Linus Torvalds [Tue, 4 Oct 2022 03:01:40 +0000 (20:01 -0700)]
Merge tag 'erofs-for-6.1-rc1' of git://git./linux/kernel/git/xiang/erofs
Pull erofs updates from Gao Xiang:
"In this cycle, for container use cases, fscache-based shared domain is
introduced [1] so that data blobs in the same domain will be storage
deduplicated and it will also be used for page cache sharing later.
Also, a special packed inode is now introduced to record inode
fragments which keep the tail part of files by Yue Hu [2]. You can
keep arbitary length or (at will) the whole file as a fragment and
then fragments can be optionally compressed in the packed inode
together and even deduplicated for smaller image sizes.
In addition to that, global compressed data deduplication by sharing
partial-referenced pclusters is also supported in this cycle.
Summary:
- Introduce fscache-based domain to share blobs between images
- Support recording fragments in a special packed inode
- Support partial-referenced pclusters for global compressed data
deduplication
- Fix an order >= MAX_ORDER warning due to crafted negative i_size
- Several cleanups"
Link: https://lore.kernel.org/r/20220916085940.89392-1-zhujia.zj@bytedance.com
Link: https://lore.kernel.org/r/cover.1663065968.git.huyue2@coolpad.com
* tag 'erofs-for-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: clean up erofs_iget()
erofs: clean up unnecessary code and comments
erofs: fold in z_erofs_reload_indexes()
erofs: introduce partial-referenced pclusters
erofs: support on-disk compressed fragments data
erofs: support interlaced uncompressed data for compressed files
erofs: clean up .read_folio() and .readahead() in fscache mode
erofs: introduce 'domain_id' mount option
erofs: Support sharing cookies in the same domain
erofs: introduce a pseudo mnt to manage shared cookies
erofs: introduce fscache-based domain
erofs: code clean up for fscache
erofs: use kill_anon_super() to kill super in fscache mode
erofs: fix order >= MAX_ORDER warning due to crafted negative i_size
Linus Torvalds [Tue, 4 Oct 2022 02:54:29 +0000 (19:54 -0700)]
Merge tag 'fs.vfsuid.fat.v6.1' of git://git./linux/kernel/git/vfs/idmapping
Pull fatfs vfsuid conversion from Christian Brauner:
"Last cycle we introduced the new vfs{g,u}id_t types that we had agreed
on. The most important parts of the vfs have been converted but there
are a few more places we need to switch before we can remove the old
helpers completely.
This cycle we converted all filesystems that called idmapped mount
helpers directly. The affected filesystems are f2fs, fat, fuse, ksmbd,
overlayfs, and xfs. We've sent patches for all of them. Looking at
-next f2fs, ksmbd, overlayfs, and xfs have all picked up these patches
and they should land in mainline during the v6.1 merge window.
So all filesystems that have a separate tree should send the vfsuid
conversion themselves. Onle the fat conversion is going through this
generic fs trees because there is no fat tree.
In order to change time settings on an inode fat checks that the
caller either is the owner of the inode or the inode's group is in the
caller's group list. If fat is on an idmapped mount we compare whether
the inode mapped into the mount is equivalent to the caller's fsuid.
If it isn't we compare whether the inode's group mapped into the mount
is in the caller's group list.
We now use the new vfsuid based helpers for that"
* tag 'fs.vfsuid.fat.v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping:
fat: port to vfs{g,u}id_t and associated helpers
Linus Torvalds [Tue, 4 Oct 2022 02:48:54 +0000 (19:48 -0700)]
Merge tag 'fs.acl.rework.prep.v6.1' of git://git./linux/kernel/git/vfs/idmapping
Pull vfs acl updates from Christian Brauner:
"These are general fixes and preparatory changes related to the ongoing
posix acl rework. The actual rework where we build a type safe posix
acl api wasn't ready for this merge window but we're hopeful for the
next merge window.
General fixes:
- Some filesystems like 9p and cifs have to implement custom posix
acl handlers because they require access to the dentry in order to
set and get posix acls while the set and get inode operations
currently don't. But the ntfs3 filesystem has no such requirement
and thus implemented custom posix acl xattr handlers when it really
didn't have to. So this pr contains patch that just implements set
and get inode operations for ntfs3 and switches it to rely on the
generic posix acl xattr handlers. (We would've appreciated reviews
from the ntfs3 maintainers but we didn't get any. But hey, if we
really broke it we'll fix it. But fstests for ntfs3 said it's
fine.)
- The posix_acl_fix_xattr_common() helper has been adapted so it can
be used by a few more callers and avoiding open-coding the same
checks over and over.
Other than the two general fixes this series introduces a new helper
vfs_set_acl_prepare(). The reason for this helper is so that we can
mitigate one of the source that change {g,u}id values directly in the
uapi struct. With the vfs_set_acl_prepare() helper we can move the
idmapped mount fixup into the generic posix acl set handler.
The advantage of this is that it allows us to remove the
posix_acl_setxattr_idmapped_mnt() helper which so far we had to call
in vfs_setxattr() to account for idmapped mounts. While semantically
correct the problem with this approach was that we had to keep the
value parameter of the generic vfs_setxattr() call as non-const. This
is rectified in this series.
Ultimately, we will get rid of all the extreme kludges and type
unsafety once we have merged the posix api - hopefully during the next
merge window - built solely around get and set inode operations. Which
incidentally will also improve handling of posix acls in security and
especially in integrity modesl. While this will come with temporarily
having two inode operation for posix acls that is nothing compared to
the problems we have right now and so well worth it. We'll end up with
something that we can actually reason about instead of needing to
write novels to explain what's going on"
* tag 'fs.acl.rework.prep.v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/idmapping:
xattr: always us is_posix_acl_xattr() helper
acl: fix the comments of posix_acl_xattr_set
xattr: constify value argument in vfs_setxattr()
ovl: use vfs_set_acl_prepare()
acl: move idmapping handling into posix_acl_xattr_set()
acl: add vfs_set_acl_prepare()
acl: return EOPNOTSUPP in posix_acl_fix_xattr_common()
ntfs3: rework xattr handlers and switch to POSIX ACL VFS helpers
Linus Torvalds [Tue, 4 Oct 2022 01:03:58 +0000 (18:03 -0700)]
Merge tag 'pull-fixes' of git://git./linux/kernel/git/viro/vfs
Pull coredump fix from Al Viro:
"Brown paper bag bug fix for the coredumping fix late in the 6.0
release cycle"
* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
[brown paperbag] fix coredump breakage
Linus Torvalds [Tue, 4 Oct 2022 00:51:52 +0000 (17:51 -0700)]
Merge tag 'lsm-pr-
20221003' of git://git./linux/kernel/git/pcmoore/lsm
Pull LSM updates from Paul Moore:
"Seven patches for the LSM layer and we've got a mix of trivial and
significant patches. Highlights below, starting with the smaller bits
first so they don't get lost in the discussion of the larger items:
- Remove some redundant NULL pointer checks in the common LSM audit
code.
- Ratelimit the lockdown LSM's access denial messages.
With this change there is a chance that the last visible lockdown
message on the console is outdated/old, but it does help preserve
the initial series of lockdown denials that started the denial
message flood and my gut feeling is that these might be the more
valuable messages.
- Open userfaultfds as readonly instead of read/write.
While this code obviously lives outside the LSM, it does have a
noticeable impact on the LSMs with Ondrej explaining the situation
in the commit description. It is worth noting that this patch
languished on the VFS list for over a year without any comments
(objections or otherwise) so I took the liberty of pulling it into
the LSM tree after giving fair notice. It has been in linux-next
since the end of August without any noticeable problems.
- Add a LSM hook for user namespace creation, with implementations
for both the BPF LSM and SELinux.
Even though the changes are fairly small, this is the bulk of the
diffstat as we are also including BPF LSM selftests for the new
hook.
It's also the most contentious of the changes in this pull request
with Eric Biederman NACK'ing the LSM hook multiple times during its
development and discussion upstream. While I've never taken NACK's
lightly, I'm sending these patches to you because it is my belief
that they are of good quality, satisfy a long-standing need of
users and distros, and are in keeping with the existing nature of
the LSM layer and the Linux Kernel as a whole.
The patches in implement a LSM hook for user namespace creation
that allows for a granular approach, configurable at runtime, which
enables both monitoring and control of user namespaces. The general
consensus has been that this is far preferable to the other
solutions that have been adopted downstream including outright
removal from the kernel, disabling via system wide sysctls, or
various other out-of-tree mechanisms that users have been forced to
adopt since we haven't been able to provide them an upstream
solution for their requests. Eric has been steadfast in his
objections to this LSM hook, explaining that any restrictions on
the user namespace could have significant impact on userspace.
While there is the possibility of impacting userspace, it is
important to note that this solution only impacts userspace when it
is requested based on the runtime configuration supplied by the
distro/admin/user. Frederick (the pathset author), the LSM/security
community, and myself have tried to work with Eric during
development of this patchset to find a mutually acceptable
solution, but Eric's approach and unwillingness to engage in a
meaningful way have made this impossible. I have CC'd Eric directly
on this pull request so he has a chance to provide his side of the
story; there have been no objections outside of Eric's"
* tag 'lsm-pr-
20221003' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/lsm:
lockdown: ratelimit denial messages
userfaultfd: open userfaultfds with O_RDONLY
selinux: Implement userns_create hook
selftests/bpf: Add tests verifying bpf lsm userns_create hook
bpf-lsm: Make bpf_lsm_userns_create() sleepable
security, lsm: Introduce security_create_user_ns()
lsm: clean up redundant NULL pointer check
Linus Torvalds [Tue, 4 Oct 2022 00:45:15 +0000 (17:45 -0700)]
Merge tag 'selinux-pr-
20221003' of git://git./linux/kernel/git/pcmoore/selinux
Pull SELinux updates from Paul Moore:
"Six SELinux patches, all are simple and easily understood, but a list
of the highlights is below:
- Use 'grep -E' instead of 'egrep' in the SELinux policy install
script.
Fun fact, this seems to be GregKH's *second* dedicated SELinux
patch since we transitioned to git (ignoring merges, the SPDX
stuff, and a trivial fs reference removal when lustre was yanked);
the first was back in 2011 when selinuxfs was placed in
/sys/fs/selinux. Oh, the memories ...
- Convert the SELinux policy boolean values to use signed integer
types throughout the SELinux kernel code.
Prior to this we were using a mix of signed and unsigned integers
which was probably okay in this particular case, but it is
definitely not a good idea in general.
- Remove a reference to the SELinux runtime disable functionality in
/etc/selinux/config as we are in the process of deprecating that.
See [1] for more background on this if you missed the previous
notes on the deprecation.
- Minor cleanups: remove unneeded variables and function parameter
constification"
Link: https://github.com/SELinuxProject/selinux-kernel/wiki/DEPRECATE-runtime-disable
* tag 'selinux-pr-
20221003' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: remove runtime disable message in the install_policy.sh script
selinux: use "grep -E" instead of "egrep"
selinux: remove the unneeded result variable
selinux: declare read-only parameters const
selinux: use int arrays for boolean values
selinux: remove an unneeded variable in sel_make_class_dir_entries()
Linus Torvalds [Tue, 4 Oct 2022 00:42:12 +0000 (17:42 -0700)]
Merge tag 'integrity-v6.1' of git://git./linux/kernel/git/zohar/linux-integrity
Pull integrity updates from Mimi Zohar:
"Just two bug fixes"
* tag 'integrity-v6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/zohar/linux-integrity:
efi: Correct Macmini DMI match in uefi cert quirk
ima: fix blocking of security.ima xattrs of unsupported algorithms
Linus Torvalds [Tue, 4 Oct 2022 00:38:09 +0000 (17:38 -0700)]
Merge tag 'Smack-for-6.1' of https://github.com/cschaufler/smack-next
Pull smack updates from Casey Schaufler:
"Two minor code clean-ups: one removes constants left over from the old
mount API, while the other gets rid of an unneeded variable.
The other change fixes a flaw in handling IPv6 labeling"
* tag 'Smack-for-6.1' of https://github.com/cschaufler/smack-next:
smack: cleanup obsolete mount option flags
smack: lsm: remove the unneeded result variable
SMACK: Add sk_clone_security LSM hook
Al Viro [Tue, 4 Oct 2022 00:26:08 +0000 (20:26 -0400)]
[brown paperbag] fix coredump breakage
Let me count the ways in which I'd screwed up:
* when emitting a page, handling of gaps in coredump should happen
before fetching the current file position.
* fix for a problem that occurs on rather uncommon setups (and hadn't
been observed in the wild) had been sent very late in the cycle.
* ... with badly insufficient testing, introducing an easily
reproducible breakage. Without giving it time to soak in -next.
Fucked-up-by: Al Viro <viro@zeniv.linux.org.uk>
Reported-by: "J. R. Okajima" <hooanon05g@gmail.com>
Tested-by: "J. R. Okajima" <hooanon05g@gmail.com>
Fixes: 06bbaa6dc53c "[coredump] don't use __kernel_write() on kmap_local_page()"
Cc: stable@kernel.org # v6.0-only
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Linus Torvalds [Tue, 4 Oct 2022 00:24:22 +0000 (17:24 -0700)]
Merge tag 'hardening-v6.1-rc1' of git://git./linux/kernel/git/kees/linux
Pull kernel hardening updates from Kees Cook:
"Most of the collected changes here are fixes across the tree for
various hardening features (details noted below).
The most notable new feature here is the addition of the memcpy()
overflow warning (under CONFIG_FORTIFY_SOURCE), which is the next step
on the path to killing the common class of "trivially detectable"
buffer overflow conditions (i.e. on arrays with sizes known at compile
time) that have resulted in many exploitable vulnerabilities over the
years (e.g. BleedingTooth).
This feature is expected to still have some undiscovered false
positives. It's been in -next for a full development cycle and all the
reported false positives have been fixed in their respective trees.
All the known-bad code patterns we could find with Coccinelle are also
either fixed in their respective trees or in flight.
The commit message in commit
54d9469bc515 ("fortify: Add run-time WARN
for cross-field memcpy()") for the feature has extensive details, but
I'll repeat here that this is a warning _only_, and is not intended to
actually block overflows (yet). The many patches fixing array sizes
and struct members have been landing for several years now, and we're
finally able to turn this on to find any remaining stragglers.
Summary:
Various fixes across several hardening areas:
- loadpin: Fix verity target enforcement (Matthias Kaehlcke).
- zero-call-used-regs: Add missing clobbers in paravirt (Bill
Wendling).
- CFI: clean up sparc function pointer type mismatches (Bart Van
Assche).
- Clang: Adjust compiler flag detection for various Clang changes
(Sami Tolvanen, Kees Cook).
- fortify: Fix warnings in arch-specific code in sh, ARM, and xen.
Improvements to existing features:
- testing: improve overflow KUnit test, introduce fortify KUnit test,
add more coverage to LKDTM tests (Bart Van Assche, Kees Cook).
- overflow: Relax overflow type checking for wider utility.
