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Merge tag 'io_uring-5.19-2022-06-24' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A few fixes that should go into the 5.19 release. All are fixing
issues that either happened in this release, or going to stable.
In detail:
- A small series of fixlets for the poll handling, all destined for
stable (Pavel)
- Fix a merge error from myself that caused a potential -EINVAL for
the recv/recvmsg flag setting (me)
- Fix a kbuf recycling issue for partial IO (me)
- Use the original request for the inflight tracking (me)
- Fix an issue introduced this merge window with trace points using a
custom decoder function, which won't work for perf (Dylan)"
* tag 'io_uring-5.19-2022-06-24' of git://git.kernel.dk/linux-block:
io_uring: use original request task for inflight tracking
io_uring: move io_uring_get_opcode out of TP_printk
io_uring: fix double poll leak on repolling
io_uring: fix wrong arm_poll error handling
io_uring: fail links when poll fails
io_uring: fix req->apoll_events
io_uring: fix merge error in checking send/recv addr2 flags
io_uring: mark reissue requests with REQ_F_PARTIAL_IO
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Merge tag 'printk-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux
Pull printk kernel thread revert from Petr Mladek:
"Revert printk console kthreads.
The testing of 5.19 release candidates revealed issues that did not
happen when all consoles were serialized using the console semaphore.
More time is needed to check expectations of the existing console
drivers and be confident that they can be safely used in parallel"
* tag 'printk-for-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
Revert "printk: add functions to prefer direct printing"
Revert "printk: add kthread console printers"
Revert "printk: extend console_lock for per-console locking"
Revert "printk: remove @console_locked"
Revert "printk: Block console kthreads when direct printing will be required"
Revert "printk: Wait for the global console lock when the system is going down"
We use cifs_tcp_ses_lock to protect a lot of things.
Not only does it protect the lists of connections, sessions,
tree connects, open file lists, etc., we also use it to
protect some fields in each of it's entries.
In this case, cifs_mark_ses_for_reconnect takes the
cifs_tcp_ses_lock to traverse the lists, and then calls
cifs_update_iface. However, that can end up calling
cifs_put_tcp_session, which picks up the same lock again.
Avoid this by taking a ref for the session, drop the lock,
and then call update iface.
Also, in cifs_update_iface, avoid nested locking of iface_lock
and chan_lock, as much as possible. When unavoidable, we need
to pick iface_lock first.
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
The IOMMU mailing list will move from lists.linux-foundation.org to
lists.linux.dev. The hard switch of the archive will happen on July
5th, but add the new list now already so that people start using the
list when sending patches. After July 5th the old list will disappear.
Cc: stable@vger.kernel.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Link: https://lore.kernel.org/r/20220624125139.412-1-joro@8bytes.org
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The complete() function may be called even though request is not
completed. In this case, it's necessary to check request status so
as not to set device address wrongly.
Fixes: 10775eb17b ("usb: chipidea: udc: update gadget states according to ch9")
cc: <stable@vger.kernel.org>
Signed-off-by: Xu Yang <xu.yang_2@nxp.com>
Link: https://lore.kernel.org/r/20220623030242.41796-1-xu.yang_2@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Re-reading a recently merged fix to the raw_gadget driver showed that
it inadvertently introduced a double-free bug in a failure pathway.
If raw_ioctl_init() encounters an error after the driver ID number has
been allocated, it deallocates the ID number before returning. But
when dev_free() runs later on, it will then try to deallocate the ID
number a second time.
Closely related to this issue is another error in the recent fix: The
ID number is stored in the raw_dev structure before the code checks to
see whether the structure has already been initialized, in which case
the new ID number would overwrite the earlier value.
The solution to both bugs is to keep the new ID number in a local
variable, and store it in the raw_dev structure only after the check
for prior initialization. No errors can occur after that point, so
the double-free will never happen.
