with
  their device drivers.

   - The Samsung Exynos 4212 makes its return after the Samsung Galaxy
     Express phone is addded at last. The SoC support was originally
     added in 2012 but removed again in 2017 as it was unused at the
     time.

   - Amlogic C3 is a Cortex-A35 based smart IP camera chip

   - Qualcomm MSM8939 (Snapdragon 615) is a more featureful variant of
     the still common MSM8916 (Snapdragon 410) phone chip that has been
     supported for a long time.

   - Qualcomm SC8180x (Snapdragon 8cx) is one of their earlier high-end
     laptop chips, used in the Lenovo Flex 5G, which is added along with
     the reference board.

   - Qualcomm SDX75 is the latest generation modem chip that is used as
     a peripherial in phones but can also run a standalone Linux. Unlike
     the prior 32-bit SDX65 and SDX55, this now has a 64-bit Cortex-A55.

   - Alibaba T-Head TH1520 is a quad-core RISC-V chip based on the
     Xuantie C910 core, a step up from all previously added rv64 chips.

  All of the above come with reference board implementations, those
  included there are 39 new board files, but only five more 32-bit this
  time, probably a new low:

   - Marantec Maveo board based on dhcor imx6ull module

   - Endian 4i Edge 200, based on the armv5 Marvell Kirkwood chip

   - Epson Moverio BT-200 AR glasses based on TI OMAP4

   - PHYTEC STM32MP1-3 Dev board based on STM32MP15 PHYTEC SOM

   - ICnova ADB4006 board based on Allwinner A20

  On the 64-bit side, there are also fewer addded machines than we had
  in the recent releases:

   - Three boards based on NXP i.MX8: Emtop SoM & Baseboard, NXP i.MX8MM
     EVKB board and i.MX8MP based Gateworks Venice gw7905-2x device.

   - NVIDIA IGX Orin and Jetson Orin Nano boards, both based on tegra234

   - Qualcomm gains support for 6 reference boards on various members of
     their IPQ networking SoC series, as well as the Sony Xperia M4 Aqua
     phone, the Acer Aspire 1 laptop, and the Fxtec Pro1X board on top
     of the various reference platforms for their new chips.

   - Rockchips support for several newer boards: Indiedroid Nova
     (rk3588), Edgeble Neural Compute Module 6B (rk3588), FriendlyARM
     NanoPi R2C Plus (rk3328), Anbernic RG353PS (rk3566), Lunzn
     Fastrhino R66S/R68S (rk3568)

   - TI K3/AM625 based PHYTEC phyBOARD-Lyra-AM625 board and Toradex
     Verdin family with AM62 COM, carrier and dev boards

  Other changes to existing boards contain the usual minor improvements
  along with

   - continued updates to clean up dts files based on dtc warnings and
     binding checks, in particular cache properties and node names

   - support for devicetree overlays on at91, bcm283x

   - significant additions to existing SoC support on mediatek,
     qualcomm, ti k3 family, starfive jh71xx, NXP i.MX6 and i.MX8, ST
     STM32MP1

  As usual, a lot more detail is available in the individual merge
  commits"

* tag 'soc-dt-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (926 commits)
  ARM: mvebu: fix unit address on armada-390-db flash
  ARM: dts: Move .dts files to vendor sub-directories
  kbuild: Support flat DTBs install
  ARM: dts: Add .dts files missing from the build
  ARM: dts: allwinner: Use quoted #include
  ARM: dts: lan966x: kontron-d10: add PHY interrupts
  ARM: dts: lan966x: kontron-d10: fix SPI CS
  ARM: dts: lan966x: kontron-d10: fix board reset
  ARM: dts: at91: Enable device-tree overlay support for AT91 boards
  arm: dts: Enable device-tree overlay support for AT91 boards
  arm64: dts: exynos: Remove clock from Exynos850 pmu_system_controller
  ARM: dts: at91: use generic name for shutdown controller
  ARM: dts: BCM5301X: Add cells sizes to PCIe nodes
  dt-bindings: firmware: brcm,kona-smc: convert to YAML
  riscv: dts: sort makefile entries by directory
  riscv: defconfig: enable T-HEAD SoC
  MAINTAINERS: add entry for T-HEAD RISC-V SoC
  riscv: dts: thead: add sipeed Lichee Pi 4A board device tree
  riscv: dts: add initial T-HEAD TH1520 SoC device tree
  riscv: Add the T-HEAD SoC family Kconfig option
  ...
 2023-06-29 15:07:06 -07:00
WANG Xuerui
65eea6b44a Makefile: Add loongarch target flag for Clang compilation 
The LoongArch kernel is 64-bit and built with the soft-float ABI,
hence the loongarch64-linux-gnusf target. (The "libc" part can affect
the codegen of libcalls: other arches do not use a bare-metal target,
and currently the only fully supported libc on LoongArch is glibc
anyway.)

See: https://lore.kernel.org/loongarch/CAKwvOdnimxv8oJ4mVY74zqtt1x7KTMrWvn2_T9x22SFDbU6rHQ@mail.gmail.com/
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: WANG Xuerui <git@xen0n.name>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
 2023-06-29 20:58:43 +08:00
Linus Torvalds
3a8a670eee Networking changes for 6.5. 
Core
 ----
 
  - Rework the sendpage & splice implementations. Instead of feeding
    data into sockets page by page extend sendmsg handlers to support
    taking a reference on the data, controlled by a new flag called
    MSG_SPLICE_PAGES. Rework the handling of unexpected-end-of-file
    to invoke an additional callback instead of trying to predict what
    the right combination of MORE/NOTLAST flags is.
    Remove the MSG_SENDPAGE_NOTLAST flag completely.
 
  - Implement SCM_PIDFD, a new type of CMSG type analogous to
    SCM_CREDENTIALS, but it contains pidfd instead of plain pid.
 
  - Enable socket busy polling with CONFIG_RT.
 
  - Improve reliability and efficiency of reporting for ref_tracker.
 
  - Auto-generate a user space C library for various Netlink families.
 
 Protocols
 ---------
 
  - Allow TCP to shrink the advertised window when necessary, prevent
    sk_rcvbuf auto-tuning from growing the window all the way up to
    tcp_rmem[2].
 
  - Use per-VMA locking for "page-flipping" TCP receive zerocopy.
 