New features:
- string: Introduce strtomem() and strtomem_pad() to fill a gap in
strncpy() replacement needs.
- um: Enable FORTIFY_SOURCE support.
- fortify: Enable run-time struct member memcpy() overflow warning"
* tag 'hardening-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (27 commits)
Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
hardening: Remove Clang's enable flag for -ftrivial-auto-var-init=zero
sparc: Unbreak the build
x86/paravirt: add extra clobbers with ZERO_CALL_USED_REGS enabled
x86/paravirt: clean up typos and grammaros
fortify: Convert to struct vs member helpers
fortify: Explicitly check bounds are compile-time constants
x86/entry: Work around Clang __bdos() bug
ARM: decompressor: Include .data.rel.ro.local
fortify: Adjust KUnit test for modular build
sh: machvec: Use char[] for section boundaries
kunit/memcpy: Avoid pathological compile-time string size
lib: Improve the is_signed_type() kunit test
LoadPin: Require file with verity root digests to have a header
dm: verity-loadpin: Only trust verity targets with enforcement
LoadPin: Fix Kconfig doc about format of file with verity digests
um: Enable FORTIFY_SOURCE
lkdtm: Update tests for memcpy() run-time warnings
fortify: Add run-time WARN for cross-field memcpy()
fortify: Use SIZE_MAX instead of (size_t)-1
...
Linus Torvalds [Tue, 4 Oct 2022 00:11:07 +0000 (17:11 -0700)]
Merge tag 'kcfi-v6.1-rc1' of git://git./linux/kernel/git/kees/linux
Pull kcfi updates from Kees Cook:
"This replaces the prior support for Clang's standard Control Flow
Integrity (CFI) instrumentation, which has required a lot of special
conditions (e.g. LTO) and work-arounds.
The new implementation ("Kernel CFI") is specific to C, directly
designed for the Linux kernel, and takes advantage of architectural
features like x86's IBT. This series retains arm64 support and adds
x86 support.
GCC support is expected in the future[1], and additional "generic"
architectural support is expected soon[2].
Summary:
- treewide: Remove old CFI support details
- arm64: Replace Clang CFI support with Clang KCFI support
- x86: Introduce Clang KCFI support"
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107048
Link: https://github.com/samitolvanen/llvm-project/commits/kcfi_generic
* tag 'kcfi-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux: (22 commits)
x86: Add support for CONFIG_CFI_CLANG
x86/purgatory: Disable CFI
x86: Add types to indirectly called assembly functions
x86/tools/relocs: Ignore __kcfi_typeid_ relocations
kallsyms: Drop CONFIG_CFI_CLANG workarounds
objtool: Disable CFI warnings
objtool: Preserve special st_shndx indexes in elf_update_symbol
treewide: Drop __cficanonical
treewide: Drop WARN_ON_FUNCTION_MISMATCH
treewide: Drop function_nocfi
init: Drop __nocfi from __init
arm64: Drop unneeded __nocfi attributes
arm64: Add CFI error handling
arm64: Add types to indirect called assembly functions
psci: Fix the function type for psci_initcall_t
lkdtm: Emit an indirect call for CFI tests
cfi: Add type helper macros
cfi: Switch to -fsanitize=kcfi
cfi: Drop __CFI_ADDRESSABLE
cfi: Remove CONFIG_CFI_CLANG_SHADOW
...
Linus Torvalds [Mon, 3 Oct 2022 23:56:40 +0000 (16:56 -0700)]
Merge tag 'execve-v6.1-rc1' of git://git./linux/kernel/git/kees/linux
Pull execve updates from Kees Cook:
"This removes a.out support globally; it has been disabled for a while
now.
- Remove a.out implementation globally (Eric W. Biederman)
- Remove unused linux_binprm::taso member (Lukas Bulwahn)"
* tag 'execve-v6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
binfmt: remove taso from linux_binprm struct
a.out: Remove the a.out implementation
Linus Torvalds [Mon, 3 Oct 2022 23:39:37 +0000 (16:39 -0700)]
Merge tag 'rust-v6.1-rc1' of https://github.com/Rust-for-Linux/linux
Pull Rust introductory support from Kees Cook:
"The tree has a recent base, but has fundamentally been in linux-next
for a year and a half[1]. It's been updated based on feedback from the
Kernel Maintainer's Summit, and to gain recent Reviewed-by: tags.
Miguel is the primary maintainer, with me helping where needed/wanted.
Our plan is for the tree to switch to the standard non-rebasing
practice once this initial infrastructure series lands.
The contents are the absolute minimum to get Rust code building in the
kernel, with many more interfaces[2] (and drivers - NVMe[3], 9p[4], M1
GPU[5]) on the way.
The initial support of Rust-for-Linux comes in roughly 4 areas:
- Kernel internals (kallsyms expansion for Rust symbols, %pA format)
- Kbuild infrastructure (Rust build rules and support scripts)
- Rust crates and bindings for initial minimum viable build
- Rust kernel documentation and samples
Rust support has been in linux-next for a year and a half now, and the
short log doesn't do justice to the number of people who have
contributed both to the Linux kernel side but also to the upstream
Rust side to support the kernel's needs. Thanks to these 173 people,
and many more, who have been involved in all kinds of ways:
Miguel Ojeda, Wedson Almeida Filho, Alex Gaynor, Boqun Feng, Gary Guo,
Björn Roy Baron, Andreas Hindborg, Adam Bratschi-Kaye, Benno Lossin,
Maciej Falkowski, Finn Behrens, Sven Van Asbroeck, Asahi Lina, FUJITA
Tomonori, John Baublitz, Wei Liu, Geoffrey Thomas, Philip Herron,
Arthur Cohen, David Faust, Antoni Boucher, Philip Li, Yujie Liu,
Jonathan Corbet, Greg Kroah-Hartman, Paul E. McKenney, Josh Triplett,
Kent Overstreet, David Gow, Alice Ryhl, Robin Randhawa, Kees Cook,
Nick Desaulniers, Matthew Wilcox, Linus Walleij, Joe Perches, Michael
Ellerman, Petr Mladek, Masahiro Yamada, Arnaldo Carvalho de Melo,
Andrii Nakryiko, Konstantin Shelekhin, Rasmus Villemoes, Konstantin
Ryabitsev, Stephen Rothwell, Andy Shevchenko, Sergey Senozhatsky, John
Paul Adrian Glaubitz, David Laight, Nathan Chancellor, Jonathan
Cameron, Daniel Latypov, Shuah Khan, Brendan Higgins, Julia Lawall,
Laurent Pinchart, Geert Uytterhoeven, Akira Yokosawa, Pavel Machek,
David S. Miller, John Hawley, James Bottomley, Arnd Bergmann,
Christian Brauner, Dan Robertson, Nicholas Piggin, Zhouyi Zhou, Elena
Zannoni, Jose E. Marchesi, Leon Romanovsky, Will Deacon, Richard
Weinberger, Randy Dunlap, Paolo Bonzini, Roland Dreier, Mark Brown,
Sasha Levin, Ted Ts'o, Steven Rostedt, Jarkko Sakkinen, Michal
Kubecek, Marco Elver, Al Viro, Keith Busch, Johannes Berg, Jan Kara,
David Sterba, Connor Kuehl, Andy Lutomirski, Andrew Lunn, Alexandre
Belloni, Peter Zijlstra, Russell King, Eric W. Biederman, Willy
Tarreau, Christoph Hellwig, Emilio Cobos Álvarez, Christian Poveda,
Mark Rousskov, John Ericson, TennyZhuang, Xuanwo, Daniel Paoliello,
Manish Goregaokar, comex, Josh Stone, Stephan Sokolow, Philipp Krones,
Guillaume Gomez, Joshua Nelson, Mats Larsen, Marc Poulhiès, Samantha
Miller, Esteban Blanc, Martin Schmidt, Martin Rodriguez Reboredo,
Daniel Xu, Viresh Kumar, Bartosz Golaszewski, Vegard Nossum, Milan
Landaverde, Dariusz Sosnowski, Yuki Okushi, Matthew Bakhtiari, Wu
XiangCheng, Tiago Lam, Boris-Chengbiao Zhou, Sumera Priyadarsini,
Viktor Garske, Niklas Mohrin, Nándor István Krácser, Morgan Bartlett,
Miguel Cano, Léo Lanteri Thauvin, Julian Merkle, Andreas Reindl,
Jiapeng Chong, Fox Chen, Douglas Su, Antonio Terceiro, SeongJae Park,
Sergio González Collado, Ngo Iok Ui (Wu Yu Wei), Joshua Abraham,
Milan, Daniel Kolsoi, ahomescu, Manas, Luis Gerhorst, Li Hongyu,
Philipp Gesang, Russell Currey, Jalil David Salamé Messina, Jon Olson,
Raghvender, Angelos, Kaviraj Kanagaraj, Paul Römer, Sladyn Nunes,
Mauro Baladés, Hsiang-Cheng Yang, Abhik Jain, Hongyu Li, Sean Nash,
Yuheng Su, Peng Hao, Anhad Singh, Roel Kluin, Sara Saa, Geert
Stappers, Garrett LeSage, IFo Hancroft, and Linus Torvalds"
Link: https://lwn.net/Articles/849849/
Link: https://github.com/Rust-for-Linux/linux/commits/rust
Link: https://github.com/metaspace/rust-linux/commit/d88c3744d6cbdf11767e08bad56cbfb67c4c96d0
Link: https://github.com/wedsonaf/linux/commit/9367032607f7670de0ba1537cf09ab0f4365a338
Link: https://github.com/AsahiLinux/linux/commits/gpu/rust-wip
* tag 'rust-v6.1-rc1' of https://github.com/Rust-for-Linux/linux: (27 commits)
MAINTAINERS: Rust
samples: add first Rust examples
x86: enable initial Rust support
docs: add Rust documentation
Kbuild: add Rust support
rust: add `.rustfmt.toml`
scripts: add `is_rust_module.sh`
scripts: add `rust_is_available.sh`
scripts: add `generate_rust_target.rs`
scripts: add `generate_rust_analyzer.py`
scripts: decode_stacktrace: demangle Rust symbols
scripts: checkpatch: enable language-independent checks for Rust
scripts: checkpatch: diagnose uses of `%pA` in the C side as errors
vsprintf: add new `%pA` format specifier
rust: export generated symbols
rust: add `kernel` crate
rust: add `bindings` crate
rust: add `macros` crate
rust: add `compiler_builtins` crate
rust: adapt `alloc` crate to the kernel
...
Linus Torvalds [Mon, 3 Oct 2022 22:33:38 +0000 (15:33 -0700)]
Merge tag 'thermal-6.1-rc1' of git://git./linux/kernel/git/rafael/linux-pm
Pull thermal control updates from Rafael Wysocki:
"The most significant part of this update is the thermal control DT
initialization rework from Daniel Lezcano and the following conversion
of drivers to use the new API introduced by it
Apart from that, the maximum number of trip points in a thermal zone
is increased and there are some fixes and code cleanups
Specifics:
- Rework the device tree initialization, convert the drivers to the
new API and remove the old OF code (Daniel Lezcano)
- Fix return value to -ENODEV when searching for a specific thermal
zone which does not exist (Daniel Lezcano)
- Fix the return value inspection in of_thermal_zone_find() (Dan
Carpenter)
- Fix kernel panic when KASAN is enabled as it detects use after free
when unregistering a thermal zone (Daniel Lezcano)
- Move the set_trip ops inside the therma sysfs code (Daniel Lezcano)
- Remove unnecessary error message as it is already shown in the
underlying function (Jiapeng Chong)
- Rework the monitoring path and move the locks upper in the call
stack to fix some potentials race windows (Daniel Lezcano)
- Fix lockdep_assert() warning introduced by the lock rework (Daniel
Lezcano)
- Do not lock thermal zone mutex in the user space governor (Rafael
Wysocki)
- Revert the Mellanox 'hotter thermal zone' feature because it is
already handled in the thermal framework core code (Daniel Lezcano)
- Increase maximum number of trip points in the thermal core (Sumeet
Pawnikar)
- Replace strlcpy() with unused retval with strscpy() in the core
thermal control code (Wolfram Sang)
- Use module_pci_driver() macro in the int340x processor_thermal
driver (Shang XiaoJing)
- Use get_cpu() instead of smp_processor_id() in the intel_powerclamp
thermal driver to prevent it from crashing and remove unused
accounting for IRQ wakes from it (Srinivas Pandruvada)
- Consolidate priv->data_vault checks in int340x_thermal (Rafael
Wysocki)
- Check the policy first in cpufreq_cooling_register() (Xuewen Yan)
- Drop redundant error message from da9062-thermal (zhaoxiao)
- Drop of_match_ptr() from thermal_mmio (Jean Delvare)"
* tag 'thermal-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (55 commits)
thermal: core: Increase maximum number of trip points
thermal: int340x: processor_thermal: Use module_pci_driver() macro
thermal: intel_powerclamp: Remove accounting for IRQ wakes
thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
thermal: int340x_thermal: Consolidate priv->data_vault checks
thermal: cpufreq_cooling: Check the policy first in cpufreq_cooling_register()
thermal: Drop duplicate words from comments
thermal: move from strlcpy() with unused retval to strscpy()
thermal: da9062-thermal: Drop redundant error message
thermal/drivers/thermal_mmio: Drop of_match_ptr()
thermal: gov_user_space: Do not lock thermal zone mutex
Revert "mlxsw: core: Add the hottest thermal zone detection"
thermal/core: Fix lockdep_assert() warning
thermal/core: Move the mutex inside the thermal_zone_device_update() function
thermal/core: Move the thermal zone lock out of the governors
thermal/governors: Group the thermal zone lock inside the throttle function
thermal/core: Rework the monitoring a bit
thermal/core: Rearm the monitoring only one time
thermal/drivers/qcom/spmi-adc-tm5: Remove unnecessary print function dev_err()
thermal/of: Remove old OF code
...
Linus Torvalds [Mon, 3 Oct 2022 20:26:47 +0000 (13:26 -0700)]
Merge tag 'pm-6.1-rc1' of git://git./linux/kernel/git/rafael/linux-pm
Pull power management updates from Rafael Wysocki:
"These add support for some new hardware, extend the existing hardware
support, fix some issues and clean up code
Specifics:
- Add isupport for Tiger Lake in no-HWP mode to intel_pstate (Doug
Smythies)
- Update the AMD P-state driver (Perry Yuan):
- Fix wrong lowest perf fetch
- Map desired perf into pstate scope for powersave governor
- Update pstate frequency transition delay time
- Fix initial highest_perf value
- Clean up
- Move max CPU capacity to sugov_policy in the schedutil cpufreq
governor (Lukasz Luba)
- Add SM6115 to cpufreq-dt blocklist (Adam Skladowski)
- Add support for Tegra239 and minor cleanups (Sumit Gupta, ye
xingchen, and Yang Yingliang)
- Add freq qos for qcom cpufreq driver and minor cleanups (Xuewen
Yan, and Viresh Kumar)
- Minor cleanups around functions called at module_init() (Xiu
Jianfeng)
- Use module_init and add module_exit for bmips driver (Zhang
Jianhua)
- Add AlderLake-N support to intel_idle (Zhang Rui)
- Replace strlcpy() with unused retval with strscpy() in intel_idle
(Wolfram Sang)
- Remove redundant check from cpuidle_switch_governor() (Yu Liao)
- Replace strlcpy() with unused retval with strscpy() in the powernv
cpuidle driver (Wolfram Sang)
- Drop duplicate word from a comment in the coupled cpuidle driver
(Jason Wang)
- Make rpm_resume() return -EINPROGRESS if RPM_NOWAIT is passed to it
in the flags and the device is about to resume (Rafael Wysocki)
- Add extra debugging statement for multiple active IRQs to system
wakeup handling code (Mario Limonciello)
- Replace strlcpy() with unused retval with strscpy() in the core
system suspend support code (Wolfram Sang)
- Update the intel_rapl power capping driver:
- Use standard Energy Unit for SPR Dram RAPL domain (Zhang Rui).
