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Unify the code that flushes, clears pmd entry, and frees the PTE table
level into a new function collapse_and_free_pmd().
This cleanup is useful as in the next patch we will add another call to
this function to iterate through PTE prior to freeing the level for page
table check.
Link: https://lkml.kernel.org/r/20220131203249.2832273-4-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Paul Turner <pjt@google.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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For consistency, use "unsigned long" for all page counters.
Also, reduce code duplication by calling __page_table_check_*_clear()
from __page_table_check_*_set() functions.
Link: https://lkml.kernel.org/r/20220131203249.2832273-3-pasha.tatashin@soleen.com
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Wei Xu <weixugc@google.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Paul Turner <pjt@google.com>
Cc: Will Deacon <will@kernel.org>
Cc: Zi Yan <ziy@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Patch series "page table check fixes and cleanups", v5.
This patch (of 4):
The pte entry that is used in pte_advanced_tests() is never removed from
the page table at the end of the test.
The issue is detected by page_table_check, to repro compile kernel with
the following configs:
CONFIG_DEBUG_VM_PGTABLE=y
CONFIG_PAGE_TABLE_CHECK=y
CONFIG_PAGE_TABLE_CHECK_ENFORCED=y
During the boot the following BUG is printed:
debug_vm_pgtable: [debug_vm_pgtable ]: Validating architecture page table helpers
------------[ cut here ]------------
kernel BUG at mm/page_table_check.c:162!
invalid opcode: 0000 [#1] PREEMPT SMP PTI
CPU: 0 PID: 1 Comm: swapper/0 Not tainted 5.16.0-11413-g2c271fe77d52 #3
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.15.0-0-g2dd4b9b3f840-prebuilt.qemu.org 04/01/2014
...
The entry should be properly removed from the page table before the page
is released to the free list.
Link: https://lkml.kernel.org/r/20220131203249.2832273-1-pasha.tatashin@soleen.com
Link: https://lkml.kernel.org/r/20220131203249.2832273-2-pasha.tatashin@soleen.com
Fixes: a5c3b9ffb0f4 ("mm/debug_vm_pgtable: add tests validating advanced arch page table helpers")
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Reviewed-by: Zi Yan <ziy@nvidia.com>
Tested-by: Zi Yan <ziy@nvidia.com>
Acked-by: David Rientjes <rientjes@google.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Paul Turner <pjt@google.com>
Cc: Wei Xu <weixugc@google.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Will Deacon <will@kernel.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Muchun Song <songmuchun@bytedance.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: <stable@vger.kernel.org> [5.9+]
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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This reverts commit 721fb891ad0b3956d5c168b2931e3e5e4fb7ca40.
Commit 721fb891ad0b ("mm/page_isolation: unset migratetype directly for
non Buddy page") will result memory that should in buddy disappear by
mistake. move_freepages_block moves all pages in pageblock instead of
pages indicated by input parameter, so if input pages is not in buddy
but other pages in pageblock is in buddy, it will result in page out of
control.
Link: https://lkml.kernel.org/r/20220126024436.13921-1-chenwandun@huawei.com
Fixes: 721fb891ad0b ("mm/page_isolation: unset migratetype directly for non Buddy page")
Signed-off-by: Chen Wandun <chenwandun@huawei.com>
Reported-by: "kernelci.org bot" <bot@kernelci.org>
Acked-by: David Hildenbrand <david@redhat.com>
Tested-by: Dong Aisheng <aisheng.dong@nxp.com>
Tested-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The move of proc_dointvec_minmax_sysadmin() from kernel/sysctl.c to
kernel/printk/sysctl.c introduced an incorrect __user attribute to the
buffer argument. I spotted this change in [1] as well as the kernel
test robot. Revert this change to please sparse:
kernel/printk/sysctl.c:20:51: warning: incorrect type in argument 3 (different address spaces)
kernel/printk/sysctl.c:20:51: expected void *
kernel/printk/sysctl.c:20:51: got void [noderef] __user *buffer
Fixes: faaa357a55e0 ("printk: move printk sysctl to printk/sysctl.c")
Link: https://lore.kernel.org/r/20220104155024.48023-2-mic@digikod.net [1]
Reported-by: kernel test robot <lkp@intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: John Ogness <john.ogness@linutronix.de>
Cc: Luis Chamberlain <mcgrof@kernel.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Sergey Senozhatsky <senozhatsky@chromium.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Xiaoming Ni <nixiaoming@huawei.com>
Signed-off-by: Mickaël Salaün <mic@linux.microsoft.com>
Link: https://lore.kernel.org/r/20220203145029.272640-1-mic@digikod.net
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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used"
This reverts commit 774a1221e862b343388347bac9b318767336b20b.
