linux-2.6-microblaze.git
10 months agoMerge drm/drm-next into drm-misc-next
Thomas Zimmermann [Mon, 24 Jul 2023 13:44:47 +0000 (15:44 +0200)]
Merge drm/drm-next into drm-misc-next

Backmerging to get v6.5-rc2.

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
10 months agodrm/managed: Clean up GFP_ flag usage in drmm_kmalloc()
Dan Carpenter [Fri, 21 Jul 2023 14:57:49 +0000 (17:57 +0300)]
drm/managed: Clean up GFP_ flag usage in drmm_kmalloc()

This code is not using the correct gfp flags which were passed in.
However, this does not affect runtime because kstrdup_const() is a
no-op in this context.  (It just returns the "kmalloc" string literal
without doing an allocation.)

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Signed-off-by: Maxime Ripard <mripard@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/ddf86b59-696a-45f0-96dd-b87aa7b9ab2e@moroto.mountain
10 months agodrm/bridge: Remove redundant i2c_client in anx7625/it6505
Pin-yen Lin [Tue, 18 Jul 2023 11:04:05 +0000 (19:04 +0800)]
drm/bridge: Remove redundant i2c_client in anx7625/it6505

These two drivers embed a i2c_client in their private driver data, but
only strict device is actually needed. Replace the i2c_client reference
with a struct device one.

Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230718110407.1005200-1-wenst@chromium.org
10 months agodrm/bridge: it6505: Fix Kconfig indentation
Pin-yen Lin [Wed, 12 Jul 2023 06:50:53 +0000 (14:50 +0800)]
drm/bridge: it6505: Fix Kconfig indentation

Replace the spaces with tab characters in the Kconfig file.

Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230712065054.2377278-1-wenst@chromium.org
10 months agodrm/bridge: anx7625: Drop device lock before drm_helper_hpd_irq_event()
Chen-Yu Tsai [Mon, 10 Jul 2023 08:59:21 +0000 (16:59 +0800)]
drm/bridge: anx7625: Drop device lock before drm_helper_hpd_irq_event()

The device lock is used to serialize the low level power sequencing
operations. Since drm_helper_hpd_irq_event() could end up calling
.atomic_enable, which also calls power sequencing functions through
runtime PM, this results in a real deadlock. This was observed on an
MT8192-based Chromebook's external display (with appropriate patches [1]
and DT changes applied).

Move the drm_helper_hpd_irq_event() call outside of the lock range. The
lock only needs to be held so that the device status can be read back.
This is the bare minimum change to avoid the deadlock. The lock could
be dropped completely and have pm_runtime_get_if_in_use() increase the
reference count, but this is not the same as pm_runtime_suspended().

Dropping the lock completely also causes the internal display of the
same device to not function correctly if the internal bridge's
interrupt line is added in the device tree. Both the internal and
external display of said device each use one anx7625 bridge.

[1] https://lore.kernel.org/dri-devel/20230112042104.4107253-1-treapking@chromium.org/

Fixes: 60487584a79a ("drm/bridge: anx7625: refactor power control to use runtime PM framework")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230710085922.1871465-1-wenst@chromium.org
10 months agodrm: Make FB_CORE to be selected if DRM fbdev emulation is enabled
Javier Martinez Canillas [Wed, 19 Jul 2023 08:15:38 +0000 (10:15 +0200)]
drm: Make FB_CORE to be selected if DRM fbdev emulation is enabled

Now that fbdev core has been split in FB_CORE and FB, make the DRM symbol
to select the FB_CORE option if the DRM fbdev emulation layer is enabled.

This allows to disable the CONFIG_FB option if is not needed, which will
avoid the need to explicitly disable each of the legacy fbdev drivers.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230719081544.741051-5-javierm@redhat.com
10 months agofbdev: Split frame buffer support in FB and FB_CORE symbols
Javier Martinez Canillas [Wed, 19 Jul 2023 08:15:37 +0000 (10:15 +0200)]
fbdev: Split frame buffer support in FB and FB_CORE symbols

Currently the CONFIG_FB option has to be enabled even if no legacy fbdev
drivers are needed (e.g: only to have support for framebuffer consoles).

The DRM subsystem has a fbdev emulation layer, but depends on CONFIG_FB
and so it can only be enabled if that dependency is enabled as well.

That means fbdev drivers have to be explicitly disabled if users want to
enable CONFIG_FB, only to use fbcon and/or the DRM fbdev emulation layer.

This patch introduces a non-visible CONFIG_FB_CORE symbol that could be
enabled just to have core support needed for CONFIG_DRM_FBDEV_EMULATION,
allowing CONFIG_FB to be disabled (and automatically disabling all the
fbdev drivers).

Nothing from fb_backlight.o and fbmon.o is used by the DRM fbdev emulation
layer so these two objects can be compiled out when CONFIG_FB is disabled.

Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230719081544.741051-4-javierm@redhat.com
10 months agofbdev: Move core fbdev symbols to a separate Kconfig file
Javier Martinez Canillas [Wed, 19 Jul 2023 08:15:36 +0000 (10:15 +0200)]
fbdev: Move core fbdev symbols to a separate Kconfig file

The drivers/video/fbdev/Kconfig defines both symbols for fbdev drivers and
core fbdev symbols, that can be enabled independently of the fbdev drivers.

Split the Kconfig in two, one that only has the symbols for fbdev drivers
and another one that contains the fbdev core symbols.

Suggested-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230719081544.741051-3-javierm@redhat.com
10 months agovideo: Add auxiliary display drivers to Graphics support menu
Javier Martinez Canillas [Wed, 19 Jul 2023 08:15:35 +0000 (10:15 +0200)]
video: Add auxiliary display drivers to Graphics support menu

The drivers in this subsystem are for either character-based or monochrome
LCD controllers. Which can fall into the same category of the DRM/KMS and
fbdev drivers, that are located under the "Graphics support" menu.

Add the auxdisplay drivers there as well to have all display drivers under
the same menu.

Suggested-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Helge Deller <deller@gmx.de>
Acked-by: Miguel Ojeda <ojeda@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230719081544.741051-2-javierm@redhat.com
10 months agodrm/ssd130x: Fix pitch calculation in ssd130x_fb_blit_rect()
Geert Uytterhoeven [Thu, 13 Jul 2023 13:17:09 +0000 (15:17 +0200)]
drm/ssd130x: Fix pitch calculation in ssd130x_fb_blit_rect()

The page height must be taken into account only for vertical coordinates
and heights, not for horizontal coordinates and widths.

Fixes: 179a790aaf2a ("drm/ssd130x: Set the page height value in the device info data")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/54deec2ec533e90544faa8c60a0c2518c58f3e9c.1689252746.git.geert@linux-m68k.org
10 months agodrm/bridge: tc358767: give VSDELAY some positive value
David Jander [Fri, 21 Jul 2023 16:53:28 +0000 (18:53 +0200)]
drm/bridge: tc358767: give VSDELAY some positive value

The documentation is not clear about how this delay works.
Empirical tests have shown that with a VSDELAY of 0, the first
scanline is not properly formatted in the output stream when
DSI->DP mode is used. The calculation spreadsheets from Toshiba
seem to always make this value equal to the HFP + 10 for DSI->DP
use-case. For DSI->DPI this value should be > 2 and for DPI->DP
it seems to always be 0x64.

Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Tested-by: Marek Vasut <marex@denx.de> # TC9595
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230721165328.3968759-2-l.stach@pengutronix.de
10 months agodrm/bridge: tc358767: increase PLL lock time delay
David Jander [Fri, 21 Jul 2023 16:53:27 +0000 (18:53 +0200)]
drm/bridge: tc358767: increase PLL lock time delay

The PLL often fails to lock with this delay. The new value was
determined by trial and error increasing the delay bit by bit
until the error did not occurr anymore even after several tries.
Then double that value was taken as the minimum delay to be safe.

Signed-off-by: David Jander <david@protonic.nl>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Marek Vasut <marex@denx.de>
Tested-by: Marek Vasut <marex@denx.de> # TC9595
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Marek Vasut <marex@denx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230721165328.3968759-1-l.stach@pengutronix.de
10 months agodrm/arm/komeda: Remove component framework and add a simple encoder
Faiz Abbas [Wed, 12 Jul 2023 06:49:37 +0000 (12:19 +0530)]
drm/arm/komeda: Remove component framework and add a simple encoder

The Komeda driver always expects the remote connector node to initialize
an encoder. It uses the component aggregator framework which consists
of component->bind() calls used to initialize the remote encoder and attach
it to the crtc. This makes it incompatible with connector drivers which
implement drm_bridge APIs.

Remove all component framework calls from the komeda driver and declare and
attach an encoder inside komeda_crtc_add().

The remote connector driver has to implement the DRM bridge APIs which
can be used to glue the encoder to the remote connector. Since we
usually pair this with a component encoder that also implements a
drm_bridge, dropping support is not expected to affect users of this
driver.

Signed-off-by: Faiz Abbas <faiz.abbas@arm.com>
Message-ID: <20230712064937.25192-1-faiz.abbas@arm.com>
[small white space fixes flagged by checkpatch.pl]
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230712064937.25192-1-faiz.abbas@arm.com
10 months agodrm: adv7511: Fix low refresh rate register for ADV7533/5
Bogdan Togorean [Wed, 19 Jul 2023 06:01:43 +0000 (09:01 +0300)]
drm: adv7511: Fix low refresh rate register for ADV7533/5

For ADV7533 and ADV7535 low refresh rate is selected using
bits [3:2] of 0x4a main register.
So depending on ADV model write 0xfb or 0x4a register.

Fixes: 2437e7cd88e8 ("drm/bridge: adv7533: Initial support for ADV7533")
Reviewed-by: Robert Foss <rfoss@kernel.org>
Reviewed-by: Nuno Sa <nuno.sa@analog.com>
Signed-off-by: Bogdan Togorean <bogdan.togorean@analog.com>
Signed-off-by: Alexandru Ardelean <alex@shruggie.ro>
Reviewed-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230719060143.63649-1-alex@shruggie.ro
10 months agodrm: Explicitly include correct DT includes
Rob Herring [Fri, 14 Jul 2023 17:45:34 +0000 (11:45 -0600)]
drm: Explicitly include correct DT includes

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring <robh@kernel.org>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Reviewed-by: Steven Price <steven.price@arm.com>
Acked-by: Liviu Dudau <liviu.dudau@arm.com>
Reviewed-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Acked-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714174545.4056287-1-robh@kernel.org
10 months agogpu/host1x: Explicitly include correct DT includes
Rob Herring [Fri, 14 Jul 2023 17:45:49 +0000 (11:45 -0600)]
gpu/host1x: Explicitly include correct DT includes

The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714174549.4056675-1-robh@kernel.org
10 months agogpu: host1x: Stop open-coding of_device_uevent()
Miquel Raynal [Thu, 22 Jun 2023 21:32:14 +0000 (23:32 +0200)]
gpu: host1x: Stop open-coding of_device_uevent()

There is apparently no reasons to open-code of_device_uevent() besides:
- The helper receives a struct device while we want to use the of_node
  member of the struct device *parent*.
- of_device_uevent() could not be called by modules because of a missing
  EXPORT_SYMBOL*().

In practice, the former point is not very constraining, just calling
of_device_uevent(dev->parent, ...) would have made the trick.

The latter point is more an observation rather than a real blocking
point because nothing prevented of_uevent() (called by the inline
function of_device_uevent()) to be exported to modules. In practice,
this helper is now exported, so nothing prevent us from using
of_device_uevent() anymore.

Let's use the core helper directly instead of open-coding it.

Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: David Airlie <airlied@gmail.com>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Mikko Perttunen <mperttunen@nvidia.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230622213214.3586530-3-miquel.raynal@bootlin.com
10 months agoof: module: Export of_device_uevent()
Miquel Raynal [Thu, 22 Jun 2023 21:32:13 +0000 (23:32 +0200)]
of: module: Export of_device_uevent()

The content of of_device_uevent() is currently hardcoded in a driver
that can be compiled as a module. Nothing prevents of_device_uevent() to
be exported to modules, most of the other helpers in of/device.c
actually are. The reason why this helper was not exported is because it
has been so far only useful in drivers/base, which is built-in anyway.

With the idea of getting rid of the hardcoded implementation of
of_device_uevent() in other places in the kernel, let's export it to GPL
modules (very much like its cousins in the same file).

Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230622213214.3586530-2-miquel.raynal@bootlin.com
10 months agodrm: debugfs: Silence warning from cast
Steven Price [Thu, 20 Jul 2023 10:51:27 +0000 (11:51 +0100)]
drm: debugfs: Silence warning from cast

Casting a pointer to an integer of a different size generates a warning
from the compiler. First cast the pointer to a pointer-sized type to
keep the compiler happy.