- Add support for RAPTORLAKE_S (Zhang Rui).
- Fix UBSAN shift-out-of-bounds issue (Chao Qin)
- Handle -EPROBE_DEFER when regulator is not probed on
mtk-ci-devfreq.c (AngeloGioacchino Del Regno)
- Fix message typo and use dev_err_probe() in rockchip-dfi.c
(Christophe JAILLET)"
* tag 'pm-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (29 commits)
cpufreq: qcom-cpufreq-hw: Add cpufreq qos for LMh
cpufreq: Add __init annotation to module init funcs
cpufreq: tegra194: change tegra239_cpufreq_soc to static
PM / devfreq: rockchip-dfi: Fix an error message
PM / devfreq: mtk-cci: Handle sram regulator probe deferral
powercap: intel_rapl: Use standard Energy Unit for SPR Dram RAPL domain
PM: runtime: Return -EINPROGRESS from rpm_resume() in the RPM_NOWAIT case
intel_idle: Add AlderLake-N support
powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue
cpufreq: tegra194: Add support for Tegra239
cpufreq: qcom-cpufreq-hw: Fix uninitialized throttled_freq warning
cpufreq: intel_pstate: Add Tigerlake support in no-HWP mode
powercap: intel_rapl: Add support for RAPTORLAKE_S
cpufreq: amd-pstate: Fix initial highest_perf value
cpuidle: Remove redundant check in cpuidle_switch_governor()
PM: wakeup: Add extra debugging statement for multiple active IRQs
cpufreq: tegra194: Remove the unneeded result variable
PM: suspend: move from strlcpy() with unused retval to strscpy()
intel_idle: move from strlcpy() with unused retval to strscpy()
cpuidle: powernv: move from strlcpy() with unused retval to strscpy()
...
Linus Torvalds [Mon, 3 Oct 2022 20:19:53 +0000 (13:19 -0700)]
Merge tag 'acpi-6.1-rc1' of git://git./linux/kernel/git/rafael/linux-pm
Pull ACPI updates from Rafael Wysocki:
"ACPI and PNP updates for 6.1-rc1.
These rearrange the ACPI device object initialization code (to get rid
of a redundant parent pointer from struct acpi_device among other
things), unify the _UID handling, drop support for some _OSI strings
that should not be necessary any more, add new IDs to support more
hardware and some more quirks, fix a few issues and clean up code all
over.
Specifics:
- Reimplement acpi_get_pci_dev() using the list of physical devices
associated with the given ACPI device object (Rafael Wysocki)
- Rename ACPI device object reference counting functions (Rafael
Wysocki)
- Rearrange ACPI device object initialization code (Rafael Wysocki)
- Drop parent field from struct acpi_device (Rafael Wysocki)
- Extend the the int3472-tps68470 driver to support multiple
consumers of a single TPS68470 along with the requisite
framework-level support (Daniel Scally)
- Filter out non-memory resources in is_memory(), add a helper
function to find all memory type resources of an ACPI device object
and use that function in 3 places (Heikki Krogerus)
- Add IRQ override quirks for Asus Vivobook K3402ZA/K3502ZA and ASUS
model S5402ZA (Tamim Khan, Kellen Renshaw)
- Fix acpi_dev_state_d0() kerneldoc (Sakari Ailus)
- Fix up suspend-to-idle support on ASUS Rembrandt laptops (Mario
Limonciello)
- Clean up ACPI platform devices support code (Andy Shevchenko, John
Garry)
- Clean up ACPI bus management code (Andy Shevchenko, ye xingchen)
- Add support for multiple DMA windows with different offsets to the
ACPI device enumeration code and use it on LoongArch (Jianmin Lv)
- Clean up the ACPI LPSS (Intel SoC) driver (Andy Shevchenko)
- Add a quirk for Dell Inspiron 14 2-in-1 for StorageD3Enable (Mario
Limonciello)
- Drop unused dev_fmt() and redundant 'HMAT' prefix from the HMAT
parsing code (Liu Shixin)
- Make ACPI FPDT parsing code avoid calling acpi_os_map_memory() on
invalid physical addresses (Hans de Goede)
- Silence missing-declarations warning related to Apple device
properties management (Lukas Wunner)
- Disable frequency invariance in the CPPC library if registers used
by cppc_get_perf_ctrs() are accessed via PCC (Jeremy Linton)
- Add ACPI disabled check to acpi_cpc_valid() (Perry Yuan)
- Fix Tx acknowledge in the PCC address space handler (Huisong Li)
- Use wait_for_completion_timeout() for PCC mailbox operations
(Huisong Li)
- Release resources on PCC address space setup failure path (Rafael
Mendonca)
- Remove unneeded result variables from APEI code (ye xingchen)
- Print total number of records found during BERT log parsing (Dmitry
Monakhov)
- Drop support for 3 _OSI strings that should not be necessary any
more and update documentation on custom _OSI strings so that adding
new ones is not encouraged any more (Mario Limonciello)
- Drop unneeded result variable from ec_write() (ye xingchen)
- Remove the leftover struct acpi_ac_bl from the ACPI AC driver
(Hanjun Guo)
- Reorder symbols to get rid of a few forward declarations in the
ACPI fan driver (Uwe Kleine-König)
- Add Toshiba Satellite/Portege Z830 ACPI backlight quirk (Arvid
Norlander)
- Add ARM DMA-330 controller to the supported list in the ACPI AMBA
driver (Vijayenthiran Subramaniam)
- Drop references to non-functional 01.org/linux-acpi web site from
MAINTAINERS and Kconfig help texts (Rafael Wysocki)
- Replace strlcpy() with unused retval with strscpy() in the ACPI
support code (Wolfram Sang)
- Do not initialize ret in main() in the pfrut utility (Shi junming)
- Drop useless ACPI DSDT override documentation (Rafael Wysocki)
- Fix a few typos and wording mistakes in the ACPI device enumeration
documentation (Jean Delvare)
- Introduce acpi_dev_uid_to_integer() to convert a _UID string into
an integer value (Andy Shevchenko)
- Use acpi_dev_uid_to_integer() in several places to unify _UID
handling (Andy Shevchenko)
- Drop unused pnpid32_to_pnpid() declaration from PNP code (Gaosheng
Cui)"
* tag 'acpi-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (79 commits)
ACPI: LPSS: Deduplicate skipping device in acpi_lpss_create_device()
ACPI: LPSS: Replace loop with first entry retrieval
ACPI: x86: s2idle: Add another ID to s2idle_dmi_table
ACPI: x86: s2idle: Fix a NULL pointer dereference
MAINTAINERS: Drop records pointing to 01.org/linux-acpi
ACPI: Kconfig: Drop link to https://01.org/linux-acpi
ACPI: docs: Drop useless DSDT override documentation
ACPI: DPTF: Drop stale link from Kconfig help
ACPI: x86: s2idle: Add a quirk for ASUSTeK COMPUTER INC. ROG Flow X13
ACPI: x86: s2idle: Add a quirk for Lenovo Slim 7 Pro 14ARH7
ACPI: x86: s2idle: Add a quirk for ASUS ROG Zephyrus G14
ACPI: x86: s2idle: Add a quirk for ASUS TUF Gaming A17 FA707RE
ACPI: x86: s2idle: Add module parameter to prefer Microsoft GUID
ACPI: x86: s2idle: If a new AMD _HID is missing assume Rembrandt
ACPI: x86: s2idle: Move _HID handling for AMD systems into structures
platform/x86: int3472: Add board data for Surface Go2 IR camera
platform/x86: int3472: Support multiple gpio lookups in board data
platform/x86: int3472: Support multiple clock consumers
ACPI: bus: Add iterator for dependent devices
ACPI: scan: Add acpi_dev_get_next_consumer_dev()
...
Rafael J. Wysocki [Mon, 3 Oct 2022 18:43:32 +0000 (20:43 +0200)]
Merge branches 'thermal-intel' and 'thermal-drivers'
Merge thermal control driver changes for 6.1-rc1:
- Use module_pci_driver() macro in the int340x processor_thermal
driver (Shang XiaoJing).
- Use get_cpu() instead of smp_processor_id() in the intel_powerclamp
thermal driver to prevent it from crashing and remove unused
accounting for IRQ wakes from it (Srinivas Pandruvada).
- Consolidate priv->data_vault checks in int340x_thermal (Rafael
Wysocki).
- Check the policy first in cpufreq_cooling_register() (Xuewen Yan).
- Drop redundant error message from da9062-thermal (zhaoxiao).
- Drop of_match_ptr() from thermal_mmio (Jean Delvare).
* thermal-intel:
thermal: int340x: processor_thermal: Use module_pci_driver() macro
thermal: intel_powerclamp: Remove accounting for IRQ wakes
thermal: intel_powerclamp: Use get_cpu() instead of smp_processor_id() to avoid crash
thermal: int340x_thermal: Consolidate priv->data_vault checks
* thermal-drivers:
thermal: cpufreq_cooling: Check the policy first in cpufreq_cooling_register()
thermal: da9062-thermal: Drop redundant error message
thermal/drivers/thermal_mmio: Drop of_match_ptr()
Rafael J. Wysocki [Mon, 3 Oct 2022 18:38:43 +0000 (20:38 +0200)]
Merge branch 'thermal-core'
Merge core thermal control changes for 6.1-rc1:
- Increase maximum number of trip points in the thermal core (Sumeet
Pawnikar).
- Replace strlcpy() with unused retval with strscpy() in the core
thermal control code (Wolfram Sang).
- Do not lock thermal zone mutex in the user space governor (Rafael
Wysocki)
- Rework the device tree initialization, convert the drivers to the
new API and remove the old OF code (Daniel Lezcano)
- Fix return value to -ENODEV when searching for a specific thermal
zone which does not exist (Daniel Lezcano)
- Fix the return value inspection in of_thermal_zone_find() (Dan
Carpenter)
- Fix kernel panic when KASAN is enabled as it detects use after
free when unregistering a thermal zone (Daniel Lezcano)
- Move the set_trip ops inside the therma sysfs code (Daniel Lezcano)
- Remove unnecessary error message as it is already showed in the
underlying function (Jiapeng Chong)
- Rework the monitoring path and move the locks upper in the call
stack to fix some potentials race windows (Daniel Lezcano)
- Fix lockdep_assert() warning introduced by the lock rework (Daniel
Lezcano)
- Revert the Mellanox 'hotter thermal zone' feature because it is
already handled in the thermal framework core code (Daniel Lezcano)
* thermal-core: (47 commits)
thermal: core: Increase maximum number of trip points
thermal: move from strlcpy() with unused retval to strscpy()
thermal: gov_user_space: Do not lock thermal zone mutex
Revert "mlxsw: core: Add the hottest thermal zone detection"
thermal/core: Fix lockdep_assert() warning
thermal/core: Move the mutex inside the thermal_zone_device_update() function
thermal/core: Move the thermal zone lock out of the governors
thermal/governors: Group the thermal zone lock inside the throttle function
thermal/core: Rework the monitoring a bit
thermal/core: Rearm the monitoring only one time
thermal/drivers/qcom/spmi-adc-tm5: Remove unnecessary print function dev_err()
thermal/of: Remove old OF code
thermal/core: Move set_trip_temp ops to the sysfs code
thermal/drivers/samsung: Switch to new of thermal API
regulator/drivers/max8976: Switch to new of thermal API
Input: sun4i-ts - switch to new of thermal API
iio/drivers/sun4i_gpadc: Switch to new of thermal API
hwmon/drivers/core: Switch to new of thermal API
hwmon: pm_bus: core: Switch to new of thermal API
ata/drivers/ahci_imx: Switch to new of thermal API
...
Rafael J. Wysocki [Mon, 3 Oct 2022 18:27:49 +0000 (20:27 +0200)]
Merge branches 'pm-cpuidle', 'pm-core', 'pm-sleep' and 'powercap'
Merge cpuidle changes, PM core changes and power capping changes for
6.1-rc1:
- Add AlderLake-N support to intel_idle (Zhang Rui).
- Replace strlcpy() with unused retval with strscpy() in intel_idle
(Wolfram Sang).
- Remove redundant check from cpuidle_switch_governor() (Yu Liao).
- Replace strlcpy() with unused retval with strscpy() in the powernv
cpuidle driver (Wolfram Sang).
- Drop duplicate word from a comment in the coupled cpuidle driver
(Jason Wang).
- Make rpm_resume() return -EINPROGRESS if RPM_NOWAIT is passed to it
in the flags and the device is about to resume (Rafael Wysocki).
- Add extra debugging statement for multiple active IRQs to system
wakeup handling code (Mario Limonciello).
- Replace strlcpy() with unused retval with strscpy() in the core
system suspend support code (Wolfram Sang).
- Update the intel_rapl power capping driver:
* Use standard Energy Unit for SPR Dram RAPL domain (Zhang Rui).
* Add support for RAPTORLAKE_S (Zhang Rui).
* Fix UBSAN shift-out-of-bounds issue (Chao Qin).
* pm-cpuidle:
intel_idle: Add AlderLake-N support
cpuidle: Remove redundant check in cpuidle_switch_governor()
intel_idle: move from strlcpy() with unused retval to strscpy()
cpuidle: powernv: move from strlcpy() with unused retval to strscpy()
cpuidle: coupled: Drop duplicate word from a comment
* pm-core:
PM: runtime: Return -EINPROGRESS from rpm_resume() in the RPM_NOWAIT case
* pm-sleep:
PM: wakeup: Add extra debugging statement for multiple active IRQs
PM: suspend: move from strlcpy() with unused retval to strscpy()
* powercap:
powercap: intel_rapl: Use standard Energy Unit for SPR Dram RAPL domain
powercap: intel_rapl: fix UBSAN shift-out-of-bounds issue
powercap: intel_rapl: Add support for RAPTORLAKE_S
Rafael J. Wysocki [Mon, 3 Oct 2022 18:19:13 +0000 (20:19 +0200)]
Merge branch 'pm-cpufreq'
Merge cpufreq changes for 6.1-rc1:
- Add isupport for Tiger Lake in no-HWP mode to intel_pstate (Doug
Smythies).