Fixes: f2d8c26068 ("usb: gadget: Fix non-unique driver names in raw-gadget driver")
CC: Andrey Konovalov <andreyknvl@gmail.com>
CC: <stable@vger.kernel.org>
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/YrMrRw5AyIZghN0v@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
The target VMCBs during an intra-host migration need to correctly setup
for running SEV and SEV-ES guests. Add sev_init_vmcb() function and make
sev_es_init_vmcb() static. sev_init_vmcb() uses the now private function
to init SEV-ES guests VMCBs when needed.
Fixes: 0b020f5af0 ("KVM: SEV: Add support for SEV-ES intra host migration")
Fixes: b56639318b ("KVM: SEV: Add support for SEV intra host migration")
Signed-off-by: Peter Gonda <pgonda@google.com>
Cc: Marc Orr <marcorr@google.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: kvm@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Message-Id: <20220623173406.744645-1-pgonda@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Adding the accounting flag when allocating pages within the SEV function,
since these memory pages should belong to individual VM.
No functional change intended.
Signed-off-by: Mingwei Zhang <mizhang@google.com>
Message-Id: <20220623171858.2083637-1-mizhang@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Fixes for v5.19-rc4
- Workaround for parade DSI bridge power sequencing
- Fix for multi-planar YUV format offsets
- Limiting WB modes to max sspp linewidth
- Fixing the supported rotations to add 180 back for IGT
- Fix to handle pm_runtime_get_sync() errors to avoid unclocked access
in the bind() path for dpu driver
- Fix the irq_free() without request issue which was a being hit frequently
in CI.
- Fix to add minimum ICC vote in the msm_mdss pm_resume path to address
bootup splats
- Fix to avoid dereferencing without checking in WB encoder
- Fix to avoid crash during suspend in DP driver by ensuring interrupt
mask bits are updated
- Remove unused code from dpu_encoder_virt_atomic_check()
- Fix to remove redundant init of dsc variable
- Fix to ensure mmap offset is initialized to avoid memory corruption
from unpin/evict
- Fix double runpm disable in probe-defer path
- VMA fenced-unpin fixes
- Fix for WB max-width
- Fix for rare dp resolution change issue
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/CAF6AEGvdsOF1-+WfTWyEyu33XPcvxOCU00G-dz7EF2J+fdyUHg@mail.gmail.com
drm/i915 fixes for v5.19-rc4:
- Revert low voltage SKU check removal to fix display issues
- Apply PLL DCO fraction workaround for ADL-S
- Don't show engine classes not present in client fdinfo
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/87a6a4syrr.fsf@intel.com
properly split the driver between hardware capabilities that wasn't done
properly causing multiple crashes; and a panel quirk for Aya Neo Next
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Merge tag 'drm-misc-fixes-2022-06-23' of git://anongit.freedesktop.org/drm/drm-misc into drm-fixes
Multiple fixes in sun4i for suspend, DDC, DMA setup; A rework of vc4 to
properly split the driver between hardware capabilities that wasn't done
properly causing multiple crashes; and a panel quirk for Aya Neo Next
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <maxime@cerno.tech>
Link: https://patchwork.freedesktop.org/patch/msgid/20220623064152.ubjmnpj7tdejdcw6@houat
This driver is about MXS GPIO support. MXC is a different platform.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Commit 48ec13d36d ("gpio: Properly document parent data union")
is supposed to have fixed a warning from "make htmldocs" regarding
kernel-doc comments to union members. However, the same warning
still remains [1].
Fix the issue by following the example found in section "Nested
structs/unions" of Documentation/doc-guide/kernel-doc.rst.
Signed-off-by: Akira Yokosawa <akiyks@gmail.com>
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 48ec13d36d ("gpio: Properly document parent data union")
Link: https://lore.kernel.org/r/20220606093302.21febee3@canb.auug.org.au/ [1]
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
Cc: Joey Gouly <joey.gouly@arm.com>
Cc: Marc Zyngier <maz@kernel.org>
Tested-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reviewed-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Fix a recent regression preventing some systems from powering off
after saving a hibernation image (Dmitry Osipenko).
