1140397 Commits

Author SHA1 Message Date
Zhihao Cheng
cdf7a39bcc dm thin: Fix ABBA deadlock between shrink_slab and dm_pool_abort_metadata
commit 8111964f1b8524c4bb56b02cd9c7a37725ea21fd upstream.

Following concurrent processes:

          P1(drop cache)                P2(kworker)
drop_caches_sysctl_handler
 drop_slab
  shrink_slab
   down_read(&shrinker_rwsem)  - LOCK A
   do_shrink_slab
    super_cache_scan
     prune_icache_sb
      dispose_list
       evict
        ext4_evict_inode
	 ext4_clear_inode
	  ext4_discard_preallocations
	   ext4_mb_load_buddy_gfp
	    ext4_mb_init_cache
	     ext4_read_block_bitmap_nowait
	      ext4_read_bh_nowait
	       submit_bh
	        dm_submit_bio
		                 do_worker
				  process_deferred_bios
				   commit
				    metadata_operation_failed
				     dm_pool_abort_metadata
				      down_write(&pmd->root_lock) - LOCK B
		                      __destroy_persistent_data_objects
				       dm_block_manager_destroy
				        dm_bufio_client_destroy
				         unregister_shrinker
					  down_write(&shrinker_rwsem)
		 thin_map                            |
		  dm_thin_find_block                 ↓
		   down_read(&pmd->root_lock) --> ABBA deadlock

, which triggers hung task:

[   76.974820] INFO: task kworker/u4:3:63 blocked for more than 15 seconds.
[   76.976019]       Not tainted 6.1.0-rc4-00011-g8f17dd350364-dirty #910
[   76.978521] task:kworker/u4:3    state:D stack:0     pid:63    ppid:2
[   76.978534] Workqueue: dm-thin do_worker
[   76.978552] Call Trace:
[   76.978564]  __schedule+0x6ba/0x10f0
[   76.978582]  schedule+0x9d/0x1e0
[   76.978588]  rwsem_down_write_slowpath+0x587/0xdf0
[   76.978600]  down_write+0xec/0x110
[   76.978607]  unregister_shrinker+0x2c/0xf0
[   76.978616]  dm_bufio_client_destroy+0x116/0x3d0
[   76.978625]  dm_block_manager_destroy+0x19/0x40
[   76.978629]  __destroy_persistent_data_objects+0x5e/0x70
[   76.978636]  dm_pool_abort_metadata+0x8e/0x100
[   76.978643]  metadata_operation_failed+0x86/0x110
[   76.978649]  commit+0x6a/0x230
[   76.978655]  do_worker+0xc6e/0xd90
[   76.978702]  process_one_work+0x269/0x630
[   76.978714]  worker_thread+0x266/0x630
[   76.978730]  kthread+0x151/0x1b0
[   76.978772] INFO: task test.sh:2646 blocked for more than 15 seconds.
[   76.979756]       Not tainted 6.1.0-rc4-00011-g8f17dd350364-dirty #910
[   76.982111] task:test.sh         state:D stack:0     pid:2646  ppid:2459
[   76.982128] Call Trace:
[   76.982139]  __schedule+0x6ba/0x10f0
[   76.982155]  schedule+0x9d/0x1e0
[   76.982159]  rwsem_down_read_slowpath+0x4f4/0x910
[   76.982173]  down_read+0x84/0x170
[   76.982177]  dm_thin_find_block+0x4c/0xd0
[   76.982183]  thin_map+0x201/0x3d0
[   76.982188]  __map_bio+0x5b/0x350
[   76.982195]  dm_submit_bio+0x2b6/0x930
[   76.982202]  __submit_bio+0x123/0x2d0
[   76.982209]  submit_bio_noacct_nocheck+0x101/0x3e0
[   76.982222]  submit_bio_noacct+0x389/0x770
[   76.982227]  submit_bio+0x50/0xc0
[   76.982232]  submit_bh_wbc+0x15e/0x230
[   76.982238]  submit_bh+0x14/0x20
[   76.982241]  ext4_read_bh_nowait+0xc5/0x130
[   76.982247]  ext4_read_block_bitmap_nowait+0x340/0xc60
[   76.982254]  ext4_mb_init_cache+0x1ce/0xdc0
[   76.982259]  ext4_mb_load_buddy_gfp+0x987/0xfa0
[   76.982263]  ext4_discard_preallocations+0x45d/0x830
[   76.982274]  ext4_clear_inode+0x48/0xf0
[   76.982280]  ext4_evict_inode+0xcf/0xc70
[   76.982285]  evict+0x119/0x2b0
[   76.982290]  dispose_list+0x43/0xa0
[   76.982294]  prune_icache_sb+0x64/0x90
[   76.982298]  super_cache_scan+0x155/0x210
[   76.982303]  do_shrink_slab+0x19e/0x4e0
[   76.982310]  shrink_slab+0x2bd/0x450
[   76.982317]  drop_slab+0xcc/0x1a0
[   76.982323]  drop_caches_sysctl_handler+0xb7/0xe0
[   76.982327]  proc_sys_call_handler+0x1bc/0x300
[   76.982331]  proc_sys_write+0x17/0x20
[   76.982334]  vfs_write+0x3d3/0x570
[   76.982342]  ksys_write+0x73/0x160
[   76.982347]  __x64_sys_write+0x1e/0x30
[   76.982352]  do_syscall_64+0x35/0x80
[   76.982357]  entry_SYSCALL_64_after_hwframe+0x63/0xcd