  - Prepare TCP for device-to-device data transfers, by making sure
    that payloads are always attached to skbs as page frags.
 
  - Make the backoff time for the first N TCP SYN retransmissions
    linear. Exponential backoff is unnecessarily conservative.
 
  - Create a new MPTCP getsockopt to retrieve all info (MPTCP_FULL_INFO).
 
  - Avoid waking up applications using TLS sockets until we have
    a full record.
 
  - Allow using kernel memory for protocol ioctl callbacks, paving
    the way to issuing ioctls over io_uring.
 
  - Add nolocalbypass option to VxLAN, forcing packets to be fully
    encapsulated even if they are destined for a local IP address.
 
  - Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
    in-kernel ECMP implementation (e.g. Open vSwitch) select the same
    link for all packets. Support L4 symmetric hashing in Open vSwitch.
 
  - PPPoE: make number of hash bits configurable.
 
  - Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
    (ipconfig).
 
  - Add layer 2 miss indication and filtering, allowing higher layers
    (e.g. ACL filters) to make forwarding decisions based on whether
    packet matched forwarding state in lower devices (bridge).
 
  - Support matching on Connectivity Fault Management (CFM) packets.
 
  - Hide the "link becomes ready" IPv6 messages by demoting their
    printk level to debug.
 
  - HSR: don't enable promiscuous mode if device offloads the proto.
 
  - Support active scanning in IEEE 802.15.4.
 
  - Continue work on Multi-Link Operation for WiFi 7.
 
 BPF
 ---
 
  - Add precision propagation for subprogs and callbacks. This allows
    maintaining verification efficiency when subprograms are used,
    or in fact passing the verifier at all for complex programs,
    especially those using open-coded iterators.
 
  - Improve BPF's {g,s}setsockopt() length handling. Previously BPF
    assumed the length is always equal to the amount of written data.
    But some protos allow passing a NULL buffer to discover what
    the output buffer *should* be, without writing anything.
 
  - Accept dynptr memory as memory arguments passed to helpers.
 
  - Add routing table ID to bpf_fib_lookup BPF helper.
 
  - Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands.
 
  - Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
    maps as read-only).
 
  - Show target_{obj,btf}_id in tracing link fdinfo.
 
  - Addition of several new kfuncs (most of the names are self-explanatory):
    - Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
      bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
      and bpf_dynptr_clone().
    - bpf_task_under_cgroup()
    - bpf_sock_destroy() - force closing sockets
    - bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs
 
 Netfilter
 ---------
 
  - Relax set/map validation checks in nf_tables. Allow checking
    presence of an entry in a map without using the value.
 
  - Increase ip_vs_conn_tab_bits range for 64BIT builds.
 
  - Allow updating size of a set.
 
  - Improve NAT tuple selection when connection is closing.
 
 Driver API
 ----------
 
  - Integrate netdev with LED subsystem, to allow configuring HW
    "offloaded" blinking of LEDs based on link state and activity
    (i.e. packets coming in and out).
 
  - Support configuring rate selection pins of SFP modules.
 
  - Factor Clause 73 auto-negotiation code out of the drivers, provide
    common helper routines.
 
  - Add more fool-proof helpers for managing lifetime of MDIO devices
    associated with the PCS layer.
 
  - Allow drivers to report advanced statistics related to Time Aware
    scheduler offload (taprio).
 
  - Allow opting out of VF statistics in link dump, to allow more VFs
    to fit into the message.
 
  - Split devlink instance and devlink port operations.
 
 New hardware / drivers
 ----------------------
 
  - Ethernet:
    - Synopsys EMAC4 IP support (stmmac)
    - Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
    - Marvell 88E6250 7 port switches
    - Microchip LAN8650/1 Rev.B0 PHYs
    - MediaTek MT7981/MT7988 built-in 1GE PHY driver
 
  - WiFi:
    - Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
    - Realtek RTL8723DS (SDIO variant)
    - Realtek RTL8851BE
 
  - CAN:
    - Fintek F81604
 
 Drivers
 -------
 
  - Ethernet NICs:
    - Intel (100G, ice):
      - support dynamic interrupt allocation
      - use meta data match instead of VF MAC addr on slow-path
    - nVidia/Mellanox:
      - extend link aggregation to handle 4, rather than just 2 ports
      - spawn sub-functions without any features by default
    - OcteonTX2:
      - support HTB (Tx scheduling/QoS) offload
      - make RSS hash generation configurable
      - support selecting Rx queue using TC filters
    - Wangxun (ngbe/txgbe):
      - add basic Tx/Rx packet offloads
      - add phylink support (SFP/PCS control)
    - Freescale/NXP (enetc):
      - report TAPRIO packet statistics
    - Solarflare/AMD:
      - support matching on IP ToS and UDP source port of outer header
      - VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
      - add devlink dev info support for EF10
 
  - Virtual NICs:
    - Microsoft vNIC:
      - size the Rx indirection table based on requested configuration
      - support VLAN tagging
    - Amazon vNIC:
      - try to reuse Rx buffers if not fully consumed, useful for ARM
        servers running with 16kB pages
    - Google vNIC:
      - support TCP segmentation of >64kB frames
 
  - Ethernet embedded switches:
    - Marvell (mv88e6xxx):
      - enable USXGMII (88E6191X)
    - Microchip:
     - lan966x: add support for Egress Stage 0 ACL engine
     - lan966x: support mapping packet priority to internal switch
       priority (based on PCP or DSCP)
 
  - Ethernet PHYs:
    - Broadcom PHYs:
      - support for Wake-on-LAN for BCM54210E/B50212E
      - report LPI counter
    - Microsemi PHYs: support RGMII delay configuration (VSC85xx)
    - Micrel PHYs: receive timestamp in the frame (LAN8841)
    - Realtek PHYs: support optional external PHY clock
    - Altera TSE PCS: merge the driver into Lynx PCS which it is
      a variant of
 
  - CAN: Kvaser PCIEcan:
    - support packet timestamping
 
  - WiFi:
    - Intel (iwlwifi):
      - major update for new firmware and Multi-Link Operation (MLO)
      - configuration rework to drop test devices and split
        the different families
      - support for segmented PNVM images and power tables
      - new vendor entries for PPAG (platform antenna gain) feature
    - Qualcomm 802.11ax (ath11k):
      - Multiple Basic Service Set Identifier (MBSSID) and
        Enhanced MBSSID Advertisement (EMA) support in AP mode
      - support factory test mode
    - RealTek (rtw89):
      - add RSSI based antenna diversity
      - support U-NII-4 channels on 5 GHz band
    - RealTek (rtl8xxxu):
      - AP mode support for 8188f
      - support USB RX aggregation for the newer chips
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

Pull networking changes from Jakub Kicinski:
 "WiFi 7 and sendpage changes are the biggest pieces of work for this
  release. The latter will definitely require fixes but I think that we
  got it to a reasonable point.