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Merge tag 'pm-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fix from Rafael Wysocki:
"Fix a recent regression preventing some systems from powering off
after saving a hibernation image (Dmitry Osipenko)"
* tag 'pm-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: hibernate: Use kernel_can_power_off()
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Merge tag 'random-5.19-rc4-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random
Pull random number generator fixes from Jason Donenfeld:
- A change to schedule the interrupt randomness mixing less often, yet
credit a little more each time, to reduce overhead during interrupt
storms.
- Squelch an undesired pr_warn() from __ratelimit(), which was causing
problems in the reporters' CI.
- A trivial comment fix.
* tag 'random-5.19-rc4-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/crng/random:
random: update comment from copy_to_user() -> copy_to_iter()
random: quiet urandom warning ratelimit suppression message
random: schedule mix_interrupt_randomness() less often
Commit 85e123c27d ("dm mirror log: round up region bitmap size to
BITS_PER_LONG") introduced a regression on 64-bit architectures in the
lvm testsuite tests: lvcreate-mirror, mirror-names and vgsplit-operation.
If the device is shrunk, we need to clear log bits beyond the end of the
device. The code clears bits up to a 32-bit boundary and then calculates
lc->sync_count by summing set bits up to a 64-bit boundary (the commit
changed that; previously, this boundary was 32-bit too). So, it was using
some non-zeroed bits in the calculation and this caused misbehavior.
Fix this regression by clearing bits up to BITS_PER_LONG boundary.
Fixes: 85e123c27d ("dm mirror log: round up region bitmap size to BITS_PER_LONG")
Cc: stable@vger.kernel.org
Reported-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Commit 7dd76d1fee ("dm: improve bio splitting and associated IO
accounting") removed using cloned bio when dm io splitting is needed.
Using bio_trim()+bio_inc_remaining() rather than bio_split()+bio_chain()
causes multiple dm_io instances to share the same original bio, and it
works fine if IOs are completed successfully.
But a regression was caused for the case when BLK_STS_DM_REQUEUE is
returned from any one of DM's cloned bios (whose dm_io share the same
orig_bio). In this BLK_STS_DM_REQUEUE case only the mapped subset of
the original bio for the current exact dm_io needs to be re-submitted.
However, since the original bio is shared among all dm_io instances,
the ->orig_bio actually only represents the last dm_io instance, so
requeue can't work as expected. Also when more than one dm_io is
requeued, the same original bio is requeued from all dm_io's
completion handler, then race is caused.
Fix this issue by still allocating one clone bio for completing io
only, then io accounting can rely on ->orig_bio being unmodified. This
is needed because the dm_io's sector_offset and sectors members are
recorded relative to an unmodified ->orig_bio.
In the future, we can go back to using bio_trim()+bio_inc_remaining()
for dm's io splitting but then delay needing a bio clone only when
handling BLK_STS_DM_REQUEUE, but that approach is a bit complicated
(so it needs a development cycle):
1) bio clone needs to be done in task context
2) a block interface for unwinding bio is required
Fixes: 7dd76d1fee ("dm: improve bio splitting and associated IO accounting")
Reported-by: Benjamin Marzinski <bmarzins@redhat.com>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
- Check for NULL in kretprobe_dispatcher()
NULL can now be passed in, make sure it can handle it
- Clean up unneeded #endif #ifdef of the same preprocessor check in the
middle of the block.
- Comment clean up
- Remove unneeded initialization of the "ret" variable in
__trace_uprobe_create()
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Merge tag 'trace-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- Check for NULL in kretprobe_dispatcher()
NULL can now be passed in, make sure it can handle it
- Clean up unneeded #endif #ifdef of the same preprocessor
check in the middle of the block.