We need to finish all async code before the module init sequence is
done. In the reverted commit the PF_USED_ASYNC flag was added to mark a
thread that called async_schedule(). Then the PF_USED_ASYNC flag was
used to determine whether or not async_synchronize_full() needs to be
invoked. This works when modprobe thread is calling async_schedule(),
but it does not work if module dispatches init code to a worker thread
which then calls async_schedule().
For example, PCI driver probing is invoked from a worker thread based on
a node where device is attached:
if (cpu < nr_cpu_ids)
error = work_on_cpu(cpu, local_pci_probe, &ddi);
else
error = local_pci_probe(&ddi);
We end up in a situation where a worker thread gets the PF_USED_ASYNC
flag set instead of the modprobe thread. As a result,
async_synchronize_full() is not invoked and modprobe completes without
waiting for the async code to finish.
The issue was discovered while loading the pm80xx driver:
(scsi_mod.scan=async)
modprobe pm80xx worker
...
do_init_module()
...
pci_call_probe()
work_on_cpu(local_pci_probe)
local_pci_probe()
pm8001_pci_probe()
scsi_scan_host()
async_schedule()
worker->flags |= PF_USED_ASYNC;
...
< return from worker >
...
if (current->flags & PF_USED_ASYNC) <--- false
async_synchronize_full();
Commit 21c3c5d28007 ("block: don't request module during elevator init")
fixed the deadlock issue which the reverted commit 774a1221e862
("module, async: async_synchronize_full() on module init iff async is
used") tried to fix.
Since commit 0fdff3ec6d87 ("async, kmod: warn on synchronous
request_module() from async workers") synchronous module loading from
async is not allowed.
Given that the original deadlock issue is fixed and it is no longer
allowed to call synchronous request_module() from async we can remove
PF_USED_ASYNC flag to make module init consistently invoke
async_synchronize_full() unless async module probe is requested.
Signed-off-by: Igor Pylypiv <ipylypiv@google.com>
Reviewed-by: Changyuan Lyu <changyuanl@google.com>
Reviewed-by: Luis Chamberlain <mcgrof@kernel.org>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup
Pull cgroup fixes from Tejun Heo:
- Eric's fix for a long standing cgroup1 permission issue where it only
checks for uid 0 instead of CAP which inadvertently allows
unprivileged userns roots to modify release_agent userhelper
- Fixes for the fallout from Waiman's recent cpuset work
* 'for-5.17-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup:
cgroup/cpuset: Fix "suspicious RCU usage" lockdep warning
cgroup-v1: Require capabilities to set release_agent
cpuset: Fix the bug that subpart_cpus updated wrongly in update_cpumask()
cgroup/cpuset: Make child cpusets restrict parents on v1 hierarchy
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It was found that a "suspicious RCU usage" lockdep warning was issued
with the rcu_read_lock() call in update_sibling_cpumasks(). It is
because the update_cpumasks_hier() function may sleep. So we have
to release the RCU lock, call update_cpumasks_hier() and reacquire
it afterward.
Also add a percpu_rwsem_assert_held() in update_sibling_cpumasks()
instead of stating that in the comment.
Fixes: 4716909cc5c5 ("cpuset: Track cpusets that use parent's effective_cpus")
Signed-off-by: Waiman Long <longman@redhat.com>
Tested-by: Phil Auld <pauld@redhat.com>
Reviewed-by: Phil Auld <pauld@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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This reverts commit 54d516b1d62ff8f17cee2da06e5e4706a0d00b8a
That commit did a refactoring that effectively combined fast and slow
gup paths (again). And that was again incorrect, for two reasons:
a) Fast gup and slow gup get reference counts on pages in different
ways and with different goals: see Linus' writeup in commit
cd1adf1b63a1 ("Revert "mm/gup: remove try_get_page(), call
try_get_compound_head() directly""), and
b) try_grab_compound_head() also has a specific check for
"FOLL_LONGTERM && !is_pinned(page)", that assumes that the caller
can fall back to slow gup. This resulted in new failures, as
recently report by Will McVicker [1].
But (a) has problems too, even though they may not have been reported
yet. So just revert this.
