New drivers:
- add a driver for the Loongson GPIO controller
- add a driver for the fxl6408 I2C GPIO expander
- add a GPIO module containing code common for Intel Elkhart Lake and
Merrifield platforms
- add a driver for the Intel Elkhart Lake platform reusing the code from
the intel tangier library
GPIOLIB core:
- GPIO ACPI improvements
- simplify gpiochip_add_data_with_keys() fwnode handling
- cleanup header inclusions (remove unneeded ones, order the rest
alphabetically)
- remove duplicate code (reuse krealloc() instead of open-coding it, drop
a duplicated check in gpiod_find_and_request())
- reshuffle the code to remove unnecessary forward declarations
- coding style cleanups and improvements
- add a helper for accessing device fwnodes
- small updates in docs
Driver improvements:
- convert all remaining GPIO irqchip drivers to using immutable irqchips
- drop unnecessary of_match_ptr() macro expansions
- shrink the code in gpio-merrifield significantly by reusing the code from
gpio-tangier + minor tweaks to the driver code
- remove MODULE_LICENSE() from drivers that can only be built-in
- add device-tree support to gpio-loongson1
- use new regmap features in gpio-104-dio-48e and gpio-pcie-idio-24
- minor tweaks and fixes to gpio-xra1403, gpio-sim, gpio-tegra194, gpio-omap,
gpio-aspeed, gpio-raspberrypi-exp
- shrink code in gpio-ich and gpio-pxa
- Kconfig tweak for gpio-pmic-eic-sprd
-----BEGIN PGP SIGNATURE-----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=X+sP
-----END PGP SIGNATURE-----
Merge tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"We have some new drivers, significant refactoring of existing intel
platforms, lots of improvements all around, mass conversion to using
immutable irqchips by drivers that had not been converted individually
yet and some changes in the core library code.
Summary:
New drivers:
- add a driver for the Loongson GPIO controller
- add a driver for the fxl6408 I2C GPIO expander
- add a GPIO module containing code common for Intel Elkhart Lake and
Merrifield platforms
- add a driver for the Intel Elkhart Lake platform reusing the code
from the intel tangier library
GPIOLIB core:
- GPIO ACPI improvements
- simplify gpiochip_add_data_with_keys() fwnode handling
- cleanup header inclusions (remove unneeded ones, order the rest
alphabetically)
- remove duplicate code (reuse krealloc() instead of open-coding it,
drop a duplicated check in gpiod_find_and_request())
- reshuffle the code to remove unnecessary forward declarations
- coding style cleanups and improvements
- add a helper for accessing device fwnodes
- small updates in docs
Driver improvements:
- convert all remaining GPIO irqchip drivers to using immutable
irqchips
- drop unnecessary of_match_ptr() macro expansions
- shrink the code in gpio-merrifield significantly by reusing the
code from gpio-tangier + minor tweaks to the driver code
- remove MODULE_LICENSE() from drivers that can only be built-in
- add device-tree support to gpio-loongson1
- use new regmap features in gpio-104-dio-48e and gpio-pcie-idio-24
- minor tweaks and fixes to gpio-xra1403, gpio-sim, gpio-tegra194,
gpio-omap, gpio-aspeed, gpio-raspberrypi-exp
- shrink code in gpio-ich and gpio-pxa
- Kconfig tweak for gpio-pmic-eic-sprd"
* tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (99 commits)
gpio: gpiolib: Simplify gpiochip_add_data_with_key() fwnode
gpiolib: Add gpiochip_set_data() helper
gpiolib: Move gpiochip_get_data() higher in the code
gpiolib: Check array_info for NULL only once in gpiod_get_array()
gpiolib: Replace open coded krealloc()
gpiolib: acpi: Add a ignore wakeup quirk for Clevo NL5xNU
gpiolib: acpi: Move ACPI device NULL check to acpi_get_driver_gpio_data()
gpiolib: acpi: use the fwnode in acpi_gpiochip_find()
gpio: mm-lantiq: Fix typo in the newly added header filename
sh: mach-x3proto: Add missing #include <linux/gpio/driver.h>
powerpc/40x: Add missing select OF_GPIO_MM_GPIOCHIP
gpio: xlp: Convert to immutable irq_chip
gpio: xilinx: Convert to immutable irq_chip
gpio: xgs-iproc: Convert to immutable irq_chip
gpio: visconti: Convert to immutable irq_chip
gpio: tqmx86: Convert to immutable irq_chip
gpio: thunderx: Convert to immutable irq_chip
gpio: stmpe: Convert to immutable irq_chip
gpio: siox: Convert to immutable irq_chip
gpio: rda: Convert to immutable irq_chip
...
These are various cleanups, fixing a number of uapi header files to no
longer reference CONFIG_* symbols, and one patch that introduces the
new CONFIG_HAS_IOPORT symbol for architectures that provide working
inb()/outb() macros, as a preparation for adding driver dependencies
on those in the following release.
-----BEGIN PGP SIGNATURE-----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=H3k4
-----END PGP SIGNATURE-----
Merge tag 'asm-generic-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic
Pull asm-generic updates from Arnd Bergmann:
"These are various cleanups, fixing a number of uapi header files to no
longer reference CONFIG_* symbols, and one patch that introduces the
new CONFIG_HAS_IOPORT symbol for architectures that provide working
inb()/outb() macros, as a preparation for adding driver dependencies
on those in the following release"
* tag 'asm-generic-6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
Kconfig: introduce HAS_IOPORT option and select it as necessary
scripts: Update the CONFIG_* ignore list in headers_install.sh
pktcdvd: Remove CONFIG_CDROM_PKTCDVD_WCACHE from uapi header
Move bp_type_idx to include/linux/hw_breakpoint.h
Move ep_take_care_of_epollwakeup() to fs/eventpoll.c
Move COMPAT_ATM_ADDPARTY to net/atm/svc.c
still a fair amount going on, including:
- Reorganizing the architecture-specific documentation under
Documentation/arch. This makes the structure match the source directory
and helps to clean up the mess that is the top-level Documentation
directory a bit. This work creates the new directory and moves x86 and
most of the less-active architectures there. The current plan is to move
the rest of the architectures in 6.5, with the patches going through the
appropriate subsystem trees.
- Some more Spanish translations and maintenance of the Italian
translation.
- A new "Kernel contribution maturity model" document from Ted.
- A new tutorial on quickly building a trimmed kernel from Thorsten.
Plus the usual set of updates and fixes.