Fixes: 4f66feeab173 ("drm: debugfs: provide infrastructure to dump a DRM GPU VA space")
Reviewed-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/010b58cd-1225-02f7-33f0-c678e5cd349d@arm.com
10 months agodrm: manager: Fix printk format for size_t
Steven Price [Thu, 20 Jul 2023 10:44:02 +0000 (11:44 +0100)]
drm: manager: Fix printk format for size_t

sizeof() returns a size_t which may be different to an unsigned long.
Use the correct format specifier of '%zu' to prevent compiler warnings.

Fixes: e6303f323b1a ("drm: manager to keep track of GPUs VA mappings")
Reviewed-by: Danilo Krummrich <dakr@redhat.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/2bf64010-c40a-8b84-144c-5387412b579e@arm.com
10 months agodrm/panel: simple: Drop prepared_time
Marek Vasut [Sun, 9 Jul 2023 16:22:53 +0000 (18:22 +0200)]
drm/panel: simple: Drop prepared_time

This has been superseded by RPM in commit
3235b0f20a0a ("drm/panel: panel-simple: Use runtime pm to avoid excessive unprepare / prepare")
and the last user of the non-RPM case has been dropped in commit
b6d5ffce11dd ("drm/panel-simple: Non-eDP panels don't need "HPD" handling")
whatever is left in this driver is just assigned and never used.
Drop the remaining parts.

Signed-off-by: Marek Vasut <marex@denx.de>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230709162253.464299-1-marex@denx.de
10 months agodrm/syncobj: add IOCTL to register an eventfd
Simon Ser [Fri, 14 Jul 2023 11:13:03 +0000 (11:13 +0000)]
drm/syncobj: add IOCTL to register an eventfd

Introduce a new DRM_IOCTL_SYNCOBJ_EVENTFD IOCTL which signals an
eventfd from a syncobj.

This is useful for Wayland compositors to handle wait-before-submit.
Wayland clients can send a timeline point to the compositor
before the point has materialized yet, then compositors can wait
for the point to materialize via this new IOCTL.

The existing DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT IOCTL is not suitable
because it blocks. Compositors want to integrate the wait with
their poll(2)-based event loop.

Requirements for new uAPI:

- User-space patch: https://gitlab.freedesktop.org/wlroots/wlroots/-/merge_requests/4262
- IGT: https://lists.freedesktop.org/archives/igt-dev/2023-July/057893.html

v2:
- Wait for fence when flags is zero
- Improve documentation (Pekka)
- Rename IOCTL (Christian)
- Fix typo in drm_syncobj_add_eventfd() (Christian)

v3:
- Link user-space + IGT patches
- Add reference from overview docs

v4: fix IOCTL number conflict with GETFB2 (Nicholas Choi, Vitaly Prosyak)

Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by: Christian König <christian.koenig@amd.com>
Acked-by: Pekka Paalanen <pekka.paalanen@collabora.com>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Cc: Daniel Stone <daniel@fooishbar.org>
Cc: James Jones <jajones@nvidia.com>
Cc: Austin Shafer <ashafer@nvidia.com>
Cc: Vitaly Prosyak <vprosyak@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714111257.11940-1-contact@emersion.fr
10 months agodrm: debugfs: provide infrastructure to dump a DRM GPU VA space
Danilo Krummrich [Thu, 20 Jul 2023 00:14:23 +0000 (02:14 +0200)]
drm: debugfs: provide infrastructure to dump a DRM GPU VA space

This commit adds a function to dump a DRM GPU VA space and a macro for
drivers to register the struct drm_info_list 'gpuvas' entry.

Most likely, most drivers might maintain one DRM GPU VA space per struct
drm_file, but there might also be drivers not having a fixed relation
between DRM GPU VA spaces and a DRM core infrastructure, hence we need the
indirection via the driver iterating it's maintained DRM GPU VA spaces.

Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230720001443.2380-3-dakr@redhat.com
10 months agodrm: manager to keep track of GPUs VA mappings
Danilo Krummrich [Thu, 20 Jul 2023 00:14:22 +0000 (02:14 +0200)]
drm: manager to keep track of GPUs VA mappings

Add infrastructure to keep track of GPU virtual address (VA) mappings
with a decicated VA space manager implementation.

New UAPIs, motivated by Vulkan sparse memory bindings graphics drivers
start implementing, allow userspace applications to request multiple and
arbitrary GPU VA mappings of buffer objects. The DRM GPU VA manager is
intended to serve the following purposes in this context.

1) Provide infrastructure to track GPU VA allocations and mappings,
   using an interval tree (RB-tree).

2) Generically connect GPU VA mappings to their backing buffers, in
   particular DRM GEM objects.

3) Provide a common implementation to perform more complex mapping
   operations on the GPU VA space. In particular splitting and merging
   of GPU VA mappings, e.g. for intersecting mapping requests or partial
   unmap requests.

Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Acked-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Tested-by: Matthew Brost <matthew.brost@intel.com>
Tested-by: Donald Robson <donald.robson@imgtec.com>
Suggested-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Danilo Krummrich <dakr@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230720001443.2380-2-dakr@redhat.com
10 months agodrm/bridge: anx7625: Use common macros for HDCP capabilities
Chen-Yu Tsai [Mon, 10 Jul 2023 09:12:01 +0000 (17:12 +0800)]
drm/bridge: anx7625: Use common macros for HDCP capabilities

The DRM DP code has macros for the DP HDCP capabilities. Use them in the
anx7625 driver instead of raw numbers.

Fixes: cd1637c7e480 ("drm/bridge: anx7625: add HDCP support")
Suggested-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Robert Foss <rfoss@kernel.org>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230710091203.1874317-1-wenst@chromium.org
10 months agodrm/bridge: anx7625: Use common macros for DP power sequencing commands
Chen-Yu Tsai [Mon, 10 Jul 2023 09:09:27 +0000 (17:09 +0800)]
drm/bridge: anx7625: Use common macros for DP power sequencing commands

The DRM DP code has macros for the DP power sequencing commands. Use
them in the anx7625 driver instead of raw numbers.

Fixes: 548b512e144f ("drm/bridge: anx7625: send DPCD command to downstream")
Fixes: 27f26359de9b ("drm/bridge: anx7625: Set downstream sink into normal status")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Reviewed-by: Nícolas F. R. A. Prado <nfraprado@collabora.com>
Signed-off-by: Robert Foss <rfoss@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230710090929.1873646-1-wenst@chromium.org
10 months agoMerge tag 'drm-misc-next-2023-07-13' of git://anongit.freedesktop.org/drm/drm-misc...
Daniel Vetter [Mon, 17 Jul 2023 13:37:56 +0000 (15:37 +0200)]
Merge tag 'drm-misc-next-2023-07-13' of git://anongit.freedesktop.org/drm/drm-misc into drm-next

drm-misc-next for v6.6:

UAPI Changes:

 * fbdev:
   * Make fbdev userspace interfaces optional; only leaves the
     framebuffer console active

 * prime:
   * Support dma-buf self-import for all drivers automatically: improves
     support for many userspace compositors

Cross-subsystem Changes:

 * backlight:
   * Fix interaction with fbdev in several drivers

 * base: Convert struct platform.remove to return void; part of a larger,
   tree-wide effort

 * dma-buf: Acquire reservation lock for mmap() in exporters; part
   of an on-going effort to simplify locking around dma-bufs

 * fbdev:
   * Use Linux device instead of fbdev device in many places
   * Use deferred-I/O helper macros in various drivers

 * i2c: Convert struct i2c from .probe_new to .probe; part of a larger,
   tree-wide effort

 * video:
   * Avoid including <linux/screen_info.h>

Core Changes:

 * atomic:
   * Improve logging

 * prime:
   * Remove struct drm_driver.gem_prime_mmap plus driver updates: all
     drivers now implement this callback with drm_gem_prime_mmap()

 * gem:
   * Support execution contexts: provides locking over multiple GEM
     objects

 * ttm:
   * Support init_on_free
   * Swapout fixes

Driver Changes:

 * accel:
   * ivpu: MMU updates; Support debugfs

 * ast:
   * Improve device-model detection
   * Cleanups

 * bridge:
   * dw-hdmi: Improve support for YUV420 bus format
   * dw-mipi-dsi: Fix enable/disable of DSI controller
   * lt9611uxc: Use MODULE_FIRMWARE()
   * ps8640: Remove broken EDID code
   * samsung-dsim: Fix command transfer
   * tc358764: Handle HS/VS polarity; Use BIT() macro; Various cleanups
   * Cleanups

 * ingenic:
   * Kconfig REGMAP fixes

 * loongson:
   * Support display controller

 * mgag200:
   * Minor fixes

 * mxsfb:
   * Support disabling overlay planes

 * nouveau:
   * Improve VRAM detection
   * Various fixes and cleanups

 * panel:
   * panel-edp: Support AUO B116XAB01.4
   * Support Visionox R66451 plus DT bindings
   * Cleanups

 * ssd130x:
   * Support per-controller default resolution plus DT bindings
   * Reduce memory-allocation overhead
   * Cleanups

 * tidss:
   * Support TI AM625 plus DT bindings
   * Implement new connector model plus driver updates

 * vkms
   * Improve write-back support
   * Documentation fixes

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230713090830.GA23281@linux-uq9g
10 months agodrm/file: use explicit values for enum drm_minor_type
Simon Ser [Fri, 14 Jul 2023 10:46:04 +0000 (10:46 +0000)]
drm/file: use explicit values for enum drm_minor_type

This makes it clearer that the values cannot be changed because
they are ABI.

Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by:James Zhu <James.Zhu@amd.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Christian König <christian.koenig@amd.com>
Cc: Marek Olšák <marek.olsak@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714104557.518457-2-contact@emersion.fr
10 months agodrm/drv: use enum drm_minor_type when appropriate
Simon Ser [Fri, 14 Jul 2023 10:46:02 +0000 (10:46 +0000)]
drm/drv: use enum drm_minor_type when appropriate

This makes it easier to figure out what the "type" variable can be
set to when reading the implementation of these functions.

Signed-off-by: Simon Ser <contact@emersion.fr>
Reviewed-by:James Zhu <James.Zhu@amd.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Christian König <christian.koenig@amd.com>
Cc: Marek Olšák <marek.olsak@amd.com>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20230714104557.518457-1-contact@emersion.fr
10 months agoLinux 6.5-rc2
Linus Torvalds [Sun, 16 Jul 2023 22:10:37 +0000 (15:10 -0700)]
Linux 6.5-rc2

10 months agoMerge tag 'xtensa-20230716' of https://github.com/jcmvbkbc/linux-xtensa
Linus Torvalds [Sun, 16 Jul 2023 21:12:49 +0000 (14:12 -0700)]
Merge tag 'xtensa-20230716' of https://github.com/jcmvbkbc/linux-xtensa

Pull xtensa fixes from Max Filippov:

 - fix interaction between unaligned exception handler and load/store
   exception handler

 - fix parsing ISS network interface specification string

 - add comment about etherdev freeing to ISS network driver

* tag 'xtensa-20230716' of https://github.com/jcmvbkbc/linux-xtensa:
  xtensa: fix unaligned and load/store configuration interaction
  xtensa: ISS: fix call to split_if_spec
  xtensa: ISS: add comment about etherdev freeing

10 months agoMerge tag 'perf_urgent_for_v6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 16 Jul 2023 20:46:08 +0000 (13:46 -0700)]
Merge tag 'perf_urgent_for_v6.5_rc2' of git://git./linux/kernel/git/tip/tip

Pull perf fix from Borislav Petkov:

 - Fix a lockdep warning when the event given is the first one, no event
   group exists yet but the code still goes and iterates over event
   siblings

* tag 'perf_urgent_for_v6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86: Fix lockdep warning in for_each_sibling_event() on SPR

10 months agoMerge tag 'objtool_urgent_for_v6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 16 Jul 2023 20:34:29 +0000 (13:34 -0700)]
Merge tag 'objtool_urgent_for_v6.5_rc2' of git://git./linux/kernel/git/tip/tip

Pull objtool fixes from Borislav Petkov:

 - Mark copy_iovec_from_user() __noclone in order to prevent gcc from
   doing an inter-procedural optimization and confuse objtool

 - Initialize struct elf fully to avoid build failures

* tag 'objtool_urgent_for_v6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  iov_iter: Mark copy_iovec_from_user() noclone
  objtool: initialize all of struct elf

10 months agoMerge tag 'sched_urgent_for_v6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 16 Jul 2023 20:22:08 +0000 (13:22 -0700)]
Merge tag 'sched_urgent_for_v6.5_rc2' of git://git./linux/kernel/git/tip/tip

Pull scheduler fixes from Borislav Petkov:

 - Remove a cgroup from under a polling process properly

 - Fix the idle sibling selection

* tag 'sched_urgent_for_v6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/psi: use kernfs polling functions for PSI trigger polling
  sched/fair: Use recent_used_cpu to test p->cpus_ptr

10 months agoMerge tag 'pinctrl-v6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw...
Linus Torvalds [Sun, 16 Jul 2023 19:55:31 +0000 (12:55 -0700)]
Merge tag 'pinctrl-v6.5-2' of git://git./linux/kernel/git/linusw/linux-pinctrl

Pull pin control fixes from Linus Walleij:
 "I'm mostly on vacation but what would vacation be without a few
  critical fixes so people can use their gaming laptops when hiding away
  from the sun (or rain)?