Function metadata_operation_failed() is called when operations failed
on dm pool metadata, dm pool will destroy and recreate metadata. So,
shrinker will be unregistered and registered, which could down write
shrinker_rwsem under pmd_write_lock.

Fix it by allocating dm_block_manager before locking pmd->root_lock
and destroying old dm_block_manager after unlocking pmd->root_lock,
then old dm_block_manager is replaced with new dm_block_manager under
pmd->root_lock. So, shrinker register/unregister could be done without
holding pmd->root_lock.

Fetch a reproducer in [Link].

Link: https://bugzilla.kernel.org/show_bug.cgi?id=216676
Cc: stable@vger.kernel.org #v5.2+
Fixes: e49e582965b3 ("dm thin: add read only and fail io modes")
Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:45 +01:00
Mike Snitzer
f74b7c5a85 dm cache: Fix ABBA deadlock between shrink_slab and dm_cache_metadata_abort
commit 352b837a5541690d4f843819028cf2b8be83d424 upstream.

Same ABBA deadlock pattern fixed in commit 4b60f452ec51 ("dm thin: Fix
ABBA deadlock between shrink_slab and dm_pool_abort_metadata") to
DM-cache's metadata.

Reported-by: Zhihao Cheng <chengzhihao1@huawei.com>
Cc: stable@vger.kernel.org
Fixes: 028ae9f76f29 ("dm cache: add fail io mode and needs_check flag")
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:44 +01:00
Matthieu Baerts
1922ea6b0a mptcp: use proper req destructor for IPv6
commit d3295fee3c756ece33ac0d935e172e68c0a4161b upstream.

Before, only the destructor from TCP request sock in IPv4 was called
even if the subflow was IPv6.

It is important to use the right destructor to avoid memory leaks with
some advanced IPv6 features, e.g. when the request socks contain
specific IPv6 options.

Fixes: 79c0949e9a09 ("mptcp: Add key generation and token tree")
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:44 +01:00
Matthieu Baerts
d3901b9004 mptcp: dedicated request sock for subflow in v6
commit 34b21d1ddc8ace77a8fa35c1b1e06377209e0dae upstream.

tcp_request_sock_ops structure is specific to IPv4. It should then not
be used with MPTCP subflows on top of IPv6.