-----BEGIN PGP SIGNATURE-----
iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAmRGze0PHGNvcmJldEBs
d24ubmV0AAoJEBdDWhNsDH5Y/VsH/RyWqinorRVFZmHqRJMRhR0j7hE2pAgK5prE
dGXYVtHHNQ+25thNaqhZTOLYFbSX6ii2NG7sLRXmyOTGIZrhUCFFXCHkuq4ZUypR
gJpMUiKQVT4dhln3gIZ0k09NSr60gz8UTcq895N9UFpUdY1SCDhbCcLc4uXTRajq
NrdgFaHWRkPb+gBRbXOExYm75DmCC6Ny5AyGo2rXfItV//ETjWIJVQpJhlxKrpMZ
3LgpdYSLhEFFnFGnXJ+EAPJ7gXDi2Tg5DuPbkvJyFOTouF3j4h8lSS9l+refMljN
xNRessv+boge/JAQidS6u8F2m2ESSqSxisv/0irgtKIMJwXaoX4=
=1//8
-----END PGP SIGNATURE-----
Merge tag 'docs-6.4' of git://git.lwn.net/linux
Pull documentation updates from Jonathan Corbet:
"Commit volume in documentation is relatively low this time, but there
is still a fair amount going on, including:
- Reorganize the architecture-specific documentation under
Documentation/arch
This makes the structure match the source directory and helps to
clean up the mess that is the top-level Documentation directory a
bit. This work creates the new directory and moves x86 and most of
the less-active architectures there.
The current plan is to move the rest of the architectures in 6.5,
with the patches going through the appropriate subsystem trees.
- Some more Spanish translations and maintenance of the Italian
translation
- A new "Kernel contribution maturity model" document from Ted
- A new tutorial on quickly building a trimmed kernel from Thorsten
Plus the usual set of updates and fixes"
* tag 'docs-6.4' of git://git.lwn.net/linux: (47 commits)
media: Adjust column width for pdfdocs
media: Fix building pdfdocs
docs: clk: add documentation to log which clocks have been disabled
docs: trace: Fix typo in ftrace.rst
Documentation/process: always CC responsible lists
docs: kmemleak: adjust to config renaming
ELF: document some de-facto PT_* ABI quirks
Documentation: arm: remove stih415/stih416 related entries
docs: turn off "smart quotes" in the HTML build
Documentation: firmware: Clarify firmware path usage
docs/mm: Physical Memory: Fix grammar
Documentation: Add document for false sharing
dma-api-howto: typo fix
docs: move m68k architecture documentation under Documentation/arch/
docs: move parisc documentation under Documentation/arch/
docs: move ia64 architecture docs under Documentation/arch/
docs: Move arc architecture docs under Documentation/arch/
docs: move nios2 documentation under Documentation/arch/
docs: move openrisc documentation under Documentation/arch/
docs: move superh documentation under Documentation/arch/
...
Architecture-specific documentation is being moved into Documentation/arch/
as a way of cleaning up the top-level documentation directory and making
the docs hierarchy more closely match the source hierarchy. Move
Documentation/m68k into arch/ and fix all in-tree references.
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
We introduce a new HAS_IOPORT Kconfig option to indicate support for I/O
Port access. In a future patch HAS_IOPORT=n will disable compilation of
the I/O accessor functions inb()/outb() and friends on architectures
which can not meaningfully support legacy I/O spaces such as s390.
The following architectures do not select HAS_IOPORT:
* ARC
* C-SKY
* Hexagon
* Nios II
* OpenRISC
* s390
* User-Mode Linux
* Xtensa
All other architectures select HAS_IOPORT at least conditionally.
The "depends on" relations on HAS_IOPORT in drivers as well as ifdefs
for HAS_IOPORT specific sections will be added in subsequent patches on
a per subsystem basis.
Co-developed-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Acked-by: Johannes Berg <johannes@sipsolutions.net> # for ARCH=um
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Niklas Schnelle <schnelle@linux.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
- Drop CONFIG_IP_NF_TARGET_CLUSTERIP=m (removed in commit
9db5d918e2 ("netfilter: ip_tables: remove clusterip target")),
- Enable modular build of the Kerberos V mechanism for Secure RPC
(auto-builtin since commit dfe9a12345 ("SUNRPC: Enable
rpcsec_gss_krb5.ko to be built without CRYPTO_DES")),
- Enable modular build of the new Dhrystone benchmark test,
- Drop accidental enablement of CONFIG_PCCARD=y in multi_defconfig.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/2b6d1357f4cb7e23bb2c7a7d39c4486e77e138ad.1678106848.git.geert@linux-m68k.org
The use of the config NO_KERNEL_MSG is long gone. Remove this config from
m68k's debug kernel configuration setup.
Signed-off-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20230320123202.14474-1-lukas.bulwahn@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
__get_kernel_nofault() does copy data in supervisor mode when
forcing a task backtrace log through /proc/sysrq_trigger.
This is expected cause a bus error exception on e.g. NULL
pointer dereferencing when logging a kernel task has no
workqueue associated. This bus error ought to be ignored.
Our 030 bus error handler is ill equipped to deal with this:
Whenever ssw indicates a kernel mode access on a data fault,
we don't even attempt to handle the fault and instead always
send a SEGV signal (or panic). As a result, the check
for exception handling at the fault PC (buried in
send_sig_fault() which gets called from do_page_fault()
eventually) is never used.
In contrast, both 040 and 060 access error handlers do not
care whether a fault happened on supervisor mode access,
and will call do_page_fault() on those, ultimately honoring
the exception table.
Add a check in bus_error030 to call do_page_fault() in case
we do have an entry for the fault PC in our exception table.
I had attempted a fix for this earlier in 2019 that did rely
on testing pagefault_disabled() (see link below) to achieve
the same thing, but this patch should be more generic.
Tested on 030 Atari Falcon.
Reported-by: Eero Tamminen <oak@helsinkinet.fi>
Link: https://lore.kernel.org/r/alpine.LNX.2.21.1904091023540.25@nippy.intranet
Link: https://lore.kernel.org/r/63130691-1984-c423-c1f2-73bfd8d3dcd3@gmail.com
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20230301021107.26307-1-schmitzmic@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
When booting with an initial ramdisk on platforms where physical memory
does not start at address zero (e.g. on Amiga):
initrd: 0ef0602c - 0f800000
Zone ranges:
DMA [mem 0x0000000008000000-0x000000f7ffffffff]
Normal empty
Movable zone start for each node
Early memory node ranges
node 0: [mem 0x0000000008000000-0x000000000f7fffff]
Initmem setup node 0 [mem 0x0000000008000000-0x000000000f7fffff]
Unable to handle kernel access at virtual address (ptrval)
Oops: 00000000
Modules linked in:
PC: [<00201d3c>] memcmp+0x28/0x56
As phys_to_virt() relies on m68k_memoffset and module_fixup(), it must
not be called before paging_init(). Hence postpone the phys_to_virt
handling for the initial ramdisk until after calling paging_init().