   - Fix a really annoying interrupt storm in the AMD driver affecting
     Asus TUF gaming notebooks

   - Fix device tree parsing in the Renesas driver"

* tag 'pinctrl-v6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: amd: Unify debounce handling into amd_pinconf_set()
  pinctrl: amd: Drop pull up select configuration
  pinctrl: amd: Use amd_pinconf_set() for all config options
  pinctrl: amd: Only use special debounce behavior for GPIO 0
  pinctrl: renesas: rzg2l: Handle non-unique subnode names
  pinctrl: renesas: rzv2m: Handle non-unique subnode names

10 months agoMerge tag '6.5-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6
Linus Torvalds [Sun, 16 Jul 2023 19:49:05 +0000 (12:49 -0700)]
Merge tag '6.5-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6

Pull smb client fixes from Steve French:

 - Two reconnect fixes: important fix to address inFlight count to leak
   (which can leak credits), and fix for better handling a deleted share

 - DFS fix

 - SMB1 cleanup fix

 - deferred close fix

* tag '6.5-rc1-smb3-fixes' of git://git.samba.org/sfrench/cifs-2.6:
  cifs: fix mid leak during reconnection after timeout threshold
  cifs: is_network_name_deleted should return a bool
  smb: client: fix missed ses refcounting
  smb: client: Fix -Wstringop-overflow issues
  cifs: if deferred close is disabled then close files immediately

10 months agoMerge tag 'powerpc-6.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc...
Linus Torvalds [Sun, 16 Jul 2023 19:28:04 +0000 (12:28 -0700)]
Merge tag 'powerpc-6.5-3' of git://git./linux/kernel/git/powerpc/linux

Pull powerpc fixes from Michael Ellerman:

 - Fix Speculation_Store_Bypass reporting in /proc/self/status on
   Power10

 - Fix HPT with 4K pages since recent changes by implementing pmd_same()

 - Fix 64-bit native_hpte_remove() to be irq-safe

Thanks to Aneesh Kumar K.V, Nageswara R Sastry, and Russell Currey.

* tag 'powerpc-6.5-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
  powerpc/mm/book3s64/hash/4k: Add pmd_same callback for 4K page size
  powerpc/64e: Fix obtool warnings in exceptions-64e.S
  powerpc/security: Fix Speculation_Store_Bypass reporting on Power10
  powerpc/64s: Fix native_hpte_remove() to be irq-safe

10 months agoMerge tag 'hardening-v6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees...
Linus Torvalds [Sun, 16 Jul 2023 19:18:18 +0000 (12:18 -0700)]
Merge tag 'hardening-v6.5-rc2' of git://git./linux/kernel/git/kees/linux

Pull hardening fixes from Kees Cook:

 - Remove LTO-only suffixes from promoted global function symbols
   (Yonghong Song)

 - Remove unused .text..refcount section from vmlinux.lds.h (Petr Pavlu)

 - Add missing __always_inline to sparc __arch_xchg() (Arnd Bergmann)

 - Claim maintainership of string routines

* tag 'hardening-v6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  sparc: mark __arch_xchg() as __always_inline
  MAINTAINERS: Foolishly claim maintainership of string routines
  kallsyms: strip LTO-only suffixes from promoted global functions
  vmlinux.lds.h: Remove a reference to no longer used sections .text..refcount

10 months agoMerge tag 'probes-fixes-v6.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Sun, 16 Jul 2023 19:13:51 +0000 (12:13 -0700)]
Merge tag 'probes-fixes-v6.5-rc1-2' of git://git./linux/kernel/git/trace/linux-trace

Pull probe fixes from Masami Hiramatsu:

 - fprobe: Add a comment why fprobe will be skipped if another kprobe is
   running in fprobe_kprobe_handler().

 - probe-events: Fix some issues related to fetch-arguments:

    - Fix double counting of the string length for user-string and
      symstr. This will require longer buffer in the array case.

    - Fix not to count error code (minus value) for the total used
      length in array argument. This makes the total used length
      shorter.

    - Fix to update dynamic used data size counter only if fetcharg uses
      the dynamic size data. This may mis-count the used dynamic data
      size and corrupt data.

    - Revert "tracing: Add "(fault)" name injection to kernel probes"
      because that did not work correctly with a bug, and we agreed the
      current '(fault)' output (instead of '"(fault)"' like a string)
      explains what happened more clearly.

    - Fix to record 0-length (means fault access) data_loc data in fetch
      function itself, instead of store_trace_args(). If we record an
      array of string, this will fix to save fault access data on each
      entry of the array correctly.

* tag 'probes-fixes-v6.5-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails
  Revert "tracing: Add "(fault)" name injection to kernel probes"
  tracing/probes: Fix to update dynamic data counter if fetcharg uses it
  tracing/probes: Fix not to count error code to total length
  tracing/probes: Fix to avoid double count of the string length on the array
  fprobes: Add a comment why fprobe_kprobe_handler exits if kprobe is running

10 months agoMerge tag 'spi-fix-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Linus Torvalds [Sat, 15 Jul 2023 15:51:02 +0000 (08:51 -0700)]
Merge tag 'spi-fix-v6.5-rc1' of git://git./linux/kernel/git/broonie/spi

Pull spi fixes from Mark Brown:
 "A couple of fairly minor driver specific fixes here, plus a bunch of
  maintainership and admin updates. Nothing too remarkable"

* tag 'spi-fix-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
  mailmap: add entry for Jonas Gorski
  MAINTAINERS: add myself for spi-bcm63xx
  spi: s3c64xx: clear loopback bit after loopback test
  spi: bcm63xx: fix max prepend length
  MAINTAINERS: Add myself as a maintainer for Microchip SPI

10 months agoMerge tag 'regmap-fix-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 15 Jul 2023 15:46:09 +0000 (08:46 -0700)]
Merge tag 'regmap-fix-v6.5-rc1' of git://git./linux/kernel/git/broonie/regmap

Pull regmap fix from Mark Brown:
 "One fix for an out of bounds access in the interupt code here"

* tag 'regmap-fix-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/regmap:
  regmap-irq: Fix out-of-bounds access when allocating config buffers

10 months agoMerge tag 'iommu-fixes-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 15 Jul 2023 15:40:00 +0000 (08:40 -0700)]
Merge tag 'iommu-fixes-v6.5-rc1' of git://git./linux/kernel/git/joro/iommu

Pull iommu fixes from Joerg Roedel:

 - Fix a regression causing a crash on sysfs access of iommu-group
   specific files

 - Fix signedness bug in SVA code

* tag 'iommu-fixes-v6.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
  iommu/sva: Fix signedness bug in iommu_sva_alloc_pasid()
  iommu: Fix crash during syfs iommu_groups/N/type

10 months agoMerge tag 'x86_urgent_for_6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Sat, 15 Jul 2023 03:19:25 +0000 (20:19 -0700)]
Merge tag 'x86_urgent_for_6.5_rc2' of git://git./linux/kernel/git/tip/tip

Pull x86 CFI fixes from Peter Zijlstra:
 "Fix kCFI/FineIBT weaknesses

  The primary bug Alyssa noticed was that with FineIBT enabled function
  prologues have a spurious ENDBR instruction:

    __cfi_foo:
endbr64
subl $hash, %r10d
jz 1f
ud2
nop
    1:
    foo:
endbr64 <--- *sadface*

  This means that any indirect call that fails to target the __cfi
  symbol and instead targets (the regular old) foo+0, will succeed due
  to that second ENDBR.

  Fixing this led to the discovery of a single indirect call that was
  still doing this: ret_from_fork(). Since that's an assembly stub the
  compiler would not generate the proper kCFI indirect call magic and it
  would not get patched.

  Brian came up with the most comprehensive fix -- convert the thing to
  C with only a very thin asm wrapper. This ensures the kernel thread
  boostrap is a proper kCFI call.

  While discussing all this, Kees noted that kCFI hashes could/should be
  poisoned to seal all functions whose address is never taken, further
  limiting the valid kCFI targets -- much like we already do for IBT.

  So what was a 'simple' observation and fix cascaded into a bunch of
  inter-related CFI infrastructure fixes"

* tag 'x86_urgent_for_6.5_rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/cfi: Only define poison_cfi() if CONFIG_X86_KERNEL_IBT=y
  x86/fineibt: Poison ENDBR at +0
  x86: Rewrite ret_from_fork() in C
  x86/32: Remove schedule_tail_wrapper()
  x86/cfi: Extend ENDBR sealing to kCFI
  x86/alternative: Rename apply_ibt_endbr()
  x86/cfi: Extend {JMP,CAKK}_NOSPEC comment

10 months agoMerge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Linus Torvalds [Sat, 15 Jul 2023 02:57:29 +0000 (19:57 -0700)]
Merge tag 'scsi-fixes' of git://git./linux/kernel/git/jejb/scsi

Pull SCSI fixes from James Bottomley:
 "This is a bunch of small driver fixes and a larger rework of zone disk
  handling (which reaches into blk and nvme).

  The aacraid array-bounds fix is now critical since the security people
  turned on -Werror for some build tests, which now fail without it"

* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
  scsi: storvsc: Handle SRB status value 0x30
  scsi: block: Improve checks in blk_revalidate_disk_zones()
  scsi: block: virtio_blk: Set zone limits before revalidating zones
  scsi: block: nullblk: Set zone limits before revalidating zones
  scsi: nvme: zns: Set zone limits before revalidating zones
  scsi: sd_zbc: Set zone limits before revalidating zones
  scsi: ufs: core: Add support for qTimestamp attribute
  scsi: aacraid: Avoid -Warray-bounds warning
  scsi: ufs: ufs-mediatek: Add dependency for RESET_CONTROLLER
  scsi: ufs: core: Update contact email for monitor sysfs nodes
  scsi: scsi_debug: Remove dead code
  scsi: qla2xxx: Use vmalloc_array() and vcalloc()
  scsi: fnic: Use vmalloc_array() and vcalloc()
  scsi: qla2xxx: Fix error code in qla2x00_start_sp()
  scsi: qla2xxx: Silence a static checker warning
  scsi: lpfc: Fix a possible data race in lpfc_unregister_fcf_rescan()

10 months agoMerge tag 'block-6.5-2023-07-14' of git://git.kernel.dk/linux
Linus Torvalds [Sat, 15 Jul 2023 02:52:18 +0000 (19:52 -0700)]
Merge tag 'block-6.5-2023-07-14' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:

 - NVMe pull request via Keith:
      - Don't require quirk to use duplicate namespace identifiers
        (Christoph, Sagi)
      - One more BOGUS_NID quirk (Pankaj)
      - IO timeout and error hanlding fixes for PCI (Keith)
      - Enhanced metadata format mask fix (Ankit)
      - Association race condition fix for fibre channel (Michael)
      - Correct debugfs error checks (Minjie)
      - Use PAGE_SECTORS_SHIFT where needed (Damien)
      - Reduce kernel logs for legacy nguid attribute (Keith)
      - Use correct dma direction when unmapping metadata (Ming)

 - Fix for a flush handling regression in this release (Christoph)

 - Fix for batched request time stamping (Chengming)

 - Fix for a regression in the mq-deadline position calculation (Bart)

 - Lockdep fix for blk-crypto (Eric)

 - Fix for a regression in the Amiga partition handling changes
   (Michael)

* tag 'block-6.5-2023-07-14' of git://git.kernel.dk/linux:
  block: queue data commands from the flush state machine at the head
  blk-mq: fix start_time_ns and alloc_time_ns for pre-allocated rq
  nvme-pci: fix DMA direction of unmapping integrity data
  nvme: don't reject probe due to duplicate IDs for single-ported PCIe devices
  block/mq-deadline: Fix a bug in deadline_from_pos()
  nvme: ensure disabling pairs with unquiesce
  nvme-fc: fix race between error recovery and creating association
  nvme-fc: return non-zero status code when fails to create association
  nvme: fix parameter check in nvme_fault_inject_init()
  nvme: warn only once for legacy uuid attribute
  block: remove dead struc request->completion_data field
  nvme: fix the NVME_ID_NS_NVM_STS_MASK definition
  nvmet: use PAGE_SECTORS_SHIFT
  nvme: add BOGUS_NID quirk for Samsung SM953
  blk-crypto: use dynamic lock class for blk_crypto_profile::lock
  block/partition: fix signedness issue for Amiga partitions

10 months agoMerge tag 'io_uring-6.5-2023-07-14' of git://git.kernel.dk/linux
Linus Torvalds [Sat, 15 Jul 2023 02:46:54 +0000 (19:46 -0700)]
Merge tag 'io_uring-6.5-2023-07-14' of git://git.kernel.dk/linux

Pull io_uring fix from Jens Axboe:
 "Just a single tweak for the wait logic in io_uring"

* tag 'io_uring-6.5-2023-07-14' of git://git.kernel.dk/linux:
  io_uring: Use io_schedule* in cqring wait

10 months agoMerge tag 'riscv-for-linus-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Fri, 14 Jul 2023 18:14:07 +0000 (11:14 -0700)]
Merge tag 'riscv-for-linus-6.5-rc2' of git://git./linux/kernel/git/riscv/linux

Pull RISC-V fixes from Palmer Dabbelt:

 - fix a formatting error in the hwprobe documentation

 - fix a spurious warning in the RISC-V PMU driver

 - fix memory detection on rv32 (problem does not manifest on any known
   system)

 - avoid parsing legacy parsing of I in ACPI ISA strings

* tag 'riscv-for-linus-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
  RISC-V: Don't include Zicsr or Zifencei in I from ACPI
  riscv: mm: fix truncation warning on RV32
  perf: RISC-V: Remove PERF_HES_STOPPED flag checking in riscv_pmu_start()
  Documentation: RISC-V: hwprobe: Fix a formatting error

10 months agoMerge tag 'pm-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Fri, 14 Jul 2023 18:07:04 +0000 (11:07 -0700)]
Merge tag 'pm-6.5-rc2' of git://git./linux/kernel/git/rafael/linux-pm

Pull power management fixes from Rafael Wysocki:
 "These fix hibernation (after recent changes), frequency QoS and the
  sparc cpufreq driver.