For example, it contains the 'family' field, initialised to AF_INET.
This 'family' field is used by TCP FastOpen code to generate the cookie
but also by TCP Metrics, SELinux and SYN Cookies. Using the wrong family
will not lead to crashes but displaying/using/checking wrong things.

Note that 'send_reset' callback from request_sock_ops structure is used
in some error paths. It is then also important to use the correct one
for IPv4 or IPv6.

The slab name can also be different in IPv4 and IPv6, it will be used
when printing some log messages. The slab pointer will anyway be the
same because the object size is the same for both v4 and v6. A
BUILD_BUG_ON() has also been added to make sure this size is the same.

Fixes: cec37a6e41aa ("mptcp: Handle MP_CAPABLE options for outgoing connections")
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:44 +01:00
Matthieu Baerts
01a3015206 mptcp: remove MPTCP 'ifdef' in TCP SYN cookies
commit 3fff88186f047627bb128d65155f42517f8e448f upstream.

To ease the maintenance, it is often recommended to avoid having #ifdef
preprocessor conditions.

Here the section related to CONFIG_MPTCP was quite short but the next
commit needs to add more code around. It is then cleaner to move
specific MPTCP code to functions located in net/mptcp directory.

Now that mptcp_subflow_request_sock_ops structure can be static, it can
also be marked as "read only after init".

Suggested-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Cc: stable@vger.kernel.org
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:44 +01:00
Wei Yongjun
993aad51b6 mptcp: netlink: fix some error return code
commit e0fe1123ab2b07d2cd5475660bd0b4e6993ffaa7 upstream.

Fix to return negative error code -EINVAL from some error handling
case instead of 0, as done elsewhere in those functions.

Fixes: 9ab4807c84a4 ("mptcp: netlink: Add MPTCP_PM_CMD_ANNOUNCE")
Fixes: 702c2f646d42 ("mptcp: netlink: allow userspace-driven subflow establishment")
Cc: stable@vger.kernel.org
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:44 +01:00
Alexander Aring
5a52012ff8 fs: dlm: retry accept() until -EAGAIN or error returns
commit f0f4bb431bd543ed7bebbaea3ce326cfcd5388bc upstream.

This patch fixes a race if we get two times an socket data ready event
while the listen connection worker is queued. Currently it will be
served only once but we need to do it (in this case twice) until we hit
-EAGAIN which tells us there is no pending accept going on.

This patch wraps an do while loop until we receive a return value which
is different than 0 as it was done before commit d11ccd451b65 ("fs: dlm:
listen socket out of connection hash").

Cc: stable@vger.kernel.org
Fixes: d11ccd451b65 ("fs: dlm: listen socket out of connection hash")
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:44 +01:00
Alexander Aring
9e72fec62f fs: dlm: fix sock release if listen fails
commit 08ae0547e75ec3d062b6b6b9cf4830c730df68df upstream.

This patch fixes a double sock_release() call when the listen() is
called for the dlm lowcomms listen socket. The caller of
dlm_listen_for_all should never care about releasing the socket if
dlm_listen_for_all() fails, it's done now only once if listen() fails.

Cc: stable@vger.kernel.org
Fixes: 2dc6b1158c28 ("fs: dlm: introduce generic listen")
Signed-off-by: Alexander Aring <aahringo@redhat.com>
Signed-off-by: David Teigland <teigland@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:44 +01:00
Jaroslav Kysela
bb641476f5 ALSA: usb-audio: Add new quirk FIXED_RATE for JBL Quantum810 Wireless
[ Upstream commit fd28941cff1cd9d8ffa59fe11eb64148e09b6ed6 ]

It seems that the firmware is broken and does not accept
the UAC_EP_CS_ATTR_SAMPLE_RATE URB. There is only one rate (48000Hz)
available in the descriptors for the output endpoint.