- Update the AMD P-state driver (Perry Yuan):
* Fix wrong lowest perf fetch.
* Map desired perf into pstate scope for powersave governor.
* Update pstate frequency transition delay time.
* Fix initial highest_perf value.
* Clean up.
- Move max CPU capacity to sugov_policy in the schedutil cpufreq
governor (Lukasz Luba).
- Add SM6115 to cpufreq-dt blocklist (Adam Skladowski).
- Add support for Tegra239 and minor cleanups (Sumit Gupta, ye xingchen,
and Yang Yingliang).
- Add freq qos for qcom cpufreq driver and minor cleanups (Xuewen Yan,
and Viresh Kumar).
- Minor cleanups around functions called at module_init() (Xiu Jianfeng).
- Use module_init and add module_exit for bmips driver (Zhang Jianhua).
* pm-cpufreq:
cpufreq: qcom-cpufreq-hw: Add cpufreq qos for LMh
cpufreq: Add __init annotation to module init funcs
cpufreq: tegra194: change tegra239_cpufreq_soc to static
cpufreq: tegra194: Add support for Tegra239
cpufreq: qcom-cpufreq-hw: Fix uninitialized throttled_freq warning
cpufreq: intel_pstate: Add Tigerlake support in no-HWP mode
cpufreq: amd-pstate: Fix initial highest_perf value
cpufreq: tegra194: Remove the unneeded result variable
cpufreq: amd-pstate: update pstate frequency transition delay time
cpufreq: amd_pstate: map desired perf into pstate scope for powersave governor
cpufreq: amd_pstate: fix wrong lowest perf fetch
cpufreq: amd-pstate: fix white-space
cpufreq: amd-pstate: simplify cpudata pointer assignment
cpufreq: bmips-cpufreq: Use module_init and add module_exit
cpufreq: schedutil: Move max CPU capacity to sugov_policy
cpufreq: Add SM6115 to cpufreq-dt-platdev blocklist
Rafael J. Wysocki [Mon, 3 Oct 2022 18:16:28 +0000 (20:16 +0200)]
Merge branch 'pnp'
Merge a PNP changes for 6.1-rc1:
- Drop unused pnpid32_to_pnpid() declaration from PNP code (Gaosheng
Cui).
* pnp:
PNPBIOS: remove unused pnpid32_to_pnpid() declaration
Rafael J. Wysocki [Mon, 3 Oct 2022 18:09:22 +0000 (20:09 +0200)]
Merge branch 'acpi-uid'
Merge ACPI _UID handling unification changes for 6.1-rc1:
- Introduce acpi_dev_uid_to_integer() to convert a _UID string into an
integer value (Andy Shevchenko).
- Use acpi_dev_uid_to_integer() in several places to unify _UID
handling (Andy Shevchenko).
* acpi-uid:
efi/dev-path-parser: Refactor _UID handling to use acpi_dev_uid_to_integer()
spi: pxa2xx: Refactor _UID handling to use acpi_dev_uid_to_integer()
perf: qcom_l2_pmu: Refactor _UID handling to use acpi_dev_uid_to_integer()
i2c: mlxbf: Refactor _UID handling to use acpi_dev_uid_to_integer()
i2c: amd-mp2-plat: Refactor _UID handling to use acpi_dev_uid_to_integer()
ACPI: x86: Refactor _UID handling to use acpi_dev_uid_to_integer()
ACPI: LPSS: Refactor _UID handling to use acpi_dev_uid_to_integer()
ACPI: utils: Add acpi_dev_uid_to_integer() helper to get _UID as integer
Rafael J. Wysocki [Mon, 3 Oct 2022 18:03:49 +0000 (20:03 +0200)]
Merge branches 'acpi-misc', 'acpi-tools' and 'acpi-docs'
Merge miscellaneous ACPI material, ACPI tools changes and ACPI
documentation updates for 6.1-rc1:
- Drop references to non-functional 01.org/linux-acpi web site from
MAINTAINERS and Kconfig help texts (Rafael Wysocki).
- Replace strlcpy() with unused retval with strscpy() in the ACPI
support code (Wolfram Sang).
- Do not initialize ret in main() in the pfrut utility (Shi junming).
- Drop useless ACPI DSDT override documentation (Rafael Wysocki).
- Fix a few typos and wording mistakes in the ACPI device enumeration
documentation (Jean Delvare).
* acpi-misc:
MAINTAINERS: Drop records pointing to 01.org/linux-acpi
ACPI: Kconfig: Drop link to https://01.org/linux-acpi
ACPI: DPTF: Drop stale link from Kconfig help
ACPI: move from strlcpy() with unused retval to strscpy()
* acpi-tools:
ACPI: tools: pfrut: Do not initialize ret in main()
* acpi-docs:
ACPI: docs: Drop useless DSDT override documentation
ACPI: docs: enumeration: Fix a few typos and wording mistakes
Rafael J. Wysocki [Mon, 3 Oct 2022 17:59:47 +0000 (19:59 +0200)]
Merge branches 'acpi-ec', 'acpi-ac', 'acpi-fan', 'acpi-video' and 'acpi-amba'
Merge EC, AC, fan and backlight driver changes and ACPI AMBA support
update for 6.1-rc1:
- Drop unneeded result variable from ec_write() (ye xingchen).
- Remove the leftover struct acpi_ac_bl from the ACPI AC driver (Hanjun
Guo).
- Reorder symbols to get rid of a few forward declarations in the ACPI
fan driver (Uwe Kleine-König).
- Add Toshiba Satellite/Portege Z830 ACPI backlight quirk (Arvid
Norlander).
- Add ARM DMA-330 controller to the supported list in the ACPI AMBA
driver (Vijayenthiran Subramaniam).
* acpi-ec:
ACPI: EC: Drop unneeded result variable from ec_write()
* acpi-ac:
ACPI: AC: Remove the leftover struct acpi_ac_bl
* acpi-fan:
ACPI: fan: Reorder symbols to get rid of a few forward declarations
* acpi-video:
ACPI: video: Add Toshiba Satellite/Portege Z830 quirk
* acpi-amba:
ACPI: AMBA: Add ARM DMA-330 controller to the supported list
Rafael J. Wysocki [Mon, 3 Oct 2022 17:49:05 +0000 (19:49 +0200)]
Merge branches 'acpi-cppc', 'acpi-pcc', 'acpi-apei' and 'acpi-osi'
Merge new material related to CPPC, PCC, APEI and OSI strings handling
for 6.1-rc1:
- Disable frequency invariance in the CPPC library if registers used
by cppc_get_perf_ctrs() are accessed via PCC (Jeremy Linton).
- Add ACPI disabled check to acpi_cpc_valid() (Perry Yuan).
- Fix Tx acknowledge in the PCC address space handler (Huisong Li).
- Use wait_for_completion_timeout() for PCC mailbox operations (Huisong
Li).
- Release resources on PCC address space setup failure path (Rafael
Mendonca).
- Remove unneeded result variables from APEI code (ye xingchen).
- Print total number of records found during BERT log parsing (Dmitry
Monakhov).
- Drop support for 3 _OSI strings that should not be necessary any
more and update documentation on custom _OSI strings so that adding
new ones is not encouraged any more (Mario Limonciello).
* acpi-cppc:
ACPI: CPPC: Disable FIE if registers in PCC regions
ACPI: CPPC: Add ACPI disabled check to acpi_cpc_valid()
* acpi-pcc:
ACPI: PCC: Fix Tx acknowledge in the PCC address space handler
ACPI: PCC: replace wait_for_completion()
ACPI: PCC: Release resources on address space setup failure path
* acpi-apei:
ACPI: APEI: Remove unneeded result variables
ACPI: APEI: Add BERT error log footer
* acpi-osi:
ACPI: OSI: Update Documentation on custom _OSI strings
ACPI: OSI: Remove Linux-HPI-Hybrid-Graphics _OSI string
ACPI: OSI: Remove Linux-Lenovo-NV-HDMI-Audio _OSI string
ACPI: OSI: Remove Linux-Dell-Video _OSI string
Linus Torvalds [Mon, 3 Oct 2022 17:23:32 +0000 (10:23 -0700)]
Merge tag 'docs-6.1' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"There's not a huge amount of activity in the docs tree this time
around, but a few significant changes even so:
- A complete rewriting of the top-level index.rst file, which mostly
reflects itself in a redone top page in the HTML-rendered docs. The
hope is that the new organization will be a friendlier starting
point for both users and developers.
- Some math-rendering improvements.
- A coding-style.rst update on the use of BUG() and WARN()
- A big maintainer-PHP guide update.
- Some code-of-conduct updates
- More Chinese translation work
Plus the usual pile of typo fixes, corrections, and updates"
* tag 'docs-6.1' of git://git.lwn.net/linux: (66 commits)
checkpatch: warn on usage of VM_BUG_ON() and other BUG variants
coding-style.rst: document BUG() and WARN() rules ("do not crash the kernel")
Documentation: devres: add missing IO helper
Documentation: devres: update IRQ helper
Documentation/mm: modify page_referenced to folio_referenced
Documentation/CoC: Reflect current CoC interpretation and practices
docs/doc-guide: Add documentation on SPHINX_IMGMATH
docs: process/5.Posting.rst: clarify use of Reported-by: tag
docs, kprobes: Fix the wrong location of Kprobes
docs: add a man-pages link to the front page
docs: put atomic*.txt and memory-barriers.txt into the core-api book
docs: move asm-annotations.rst into core-api
docs: remove some index.rst cruft
docs: reconfigure the HTML left column
docs: Rewrite the front page
docs: promote the title of process/index.rst
Documentation: devres: add missing SPI helper
Documentation: devres: add missing PINCTRL helpers
docs: hugetlbpage.rst: fix a typo of hugepage size
docs/zh_CN: Add new translation of admin-guide/bootconfig.rst
...
Linus Torvalds [Mon, 3 Oct 2022 17:11:11 +0000 (10:11 -0700)]
Merge tag 'rcu.2022.09.30a' of git://git./linux/kernel/git/paulmck/linux-rcu
Pull RCU updates from Paul McKenney:
- Documentation updates.
This is the first in a series from an ongoing review of the RCU
documentation. "Why are people thinking -that- about RCU? Oh. Because
that is an entirely reasonable interpretation of its documentation."
- Miscellaneous fixes.
- Improved memory allocation and heuristics.
- Improve rcu_nocbs diagnostic output.
- Add full-sized polled RCU grace period state values.
These are the same size as an rcu_head structure, which is double
that of the traditional unsigned long state values that may still be
obtained from et_state_synchronize_rcu(). The added size avoids
missing overlapping grace periods. This benefit is that call_rcu()
can be replaced by polling, which can be attractive in situations
where RCU-protected data is aged out of memory.
Early in the series, the size of this state value is three unsigned
longs. Later in the series, the fastpaths in synchronize_rcu() and
synchronize_rcu_expedited() are reworked to permit the full state to
be represented by only two unsigned longs. This reworking slows these
two functions down in SMP kernels running either on single-CPU
systems or on systems with all but one CPU offlined, but this should
not be a significant problem. And if it somehow becomes a problem in
some yet-as-unforeseen situations, three-value state values can be
provided for only those situations.
Finally, a pair of functions named same_state_synchronize_rcu() and
same_state_synchronize_rcu_full() allow grace-period state values to
be compared for equality. This permits users to maintain lists of
data structures having the same state value, removing the need for
per-data-structure grace-period state values, thus decreasing memory
footprint.
- Polled SRCU grace-period updates, including adding tests to
rcutorture and reducing the incidence of Tiny SRCU grace-period-state
counter wrap.
- Improve Tasks RCU diagnostics and quiescent-state detection.
* tag 'rcu.2022.09.30a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu: (55 commits)
rcutorture: Use the barrier operation specified by cur_ops
rcu-tasks: Make RCU Tasks Trace check for userspace execution
rcu-tasks: Ensure RCU Tasks Trace loops have quiescent states
rcu-tasks: Convert RCU_LOCKDEP_WARN() to WARN_ONCE()
srcu: Make Tiny SRCU use full-sized grace-period counters
srcu: Make Tiny SRCU poll_state_synchronize_srcu() more precise
srcu: Add GP and maximum requested GP to Tiny SRCU rcutorture output
rcutorture: Make "srcud" option also test polled grace-period API
rcutorture: Limit read-side polling-API testing
rcu: Add functions to compare grace-period state values
rcutorture: Expand rcu_torture_write_types() first "if" statement
rcutorture: Use 1-suffixed variable in rcu_torture_write_types() check
rcu: Make synchronize_rcu() fastpath update only boot-CPU counters
rcutorture: Adjust rcu_poll_need_2gp() for rcu_gp_oldstate field removal
rcu: Remove ->rgos_polled field from rcu_gp_oldstate structure
rcu: Make synchronize_rcu_expedited() fast path update .expedited_sequence
rcu: Remove expedited grace-period fast-path forward-progress helper
rcu: Make synchronize_rcu() fast path update ->gp_seq counters
rcu-tasks: Remove grace-period fast-path rcu-tasks helper
rcu: Set rcu_data structures' initial ->gpwrap value to true
...
Linus Torvalds [Mon, 3 Oct 2022 17:06:15 +0000 (10:06 -0700)]
Merge tag 'lkmm.2022.09.30a' of git://git./linux/kernel/git/paulmck/linux-rcu
Pull LKMM (Linux Kernel Memory Model) updates from Paul McKenney:
"Several documentation updates"
* tag 'lkmm.2022.09.30a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
tools/memory-model: Clarify LKMM's limitations in litmus-tests.txt
docs/memory-barriers.txt: Fixup long lines
docs/memory-barriers.txt: Fix confusing name of 'data dependency barrier'
Linus Torvalds [Mon, 3 Oct 2022 17:01:19 +0000 (10:01 -0700)]
Merge tag 'nolibc.2022.09.30a' of git://git./linux/kernel/git/paulmck/linux-rcu
Pull nolibc updates from Paul McKenney:
"Most notably greatly improved testing. These tests are located in
tools/testing/selftests/nolibc. The output of "make help" is as
follows:
Supported targets under selftests/nolibc:
all call the "run" target below
help this help
sysroot create the nolibc sysroot here (uses $ARCH)
nolibc-test build the executable (uses $CC and $CROSS_COMPILE)
initramfs prepare the initramfs with nolibc-test
defconfig create a fresh new default config (uses $ARCH)
kernel (re)build the kernel with the initramfs (uses $ARCH)
run runs the kernel in QEMU after building it (uses $ARCH, $TEST)
rerun runs a previously prebuilt kernel in QEMU (uses $ARCH, $TEST)
clean clean the sysroot, initramfs, build and output files
The output file is "run.out". Test ranges may be passed using $TEST.
Currently using the following variables:
ARCH = x86
CROSS_COMPILE =
CC = gcc
OUTPUT = /home/git/linux-rcu/tools/testing/selftests/nolibc/
TEST =
QEMU_ARCH = x86_64 [determined from $ARCH]
IMAGE_NAME = bzImage [determined from $ARCH]
The output of a successful x86 "make run" is currently as follows,
with kernel build output omitted:
$ make run
71 test(s) passed."