  Specifics:

   - Unbreak the /sys/power/resume interface after recent changes (Azat
     Khuzhin).

   - Allow PM_QOS_DEFAULT_VALUE to be used with frequency QoS (Chungkai
     Yang).

   - Remove __init from cpufreq callbacks in the sparc driver, because
     they may be called after initialization too (Viresh Kumar)"

* tag 'pm-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  cpufreq: sparc: Don't mark cpufreq callbacks with __init
  PM: QoS: Restore support for default value on frequency QoS
  PM: hibernate: Fix writing maj:min to /sys/power/resume

10 months agoMerge branches 'pm-sleep' and 'pm-qos'
Rafael J. Wysocki [Fri, 14 Jul 2023 17:13:21 +0000 (19:13 +0200)]
Merge branches 'pm-sleep' and 'pm-qos'

Merge a PM QoS fix and a hibernation fix for 6.5-rc2.

 - Unbreak the /sys/power/resume interface after recent changes (Azat
   Khuzhin).

 - Allow PM_QOS_DEFAULT_VALUE to be used with frequency QoS (Chungkai
   Yang).

* pm-sleep:
  PM: hibernate: Fix writing maj:min to /sys/power/resume

* pm-qos:
  PM: QoS: Restore support for default value on frequency QoS

10 months agocifs: fix mid leak during reconnection after timeout threshold
Shyam Prasad N [Fri, 14 Jul 2023 08:56:33 +0000 (08:56 +0000)]
cifs: fix mid leak during reconnection after timeout threshold

When the number of responses with status of STATUS_IO_TIMEOUT
exceeds a specified threshold (NUM_STATUS_IO_TIMEOUT), we reconnect
the connection. But we do not return the mid, or the credits
returned for the mid, or reduce the number of in-flight requests.

This bug could result in the server->in_flight count to go bad,
and also cause a leak in the mids.

This change moves the check to a few lines below where the
response is decrypted, even of the response is read from the
transform header. This way, the code for returning the mids
can be reused.

Also, the cifs_reconnect was reconnecting just the transport
connection before. In case of multi-channel, this may not be
what we want to do after several timeouts. Changed that to
reconnect the session and the tree too.

Also renamed NUM_STATUS_IO_TIMEOUT to a more appropriate name
MAX_STATUS_IO_TIMEOUT.

Fixes: 8e670f77c4a5 ("Handle STATUS_IO_TIMEOUT gracefully")
Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
10 months agocifs: is_network_name_deleted should return a bool
Shyam Prasad N [Fri, 14 Jul 2023 08:56:34 +0000 (08:56 +0000)]
cifs: is_network_name_deleted should return a bool

Currently, is_network_name_deleted and it's implementations
do not return anything if the network name did get deleted.
So the function doesn't fully achieve what it advertizes.

Changed the function to return a bool instead. It will now
return true if the error returned is STATUS_NETWORK_NAME_DELETED
and the share (tree id) was found to be connected. It returns
false otherwise.

Signed-off-by: Shyam Prasad N <sprasad@microsoft.com>
Acked-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
10 months agoMerge tag 'drm-fixes-2023-07-14-1' of git://anongit.freedesktop.org/drm/drm
Linus Torvalds [Fri, 14 Jul 2023 16:10:28 +0000 (09:10 -0700)]
Merge tag 'drm-fixes-2023-07-14-1' of git://anongit.freedesktop.org/drm/drm

Pull drm fixes from Dave Airlie:
 "There were a bunch of fixes lined up for 2 weeks, so we have quite a
  few scattered fixes, mostly amdgpu and i915, but ttm has a bunch and
  nouveau makes an appearance.

  So a bit busier than usual for rc2, but nothing seems out of the
  ordinary.

  fbdev:
   - dma: Fix documented default preferred_bpp value

  ttm:
   - fix warning that we shouldn't mix && and ||
   - never consider pinned BOs for eviction&swap
   - Don't leak a resource on eviction error
   - Don't leak a resource on swapout move error
   - fix bulk_move corruption when adding a entry

  client:
   - Send hotplug event after registering a client

  dma-buf:
   - keep the signaling time of merged fences v3
   - fix an error pointer vs NULL bug

  sched:
   - wait for all deps in kill jobs
   - call set fence parent from scheduled

  i915:
   - Don't preserve dpll_hw_state for slave crtc in Bigjoiner
   - Consider OA buffer boundary when zeroing out reports
   - Remove dead code from gen8_pte_encode
   - Fix one wrong caching mode enum usage

  amdgpu:
   - SMU i2c locking fix
   - Fix a possible deadlock in process restoration for ROCm apps
   - Disable PCIe lane/speed switching on Intel platforms (the platforms
     don't support it)

  nouveau:
   - disp: fix HDMI on gt215+
   - disp/g94: enable HDMI
   - acr: Abort loading ACR if no firmware was found
   - bring back blit subchannel for pre nv50 GPUs
   - Fix drm_dp_remove_payload() invocation

  ivpu:
   - Fix VPU register access in irq disable
   - Clear specific interrupt status bits on C0

  bridge:
   - dw_hdmi: fix connector access for scdc
   - ti-sn65dsi86: Fix auxiliary bus lifetime

  panel:
   - simple: Add connector_type for innolux_at043tn24
   - simple: Add Powertip PH800480T013 drm_display_mode flags"

* tag 'drm-fixes-2023-07-14-1' of git://anongit.freedesktop.org/drm/drm: (32 commits)
  drm/nouveau: bring back blit subchannel for pre nv50 GPUs
  drm/nouveau/acr: Abort loading ACR if no firmware was found
  drm/amd: Align SMU11 SMU_MSG_OverridePcieParameters implementation with SMU13
  drm/amd: Move helper for dynamic speed switch check out of smu13
  drm/amd/pm: conditionally disable pcie lane/speed switching for SMU13
  drm/amd/pm: share the code around SMU13 pcie parameters update
  drm/amdgpu: avoid restore process run into dead loop.
  drm/amd/pm: fix smu i2c data read risk
  drm/nouveau/disp/g94: enable HDMI
  drm/nouveau/disp: fix HDMI on gt215+
  drm/client: Send hotplug event after registering a client
  drm/i915: Fix one wrong caching mode enum usage
  drm/i915: Remove dead code from gen8_pte_encode
  drm/i915/perf: Consider OA buffer boundary when zeroing out reports
  drm/i915: Don't preserve dpll_hw_state for slave crtc in Bigjoiner
  drm/ttm: never consider pinned BOs for eviction&swap
  drm/fbdev-dma: Fix documented default preferred_bpp value
  dma-buf: fix an error pointer vs NULL bug
  accel/ivpu: Clear specific interrupt status bits on C0
  accel/ivpu: Fix VPU register access in irq disable
  ...

10 months agoMerge tag 'ceph-for-6.5-rc2' of https://github.com/ceph/ceph-client
Linus Torvalds [Fri, 14 Jul 2023 16:05:15 +0000 (09:05 -0700)]
Merge tag 'ceph-for-6.5-rc2' of https://github.com/ceph/ceph-client

Pull ceph fix from Ilya Dryomov:
 "A fix to prevent a potential buffer overrun in the messenger, marked
  for stable"

* tag 'ceph-for-6.5-rc2' of https://github.com/ceph/ceph-client:
  libceph: harden msgr2.1 frame segment length checks

10 months agoblock: queue data commands from the flush state machine at the head
Christoph Hellwig [Fri, 14 Jul 2023 14:30:14 +0000 (16:30 +0200)]
block: queue data commands from the flush state machine at the head

We used to insert the data commands following a pre-flush to the head
of the queue until commit 1e82fadfc6b ("blk-mq: do not do head insertions
post-pre-flush commands").  Not doing this seems to cause hangs of
such commands on NFS workloads when exported from file systems with
SATA SSDs.  I have no idea why this would starve these workloads,
but doing a semantic revert of this patch (which looks quite different
due to various other changes) fixes the hangs.

Fixes: 1e82fadfc6b ("blk-mq: do not do head insertions post-pre-flush commands")
Reported-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Chuck Lever <chuck.lever@oracle.com>
Link: https://lore.kernel.org/r/20230714143014.11879-1-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agoiommu/sva: Fix signedness bug in iommu_sva_alloc_pasid()
Dan Carpenter [Thu, 6 Apr 2023 08:55:31 +0000 (11:55 +0300)]
iommu/sva: Fix signedness bug in iommu_sva_alloc_pasid()

The ida_alloc_range() function returns negative error codes on error.
On success it returns values in the min to max range (inclusive).  It
never returns more then INT_MAX even if "max" is higher.  It never
returns values in the 0 to (min - 1) range.

The bug is that "min" is an unsigned int so negative error codes will
be promoted to high positive values errors treated as success.

Fixes: 1a14bf0fc7ed ("iommu/sva: Use GFP_KERNEL for pasid allocation")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/6b32095d-7491-4ebb-a850-12e96209eaaf@kili.mountain
Signed-off-by: Joerg Roedel <jroedel@suse.de>
10 months agoiommu: Fix crash during syfs iommu_groups/N/type
Jason Gunthorpe [Mon, 26 Jun 2023 15:13:11 +0000 (12:13 -0300)]
iommu: Fix crash during syfs iommu_groups/N/type

The err_restore_domain flow was accidently inserted into the success path
in commit 1000dccd5d13 ("iommu: Allow IOMMU_RESV_DIRECT to work on
ARM"). It should only happen if iommu_create_device_direct_mappings()
fails. This caused the domains the be wrongly changed and freed whenever
the sysfs is used, resulting in an oops:

  BUG: kernel NULL pointer dereference, address: 0000000000000000
  #PF: supervisor read access in kernel mode
  #PF: error_code(0x0000) - not-present page
  PGD 0 P4D 0
  Oops: 0000 [#1] PREEMPT SMP NOPTI
  CPU: 1 PID: 3417 Comm: avocado Not tainted 6.4.0-rc4-next-20230602 #3
  Hardware name: Dell Inc. PowerEdge R6515/07PXPY, BIOS 2.3.6 07/06/2021
  RIP: 0010:__iommu_attach_device+0xc/0xa0
  Code: c0 c3 cc cc cc cc 48 89 f0 c3 cc cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 41 54 55 48 8b 47 08 <48> 8b 00 48 85 c0 74 74 48 89 f5 e8 64 12 49 00 41 89 c4 85 c0 74
  RSP: 0018:ffffabae0220bd48 EFLAGS: 00010246
  RAX: 0000000000000000 RBX: ffff9ac04f70e410 RCX: 0000000000000001
  RDX: ffff9ac044db20c0 RSI: ffff9ac044fa50d0 RDI: ffff9ac04f70e410
  RBP: ffff9ac044fa50d0 R08: 1000000100209001 R09: 00000000000002dc
  R10: 0000000000000000 R11: 0000000000000000 R12: ffff9ac043d54700
  R13: ffff9ac043d54700 R14: 0000000000000001 R15: 0000000000000001
  FS:  00007f02e30ae000(0000) GS:ffff9afeb2440000(0000) knlGS:0000000000000000
  CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  CR2: 0000000000000000 CR3: 000000012afca006 CR4: 0000000000770ee0
  PKRU: 55555554
  Call Trace:
   <TASK>
   ? __die+0x24/0x70
   ? page_fault_oops+0x82/0x150
   ? __iommu_queue_command_sync+0x80/0xc0
   ? exc_page_fault+0x69/0x150
   ? asm_exc_page_fault+0x26/0x30
   ? __iommu_attach_device+0xc/0xa0
   ? __iommu_attach_device+0x1c/0xa0
   __iommu_device_set_domain+0x42/0x80
   __iommu_group_set_domain_internal+0x5d/0x160
   iommu_setup_default_domain+0x318/0x400
   iommu_group_store_type+0xb1/0x200
   kernfs_fop_write_iter+0x12f/0x1c0
   vfs_write+0x2a2/0x3b0
   ksys_write+0x63/0xe0
   do_syscall_64+0x3f/0x90
   entry_SYSCALL_64_after_hwframe+0x6e/0xd8
  RIP: 0033:0x7f02e2f14a6f

Reorganize the error flow so that the success branch and error branches
are clearer.