Create a new quirk QUIRK_FLAG_FIXED_RATE to skip the rate setup
when only one rate is available (fixed).

BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=216798
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
Link: https://lore.kernel.org/r/20221215153037.1163786-1-perex@perex.cz
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:43 +01:00
José Expósito
9e456d460f HID: Ignore HP Envy x360 eu0009nv stylus battery
[ Upstream commit cec827d658dd5c287ea8925737d45f0a60e47422 ]

Battery status is reported for the HP Envy x360 eu0009nv stylus even
though it does not have battery.

Prevent it from always reporting the battery as low (1%).

Link: https://gitlab.freedesktop.org/libinput/libinput/-/issues/823
Reported-by: Ioannis Iliopoulos <jxftw2424@gmail.com>
Tested-by: Ioannis Iliopoulos <jxftw2424@gmail.com>
Signed-off-by: José Expósito <jose.exposito89@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:43 +01:00
Hans de Goede
ca4c62ec48 platform/x86: x86-android-tablets: Add Advantech MICA-071 extra button
[ Upstream commit b03ae77e7e057f4b3b858f10c840557e71448a91 ]

The Advantech MICA-071 is a standard Windows tablet, but it has an extra
"quick launch" button which is not described in the ACPI tables in anyway.

Use the x86-android-tablets infra to create a gpio-button device for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20221127221928.123660-1-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:43 +01:00
Hans de Goede
c693355b97 platform/x86: x86-android-tablets: Add Lenovo Yoga Tab 3 (YT3-X90F) charger + fuel-gauge data
[ Upstream commit b6c14ff1deaafd30036ec36d5205acd5a578b1cd ]

The Lenovo Yoga Tab 3 (YT3-X90F) is an Intel Cherry Trail based tablet
which ships with Android as Factory OS. Its DSDT contains a bunch of I2C
devices which are not actually there, causing various resource conflicts.
Use acpi_quirk_skip_i2c_client_enumeration() to not enumerate these.

The YT3-X90F has quite a bit of exotic hardware, this adds initial
support by manually instantiating the i2c-clients for the 2 charger +
2 fuel-gauge chips used for the 2 batteries.

Support for other parts of the hw will be added by follow-up patches.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Link: https://lore.kernel.org/r/20221127182458.104528-1-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:43 +01:00
Hans de Goede
5a2798eda1 platform/x86: x86-android-tablets: Add Medion Lifetab S10346 data
[ Upstream commit 902ce18ab1f4444ff9d49865bea35a07adcc03fd ]

The Medion Lifetab S10346 is a x86 ACPI tablet which ships with Android
x86 as factory OS. Its DSDT contains a bunch of I2C devices which are not
actually there, causing various resource conflicts. Enumeration of these
is skipped through the acpi_quirk_skip_i2c_client_enumeration().

Add support for manually instantiating the I2C devices which are
actually present on this tablet by adding the necessary device info to
the x86-android-tablets module.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20221208110224.107354-1-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:43 +01:00
Vitaly Rodionov
838e48fa1b ALSA: hda/cirrus: Add extra 10 ms delay to allow PLL settle and lock.
[ Upstream commit 9fb9fa18fb50d1a33a1bd947681fce96fc2c8db6 ]

New HW platforms with multiple CS42L42 parts, faster CPU and i2c
requre some extra delay to allow PLL to settle and lock. Adding
extra 10ms delay.

Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20221205145713.23852-1-vitalyr@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:43 +01:00
Artem Bityutskiy
c455aa7cc9 platform/x86: intel-uncore-freq: add Emerald Rapids support
[ Upstream commit 9c252ecf30360cb7b4dbcc275aebe5642174fd39 ]

Make Intel uncore frequency driver support Emerald Rapids by adding its
CPU model to the match table.

Emerald Rapids uncore frequency control is the same as in Sapphire
Rapids.

Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Acked-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:43 +01:00
Hans de Goede
009ac0049d platform/x86: ideapad-laptop: Stop writing VPCCMD_W_TOUCHPAD at probe time
[ Upstream commit a10ba160d427e78ffa2ab15a86cacaec291fa58a ]

Commit d69cd7eea93e ("platform/x86: ideapad-laptop: Disable touchpad_switch
for ELAN0634") from Janary 2021 added a flag hiding the touchpad sysfs-attr
and disabling ideapad_sync_touchpad_state() because some devices
"do not use EC to switch touchpad".

At the same time this added a write(VPCCMD_W_TOUCHPAD, 1) call at probe
time on these same devices. This seems to be copied from the rfkill code
which does something similar when hw rfkill support is disabled.

But for the rfkill code this is known to be necessary on some models,
where as for the touchpad control no motivation is given for doing this
and prior to this patch there were no reports of needing to do this.

So this seems unnecessary; and it is best to avoid poking the hardware
unnecessary to avoid unwanted side effects, so remove this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://lore.kernel.org/r/20221117110244.67811-6-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:43 +01:00
Hans de Goede
bda3399b5a platform/x86: ideapad-laptop: Send KEY_TOUCHPAD_TOGGLE on some models
[ Upstream commit 5829f8a897e4f030cd2d32a930eea8954ab5dcd3 ]

On recent Ideapad models the EC does not control the touchpad at all,
so instead of sending KEY_TOUCHPAD_ON/ _OFF on touchpad toggle hotkey
events, ideapad-laptop should send KEY_TOUCHPAD_TOGGLE and let userspace
handle the toggling.

Check for this by checking if the value read from VPCCMD_R_TOUCHPAD
actually changes when receiving a touchpad-toggle hotkey event; and
if it does not change send KEY_TOUCHPAD_TOGGLE to userspace to let
userspace enable/disable the touchpad in software.

Note this also drops the priv->features.touchpad_ctrl_via_ec check from
ideapad_sync_touchpad_state() so that KEY_TOUCHPAD_TOGGLE will be send
on laptops where this is not set too. This can be safely dropped now
because the i8042_command(I8042_CMD_AUX_ENABLE/_DISABLE) call is now
guarded by its own feature flag.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://lore.kernel.org/r/20221117110244.67811-5-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:42 +01:00
Hans de Goede
f5820b4139 platform/x86: ideapad-laptop: Only toggle ps2 aux port on/off on select models
[ Upstream commit c69e7d843d2c34b80b8731a5dc57c34ea04a3edf ]

Recently there have been multiple patches to disable the ideapad-laptop's
touchpad control code, because it is causing issues on various laptops:

Commit d69cd7eea93e ("platform/x86: ideapad-laptop: Disable touchpad_switch for ELAN0634")
Commit a231224a601c ("platform/x86: ideapad-laptop: Disable touchpad_switch")

The turning on/off of the ps2 aux port was added specifically for
the IdeaPad Z570, where the EC does toggle the touchpad on/off LED and
toggles the value returned by reading VPCCMD_R_TOUCHPAD, but it does not
actually turn on/off the touchpad.

The ideapad-laptop code really should not be messing with the i8042
controller on all devices just for this special case.

Add a new ctrl_ps2_aux_port flag set based on a DMI based allow-list
for devices which need this workaround, populating it with just
the Ideapad Z570 for now.

This also adds a module parameter so that this behavior can easily
be enabled on other models which may need it.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://lore.kernel.org/r/20221117110244.67811-4-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:42 +01:00
Hans de Goede
2380e94935 platform/x86: ideapad-laptop: Do not send KEY_TOUCHPAD* events on probe / resume
[ Upstream commit f4dd8c44bb831ff885680bc77111fa39c193a93f ]

The sending of KEY_TOUCHPAD* events is causing spurious touchpad OSD
showing on resume.