While at it, reduce #ifdef clutter by using IS_ENABLED() instead.
Fixes: 376e3fdecb ("m68k: Enable memtest functionality")
Reported-by: Stephen Walsh <vk3heg@vk3heg.net>
Link: https://lists.debian.org/debian-68k/2022/09/msg00007.html
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/4f45f05f377bf3f5baf88dbd5c3c8aeac59d94f0.camel@physik.fu-berlin.de
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Finn Thain <fthain@linux-m68k.org>
Link: https://lore.kernel.org/r/dff216da09ab7a60217c3fc2147e671ae07d636f.1677528627.git.geert@linux-m68k.org
The asm-generic/gpio.h file is now always included when
using gpiolib, so just move its contents into linux/gpio.h
with a few minor simplifications.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Now that coldfire is the only user of a custom asm/gpio.h, it seems
better to remove this as well, and have the same interface everywhere.
For the gpio_get_value()/gpio_set_value()/gpio_to_irq(), gpio_cansleep()
functions, the custom version is only a micro-optimization to inline the
function for constant GPIO numbers. However, in the coldfire defconfigs,
I was unable to find a single instance where this micro-optimization
was even used, and according to Geert the only user appears to be the
QSPI chip that is disabled everywhere.
The custom gpio_request_one() function is even less useful, as it is
guarded by an #ifdef that is never true.
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Some of the page fault handlers do not deal with the following case
correctly:
* handle_mm_fault() has returned VM_FAULT_RETRY
* there is a pending fatal signal
* fault had happened in kernel mode
Correct action in such case is not "return unconditionally" - fatal
signals are handled only upon return to userland and something like
copy_to_user() would end up retrying the faulting instruction and
triggering the same fault again and again.
What we need to do in such case is to make the caller to treat that
as failed uaccess attempt - handle exception if there is an exception
handler for faulting instruction or oops if there isn't one.
Over the years some architectures had been fixed and now are handling
that case properly; some still do not. This series should fix the
remaining ones.
Status:
m68k, riscv, hexagon, parisc: tested/acked by maintainers.
alpha, sparc32, sparc64: tested locally - bug has been
reproduced on the unpatched kernel and verified to be fixed by
this series.
ia64, microblaze, nios2, openrisc: build, but otherwise
completely untested.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQQqUNBr3gm4hGXdBJlZ7Krx/gZQ6wUCZAP54AAKCRBZ7Krx/gZQ
6/IjAP92oS8kDuodAtT7WorV+GETWr2HFKfvDiPSmEGiSnXIigD9Hj9svXyeeAgl
/TqGR50Yrvn3IUQ0A0bUDpBAG1qyVwY=
=9+Bd
-----END PGP SIGNATURE-----
Merge tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull VM_FAULT_RETRY fixes from Al Viro:
"Some of the page fault handlers do not deal with the following case
correctly:
- handle_mm_fault() has returned VM_FAULT_RETRY
- there is a pending fatal signal
- fault had happened in kernel mode
Correct action in such case is not "return unconditionally" - fatal
signals are handled only upon return to userland and something like
copy_to_user() would end up retrying the faulting instruction and
triggering the same fault again and again.
What we need to do in such case is to make the caller to treat that as
failed uaccess attempt - handle exception if there is an exception
handler for faulting instruction or oops if there isn't one.
Over the years some architectures had been fixed and now are handling
that case properly; some still do not. This series should fix the
remaining ones.
Status:
- m68k, riscv, hexagon, parisc: tested/acked by maintainers.
- alpha, sparc32, sparc64: tested locally - bug has been reproduced
on the unpatched kernel and verified to be fixed by this series.
- ia64, microblaze, nios2, openrisc: build, but otherwise completely
untested"
* tag 'pull-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
openrisc: fix livelock in uaccess
nios2: fix livelock in uaccess
microblaze: fix livelock in uaccess
ia64: fix livelock in uaccess
sparc: fix livelock in uaccess
alpha: fix livelock in uaccess
parisc: fix livelock in uaccess
hexagon: fix livelock in uaccess
riscv: fix livelock in uaccess
m68k: fix livelock in uaccess
m68k equivalent of 26178ec11e "x86: mm: consolidate VM_FAULT_RETRY handling"
If e.g. get_user() triggers a page fault and a fatal signal is caught, we might
end up with handle_mm_fault() returning VM_FAULT_RETRY and not doing anything
to page tables. In such case we must *not* return to the faulting insn -
that would repeat the entire thing without making any progress; what we need
instead is to treat that as failed (user) memory access.
Tested-by: Finn Thain <fthain@linux-m68k.org>
Tested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
F_SEAL_EXEC") which permits the setting of the memfd execute bit at
memfd creation time, with the option of sealing the state of the X bit.
- Peter Xu adds a patch series ("mm/hugetlb: Make huge_pte_offset()
thread-safe for pmd unshare") which addresses a rare race condition
related to PMD unsharing.
- Several folioification patch serieses from Matthew Wilcox, Vishal
Moola, Sidhartha Kumar and Lorenzo Stoakes
- Johannes Weiner has a series ("mm: push down lock_page_memcg()") which
does perform some memcg maintenance and cleanup work.
- SeongJae Park has added DAMOS filtering to DAMON, with the series
"mm/damon/core: implement damos filter". These filters provide users
with finer-grained control over DAMOS's actions. SeongJae has also done
some DAMON cleanup work.
- Kairui Song adds a series ("Clean up and fixes for swap").
- Vernon Yang contributed the series "Clean up and refinement for maple
tree".
- Yu Zhao has contributed the "mm: multi-gen LRU: memcg LRU" series. It
adds to MGLRU an LRU of memcgs, to improve the scalability of global
reclaim.
- David Hildenbrand has added some userfaultfd cleanup work in the
series "mm: uffd-wp + change_protection() cleanups".
- Christoph Hellwig has removed the generic_writepages() library
function in the series "remove generic_writepages".
- Baolin Wang has performed some maintenance on the compaction code in
his series "Some small improvements for compaction".
- Sidhartha Kumar is doing some maintenance work on struct page in his
series "Get rid of tail page fields".
- David Hildenbrand contributed some cleanup, bugfixing and
generalization of pte management and of pte debugging in his series "mm:
support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on all architectures with swap
PTEs".
- Mel Gorman and Neil Brown have removed the __GFP_ATOMIC allocation
flag in the series "Discard __GFP_ATOMIC".