Fixes: 1000dccd5d13 ("iommu: Allow IOMMU_RESV_DIRECT to work on ARM")
Reported-by: Dheeraj Kumar Srivastava <dheerajkumar.srivastava@amd.com>
Tested-by: Vasant Hegde <vasant.hegde@amd.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Link: https://lore.kernel.org/r/0-v1-5bd8cc969d9e+1f1-iommu_set_def_fix_jgg@nvidia.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
10 months agodrm/panel: ld9040: Register a backlight device
Paul Cercueil [Sat, 8 Jul 2023 08:40:26 +0000 (10:40 +0200)]
drm/panel: ld9040: Register a backlight device

Register a backlight device to be able to switch between all the gamma
levels.

v2: Remove .get_brightness() callback, use bl_get_data() and
    backlight_get_brightness()

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230708084027.18352-3-paul@crapouillou.net
10 months agodrm/panel: ld9040: Use better magic values
Paul Cercueil [Sat, 8 Jul 2023 08:40:25 +0000 (10:40 +0200)]
drm/panel: ld9040: Use better magic values

I have no idea what the prior magic values mean, and I have no idea
what my replacement (extracted from [1]) magic values mean.

What I do know, is that these new values result in a much better
picture, where the blacks are really black (as you would expect on an
AMOLED display) instead of grey-ish.

[1]: https://github.com/dorimanx/Dorimanx-SG2-I9100-Kernel/blob/master-jelly-bean/arch/arm/mach-exynos/u1-panel.h

v2: Remove spurious new line

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20230708084027.18352-2-paul@crapouillou.net
10 months agotracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails
Masami Hiramatsu (Google) [Tue, 11 Jul 2023 14:16:07 +0000 (23:16 +0900)]
tracing/probes: Fix to record 0-length data_loc in fetch_store_string*() if fails

Fix to record 0-length data to data_loc in fetch_store_string*() if it fails
to get the string data.
Currently those expect that the data_loc is updated by store_trace_args() if
it returns the error code. However, that does not work correctly if the
argument is an array of strings. In that case, store_trace_args() only clears
the first entry of the array (which may have no error) and leaves other
entries. So it should be cleared by fetch_store_string*() itself.
Also, 'dyndata' and 'maxlen' in store_trace_args() should be updated
only if it is used (ret > 0 and argument is a dynamic data.)

Link: https://lore.kernel.org/all/168908496683.123124.4761206188794205601.stgit@devnote2/
Fixes: 40b53b771806 ("tracing: probeevent: Add array type support")
Cc: stable@vger.kernel.org
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
10 months agoMerge tag 'amd-drm-fixes-6.5-2023-07-12' of https://gitlab.freedesktop.org/agd5f...
Dave Airlie [Fri, 14 Jul 2023 01:44:54 +0000 (11:44 +1000)]
Merge tag 'amd-drm-fixes-6.5-2023-07-12' of https://gitlab.freedesktop.org/agd5f/linux into drm-fixes

amd-drm-fixes-6.5-2023-07-12:

amdgpu:
- SMU i2c locking fix
- Fix a possible deadlock in process restoration for ROCm apps
- Disable PCIe lane/speed switching on Intel platforms (the platforms don't support it)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230712184009.7740-1-alexander.deucher@amd.com
10 months agoMerge tag 'drm-intel-fixes-2023-07-13' of git://anongit.freedesktop.org/drm/drm-intel...
Dave Airlie [Fri, 14 Jul 2023 01:13:14 +0000 (11:13 +1000)]
Merge tag 'drm-intel-fixes-2023-07-13' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes

- Don't preserve dpll_hw_state for slave crtc in Bigjoiner (Stanislav Lisovskiy)
- Consider OA buffer boundary when zeroing out reports [perf] (Umesh Nerlige Ramappa)
- Remove dead code from gen8_pte_encode (Tvrtko Ursulin)
- Fix one wrong caching mode enum usage (Tvrtko Ursulin)

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/ZK+nHLCltaxoxVw/@tursulin-desk
10 months agoMerge tag 'drm-misc-fixes-2023-07-13' of ssh://git.freedesktop.org/git/drm/drm-misc...
Dave Airlie [Fri, 14 Jul 2023 00:37:18 +0000 (10:37 +1000)]
Merge tag 'drm-misc-fixes-2023-07-13' of ssh://git.freedesktop.org/git/drm/drm-misc into drm-fixes

A couple of nouveau patches addressing improving HDMI support and
firmware handling, a fix for TTM to skip pinned BO when evicting, and a
fix for the fbdev documentation.

Signed-off-by: Dave Airlie <airlied@redhat.com>
From: Maxime Ripard <mripard@redhat.com>
Link: https://patchwork.freedesktop.org/patch/msgid/nq3ke75juephbex5acfyi5t6bxv22nhmfcpfhru55haj2nv3us@gehrlmjbqgjk
10 months agoMerge tag 'erofs-for-6.5-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Thu, 13 Jul 2023 21:35:02 +0000 (14:35 -0700)]
Merge tag 'erofs-for-6.5-rc2-fixes' of git://git./linux/kernel/git/xiang/erofs

Pull erofs fixes from Gao Xiang:
 "Three patches address regressions related to post-EOF unexpected
  behaviors and fsdax unavailability of chunk-based regular files.

  The other two patches mainly get rid of kmap_atomic() and simplify
  z_erofs_transform_plain().

   - Fix two unexpected loop cases when reading beyond EOF

   - Fix fsdax unavailability for chunk-based regular files

   - Get rid of the remaining kmap_atomic()

   - Minor cleanups"

* tag 'erofs-for-6.5-rc2-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
  erofs: fix fsdax unavailability for chunk-based regular files
  erofs: avoid infinite loop in z_erofs_do_read_page() when reading beyond EOF
  erofs: avoid useless loops in z_erofs_pcluster_readmore() when reading beyond EOF
  erofs: simplify z_erofs_transform_plain()
  erofs: get rid of the remaining kmap_atomic()

10 months agoMerge tag 'net-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Thu, 13 Jul 2023 21:21:22 +0000 (14:21 -0700)]
Merge tag 'net-6.5-rc2' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from netfilter, wireless and ebpf.

  Current release - regressions:

   - netfilter: conntrack: gre: don't set assured flag for clash entries

   - wifi: iwlwifi: remove 'use_tfh' config to fix crash

  Previous releases - regressions:

   - ipv6: fix a potential refcount underflow for idev

   - icmp6: ifix null-ptr-deref of ip6_null_entry->rt6i_idev in
     icmp6_dev()

   - bpf: fix max stack depth check for async callbacks

   - eth: mlx5e:
      - check for NOT_READY flag state after locking
      - fix page_pool page fragment tracking for XDP

   - eth: igc:
      - fix tx hang issue when QBV gate is closed
      - fix corner cases for TSN offload

   - eth: octeontx2-af: Move validation of ptp pointer before its usage

   - eth: ena: fix shift-out-of-bounds in exponential backoff

  Previous releases - always broken:

   - core: prevent skb corruption on frag list segmentation

   - sched:
      - cls_fw: fix improper refcount update leads to use-after-free
      - sch_qfq: account for stab overhead in qfq_enqueue

   - netfilter:
      - report use refcount overflow
      - prevent OOB access in nft_byteorder_eval

   - wifi: mt7921e: fix init command fail with enabled device

   - eth: ocelot: fix oversize frame dropping for preemptible TCs

   - eth: fec: recycle pages for transmitted XDP frames"

* tag 'net-6.5-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (79 commits)
  selftests: tc-testing: add test for qfq with stab overhead
  net/sched: sch_qfq: account for stab overhead in qfq_enqueue
  selftests: tc-testing: add tests for qfq mtu sanity check
  net/sched: sch_qfq: reintroduce lmax bound check for MTU
  wifi: cfg80211: fix receiving mesh packets without RFC1042 header
  wifi: rtw89: debug: fix error code in rtw89_debug_priv_send_h2c_set()
  net: txgbe: fix eeprom calculation error
  net/sched: make psched_mtu() RTNL-less safe
  net: ena: fix shift-out-of-bounds in exponential backoff
  netdevsim: fix uninitialized data in nsim_dev_trap_fa_cookie_write()
  net/sched: flower: Ensure both minimum and maximum ports are specified
  MAINTAINERS: Add another mailing list for QUALCOMM ETHQOS ETHERNET DRIVER
  docs: netdev: update the URL of the status page
  wifi: iwlwifi: remove 'use_tfh' config to fix crash
  xdp: use trusted arguments in XDP hints kfuncs
  bpf: cpumap: Fix memory leak in cpu_map_update_elem
  wifi: airo: avoid uninitialized warning in airo_get_rate()
  octeontx2-pf: Add additional check for MCAM rules
  net: dsa: Removed unneeded of_node_put in felix_parse_ports_node
  net: fec: use netdev_err_once() instead of netdev_err()
  ...

10 months agoMerge tag 'trace-v6.5-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace...
Linus Torvalds [Thu, 13 Jul 2023 20:44:28 +0000 (13:44 -0700)]
Merge tag 'trace-v6.5-rc1-3' of git://git./linux/kernel/git/trace/linux-trace

Pull tracing fixes from Steven Rostedt:

 - Fix some missing-prototype warnings

 - Fix user events struct args (did not include size of struct)

   When creating a user event, the "struct" keyword is to denote that
   the size of the field will be passed in. But the parsing failed to
   handle this case.

 - Add selftest to struct sizes for user events

 - Fix sample code for direct trampolines.

   The sample code for direct trampolines attached to handle_mm_fault().
   But the prototype changed and the direct trampoline sample code was
   not updated. Direct trampolines needs to have the arguments correct
   otherwise it can fail or crash the system.

 - Remove unused ftrace_regs_caller_ret() prototype.

 - Quiet false positive of FORTIFY_SOURCE

   Due to backward compatibility, the structure used to save stack
   traces in the kernel had a fixed size of 8. This structure is
   exported to user space via the tracing format file. A change was made
   to allow more than 8 functions to be recorded, and user space now
   uses the size field to know how many functions are actually in the
   stack.

   But the structure still has size of 8 (even though it points into the
   ring buffer that has the required amount allocated to hold a full
   stack.

   This was fine until the fortifier noticed that the
   memcpy(&entry->caller, stack, size) was greater than the 8 functions
   and would complain at runtime about it.

   Hide this by using a pointer to the stack location on the ring buffer
   instead of using the address of the entry structure caller field.

 - Fix a deadloop in reading trace_pipe that was caused by a mismatch
   between ring_buffer_empty() returning false which then asked to read
   the data, but the read code uses rb_num_of_entries() that returned
   zero, and causing a infinite "retry".

 - Fix a warning caused by not using all pages allocated to store ftrace
   functions, where this can happen if the linker inserts a bunch of
   "NULL" entries, causing the accounting of how many pages needed to be
   off.

 - Fix histogram synthetic event crashing when the start event is
   removed and the end event is still using a variable from it

 - Fix memory leak in freeing iter->temp in tracing_release_pipe()

* tag 'trace-v6.5-rc1-3' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tracing: Fix memory leak of iter->temp when reading trace_pipe
  tracing/histograms: Add histograms to hist_vars if they have referenced variables
  tracing: Stop FORTIFY_SOURCE complaining about stack trace caller
  ftrace: Fix possible warning on checking all pages used in ftrace_process_locs()
  ring-buffer: Fix deadloop issue on reading trace_pipe
  tracing: arm64: Avoid missing-prototype warnings
  selftests/user_events: Test struct size match cases
  tracing/user_events: Fix struct arg size match check
  x86/ftrace: Remove unsued extern declaration ftrace_regs_caller_ret()
  arm64: ftrace: Add direct call trampoline samples support
  samples: ftrace: Save required argument registers in sample trampolines

10 months agoMerge tag 'for-linus-6.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Thu, 13 Jul 2023 20:39:36 +0000 (13:39 -0700)]
Merge tag 'for-linus-6.5-rc2-tag' of git://git./linux/kernel/git/xen/tip

Pull xen fixes from Juergen Gross:

 - a cleanup of the Xen related ELF-notes

 - a fix for virtio handling in Xen dom0 when running Xen in a VM

* tag 'for-linus-6.5-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen/virtio: Fix NULL deref when a bridge of PCI root bus has no parent
  x86/Xen: tidy xen-head.S

10 months agoMerge tag 'sh-for-v6.5-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubit...
Linus Torvalds [Thu, 13 Jul 2023 20:34:00 +0000 (13:34 -0700)]
Merge tag 'sh-for-v6.5-tag2' of git://git./linux/kernel/git/glaubitz/sh-linux

Pull sh fixes from John Paul Adrian Glaubitz:
 "The sh updates introduced multiple regressions.