* tag 'nolibc.2022.09.30a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
selftests/nolibc: Avoid generated files being committed
selftests/nolibc: add a "help" target
selftests/nolibc: "sysroot" target installs a local copy of the sysroot
selftests/nolibc: add a "run" target to start the kernel in QEMU
selftests/nolibc: add a "defconfig" target
selftests/nolibc: add a "kernel" target to build the kernel with the initramfs
selftests/nolibc: support glibc as well
selftests/nolibc: condition some tests on /proc existence
selftests/nolibc: recreate and populate /dev and /proc if missing
selftests/nolibc: on x86, support exiting with isa-debug-exit
selftests/nolibc: exit with poweroff on success when getpid() == 1
selftests/nolibc: add a few tests for some libc functions
selftests/nolibc: implement a few tests for various syscalls
selftests/nolibc: support a test definition format
selftests/nolibc: add basic infrastructure to ease creation of nolibc tests
tools/nolibc: make sys_mmap() automatically use the right __NR_mmap definition
tools/nolibc: fix build warning in sys_mmap() when my_syscall6 is not defined
tools/nolibc: make argc 32-bit in riscv startup code
Linus Torvalds [Mon, 3 Oct 2022 16:56:25 +0000 (09:56 -0700)]
Merge tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm
Pull ARM fixes from Russell King:
"Three fixes for ARM:
- unbreak the RiscPC build
- fix wrong pg_level in page table dumper
- make MT_MEMORY_RO really read-only with LPAE"
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9247/1: mm: set readonly for MT_MEMORY_RO with ARM_LPAE
ARM: 9244/1: dump: Fix wrong pg_level in walk_pmd()
ARM: 9243/1: riscpc: Unbreak the build
Linus Torvalds [Mon, 3 Oct 2022 16:48:47 +0000 (09:48 -0700)]
Merge tag 'm68k-for-v6.1-tag1' of git://git./linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
- Fix forward secrecy of RNG seed boot record handling
- Make RNG seed boot record handling generic for all m68k platforms
using bootinfo
- defconfig updates
- Minor fixes and improvements
* tag 'm68k-for-v6.1-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: Rework BI_VIRT_RNG_SEED as BI_RNG_SEED
m68k: Process bootinfo records before saving them
m68k: defconfig: Update defconfigs for v6.0-rc2
m68k: Allow kexec on M68KCLASSIC with MMU enabled only
m68k: Move from strlcpy with unused retval to strscpy
Linus Torvalds [Mon, 3 Oct 2022 16:31:55 +0000 (09:31 -0700)]
Merge tag 'mips_6.1' of git://git./linux/kernel/git/mips/linux
Pull MIPS updates from Thomas Bogendoerfer:
- mainly cleanups
- fix enabling interrupts on second VPE for Lantiq platform
- switch to use gpiod API
- allow firmware passing RND seed
* tag 'mips_6.1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: (29 commits)
MIPS: pci: lantiq: switch to using gpiod API
mips: allow firmware to pass RNG seed to kernel
MIPS: Simplify __bswapdi2() and __bswapsi2()
MIPS: Silence missing prototype warning
mips: update config files
MIPS: Lantiq: vmmc: fix compile break introduced by gpiod patch
MIPS: IRQ: remove orphan allocate_irqno() declaration
MIPS: remove orphan sb1250_time_init() declaration
MIPS: Lantiq: switch vmmc to use gpiod API
MIPS: lantiq: enable all hardware interrupts on second VPE
MIPS: BCM47XX: Cast memcmp() of function to (void *)
mips: ralink: convert to DEFINE_SHOW_ATTRIBUTE
mips: kernel: convert to DEFINE_SHOW_ATTRIBUTE
mips: cavium: convert to DEFINE_SHOW_ATTRIBUTE
MIPS: AR7: remove orphan declarations from arch/mips/include/asm/mach-ar7/ar7.h
MIPS: remove orphan sni_cpu_time_init() declaration
MIPS: IRQ: remove orphan declarations from arch/mips/include/asm/irq.h
MIPS: Octeon: remove orphan octeon_hal_setup_reserved32() declaration
MIPS: Octeon: remove orphan cvmx_fpa_setup_pool() declaration
MIPS: Octeon: remove orphan octeon_swiotlb declaration
...
Linus Torvalds [Sun, 2 Oct 2022 21:09:07 +0000 (14:09 -0700)]
Linux 6.0
Linus Torvalds [Sun, 2 Oct 2022 17:00:45 +0000 (10:00 -0700)]
Merge tag 'i2c-for-6.0-rc8' of git://git./linux/kernel/git/wsa/linux
Pull i2c fixes from Wolfram Sang:
"Add missing DT bindings for STM32 and a resource leak fix for DaVinci"
* tag 'i2c-for-6.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux:
i2c: davinci: fix PM disable depth imbalance in davinci_i2c_probe
dt-bindings: i2c: st,stm32-i2c: Document wakeup-source property
dt-bindings: i2c: st,stm32-i2c: Document interrupt-names property
Linus Torvalds [Sun, 2 Oct 2022 16:41:27 +0000 (09:41 -0700)]
Merge tag 'perf-urgent-2022-10-02' of git://git./linux/kernel/git/tip/tip
Pull misc perf fixes from Ingo Molnar:
- Fix a PMU enumeration/initialization bug on Intel Alder Lake CPUs
- Fix KVM guest PEBS register handling
- Fix race/reentry bug in perf_output_read_group() reading of PMU
counters
* tag 'perf-urgent-2022-10-02' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Fix reentry problem in perf_output_read_group()
perf/x86/core: Completely disable guest PEBS via guest's global_ctrl
perf/x86/intel: Fix unchecked MSR access error for Alder Lake N
Linus Torvalds [Sun, 2 Oct 2022 16:30:35 +0000 (09:30 -0700)]
Merge tag 'x86_urgent_for_v6.0' of git://git./linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Add the respective UP last level cache mask accessors in order not to
cause segfaults when lscpu accesses their representation in sysfs
- Fix for a race in the alternatives batch patching machinery when
kprobes are set
* tag 'x86_urgent_for_v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cacheinfo: Add a cpu_llc_shared_mask() UP variant
x86/alternative: Fix race in try_get_desc()
Zhang Qilong [Thu, 29 Sep 2022 14:30:38 +0000 (22:30 +0800)]
i2c: davinci: fix PM disable depth imbalance in davinci_i2c_probe
The pm_runtime_enable will increase power disable depth. Thus a
pairing decrement is needed on the error handling path to keep
it balanced according to context.
Fixes: 17f88151ff190 ("i2c: davinci: Add PM Runtime Support")
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Reviewed-by: Bartosz Golaszewski <brgl@bgdev.pl>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Marek Vasut [Mon, 26 Sep 2022 20:46:53 +0000 (22:46 +0200)]
dt-bindings: i2c: st,stm32-i2c: Document wakeup-source property
Document wakeup-source property. This fixes dtbs_check warnings
when building current Linux DTs:
"
arch/arm/boot/dts/stm32mp153c-dhcom-drc02.dtb: i2c@
40015000: Unevaluated properties are not allowed ('wakeup-source' was unexpected)
"
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Marek Vasut [Mon, 26 Sep 2022 20:46:31 +0000 (22:46 +0200)]
dt-bindings: i2c: st,stm32-i2c: Document interrupt-names property
Document interrupt-names property with "event" and "error" interrupt names.
This fixes dtbs_check warnings when building current Linux DTs:
"
arch/arm/boot/dts/stm32mp153c-dhcom-drc02.dtb: i2c@
40015000: Unevaluated properties are not allowed ('interrupt-names' was unexpected)
"
Signed-off-by: Marek Vasut <marex@denx.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Linus Torvalds [Sat, 1 Oct 2022 16:39:42 +0000 (09:39 -0700)]
Merge tag 'usb-6.0-final' of git://git./linux/kernel/git/gregkh/usb
Pull USB/Thunderbolt fixes from Greg KH:
"Here are some tiny USB and Thunderbolt driver fixes and quirks.
Included in here are:
- three uas/usb-storage driver quirks to get the devices working
properly due to broken firmware images in them (they can not run at
high data rates, and are also throttled on other operating systems
because of this)
- thunderbolt bugfix for plug event delays
- typec runtime warning removal
- dwc3 st driver bugfix. Note, a follow-on fix for this will end up
coming in for 6.1-rc1 as the developers are still arguing over what
the final solution will be, but this should be sufficient for now
All of these have been in linux-next with no reported problems"
* tag 'usb-6.0-final' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb:
uas: ignore UAS for Thinkplus chips
usb-storage: Add Hiksemi USB3-FW to IGNORE_UAS
uas: add no-uas quirk for Hiksemi usb_disk
usb: dwc3: st: Fix node's child name
usb: typec: ucsi: Remove incorrect warning
thunderbolt: Explicitly reset plug events delay back to USB4 spec value
Linus Torvalds [Sat, 1 Oct 2022 16:27:18 +0000 (09:27 -0700)]
Merge tag 'media/v6.0-1' of git://git./linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
- some fixes for the v4l2 ioctl handler logic
- a fix for an out of bound access in the DVB videobuf2 handler
- three driver fixes (rkvdec, mediatek/vcodek and uvcvideo)
* tag 'media/v6.0-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
media: rkvdec: Disable H.264 error detection
media: mediatek: vcodec: Drop platform_get_resource(IORESOURCE_IRQ)
media: dvb_vb2: fix possible out of bound access
media: v4l2-ioctl.c: fix incorrect error path
media: v4l2-compat-ioctl32.c: zero buffer passed to v4l2_compat_get_array_args()
media: uvcvideo: Fix InterfaceProtocol for Quanta camera
Linus Torvalds [Sat, 1 Oct 2022 16:13:29 +0000 (09:13 -0700)]
Merge tag 'mm-hotfixes-stable-2022-09-30' of git://git./linux/kernel/git/akpm/mm
Pull more hotfixes from Andrew Morton:
"One MAINTAINERS update, two MM fixes, both cc:stable"
The previous pull wasn't fated to be the last one..
* tag 'mm-hotfixes-stable-2022-09-30' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
damon/sysfs: fix possible memleak on damon_sysfs_add_target
mm: fix BUG splat with kvmalloc + GFP_ATOMIC
MAINTAINERS: drop entry to removed file in ARM/RISCPC ARCHITECTURE
Dmitry Torokhov [Fri, 30 Sep 2022 15:57:18 +0000 (08:57 -0700)]
MIPS: pci: lantiq: switch to using gpiod API
This patch switches the driver from legacy gpio API to the newer
gpiod API.
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Jason A. Donenfeld [Fri, 30 Sep 2022 14:01:38 +0000 (16:01 +0200)]
mips: allow firmware to pass RNG seed to kernel
Nearly all other firmware environments have some way of passing a RNG
seed to initialize the RNG: DTB's rng-seed, EFI's RNG protocol, m68k's
bootinfo block, x86's setup_data, and so forth. This adds something
similar for MIPS, which will allow various firmware environments,
bootloaders, and hypervisors to pass an RNG seed to initialize the
kernel's RNG.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Sami Tolvanen [Fri, 30 Sep 2022 20:33:10 +0000 (20:33 +0000)]
Makefile.extrawarn: Move -Wcast-function-type-strict to W=1
We enable -Wcast-function-type globally in the kernel to warn about
mismatching types in function pointer casts. Compilers currently
warn only about ABI incompability with this flag, but Clang 16 will
enable a stricter version of the check by default that checks for an
exact type match. This will be very noisy in the kernel, so disable
-Wcast-function-type-strict without W=1 until the new warnings have
been addressed.
Cc: stable@vger.kernel.org
Link: https://reviews.llvm.org/D134831
Link: https://github.com/ClangBuiltLinux/linux/issues/1724
Suggested-by: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220930203310.4010564-1-samitolvanen@google.com
Levi Yun [Mon, 26 Sep 2022 16:06:11 +0000 (16:06 +0000)]
damon/sysfs: fix possible memleak on damon_sysfs_add_target
When damon_sysfs_add_target couldn't find proper task, New allocated
damon_target structure isn't registered yet, So, it's impossible to free
new allocated one by damon_sysfs_destroy_targets.
By calling damon_add_target as soon as allocating new target, Fix this
possible memory leak.
Link: https://lkml.kernel.org/r/20220926160611.48536-1-sj@kernel.org
Fixes: a61ea561c871 ("mm/damon/sysfs: link DAMON for virtual address spaces monitoring")
Signed-off-by: Levi Yun <ppbuk5246@gmail.com>
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: SeongJae Park <sj@kernel.org>
Cc: <stable@vger.kernel.org> [5.17.x]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Florian Westphal [Mon, 26 Sep 2022 15:16:50 +0000 (17:16 +0200)]
mm: fix BUG splat with kvmalloc + GFP_ATOMIC
Martin Zaharinov reports BUG with 5.19.10 kernel:
kernel BUG at mm/vmalloc.c:2437!
invalid opcode: 0000 [#1] SMP
CPU: 28 PID: 0 Comm: swapper/28 Tainted: G W O 5.19.9 #1
[..]
RIP: 0010:__get_vm_area_node+0x120/0x130
__vmalloc_node_range+0x96/0x1e0
kvmalloc_node+0x92/0xb0
bucket_table_alloc.isra.0+0x47/0x140
rhashtable_try_insert+0x3a4/0x440
rhashtable_insert_slow+0x1b/0x30
[..]
bucket_table_alloc uses kvzalloc(GPF_ATOMIC). If kmalloc fails, this now
falls through to vmalloc and hits code paths that assume GFP_KERNEL.
Link: https://lkml.kernel.org/r/20220926151650.15293-1-fw@strlen.de
Fixes: a421ef303008 ("mm: allow !GFP_KERNEL allocations for kvmalloc")
Signed-off-by: Florian Westphal <fw@strlen.de>
Suggested-by: Michal Hocko <mhocko@suse.com>
Link: https://lore.kernel.org/linux-mm/Yy3MS2uhSgjF47dy@pc636/T/#t
Acked-by: Michal Hocko <mhocko@suse.com>
Reported-by: Martin Zaharinov <micron10@gmail.com>
Cc: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Lukas Bulwahn [Mon, 19 Sep 2022 07:52:55 +0000 (09:52 +0200)]
MAINTAINERS: drop entry to removed file in ARM/RISCPC ARCHITECTURE
Commit
c1fe8d054c0a ("ARM: riscpc: use GENERIC_IRQ_MULTI_HANDLER") removes
arch/arm/include/asm/hardware/entry-macro-iomd.S, but missed to adjust
MAINTAINERS.
Hence, ./scripts/get_maintainer.pl --self-test=patterns complains about a
broken reference.
Drop the file entry to the removed file in ARM/RISCPC ARCHITECTURE.