  Core:

   - Rework the sendpage & splice implementations

     Instead of feeding data into sockets page by page extend sendmsg
     handlers to support taking a reference on the data, controlled by a
     new flag called MSG_SPLICE_PAGES

     Rework the handling of unexpected-end-of-file to invoke an
     additional callback instead of trying to predict what the right
     combination of MORE/NOTLAST flags is

     Remove the MSG_SENDPAGE_NOTLAST flag completely

   - Implement SCM_PIDFD, a new type of CMSG type analogous to
     SCM_CREDENTIALS, but it contains pidfd instead of plain pid

   - Enable socket busy polling with CONFIG_RT

   - Improve reliability and efficiency of reporting for ref_tracker

   - Auto-generate a user space C library for various Netlink families

  Protocols:

   - Allow TCP to shrink the advertised window when necessary, prevent
     sk_rcvbuf auto-tuning from growing the window all the way up to
     tcp_rmem[2]

   - Use per-VMA locking for "page-flipping" TCP receive zerocopy

   - Prepare TCP for device-to-device data transfers, by making sure
     that payloads are always attached to skbs as page frags

   - Make the backoff time for the first N TCP SYN retransmissions
     linear. Exponential backoff is unnecessarily conservative

   - Create a new MPTCP getsockopt to retrieve all info
     (MPTCP_FULL_INFO)

   - Avoid waking up applications using TLS sockets until we have a full
     record

   - Allow using kernel memory for protocol ioctl callbacks, paving the
     way to issuing ioctls over io_uring

   - Add nolocalbypass option to VxLAN, forcing packets to be fully
     encapsulated even if they are destined for a local IP address

   - Make TCPv4 use consistent hash in TIME_WAIT and SYN_RECV. Ensure
     in-kernel ECMP implementation (e.g. Open vSwitch) select the same
     link for all packets. Support L4 symmetric hashing in Open vSwitch

   - PPPoE: make number of hash bits configurable

   - Allow DNS to be overwritten by DHCPACK in the in-kernel DHCP client
     (ipconfig)

   - Add layer 2 miss indication and filtering, allowing higher layers
     (e.g. ACL filters) to make forwarding decisions based on whether
     packet matched forwarding state in lower devices (bridge)

   - Support matching on Connectivity Fault Management (CFM) packets

   - Hide the "link becomes ready" IPv6 messages by demoting their
     printk level to debug

   - HSR: don't enable promiscuous mode if device offloads the proto

   - Support active scanning in IEEE 802.15.4

   - Continue work on Multi-Link Operation for WiFi 7

  BPF:

   - Add precision propagation for subprogs and callbacks. This allows
     maintaining verification efficiency when subprograms are used, or
     in fact passing the verifier at all for complex programs,
     especially those using open-coded iterators

   - Improve BPF's {g,s}setsockopt() length handling. Previously BPF
     assumed the length is always equal to the amount of written data.
     But some protos allow passing a NULL buffer to discover what the
     output buffer *should* be, without writing anything

   - Accept dynptr memory as memory arguments passed to helpers

   - Add routing table ID to bpf_fib_lookup BPF helper

   - Support O_PATH FDs in BPF_OBJ_PIN and BPF_OBJ_GET commands

   - Drop bpf_capable() check in BPF_MAP_FREEZE command (used to mark
     maps as read-only)

   - Show target_{obj,btf}_id in tracing link fdinfo

   - Addition of several new kfuncs (most of the names are
     self-explanatory):
      - Add a set of new dynptr kfuncs: bpf_dynptr_adjust(),
        bpf_dynptr_is_null(), bpf_dynptr_is_rdonly(), bpf_dynptr_size()
        and bpf_dynptr_clone().
      - bpf_task_under_cgroup()
      - bpf_sock_destroy() - force closing sockets
      - bpf_cpumask_first_and(), rework bpf_cpumask_any*() kfuncs

  Netfilter:

   - Relax set/map validation checks in nf_tables. Allow checking
     presence of an entry in a map without using the value

   - Increase ip_vs_conn_tab_bits range for 64BIT builds

   - Allow updating size of a set

   - Improve NAT tuple selection when connection is closing

  Driver API:

   - Integrate netdev with LED subsystem, to allow configuring HW
     "offloaded" blinking of LEDs based on link state and activity
     (i.e. packets coming in and out)

   - Support configuring rate selection pins of SFP modules

   - Factor Clause 73 auto-negotiation code out of the drivers, provide
     common helper routines

   - Add more fool-proof helpers for managing lifetime of MDIO devices
     associated with the PCS layer

   - Allow drivers to report advanced statistics related to Time Aware
     scheduler offload (taprio)

   - Allow opting out of VF statistics in link dump, to allow more VFs
     to fit into the message

   - Split devlink instance and devlink port operations

  New hardware / drivers:

   - Ethernet:
      - Synopsys EMAC4 IP support (stmmac)
      - Marvell 88E6361 8 port (5x1GE + 3x2.5GE) switches
      - Marvell 88E6250 7 port switches
      - Microchip LAN8650/1 Rev.B0 PHYs
      - MediaTek MT7981/MT7988 built-in 1GE PHY driver

   - WiFi:
      - Realtek RTL8192FU, 2.4 GHz, b/g/n mode, 2T2R, 300 Mbps
      - Realtek RTL8723DS (SDIO variant)
      - Realtek RTL8851BE

   - CAN:
      - Fintek F81604

  Drivers:

   - Ethernet NICs:
      - Intel (100G, ice):
         - support dynamic interrupt allocation
         - use meta data match instead of VF MAC addr on slow-path
      - nVidia/Mellanox:
         - extend link aggregation to handle 4, rather than just 2 ports
         - spawn sub-functions without any features by default
      - OcteonTX2:
         - support HTB (Tx scheduling/QoS) offload
         - make RSS hash generation configurable
         - support selecting Rx queue using TC filters
      - Wangxun (ngbe/txgbe):
         - add basic Tx/Rx packet offloads
         - add phylink support (SFP/PCS control)
      - Freescale/NXP (enetc):
         - report TAPRIO packet statistics
      - Solarflare/AMD:
         - support matching on IP ToS and UDP source port of outer
           header
         - VxLAN and GENEVE tunnel encapsulation over IPv4 or IPv6
         - add devlink dev info support for EF10