  In particular, the change a8ac2961148e ("sh: Avoid using IRQ0 on SH3
  and SH4") causes several boards to hang during boot due to incorrect
  IRQ numbers.

  Geert Uytterhoeven has contributed patches that handle the virq offset
  in the IRQ code for the dreamcast, highlander and r2d boards while
  Artur Rojek has contributed a patch which handles the virq offset for
  the hd64461 companion chip"

* tag 'sh-for-v6.5-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  sh: hd64461: Handle virq offset for offchip IRQ base and HD64461 IRQ
  sh: mach-dreamcast: Handle virq offset in cascaded IRQ demux
  sh: mach-highlander: Handle virq offset in cascaded IRL demux
  sh: mach-r2d: Handle virq offset in cascaded IRL demux

10 months agoMerge tag 'nvme-6.5-2023-07-13' of git://git.infradead.org/nvme into block-6.5
Jens Axboe [Thu, 13 Jul 2023 20:26:38 +0000 (14:26 -0600)]
Merge tag 'nvme-6.5-2023-07-13' of git://git.infradead.org/nvme into block-6.5

Pull NVMe fixes from Keith:

"nvme fixes for Linux 6.5

 - Don't require quirk to use duplicate namespace identifiers
   (Christoph, Sagi)
 - One more BOGUS_NID quirk (Pankaj)
 - IO timeout and error hanlding fixes for PCI (Keith)
 - Enhanced metadata format mask fix (Ankit)
 - Association race condition fix for fibre channel (Michael)
 - Correct debugfs error checks (Minjie)
 - Use PAGE_SECTORS_SHIFT where needed (Damien)
 - Reduce kernel logs for legacy nguid attribute (Keith)
 - Use correct dma direction when unmapping metadata (Ming)"

* tag 'nvme-6.5-2023-07-13' of git://git.infradead.org/nvme:
  nvme-pci: fix DMA direction of unmapping integrity data
  nvme: don't reject probe due to duplicate IDs for single-ported PCIe devices
  nvme: ensure disabling pairs with unquiesce
  nvme-fc: fix race between error recovery and creating association
  nvme-fc: return non-zero status code when fails to create association
  nvme: fix parameter check in nvme_fault_inject_init()
  nvme: warn only once for legacy uuid attribute
  nvme: fix the NVME_ID_NS_NVM_STS_MASK definition
  nvmet: use PAGE_SECTORS_SHIFT
  nvme: add BOGUS_NID quirk for Samsung SM953

10 months agoblk-mq: fix start_time_ns and alloc_time_ns for pre-allocated rq
Chengming Zhou [Mon, 10 Jul 2023 10:55:16 +0000 (18:55 +0800)]
blk-mq: fix start_time_ns and alloc_time_ns for pre-allocated rq

The iocost rely on rq start_time_ns and alloc_time_ns to tell saturation
state of the block device. Most of the time request is allocated after
rq_qos_throttle() and its alloc_time_ns or start_time_ns won't be affected.

But for plug batched allocation introduced by the commit 47c122e35d7e
("block: pre-allocate requests if plug is started and is a batch"), we can
rq_qos_throttle() after the allocation of the request. This is what the
blk_mq_get_cached_request() does.

In this case, the cached request alloc_time_ns or start_time_ns is much
ahead if blocked in any qos ->throttle().

Fix it by setting alloc_time_ns and start_time_ns to now when the allocated
request is actually used.

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20230710105516.2053478-1-chengming.zhou@linux.dev
Signed-off-by: Jens Axboe <axboe@kernel.dk>
10 months agosparc: mark __arch_xchg() as __always_inline
Arnd Bergmann [Wed, 28 Jun 2023 09:49:18 +0000 (11:49 +0200)]
sparc: mark __arch_xchg() as __always_inline

An otherwise correct change to the atomic operations uncovered an
existing bug in the sparc __arch_xchg() function, which is calls
__xchg_called_with_bad_pointer() when its arguments are unknown at
compile time:

ERROR: modpost: "__xchg_called_with_bad_pointer" [lib/atomic64_test.ko] undefined!

This now happens because gcc determines that it's better to not inline the
function. Avoid this by just marking the function as __always_inline
to force the compiler to do the right thing here.

Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/all/c525adc9-6623-4660-8718-e0c9311563b8@roeck-us.net/
Fixes: d12157efc8e08 ("locking/atomic: make atomic*_{cmp,}xchg optional")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Acked-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Andi Shyti <andi.shyti@linux.intel.com>
Link: https://lore.kernel.org/r/20230628094938.2318171-1-arnd@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
10 months agoMAINTAINERS: Foolishly claim maintainership of string routines
Kees Cook [Wed, 12 Jul 2023 19:46:29 +0000 (12:46 -0700)]
MAINTAINERS: Foolishly claim maintainership of string routines

Since the string API is tightly coupled with FORTIFY_SOURCE, I am
offering myself up as maintainer for it. Thankfully Andy is already a
reviewer and can keep me on the straight and narrow.

Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20230712194625.never.252-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
10 months agoRevert "tracing: Add "(fault)" name injection to kernel probes"
Masami Hiramatsu (Google) [Tue, 11 Jul 2023 14:15:57 +0000 (23:15 +0900)]
Revert "tracing: Add "(fault)" name injection to kernel probes"

This reverts commit 2e9906f84fc7c99388bb7123ade167250d50f1c0.

It was turned out that commit 2e9906f84fc7 ("tracing: Add "(fault)"
name injection to kernel probes") did not work correctly and probe
events still show just '(fault)' (instead of '"(fault)"'). Also,
current '(fault)' is more explicit that it faulted.

This also moves FAULT_STRING macro to trace.h so that synthetic
event can keep using it, and uses it in trace_probe.c too.

Link: https://lore.kernel.org/all/168908495772.123124.1250788051922100079.stgit@devnote2/
Link: https://lore.kernel.org/all/20230706230642.3793a593@rorschach.local.home/
Cc: stable@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Tom Zanussi <zanussi@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
10 months agotracing/probes: Fix to update dynamic data counter if fetcharg uses it
Masami Hiramatsu (Google) [Tue, 11 Jul 2023 14:15:48 +0000 (23:15 +0900)]
tracing/probes: Fix to update dynamic data counter if fetcharg uses it

Fix to update dynamic data counter ('dyndata') and max length ('maxlen')
only if the fetcharg uses the dynamic data. Also get out arg->dynamic
from unlikely(). This makes dynamic data address wrong if
process_fetch_insn() returns error on !arg->dynamic case.

Link: https://lore.kernel.org/all/168908494781.123124.8160245359962103684.stgit@devnote2/
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://lore.kernel.org/all/20230710233400.5aaf024e@gandalf.local.home/
Fixes: 9178412ddf5a ("tracing: probeevent: Return consumed bytes of dynamic area")
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
10 months agotracing/probes: Fix not to count error code to total length
Masami Hiramatsu (Google) [Tue, 11 Jul 2023 14:15:38 +0000 (23:15 +0900)]
tracing/probes: Fix not to count error code to total length

Fix not to count the error code (which is minus value) to the total
used length of array, because it can mess up the return code of
process_fetch_insn_bottom(). Also clear the 'ret' value because it
will be used for calculating next data_loc entry.

Link: https://lore.kernel.org/all/168908493827.123124.2175257289106364229.stgit@devnote2/
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/8819b154-2ba1-43c3-98a2-cbde20892023@moroto.mountain/
Fixes: 9b960a38835f ("tracing: probeevent: Unify fetch_insn processing common part")
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
10 months agotracing/probes: Fix to avoid double count of the string length on the array
Masami Hiramatsu (Google) [Tue, 11 Jul 2023 14:15:29 +0000 (23:15 +0900)]
tracing/probes: Fix to avoid double count of the string length on the array

If an array is specified with the ustring or symstr, the length of the
strings are accumlated on both of 'ret' and 'total', which means the
length is double counted.
Just set the length to the 'ret' value for avoiding double counting.

Link: https://lore.kernel.org/all/168908492917.123124.15076463491122036025.stgit@devnote2/
Reported-by: Dan Carpenter <dan.carpenter@linaro.org>
Closes: https://lore.kernel.org/all/8819b154-2ba1-43c3-98a2-cbde20892023@moroto.mountain/
Fixes: 88903c464321 ("tracing/probe: Add ustring type for user-space string")
Cc: stable@vger.kernel.org
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
10 months agofprobes: Add a comment why fprobe_kprobe_handler exits if kprobe is running
Masami Hiramatsu (Google) [Fri, 7 Jul 2023 16:38:03 +0000 (01:38 +0900)]
fprobes: Add a comment why fprobe_kprobe_handler exits if kprobe is running

Add a comment the reason why fprobe_kprobe_handler() exits if any other
kprobe is running.

Link: https://lore.kernel.org/all/168874788299.159442.2485957441413653858.stgit@devnote2/
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Link: https://lore.kernel.org/all/20230706120916.3c6abf15@gandalf.local.home/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
10 months agonvme-pci: fix DMA direction of unmapping integrity data
Ming Lei [Thu, 13 Jul 2023 09:26:20 +0000 (17:26 +0800)]
nvme-pci: fix DMA direction of unmapping integrity data

DMA direction should be taken in dma_unmap_page() for unmapping integrity
data.

Fix this DMA direction, and reported in Guangwu's test.

Reported-by: Guangwu Zhang <guazhang@redhat.com>
Fixes: 4aedb705437f ("nvme-pci: split metadata handling from nvme_map_data / nvme_unmap_data")
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
10 months agonvme: don't reject probe due to duplicate IDs for single-ported PCIe devices
Christoph Hellwig [Thu, 13 Jul 2023 13:30:42 +0000 (15:30 +0200)]
nvme: don't reject probe due to duplicate IDs for single-ported PCIe devices

While duplicate IDs are still very harmful, including the potential to easily
see changing devices in /dev/disk/by-id, it turn out they are extremely
common for cheap end user NVMe devices.

Relax our check for them for so that it doesn't reject the probe on
single-ported PCIe devices, but prints a big warning instead.  In doubt
we'd still like to see quirk entries to disable the potential for
changing supposed stable device identifier links, but this will at least
allow users how have two (or more) of these devices to use them without
having to manually add a new PCI ID entry with the quirk through sysfs or
by patching the kernel.

Fixes: 2079f41ec6ff ("nvme: check that EUI/GUID/UUID are globally unique")
Cc: stable@vger.kernel.org # 6.0+
Co-developed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Keith Busch <kbusch@kernel.org>
10 months agotracing: Fix memory leak of iter->temp when reading trace_pipe
Zheng Yejian [Thu, 13 Jul 2023 14:14:35 +0000 (22:14 +0800)]
tracing: Fix memory leak of iter->temp when reading trace_pipe

kmemleak reports:
  unreferenced object 0xffff88814d14e200 (size 256):
    comm "cat", pid 336, jiffies 4294871818 (age 779.490s)
    hex dump (first 32 bytes):
      04 00 01 03 00 00 00 00 08 00 00 00 00 00 00 00  ................
      0c d8 c8 9b ff ff ff ff 04 5a ca 9b ff ff ff ff  .........Z......
    backtrace:
      [<ffffffff9bdff18f>] __kmalloc+0x4f/0x140
      [<ffffffff9bc9238b>] trace_find_next_entry+0xbb/0x1d0
      [<ffffffff9bc9caef>] trace_print_lat_context+0xaf/0x4e0
      [<ffffffff9bc94490>] print_trace_line+0x3e0/0x950
      [<ffffffff9bc95499>] tracing_read_pipe+0x2d9/0x5a0
      [<ffffffff9bf03a43>] vfs_read+0x143/0x520
      [<ffffffff9bf04c2d>] ksys_read+0xbd/0x160
      [<ffffffff9d0f0edf>] do_syscall_64+0x3f/0x90
      [<ffffffff9d2000aa>] entry_SYSCALL_64_after_hwframe+0x6e/0xd8

when reading file 'trace_pipe', 'iter->temp' is allocated or relocated
in trace_find_next_entry() but not freed before 'trace_pipe' is closed.

To fix it, free 'iter->temp' in tracing_release_pipe().

Link: https://lore.kernel.org/linux-trace-kernel/20230713141435.1133021-1-zhengyejian1@huawei.com
Cc: stable@vger.kernel.org
Fixes: ff895103a84ab ("tracing: Save off entry when peeking at next entry")
Signed-off-by: Zheng Yejian <zhengyejian1@huawei.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
10 months agodrm/ssd130x: Change pixel format used to compute the buffer size
Javier Martinez Canillas [Thu, 13 Jul 2023 08:58:07 +0000 (10:58 +0200)]
drm/ssd130x: Change pixel format used to compute the buffer size

The commit e254b584dbc0 ("drm/ssd130x: Remove hardcoded bits-per-pixel in
ssd130x_buf_alloc()") used a pixel format info rather than a hardcoded bpp
to calculate the size of the buffer allocated to store the native pixels.