Link: https://lkml.kernel.org/r/20220919075255.386-1-lukas.bulwahn@gmail.com
Fixes: c1fe8d054c0a ("ARM: riscpc: use GENERIC_IRQ_MULTI_HANDLER")
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Russell King <linux@armlinux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linus Torvalds [Fri, 30 Sep 2022 23:25:52 +0000 (16:25 -0700)]
Merge tag 'drm-fixes-2022-10-01' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Daniel Vetter:
"Some last minute amd fixes:
- VCN 4.x and GC 11.x fixes, mostly around fw"
* tag 'drm-fixes-2022-10-01' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu/gfx11: switch to amdgpu_gfx_rlc_init_microcode
drm/amdgpu: add helper to init rlc firmware
drm/amdgpu: add helper to init rlc fw in header v2_4
drm/amdgpu: add helper to init rlc fw in header v2_3
drm/amdgpu: add helper to init rlc fw in header v2_2
drm/amdgpu: add helper to init rlc fw in header v2_1
drm/amdgpu: add helper to init rlc fw in header v2_0
drm/amdgpu: save rlcv/rlcp ucode version in amdgpu_gfx
drm/amdgpu: Enable sram on vcn_4_0_2
drm/amdgpu: Enable VCN DPG for GC11_0_1
Linus Torvalds [Fri, 30 Sep 2022 23:19:41 +0000 (16:19 -0700)]
Merge tag 'clk-fixes-for-linus' of git://git./linux/kernel/git/clk/linux
Pull clk driver fixes from Stephen Boyd:
"Here's the last batch of clk driver fixes for this release.
These patches fix serious problems, for example, i.MX has an issue
where changing the NAND clk frequency hangs the system. On Allwinner
H6 the GPU is being overclocked which could lead to long term hardware
damage.
And finally on some Broadcom SoCs the serial console stopped working
because the clk tree hierarchy description got broken by an
inadvertant DT node name change. That's fixed by using
'clock-output-names' to generate a stable and unique name for clks so
the framework can properly link things up.
There's also a couple build fixes in here. One to fix CONFIG_OF=n
builds and one to avoid an array out of bounds bug that happens during
clk registration on microchip. I hope that KASAN would have found that
OOB problem, but probably KASAN wasn't attempted. Instead LLVM/clang
compilation caused an oops, while GCC didn't"
* tag 'clk-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux:
clk: imx93: drop of_match_ptr
clk: iproc: Do not rely on node name for correct PLL setup
clk: sunxi-ng: h6: Fix default PLL GPU rate
clk: imx: imx6sx: remove the SET_RATE_PARENT flag for QSPI clocks
clk: microchip: mpfs: make the rtc's ahb clock critical
clk: microchip: mpfs: fix clk_cfg array bounds violation
clk: ingenic-tcu: Properly enable registers before accessing timers
Linus Torvalds [Fri, 30 Sep 2022 23:03:19 +0000 (16:03 -0700)]
Merge tag 'perf-tools-fixes-for-v6.0-2022-09-29' of git://git./linux/kernel/git/acme/linux
Pull perf tools fixes from Arnaldo Carvalho de Melo:
- Fail the 'perf test record' entry on error, fixing a regression where
just setup stuff like allocating memory and not the actual things
being tested failed.
- Fixup disabling of -Wdeprecated-declarations for the python scripting
engine, the previous attempt had a brown paper bag thinko.
- Fix branch stack sampling test to include sanity check for branch
filter on PowerPC.
- Update is_ignored_symbol function to match the kernel ignored list,
fixing running the 'perf test' entry that compares resolving symbols
from kallsyms to resolving from vmlinux.
- Augment the data source type with ARM's neoverse_spe list, the
previous code was limited in its search resolving the data source.
- Fix some clang 5 variable set but unused cases.
- Get a perf cgroup more portably in BPF as the
__builtin_preserve_enum_value builtin is not available in older
versions of clang. In those cases we can forgo BPF's CO-RE (Compile
Once, Run Everywhere).
- More Fixes for Intel's hybrid CPU model.
* tag 'perf-tools-fixes-for-v6.0-2022-09-29' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux:
perf build: Fixup disabling of -Wdeprecated-declarations for the python scripting engine
perf tests mmap-basic: Remove unused variable to address clang 15 warning
perf parse-events: Ignore clang 15 warning about variable set but unused in bison produced code
perf tests record: Fail the test if the 'errs' counter is not zero
perf test: Fix test case 87 ("perf record tests") for hybrid systems
perf arm-spe: augment the data source type with neoverse_spe list
perf tests vmlinux-kallsyms: Update is_ignored_symbol function to match the kernel ignored list
perf tests powerpc: Fix branch stack sampling test to include sanity check for branch filter
perf parse-events: Remove "not supported" hybrid cache events
perf print-events: Fix "perf list" can not display the PMU prefix for some hybrid cache events
perf tools: Get a perf cgroup more portably in BPF
Linus Torvalds [Fri, 30 Sep 2022 22:49:13 +0000 (15:49 -0700)]
Merge tag 'for-linus-6.0' of git://git./virt/kvm/kvm
Pull kvm fixes from Paolo Bonzini:
"A small fix to the reported set of supported CPUID bits, and selftests
fixes:
- Skip tests that require EPT when it is not available
- Do not hang when a test fails with an empty stack trace
- avoid spurious failure when running access_tracking_perf_test in a
KVM guest
- work around GCC's tendency to optimize loops into mem*() functions,
which breaks because the guest code in selftests cannot call into
PLTs
- fix -Warray-bounds error in fix_hypercall_test"
* tag 'for-linus-6.0' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: selftests: Compare insn opcodes directly in fix_hypercall_test
KVM: selftests: Implement memcmp(), memcpy(), and memset() for guest use
KVM: x86: Hide IA32_PLATFORM_DCA_CAP[31:0] from the guest
KVM: selftests: Gracefully handle empty stack traces
KVM: selftests: replace assertion with warning in access_tracking_perf_test
KVM: selftests: Skip tests that require EPT when it is not available
Daniel Vetter [Fri, 30 Sep 2022 21:10:55 +0000 (23:10 +0200)]
Merge tag 'amd-drm-fixes-6.0-2022-09-30-1' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.0-2022-09-30-1:
amdgpu:
- VCN 4.x fixes
- RLC fixes for GC 11.x
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220930210454.542719-1-alexander.deucher@amd.com
Hawking Zhang [Thu, 15 Sep 2022 16:48:27 +0000 (00:48 +0800)]
drm/amdgpu/gfx11: switch to amdgpu_gfx_rlc_init_microcode
switch to common helper to initialize rlc firmware
for gfx11
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Hawking Zhang [Thu, 15 Sep 2022 16:21:50 +0000 (00:21 +0800)]
drm/amdgpu: add helper to init rlc firmware
To initialzie rlc firmware according to rlc
firmware header version
v2: squash in backwards compat fix
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Hawking Zhang [Wed, 21 Sep 2022 13:55:52 +0000 (21:55 +0800)]
drm/amdgpu: add helper to init rlc fw in header v2_4
To initialize rlc firmware in header v2_4
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Hawking Zhang [Wed, 21 Sep 2022 13:53:52 +0000 (21:53 +0800)]
drm/amdgpu: add helper to init rlc fw in header v2_3
To initialize rlc firmware in header v2_3
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Hawking Zhang [Wed, 21 Sep 2022 13:52:31 +0000 (21:52 +0800)]
drm/amdgpu: add helper to init rlc fw in header v2_2
To initialize rlc firmware in header v2_2
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Hawking Zhang [Wed, 21 Sep 2022 13:50:33 +0000 (21:50 +0800)]
drm/amdgpu: add helper to init rlc fw in header v2_1
To initialize rlc firmware in header v2_1
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Hawking Zhang [Wed, 21 Sep 2022 13:48:27 +0000 (21:48 +0800)]
drm/amdgpu: add helper to init rlc fw in header v2_0
To initialize rlc firmware in header v2_0
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Hawking Zhang [Tue, 13 Sep 2022 11:18:25 +0000 (19:18 +0800)]
drm/amdgpu: save rlcv/rlcp ucode version in amdgpu_gfx
cache rlcv/rlcvp ucode version info in amdgpu_gfx
structure
Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Likun Gao <Likun.Gao@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Rafael J. Wysocki [Fri, 30 Sep 2022 18:52:39 +0000 (20:52 +0200)]
Merge branches 'acpi-properties', 'acpi-tables', 'acpi-x86' and 'acpi-soc'
Merge changes related to ACPI data-only tables handling and ACPI device
properties management, x86-specific ACPI code changes and ACPI SoC driver
changes for 6.1-rc1:
- Clean up the ACPI LPSS (Intel SoC) driver (Andy Shevchenko).
- Add a quirk for Dell Inspiron 14 2-in-1 for StorageD3Enable (Mario
Limonciello).
- Drop unused dev_fmt() and redundant 'HMAT' prefix from the HMAT
parsing code (Liu Shixin).
- Make ACPI FPDT parsing code avoid calling acpi_os_map_memory() on
invalid physical addresses (Hans de Goede).
- Silence missing-declarations warning related to Apple device
properties management (Lukas Wunner).
* acpi-properties:
ACPI: property: Silence missing-declarations warning in apple.c
* acpi-tables:
ACPI: HMAT: Drop unused dev_fmt() and redundant 'HMAT' prefix
ACPI: tables: FPDT: Don't call acpi_os_map_memory() on invalid phys address
* acpi-x86:
ACPI: x86: Add a quirk for Dell Inspiron 14 2-in-1 for StorageD3Enable
* acpi-soc:
ACPI: LPSS: Deduplicate skipping device in acpi_lpss_create_device()
ACPI: LPSS: Replace loop with first entry retrieval
Andy Shevchenko [Mon, 29 Aug 2022 14:11:29 +0000 (17:11 +0300)]
ACPI: LPSS: Deduplicate skipping device in acpi_lpss_create_device()
Add a new label to deduplicate skipping device code in the
acpi_lpss_create_device(). No functional change intended.
While at it, convert the last conditional to use the classical
pattern, i.e.
if (err)
...handle err...
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Andy Shevchenko [Mon, 29 Aug 2022 14:11:28 +0000 (17:11 +0300)]
ACPI: LPSS: Replace loop with first entry retrieval
After the commit
6505e452371d ("ACPI: LPSS: Use the helper
acpi_dev_get_memory_resources()") the list is empty or
contains only resource of IORESOURCE_MEM type. Hence, no
need to check for the type, and since we break after the
first found, no need to iterate over full list. That said,
replace loop with first entry retrieval.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Rafael J. Wysocki [Fri, 30 Sep 2022 18:28:22 +0000 (20:28 +0200)]
Merge branches 'acpi-scan', 'acpi-bus' and 'acpi-platform'
Merge changes related to ACPI device enumeration and ACPI support for
platform devices for 6.1-rc1:
- Clean up ACPI platform devices support code (Andy Shevchenko, John
Garry).
- Clean up ACPI bus management code (Andy Shevchenko, ye xingchen).
- Add support for multiple DMA windows with different offsets to the
ACPI device enumeration code and use it on LoongArch (Jianmin Lv).
* acpi-scan:
LoongArch: Use acpi_arch_dma_setup() and remove ARCH_HAS_PHYS_TO_DMA
ACPI: scan: Support multiple DMA windows with different offsets
* acpi-bus:
ACPI: bus: Refactor ACPI matching functions for better readability
ACPI: bus: Drop kernel doc annotation from acpi_bus_notify()
ACPI: bus: Remove the unneeded result variable
* acpi-platform:
ACPI: platform: Use PLATFORM_DEVID_NONE in acpi_create_platform_device()
ACPI: platform: Sort forbidden_id_list[] in ascending order
ACPI: platform: Use sizeof(*pointer) instead of sizeof(type)
ACPI: platform: Remove redundant print on -ENOMEM
ACPI: platform: Get rid of redundant 'else'
Rafael J. Wysocki [Fri, 30 Sep 2022 18:17:02 +0000 (20:17 +0200)]
Merge branches 'acpi-resource' and 'acpi-pm'
Merge ACPI resource management and ACPI power management chages for
6.1-rc1:
- Filter out non-memory resources in is_memory(), add a helper
function to find all memory type resources of an ACPI device object
and use that function in 3 places (Heikki Krogerus).
- Add IRQ override quirks for Asus Vivobook K3402ZA/K3502ZA and ASUS
model S5402ZA (Tamim Khan, Kellen Renshaw).
- Fix acpi_dev_state_d0() kerneldoc (Sakari Ailus).
- Fix up suspend-to-idle support on ASUS Rembrandt laptops (Mario
Limonciello).
* acpi-resource:
ACPI: resource: Add ASUS model S5402ZA to quirks
usb: typec: intel_pmc_mux: Use the helper acpi_dev_get_memory_resources()
ACPI: resource: Skip IRQ override on Asus Vivobook K3402ZA/K3502ZA
ACPI: LPSS: Use the helper acpi_dev_get_memory_resources()
ACPI: APD: Use the helper acpi_dev_get_memory_resources()
ACPI: resource: Add helper function acpi_dev_get_memory_resources()
ACPI: resource: Filter out the non memory resources in is_memory()
* acpi-pm:
ACPI: x86: s2idle: Add another ID to s2idle_dmi_table
ACPI: x86: s2idle: Fix a NULL pointer dereference
ACPI: x86: s2idle: Add a quirk for ASUSTeK COMPUTER INC. ROG Flow X13
ACPI: x86: s2idle: Add a quirk for Lenovo Slim 7 Pro 14ARH7
ACPI: x86: s2idle: Add a quirk for ASUS ROG Zephyrus G14
ACPI: x86: s2idle: Add a quirk for ASUS TUF Gaming A17 FA707RE
ACPI: x86: s2idle: Add module parameter to prefer Microsoft GUID
ACPI: x86: s2idle: If a new AMD _HID is missing assume Rembrandt
ACPI: x86: s2idle: Move _HID handling for AMD systems into structures
ACPI: PM: Fix acpi_dev_state_d0() kerneldoc
Rafael J. Wysocki [Fri, 30 Sep 2022 18:05:16 +0000 (20:05 +0200)]
Merge branch 'acpi-dev'
Merge changes regarding the management of ACPI device objects for
6.1-rc1:
- Rename ACPI device object reference counting functions (Rafael
Wysocki).
- Rearrange ACPI device object initialization code (Rafael Wysocki).
- Drop parent field from struct acpi_device (Rafael Wysocki).
- Extend the the int3472-tps68470 driver to support multiple consumers
of a single TPS68470 along with the requisite framework-level
support (Daniel Scally).