Disable the sending of events on probe / resume to fix this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://lore.kernel.org/r/20221117110244.67811-3-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:42 +01:00
Hans de Goede
c234ccc68a platform/x86: ideapad-laptop: Refactor ideapad_sync_touchpad_state()
[ Upstream commit 289a59895e7a380cdc7fe2780d3073f4b9237020 ]

Add an error exit for read_ec_data() failing instead of putting the main
body in an if (success) block.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Jiaxun Yang <jiaxun.yang@flygoat.com>
Tested-by: Maxim Mikityanskiy <maxtram95@gmail.com>
Link: https://lore.kernel.org/r/20221117110244.67811-2-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:42 +01:00
Hans de Goede
8af3d02aae ACPI: video: Prefer native over vendor
[ Upstream commit fb1836c91317e0770950260dfa91eb9b2170cb27 ]

When available prefer native backlight control over vendor backlight
control.

Testing has shown that there are quite a few laptop models which rely
on native backlight control (they don't have ACPI video bus backlight
control) and on which acpi_osi_is_win8() returns false.

Currently __acpi_video_get_backlight_type() returns vendor on these
laptops, leading to an empty /sys/class/backlight.

As a workaround for this acpi_video_backlight_use_native() has been
temporarily changed to always return true.

This re-introduces the problem of having multiple backlight
devices under /sys/class/backlight for a single panel.

Change __acpi_video_get_backlight_type() to prefer native over vendor
when available. So that it returns native on these models.

And change acpi_video_backlight_use_native() back to only return
true when __acpi_video_get_backlight_type() returns native.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:42 +01:00
Hans de Goede
923c1922bd ACPI: video: Simplify __acpi_video_get_backlight_type()
[ Upstream commit a5df42521f328b45c9d89c13740e747be08ac66e ]

Simplify __acpi_video_get_backlight_type() removing a nested if which
makes the flow harder to follow.

This also results in having only 1 exit point with
return acpi_backlight_native instead of 2.

Note this drops the (video_caps & ACPI_VIDEO_BACKLIGHT) check from
the if (acpi_osi_is_win8() && native_available) return native path.
Windows 8's hardware certification requirements include that there must
be ACPI video bus backlight control, so the ACPI_VIDEO_BACKLIGHT check
is redundant.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:42 +01:00
Philipp Jungkamp
33c25c3146 platform/x86: ideapad-laptop: support for more special keys in WMI
[ Upstream commit f32e02417614d3588a3954dab2a70320c43d1010 ]

The event data of the WMI event 0xD0, which is assumed to be the
fn_lock, is used to indicate several special keys on newer Yoga 7/9
laptops.

The notify_id 0xD0 is non-unique in the DSDT of the Yoga 9 14IAP7, this
causes wmi_get_event_data() to report wrong values.
Port the ideapad-laptop WMI code to the wmi bus infrastructure which
does not suffer from the shortcomings of wmi_get_event_data().

Signed-off-by: Philipp Jungkamp <p.jungkamp@gmx.net>
Link: https://lore.kernel.org/r/20221116110647.3438-1-p.jungkamp@gmx.net
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:42 +01:00
Eray Orçunus
32755a5da1 platform/x86: ideapad-laptop: Add new _CFG bit numbers for future use
[ Upstream commit be5dd7d8359de9fb22115a63f09981cdf689db4f ]

Later IdeaPads report various things in last 8 bits of _CFG, at least
5 of them represent supported on-screen-displays. Add those bit numbers
to the enum, and use CFG_OSD_ as prefix of their names. Also expose
the values of these bits to debugfs, since they can be useful.

Signed-off-by: Eray Orçunus <erayorcunus@gmail.com>
Acked-by: Ike Panhc <ike.pan@canonical.com>
Link: https://lore.kernel.org/r/20221029120311.11152-5-erayorcunus@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:41 +01:00
Eray Orçunus
317499df9d platform/x86: ideapad-laptop: Revert "check for touchpad support in _CFG"
[ Upstream commit 5831882880e9a1749553e78f9d8369fe33116aaf ]

Last 8 bit of _CFG started being used in later IdeaPads, thus 30th bit
doesn't always show whether device supports touchpad or touchpad switch.
Remove checking bit 30 of _CFG, so older IdeaPads like S10-3 can switch
touchpad again via touchpad attribute.