But it wrongly used the DRM_FORMAT_C1 fourcc pixel format. That is for
color-indexed frame buffer formats, while the ssd103x controllers don't
support different single-channel colors nor a Color Lookup Table (CLUT).

So the correct pixel format to use in this case is DRM_FORMAT_R1 instead.

Since both formats use a eight pixels/byte, there is no functional change
in practice by this patch. Still, the correct pixel format should be used.

Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230713085859.907127-1-javierm@redhat.com
10 months agolibceph: harden msgr2.1 frame segment length checks
Ilya Dryomov [Mon, 10 Jul 2023 18:39:29 +0000 (20:39 +0200)]
libceph: harden msgr2.1 frame segment length checks

ceph_frame_desc::fd_lens is an int array.  decode_preamble() thus
effectively casts u32 -> int but the checks for segment lengths are
written as if on unsigned values.  While reading in HELLO or one of the
AUTH frames (before authentication is completed), arithmetic in
head_onwire_len() can get duped by negative ctrl_len and produce
head_len which is less than CEPH_PREAMBLE_LEN but still positive.
This would lead to a buffer overrun in prepare_read_control() as the
preamble gets copied to the newly allocated buffer of size head_len.

Cc: stable@vger.kernel.org
Fixes: cd1a677cad99 ("libceph, ceph: implement msgr2.1 protocol (crc and secure modes)")
Reported-by: Thelford Williams <thelford@google.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Xiubo Li <xiubli@redhat.com>
10 months agoMerge branch 'net-sched-fixes-for-sch_qfq'
Paolo Abeni [Thu, 13 Jul 2023 09:12:01 +0000 (11:12 +0200)]
Merge branch 'net-sched-fixes-for-sch_qfq'

Pedro Tammela says:

====================
net/sched: fixes for sch_qfq

Patch 1 fixes a regression introduced in 6.4 where the MTU size could be
bigger than 'lmax'.

Patch 3 fixes an issue where the code doesn't account for qdisc_pkt_len()
returning a size bigger then 'lmax'.

Patches 2 and 4 are selftests for the issues above.
====================

Link: https://lore.kernel.org/r/20230711210103.597831-1-pctammela@mojatatu.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agoselftests: tc-testing: add test for qfq with stab overhead
Pedro Tammela [Tue, 11 Jul 2023 21:01:03 +0000 (18:01 -0300)]
selftests: tc-testing: add test for qfq with stab overhead

A packet with stab overhead greater than QFQ_MAX_LMAX should be dropped
by the QFQ qdisc as it can't handle such lengths.

Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Tested-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agonet/sched: sch_qfq: account for stab overhead in qfq_enqueue
Pedro Tammela [Tue, 11 Jul 2023 21:01:02 +0000 (18:01 -0300)]
net/sched: sch_qfq: account for stab overhead in qfq_enqueue

Lion says:
-------
In the QFQ scheduler a similar issue to CVE-2023-31436
persists.

Consider the following code in net/sched/sch_qfq.c:

static int qfq_enqueue(struct sk_buff *skb, struct Qdisc *sch,
                struct sk_buff **to_free)
{
     unsigned int len = qdisc_pkt_len(skb), gso_segs;

    // ...

     if (unlikely(cl->agg->lmax < len)) {
         pr_debug("qfq: increasing maxpkt from %u to %u for class %u",
              cl->agg->lmax, len, cl->common.classid);
         err = qfq_change_agg(sch, cl, cl->agg->class_weight, len);
         if (err) {
             cl->qstats.drops++;
             return qdisc_drop(skb, sch, to_free);
         }

    // ...

     }

Similarly to CVE-2023-31436, "lmax" is increased without any bounds
checks according to the packet length "len". Usually this would not
impose a problem because packet sizes are naturally limited.

This is however not the actual packet length, rather the
"qdisc_pkt_len(skb)" which might apply size transformations according to
"struct qdisc_size_table" as created by "qdisc_get_stab()" in
net/sched/sch_api.c if the TCA_STAB option was set when modifying the qdisc.

A user may choose virtually any size using such a table.

As a result the same issue as in CVE-2023-31436 can occur, allowing heap
out-of-bounds read / writes in the kmalloc-8192 cache.
-------

We can create the issue with the following commands:

tc qdisc add dev $DEV root handle 1: stab mtu 2048 tsize 512 mpu 0 \
overhead 999999999 linklayer ethernet qfq
tc class add dev $DEV parent 1: classid 1:1 htb rate 6mbit burst 15k
tc filter add dev $DEV parent 1: matchall classid 1:1
ping -I $DEV 1.1.1.2

This is caused by incorrectly assuming that qdisc_pkt_len() returns a
length within the QFQ_MIN_LMAX < len < QFQ_MAX_LMAX.

Fixes: 462dbc9101ac ("pkt_sched: QFQ Plus: fair-queueing service at DRR cost")
Reported-by: Lion <nnamrec@gmail.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agoselftests: tc-testing: add tests for qfq mtu sanity check
Pedro Tammela [Tue, 11 Jul 2023 21:01:01 +0000 (18:01 -0300)]
selftests: tc-testing: add tests for qfq mtu sanity check

QFQ only supports a certain bound of MTU size so make sure
we check for this requirement in the tests.

Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Tested-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agonet/sched: sch_qfq: reintroduce lmax bound check for MTU
Pedro Tammela [Tue, 11 Jul 2023 21:01:00 +0000 (18:01 -0300)]
net/sched: sch_qfq: reintroduce lmax bound check for MTU

25369891fcef deletes a check for the case where no 'lmax' is
specified which 3037933448f6 previously fixed as 'lmax'
could be set to the device's MTU without any bound checking
for QFQ_LMAX_MIN and QFQ_LMAX_MAX. Therefore, reintroduce the check.

Fixes: 25369891fcef ("net/sched: sch_qfq: refactor parsing of netlink parameters")
Acked-by: Jamal Hadi Salim <jhs@mojatatu.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
10 months agosh: hd64461: Handle virq offset for offchip IRQ base and HD64461 IRQ
Artur Rojek [Mon, 10 Jul 2023 23:31:32 +0000 (01:31 +0200)]
sh: hd64461: Handle virq offset for offchip IRQ base and HD64461 IRQ

A recent change to start counting SuperH IRQ #s from 16 breaks support
for the Hitachi HD64461 companion chip.

Move the offchip IRQ base and HD64461 IRQ # by 16 in order to
accommodate for the new virq numbering rules.

Fixes: a8ac2961148e ("sh: Avoid using IRQ0 on SH3 and SH4")
Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230710233132.69734-1-contact@artur-rojek.eu
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
10 months agosh: mach-dreamcast: Handle virq offset in cascaded IRQ demux
Geert Uytterhoeven [Sun, 9 Jul 2023 13:10:43 +0000 (15:10 +0200)]
sh: mach-dreamcast: Handle virq offset in cascaded IRQ demux

Take into account the virq offset when translating cascaded interrupts.

Fixes: a8ac2961148e8c72 ("sh: Avoid using IRQ0 on SH3 and SH4")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/7d0cb246c9f1cd24bb1f637ec5cb67e799a4c3b8.1688908227.git.geert+renesas@glider.be
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
10 months agosh: mach-highlander: Handle virq offset in cascaded IRL demux
Geert Uytterhoeven [Sun, 9 Jul 2023 13:10:23 +0000 (15:10 +0200)]
sh: mach-highlander: Handle virq offset in cascaded IRL demux

Take into account the virq offset when translating cascaded IRL
interrupts.

Fixes: a8ac2961148e8c72 ("sh: Avoid using IRQ0 on SH3 and SH4")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/4fcb0d08a2b372431c41e04312742dc9e41e1be4.1688908186.git.geert+renesas@glider.be
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
10 months agosh: mach-r2d: Handle virq offset in cascaded IRL demux
Geert Uytterhoeven [Sun, 9 Jul 2023 11:15:49 +0000 (13:15 +0200)]
sh: mach-r2d: Handle virq offset in cascaded IRL demux

When booting rts7751r2dplus_defconfig on QEMU, the system hangs due to
an interrupt storm on IRQ 20.  IRQ 20 aka event 0x280 is a cascaded IRL
interrupt, which maps to IRQ_VOYAGER, the interrupt used by the Silicon
Motion SM501 multimedia companion chip.  As rts7751r2d_irq_demux() does
not take into account the new virq offset, the interrupt is no longer
translated, leading to an unhandled interrupt.

Fix this by taking into account the virq offset when translating
cascaded IRL interrupts.

Fixes: a8ac2961148e8c72 ("sh: Avoid using IRQ0 on SH3 and SH4")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Closes: https://lore.kernel.org/r/fbfea3ad-d327-4ad5-ac9c-648c7ca3fe1f@roeck-us.net
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/2c99d5df41c40691f6c407b7b6a040d406bc81ac.1688901306.git.geert+renesas@glider.be
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
10 months agosmb: client: fix missed ses refcounting
Paulo Alcantara [Tue, 11 Jul 2023 17:15:10 +0000 (14:15 -0300)]
smb: client: fix missed ses refcounting

Use new cifs_smb_ses_inc_refcount() helper to get an active reference
of @ses and @ses->dfs_root_ses (if set).  This will prevent
@ses->dfs_root_ses of being put in the next call to cifs_put_smb_ses()
and thus potentially causing an use-after-free bug.

Fixes: 8e3554150d6c ("cifs: fix sharing of DFS connections")
Signed-off-by: Paulo Alcantara (SUSE) <pc@manguebit.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
10 months agosmb: client: Fix -Wstringop-overflow issues
Gustavo A. R. Silva [Tue, 11 Jul 2023 23:12:31 +0000 (17:12 -0600)]
smb: client: Fix -Wstringop-overflow issues

pSMB->hdr.Protocol is an array of size 4 bytes, hence when the compiler
analyzes this line of code

parm_data = ((char *) &pSMB->hdr.Protocol) + offset;

it legitimately complains about the fact that offset points outside the
bounds of the array. Notice that the compiler gives priority to the object
as an array, rather than merely the address of one more byte in a structure
to wich offset should be added (which seems to be the actual intention of
the original implementation).

Fix this by explicitly instructing the compiler to treat the code as a
sequence of bytes in struct smb_com_transaction2_spi_req, and not as an
array accessed through pointer notation.

Notice that ((char *)pSMB) + sizeof(pSMB->hdr.smb_buf_length) points to
the same address as ((char *) &pSMB->hdr.Protocol), therefore this results
in no differences in binary output.

Fixes the following -Wstringop-overflow warnings when built s390
architecture with defconfig (GCC 13):
  CC [M]  fs/smb/client/cifssmb.o
In function 'cifs_init_ace',
    inlined from 'posix_acl_to_cifs' at fs/smb/client/cifssmb.c:3046:3,
    inlined from 'cifs_do_set_acl' at fs/smb/client/cifssmb.c:3191:15:
fs/smb/client/cifssmb.c:2987:31: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 2987 |         cifs_ace->cifs_e_perm = local_ace->e_perm;
      |         ~~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
In file included from fs/smb/client/cifssmb.c:27:
fs/smb/client/cifspdu.h: In function 'cifs_do_set_acl':
fs/smb/client/cifspdu.h:384:14: note: at offset [7, 11] into destination object 'Protocol' of size 4
  384 |         __u8 Protocol[4];
      |              ^~~~~~~~
In function 'cifs_init_ace',
    inlined from 'posix_acl_to_cifs' at fs/smb/client/cifssmb.c:3046:3,
    inlined from 'cifs_do_set_acl' at fs/smb/client/cifssmb.c:3191:15:
fs/smb/client/cifssmb.c:2988:30: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
 2988 |         cifs_ace->cifs_e_tag =  local_ace->e_tag;
      |         ~~~~~~~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~
fs/smb/client/cifspdu.h: In function 'cifs_do_set_acl':
fs/smb/client/cifspdu.h:384:14: note: at offset [6, 10] into destination object 'Protocol' of size 4
  384 |         __u8 Protocol[4];
      |              ^~~~~~~~

This helps with the ongoing efforts to globally enable
-Wstringop-overflow.

Link: https://github.com/KSPP/linux/issues/310
Fixes: dc1af4c4b472 ("cifs: implement set acl method")
Cc: stable@vger.kernel.org
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
10 months agoMerge tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf
Jakub Kicinski [Thu, 13 Jul 2023 01:13:57 +0000 (18:13 -0700)]
Merge tag 'for-netdev' of https://git./linux/kernel/git/bpf/bpf

Alexei Starovoitov says:

====================
pull-request: bpf 2023-07-12

We've added 5 non-merge commits during the last 7 day(s) which contain
a total of 7 files changed, 93 insertions(+), 28 deletions(-).

The main changes are:

1) Fix max stack depth check for async callbacks, from Kumar.

2) Fix inconsistent JIT image generation, from Björn.

3) Use trusted arguments in XDP hints kfuncs, from Larysa.