- Comment clean up
- Remove unneeded initialization of the "ret" variable in
__trace_uprobe_create()
* tag 'trace-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing/uprobes: Remove unwanted initialization in __trace_uprobe_create()
tracefs: Fix syntax errors in comments
tracing: Simplify conditional compilation code in tracing_set_tracer()
tracing/kprobes: Check whether get_kretprobe() returns NULL in kretprobe_dispatcher()
- Mark a folio accessed at the right time (Yu Kuai)
- Fix a race for folios being replaced in the middle of a read (Brian Foster)
- Clear folio->private in more places (Xiubo Li)
- Take the invalidate_lock in page_cache_ra_order() (Alistair Popple)
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Merge tag 'folio-5.19b' of git://git.infradead.org/users/willy/pagecache
Pull pagecache fixes from Matthew Wilcox:
"Four folio-related fixes for 5.19:
- Mark a folio accessed at the right time (Yu Kuai)
- Fix a race for folios being replaced in the middle of a read (Brian
Foster)
- Clear folio->private in more places (Xiubo Li)
- Take the invalidate_lock in page_cache_ra_order() (Alistair Popple)"
* tag 'folio-5.19b' of git://git.infradead.org/users/willy/pagecache:
filemap: Fix serialization adding transparent huge pages to page cache
mm: Clear page->private when splitting or migrating a page
filemap: Handle sibling entries in filemap_get_read_batch()
filemap: Correct the conditions for marking a folio as accessed
In prior kernels, we did file assignment always at prep time. This meant
that req->task == current. But after deferring that assignment and then
pushing the inflight tracking back in, we've got the inflight tracking
using current when it should in fact now be using req->task.
Fixup that error introduced by adding the inflight tracking back after
file assignments got modifed.
Fixes: 9cae36a094 ("io_uring: reinstate the inflight tracking")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
For the last few years I have been the sole maintainer of KVM, albeit
getting serious help from all the people who have reviewed hundreds of
patches. The volume of KVM x86 alone has gotten to the point where one
maintainer is not enough; especially if that maintainer is not doing it
full time and if they want to keep up with the evolution of ARM64 and
RISC-V at both the architecture and the hypervisor level.
So, this patch is the first step in restoring double maintainership
or even transitioning to the submaintainer model of other architectures.
The changes here were mostly proposed by Sean offlist and they are twofold:
- revisiting the set of KVM x86 reviewers. It's important to have an
an accurate list of people that are actively reviewing patches ("R"),
as well as people that are able to act on bug reports ("M"). Otherwise,
voids to be filled are not easily visible. The proposal is to split
KVM on Hyper-V, which is where Vitaly has been the main contributor
for quite some time now; likewise for KVM paravirt support, which
has been the main interest of Wanpeng and to which Vitaly has also
contributed (e.g., for async page faults). Jim and Joerg have not been
particularly active (though Joerg has worked on guest support for AMD
SEV); knowing them a bit, I can't imagine they would object to their
removal or even be surprised, but please speak up if you do.
- promoting Sean to maintainer for KVM x86 host support. While for
now this changes little, let's treat it as a harbinger for future
changes. The plan is that I would keep the final integration testing
for quite some time, and probably focus more on -rc work. This will
give me more time to clean up my ad hoc setup and moving towards a
more public CI, with Sean focusing instead on next-release patches,
and the testing up to where kvm-unit-tests and selftests pass. In
order to facilitate collaboration between Sean and myself, we'll
also formalize a bit more the various branches of kvm.git.
Nothing is going to change with respect to handling pull requests to Linus
and from other architectures, as well as maintainance of the generic code
(which I expect and hope to be more important as architectures try to
share more code) and documentation. However, it's not a coincidence
that my entry is now the last for x86, ready to be demoted to reviewer
if/when the right time comes.
Suggested-by: Sean Christopherson <seanjc@google.com>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Cc: kvm@vger.kernel.org
Cc: Sean Christopherson <seanjc@google.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Wanpeng Li <wanpengli@tencent.com>
Cc: Jim Mattson <jmattson@google.com>
Cc: Joerg Roedel <joro@8bytes.org>
Acked-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts commit 2bb2b7b57f.