- Sergey Senozhatsky has improved zsmalloc's memory utilization with his
series "zsmalloc: make zspage chain size configurable".
- Joey Gouly has added prctl() support for prohibiting the creation of
writeable+executable mappings. The previous BPF-based approach had
shortcomings. See "mm: In-kernel support for memory-deny-write-execute
(MDWE)".
- Waiman Long did some kmemleak cleanup and bugfixing in the series
"mm/kmemleak: Simplify kmemleak_cond_resched() & fix UAF".
- T.J. Alumbaugh has contributed some MGLRU cleanup work in his series
"mm: multi-gen LRU: improve".
- Jiaqi Yan has provided some enhancements to our memory error
statistics reporting, mainly by presenting the statistics on a per-node
basis. See the series "Introduce per NUMA node memory error
statistics".
- Mel Gorman has a second and hopefully final shot at fixing a CPU-hog
regression in compaction via his series "Fix excessive CPU usage during
compaction".
- Christoph Hellwig does some vmalloc maintenance work in the series
"cleanup vfree and vunmap".
- Christoph Hellwig has removed block_device_operations.rw_page() in ths
series "remove ->rw_page".
- We get some maple_tree improvements and cleanups in Liam Howlett's
series "VMA tree type safety and remove __vma_adjust()".
- Suren Baghdasaryan has done some work on the maintainability of our
vm_flags handling in the series "introduce vm_flags modifier functions".
- Some pagemap cleanup and generalization work in Mike Rapoport's series
"mm, arch: add generic implementation of pfn_valid() for FLATMEM" and
"fixups for generic implementation of pfn_valid()"
- Baoquan He has done some work to make /proc/vmallocinfo and
/proc/kcore better represent the real state of things in his series
"mm/vmalloc.c: allow vread() to read out vm_map_ram areas".
- Jason Gunthorpe rationalized the GUP system's interface to the rest of
the kernel in the series "Simplify the external interface for GUP".
- SeongJae Park wishes to migrate people from DAMON's debugfs interface
over to its sysfs interface. To support this, we'll temporarily be
printing warnings when people use the debugfs interface. See the series
"mm/damon: deprecate DAMON debugfs interface".
- Andrey Konovalov provided the accurately named "lib/stackdepot: fixes
and clean-ups" series.
- Huang Ying has provided a dramatic reduction in migration's TLB flush
IPI rates with the series "migrate_pages(): batch TLB flushing".
- Arnd Bergmann has some objtool fixups in "objtool warning fixes".
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCY/PoPQAKCRDdBJ7gKXxA
jlvpAPsFECUBBl20qSue2zCYWnHC7Yk4q9ytTkPB/MMDrFEN9wD/SNKEm2UoK6/K
DmxHkn0LAitGgJRS/W9w81yrgig9tAQ=
=MlGs
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- Daniel Verkamp has contributed a memfd series ("mm/memfd: add
F_SEAL_EXEC") which permits the setting of the memfd execute bit at
memfd creation time, with the option of sealing the state of the X
bit.
- Peter Xu adds a patch series ("mm/hugetlb: Make huge_pte_offset()
thread-safe for pmd unshare") which addresses a rare race condition
related to PMD unsharing.
- Several folioification patch serieses from Matthew Wilcox, Vishal
Moola, Sidhartha Kumar and Lorenzo Stoakes
- Johannes Weiner has a series ("mm: push down lock_page_memcg()")
which does perform some memcg maintenance and cleanup work.
- SeongJae Park has added DAMOS filtering to DAMON, with the series
"mm/damon/core: implement damos filter".
These filters provide users with finer-grained control over DAMOS's
actions. SeongJae has also done some DAMON cleanup work.
- Kairui Song adds a series ("Clean up and fixes for swap").
- Vernon Yang contributed the series "Clean up and refinement for maple
tree".
- Yu Zhao has contributed the "mm: multi-gen LRU: memcg LRU" series. It
adds to MGLRU an LRU of memcgs, to improve the scalability of global
reclaim.
- David Hildenbrand has added some userfaultfd cleanup work in the
series "mm: uffd-wp + change_protection() cleanups".
- Christoph Hellwig has removed the generic_writepages() library
function in the series "remove generic_writepages".
- Baolin Wang has performed some maintenance on the compaction code in
his series "Some small improvements for compaction".
- Sidhartha Kumar is doing some maintenance work on struct page in his
series "Get rid of tail page fields".
- David Hildenbrand contributed some cleanup, bugfixing and
generalization of pte management and of pte debugging in his series
"mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on all architectures with
swap PTEs".
- Mel Gorman and Neil Brown have removed the __GFP_ATOMIC allocation
flag in the series "Discard __GFP_ATOMIC".
- Sergey Senozhatsky has improved zsmalloc's memory utilization with
his series "zsmalloc: make zspage chain size configurable".
- Joey Gouly has added prctl() support for prohibiting the creation of
writeable+executable mappings.
The previous BPF-based approach had shortcomings. See "mm: In-kernel
support for memory-deny-write-execute (MDWE)".
- Waiman Long did some kmemleak cleanup and bugfixing in the series
"mm/kmemleak: Simplify kmemleak_cond_resched() & fix UAF".
- T.J. Alumbaugh has contributed some MGLRU cleanup work in his series
"mm: multi-gen LRU: improve".
- Jiaqi Yan has provided some enhancements to our memory error
statistics reporting, mainly by presenting the statistics on a
per-node basis. See the series "Introduce per NUMA node memory error
statistics".
- Mel Gorman has a second and hopefully final shot at fixing a CPU-hog
regression in compaction via his series "Fix excessive CPU usage
during compaction".
- Christoph Hellwig does some vmalloc maintenance work in the series
"cleanup vfree and vunmap".
- Christoph Hellwig has removed block_device_operations.rw_page() in
ths series "remove ->rw_page".
- We get some maple_tree improvements and cleanups in Liam Howlett's
series "VMA tree type safety and remove __vma_adjust()".
- Suren Baghdasaryan has done some work on the maintainability of our
vm_flags handling in the series "introduce vm_flags modifier
functions".
- Some pagemap cleanup and generalization work in Mike Rapoport's
series "mm, arch: add generic implementation of pfn_valid() for
FLATMEM" and "fixups for generic implementation of pfn_valid()"
- Baoquan He has done some work to make /proc/vmallocinfo and
/proc/kcore better represent the real state of things in his series
"mm/vmalloc.c: allow vread() to read out vm_map_ram areas".
- Jason Gunthorpe rationalized the GUP system's interface to the rest
of the kernel in the series "Simplify the external interface for
GUP".
