Syzbot managed to come up with a filesystem where check/repair got
rather confused at finding a reflink pointer in the inodes btree.
Currently, the "key allowed in this btree" checks only apply at commit
time, not read time - for forwards compatibility. It seems this is too
loose.
Now, strict key type allowed checks apply:
- at commit time (no forward compatibility issues)
- for btree node pointers
- if it's a known btree, known key type, and the key type has the
"BKEY_TYPE_strict_btree_checks" flag.
This means we still have the option of using generic key types - e.g.
KEY_TYPE_error, KEY_TYPE_set - on more existing btrees in the future,
while most key types that are intended for only a specific btree get
stricter checks.
Reported-by: syzbot+baee8591f336cab0958b@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
We now more often do repair automatically, without the user invoking
fsck - and sometimes that can involve fixing lots of errors, so let's
avoid flooding the dmesg log.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Don't set JOURNAL_running until we're also calling
journal_space_available() for the first time.
If JOURNAL_running is set, shutdown will write an empty journal entry -
but this will hit an assert in journal_entry_open() if we've never
called journal_space_available().
Reported-by: syzbot+53bb24d476ef8368a7f0@syzkaller.appspotmail.com
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
I had left the warning around but as a non-fatal error to get my gcc-15
builds going, but fixed up some of the most annoying warning cases so
that it wouldn't be *too* verbose.
Because I like the _concept_ of the warning, even if I detested the
implementation to shut it up.
It turns out the implementation to shut it up is even more broken than I
thought, and my "shut up most of the warnings" patch just caused fatal
errors on gcc-14 instead.
I had tested with clang, but when I upgrade my development environment,
I try to do it on all machines because I hate having different systems
to maintain, and hadn't realized that gcc-14 now had issues.
The ACPI case is literally why I wanted to have a *type* that doesn't
trigger the warning (see commit d5d45a7f26: "gcc-15: make
'unterminated string initialization' just a warning"), instead of
marking individual places as "__nonstring".
But gcc-14 doesn't like that __nonstring location that shut gcc-15 up,
because it's on an array of char arrays, not on one single array:
drivers/acpi/tables.c:399:1: error: 'nonstring' attribute ignored on objects of type 'const char[][4]' [-Werror=attributes]
399 | static const char table_sigs[][ACPI_NAMESEG_SIZE] __initconst __nonstring = {
| ^~~~~~
and my attempts to nest it properly with a type had failed, because of
how gcc doesn't like marking the types as having attributes, only
symbols.
There may be some trick to it, but I was already annoyed by the bad
attribute design, now I'm just entirely fed up with it.
I wish gcc had a proper way to say "this type is a *byte* array, not a
string".
The obvious thing would be to distinguish between "char []" and an
explicitly signed "unsigned char []" (as opposed to an implicitly
unsigned char, which is typically an architecture-specific default, but
for the kernel is universal thanks to '-funsigned-char').
But any "we can typedef a 8-bit type to not become a string just because
it's an array" model would be fine.
But "__attribute__((nonstring))" is sadly not that sane model.
Reported-by: Chris Clayton <chris2553@googlemail.com>
Fixes: 4b4bd8c50f ("gcc-15: acpi: sprinkle random '__nonstring' crumbles around")
Fixes: d5d45a7f26 ("gcc-15: make 'unterminated string initialization' just a warning")
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
RK3588 integrates the Analogix eDP 1.3 TX controller IP and the HDMI/eDP
TX Combo PHY based on a Samsung IP block. There are also two independent
eDP display interface with different address on RK3588 Soc.
The patch currently adds only the basic support, specifically RGB output
up to 4K@60Hz, without the tests for audio, PSR and other eDP 1.3 specific
features.
In additon, the above Analogix IP has always been utilized as eDP on
Rockchip platform, despite its capability to also support the DP v1.2.
Therefore, the newly added logs will contain the term 'edp' rather than
'dp'. And the newly added 'apb' reset control is to ensure the APB bus
of eDP controller works well on the RK3588 SoC.
Acked-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://lore.kernel.org/r/20250310104114.2608063-12-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Compared with RK3288/RK3399, the HBR2 link rate support is the main
improvement of RK3588 eDP TX controller, and there are also two
independent eDP display interfaces on RK3588 Soc.
The newly added 'apb' reset is to ensure the APB bus of eDP controller
works well on the RK3588 SoC.
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://lore.kernel.org/r/20250310104114.2608063-10-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Move drm_of_find_panel_or_bridge() a little later and combine it with
component_add() into a new function rockchip_dp_link_panel(). The function
will serve as done_probing() callback of devm_of_dp_aux_populate_bus(),
aiding to support for obtaining the eDP panel via the DP AUX bus.