The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.
It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.
printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.
Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-7-pmladek@suse.com
This reverts commit 09c5ba0aa2.
This reverts commit b87f02307d.
The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.
It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.
printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.
Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-6-pmladek@suse.com
This reverts commit 8e27473211.
The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.
It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.
printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.
Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-5-pmladek@suse.com
This reverts commit ab406816fc.
The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.
It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.
printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.
Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-4-pmladek@suse.com
This reverts commit c3230283e2.
The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.
It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.
printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.
Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-3-pmladek@suse.com
This reverts commit b87f02307d.
The testing of 5.19 release candidates revealed missing synchronization
between early and regular console functionality.
It would be possible to start the console kthreads later as a workaround.
But it is clear that console lock serialized console drivers between
each other. It opens a big area of possible problems that were not
considered by people involved in the development and review.
printk() is crucial for debugging kernel issues and console output is
very important part of it. The number of consoles is huge and a proper
review would take some time. As a result it need to be reverted for 5.19.
Link: https://lore.kernel.org/r/YrBdjVwBOVgLfHyb@alley
Signed-off-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20220623145157.21938-2-pmladek@suse.com
Commit 793917d997 ("mm/readahead: Add large folio readahead")
introduced support for using large folios for filebacked pages if the
filesystem supports it.
page_cache_ra_order() was introduced to allocate and add these large
folios to the page cache. However adding pages to the page cache should
be serialized against truncation and hole punching by taking
invalidate_lock. Not doing so can lead to data races resulting in stale
data getting added to the page cache and marked up-to-date. See commit
730633f0b7 ("mm: Protect operations adding pages to page cache with
invalidate_lock") for more details.
This issue was found by inspection but a testcase revealed it was
possible to observe in practice on XFS. Fix this by taking
invalidate_lock in page_cache_ra_order(), to mirror what is done for the
non-thp case in page_cache_ra_unbounded().
Signed-off-by: Alistair Popple <apopple@nvidia.com>
Fixes: 793917d997 ("mm/readahead: Add large folio readahead")
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
In our efforts to remove uses of PG_private, we have found folios with
the private flag clear and folio->private not-NULL. That is the root
cause behind 642d51fb07 ("ceph: check folio PG_private bit instead
of folio->private"). It can also affect a few other filesystems that
haven't yet reported a problem.
compaction_alloc() can return a page with uninitialised page->private,
and rather than checking all the callers of migrate_pages(), just zero
page->private after calling get_new_page(). Similarly, the tail pages
from split_huge_page() may also have an uninitialised page->private.
Reported-by: Xiubo Li <xiubli@redhat.com>
Tested-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Two different events such as pai_crypto/KM_AES_128/ and
pai_crypto/KM_AES_192/ can be installed multiple times on the same CPU
and the events are executed concurrently:
# perf stat -e pai_crypto/KM_AES_128/ -C0 -a -- sleep 5 &
# sleep 2
# perf stat -e pai_crypto/KM_AES_192/ -C0 -a -- true
This results in the first event being installed two times with two seconds
delay. The kernel does install the second event after the first
event has been deleted and re-added, as can be seen in the traces:
13:48:47.600350 paicrypt_start event 0x1007 (event KM_AES_128)
13:48:49.599359 paicrypt_stop event 0x1007 (event KM_AES_128)
13:48:49.599198 paicrypt_start event 0x1007
13:48:49.599199 paicrypt_start event 0x1008
13:48:49.599921 paicrypt_event_destroy event 0x1008
13:48:52.601507 paicrypt_event_destroy event 0x1007
This is caused by functions event_sched_in() and event_sched_out() which
call the PMU's add() and start() functions on schedule_in and the PMU's
stop() and del() functions on schedule_out. This is correct for events
attached to processes. The pai_crypto events are system-wide events
and not attached to processes.