Link: https://lore.kernel.org/r/20220131203504.3458775-1-willmcvicker@google.com [1]
Fixes: 54d516b1d62f ("mm/gup: small refactoring: simplify try_grab_page()")
Reported-and-tested-by: Will McVicker <willmcvicker@google.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Minchan Kim <minchan@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Christian Borntraeger <borntraeger@de.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: stable@vger.kernel.org # 5.15
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux
Pull MIPS fixes from Thomas Bogendoerfer:
- fix missed change for PTR->PTR_WD conversion
- kernel-doc fixes
* tag 'mips-fixes-5.17_2' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
MIPS: KVM: fix vz.c kernel-doc notation
MIPS: octeon: Fix missed PTR->PTR_WD conversion
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git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd fixes from Chuck Lever:
"Notable bug fixes:
- Ensure SM_NOTIFY doesn't crash the NFS server host
- Ensure NLM locks are cleaned up after client reboot
- Fix a leak of internal NFSv4 lease information"
* tag 'nfsd-5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
nfsd: nfsd4_setclientid_confirm mistakenly expires confirmed client.
lockd: fix failure to cleanup client locks
lockd: fix server crash on reboot of client holding lock
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git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs
Pull fanotify fix from Jan Kara:
"Fix stale file descriptor in copy_event_to_user"
* tag 'fsnotify_for_v5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs:
fanotify: Fix stale file descriptor in copy_event_to_user()
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git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest
Pull KUnit fixes from Shuah Khan:
"A single fix to an error seen on qemu due to a missing import"
* tag 'linux-kselftest-kunit-fixes-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
kunit: tool: Import missing importlib.abc
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git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
Pull pin control fixes from Linus Walleij:
"Most interesting and urgent is the Intel stuff affecting Chromebooks
and laptops.
- Fix up group name building on the Intel Thunderbay
- Fix interrupt problems on the Intel Cherryview
- Fix some pin data on the Sunxi H616
- Fix up the CONFIG_PINCTRL_ST Kconfig sort order as noted during the
merge window
- Fix an unexpected interrupt problem on the Intel Sunrisepoint
- Fix a glitch when updating IRQ flags on all Intel pin controllers
- Revert a Zynqmp patch to unify the pin naming, let's find some
better solution
- Fix some error paths in the Broadcom BCM2835 driver
- Fix a Kconfig problem pertaining to the BCM63XX drivers
- Fix the regmap support in the Microchip SGPIO driver"
* tag 'pinctrl-v5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
pinctrl: microchip-sgpio: Fix support for regmap
pinctrl: bcm63xx: fix unmet dependency on REGMAP for GPIO_REGMAP
pinctrl: bcm2835: Fix a few error paths
pinctrl: zynqmp: Revert "Unify pin naming"
pinctrl: intel: Fix a glitch when updating IRQ flags on a preconfigured line
pinctrl: intel: fix unexpected interrupt
pinctrl: Place correctly CONFIG_PINCTRL_ST in the Makefile
pinctrl: sunxi: Fix H616 I2S3 pin data
pinctrl: cherryview: Trigger hwirq0 for interrupt-lines without a mapping
pinctrl: thunderbay: rework loops looking for groups names
pinctrl: thunderbay: comment process of building functions a bit
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"There are quite a few fixes that have accumilated since the merge
window here, all driver specific and none super urgent, plus a new
device ID for the Rockchip driver"
* tag 'spi-fix-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: mediatek: Avoid NULL pointer crash in interrupt
spi: dt-bindings: Fix 'reg' child node schema
spi: bcm-qspi: check for valid cs before applying chip select
spi: uniphier: fix reference count leak in uniphier_spi_probe()
spi: meson-spicc: add IRQ check in meson_spicc_probe
spi: uniphier: Fix a bug that doesn't point to private data correctly
spi: change clk_disable_unprepare to clk_unprepare
spi: spi-rockchip: Add rk3568-spi compatible
spi: stm32: make SPI_MASTER_MUST_TX flags only specific to STM32F4
spi: stm32: remove inexistant variables in struct stm32_spi_cfg comment
spi: stm32-qspi: Update spi registering
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git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator
Pull regulator fixes from Mark Brown:
"A couple of very minor fixes for the regulator framework, nothing at
all urgent here"
* tag 'regulator-fix-v5.17-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regulator:
regulator: MAX20086: add gpio/consumer.h
regulator: max20086: fix error code in max20086_parse_regulators_dt()
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git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86
Pull x86 platform driver fixes from Hans de Goede:
"This consists of various build- and bug-fixes as well as a few
hardware-id additions.