   - Virtual NICs:
      - Microsoft vNIC:
         - size the Rx indirection table based on requested
           configuration
         - support VLAN tagging
      - Amazon vNIC:
         - try to reuse Rx buffers if not fully consumed, useful for ARM
           servers running with 16kB pages
      - Google vNIC:
         - support TCP segmentation of >64kB frames

   - Ethernet embedded switches:
      - Marvell (mv88e6xxx):
         - enable USXGMII (88E6191X)
      - Microchip:
         - lan966x: add support for Egress Stage 0 ACL engine
         - lan966x: support mapping packet priority to internal switch
           priority (based on PCP or DSCP)

   - Ethernet PHYs:
      - Broadcom PHYs:
         - support for Wake-on-LAN for BCM54210E/B50212E
         - report LPI counter
      - Microsemi PHYs: support RGMII delay configuration (VSC85xx)
      - Micrel PHYs: receive timestamp in the frame (LAN8841)
      - Realtek PHYs: support optional external PHY clock
      - Altera TSE PCS: merge the driver into Lynx PCS which it is a
        variant of

   - CAN: Kvaser PCIEcan:
      - support packet timestamping

   - WiFi:
      - Intel (iwlwifi):
         - major update for new firmware and Multi-Link Operation (MLO)
         - configuration rework to drop test devices and split the
           different families
         - support for segmented PNVM images and power tables
         - new vendor entries for PPAG (platform antenna gain) feature
      - Qualcomm 802.11ax (ath11k):
         - Multiple Basic Service Set Identifier (MBSSID) and Enhanced
           MBSSID Advertisement (EMA) support in AP mode
         - support factory test mode
      - RealTek (rtw89):
         - add RSSI based antenna diversity
         - support U-NII-4 channels on 5 GHz band
      - RealTek (rtl8xxxu):
         - AP mode support for 8188f
         - support USB RX aggregation for the newer chips"

* tag 'net-next-6.5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1602 commits)
  net: scm: introduce and use scm_recv_unix helper
  af_unix: Skip SCM_PIDFD if scm->pid is NULL.
  net: lan743x: Simplify comparison
  netlink: Add __sock_i_ino() for __netlink_diag_dump().
  net: dsa: avoid suspicious RCU usage for synced VLAN-aware MAC addresses
  Revert "af_unix: Call scm_recv() only after scm_set_cred()."
  phylink: ReST-ify the phylink_pcs_neg_mode() kdoc
  libceph: Partially revert changes to support MSG_SPLICE_PAGES
  net: phy: mscc: fix packet loss due to RGMII delays
  net: mana: use vmalloc_array and vcalloc
  net: enetc: use vmalloc_array and vcalloc
  ionic: use vmalloc_array and vcalloc
  pds_core: use vmalloc_array and vcalloc
  gve: use vmalloc_array and vcalloc
  octeon_ep: use vmalloc_array and vcalloc
  net: usb: qmi_wwan: add u-blox 0x1312 composition
  perf trace: fix MSG_SPLICE_PAGES build error
  ipvlan: Fix return value of ipvlan_queue_xmit()
  netfilter: nf_tables: fix underflow in chain reference counter
  netfilter: nf_tables: unbind non-anonymous set if rule construction fails
  ...
 2023-06-28 16:43:10 -07:00
Linus Torvalds
6a8cbd9253 v6.5-rc1-sysctl-next 
The changes queued up for v6.5-rc1 for sysctl are in line with
 prior efforts to stop usage of deprecated routines which incur
 recursion and also make it hard to remove the empty array element
 in each sysctl array declaration. The most difficult user to modify
 was parport which required a bit of re-thinking of how to declare shared
 sysctls there, Joel Granados has stepped up to the plate to do most of
 this work and eventual removal of register_sysctl_table(). That work
 ended up saving us about 1465 bytes according to bloat-o-meter. Since
 we gained a few bloat-o-meter karma points I moved two rather small
 sysctl arrays from kernel/sysctl.c leaving us only two more sysctl
 arrays to move left.
 
 Most changes have been tested on linux-next for about a month. The last
 straggler patches are a minor parport fix, changes to the sysctl
 kernel selftest so to verify correctness and prevent regressions for
 the future change he made to provide an alternative solution for the
 special sysctl mount point target which was using the now deprecated
 sysctl child element.
 
 This is all prep work to now finally be able to remove the empty
 array element in all sysctl declarations / registrations which is
 expected to save us a bit of bytes all over the kernel. That work
 will be tested early after v6.5-rc1 is out.
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Merge tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull sysctl updates from Luis Chamberlain:
 "The changes for sysctl are in line with prior efforts to stop usage of
  deprecated routines which incur recursion and also make it hard to
  remove the empty array element in each sysctl array declaration.

  The most difficult user to modify was parport which required a bit of
  re-thinking of how to declare shared sysctls there, Joel Granados has
  stepped up to the plate to do most of this work and eventual removal
  of register_sysctl_table(). That work ended up saving us about 1465
  bytes according to bloat-o-meter. Since we gained a few bloat-o-meter
  karma points I moved two rather small sysctl arrays from
  kernel/sysctl.c leaving us only two more sysctl arrays to move left.

  Most changes have been tested on linux-next for about a month. The
  last straggler patches are a minor parport fix, changes to the sysctl
  kernel selftest so to verify correctness and prevent regressions for
  the future change he made to provide an alternative solution for the
  special sysctl mount point target which was using the now deprecated
  sysctl child element.