Since the kernel common code can not be changed easily, fix this issue
and do not reset the event count value to zero each time the event is
added and started. Instead use a flag and zero the event count value
only when called immediately after the event has been initialized.
Therefore only the first invocation of the the event's add() function
initializes the event count value to zero. The following invocations
of the event's add() function leave the current event count value
untouched.
Fixes: 39d62336f5 ("s390/pai: add support for cryptography counters")
Reported-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
The pai_crypto PMU has to check the event number. It has to be in
the supported range. This is not the case, the lower limit is not
checked. Fix this and obey the lower limit.
Fixes: 39d62336f5 ("s390/pai: add support for cryptography counters")
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Suggested-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Reviewed-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Events CPU_CYCLES and INSTRUCTIONS can be submitted with two different
perf_event attribute::type values:
- PERF_TYPE_HARDWARE: when invoked via perf tool predefined events name
cycles or cpu-cycles or instructions.
- pmu->type: when invoked via perf tool event name cpu_cf/CPU_CYLCES/ or
cpu_cf/INSTRUCTIONS/. This invocation also selects the PMU to which
the event belongs.
Handle both type of invocations identical for events CPU_CYLCES and
INSTRUCTIONS. They address the same hardware.
The result is different when event modifier exclude_kernel is also set.
Invocation with event modifier for user space event counting fails.
Output before:
# perf stat -e cpum_cf/cpu_cycles/u -- true
Performance counter stats for 'true':
<not supported> cpum_cf/cpu_cycles/u
0.000761033 seconds time elapsed
0.000076000 seconds user
0.000725000 seconds sys
#
Output after:
# perf stat -e cpum_cf/cpu_cycles/u -- true
Performance counter stats for 'true':
349,613 cpum_cf/cpu_cycles/u
0.000844143 seconds time elapsed
0.000079000 seconds user
0.000800000 seconds sys
#
Fixes: 6a82e23f45 ("s390/cpumf: Adjust registration of s390 PMU device drivers")
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
[agordeev@linux.ibm.com corrected commit ID of Fixes commit]
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Callback copy_oldmem_page() returns either error code or zero.
Instead, it should return the error code or number of bytes copied.
Fixes: df9694c797 ("s390/dump: streamline oldmem copy functions")
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Tested-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
In case old memory was successfully copied the passed iterator
should be advanced as well. Currently copy_oldmem_page() is
always called with single-segment iterator. Should that ever
change - copy_oldmem_user and copy_oldmem_kernel() functions
would need a rework to deal with multi-segment iterators.
Fixes: 5d8de293c2 ("vmcore: convert copy_oldmem_page() to take an iov_iter")
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Tested-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
If a platform device's remove callback returns non-zero, the device core
emits a warning and still removes the device and calls the devm cleanup
callbacks.
So it's not save to not unregister the gpiochip because on the next request
to a GPIO the driver accesses kfree()'d memory. Also if an IRQ triggers,
the freed memory is accessed.
Instead rely on the GPIO framework to ensure that after gpiochip_remove()
all GPIOs are freed and so the corresponding IRQs are unmapped.
This is a preparation for making platform remove callbacks return void.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
The TP_printk macro's are not supposed to use custom code ([1]) or else
tools such as perf cannot use these events.
Convert the opcode string representation to use the __string wiring that
the event framework provides ([2]).
[1]: https://lwn.net/Articles/379903/
[2]: https://lwn.net/Articles/381064/
Fixes: 033b87d24f ("io_uring: use the text representation of ops in trace")
Signed-off-by: Dylan Yudaken <dylany@fb.com>
Link: https://lore.kernel.org/r/20220623083743.2648321-1-dylany@fb.com
[axboe: fixup spurious removal of sq_thread assignment]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This error path returns 1, but it should instead propagate the negative
error code from winbond_sio_enter().