* acpi-dev:
platform/x86: int3472: Add board data for Surface Go2 IR camera
platform/x86: int3472: Support multiple gpio lookups in board data
platform/x86: int3472: Support multiple clock consumers
ACPI: bus: Add iterator for dependent devices
ACPI: scan: Add acpi_dev_get_next_consumer_dev()
ACPI: property: Use acpi_dev_parent()
ACPI: Drop redundant acpi_dev_parent() header
ACPI: PM: Fix NULL argument handling in acpi_device_get/set_power()
ACPI: Drop parent field from struct acpi_device
ACPI: scan: Eliminate __acpi_device_add()
ACPI: scan: Rearrange initialization of ACPI device objects
ACPI: scan: Rename acpi_bus_get_parent() and rearrange it
ACPI: Rename acpi_bus_get/put_acpi_device()
Sumeet Pawnikar [Tue, 27 Sep 2022 15:47:09 +0000 (21:17 +0530)]
thermal: core: Increase maximum number of trip points
On one of the Chrome system, if we define more than 12 trip points,
probe for thermal sensor fails with
"int3403 thermal: probe of INTC1046:03 failed with error -22"
and throws an error as
"thermal_sys: Error: Incorrect number of thermal trips".
The thermal_zone_device_register() interface needs maximum
number of trip points supported in a zone as an argument.
This number can't exceed THERMAL_MAX_TRIPS, which is currently
set to 12. To address this issue, THERMAL_MAX_TRIPS value
has to be increased.
This interface also has an argument to specify a mask of trips
which are writable. This mask is defined as an int.
This mask sets the ceiling for increasing maximum number of
supported trips. With the current implementation, maximum number
of trips can be supported is 31.
Also, THERMAL_MAX_TRIPS macro is used in one place only.
So, remove THERMAL_MAX_TRIPS macro and compare num_trips
directly with using a macro BITS_PER_TYPE(int)-1.
Signed-off-by: Sumeet Pawnikar <sumeet.r.pawnikar@intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Orlando Chamberlain [Thu, 29 Sep 2022 11:49:56 +0000 (11:49 +0000)]
efi: Correct Macmini DMI match in uefi cert quirk
It turns out Apple doesn't capitalise the "mini" in "Macmini" in DMI, which
is inconsistent with other model line names.
Correct the capitalisation of Macmini in the quirk for skipping loading
platform certs on T2 Macs.
Currently users get:
------------[ cut here ]------------
[Firmware Bug]: Page fault caused by firmware at PA: 0xffffa30640054000
WARNING: CPU: 1 PID: 8 at arch/x86/platform/efi/quirks.c:735 efi_crash_gracefully_on_page_fault+0x55/0xe0
Modules linked in:
CPU: 1 PID: 8 Comm: kworker/u12:0 Not tainted 5.18.14-arch1-2-t2 #1
4535eb3fc40fd08edab32a509fbf4c9bc52d111e
Hardware name: Apple Inc. Macmini8,1/Mac-
7BA5B2DFE22DDD8C, BIOS 1731.120.10.0.0 (iBridge: 19.16.15071.0.0,0) 04/24/2022
Workqueue: efi_rts_wq efi_call_rts
...
---[ end trace
0000000000000000 ]---
efi: Froze efi_rts_wq and disabled EFI Runtime Services
integrity: Couldn't get size: 0x8000000000000015
integrity: MODSIGN: Couldn't get UEFI db list
efi: EFI Runtime Services are disabled!
integrity: Couldn't get size: 0x8000000000000015
integrity: Couldn't get UEFI dbx list
Fixes: 155ca952c7ca ("efi: Do not import certificates from UEFI Secure Boot for T2 Macs")
Cc: stable@vger.kernel.org
Cc: Aditya Garg <gargaditya08@live.com>
Tested-by: Samuel Jiang <chyishian.jiang@gmail.com>
Signed-off-by: Orlando Chamberlain <redecorating@protonmail.com>
Signed-off-by: Mimi Zohar <zohar@linux.ibm.com>
Linus Torvalds [Fri, 30 Sep 2022 16:41:34 +0000 (09:41 -0700)]
Merge tag 'for_linus' of git://git./linux/kernel/git/mst/vhost
Pull virtio fixes from Michael Tsirkin:
"Some last minute fixes.
The virtio-blk one is the most important one since it was actually
seen in the field, but the rest of them are small and clearly safe,
everything here has been in next for a while"
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vdpa/mlx5: Fix MQ to support non power of two num queues
vduse: prevent uninitialized memory accesses
virtio-blk: Fix WARN_ON_ONCE in virtio_queue_rq()
virtio_test: fixup for vq reset
virtio-crypto: fix memory-leak
vdpa/ifcvf: fix the calculation of queuepair
Linus Torvalds [Fri, 30 Sep 2022 16:33:33 +0000 (09:33 -0700)]
Merge tag 'block-6.0-2022-09-29' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe:
"A single NVMe pull request via Christoph with a few fixes that should
go into the 6.0 release:
- Fix IOC_PR_CLEAR and IOC_PR_RELEASE ioctls for nvme devices
(Michael Kelley)
- Disable Write Zeroes on Phison E3C/E4C (Tina Hsu)"
* tag 'block-6.0-2022-09-29' of git://git.kernel.dk/linux:
nvme-pci: disable Write Zeroes on Phison E3C/E4C
nvme: Fix IOC_PR_CLEAR and IOC_PR_RELEASE ioctls for nvme devices
Linus Torvalds [Fri, 30 Sep 2022 16:28:39 +0000 (09:28 -0700)]
Merge tag 'io_uring-6.0-2022-09-29' of git://git.kernel.dk/linux
Pull io_uring fixes from Jens Axboe:
"Two fixes that should go into 6.0:
- Tweak the single issuer logic to register the task at creation,
rather than at first submit. SINGLE_ISSUER was added for 6.0, and
after some discussion on this, we decided to make it a bit stricter
while it's still possible to do so (Dylan).
- Stefan from Samba had some doubts on the level triggered poll that
was added for this release. Rather than attempt to mess around with
it now, just do the quick one-liner to disable it for release and
we have time to discuss and change it for 6.1 instead (me)"
* tag 'io_uring-6.0-2022-09-29' of git://git.kernel.dk/linux:
io_uring/poll: disable level triggered poll
io_uring: register single issuer task at creation
Linus Torvalds [Fri, 30 Sep 2022 15:54:14 +0000 (08:54 -0700)]
Merge tag 'pstore-v6.0-rc8' of git://git./linux/kernel/git/kees/linux
Pull pstore revert from Kees Cook:
"A misbehavior with some compression backends in pstore was just
discovered due to the recent crypto acomp migration.
Since we're so close to release, it seems better to just simply revert
it, and we can figure out what's going on without leaving it broken
for a release.
- Revert crypto acomp migration (Guilherme G. Piccoli)"
* tag 'pstore-v6.0-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
Revert "pstore: migrate to crypto acomp interface"
Linus Torvalds [Fri, 30 Sep 2022 15:30:10 +0000 (08:30 -0700)]
Merge tag 'gpio-fixes-for-v6.0' of git://git./linux/kernel/git/brgl/linux
Pull gpio fixes from Bartosz Golaszewski:
"One more fix for the upcoming release:
- fix the check for pwm support on non-A8K platforms in gpio-mvebu"
* tag 'gpio-fixes-for-v6.0' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux:
gpio: mvebu: Fix check for pwm support on non-A8K platforms
Guilherme G. Piccoli [Thu, 29 Sep 2022 21:55:15 +0000 (18:55 -0300)]
Revert "pstore: migrate to crypto acomp interface"
This reverts commit
e4f0a7ec586b7644107839f5394fb685cf1aadcc.
When using this new interface, both efi_pstore and ramoops
backends are unable to properly decompress dmesg if using
zstd, lz4 and lzo algorithms (and maybe more). It does succeed
with deflate though.
The message observed in the kernel log is:
[2.328828] pstore: crypto_acomp_decompress failed, ret = -22!
The pstore infrastructure is able to collect the dmesg with
both backends tested, but since decompression fails it's
unreadable. With this revert everything is back to normal.
Fixes: e4f0a7ec586b ("pstore: migrate to crypto acomp interface")
Cc: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220929215515.276486-1-gpiccoli@igalia.com
Linus Torvalds [Fri, 30 Sep 2022 15:12:04 +0000 (08:12 -0700)]
Merge tag 'drm-fixes-2022-09-30-1' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Last set of fixes for 6.0 hopefully - minor bridge fixes, i915 fixes,
and a bunch of amdgpu fixes for new IP blocks, along with a couple of
regression fixes. Should be all set for merge window next week.
amdgpu:
- GC 11.x fixes
- SMU 13.x fixes
- DCN 3.1.4 fixes
- DCN 3.2.x fixes
- GC 9.x fix
- Fence fix
- SR-IOV supend/resume fix
- PSR regression fix
i915:
- Restrict forced preemption to the active context
- Restrict perf_limit_reasons to the supported platforms - gen11+
bridge:
- analogix: Revert earlier suspend fix
- lt8912b: Fix corrupt display output"
* tag 'drm-fixes-2022-09-30-1' of git://anongit.freedesktop.org/drm/drm: (26 commits)
drm/amd/display: Prevent OTG shutdown during PSR SU
drm/i915/gt: Perf_limit_reasons are only available for Gen11+
drm/amdgpu: Add amdgpu suspend-resume code path under SRIOV
drm/amdgpu: Remove fence_process in count_emitted
drm/amdgpu: Correct the position in patch_cond_exec
drm/amd/display: fill in clock values when DPM is not enabled
drm/amd/display: Avoid unnecessary pixel rate divider programming
drm/amd/display: Remove assert for odm transition case
drm/amd/display: Fix typo in get_pixel_rate_div
drm/amd/display: Fix audio on display after unplugging another
drm/amd/display: Add explicit FIFO disable for DP blank
drm/amd/display: Wrap OTG disable workaround with FIFO control
drm/amd/display: Do DIO FIFO enable after DP video stream enable
drm/amd/display: Update DCN32 to use new SR latencies
drm/amd/display: Avoid avoid unnecessary pixel rate divider programming
drm/amdkfd: fix dropped interrupt in kfd_int_process_v11
drm/amdgpu: pass queue size and is_aql_queue to MES
drm/amdkfd: fix MQD init for GFX11 in init_mqd
drm/amd/pm: use adverse selection for dpm features unsupported by driver
drm/amd/pm: enable gfxoff feature for SMU 13.0.0
...
Tiezhu Yang [Thu, 29 Sep 2022 07:39:58 +0000 (15:39 +0800)]
MIPS: Simplify __bswapdi2() and __bswapsi2()
Use macro definitions ___constant_swab64 and ___constant_swab32
to simplify __bswapdi2() and __bswapsi2().
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Tiezhu Yang [Thu, 29 Sep 2022 07:39:57 +0000 (15:39 +0800)]
MIPS: Silence missing prototype warning
Silence the following two warnings when make W=1:
CC arch/mips/lib/bswapsi.o
arch/mips/lib/bswapsi.c:5:22: warning: no previous prototype for '__bswapsi2' [-Wmissing-prototypes]
unsigned int notrace __bswapsi2(unsigned int u)
^~~~~~~~~~
CC arch/mips/lib/bswapdi.o
arch/mips/lib/bswapdi.c:5:28: warning: no previous prototype for '__bswapdi2' [-Wmissing-prototypes]
unsigned long long notrace __bswapdi2(unsigned long long u)
^~~~~~~~~~
AR arch/mips/lib/built-in.a
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Lukas Bulwahn [Thu, 29 Sep 2022 10:14:51 +0000 (12:14 +0200)]
mips: update config files
Clean up config files by:
- removing configs that were deleted in the past
- removing configs not in tree and without recently pending patches
- adding new configs that are replacements for old configs in the file
For some detailed information, see Link.
Link: https://lore.kernel.org/kernel-janitors/20220929090645.1389-1-lukas.bulwahn@gmail.com/
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Sean Christopherson [Wed, 28 Sep 2022 23:36:47 +0000 (23:36 +0000)]
KVM: selftests: Compare insn opcodes directly in fix_hypercall_test
Directly compare the expected versus observed hypercall instructions when
verifying that KVM patched in the native hypercall (FIX_HYPERCALL_INSN
quirk enabled). gcc rightly complains that doing a 4-byte memcpy() with
an "unsigned char" as the source generates an out-of-bounds accesses.
Alternatively, "exp" and "obs" could be declared as 3-byte arrays, but
there's no known reason to copy locally instead of comparing directly.
In function ‘assert_hypercall_insn’,
inlined from ‘guest_main’ at x86_64/fix_hypercall_test.c:91:2:
x86_64/fix_hypercall_test.c:63:9: error: array subscript ‘unsigned int[0]’
is partly outside array bounds of ‘unsigned char[1]’ [-Werror=array-bounds]
63 | memcpy(&exp, exp_insn, sizeof(exp));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
x86_64/fix_hypercall_test.c: In function ‘guest_main’:
x86_64/fix_hypercall_test.c:42:22: note: object ‘vmx_hypercall_insn’ of size 1
42 | extern unsigned char vmx_hypercall_insn;
| ^~~~~~~~~~~~~~~~~~
x86_64/fix_hypercall_test.c:25:22: note: object ‘svm_hypercall_insn’ of size 1
25 | extern unsigned char svm_hypercall_insn;
| ^~~~~~~~~~~~~~~~~~
In function ‘assert_hypercall_insn’,
inlined from ‘guest_main’ at x86_64/fix_hypercall_test.c:91:2:
x86_64/fix_hypercall_test.c:64:9: error: array subscript ‘unsigned int[0]’
is partly outside array bounds of ‘unsigned char[1]’ [-Werror=array-bounds]
64 | memcpy(&obs, obs_insn, sizeof(obs));
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
x86_64/fix_hypercall_test.c: In function ‘guest_main’:
x86_64/fix_hypercall_test.c:25:22: note: object ‘svm_hypercall_insn’ of size 1
25 | extern unsigned char svm_hypercall_insn;
| ^~~~~~~~~~~~~~~~~~
x86_64/fix_hypercall_test.c:42:22: note: object ‘vmx_hypercall_insn’ of size 1
42 | extern unsigned char vmx_hypercall_insn;
| ^~~~~~~~~~~~~~~~~~
cc1: all warnings being treated as errors
make: *** [../lib.mk:135: tools/testing/selftests/kvm/x86_64/fix_hypercall_test] Error 1
Fixes: 6c2fa8b20d0c ("selftests: KVM: Test KVM_X86_QUIRK_FIX_HYPERCALL_INSN")
Cc: Oliver Upton <oliver.upton@linux.dev>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Oliver Upton <oliver.upton@linux.dev>
Message-Id: <
20220928233652.783504-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Sean Christopherson [Wed, 28 Sep 2022 23:36:46 +0000 (23:36 +0000)]
KVM: selftests: Implement memcmp(), memcpy(), and memset() for guest use
Implement memcmp(), memcpy(), and memset() to override the compiler's
built-in versions in order to guarantee that the compiler won't generate
out-of-line calls to external functions via the PLT. This allows the
helpers to be safely used in guest code, as KVM selftests don't support
dynamic loading of guest code.
Steal the implementations from the kernel's generic versions, sans the
optimizations in memcmp() for unaligned accesses.