  This is all prep work to now finally be able to remove the empty array
  element in all sysctl declarations / registrations which is expected
  to save us a bit of bytes all over the kernel. That work will be
  tested early after v6.5-rc1 is out"

* tag 'v6.5-rc1-sysctl-next' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux:
  sysctl: replace child with an enumeration
  sysctl: Remove debugging dump_stack
  test_sysclt: Test for registering a mount point
  test_sysctl: Add an option to prevent test skip
  test_sysctl: Add an unregister sysctl test
  test_sysctl: Group node sysctl test under one func
  test_sysctl: Fix test metadata getters
  parport: plug a sysctl register leak
  sysctl: move security keys sysctl registration to its own file
  sysctl: move umh sysctl registration to its own file
  signal: move show_unhandled_signals sysctl to its own file
  sysctl: remove empty dev table
  sysctl: Remove register_sysctl_table
  sysctl: Refactor base paths registrations
  sysctl: stop exporting register_sysctl_table
  parport: Removed sysctl related defines
  parport: Remove register_sysctl_table from parport_default_proc_register
  parport: Remove register_sysctl_table from parport_device_proc_register
  parport: Remove register_sysctl_table from parport_proc_register
  parport: Move magic number "15" to a define
 2023-06-28 16:05:21 -07:00
Linus Torvalds
77b1a7f7a0 - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in 
top-level directories.
 
 - Douglas Anderson has added a new "buddy" mode to the hardlockup
   detector.  It permits the detector to work on architectures which
   cannot provide the required interrupts, by having CPUs periodically
   perform checks on other CPUs.
 
 - Zhen Lei has enhanced kexec's ability to support two crash regions.
 
 - Petr Mladek has done a lot of cleanup on the hard lockup detector's
   Kconfig entries.
 
 - And the usual bunch of singleton patches in various places.
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Merge tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-mm updates from Andrew Morton:

 - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in top-level
   directories

 - Douglas Anderson has added a new "buddy" mode to the hardlockup
   detector. It permits the detector to work on architectures which
   cannot provide the required interrupts, by having CPUs periodically
   perform checks on other CPUs

 - Zhen Lei has enhanced kexec's ability to support two crash regions

 - Petr Mladek has done a lot of cleanup on the hard lockup detector's
   Kconfig entries

 - And the usual bunch of singleton patches in various places

* tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (72 commits)
  kernel/time/posix-stubs.c: remove duplicated include
  ocfs2: remove redundant assignment to variable bit_off
  watchdog/hardlockup: fix typo in config HARDLOCKUP_DETECTOR_PREFER_BUDDY
  powerpc: move arch_trigger_cpumask_backtrace from nmi.h to irq.h
  devres: show which resource was invalid in __devm_ioremap_resource()
  watchdog/hardlockup: define HARDLOCKUP_DETECTOR_ARCH
  watchdog/sparc64: define HARDLOCKUP_DETECTOR_SPARC64
  watchdog/hardlockup: make HAVE_NMI_WATCHDOG sparc64-specific
  watchdog/hardlockup: declare arch_touch_nmi_watchdog() only in linux/nmi.h
  watchdog/hardlockup: make the config checks more straightforward
  watchdog/hardlockup: sort hardlockup detector related config values a logical way
  watchdog/hardlockup: move SMP barriers from common code to buddy code
  watchdog/buddy: simplify the dependency for HARDLOCKUP_DETECTOR_PREFER_BUDDY
  watchdog/buddy: don't copy the cpumask in watchdog_next_cpu()
  watchdog/buddy: cleanup how watchdog_buddy_check_hardlockup() is called
  watchdog/hardlockup: remove softlockup comment in touch_nmi_watchdog()
  watchdog/hardlockup: in watchdog_hardlockup_check() use cpumask_copy()
  watchdog/hardlockup: don't use raw_cpu_ptr() in watchdog_hardlockup_kick()
  watchdog/hardlockup: HAVE_NMI_WATCHDOG must implement watchdog_hardlockup_probe()
  watchdog/hardlockup: keep kernel.nmi_watchdog sysctl as 0444 if probe fails
  ...
 2023-06-28 10:59:38 -07:00
Masahiro Yamada
f5983dab0e modpost: define more R_ARM_* for old distributions 
On CentOS 7, the following build error occurs.

scripts/mod/modpost.c: In function 'addend_arm_rel':
scripts/mod/modpost.c:1312:7: error: 'R_ARM_MOVW_ABS_NC' undeclared (first use in this function); did you mean 'R_ARM_THM_ABS5'?
  case R_ARM_MOVW_ABS_NC:
       ^~~~~~~~~~~~~~~~~
       R_ARM_THM_ABS5
scripts/mod/modpost.c:1312:7: note: each undeclared identifier is reported only once for each function it appears in
scripts/mod/modpost.c:1313:7: error: 'R_ARM_MOVT_ABS' undeclared (first use in this function); did you mean 'R_ARM_THM_ABS5'?
  case R_ARM_MOVT_ABS:
       ^~~~~~~~~~~~~~
       R_ARM_THM_ABS5
scripts/mod/modpost.c:1326:7: error: 'R_ARM_THM_MOVW_ABS_NC' undeclared (first use in this function); did you mean 'R_ARM_THM_ABS5'?
  case R_ARM_THM_MOVW_ABS_NC:
       ^~~~~~~~~~~~~~~~~~~~~
       R_ARM_THM_ABS5
scripts/mod/modpost.c:1327:7: error: 'R_ARM_THM_MOVT_ABS' undeclared (first use in this function); did you mean 'R_ARM_THM_ABS5'?
  case R_ARM_THM_MOVT_ABS:
       ^~~~~~~~~~~~~~~~~~
       R_ARM_THM_ABS5

Fixes: 12ca2c67d7 ("modpost: detect section mismatch for R_ARM_{MOVW_ABS_NC,MOVT_ABS}")
Fixes: cd1824fb7a ("modpost: detect section mismatch for R_ARM_THM_{MOVW_ABS_NC,MOVT_ABS}")
Reported-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-06-29 01:36:41 +09:00
Linus Torvalds
582c161cf3 hardening updates for v6.5-rc1 
- Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko)
 
 - Convert strreplace() to return string start (Andy Shevchenko)
 
 - Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook)
 
 - Add missing function prototypes seen with W=1 (Arnd Bergmann)
 
 - Fix strscpy() kerndoc typo (Arne Welzel)
 
 - Replace strlcpy() with strscpy() across many subsystems which were
   either Acked by respective maintainers or were trivial changes that
   went ignored for multiple weeks (Azeem Shaikh)
 
 - Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers)
 
 - Add KUnit tests for strcat()-family
 
 - Enable KUnit tests of FORTIFY wrappers under UML
 
 - Add more complete FORTIFY protections for strlcat()
 
 - Add missed disabling of FORTIFY for all arch purgatories.
 