Fixes: a0d6500941 ("gpio: winbond: Add driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Meteor Lake TCSS(Type-C Subsystem) xHCI needs to be runtime suspended
whenever possible to allow the TCSS hardware block to enter D3cold and
thus save energy.
Cc: stable@kernel.org
Signed-off-by: Utkarsh Patel <utkarsh.h.patel@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220623111945.1557702-5-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
In the same way as Intel Alder Lake TCSS (Type-C Subsystem) the Raptor
Lake TCSS xHCI needs to be runtime suspended whenever possible to
allow the TCSS hardware block to enter D3cold and thus save energy.
Cc: stable@kernel.org
Signed-off-by: Tanveer Alam <tanveer1.alam@intel.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220623111945.1557702-4-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
If ports are not turned off in shutdown then runtime suspended
self-powered USB devices may survive in U3 link state over S5.
During subsequent boot, if firmware sends an IPC command to program
the port in DISCONNECT state, it will time out, causing significant
delay in the boot time.
Turning off roothub port power is also recommended in xhci
specification 4.19.4 "Port Power" in the additional note.
Cc: stable@vger.kernel.org
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220623111945.1557702-3-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
irq is disabled in xhci_quiesce(called by xhci_halt, with bit:2 cleared
in USBCMD register), but xhci_run(called by usb_add_hcd) re-enable it.
It's possible that you will receive thousands of interrupt requests
after initialization for 2.0 roothub. And you will get a lot of
warning like, "xHCI dying, ignoring interrupt. Shouldn't IRQs be
disabled?". This amount of interrupt requests will cause the entire
system to freeze.
This problem was first found on a device with ASM2142 host controller
on it.
[tidy up old code while moving it, reword header -Mathias]
Cc: stable@kernel.org
Signed-off-by: Hongyu Xie <xiehongyu1@kylinos.cn>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Link: https://lore.kernel.org/r/20220623111945.1557702-2-mathias.nyman@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
- Fix a regression with pKVM when kmemleak is enabled
- Add Oliver Upton as an official KVM/arm64 reviewer
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Merge tag 'kvmarm-fixes-5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm into HEAD
KVM/arm64 fixes for 5.19, take #2
- Fix a regression with pKVM when kmemleak is enabled
- Add Oliver Upton as an official KVM/arm64 reviewer
The selftests, when built with newer versions of clang, is found
to have over optimized guests' ucall() function, and eliminating
the stores for uc.cmd (perhaps due to no immediate readers). This
resulted in the userspace side always reading a value of '0', and
causing multiple test failures.
As a result, prevent the compiler from optimizing the stores in
ucall() with WRITE_ONCE().
Suggested-by: Ricardo Koller <ricarkol@google.com>
Suggested-by: Reiji Watanabe <reijiw@google.com>
Signed-off-by: Raghavendra Rao Ananta <rananta@google.com>
Message-Id: <20220615185706.1099208-1-rananta@google.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Here are some new modem device ids and support for further PL2303
device types.
All but the final commit (RM500K device id) have been in linux-next and
with no reported issues.
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Merge tag 'usb-serial-5.19-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:
USB-serial fixes for 5.19-rc4
Here are some new modem device ids and support for further PL2303
device types.
All but the final commit (RM500K device id) have been in linux-next and
with no reported issues.
* tag 'usb-serial-5.19-rc4' of https://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial:
USB: serial: option: add Quectel RM500K module support
USB: serial: option: add Quectel EM05-G modem
USB: serial: pl2303: add support for more HXN (G) types
USB: serial: option: add Telit LE910Cx 0x1250 composition
Current release - regressions:
- netfilter: cttimeout: fix slab-out-of-bounds read in cttimeout_net_exit
Current release - new code bugs:
- bpf: ftrace: keep address offset in ftrace_lookup_symbols
- bpf: force cookies array to follow symbols sorting
Previous releases - regressions:
- ipv4: ping: fix bind address validity check
- tipc: fix use-after-free read in tipc_named_reinit
- eth: veth: add updating of trans_start
Previous releases - always broken:
- sock: redo the psock vs ULP protection check
- netfilter: nf_dup_netdev: fix skb_under_panic
- bpf: fix request_sock leak in sk lookup helpers
- eth: igb: fix a use-after-free issue in igb_clean_tx_ring
- eth: ice: prohibit improper channel config for DCB
- eth: at803x: fix null pointer dereference on AR9331 phy
- eth: virtio_net: fix xdp_rxq_info bug after suspend/resume
Misc:
- eth: hinic: replace memcpy() with direct assignment
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Paolo Abeni:
"Including fixes from bpf and netfilter.