If failed to get the panel from the DP AUX bus, it will then try the other
way to get panel information through the platform bus.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20250310104114.2608063-9-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Add analogix_dpaux_wait_hpd_asserted() to help confirm the HPD state
before doing AUX transfers.
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20250310104114.2608063-8-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
The main modification is moving the DP AUX initialization from function
analogix_dp_bind() to analogix_dp_probe(). In order to get the EDID of
eDP panel during probing, it is also needed to advance PM operations to
ensure that eDP controller and phy are prepared for AUX transmission.
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/20250310104114.2608063-7-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Add two new functions: one to find &analogix_dp_device.plat_data via
&drm_dp_aux, and the other to get &analogix_dp_device.aux. Both of them
serve for the function of getting panel from DP AUX bus, which is why
they are included in a single commit.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://lore.kernel.org/r/20250310104114.2608063-6-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
According to Documentation/devicetree/bindings/display/dp-aux-bus.yaml,
it is a good way to get panel through the DP AUX bus.
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://lore.kernel.org/r/20250310104114.2608063-5-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Add support to configurate link rate, lane count, voltage swing and
pre-emphasis with phy_configure(). It is helpful in application scenarios
where analogix controller is mixed with the phy of other vendors.
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://lore.kernel.org/r/20250310104114.2608063-4-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Remove the check related to CONFIG_PM in order to make the code more
concise, as the CONFIG_PM should be a required option for many drivers.
In addition, it is preferable to use devm_pm_runtime_enable() instead of
manually invoking pm_runtime_enable() followed by pm_runtime_disable().
Suggested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://lore.kernel.org/r/20250310104114.2608063-3-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
The IRQF_NO_AUTOEN can be used for the drivers that don't want
interrupts to be enabled automatically via devm_request_threaded_irq().
Using this flag can provide be more robust compared to the way of
calling disable_irq() after devm_request_threaded_irq() without the
IRQF_NO_AUTOEN flag.
Suggested-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Damon Ding <damon.ding@rock-chips.com>
Link: https://lore.kernel.org/r/20250310104114.2608063-2-damon.ding@rock-chips.com
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
The C sequence points are complicated things, and gcc-15 has apparently
added a warning for the case where an object is both used and modified
multiple times within the same sequence point.
That's a great warning.
Or rather, it would be a great warning, except gcc-15 seems to not
really be very exact about it, and doesn't notice that the modification
are to two entirely different members of the same object: the array
counter and the array entries.
So that seems kind of silly.
That said, the code that gcc complains about is unnecessarily
complicated, so moving the array counter update into a separate
statement seems like the most straightforward fix for these warnings:
drivers/net/wireless/intel/iwlwifi/mld/d3.c: In function ‘iwl_mld_set_netdetect_info’:
drivers/net/wireless/intel/iwlwifi/mld/d3.c:1102:66: error: operation on ‘netdetect_info->n_matches’ may be undefined [-Werror=sequence-point]
1102 | netdetect_info->matches[netdetect_info->n_matches++] = match;
| ~~~~~~~~~~~~~~~~~~~~~~~~~^~
drivers/net/wireless/intel/iwlwifi/mld/d3.c:1120:58: error: operation on ‘match->n_channels’ may be undefined [-Werror=sequence-point]
1120 | match->channels[match->n_channels++] =
| ~~~~~~~~~~~~~~~~~^~
side note: the code at that second warning is actively buggy, and only
works on little-endian machines that don't do strict alignment checks.
The code casts an array of integers into an array of unsigned long in
order to use our bitmap iterators. That happens to work fine on any
sane architecture, but it's still wrong.
This does *not* fix that more serious problem. This only splits the two
assignments into two statements and fixes the compiler warning. I need
to get rid of the new warnings in order to be able to actually do any
build testing.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
All of these cases are perfectly valid and good traditional C, but hit
by the "you're not NUL-terminating your byte array" warning.
And none of the cases want any terminating NUL character.
Mark them __nonstring to shut up gcc-15 (and in the case of the ak8974
magnetometer driver, I just removed the explicit array size and let gcc
expand the 3-byte and 6-byte arrays by one extra byte, because it was
the simpler change).
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This removes two cases of explicit NUL padding that now causes warnings
because of '-Wunterminated-string-initialization' being part of -Wextra
in gcc-15.
Gcc is being silly in this case when it says that it truncates a NUL
terminator, because in these cases there were _multiple_ NUL characters.