Highlights:
- Bunch of fixes for the new x86-android-tablets module
- Misc other fixes
- A couple of hw-id additions"
* tag 'platform-drivers-x86-v5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/pdx86/platform-drivers-x86:
platform/x86: thinkpad_acpi: Fix incorrect use of platform profile on AMD platforms
platform/x86: amd-pmc: Correct usage of SMU version
platform/x86: asus-tf103c-dock: Make 2 global structs static
platform/x86: amd-pmc: Make amd_pmc_stb_debugfs_fops static
platform/x86: ISST: Fix possible circular locking dependency detected
platform/x86: intel_crystal_cove_charger: Fix IRQ masking / unmasking
platform/x86: thinkpad_acpi: Add quirk for ThinkPads without a fan
platform/x86: touchscreen_dmi: Add info for the RWC NANOTE P8 AY07J 2-in-1
platform/surface: Reinstate platform dependency
platform/x86: x86-android-tablets: Trivial typo fix for MODULE_AUTHOR
platform/x86: x86-android-tablets: Fix the buttons on CZC P10T tablet
platform/x86: x86-android-tablets: Constify the gpiod_lookup_tables arrays
platform/x86: x86-android-tablets: Add an init() callback to struct x86_dev_info
platform/x86: x86-android-tablets: Add support for disabling ACPI _AEI handlers
platform/x86: x86-android-tablets: Correct crystal_cove_charger module name
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git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs
Pull overlayfs fixes from Miklos Szeredi:
"Fix a regression introduced in v5.15, affecting copy up of files with
'noatime' or 'sync' attributes to a tmpfs upper layer"
* tag 'ovl-fixes-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/vfs:
ovl: don't fail copy up if no fileattr support on upper
ovl: fix NULL pointer dereference in copy up warning
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At least one of the addresses will stop functioning after February.
Signed-off-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode
Pull unicode cleanup from Gabriel Krisman Bertazi:
"A fix from Christoph Hellwig merging the CONFIG_UNICODE_UTF8_DATA into
the previous CONFIG_UNICODE. It is -rc material since we don't want to
expose the former symbol on 5.17.
This has been living on linux-next for the past week"
* tag 'unicode-for-next-5.17-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/krisman/unicode:
unicode: clean up the Kconfig symbol confusion
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit
Pull audit fix from Paul Moore:
"A single audit patch to fix problems relating to audit queuing and
system responsiveness when "audit=1" is specified on the kernel
command line and the audit daemon is SIGSTOP'd for an extended period
of time"
* tag 'audit-pr-20220131' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
audit: improve audit queue handling when "audit=1" on cmdline
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The cgroup release_agent is called with call_usermodehelper. The function
call_usermodehelper starts the release_agent with a full set fo capabilities.
Therefore require capabilities when setting the release_agaent.
Reported-by: Tabitha Sable <tabitha.c.sable@gmail.com>
Tested-by: Tabitha Sable <tabitha.c.sable@gmail.com>
Fixes: 81a6a5cdd2c5 ("Task Control Groups: automatic userspace notification of idle cgroups")
Cc: stable@vger.kernel.org # v2.6.24+
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
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platforms
Lenovo AMD based platforms have been offering platform_profiles but they
are not working correctly. This is because the mode we are using on the
Intel platforms (MMC) is not available on the AMD platforms.
This commit adds checking of the functional capabilities returned by the
BIOS to confirm if MMC is supported or not. Profiles will not be
available if the platform is not MMC capable.
I'm investigating and working on an alternative for AMD platforms but
that is still work-in-progress.
Signed-off-by: Mark Pearson <markpearson@lenovo.com>
Link: https://lore.kernel.org/r/20220127190358.4078-1-markpearson@lenovo.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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This code calls fd_install() which gives the userspace access to the fd.
Then if copy_info_records_to_user() fails it calls put_unused_fd(fd) but
that will not release it and leads to a stale entry in the file
descriptor table.
Generally you can't trust the fd after a call to fd_install(). The fix
is to delay the fd_install() until everything else has succeeded.
Fortunately it requires CAP_SYS_ADMIN to reach this code so the security
impact is less.
Fixes: f644bc449b37 ("fanotify: fix copy_event_to_user() fid error clean up")
Link: https://lore.kernel.org/r/20220128195656.GA26981@kili
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Mathias Krause <minipli@grsecurity.net>
Signed-off-by: Jan Kara <jack@suse.cz>
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Fix all kernel-doc warnings in mips/kvm/vz.c as reported by the
kernel test robot:
arch/mips/kvm/vz.c:471: warning: Function parameter or member 'out_compare' not described in '_kvm_vz_save_htimer'
arch/mips/kvm/vz.c:471: warning: Function parameter or member 'out_cause' not described in '_kvm_vz_save_htimer'
arch/mips/kvm/vz.c:471: warning: Excess function parameter 'compare' description in '_kvm_vz_save_htimer'
arch/mips/kvm/vz.c:471: warning: Excess function parameter 'cause' description in '_kvm_vz_save_htimer'
arch/mips/kvm/vz.c:1551: warning: No description found for return value of 'kvm_trap_vz_handle_cop_unusable'
arch/mips/kvm/vz.c:1552: warning: expecting prototype for kvm_trap_vz_handle_cop_unusuable(). Prototype was for kvm_trap_vz_handle_cop_unusable() instead
arch/mips/kvm/vz.c:1597: warning: No description found for return value of 'kvm_trap_vz_handle_msa_disabled'
Fixes: c992a4f6a9b0 ("KVM: MIPS: Implement VZ support")
Fixes: f4474d50c7d4 ("KVM: MIPS/VZ: Support hardware guest timer")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: linux-mips@vger.kernel.org
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Aleksandar Markovic <aleksandar.qemu.devel@gmail.com>
Cc: James Hogan <jhogan@kernel.org>
Cc: kvm@vger.kernel.org
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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Fixes: fa62f39dc7e2 ("MIPS: Fix build error due to PTR used in more places")
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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In some case, like after a transfer timeout, master->cur_msg pointer
is NULL which led to a kernel crash when trying to use master->cur_msg->spi.