 - Enable -fstrict-flex-arrays=3 globally
 
 - Tightening UBSAN_BOUNDS when using GCC
 
 - Improve checkpatch to check for strcpy, strncpy, and fake flex arrays
 
 - Improve use of const variables in FORTIFY
 
 - Add requested struct_size_t() helper for types not pointers
 
 - Add __counted_by macro for annotating flexible array size members
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Merge tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull hardening updates from Kees Cook:
 "There are three areas of note:

  A bunch of strlcpy()->strscpy() conversions ended up living in my tree
  since they were either Acked by maintainers for me to carry, or got
  ignored for multiple weeks (and were trivial changes).

  The compiler option '-fstrict-flex-arrays=3' has been enabled
  globally, and has been in -next for the entire devel cycle. This
  changes compiler diagnostics (though mainly just -Warray-bounds which
  is disabled) and potential UBSAN_BOUNDS and FORTIFY _warning_
  coverage. In other words, there are no new restrictions, just
  potentially new warnings. Any new FORTIFY warnings we've seen have
  been fixed (usually in their respective subsystem trees). For more
  details, see commit df8fc4e934.

  The under-development compiler attribute __counted_by has been added
  so that we can start annotating flexible array members with their
  associated structure member that tracks the count of flexible array
  elements at run-time. It is possible (likely?) that the exact syntax
  of the attribute will change before it is finalized, but GCC and Clang
  are working together to sort it out. Any changes can be made to the
  macro while we continue to add annotations.

  As an example of that last case, I have a treewide commit waiting with
  such annotations found via Coccinelle:

    https://git.kernel.org/linus/adc5b3cb48a049563dc673f348eab7b6beba8a9b

  Also see commit dd06e72e68 for more details.

  Summary:

   - Fix KMSAN vs FORTIFY in strlcpy/strlcat (Alexander Potapenko)

   - Convert strreplace() to return string start (Andy Shevchenko)

   - Flexible array conversions (Arnd Bergmann, Wyes Karny, Kees Cook)

   - Add missing function prototypes seen with W=1 (Arnd Bergmann)

   - Fix strscpy() kerndoc typo (Arne Welzel)

   - Replace strlcpy() with strscpy() across many subsystems which were
     either Acked by respective maintainers or were trivial changes that
     went ignored for multiple weeks (Azeem Shaikh)

   - Remove unneeded cc-option test for UBSAN_TRAP (Nick Desaulniers)

   - Add KUnit tests for strcat()-family

   - Enable KUnit tests of FORTIFY wrappers under UML

   - Add more complete FORTIFY protections for strlcat()

   - Add missed disabling of FORTIFY for all arch purgatories.

   - Enable -fstrict-flex-arrays=3 globally

   - Tightening UBSAN_BOUNDS when using GCC

   - Improve checkpatch to check for strcpy, strncpy, and fake flex
     arrays

   - Improve use of const variables in FORTIFY

   - Add requested struct_size_t() helper for types not pointers

   - Add __counted_by macro for annotating flexible array size members"

* tag 'hardening-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (54 commits)
  netfilter: ipset: Replace strlcpy with strscpy
  uml: Replace strlcpy with strscpy
  um: Use HOST_DIR for mrproper
  kallsyms: Replace all non-returning strlcpy with strscpy
  sh: Replace all non-returning strlcpy with strscpy
  of/flattree: Replace all non-returning strlcpy with strscpy
  sparc64: Replace all non-returning strlcpy with strscpy
  Hexagon: Replace all non-returning strlcpy with strscpy
  kobject: Use return value of strreplace()
  lib/string_helpers: Change returned value of the strreplace()
  jbd2: Avoid printing outside the boundary of the buffer
  checkpatch: Check for 0-length and 1-element arrays
  riscv/purgatory: Do not use fortified string functions
  s390/purgatory: Do not use fortified string functions
  x86/purgatory: Do not use fortified string functions
  acpi: Replace struct acpi_table_slit 1-element array with flex-array
  clocksource: Replace all non-returning strlcpy with strscpy
  string: use __builtin_memcpy() in strlcpy/strlcat
  staging: most: Replace all non-returning strlcpy with strscpy
  drm/i2c: tda998x: Replace all non-returning strlcpy with strscpy
  ...
 2023-06-27 21:24:18 -07:00
Linus Torvalds
bc6cb4d5bc Locking changes for v6.5: 
- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double().
 
   The cmpxchg128() family of functions is basically & functionally
   the same as cmpxchg_double(), but with a saner interface: instead
   of a 6-parameter horror that forced u128 - u64/u64-halves layout
   details on the interface and exposed users to complexity,
   fragility & bugs, use a natural 3-parameter interface with u128 types.
 
 - Restructure the generated atomic headers, and add
   kerneldoc comments for all of the generic atomic{,64,_long}_t
   operations. Generated definitions are much cleaner now,
   and come with documentation.
 
 - Implement lock_set_cmp_fn() on lockdep, for defining an ordering
   when taking multiple locks of the same type. This gets rid of
   one use of lockdep_set_novalidate_class() in the bcache code.
 
 - Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended
   variable shadowing generating garbage code on Clang on certain
   ARM builds.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:

 - Introduce cmpxchg128() -- aka. the demise of cmpxchg_double()

   The cmpxchg128() family of functions is basically & functionally the
   same as cmpxchg_double(), but with a saner interface.

   Instead of a 6-parameter horror that forced u128 - u64/u64-halves
   layout details on the interface and exposed users to complexity,
   fragility & bugs, use a natural 3-parameter interface with u128
   types.

 - Restructure the generated atomic headers, and add kerneldoc comments
   for all of the generic atomic{,64,_long}_t operations.

   The generated definitions are much cleaner now, and come with
   documentation.

 - Implement lock_set_cmp_fn() on lockdep, for defining an ordering when
   taking multiple locks of the same type.

   This gets rid of one use of lockdep_set_novalidate_class() in the
   bcache code.

 - Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended variable
   shadowing generating garbage code on Clang on certain ARM builds.

* tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
  locking/atomic: scripts: fix ${atomic}_dec_if_positive() kerneldoc
  percpu: Fix self-assignment of __old in raw_cpu_generic_try_cmpxchg()
  locking/atomic: treewide: delete arch_atomic_*() kerneldoc
  locking/atomic: docs: Add atomic operations to the driver basic API documentation
  locking/atomic: scripts: generate kerneldoc comments
  docs: scripts: kernel-doc: accept bitwise negation like ~@var
  locking/atomic: scripts: simplify raw_atomic*() definitions
  locking/atomic: scripts: simplify raw_atomic_long*() definitions
  locking/atomic: scripts: split pfx/name/sfx/order
  locking/atomic: scripts: restructure fallback ifdeffery
  locking/atomic: scripts: build raw_atomic_long*() directly
  locking/atomic: treewide: use raw_atomic*_<op>()
  locking/atomic: scripts: add trivial raw_atomic*_<op>()
  locking/atomic: scripts: factor out order template generation
  locking/atomic: scripts: remove leftover "${mult}"
  locking/atomic: scripts: remove bogus order parameter
  locking/atomic: xtensa: add preprocessor symbols
  locking/atomic: x86: add preprocessor symbols
  locking/atomic: sparc: add preprocessor symbols
  locking/atomic: sh: add preprocessor symbols
  ...
 2023-06-27 14:14:30 -07:00
Masahiro Yamada
54a11654de powerpc: remove checks for binutils older than 2.25 
Commit e441273947 ("Documentation: raise minimum supported version of
binutils to 2.25") allows us to remove the checks for old binutils.

There is no more user for ld-ifversion. Remove it as well.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20230119082250.151485-1-masahiroy@kernel.org
 2023-06-27 16:59:29 +10:00
Pierre-Clément Tosi
71025b8565 scripts/mksysmap: Ignore prefixed KCFI symbols 
The (relatively) new KCFI feature in LLVM/Clang encodes type information
for C functions by generating symbols named __kcfi_typeid_<fname>, which
can then be referenced from assembly. However, some custom build rules
(e.g. nVHE or early PIE on arm64) use objcopy to add a prefix to all the
symbols in their object files, making mksysmap's ignore filter miss
those KCFI symbols.

Therefore, explicitly list those twice-prefixed KCFI symbols as ignored.

Alternatively, this could also be achieved in a less verbose way by
ignoring any symbol containing the string "__kcfi_typeid_". However,
listing the combined prefixes explicitly saves us from running the small
risk of ignoring symbols that should be kept.

Signed-off-by: Pierre-Clément Tosi <ptosi@google.com>
Reviewed-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-06-27 08:35:43 +09:00
Masahiro Yamada
1240dabe8d kbuild: deb-pkg: remove the CONFIG_MODULES check in buildeb 
When CONFIG_MODULES is disabled for ARCH=um, 'make (bin)deb-pkg' fails
with an error like follows:

  cp: cannot create regular file 'debian/linux-image/usr/lib/uml/modules/6.4.0-rc2+/System.map': No such file or directory

Remove the CONFIG_MODULES check completely so ${pdir}/usr/lib/uml/modules
will always be created and modules.builtin.(modinfo) will be installed
under it for ARCH=um.

Fixes: b611daae5e ("kbuild: deb-pkg: split image and debug objects staging out into functions")
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-06-27 08:31:27 +09:00
Josh Triplett
4243afdb93 kbuild: builddeb: always make modules_install, to install modules.builtin* 
Even for a non-modular kernel, the kernel builds modules.builtin and
modules.builtin.modinfo, with information about the built-in modules.
Tools such as initramfs-tools need these files to build a working
initramfs on some systems, such as those requiring firmware.

Now that `make modules_install` works even in non-modular kernels and
installs these files, unconditionally invoke it when building a Debian
package.

Signed-off-by: Josh Triplett <josh@joshtriplett.org>
Reviewed-by: Nicolas Schier <nicolas@fjasle.eu>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-06-27 08:31:26 +09:00
Linus Torvalds
a1257b5e3b Rust changes for v6.5 
A fairly small one in terms of feature additions. Most of the changes in
 terms of lines come from the upgrade to the new version of the toolchain
 (which in turn is big due to the vendored 'alloc' crate).
 
  - Upgrade to Rust 1.68.2:
 
    This is the first such upgrade, and we will try to update it often
    from now on, in order to remain close to the latest release, until
    a minimum version (which is "in the future") can be established.
 
    The upgrade brings the stabilization of 4 features we used (and 2
    more that we used in our old 'rust' branch).
 
    Commit 3ed03f4da0 ("rust: upgrade to Rust 1.68.2") contains the
    details and rationale.
 
  - pin-init API:
 
    Several internal improvements and fixes to the pin-init API, e.g.
    allowing to use 'Self' in a struct definition with '#[pin_data]'.
 
  - 'error'  module:
 
    New 'name()' method for the 'Error' type (with 'errname()'
    integration), used to implement the 'Debug' trait for 'Error'.
 
    Add error codes from 'include/linux/errno.h' to the list of Rust
    'Error' constants.
 
    Allow specifying error type on the 'Result' type (with the default
    still being our usual 'Error' type).
 
  - 'str' module:
 
    'TryFrom' implementation for 'CStr', and new 'to_cstring()' method
    based on it.
 
  - 'sync' module:
 
    Implement 'AsRef' trait for 'Arc', allowing to use 'Arc' in code that
    is generic over smart pointer types.
 
    Add 'ptr_eq' method to 'Arc' for easier, less error prone comparison
    between two 'Arc' pointers.
 
    Reword the 'Send' safety comment for 'Arc', and avoid referencing it
    from the 'Sync' one.
 
  - 'task' module:
 
    Implement 'Send' marker for 'Task'.
 
  - 'types' module:
 
    Implement 'Send' and 'Sync' markers for 'ARef<T>' when 'T' is
    'AlwaysRefCounted', 'Send' and 'Sync'.
 
  - Other changes:
 
    Documentation improvements and '.gitattributes' change to start
    using the Rust diff driver.
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Merge tag 'rust-6.5' of https://github.com/Rust-for-Linux/linux

Pull rust updates from Miguel Ojeda:
 "A fairly small one in terms of feature additions. Most of the changes
  in terms of lines come from the upgrade to the new version of the
  toolchain (which in turn is big due to the vendored 'alloc' crate).

  Upgrade to Rust 1.68.2:

   - This is the first such upgrade, and we will try to update it often
     from now on, in order to remain close to the latest release, until
     a minimum version (which is "in the future") can be established.