But we can get rid of the warning by just simplifying the two
initializers that trigger the warning for me, so this does exactly that.
I'm not sure why the power supply code did that odd
.attr_name = #_name "\0",
pattern: it was introduced in commit 2cabeaf151 ("power: supply: core:
Cleanup power supply sysfs attribute list"), but that 'attr_name[]'
field is an explicitly sized character array in a statically initialized
variable, and a string initializer always has a terminating NUL _and_
statically initialized character arrays are zero-padded anyway, so it
really seems to be rather extraneous belt-and-suspenders.
The zero_uuid[16] initialization in drivers/md/bcache/super.c makes
perfect sense, but it isn't necessary for the same reasons, and not
worth the new gcc warning noise.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is not great: I'd much rather introduce a typedef that is a "ACPI
name byte buffer", and use that to mark these special 4-byte ACPI names
that do not use NUL termination.
But as noted in the previous commit ("gcc-15: make 'unterminated string
initialization' just a warning") gcc doesn't actually seem to support
that notion, so instead you have to just mark every single array
declaration individually.
So this is not pretty, but this gets rid of the bulk of the annoying
warnings during an allmodconfig build for me.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
gcc-15 enabling -Wunterminated-string-initialization in -Wextra by
default was done with the best intentions, but the warning is still
quite broken.
What annoys me about the warning is that this is a very traditional AND
CORRECT way to initialize fixed byte arrays in C:
unsigned char hex[16] = "0123456789abcdef";
and we use this all over the kernel. And the warning is fine, but gcc
developers apparently never made a reasonable way to disable it. As is
(sadly) tradition with these things.
Yes, there's "__attribute__((nonstring))", and we have a macro to make
that absolutely disgusting syntax more palatable (ie the kernel syntax
for that monstrosity is just "__nonstring").
But that attribute is misdesigned. What you'd typically want to do is
tell the compiler that you are using a type that isn't a string but a
byte array, but that doesn't work at all:
warning: ‘nonstring’ attribute does not apply to types [-Wattributes]
and because of this fundamental mis-design, you then have to mark each
instance of that pattern.
This is particularly noticeable in our ACPI code, because ACPI has this
notion of a 4-byte "type name" that gets used all over, and is exactly
this kind of byte array.
This is a sad oversight, because the warning is useful, but really would
be so much better if gcc had also given a sane way to indicate that we
really just want a byte array type at a type level, not the broken "each
and every array definition" level.
So now instead of creating a nice "ACPI name" type using something like
typedef char acpi_name_t[4] __nonstring;
we have to do things like
char name[ACPI_NAMESEG_SIZE] __nonstring;
in every place that uses this concept and then happens to have the
typical initializers.
This is annoying me mainly because I think the warning _is_ a good
warning, which is why I'm not just turning it off in disgust. But it is
hampered by this bad implementation detail.
[ And obviously I'm doing this now because system upgrades for me are
something that happen in the middle of the release cycle: don't do it
before or during travel, or just before or during the busy merge
window period. ]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
During initialisation of Focusrite USB audio interfaces, -EPROTO is
sometimes returned from usb_set_interface(), which sometimes prevents
the device from working: subsequent usb_set_interface() and
uac_clock_source_is_valid() calls fail.
This patch adds up to 5 retries in endpoint_set_interface(), with a
delay starting at 5ms and doubling each time. 5 retries was chosen to
allow for longer than expected waits for the interface to start
responding correctly; in testing, a single 5ms delay was sufficient to
fix the issue.
Closes: https://github.com/geoffreybennett/fcp-support/issues/2
Cc: stable@vger.kernel.org
Signed-off-by: Geoffrey D. Bennett <g@b4.vu>
Link: https://patch.msgid.link/Z//7s9dKsmVxHzY2@m.b4.vu
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The speaker doesn't mute when plugged headphone.
This platform support 4ch speakers.
The speaker pin 0x14 wasn't fill verb table.
After assigned model ALC245_FIXUP_HP_SPECTRE_X360_EU0XXX.
The speaker can mute when headphone was plugged.
Fixes: aa8e3ef4fe ("ALSA: hda/realtek: Add quirks for various HP ENVY models")
Signed-off-by: Kailang Yang <kailang@realtek.com>
Link: https://lore.kernel.org/eb4c14a4d85740069c909e756bbacb0e@realtek.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The old development toolchain binaries were hosted in the or1k-gcc
development github repo release page. However, now that we have all
code upstream I cut releases from stable upstream tarballs. It does not
make sense to tag the or1k-gcc github repo releases for these stable
releases.
Update the toolchain binaries URL to point to where they are now hosted
on the or1k-toolchain-build github release page.