mtk_spi_can_dma(), pointed by master->can_dma, doesn't use this parameter
avoid the problem by setting NULL as second parameter.
Fixes: a568231f46322 ("spi: mediatek: Add spi bus for Mediatek MT8173")
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Link: https://lore.kernel.org/r/20220131141708.888710-1-benjamin.gaignard@collabora.com
Signed-off-by: Mark Brown <broonie@kernel.org>
|
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Initially the driver accessed the registers using u32 __iomem but then
in the blamed commit it changed it to use regmap. The problem is that now
the offset of the registers is not calculated anymore at word offset but
at byte offset. Therefore make sure to multiply the offset with word size.
Acked-by: Steen Hegelund <Steen.Hegelund@microchip.com>
Reviewed-by: Colin Foster <colin.foster@in-advantage.com>
Fixes: 2afbbab45c261a ("pinctrl: microchip-sgpio: update to support regmap")
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20220131085201.307031-1-horatiu.vultur@microchip.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fixes from Borislav Petkov:
- Drop an unused private data field in the AIC driver
- Various fixes to the realtek-rtl driver
- Make the GICv3 ITS driver compile again in !SMP configurations
- Force reset of the GICv3 ITSs at probe time to avoid issues during kexec
- Yet another kfree/bitmap_free conversion
- Various DT updates (Renesas, SiFive)
* tag 'irq_urgent_for_v5.17_rc2_p2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
dt-bindings: interrupt-controller: sifive,plic: Group interrupt tuples
dt-bindings: interrupt-controller: sifive,plic: Fix number of interrupts
dt-bindings: irqchip: renesas-irqc: Add R-Car V3U support
irqchip/gic-v3-its: Reset each ITS's BASERn register before probe
irqchip/gic-v3-its: Fix build for !SMP
irqchip/loongson-pch-ms: Use bitmap_free() to free bitmap
irqchip/realtek-rtl: Service all pending interrupts
irqchip/realtek-rtl: Fix off-by-one in routing
irqchip/realtek-rtl: Map control data to virq
irqchip/apple-aic: Drop unused ipi_hwirq field
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Borislav Petkov:
- Prevent accesses to the per-CPU cgroup context list from another CPU
except the one it belongs to, to avoid list corruption
- Make sure parent events are always woken up to avoid indefinite hangs
in the traced workload
* tag 'perf_urgent_for_v5.17_rc2_p2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: Fix cgroup event list management
perf: Always wake the parent event
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Borislav Petkov:
"Make sure the membarrier-rseq fence commands are part of the reported
set when querying membarrier(2) commands through MEMBARRIER_CMD_QUERY"
* tag 'sched_urgent_for_v5.17_rc2_p2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/membarrier: Fix membarrier-rseq fence command missing from query bitmask
|
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fixes from Borislav Petkov:
- Add another Intel CPU model to the list of CPUs supporting the
processor inventory unique number
- Allow writing to MCE thresholding sysfs files again - a previous
change had accidentally disabled it and no one noticed. Goes to show
how much is this stuff used
* tag 'x86_urgent_for_v5.17_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/cpu: Add Xeon Icelake-D to list of CPUs that support PPIN
x86/MCE/AMD: Allow thresholding interface updates after init
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Merge misc fixes from Andrew Morton:
"12 patches.