4) Fix memory leak in cpu_map_update_elem, from Pu.

* tag 'for-netdev' of https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf:
  xdp: use trusted arguments in XDP hints kfuncs
  bpf: cpumap: Fix memory leak in cpu_map_update_elem
  riscv, bpf: Fix inconsistent JIT image generation
  selftests/bpf: Add selftest for check_stack_max_depth bug
  bpf: Fix max stack depth check for async callbacks
====================

Link: https://lore.kernel.org/r/20230712223045.40182-1-alexei.starovoitov@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agowifi: cfg80211: fix receiving mesh packets without RFC1042 header
Felix Fietkau [Tue, 11 Jul 2023 11:50:52 +0000 (13:50 +0200)]
wifi: cfg80211: fix receiving mesh packets without RFC1042 header

Fix ethernet header length field after stripping the mesh header

Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/CT5GNZSK28AI.2K6M69OXM9RW5@syracuse/
Fixes: 986e43b19ae9 ("wifi: mac80211: fix receiving A-MSDU frames on mesh interfaces")
Reported-and-tested-by: Nicolas Escande <nico.escande@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20230711115052.68430-1-nbd@nbd.name
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agowifi: rtw89: debug: fix error code in rtw89_debug_priv_send_h2c_set()
Zhang Shurong [Thu, 6 Jul 2023 02:45:00 +0000 (10:45 +0800)]
wifi: rtw89: debug: fix error code in rtw89_debug_priv_send_h2c_set()

If there is a failure during rtw89_fw_h2c_raw() rtw89_debug_priv_send_h2c
should return negative error code instead of a positive value count.
Fix this bug by returning correct error code.

Fixes: e3ec7017f6a2 ("rtw89: add Realtek 802.11ax driver")
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://lore.kernel.org/r/tencent_AD09A61BC4DA92AD1EB0790F5C850E544D07@qq.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agonet: txgbe: fix eeprom calculation error
Jiawen Wu [Tue, 11 Jul 2023 06:34:14 +0000 (14:34 +0800)]
net: txgbe: fix eeprom calculation error

For some device types like TXGBE_ID_XAUI, *checksum computed in
txgbe_calc_eeprom_checksum() is larger than TXGBE_EEPROM_SUM. Remove the
limit on the size of *checksum.

Fixes: 049fe5365324 ("net: txgbe: Add operations to interact with firmware")
Fixes: 5e2ea7801fac ("net: txgbe: Fix unsigned comparison to zero in txgbe_calc_eeprom_checksum()")
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Link: https://lore.kernel.org/r/20230711063414.3311-1-jiawenwu@trustnetic.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agoMerge tag 'for-linus' of https://github.com/openrisc/linux
Linus Torvalds [Wed, 12 Jul 2023 23:28:53 +0000 (16:28 -0700)]
Merge tag 'for-linus' of https://github.com/openrisc/linux

Pull OpenRISC fix from Stafford Horne:

 - During the 6.4 cycle my fpu support work broke ABI compatibility in
   the sigcontext struct. This was noticed by musl libc developers after
   the release. This fix restores the ABI.

* tag 'for-linus' of https://github.com/openrisc/linux:
  openrisc: Union fpcsr and oldmask in sigcontext to unbreak userspace ABI

10 months agotracing/histograms: Add histograms to hist_vars if they have referenced variables
Mohamed Khalfella [Wed, 12 Jul 2023 22:30:21 +0000 (22:30 +0000)]
tracing/histograms: Add histograms to hist_vars if they have referenced variables

Hist triggers can have referenced variables without having direct
variables fields. This can be the case if referenced variables are added
for trigger actions. In this case the newly added references will not
have field variables. Not taking such referenced variables into
consideration can result in a bug where it would be possible to remove
hist trigger with variables being refenced. This will result in a bug
that is easily reproducable like so

$ cd /sys/kernel/tracing
$ echo 'synthetic_sys_enter char[] comm; long id' >> synthetic_events
$ echo 'hist:keys=common_pid.execname,id.syscall:vals=hitcount:comm=common_pid.execname' >> events/raw_syscalls/sys_enter/trigger
$ echo 'hist:keys=common_pid.execname,id.syscall:onmatch(raw_syscalls.sys_enter).synthetic_sys_enter($comm, id)' >> events/raw_syscalls/sys_enter/trigger
$ echo '!hist:keys=common_pid.execname,id.syscall:vals=hitcount:comm=common_pid.execname' >> events/raw_syscalls/sys_enter/trigger

[  100.263533] ==================================================================
[  100.264634] BUG: KASAN: slab-use-after-free in resolve_var_refs+0xc7/0x180
[  100.265520] Read of size 8 at addr ffff88810375d0f0 by task bash/439
[  100.266320]
[  100.266533] CPU: 2 PID: 439 Comm: bash Not tainted 6.5.0-rc1 #4
[  100.267277] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.0-20220807_005459-localhost 04/01/2014
[  100.268561] Call Trace:
[  100.268902]  <TASK>
[  100.269189]  dump_stack_lvl+0x4c/0x70
[  100.269680]  print_report+0xc5/0x600
[  100.270165]  ? resolve_var_refs+0xc7/0x180
[  100.270697]  ? kasan_complete_mode_report_info+0x80/0x1f0
[  100.271389]  ? resolve_var_refs+0xc7/0x180
[  100.271913]  kasan_report+0xbd/0x100
[  100.272380]  ? resolve_var_refs+0xc7/0x180
[  100.272920]  __asan_load8+0x71/0xa0
[  100.273377]  resolve_var_refs+0xc7/0x180
[  100.273888]  event_hist_trigger+0x749/0x860
[  100.274505]  ? kasan_save_stack+0x2a/0x50
[  100.275024]  ? kasan_set_track+0x29/0x40
[  100.275536]  ? __pfx_event_hist_trigger+0x10/0x10
[  100.276138]  ? ksys_write+0xd1/0x170
[  100.276607]  ? do_syscall_64+0x3c/0x90
[  100.277099]  ? entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[  100.277771]  ? destroy_hist_data+0x446/0x470
[  100.278324]  ? event_hist_trigger_parse+0xa6c/0x3860
[  100.278962]  ? __pfx_event_hist_trigger_parse+0x10/0x10
[  100.279627]  ? __kasan_check_write+0x18/0x20
[  100.280177]  ? mutex_unlock+0x85/0xd0
[  100.280660]  ? __pfx_mutex_unlock+0x10/0x10
[  100.281200]  ? kfree+0x7b/0x120
[  100.281619]  ? ____kasan_slab_free+0x15d/0x1d0
[  100.282197]  ? event_trigger_write+0xac/0x100
[  100.282764]  ? __kasan_slab_free+0x16/0x20
[  100.283293]  ? __kmem_cache_free+0x153/0x2f0
[  100.283844]  ? sched_mm_cid_remote_clear+0xb1/0x250
[  100.284550]  ? __pfx_sched_mm_cid_remote_clear+0x10/0x10
[  100.285221]  ? event_trigger_write+0xbc/0x100
[  100.285781]  ? __kasan_check_read+0x15/0x20
[  100.286321]  ? __bitmap_weight+0x66/0xa0
[  100.286833]  ? _find_next_bit+0x46/0xe0
[  100.287334]  ? task_mm_cid_work+0x37f/0x450
[  100.287872]  event_triggers_call+0x84/0x150
[  100.288408]  trace_event_buffer_commit+0x339/0x430
[  100.289073]  ? ring_buffer_event_data+0x3f/0x60
[  100.292189]  trace_event_raw_event_sys_enter+0x8b/0xe0
[  100.295434]  syscall_trace_enter.constprop.0+0x18f/0x1b0
[  100.298653]  syscall_enter_from_user_mode+0x32/0x40
[  100.301808]  do_syscall_64+0x1a/0x90
[  100.304748]  entry_SYSCALL_64_after_hwframe+0x6e/0xd8
[  100.307775] RIP: 0033:0x7f686c75c1cb
[  100.310617] Code: 73 01 c3 48 8b 0d 65 3c 10 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa b8 21 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 35 3c 10 00 f7 d8 64 89 01 48
[  100.317847] RSP: 002b:00007ffc60137a38 EFLAGS: 00000246 ORIG_RAX: 0000000000000021
[  100.321200] RAX: ffffffffffffffda RBX: 000055f566469ea0 RCX: 00007f686c75c1cb
[  100.324631] RDX: 0000000000000001 RSI: 0000000000000001 RDI: 000000000000000a
[  100.328104] RBP: 00007ffc60137ac0 R08: 00007f686c818460 R09: 000000000000000a
[  100.331509] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000009
[  100.334992] R13: 0000000000000007 R14: 000000000000000a R15: 0000000000000007
[  100.338381]  </TASK>

We hit the bug because when second hist trigger has was created
has_hist_vars() returned false because hist trigger did not have
variables. As a result of that save_hist_vars() was not called to add
the trigger to trace_array->hist_vars. Later on when we attempted to
remove the first histogram find_any_var_ref() failed to detect it is
being used because it did not find the second trigger in hist_vars list.

With this change we wait until trigger actions are created so we can take
into consideration if hist trigger has variable references. Also, now we
check the return value of save_hist_vars() and fail trigger creation if
save_hist_vars() fails.

Link: https://lore.kernel.org/linux-trace-kernel/20230712223021.636335-1-mkhalfella@purestorage.com
Cc: stable@vger.kernel.org
Fixes: 067fe038e70f6 ("tracing: Add variable reference handling to hist triggers")
Signed-off-by: Mohamed Khalfella <mkhalfella@purestorage.com>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
10 months agonet/sched: make psched_mtu() RTNL-less safe
Pedro Tammela [Tue, 11 Jul 2023 02:16:34 +0000 (23:16 -0300)]
net/sched: make psched_mtu() RTNL-less safe

Eric Dumazet says[1]:
-------
Speaking of psched_mtu(), I see that net/sched/sch_pie.c is using it
without holding RTNL, so dev->mtu can be changed underneath.
KCSAN could issue a warning.
-------

Annotate dev->mtu with READ_ONCE() so KCSAN don't issue a warning.

[1] https://lore.kernel.org/all/CANn89iJoJO5VtaJ-2=_d2aOQhb0Xw8iBT_Cxqp2HyuS-zj6azw@mail.gmail.com/

v1 -> v2: Fix commit message

Fixes: d4b36210c2e6 ("net: pkt_sched: PIE AQM scheme")
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Pedro Tammela <pctammela@mojatatu.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Link: https://lore.kernel.org/r/20230711021634.561598-1-pctammela@mojatatu.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
10 months agonet: ena: fix shift-out-of-bounds in exponential backoff
Krister Johansen [Tue, 11 Jul 2023 01:36:21 +0000 (18:36 -0700)]
net: ena: fix shift-out-of-bounds in exponential backoff

The ENA adapters on our instances occasionally reset.  Once recently
logged a UBSAN failure to console in the process:

  UBSAN: shift-out-of-bounds in build/linux/drivers/net/ethernet/amazon/ena/ena_com.c:540:13
  shift exponent 32 is too large for 32-bit type 'unsigned int'
  CPU: 28 PID: 70012 Comm: kworker/u72:2 Kdump: loaded not tainted 5.15.117
  Hardware name: Amazon EC2 c5d.9xlarge/, BIOS 1.0 10/16/2017
  Workqueue: ena ena_fw_reset_device [ena]
  Call Trace:
  <TASK>
  dump_stack_lvl+0x4a/0x63
  dump_stack+0x10/0x16
  ubsan_epilogue+0x9/0x36
  __ubsan_handle_shift_out_of_bounds.cold+0x61/0x10e
  ? __const_udelay+0x43/0x50
  ena_delay_exponential_backoff_us.cold+0x16/0x1e [ena]
  wait_for_reset_state+0x54/0xa0 [ena]
  ena_com_dev_reset+0xc8/0x110 [ena]
  ena_down+0x3fe/0x480 [ena]
  ena_destroy_device+0xeb/0xf0 [ena]
  ena_fw_reset_device+0x30/0x50 [ena]
  process_one_work+0x22b/0x3d0
  worker_thread+0x4d/0x3f0
  ? process_one_work+0x3d0/0x3d0
  kthread+0x12a/0x150
  ? set_kthread_struct+0x50/0x50
  ret_from_fork+0x22/0x30
  </TASK>

Apparently, the reset delays are getting so large they can trigger a
UBSAN panic.

Looking at the code, the current timeout is capped at 5000us.  Using a
base value of 100us, the current code will overflow after (1<<29).  Even
at values before 32, this function wraps around, perhaps
unintentionally.

Cap the value of the exponent used for this backoff at (1<<16) which is
larger than currently necessary, but large enough to support bigger
values in the future.

Cc: stable@vger.kernel.org
Fixes: 4bb7f4cf60e3 ("net: ena: reduce driver load time")
Signed-off-by: Krister Johansen <kjlx@templeofstupid.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Shay Agroskin <shayagr@amazon.com>
Link: https://lore.kernel.org/r/20230711013621.GE1926@templeofstupid.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>