Signed-off-by: Stafford Horne <shorne@gmail.com>
The librecores.org mailing list was replaced with vger.kernel.org last
year after the old mail server went offline. Update the docs to reflect
the new list.
Signed-off-by: Stafford Horne <shorne@gmail.com>
Add cacheinfo support for OpenRISC.
Currently, a few CPU cache attributes pertaining to OpenRISC processors
are exposed along with other unrelated CPU attributes in the procfs file
system (/proc/cpuinfo). However, a few cache attributes remain unexposed.
Provide a mechanism that the generic cacheinfo infrastructure can employ
to expose these attributes via the sysfs file system. These attributes
can then be exposed in /sys/devices/system/cpu/cpuX/cache/indexN. Move
the implementation to pull cache attributes from the processor's
registers from arch/openrisc/kernel/setup.c with a few modifications.
This implementation is based on similar work done for MIPS and LoongArch.
Link: https://raw.githubusercontent.com/openrisc/doc/master/openrisc-arch-1.4-rev0.pdf
Signed-off-by: Sahil Siddiq <sahilcdq0@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
According to the OpenRISC architecture manual, the dcache and icache may
not be present. When these caches are present, the invalidate and flush
registers may be absent. The current implementation does not perform
checks to verify their presence before utilizing cache registers, or
invalidating and flushing cache blocks.
Introduce new functions to detect the presence of cache components and
related special-purpose registers.
There are a few places where a range of addresses have to be flushed or
invalidated and the implementation is duplicated. Introduce new utility
functions and macros that generalize this implementation and reduce
duplication.
Signed-off-by: Sahil Siddiq <sahilcdq0@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
The "cpuinfo_or1k" structure currently has identical data members for
different cache components.
Remove these fields out of struct cpuinfo_or1k and into its own struct.
This reduces duplication while keeping cpuinfo_or1k extensible so more
cache descriptors can be added in the future.
Also add a new field "sets" to the new structure.
Signed-off-by: Sahil Siddiq <sahilcdq0@gmail.com>
Signed-off-by: Stafford Horne <shorne@gmail.com>
or aren't considered necessary for -stable kernels.
All patches are basically for MM although five are alterations to
MAINTAINERS.
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Merge tag 'mm-hotfixes-stable-2025-04-19-21-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc hotfixes from Andrew Morton:
"16 hotfixes. 2 are cc:stable and the remainder address post-6.14
issues or aren't considered necessary for -stable kernels.
All patches are basically for MM although five are alterations to
MAINTAINERS"
[ Basic counting skills are clearly not a strictly necessary requirement
for kernel maintainers. - Linus ]
* tag 'mm-hotfixes-stable-2025-04-19-21-24' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
MAINTAINERS: add section for locking of mm's and VMAs
mm: vmscan: fix kswapd exit condition in defrag_mode
mm: vmscan: restore high-cpu watermark safety in kswapd
MAINTAINERS: add Pedro as reviewer to the MEMORY MAPPING section
mm/memory: move sanity checks in do_wp_page() after mapcount vs. refcount stabilization
mm, hugetlb: increment the number of pages to be reset on HVO
writeback: fix false warning in inode_to_wb()
docs: ABI: replace mcroce@microsoft.com with new Meta address
mm/gup: fix wrongly calculated returned value in fault_in_safe_writeable()
MAINTAINERS: add memory advice section
MAINTAINERS: add mmap trace events to MEMORY MAPPING
mm: memcontrol: fix swap counter leak from offline cgroup
MAINTAINERS: add MM subsection for the page allocator
MAINTAINERS: update SLAB ALLOCATOR maintainers
fs/dax: fix folio splitting issue by resetting old folio order + _nr_pages
mm/page_alloc: fix deadlock on cpu_hotplug_lock in __accept_page()
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Merge tag 'vfs-6.15-rc3.fixes.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull vfs fixes from Christian Brauner:
- Revert the hfs{plus} deprecation warning that's also included in this
pull request. The commit introducing the deprecation warning resides
rather early in this branch. So simply dropping it would've rebased
all other commits which I decided to avoid. Hence the revert in the
same branch
[ Background - the deprecation warning discussion resulted in people
stepping up, and so hfs{plus} will have a maintainer taking care of
it after all.. - Linus ]
- Switch CONFIG_SYSFS_SYCALL default to n and decouple from
CONFIG_EXPERT
- Fix an audit bug caused by changes to our kernel path lookup helpers
this cycle. Audit needs the parent path even if the dentry it tried
to look up is negative
- Ensure that the kernel path lookup helpers leave the passed in path
argument clean when they return an error. This is consistent with all
our other helpers
- Ensure that vfs_getattr_nosec() calls bdev_statx() so the relevant
information is available to kernel consumers as well
- Don't set a timer and call schedule() if the timer will expire
immediately in epoll
- Make netfs lookup tables with __nonstring
* tag 'vfs-6.15-rc3.fixes.2' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
Revert "hfs{plus}: add deprecation warning"
fs: move the bdex_statx call to vfs_getattr_nosec
netfs: Mark __nonstring lookup tables
eventpoll: Set epoll timeout if it's in the future
fs: ensure that *path_locked*() helpers leave passed path pristine
fs: add kern_path_locked_negative()
hfs{plus}: add deprecation warning
Kconfig: switch CONFIG_SYSFS_SYCALL default to n
This reverts commit ddee68c499.