Subsystems affected by this patch series: sysctl, binfmt, ia64, mm
(memory-failure, folios, kasan, and psi), selftests, and ocfs2"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
ocfs2: fix a deadlock when commit trans
jbd2: export jbd2_journal_[grab|put]_journal_head
psi: fix "defined but not used" warnings when CONFIG_PROC_FS=n
psi: fix "no previous prototype" warnings when CONFIG_CGROUPS=n
mm, kasan: use compare-exchange operation to set KASAN page tag
kasan: test: fix compatibility with FORTIFY_SOURCE
tools/testing/scatterlist: add missing defines
mm: page->mapping folio->mapping should have the same offset
memory-failure: fetch compound_head after pgmap_pfn_valid()
ia64: make IA64_MCA_RECOVERY bool instead of tristate
binfmt_misc: fix crash when load/unload module
include/linux/sysctl.h: fix register_sysctl_mount_point() return type
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commit 6f1b228529ae introduces a regression which can deadlock as
follows:
Task1: Task2:
jbd2_journal_commit_transaction ocfs2_test_bg_bit_allocatable
spin_lock(&jh->b_state_lock) jbd_lock_bh_journal_head
__jbd2_journal_remove_checkpoint spin_lock(&jh->b_state_lock)
jbd2_journal_put_journal_head
jbd_lock_bh_journal_head
Task1 and Task2 lock bh->b_state and jh->b_state_lock in different
order, which finally result in a deadlock.
So use jbd2_journal_[grab|put]_journal_head instead in
ocfs2_test_bg_bit_allocatable() to fix it.
Link: https://lkml.kernel.org/r/20220121071205.100648-3-joseph.qi@linux.alibaba.com
Fixes: 6f1b228529ae ("ocfs2: fix race between searching chunks and release journal_head from buffer_head")
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Reported-by: Gautham Ananthakrishna <gautham.ananthakrishna@oracle.com>
Tested-by: Gautham Ananthakrishna <gautham.ananthakrishna@oracle.com>
Reported-by: Saeed Mirzamohammadi <saeed.mirzamohammadi@oracle.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Patch series "ocfs2: fix a deadlock case".
This fixes a deadlock case in ocfs2. We firstly export jbd2 symbols
jbd2_journal_[grab|put]_journal_head as preparation and later use them
in ocfs2 insread of jbd_[lock|unlock]_bh_journal_head to fix the
deadlock.
This patch (of 2):
This exports symbols jbd2_journal_[grab|put]_journal_head, which will be
used outside modules, e.g. ocfs2.
Link: https://lkml.kernel.org/r/20220121071205.100648-2-joseph.qi@linux.alibaba.com
Signed-off-by: Joseph Qi <joseph.qi@linux.alibaba.com>
Cc: Mark Fasheh <mark@fasheh.com>
Cc: Joel Becker <jlbec@evilplan.org>
Cc: Junxiao Bi <junxiao.bi@oracle.com>
Cc: Changwei Ge <gechangwei@live.cn>
Cc: Gang He <ghe@suse.com>
Cc: Jun Piao <piaojun@huawei.com>
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Gautham Ananthakrishna <gautham.ananthakrishna@oracle.com>
Cc: Saeed Mirzamohammadi <saeed.mirzamohammadi@oracle.com>
Cc: "Theodore Ts'o" <tytso@mit.edu>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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When CONFIG_PROC_FS is disabled psi code generates the following
warnings:
kernel/sched/psi.c:1364:30: warning: 'psi_cpu_proc_ops' defined but not used [-Wunused-const-variable=]
1364 | static const struct proc_ops psi_cpu_proc_ops = {
| ^~~~~~~~~~~~~~~~
kernel/sched/psi.c:1355:30: warning: 'psi_memory_proc_ops' defined but not used [-Wunused-const-variable=]
1355 | static const struct proc_ops psi_memory_proc_ops = {
| ^~~~~~~~~~~~~~~~~~~
kernel/sched/psi.c:1346:30: warning: 'psi_io_proc_ops' defined but not used [-Wunused-const-variable=]
1346 | static const struct proc_ops psi_io_proc_ops = {
| ^~~~~~~~~~~~~~~
Make definitions of these structures and related functions conditional
on CONFIG_PROC_FS config.
Link: https://lkml.kernel.org/r/20220119223940.787748-3-surenb@google.com
Fixes: 0e94682b73bf ("psi: introduce psi monitor")
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
When CONFIG_CGROUPS is disabled psi code generates the following
warnings:
kernel/sched/psi.c:1112:21: warning: no previous prototype for 'psi_trigger_create' [-Wmissing-prototypes]
1112 | struct psi_trigger *psi_trigger_create(struct psi_group *group,
| ^~~~~~~~~~~~~~~~~~
kernel/sched/psi.c:1182:6: warning: no previous prototype for 'psi_trigger_destroy' [-Wmissing-prototypes]
1182 | void psi_trigger_destroy(struct psi_trigger *t)
| ^~~~~~~~~~~~~~~~~~~
kernel/sched/psi.c:1249:10: warning: no previous prototype for 'psi_trigger_poll' [-Wmissing-prototypes]
1249 | __poll_t psi_trigger_poll(void **trigger_ptr,
| ^~~~~~~~~~~~~~~~
Change the declarations of these functions in the header to provide the
prototypes even when they are unused.