- SeongJae Park wishes to migrate people from DAMON's debugfs interface
over to its sysfs interface. To support this, we'll temporarily be
printing warnings when people use the debugfs interface. See the
series "mm/damon: deprecate DAMON debugfs interface".
- Andrey Konovalov provided the accurately named "lib/stackdepot: fixes
and clean-ups" series.
- Huang Ying has provided a dramatic reduction in migration's TLB flush
IPI rates with the series "migrate_pages(): batch TLB flushing".
- Arnd Bergmann has some objtool fixups in "objtool warning fixes".
* tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (505 commits)
include/linux/migrate.h: remove unneeded externs
mm/memory_hotplug: cleanup return value handing in do_migrate_range()
mm/uffd: fix comment in handling pte markers
mm: change to return bool for isolate_movable_page()
mm: hugetlb: change to return bool for isolate_hugetlb()
mm: change to return bool for isolate_lru_page()
mm: change to return bool for folio_isolate_lru()
objtool: add UACCESS exceptions for __tsan_volatile_read/write
kmsan: disable ftrace in kmsan core code
kasan: mark addr_has_metadata __always_inline
mm: memcontrol: rename memcg_kmem_enabled()
sh: initialize max_mapnr
m68k/nommu: add missing definition of ARCH_PFN_OFFSET
mm: percpu: fix incorrect size in pcpu_obj_full_size()
maple_tree: reduce stack usage with gcc-9 and earlier
mm: page_alloc: call panic() when memoryless node allocation fails
mm: multi-gen LRU: avoid futile retries
migrate_pages: move THP/hugetlb migration support check to simplify code
migrate_pages: batch flushing TLB
migrate_pages: share more code between _unmap and _move
...
Core GPIOLIB:
- drop several OF interfaces after moving a significant part of the code to
using software nodes
- remove more interfaces referring to the global GPIO numberspace that we're
getting rid of
- improvements in the gpio-regmap library
- add helper for GPIO device reference counting
- remove unused APIs
- minor tweaks like sorting headers alphabetically
Extended support in existing drivers:
- add support for Tegra 234 PMC to gpio-tegra186
Driver improvements:
- migrate the 104-dio/idi family of drivers to using the regmap-irq API
- migrate gpio-i8255 and gpio-mm to the GPIO regmap API
- clean-ups in gpio-pca953x
- remove duplicate assignments of of_gpio_n_cells in gpio-davinci, gpio-ge,
gpio-xilinx, gpio-zevio and gpio-wcd934x
- improvements to gpio-pcf857x: implement get/set_multiple callbacks, use
generic device properties instead of OF + minor tweaks
- fix OF-related header includes and Kconfig dependencies in gpio-zevio
- dynamically allocate the GPIO base in gpio-omap
- use a dedicated printf specifier for printing fwnode info in gpio-sim
- use dev_name() for the GPIO chip label in gpio-vf610
- other minor tweaks and fixes
Documentation:
- remove mentions of legacy API from comments in various places
- convert the DT binding documents to YAML schema for Fujitsu MB86S7x, Unisoc
GPIO and Unisoc EIC
- document the Unisoc UMS512 controller in DT bindings
-----BEGIN PGP SIGNATURE-----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=wWXb
-----END PGP SIGNATURE-----
Merge tag 'gpio-updates-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux
Pull gpio updates from Bartosz Golaszewski:
"A rather small update, there are no new drivers, just improvements and
refactoring in existing ones.
Thanks to migrating of several drivers to using generalized APIs and
dropping of OF interfaces in favor of using software nodes we're
actually removing more code than we're adding.
Core GPIOLIB:
- drop several OF interfaces after moving a significant part of the
code to using software nodes
- remove more interfaces referring to the global GPIO numberspace
that we're getting rid of
- improvements in the gpio-regmap library
- add helper for GPIO device reference counting
- remove unused APIs
- minor tweaks like sorting headers alphabetically
Extended support in existing drivers:
- add support for Tegra 234 PMC to gpio-tegra186
Driver improvements:
- migrate the 104-dio/idi family of drivers to using the regmap-irq
API
- migrate gpio-i8255 and gpio-mm to the GPIO regmap API
- clean-ups in gpio-pca953x
- remove duplicate assignments of of_gpio_n_cells in gpio-davinci,
gpio-ge, gpio-xilinx, gpio-zevio and gpio-wcd934x
- improvements to gpio-pcf857x: implement get/set_multiple callbacks,
use generic device properties instead of OF + minor tweaks
- fix OF-related header includes and Kconfig dependencies in
gpio-zevio
- dynamically allocate the GPIO base in gpio-omap
- use a dedicated printf specifier for printing fwnode info in
gpio-sim
- use dev_name() for the GPIO chip label in gpio-vf610
- other minor tweaks and fixes
Documentation:
- remove mentions of legacy API from comments in various places
- convert the DT binding documents to YAML schema for Fujitsu
MB86S7x, Unisoc GPIO and Unisoc EIC
- document the Unisoc UMS512 controller in DT bindings"
* tag 'gpio-updates-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (54 commits)
gpio: sim: Use %pfwP specifier instead of calling fwnode API directly
gpio: tegra186: remove unneeded loop in tegra186_gpio_init_route_mapping()
gpiolib: of: Move enum of_gpio_flags to its only user
gpio: mvebu: Use IS_REACHABLE instead of IS_ENABLED for CONFIG_PWM
gpio: zevio: Add missing header
gpio: Get rid of gpio_to_chip()
gpio: pcf857x: Drop unneeded explicit casting
gpio: pcf857x: Make use of device properties
gpio: pcf857x: Get rid of legacy platform data
gpio: rockchip: Do not mention legacy API in the code
gpio: wcd934x: Remove duplicate assignment of of_gpio_n_cells
gpio: zevio: Use proper headers and drop OF_GPIO dependency
gpio: zevio: Remove duplicate assignment of of_gpio_n_cells
gpio: xilinx: Remove duplicate assignment of of_gpio_n_cells
dt-bindings: gpio: Add compatible string for Unisoc UMS512
dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml
dt-bindings: gpio: Convert Unisoc GPIO controller binding to yaml
gpio: ge: Remove duplicate assignment of of_gpio_n_cells
gpio: davinci: Remove duplicate assignment of of_gpio_n_cells
gpio: omap: use dynamic allocation of base
...
Patch series "fixups for generic implementation of pfn_valid()".
Guenter reported boot failures on m68k-nommu and sh caused by the switch to
the generic implementation of pfn_valid():
https://lore.kernel.org/all/20230212173513.GA4052259@roeck-us.nethttps://lore.kernel.org/all/20230212161320.GA3784076@roeck-us.net
These are small fixups that address the issues.