There's ongoing discussion about better maintenance of at least hfsplus.
Rever the deprecation warning for now.
Signed-off-by: Christian Brauner <brauner@kernel.org>
- Initialize hash variables in ftrace subops logic
The fix that simplified the ftrace subops logic opened a path where some
variables could be used without being initialized, and done subtly where
the compiler did not catch it. Initialize those variables to the
EMPTY_HASH, which is the default hash.
- Reinitialize the hash pointers after they are freed
Some of the hash pointers in the subop logic were freed but may still be
referenced later. To prevent use-after-free bugs, initialize them back to
the EMPTY_HASH.
- Free the ftrace hashes when they are replaced
The fix that simplified the subops logic updated some hash pointers, but
left the original hash that they were pointing to where they are no longer
used. This caused a memory leak. Free the hashes that are pointed to by
the pointers when they are replaced.
- Fix size initialization of ftrace direct function hash
The ftrace direct function hash used by BPF initialized the hash size
incorrectly. It checked the size of items to a hard coded 32, which made
the hash bit size of 5. The hash size is supposed to be limited by the bit
size of the hash, as the bitmask is allowed to be greater than 5. Rework
the size check to first pass the number of elements to fls() and then
compare that to FTRACE_HASH_MAX_BITS before allocating the hash.
- Fix format output of ftrace_graph_ent_entry event
The field depth of the ftrace_graph_ent_entry event is of size 4 but the
output showed it as unsigned long and use "%lu". Change it to unsigned int
and use "%u" in the print format that is displayed to user space.
- Fix the trace event filter on strings
Events can be filtered on numbers or string values. The return value
checked from strncpy_from_kernel_nofault() and strncpy_from_user_nofault()
was used to determine if reading the strings would fault or not. It would
return fault if the value was non zero, which is basically meant that it
was always considering the read as a fault.
- Add selftest to test trace event string filtering
In order to catch the breakage of the string filtering, add a self test to
make sure that it continues to work.
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Merge tag 'trace-v6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace
Pull tracing fixes from Steven Rostedt:
- Initialize hash variables in ftrace subops logic
The fix that simplified the ftrace subops logic opened a path where
some variables could be used without being initialized, and done
subtly where the compiler did not catch it. Initialize those
variables to the EMPTY_HASH, which is the default hash.
- Reinitialize the hash pointers after they are freed
Some of the hash pointers in the subop logic were freed but may still
be referenced later. To prevent use-after-free bugs, initialize them
back to the EMPTY_HASH.
- Free the ftrace hashes when they are replaced
The fix that simplified the subops logic updated some hash pointers,
but left the original hash that they were pointing to where they are
no longer used. This caused a memory leak. Free the hashes that are
pointed to by the pointers when they are replaced.
- Fix size initialization of ftrace direct function hash
The ftrace direct function hash used by BPF initialized the hash size
incorrectly. It checked the size of items to a hard coded 32, which
made the hash bit size of 5. The hash size is supposed to be limited
by the bit size of the hash, as the bitmask is allowed to be greater
than 5. Rework the size check to first pass the number of elements to
fls() and then compare that to FTRACE_HASH_MAX_BITS before allocating
the hash.
- Fix format output of ftrace_graph_ent_entry event
The field depth of the ftrace_graph_ent_entry event is of size 4 but
the output showed it as unsigned long and use "%lu". Change it to
unsigned int and use "%u" in the print format that is displayed to
user space.
- Fix the trace event filter on strings
Events can be filtered on numbers or string values. The return value
checked from strncpy_from_kernel_nofault() and
strncpy_from_user_nofault() was used to determine if reading the
strings would fault or not. It would return fault if the value was
non zero, which is basically meant that it was always considering the
read as a fault.