Link: https://lkml.kernel.org/r/20220119223940.787748-2-surenb@google.com
Fixes: 0e94682b73bf ("psi: introduce psi monitor")
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
It has been reported that the tag setting operation on newly-allocated
pages can cause the page flags to be corrupted when performed
concurrently with other flag updates as a result of the use of
non-atomic operations.
Fix the problem by using a compare-exchange loop to update the tag.
Link: https://lkml.kernel.org/r/20220120020148.1632253-1-pcc@google.com
Link: https://linux-review.googlesource.com/id/I456b24a2b9067d93968d43b4bb3351c0cec63101
Fixes: 2813b9c02962 ("kasan, mm, arm64: tag non slab memory allocated via pagealloc")
Signed-off-by: Peter Collingbourne <pcc@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
With CONFIG_FORTIFY_SOURCE enabled, string functions will also perform
dynamic checks using __builtin_object_size(ptr), which when failed will
panic the kernel.
Because the KASAN test deliberately performs out-of-bounds operations,
the kernel panics with FORTIFY_SOURCE, for example:
| kernel BUG at lib/string_helpers.c:910!
| invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
| CPU: 1 PID: 137 Comm: kunit_try_catch Tainted: G B 5.16.0-rc3+ #3
| Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-2 04/01/2014
| RIP: 0010:fortify_panic+0x19/0x1b
| ...
| Call Trace:
| kmalloc_oob_in_memset.cold+0x16/0x16
| ...
Fix it by also hiding `ptr` from the optimizer, which will ensure that
__builtin_object_size() does not return a valid size, preventing
fortified string functions from panicking.
Link: https://lkml.kernel.org/r/20220124160744.1244685-1-elver@google.com
Signed-off-by: Marco Elver <elver@google.com>
Reported-by: Nico Pache <npache@redhat.com>
Reviewed-by: Nico Pache <npache@redhat.com>
Reviewed-by: Andrey Konovalov <andreyknvl@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Brendan Higgins <brendanhiggins@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The cited commits replaced preemptible with pagefault_disabled and
flush_kernel_dcache_page with flush_dcache_page respectively, hence need
to update the corresponding defines in the test.
scatterlist.c: In function ‘sg_miter_stop’:
scatterlist.c:919:4: warning: implicit declaration of function ‘flush_dcache_page’ [-Wimplicit-function-declaration]
flush_dcache_page(miter->page);
^~~~~~~~~~~~~~~~~
In file included from linux/scatterlist.h:8:0,
from scatterlist.c:9:
scatterlist.c:922:18: warning: implicit declaration of function ‘pagefault_disabled’ [-Wimplicit-function-declaration]
WARN_ON_ONCE(!pagefault_disabled());
^
linux/mm.h:23:25: note: in definition of macro ‘WARN_ON_ONCE’
int __ret_warn_on = !!(condition); \
^~~~~~~~~
Link: https://lkml.kernel.org/r/20220118082105.1737320-1-maorg@nvidia.com
Fixes: 723aca208516 ("mm/scatterlist: replace the !preemptible warning in sg_miter_stop()")
Fixes: 0e84f5dbf8d6 ("scatterlist: replace flush_kernel_dcache_page with flush_dcache_page")
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Tested-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
As with the other members of folio, the offset of page->mapping and
folio->mapping must be the same. The compile-time check was
inadvertently removed during development. Add it back.
[willy@infradead.org: changelog redo]
Link: https://lkml.kernel.org/r/20220104011734.21714-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
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memory_failure_dev_pagemap() at the moment assumes base pages (e.g.
dax_lock_page()). For devmap with compound pages fetch the
compound_head in case a tail page memory failure is being handled.
Currently this is a nop, but in the advent of compound pages in
dev_pagemap it allows memory_failure_dev_pagemap() to keep working.
Without this fix memory-failure handling (i.e. MCEs on pmem) with
device-dax configured namespaces will regress (and crash).
Link: https://lkml.kernel.org/r/20211202204422.26777-2-joao.m.martins@oracle.com
Reported-by: Jane Chu <jane.chu@oracle.com>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
In linux-next, IA64_MCA_RECOVERY uses the (new) function
make_task_dead(), which is not exported for use by modules. Instead of
exporting it for one user, convert IA64_MCA_RECOVERY to be a bool
Kconfig symbol.