This patch (of 2):
On m68k/nommu RAM does not necessarily start at 0x0 and when it does not
pfn_valid() uses a wrong offset into the memory map which causes silent
boot failures.
Define ARCH_PFN_OFFSET to make pfn_valid() use the correct offset.
Link: https://lkml.kernel.org/r/20230214140729.1649961-1-rppt@kernel.org
Link: https://lkml.kernel.org/r/20230214140729.1649961-2-rppt@kernel.org
Fixes: d82f07f06c ("m68k: use asm-generic/memory_model.h for both MMU and !MMU")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: Greg Ungerer <gerg@linux-m68k.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rich Felker <dalias@libc.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
When CONFIG_PROC_FS is not set, there is a build error for an unused
function. Make PROC_HARDWARE depend on PROC_FS to prevent this error.
In file included from ../arch/m68k/kernel/setup.c:3:
../arch/m68k/kernel/setup_mm.c:477:12: error: 'hardware_proc_show' defined but not used [-Werror=unused-function]
477 | static int hardware_proc_show(struct seq_file *m, void *v)
| ^~~~~~~~~~~~~~~~~~
Fixes: 66d857b08b ("m68k: merge m68k and m68knommu arch directories") # v3.0
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20230209010825.24136-1-rdunlap@infradead.org
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Every architecture that supports FLATMEM memory model defines its own
version of pfn_valid() that essentially compares a pfn to max_mapnr.
Use mips/powerpc version implemented as static inline as a generic
implementation of pfn_valid() and drop its per-architecture definitions.
[rppt@kernel.org: fix the generic pfn_valid()]
Link: https://lkml.kernel.org/r/Y9lg7R1Yd931C+y5@kernel.org
Link: https://lkml.kernel.org/r/20230129124235.209895-5-rppt@kernel.org
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Guo Ren <guoren@kernel.org> [csky]
Acked-by: Huacai Chen <chenhuacai@loongson.cn> [LoongArch]
Acked-by: Stafford Horne <shorne@gmail.com> [OpenRISC]
Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc]
Reviewed-by: David Hildenbrand <david@redhat.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Cc: Brian Cain <bcain@quicinc.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
The MMU variant uses generic definitions of page_to_pfn() and
pfn_to_page(), but !MMU defines them in include/asm/page_no.h for no good
reason.
Include asm-generic/memory_model.h in the common include/asm/page.h and
drop redundant definitions.
Link: https://lkml.kernel.org/r/20230129124235.209895-3-rppt@kernel.org
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Brian Cain <bcain@quicinc.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Huacai Chen <chenhuacai@loongson.cn>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Replace alloc_zeroed_user_highpage_movable(). The main difference is
returning a folio containing a single page instead of returning the page,
but take the opportunity to rename the function to match other allocation
functions a little better and rewrite the documentation to place more
emphasis on the zeroing rather than the highmem aspect.
Link: https://lkml.kernel.org/r/20230116191813.2145215-2-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
__HAVE_ARCH_PTE_SWP_EXCLUSIVE is now supported by all architectures that
support swp PTEs, so let's drop it.
Link: https://lkml.kernel.org/r/20230113171026.582290-27-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Let's support __HAVE_ARCH_PTE_SWP_EXCLUSIVE by stealing one bit from the
type. Generic MM currently only uses 5 bits for the type
(MAX_SWAPFILES_SHIFT), so the stolen bit is effectively unused.
The shift by 2 when converting between PTE and arch-specific swap entry
makes the swap PTE layout a little bit harder to decipher.
While at it, drop the comment from paulus---copy-and-paste leftover from
powerpc where we actually have _PAGE_HASHPTE---and mask the type in
__swp_entry_to_pte() as well.
Link: https://lkml.kernel.org/r/20230113171026.582290-12-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Michal Simek <monstr@monstr.eu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Let's support __HAVE_ARCH_PTE_SWP_EXCLUSIVE by stealing one bit from the
type. Generic MM currently only uses 5 bits for the type
(MAX_SWAPFILES_SHIFT), so the stolen bit is effectively unused.
While at it, make sure for sun3 that the valid bit never gets set by
properly masking it off and mask the type in __swp_entry().
Link: https://lkml.kernel.org/r/20230113171026.582290-11-david@redhat.com
Signed-off-by: David Hildenbrand <david@redhat.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Failing to specify a specific type here breaks anything that relies on the
type being explicitly known, such as page_folio().
Make explicit the type of null pointer returned here.
Link: https://lkml.kernel.org/r/ad6be2821bbd6af10966b3704568ff458b270d9c.1673526881.git.lstoakes@gmail.com
Signed-off-by: Lorenzo Stoakes <lstoakes@gmail.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes (Google) <joel@joelfernandes.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Liam R. Howlett <Liam.Howlett@oracle.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Add secure_computing() call to syscall_trace_enter to actually
filter system calls.
Add necessary arch Kconfig options, define TIF_SECCOMP trace
flag and provide basic seccomp filter support in asm/syscall.h
syscall_get_nr currently uses the syscall nr stored in orig_d0
because we change d0 to a default return code before starting a
syscall trace. This may be inconsistent with syscall_rollback
copying orig_d0 to d0 (which we never check upon return from
trace). We use d0 for the return code from syscall_trace_enter
in entry.S currently, and could perhaps expand that to store
a new syscall number returned by the seccomp filter before
executing the syscall. This clearly needs some discussion.
seccomp_bpf self test on ARAnyM passes 81 out of 94 tests.
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20230112035529.13521-3-schmitzmic@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Check return code of syscall_trace_enter(), and skip syscall
if -1. Return code will be left at what had been set by
ptrace or seccomp (in regs->d0).
No regression seen in testing with strace on ARAnyM.
Signed-off-by: Michael Schmitz <schmitzmic@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Link: https://lore.kernel.org/r/20230112035529.13521-2-schmitzmic@gmail.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
irq_to_gpio() is legacy and unused API, remove it for good.
This leaves gpio_to_irq() as it's used yet in many places.
Nevertheless, removal of its counterpart is a good signal
to whoever even trying to consider using them that do not.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Idle code is very like entry code in that RCU isn't available. As
such, add a little validation.
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Frederic Weisbecker <frederic@kernel.org>
Link: https://lore.kernel.org/r/20230112195540.373461409@infradead.org
The m68 hand-written assembler version of strcmp() has always been
broken: it returns the difference between the first non-matching byte
done as a 8-bit subtraction.