- Add selftest to test trace event string filtering
In order to catch the breakage of the string filtering, add a self
test to make sure that it continues to work.
* tag 'trace-v6.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
tracing: selftests: Add testing a user string to filters
tracing: Fix filter string testing
ftrace: Fix type of ftrace_graph_ent_entry.depth
ftrace: fix incorrect hash size in register_ftrace_direct()
ftrace: Free ftrace hashes after they are replaced in the subops code
ftrace: Reinitialize hash to EMPTY_HASH after freeing
ftrace: Initialize variables for ftrace_startup/shutdown_subops()
- v6.15 libcrc clean-up makes invalid configurations possible
- Fix a potential deadlock introduced during the v6.15 merge window
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Merge tag 'nfsd-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux
Pull nfsd fixes from Chuck Lever:
- v6.15 libcrc clean-up makes invalid configurations possible
- Fix a potential deadlock introduced during the v6.15 merge window
* tag 'nfsd-6.15-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
nfsd: decrease sc_count directly if fail to queue dl_recall
nfs: add missing selections of CONFIG_CRC32
Toolchain and infrastructure:
- Fix missing KASAN LLVM flags on first build (and fix spurious
rebuilds) by skipping '--target'.
- Fix Make < 4.3 build error by using '$(pound)'.
- Fix UML build error by removing 'volatile' qualifier from io helpers.
- Fix UML build error by adding 'dma_{alloc,free}_attrs()' helpers.
- Clean gendwarfksyms warnings by avoiding to export '__pfx' symbols.
- Clean objtool warning by adding a new 'noreturn' function for 1.86.0.
- Disable 'needless_continue' Clippy lint due to new 1.86.0 warnings.
- Add missing 'ffi' crate to 'generate_rust_analyzer.py'.
'pin-init' crate:
- Import a couple fixes from upstream.
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Merge tag 'rust-fixes-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux
Pull rust fixes from Miguel Ojeda:
"Toolchain and infrastructure:
- Fix missing KASAN LLVM flags on first build (and fix spurious
rebuilds) by skipping '--target'
- Fix Make < 4.3 build error by using '$(pound)'
- Fix UML build error by removing 'volatile' qualifier from io
helpers
- Fix UML build error by adding 'dma_{alloc,free}_attrs()' helpers
- Clean gendwarfksyms warnings by avoiding to export '__pfx' symbols
- Clean objtool warning by adding a new 'noreturn' function for
1.86.0
- Disable 'needless_continue' Clippy lint due to new 1.86.0 warnings
- Add missing 'ffi' crate to 'generate_rust_analyzer.py'
'pin-init' crate:
- Import a couple fixes from upstream"
* tag 'rust-fixes-6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/ojeda/linux:
rust: helpers: Add dma_alloc_attrs() and dma_free_attrs()
rust: helpers: Remove volatile qualifier from io helpers
rust: kbuild: use `pound` to support GNU Make < 4.3
objtool/rust: add one more `noreturn` Rust function for Rust 1.86.0
rust: kasan/kbuild: fix missing flags on first build
rust: disable `clippy::needless_continue`
rust: kbuild: Don't export __pfx symbols
rust: pin-init: use Markdown autolinks in Rust comments
rust: pin-init: alloc: restrict `impl ZeroableOption` for `Box` to `T: Sized`
scripts: generate_rust_analyzer: Add ffi crate
dma-buf:
- Correctly decrement refcounter on errors
gem:
- Fix test for imported buffers
amdgpu:
- Cleaner shader sysfs fix
- Suspend fix
- Fix doorbell free ordering
- Video caps fix
- DML2 memory allocation optimization
- HDP fix
i915:
- Fix DP DSC configurations that require 3 DSC engines per pipe
xe:
- Fix LRC address being written too late for GuC
- Fix notifier vs folio deadlock
- Fix race betwen dma_buf unmap and vram eviction
- Fix debugfs handling PXP terminations unconditionally
msm:
- Display:
- Fix to call dpu_plane_atomic_check_pipe() for both SSPPs in
case of multi-rect
- Fix to validate plane_state pointer before using it in
dpu_plane_virtual_atomic_check()
- Fix to make sure dereferencing dpu_encoder_phys happens after
making sure it is valid in _dpu_encoder_trigger_start()
- Remove the remaining intr_tear_rd_ptr which we initialized
to -1 because NO_IRQ indices start from 0 now
- GPU:
- Fix IB_SIZE overflow
ivpu:
- Fix debugging
- Fixes to frequency
- Support firmware API 3.28.3
- Flush jobs upon reset
mgag200:
- Set vblank start to correct values
v3d:
- Fix Indirect Dispatch
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Merge tag 'drm-fixes-2025-04-19' of https://gitlab.freedesktop.org/drm/kernel
Pull drm fixes from Dave Airlie:
"Easter rc3 pull request, fixes in all the usuals, amdgpu, xe, msm,
with some i915/ivpu/mgag200/v3d fixes, then a couple of bits in
dma-buf/gem.