Current release - regressions:
- netfilter: cttimeout: fix slab-out-of-bounds read in
cttimeout_net_exit
Current release - new code bugs:
- bpf: ftrace: keep address offset in ftrace_lookup_symbols
- bpf: force cookies array to follow symbols sorting
Previous releases - regressions:
- ipv4: ping: fix bind address validity check
- tipc: fix use-after-free read in tipc_named_reinit
- eth: veth: add updating of trans_start
Previous releases - always broken:
- sock: redo the psock vs ULP protection check
- netfilter: nf_dup_netdev: fix skb_under_panic
- bpf: fix request_sock leak in sk lookup helpers
- eth: igb: fix a use-after-free issue in igb_clean_tx_ring
- eth: ice: prohibit improper channel config for DCB
- eth: at803x: fix null pointer dereference on AR9331 phy
- eth: virtio_net: fix xdp_rxq_info bug after suspend/resume
Misc:
- eth: hinic: replace memcpy() with direct assignment"
* tag 'net-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (47 commits)
net: openvswitch: fix parsing of nw_proto for IPv6 fragments
sock: redo the psock vs ULP protection check
Revert "net/tls: fix tls_sk_proto_close executed repeatedly"
virtio_net: fix xdp_rxq_info bug after suspend/resume
igb: Make DMA faster when CPU is active on the PCIe link
net: dsa: qca8k: reduce mgmt ethernet timeout
net: dsa: qca8k: reset cpu port on MTU change
MAINTAINERS: Add a maintainer for OCP Time Card
hinic: Replace memcpy() with direct assignment
Revert "drivers/net/ethernet/neterion/vxge: Fix a use-after-free bug in vxge-main.c"
net: phy: smsc: Disable Energy Detect Power-Down in interrupt mode
ice: ethtool: Prohibit improper channel config for DCB
ice: ethtool: advertise 1000M speeds properly
ice: Fix switchdev rules book keeping
ice: ignore protocol field in GTP offload
netfilter: nf_dup_netdev: add and use recursion counter
netfilter: nf_dup_netdev: do not push mac header a second time
selftests: netfilter: correct PKTGEN_SCRIPT_PATHS in nft_concat_range.sh
net/tls: fix tls_sk_proto_close executed repeatedly
erspan: do not assume transport header is always set
...
- fix the mixed up CRIMS/CRWMS constants (Joel Granados)
- add another broken identifier quirk (Leo Savernik)
- fix up a quirk because Samsung reuses PCI IDs over different products
(me)
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Merge tag 'nvme-5.19-2022-06-23' of git://git.infradead.org/nvme into block-5.19
Pull NVMe fixes from Christoph:
"nvme fixes for Linux 5.19
- fix the mixed up CRIMS/CRWMS constants (Joel Granados)
- add another broken identifier quirk (Leo Savernik)
- fix up a quirk because Samsung reuses PCI IDs over different products
(Christoph Hellwig)"
* tag 'nvme-5.19-2022-06-23' of git://git.infradead.org/nvme:
nvme: move the Samsung X5 quirk entry to the core quirks
nvme: fix the CRIMS and CRWMS definitions to match the spec
nvme: add a bogus subsystem NQN quirk for Micron MTFDKBA2T0TFH
Linus Torvalds