That is _almost_ right, but is broken for the overflow case. The
strcmp() function should indeed return the sign of the difference
between the first byte that differs, but the subtraction needs to be
done in a wider type than 'char'. Otherwise the ordering isn't actually
stable.
This went unnoticed for basically forever, because nobody ever cares
about non-US-ASCII orderings in the kernel (in fact, most users only
care about "exact match or not"), so overflows don't really happen in
practice, even if it was very very wrong.
But that mostly unnoticeable bug becomes very noticeable by the recent
change to make 'char' be unsigned in the kernel across all architectures
(commit 3bc753c06d: "kbuild: treat char as always unsigned"). Because
the code not only did the subtraction in the wrong type width, it also
used 'char' to then make the compiler expand the result from an 8-bit
difference to the 'int' return value.
So now with an unsigned char that incorrect arithmetic width was then
not even sign-expanded, and always returned just a positive integer.
We could re-instate the old broken code by just turning the 'char' into
'signed char' as has been done elsewhere where people depended on the
signedness of 'char', but since the whole function was broken to begin
with, and we have a non-broken default fallback implementation, let's
just remove this broken function entirely.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/lkml/20221221145332.GA2399037@roeck-us.net/
Cc: Jason Donenfeld <Jason@zx2c4.com>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes include:
. use strscpy() instead of strncpy() for cmdline setup
-----BEGIN PGP SIGNATURE-----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=7enN
-----END PGP SIGNATURE-----
Merge tag 'm68knommu-for-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu
Pull m68knommu update from Greg Ungerer:
"Only a single change to use the safer strscpy() instead of strncpy()
when setting up the cmdline"
* tag 'm68knommu-for-v6.2' of git://git.kernel.org/pub/scm/linux/kernel/git/gerg/m68knommu:
m68k: use strscpy() to instead of strncpy()
- More userfaultfs work from Peter Xu.
- Several convert-to-folios series from Sidhartha Kumar and Huang Ying.
- Some filemap cleanups from Vishal Moola.
- David Hildenbrand added the ability to selftest anon memory COW handling.
- Some cpuset simplifications from Liu Shixin.
- Addition of vmalloc tracing support by Uladzislau Rezki.
- Some pagecache folioifications and simplifications from Matthew Wilcox.
- A pagemap cleanup from Kefeng Wang: we have VM_ACCESS_FLAGS, so use it.
- Miguel Ojeda contributed some cleanups for our use of the
__no_sanitize_thread__ gcc keyword. This series shold have been in the
non-MM tree, my bad.
- Naoya Horiguchi improved the interaction between memory poisoning and
memory section removal for huge pages.
- DAMON cleanups and tuneups from SeongJae Park
- Tony Luck fixed the handling of COW faults against poisoned pages.
- Peter Xu utilized the PTE marker code for handling swapin errors.
- Hugh Dickins reworked compound page mapcount handling, simplifying it
and making it more efficient.
- Removal of the autonuma savedwrite infrastructure from Nadav Amit and
David Hildenbrand.
- zram support for multiple compression streams from Sergey Senozhatsky.
- David Hildenbrand reworked the GUP code's R/O long-term pinning so
that drivers no longer need to use the FOLL_FORCE workaround which
didn't work very well anyway.
- Mel Gorman altered the page allocator so that local IRQs can remnain
enabled during per-cpu page allocations.
- Vishal Moola removed the try_to_release_page() wrapper.
- Stefan Roesch added some per-BDI sysfs tunables which are used to
prevent network block devices from dirtying excessive amounts of
pagecache.
- David Hildenbrand did some cleanup and repair work on KSM COW
breaking.
- Nhat Pham and Johannes Weiner have implemented writeback in zswap's
zsmalloc backend.
- Brian Foster has fixed a longstanding corner-case oddity in
file[map]_write_and_wait_range().
- sparse-vmemmap changes for MIPS, LoongArch and NIOS2 from Feiyang
Chen.
- Shiyang Ruan has done some work on fsdax, to make its reflink mode
work better under xfstests. Better, but still not perfect.
- Christoph Hellwig has removed the .writepage() method from several
filesystems. They only need .writepages().
- Yosry Ahmed wrote a series which fixes the memcg reclaim target
beancounting.
- David Hildenbrand has fixed some of our MM selftests for 32-bit
machines.
- Many singleton patches, as usual.
-----BEGIN PGP SIGNATURE-----
iHUEABYKAB0WIQTTMBEPP41GrTpTJgfdBJ7gKXxAjgUCY5j6ZwAKCRDdBJ7gKXxA
jkDYAP9qNeVqp9iuHjZNTqzMXkfmJPsw2kmy2P+VdzYVuQRcJgEAgoV9d7oMq4ml
CodAgiA51qwzId3GRytIo/tfWZSezgA=
=d19R
-----END PGP SIGNATURE-----
Merge tag 'mm-stable-2022-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull MM updates from Andrew Morton:
- More userfaultfs work from Peter Xu
- Several convert-to-folios series from Sidhartha Kumar and Huang Ying
- Some filemap cleanups from Vishal Moola
- David Hildenbrand added the ability to selftest anon memory COW
handling
- Some cpuset simplifications from Liu Shixin
- Addition of vmalloc tracing support by Uladzislau Rezki
- Some pagecache folioifications and simplifications from Matthew
Wilcox
- A pagemap cleanup from Kefeng Wang: we have VM_ACCESS_FLAGS, so use
it
- Miguel Ojeda contributed some cleanups for our use of the
__no_sanitize_thread__ gcc keyword.
This series should have been in the non-MM tree, my bad
- Naoya Horiguchi improved the interaction between memory poisoning and
memory section removal for huge pages
- DAMON cleanups and tuneups from SeongJae Park
- Tony Luck fixed the handling of COW faults against poisoned pages
- Peter Xu utilized the PTE marker code for handling swapin errors
- Hugh Dickins reworked compound page mapcount handling, simplifying it
and making it more efficient
- Removal of the autonuma savedwrite infrastructure from Nadav Amit and
David Hildenbrand
- zram support for multiple compression streams from Sergey Senozhatsky
- David Hildenbrand reworked the GUP code's R/O long-term pinning so
that drivers no longer need to use the FOLL_FORCE workaround which
didn't work very well anyway
- Mel Gorman altered the page allocator so that local IRQs can remnain
enabled during per-cpu page allocations
- Vishal Moola removed the try_to_release_page() wrapper
- Stefan Roesch added some per-BDI sysfs tunables which are used to
prevent network block devices from dirtying excessive amounts of
pagecache
- David Hildenbrand did some cleanup and repair work on KSM COW
breaking
- Nhat Pham and Johannes Weiner have implemented writeback in zswap's
zsmalloc backend
- Brian Foster has fixed a longstanding corner-case oddity in
file[map]_write_and_wait_range()
- sparse-vmemmap changes for MIPS, LoongArch and NIOS2 from Feiyang
Chen
- Shiyang Ruan has done some work on fsdax, to make its reflink mode
work better under xfstests. Better, but still not perfect
- Christoph Hellwig has removed the .writepage() method from several
filesystems. They only need .writepages()
- Yosry Ahmed wrote a series which fixes the memcg reclaim target
beancounting
- David Hildenbrand has fixed some of our MM selftests for 32-bit
machines
- Many singleton patches, as usual
* tag 'mm-stable-2022-12-13' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (313 commits)
mm/hugetlb: set head flag before setting compound_order in __prep_compound_gigantic_folio
mm: mmu_gather: allow more than one batch of delayed rmaps
mm: fix typo in struct pglist_data code comment
kmsan: fix memcpy tests
mm: add cond_resched() in swapin_walk_pmd_entry()
mm: do not show fs mm pc for VM_LOCKONFAULT pages
selftests/vm: ksm_functional_tests: fixes for 32bit
selftests/vm: cow: fix compile warning on 32bit
selftests/vm: madv_populate: fix missing MADV_POPULATE_(READ|WRITE) definitions
mm/gup_test: fix PIN_LONGTERM_TEST_READ with highmem
mm,thp,rmap: fix races between updates of subpages_mapcount
mm: memcg: fix swapcached stat accounting
mm: add nodes= arg to memory.reclaim
mm: disable top-tier fallback to reclaim on proactive reclaim
selftests: cgroup: make sure reclaim target memcg is unprotected
selftests: cgroup: refactor proactive reclaim code to reclaim_until()
mm: memcg: fix stale protection of reclaim target memcg
mm/mmap: properly unaccount memory on mas_preallocate() failure
omfs: remove ->writepage
jfs: remove ->writepage
...
handling. Collecting per-thread register values is the
only thing that needs to be ifdefed there...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQQqUNBr3gm4hGXdBJlZ7Krx/gZQ6wUCY5ZyNgAKCRBZ7Krx/gZQ
63MZAQDZDE9Pk9EQ/3qOPNb2cuz8KSB3THUyotvustUUGPTUVAD/Ut1xD03jpWCY
oQ6tM8dNyh3+Vsx6/XKNd1+pj6IgNQE=
=XYkZ
-----END PGP SIGNATURE-----
Merge tag 'pull-elfcore' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull elf coredumping updates from Al Viro:
"Unification of regset and non-regset sides of ELF coredump handling.
Collecting per-thread register values is the only thing that needs to
be ifdefed there..."
* tag 'pull-elfcore' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
[elf] get rid of get_note_info_size()
[elf] unify regset and non-regset cases
[elf][non-regset] use elf_core_copy_task_regs() for dumper as well
[elf][non-regset] uninline elf_core_copy_task_fpregs() (and lose pt_regs argument)
elf_core_copy_task_regs(): task_pt_regs is defined everywhere
[elf][regset] simplify thread list handling in fill_note_info()
[elf][regset] clean fill_note_info() a bit
kill extern of vsyscall32_sysctl
kill coredump_params->regs
kill signal_pt_regs()
- Remove an unused function involving a non-explictly signed char
type,
- Reword a (correct) comment to stop the inflood of (incorrect)
patches trying to fix it,
- Defconfig updates.
-----BEGIN PGP SIGNATURE-----
iIsEABYIADMWIQQ9qaHoIs/1I4cXmEiKwlD9ZEnxcAUCY5c37BUcZ2VlcnRAbGlu
dXgtbTY4ay5vcmcACgkQisJQ/WRJ8XAQ2wEAoCm/HbZ+Y0VFr/4kXjEKw/Ydqgnw
ghb4mhBEbN2VW6ABANFE++BRy+7YtCgy0cNRTHqhbo9YWyZ0pBJsBeqHgiEB
=nbpW
-----END PGP SIGNATURE-----
Merge tag 'm68k-for-v6.2-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k
Pull m68k updates from Geert Uytterhoeven:
- remove an unused function involving a non-explictly signed char type
- reword a (correct) comment to stop the inflood of (incorrect) patches
trying to fix it
- defconfig updates
* tag 'm68k-for-v6.2-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
m68k: defconfig: Update defconfigs for v6.1-rc1
m68k: mac: Reword comment using double "in"
m68k: mac: Remove unused rbv_set_video_bpp()
The implementation of strscpy() is more robust and safer.
Signed-off-by: Xu Panda <xu.panda@zte.com.cn>
Signed-off-by: Yang Yang <yang.yang29@zte.com>
Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>
Currently CON_ENABLED is being (mis)used to identify if the console
has been registered. This is not reliable because it can be set even
though registration failed or it can be unset, even though the console
is registered. Use console_is_registered() instead.
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20221116162152.193147-24-john.ogness@linutronix.de
Don't bother with pointless macros - we are not sharing it with aout coredumps
anymore. Just convert the underlying functions to the same arguments (nobody
uses regs, actually) and call them elf_core_copy_task_fpregs(). And unexport
the entire bunch, while we are at it.
[added missing includes in arch/{csky,m68k,um}/kernel/process.c to avoid extra
warnings about the lack of externs getting added to huge piles for those
files. Pointless, but...]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Most architectures (except arm64/x86/sparc) simply return 1 for
kern_addr_valid(), which is only used in read_kcore(), and it calls
copy_from_kernel_nofault() which could check whether the address is a
valid kernel address. So as there is no need for kern_addr_valid(), let's
remove it.
Link: https://lkml.kernel.org/r/20221018074014.185687-1-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Acked-by: Heiko Carstens <hca@linux.ibm.com> [s390]
Acked-by: Christoph Hellwig <hch@lst.de>
Acked-by: Helge Deller <deller@gmx.de> [parisc]
Acked-by: Michael Ellerman <mpe@ellerman.id.au> [powerpc]
Acked-by: Guo Ren <guoren@kernel.org> [csky]
Acked-by: Catalin Marinas <catalin.marinas@arm.com> [arm64]
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: <aou@eecs.berkeley.edu>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Chris Zankel <chris@zankel.net>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Will Deacon <will@kernel.org>
Cc: Xuerui Wang <kernel@xen0n.name>
Cc: Yoshinori Sato <ysato@users.osdn.me>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
In examining rbv_set_video_bpp()'s improper usage of a non-explictly
signed char type, it turns out that the function is actually unused.
So remove it.
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Link: https://lore.kernel.org/r/20221026130051.1577286-1-Jason@zx2c4.com
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