Hopefully has no easter eggs in it.
dma-buf:
- Correctly decrement refcounter on errors
gem:
- Fix test for imported buffers
amdgpu:
- Cleaner shader sysfs fix
- Suspend fix
- Fix doorbell free ordering
- Video caps fix
- DML2 memory allocation optimization
- HDP fix
i915:
- Fix DP DSC configurations that require 3 DSC engines per pipe
xe:
- Fix LRC address being written too late for GuC
- Fix notifier vs folio deadlock
- Fix race betwen dma_buf unmap and vram eviction
- Fix debugfs handling PXP terminations unconditionally
msm:
- Display:
- Fix to call dpu_plane_atomic_check_pipe() for both SSPPs in
case of multi-rect
- Fix to validate plane_state pointer before using it in
dpu_plane_virtual_atomic_check()
- Fix to make sure dereferencing dpu_encoder_phys happens after
making sure it is valid in _dpu_encoder_trigger_start()
- Remove the remaining intr_tear_rd_ptr which we initialized to
-1 because NO_IRQ indices start from 0 now
- GPU:
- Fix IB_SIZE overflow
ivpu:
- Fix debugging
- Fixes to frequency
- Support firmware API 3.28.3
- Flush jobs upon reset
mgag200:
- Set vblank start to correct values
v3d:
- Fix Indirect Dispatch"
* tag 'drm-fixes-2025-04-19' of https://gitlab.freedesktop.org/drm/kernel: (26 commits)
drm/msm/a6xx+: Don't let IB_SIZE overflow
drm/xe/pxp: do not queue unneeded terminations from debugfs
drm/xe/dma_buf: stop relying on placement in unmap
drm/xe/userptr: fix notifier vs folio deadlock
drm/xe: Set LRC addresses before guc load
drm/mgag200: Fix value in <VBLKSTR> register
drm/gem: Internally test import_attach for imported objects
drm/amdgpu: Use the right function for hdp flush
drm/amd/display/dml2: use vzalloc rather than kzalloc
drm/amdgpu: Add back JPEG to video caps for carrizo and newer
drm/amdgpu: fix warning of drm_mm_clean
drm/amd: Forbid suspending into non-default suspend states
drm/amdgpu: use a dummy owner for sysfs triggered cleaner shaders v4
drm/i915/dp: Check for HAS_DSC_3ENGINES while configuring DSC slices
drm/i915/display: Add macro for checking 3 DSC engines
dma-buf/sw_sync: Decrement refcount on error in sw_sync_ioctl_get_deadline()
accel/ivpu: Add cmdq_id to job related logs
accel/ivpu: Show NPU frequency in sysfs
accel/ivpu: Fix the NPU's DPU frequency calculation
accel/ivpu: Update FW Boot API to version 3.28.3
...
Dave Hansen reports the following crash on a 32-bit system with
CONFIG_HIGHMEM=y and CONFIG_X86_PAE=y:
> 0xf75fe000 is the mem_map[] entry for the first page >4GB. It
> obviously wasn't allocated, thus the oops.
BUG: unable to handle page fault for address: f75fe000
#PF: supervisor write access in kernel mode
#PF: error_code(0x0002) - not-present page
*pdpt = 0000000002da2001 *pde = 000000000300c067 *pte = 0000000000000000
Oops: Oops: 0002 [#1] SMP NOPTI
CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted 6.15.0-rc1-00288-ge618ee89561b-dirty #311 PREEMPT(undef)
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.15.0-1 04/01/2014
EIP: __free_pages_core+0x3c/0x74
...
Call Trace:
memblock_free_pages+0x11/0x2c
memblock_free_all+0x2ce/0x3a0
mm_core_init+0xf5/0x320
start_kernel+0x296/0x79c
i386_start_kernel+0xad/0xb0
startup_32_smp+0x151/0x154
The mem_map[] is allocated up to the end of ZONE_HIGHMEM which is defined
by max_pfn.
The bug was introduced by this recent commit:
6faea3422e ("arch, mm: streamline HIGHMEM freeing")
Previously, freeing of high memory was also clamped to the end of
ZONE_HIGHMEM but after this change, memblock_free_all() tries to
free memory above the of ZONE_HIGHMEM as well and that causes
access to mem_map[] entries beyond the end of the memory map.