     The upgrade brings the stabilization of 4 features we used (and 2
     more that we used in our old 'rust' branch).

     Commit 3ed03f4da0 ("rust: upgrade to Rust 1.68.2") contains the
     details and rationale.

  pin-init API:

   - Several internal improvements and fixes to the pin-init API, e.g.
     allowing to use 'Self' in a struct definition with '#[pin_data]'.

  'error' module:

   - New 'name()' method for the 'Error' type (with 'errname()'
     integration), used to implement the 'Debug' trait for 'Error'.

   - Add error codes from 'include/linux/errno.h' to the list of Rust
     'Error' constants.

   - Allow specifying error type on the 'Result' type (with the default
     still being our usual 'Error' type).

  'str' module:

   - 'TryFrom' implementation for 'CStr', and new 'to_cstring()' method
     based on it.

  'sync' module:

   - Implement 'AsRef' trait for 'Arc', allowing to use 'Arc' in code
     that is generic over smart pointer types.

   - Add 'ptr_eq' method to 'Arc' for easier, less error prone
     comparison between two 'Arc' pointers.

   - Reword the 'Send' safety comment for 'Arc', and avoid referencing
     it from the 'Sync' one.

  'task' module:

   - Implement 'Send' marker for 'Task'.

  'types' module:

   - Implement 'Send' and 'Sync' markers for 'ARef<T>' when 'T' is
     'AlwaysRefCounted', 'Send' and 'Sync'.

  Other changes:

   - Documentation improvements and '.gitattributes' change to start
     using the Rust diff driver"

* tag 'rust-6.5' of https://github.com/Rust-for-Linux/linux:
  rust: error: `impl Debug` for `Error` with `errname()` integration
  rust: task: add `Send` marker to `Task`
  rust: specify when `ARef` is thread safe
  rust: sync: reword the `Arc` safety comment for `Sync`
  rust: sync: reword the `Arc` safety comment for `Send`
  rust: sync: implement `AsRef<T>` for `Arc<T>`
  rust: sync: add `Arc::ptr_eq`
  rust: error: add missing error codes
  rust: str: add conversion from `CStr` to `CString`
  rust: error: allow specifying error type on `Result`
  rust: init: update macro expansion example in docs
  rust: macros: replace Self with the concrete type in #[pin_data]
  rust: macros: refactor generics parsing of `#[pin_data]` into its own function
  rust: macros: fix usage of `#[allow]` in `quote!`
  docs: rust: point directly to the standalone installers
  .gitattributes: set diff driver for Rust source code files
  rust: upgrade to Rust 1.68.2
  rust: arc: fix intra-doc link in `Arc<T>::init`
  rust: alloc: clarify what is the upstream version
 2023-06-26 09:35:50 -07:00
Peter Zijlstra
54da6a0924 locking: Introduce __cleanup() based infrastructure 
Use __attribute__((__cleanup__(func))) to build:

 - simple auto-release pointers using __free()

 - 'classes' with constructor and destructor semantics for
   scope-based resource management.

 - lock guards based on the above classes.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20230612093537.614161713%40infradead.org
 2023-06-26 11:14:18 +02:00
Linus Torvalds
300edd751b - Add a ORC format hash to vmlinux and modules in order for other tools 
which use it, to detect changes to it and adapt accordingly
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Merge tag 'objtool_urgent_for_v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool fix from Borislav Petkov:

 - Add a ORC format hash to vmlinux and modules in order for other tools
   which use it, to detect changes to it and adapt accordingly

* tag 'objtool_urgent_for_v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/unwind/orc: Add ELF section with ORC version identifier
 2023-06-25 10:00:17 -07:00
Masahiro Yamada
8e86ebefdd modpost: continue even with unknown relocation type 
Currently, unknown relocation types are just skipped.

The value of r_addend is only needed to get the symbol name in case
is_valid_name(elf, sym) returns false.

Even if we do not know how to calculate r_addend, we should continue.
At worst, we will get "(unknown)" as the symbol name, but it is better
than failing to detect section mismatches.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-06-25 23:12:20 +09:00
Masahiro Yamada
8aa00e2c3d modpost: factor out Elf_Sym pointer calculation to section_rel() 
Pass the Elf_Sym pointer to addend_arm_rel() as well as to
check_section_mismatch().

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
 2023-06-25 23:12:20 +09:00
Masahiro Yamada
b31db651f7 modpost: factor out inst location calculation to section_rel() 
All the addend_*_rel() functions calculate the instruction location in
the same way.

Factor out the similar code to the caller. Squash reloc_location() too.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-06-25 23:12:20 +09:00
Sami Tolvanen
25a21fbb93 kbuild: Disable GCOV for *.mod.o 
With GCOV_PROFILE_ALL, Clang injects __llvm_gcov_* functions to each
object file, including the *.mod.o. As we filter out CC_FLAGS_CFI
for *.mod.o, the compiler won't generate type hashes for the
injected functions, and therefore indirectly calling them during
module loading trips indirect call checking.

Enabling CFI for *.mod.o isn't sufficient to fix this issue after
commit 0c3e806ec0 ("x86/cfi: Add boot time hash randomization"),
as *.mod.o aren't processed by objtool, which means any hashes
emitted there won't be randomized. Therefore, in addition to
disabling CFI for *.mod.o, also disable GCOV, as the object files
don't otherwise contain any executable code.

Fixes: cf68fffb66 ("add support for Clang CFI")
Reported-by: Joe Fradley <joefradley@google.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-06-25 23:12:20 +09:00
Sami Tolvanen
ddf56288ee kbuild: Fix CFI failures with GCOV 
With GCOV_PROFILE_ALL, Clang injects __llvm_gcov_* functions to
each object file, and the functions are indirectly called during
boot. However, when code is injected to object files that are not
part of vmlinux.o, it's also not processed by objtool, which breaks
CFI hash randomization as the hashes in these files won't be
included in the .cfi_sites section and thus won't be randomized.

Similarly to commit 42633ed852 ("kbuild: Fix CFI hash
randomization with KASAN"), disable GCOV for .vmlinux.export.o and
init/version-timestamp.o to avoid emitting unnecessary functions to
object files that don't otherwise have executable code.

Fixes: 0c3e806ec0 ("x86/cfi: Add boot time hash randomization")
Reported-by: Joe Fradley <joefradley@google.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
 2023-06-25 23:12:20 +09:00