Put the utilities in a separate compilation unit and build with
-ffreestanding to fudge around a gcc "feature" where it will optimize
memset(), memcpy(), etc... by generating a recursive call. I.e. the
compiler optimizes itself into infinite recursion. Alternatively, the
individual functions could be tagged with
optimize("no-tree-loop-distribute-patterns"), but using "optimize" for
anything but debug is discouraged, and Linus NAK'd the use of the flag
in the kernel proper[*].
https://lore.kernel.org/lkml/CAHk-=wik-oXnUpfZ6Hw37uLykc-_P0Apyn2XuX-odh-3Nzop8w@mail.gmail.com
Cc: Andrew Jones <andrew.jones@linux.dev>
Cc: Anup Patel <anup@brainfault.org>
Cc: Atish Patra <atishp@atishpatra.org>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Janosch Frank <frankja@linux.ibm.com>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <
20220928233652.783504-2-seanjc@google.com>
Reviewed-by: Andrew Jones <andrew.jones@linux.dev>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Jim Mattson [Thu, 22 Sep 2022 23:18:54 +0000 (16:18 -0700)]
KVM: x86: Hide IA32_PLATFORM_DCA_CAP[31:0] from the guest
The only thing reported by CPUID.9 is the value of
IA32_PLATFORM_DCA_CAP[31:0] in EAX. This MSR doesn't even exist in the
guest, since CPUID.1:ECX.DCA[bit 18] is clear in the guest.
Clear CPUID.9 in KVM_GET_SUPPORTED_CPUID.
Fixes: 24c82e576b78 ("KVM: Sanitize cpuid")
Signed-off-by: Jim Mattson <jmattson@google.com>
Message-Id: <
20220922231854.249383-1-jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
David Matlack [Thu, 22 Sep 2022 23:17:23 +0000 (16:17 -0700)]
KVM: selftests: Gracefully handle empty stack traces
Bail out of test_dump_stack() if the stack trace is empty rather than
invoking addr2line with zero addresses. The problem with the latter is
that addr2line will block waiting for addresses to be passed in via
stdin, e.g. if running a selftest from an interactive terminal.
Opportunistically fix up the comment that mentions skipping 3 frames
since only 2 are skipped in the code.
Cc: Vipin Sharma <vipinsh@google.com>
Cc: Sean Christopherson <seanjc@google.com>
Signed-off-by: David Matlack <dmatlack@google.com>
Message-Id: <
20220922231724.
3560211-1-dmatlack@google.com>
[Small tweak to keep backtrace() call close to if(). - Paolo]
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Emanuele Giuseppe Esposito [Mon, 26 Sep 2022 08:29:23 +0000 (04:29 -0400)]
KVM: selftests: replace assertion with warning in access_tracking_perf_test
Page_idle uses {ptep/pmdp}_clear_young_notify which in turn calls
the mmu notifier callback ->clear_young(), which purposefully
does not flush the TLB.
When running the test in a nested guest, point 1. of the test
doc header is violated, because KVM TLB is unbounded by size
and since no flush is forced, KVM does not update the sptes
accessed/idle bits resulting in guest assertion failure.
More precisely, only the first ACCESS_WRITE in run_test() actually
makes visible changes, because sptes are created and the accessed
bit is set to 1 (or idle bit is 0). Then the first mark_memory_idle()
passes since access bit is still one, and sets all pages as idle
(or not accessed). When the next write is performed, the update
is not flushed therefore idle is still 1 and next mark_memory_idle()
fails.
Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Message-Id: <
20220926082923.299554-1-eesposit@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Kees Cook [Fri, 30 Sep 2022 05:57:43 +0000 (22:57 -0700)]
hardening: Remove Clang's enable flag for -ftrivial-auto-var-init=zero
Now that Clang's -enable-trivial-auto-var-init-zero-knowing-it-will-be-removed-from-clang
option is no longer required, remove it from the command line. Clang 16
and later will warn when it is used, which will cause Kconfig to think
it can't use -ftrivial-auto-var-init=zero at all. Check for whether it
is required and only use it when so.
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: linux-kbuild@vger.kernel.org
Cc: llvm@lists.linux.dev
Cc: stable@vger.kernel.org
Fixes: f02003c860d9 ("hardening: Avoid harmless Clang option under CONFIG_INIT_STACK_ALL_ZERO")
Signed-off-by: Kees Cook <keescook@chromium.org>
Bart Van Assche [Tue, 30 Aug 2022 20:58:42 +0000 (13:58 -0700)]
sparc: Unbreak the build
Fix the following build errors:
arch/sparc/mm/srmmu.c: In function ‘smp_flush_page_for_dma’:
arch/sparc/mm/srmmu.c:1639:13: error: cast between incompatible function types from ‘void (*)(long unsigned int)’ to ‘void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)’ [-Werror=cast-function-type]
1639 | xc1((smpfunc_t) local_ops->page_for_dma, page);
| ^
arch/sparc/mm/srmmu.c: In function ‘smp_flush_cache_mm’:
arch/sparc/mm/srmmu.c:1662:29: error: cast between incompatible function types from ‘void (*)(struct mm_struct *)’ to ‘void (*)(long unsigned int, long unsigned int, long unsigned int, long unsigned int, long unsigned int)’ [-Werror=cast-function-type]
1662 | xc1((smpfunc_t) local_ops->cache_mm, (unsigned long) mm);
|
[ ... ]
Compile-tested only.
Fixes: 552a23a0e5d0 ("Makefile: Enable -Wcast-function-type")
Cc: stable@vger.kernel.org
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Tested-by: Andreas Larsson <andreas@gaisler.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220830205854.1918026-1-bvanassche@acm.org
Lukas Bulwahn [Thu, 29 Sep 2022 20:39:03 +0000 (22:39 +0200)]
binfmt: remove taso from linux_binprm struct
With commit
987f20a9dcce ("a.out: Remove the a.out implementation"), the
use of the special taso flag for alpha architectures in the linux_binprm
struct is gone.
Remove the definition of taso in the linux_binprm struct.
No functional change.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20220929203903.9475-1-lukas.bulwahn@gmail.com
Dave Airlie [Thu, 29 Sep 2022 23:28:00 +0000 (09:28 +1000)]
Merge tag 'drm-intel-fixes-2022-09-29' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
- Restrict forced preemption to the active context (Chris)
- Restrict perf_limit_reasons to the supported platforms - gen11+ (Ashutosh)
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/YzXAkH1a32pYJD33@intel.com
Dave Airlie [Thu, 29 Sep 2022 23:03:03 +0000 (09:03 +1000)]
Merge tag 'amd-drm-fixes-6.0-2022-09-29' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes
amd-drm-fixes-6.0-2022-09-29:
amdgpu:
- GC 11.x fixes
- SMU 13.x fixes
- DCN 3.1.4 fixes
- DCN 3.2.x fixes
- GC 9.x fix
- Fence fix
- SR-IOV supend/resume fix
- PSR regression fix
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220929144003.8363-1-alexander.deucher@amd.com
Dave Airlie [Thu, 29 Sep 2022 22:50:29 +0000 (08:50 +1000)]
Merge tag 'drm-misc-fixes-2022-09-29' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Short summary of fixes pull:
* bridge/analogix: Revert earlier suspend fix
* bridge/lt8912b: Fix corrupt display output
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/YzWvHhaqHhYirn4L@linux-uq9g
Linus Torvalds [Thu, 29 Sep 2022 21:37:45 +0000 (14:37 -0700)]
Merge tag 'pull-fixes' of git://git./linux/kernel/git/viro/vfs
Pull coredump fix from Al Viro:
"Fix for breakage in dump_user_range()"
* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
[coredump] don't use __kernel_write() on kmap_local_page()
David Hildenbrand [Fri, 23 Sep 2022 11:34:25 +0000 (13:34 +0200)]
checkpatch: warn on usage of VM_BUG_ON() and other BUG variants
checkpatch does not point out that VM_BUG_ON() and friends should be
avoided, however, Linus notes:
VM_BUG_ON() has the exact same semantics as BUG_ON. It is literally
no different, the only difference is "we can make the code smaller
because these are less important". [1]
So let's warn on VM_BUG_ON() and other BUG variants as well. While at it,
make it clearer that the kernel really shouldn't be crashed.
As there are some subsystem BUG macros that actually don't end up crashing
the kernel -- for example, KVM_BUG_ON() -- exclude these manually.
[1] https://lore.kernel.org/r/CAHk-=wg40EAZofO16Eviaj7mfqDhZ2gVEbvfsMf6gYzspRjYvw@mail.gmail.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20220923113426.52871-3-david@redhat.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
David Hildenbrand [Fri, 23 Sep 2022 11:34:24 +0000 (13:34 +0200)]
coding-style.rst: document BUG() and WARN() rules ("do not crash the kernel")
Linus notes [1] that the introduction of new code that uses VM_BUG_ON()
is just as bad as BUG_ON(), because it will crash the kernel on
distributions that enable CONFIG_DEBUG_VM (like Fedora):
VM_BUG_ON() has the exact same semantics as BUG_ON. It is literally
no different, the only difference is "we can make the code smaller
because these are less important". [2]
This resulted in a more generic discussion about usage of BUG() and
friends. While there might be corner cases that still deserve a BUG_ON(),
most BUG_ON() cases should simply use WARN_ON_ONCE() and implement a
recovery path if reasonable:
The only possible case where BUG_ON can validly be used is "I have
some fundamental data corruption and cannot possibly return an
error". [2]
As a very good approximation is the general rule:
"absolutely no new BUG_ON() calls _ever_" [2]
... not even if something really shouldn't ever happen and is merely for
documenting that an invariant always has to hold. However, there are sill
exceptions where BUG_ON() may be used:
If you have a "this is major internal corruption, there's no way we can
continue", then BUG_ON() is appropriate. [3]
There is only one good BUG_ON():
Now, that said, there is one very valid sub-form of BUG_ON():
BUILD_BUG_ON() is absolutely 100% fine. [2]
While WARN will also crash the machine with panic_on_warn set, that's
exactly to be expected:
So we have two very different cases: the "virtual machine with good
logging where a dead machine is fine" - use 'panic_on_warn'. And
the actual real hardware with real drivers, running real loads by
users. [4]
The basic idea is that warnings will similarly get reported by users
and be found during testing. However, in contrast to a BUG(), there is a
way to actually influence the expected behavior (e.g., panic_on_warn)
and to eventually keep the machine alive to extract some debug info.
Ingo notes that not all WARN_ON_ONCE cases need recovery. If we don't ever
expect this code to trigger in any case, recovery code is not really
helpful.
I'd prefer to keep all these warnings 'simple' - i.e. no attempted
recovery & control flow, unless we ever expect these to trigger.
[5]
There have been different rules floating around that were never properly
documented. Let's try to clarify.
[1] https://lkml.kernel.org/r/CAHk-=wiEAH+ojSpAgx_Ep=NKPWHU8AdO3V56BXcCsU97oYJ1EA@mail.gmail.com
[2] https://lore.kernel.org/r/CAHk-=wg40EAZofO16Eviaj7mfqDhZ2gVEbvfsMf6gYzspRjYvw@mail.gmail.com
[3] https://lkml.kernel.org/r/CAHk-=wit-DmhMfQErY29JSPjFgebx_Ld+pnerc4J2Ag990WwAA@mail.gmail.com
[4] https://lore.kernel.org/r/CAHk-=wgF7K2gSSpy=m_=K3Nov4zaceUX9puQf1TjkTJLA2XC_g@mail.gmail.com
[5] https://lore.kernel.org/r/YwIW+mVeZoTOxn%2F4@gmail.com
Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/r/20220923113426.52871-2-david@redhat.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Yang Yingliang [Tue, 27 Sep 2022 08:02:15 +0000 (16:02 +0800)]
Documentation: devres: add missing IO helper
Add missing devm_request_free_mem_region() to devres.rst.
It's introduced by commit
0092908d16c6 ("mm: factor out a
devm_request_free_mem_region helper").
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220927080215.1359979-1-yangyingliang@huawei.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Yang Yingliang [Tue, 27 Sep 2022 08:38:19 +0000 (16:38 +0800)]
Documentation: devres: update IRQ helper
devm_irq_sim_init() has been changed to devm_irq_domain_create_sim()
in commit
337cbeb2c13e ("genirq/irq_sim: Simplify the API").
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20220927083819.12484-1-yangyingliang@huawei.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Vernon Yang [Mon, 26 Sep 2022 15:20:32 +0000 (23:20 +0800)]
Documentation/mm: modify page_referenced to folio_referenced
Since commit
b3ac04132c4b ("mm/rmap: Turn page_referenced() into
folio_referenced()") the page_referenced function name was modified,
so fix it up to use the correct one.
Signed-off-by: Vernon Yang <vernon2gm@gmail.com>
Reviewed-by: Mike Rapoport <rppt@linux.ibm.com>
Link: https://lore.kernel.org/r/20220926152032.74621-1-vernon2gm@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Kristen Carlson Accardi [Mon, 26 Sep 2022 21:11:49 +0000 (14:11 -0700)]
Documentation/CoC: Reflect current CoC interpretation and practices
The Code of Conduct interpretation does not reflect the current
practices of the CoC committee or the TAB. Update the documentation
to remove references to initial committees and boot strap periods
since it is past that time, and note that the this document
does serve as the documentation for the CoC committee processes.
Signed-off-by: Kristen Carlson Accardi <kristen@linux.intel.com>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20220926211149.2278214-1-kristen@linux.intel.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Akira Yokosawa [Fri, 16 Sep 2022 10:08:05 +0000 (19:08 +0900)]
docs/doc-guide: Add documentation on SPHINX_IMGMATH
Now that building html docs with math expressions does not need texlive
packages, remove the note on the requirement in the "Sphinx Install"
section.
Instead, add sections of "Math Expressions in HTML" and "Choice of Math
Renderer".
Describe the effect of setting SPHINX_IMGMATH in the latter section.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/a67e3279-6bc7-ee2c-2b49-9275252460b0@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Thorsten Leemhuis [Wed, 28 Sep 2022 13:39:40 +0000 (15:39 +0200)]
docs: process/5.Posting.rst: clarify use of Reported-by: tag
Bring the description on when to use the Reported-by: tag found in
Documentation/process/5.Posting.rst more in line with the description in
Documentation/process/submitting-patches.rst: before this change the two
were contradicting each other, as the latter is way more permissive and
only states '[...] if the bug was reported in private, then ask for
permission first before using the Reported-by tag.'
Signed-off-by: Thorsten Leemhuis <linux@leemhuis.info>
Link: https://lore.kernel.org/r/2fc7162dfb76e04da5ea903c9c170d913e735dad.1664372256.git.linux@leemhuis.info
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Tiezhu Yang [Fri, 16 Sep 2022 09:55:06 +0000 (17:55 +0800)]
docs, kprobes: Fix the wrong location of Kprobes
After commit
22471e1313f2 ("kconfig: use a menu in arch/Kconfig to reduce
clutter"), the location of Kprobes is under "General architecture-dependent
options" rather than "General setup".
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Fixes: 22471e1313f2 ("kconfig: use a menu in arch/Kconfig to reduce clutter")
Link: https://lore.kernel.org/r/1663322106-12178-1-git-send-email-yangtiezhu@loongson.cn
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
projects / platform / kernel / linux-starfive.git / log