To fix this, discard the memory after max_pfn from memblock on
32-bit systems so that core MM would be aware only of actually
usable memory.
Fixes: 6faea3422e ("arch, mm: streamline HIGHMEM freeing")
Reported-by: Dave Hansen <dave.hansen@intel.com>
Tested-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Andy Shevchenko <andy@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Davide Ciminaghi <ciminaghi@gnudd.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/20250413080858.743221-1-rppt@kernel.org # discussion and submission
Add a sample Rust auxiliary driver based on a PCI driver for QEMU's
"pci-testdev" device.
The PCI driver only registers an auxiliary device, in order to make the
corresponding auxiliary driver probe.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20250414131934.28418-6-dakr@kernel.org
[ Use `ok_or()` when accessing auxiliary::Device::parent(). - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Implement the `auxiliary::Registration` type, which provides an API to
create and register new auxiliary devices in the system.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20250414131934.28418-5-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Implement the basic auxiliary abstractions required to implement a
driver matching an auxiliary device.
The design and implementation is analogous to PCI and platform and is
based on the generic device / driver abstractions.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Link: https://lore.kernel.org/r/20250414131934.28418-4-dakr@kernel.org
[ Fix typos, `let _ =` => `drop()`, use `kernel::ffi`. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Analogous to `Opaque::uninit` add `Opaque::zeroed`, which sets the
corresponding memory to zero. In contrast to `Opaque::uninit`, the
corresponding value, depending on its type, may be initialized.
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://lore.kernel.org/r/20250414131934.28418-2-dakr@kernel.org
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Implement TryFrom<&device::Device> for &Device.
This allows us to get a &platform::Device from a generic &Device in a safe
way; the conversion fails if the device' bus type does not match with
the platform bus type.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Link: https://lore.kernel.org/r/20250321214826.140946-4-dakr@kernel.org
[ Support device context types, use dev_is_platform() helper. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Implement TryFrom<&device::Device> for &Device.
This allows us to get a &pci::Device from a generic &Device in a safe
way; the conversion fails if the device' bus type does not match with
the PCI bus type.
Reviewed-by: Alice Ryhl <aliceryhl@google.com>
Reviewed-by: Benno Lossin <benno.lossin@proton.me>
Link: https://lore.kernel.org/r/20250321214826.140946-3-dakr@kernel.org
[ Support device context types, use dev_is_pci() helper. - Danilo ]
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Introduce the "Bound" device context, such that it can be ensured to only
ever pass a bound device to APIs that require this precondition. [1]
This tag exists to share the patches from [1] between multiple trees.
[1] https://lore.kernel.org/lkml/20250413173758.12068-1-dakr@kernel.org/
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Merge tag 'topic/device-context-2025-04-17' into nova-next
Introduce "Bound" device context
Introduce the "Bound" device context, such that it can be ensured to only
ever pass a bound device to APIs that require this precondition. [1]
This tag exists to share the patches from [1] between multiple trees.
[1] https://lore.kernel.org/lkml/20250413173758.12068-1-dakr@kernel.org/
Fixes for v6.15-rc3
Display:
- Fix to call dpu_plane_atomic_check_pipe() for both SSPPs in
case of multi-rect
- Fix to validate plane_state pointer before using it in
dpu_plane_virtual_atomic_check()
- Fix to make sure dereferencing dpu_encoder_phys happens after
making sure it is valid in _dpu_encoder_trigger_start()
- Remove the remaining intr_tear_rd_ptr which we initialized
to -1 because NO_IRQ indices start from 0 now
GPU:
- Fix IB_SIZE overflow
Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Rob Clark <robdclark@gmail.com>
Link: https://lore.kernel.org/r/CAF6AEGtVKXEVdzUzFWmQE8JmK3nx_hp+ynOd-5j3vnfcU-sgOA@mail.gmail.com
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Merge tag '6.15-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6
Pull smb client fixes from Steve French:
- Fix hard link lease key problem when close is deferred
- Revert the socket lockdep/refcount workarounds done in cifs.ko now
that it is fixed at the socket layer
* tag '6.15-rc2-smb3-client-fixes' of git://git.samba.org/sfrench/cifs-2.6:
Revert "smb: client: fix TCP timers deadlock after rmmod"
Revert "smb: client: Fix netns refcount imbalance causing leaks and use-after-free"
smb3 client: fix open hardlink on deferred close file error
This reverts commit 99585c2192.
Remove the acomp multibuffer tests as they are buggy.
Reported-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