In a config file from "kernel test robot <lkp@intel.com>" for a
different problem, this linker error was exposed when
CONFIG_IA64_MCA_RECOVERY=m.
Fixes this build error:
ERROR: modpost: "make_task_dead" [arch/ia64/kernel/mca_recovery.ko] undefined!
Link: https://lkml.kernel.org/r/20220124213129.29306-1-rdunlap@infradead.org
Fixes: 0e25498f8cd4 ("exit: Add and use make_task_dead.")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Suggested-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Tony Luck <tony.luck@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
We should unregister the table upon module unload otherwise something
horrible will happen when we load binfmt_misc module again. Also note
that we should keep value returned by register_sysctl_mount_point() and
release it later, otherwise it will leak.
Also, per Christian's comment, to fully restore the old behavior that
won't break userspace the check(binfmt_misc_header) should be
eliminated.
To reproduce:
modprobe binfmt_misc
modprobe -r binfmt_misc
modprobe binfmt_misc
modprobe -r binfmt_misc
modprobe binfmt_misc
resulting in
modprobe: can't load module binfmt_misc (kernel/fs/binfmt_misc.ko): Cannot allocate memory
and an unhappy kernel:
binfmt_misc: Failed to create fs/binfmt_misc sysctl mount point
binfmt_misc: Failed to create fs/binfmt_misc sysctl mount point
BUG: unable to handle page fault for address: fffffbfff8004802
Call Trace:
init_misc_binfmt+0x2d/0x1000 [binfmt_misc]
Link: https://lkml.kernel.org/r/20220124181812.1869535-2-ztong0001@gmail.com
Fixes: 3ba442d5331f ("fs: move binfmt_misc sysctl to its own file")
Signed-off-by: Tong Zhang <ztong0001@gmail.com>
Co-developed-by: Christian Brauner<brauner@kernel.org>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Eric Biederman <ebiederm@xmission.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Iurii Zaikin <yzaikin@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
The CONFIG_SYSCTL=n stub returns the wrong type.
Fixes: ee9efac48a082 ("sysctl: add helper to register a sysctl mount point")
Reported-by: kernel test robot <lkp@intel.com>
Acked-by: Luis Chamberlain <mcgrof@kernel.org>
Cc: Tong Zhang <ztong0001@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
|
|
When PINCTRL_BCM63XX is selected,
and REGMAP is not selected,
Kbuild gives the following warning:
WARNING: unmet direct dependencies detected for GPIO_REGMAP
Depends on [n]: GPIOLIB [=y] && REGMAP [=n]
Selected by [y]:
- PINCTRL_BCM63XX [=y] && PINCTRL [=y]
This is because PINCTRL_BCM63XX
selects GPIO_REGMAP without selecting or depending on
REGMAP, despite GPIO_REGMAP depending on REGMAP.
This unmet dependency bug was detected by Kismet,
a static analysis tool for Kconfig. Please advise
if this is not the appropriate solution.
Signed-off-by: Julian Braha <julianbraha@gmail.com>
Link: https://lore.kernel.org/r/20220117062557.89568-1-julianbraha@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
After commit 266423e60ea1 ("pinctrl: bcm2835: Change init order for gpio
hogs") a few error paths would not unwind properly the registration of
gpio ranges. Correct that by assigning a single error label and goto it
whenever we encounter a fatal error.
Fixes: 266423e60ea1 ("pinctrl: bcm2835: Change init order for gpio hogs")
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220127215033.267227-1-f.fainelli@gmail.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
|
gitolite.kernel.org:pub/scm/linux/kernel/git/pinctrl/intel into fixes
intel-pinctrl for v5.17-4
* Couple of fixes on how Intel driver handles an interrupt
* Revert pin renaming change in ZynqMQ as it appears to be part of
the Device Tree bindings
* Fix ordering of the files in the Makefile
The following is an automated git shortlog grouped by driver:
intel:
- Fix a glitch when updating IRQ flags on a preconfigured line
- fix unexpected interrupt
Place correctly CONFIG_PINCTRL_ST in the Makefile:
- Place correctly CONFIG_PINCTRL_ST in the Makefile
zynqmp:
- Revert "Unify pin naming"
|
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git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip fixes from Marc Zyngier:
- Drop an unused private data field in the AIC driver
- Various fixes to the realtek-rtl driver
- Make the GICv3 ITS driver compile again in !SMP configurations
- Force reset of the GICv3 ITSs at probe time to avoid issues during kexec
- Yet another kfree/bitmap_free conversion
- Various DT updates (Renesas, SiFive)
Link: https://lore.kernel.org/r/20220128174217.517041-1-maz@kernel.org
|