This reverts commit b3ed1b7fe378 ("platform/x86: ideapad-laptop: check for
touchpad support in _CFG").

Signed-off-by: Eray Orçunus <erayorcunus@gmail.com>
Acked-by: Ike Panhc <ike.pan@canonical.com>
Link: https://lore.kernel.org/r/20221029120311.11152-2-erayorcunus@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:41 +01:00
Hans de Goede
f48a74ccb5 platform/x86: thinkpad_acpi: Fix max_brightness of thinklight
[ Upstream commit db5e2a4ca0a7a5fe54f410590292ea2e91de6798 ]

Thinklight has only two values, on/off so it's reasonable for
max_brightness to be 0 and 1 as if you write anything between 0 and 255
it will be 255 anyway so there's no point for it to be 255.

This may look like it is a userspace API change, but writes with
a value larget then the new max_brightness will still be accepted,
these will be silently clamped to the new max_brightness by
led_set_brightness_nosleep(). So no userspace API problems are
expected.

Reported-by: Michał Szczepaniak <m.szczepaniak.000@gmail.com>
Link: https://lore.kernel.org/platform-driver-x86/55400326-e64f-5444-94e5-22b8214d00b6@gmail.com/
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:41 +01:00
Chris Chiu
3ff594fb49 ALSA: hda/realtek: Apply dual codec fixup for Dell Latitude laptops
[ Upstream commit a4517c4f3423c7c448f2c359218f97c1173523a1 ]

The Dell Latiture 3340/3440/3540 laptops with Realtek ALC3204 have
dual codecs and need the ALC1220_FIXUP_GB_DUAL_CODECS to fix the
conflicts of Master controls. The existing headset mic fixup for
Dell is also required to enable the jack sense and the headset mic.

Introduce a new fixup to fix the dual codec and headset mic issues
for particular Dell laptops since other old Dell laptops with the
same codec configuration are already well handled by the fixup in
alc269_fallback_pin_fixup_tbl[].

Signed-off-by: Chris Chiu <chris.chiu@canonical.com>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221226114303.4027500-1-chris.chiu@canonical.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:41 +01:00
Philipp Jungkamp
ed32831a17 ALSA: patch_realtek: Fix Dell Inspiron Plus 16
[ Upstream commit 2912cdda734d9136615ed05636d9fcbca2a7a3c5 ]

The Dell Inspiron Plus 16, in both laptop and 2in1 form factor, has top
speakers connected on NID 0x17, which the codec reports as unconnected.
These speakers should be connected to the DAC on NID 0x03.

Signed-off-by: Philipp Jungkamp <p.jungkamp@gmx.net>
Link: https://lore.kernel.org/r/20221205163713.7476-1-p.jungkamp@gmx.net
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Stable-dep-of: a4517c4f3423 ("ALSA: hda/realtek: Apply dual codec fixup for Dell Latitude laptops")
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:41 +01:00
Toke Høiland-Jørgensen
7ac7830af6 bpf: Resolve fext program type when checking map compatibility
[ Upstream commit 1c123c567fb138ebd187480b7fc0610fcb0851f5 ]

The bpf_prog_map_compatible() check makes sure that BPF program types are
not mixed inside BPF map types that can contain programs (tail call maps,
cpumaps and devmaps). It does this by setting the fields of the map->owner
struct to the values of the first program being checked against, and
rejecting any subsequent programs if the values don't match.

One of the values being set in the map owner struct is the program type,
and since the code did not resolve the prog type for fext programs, the map
owner type would be set to PROG_TYPE_EXT and subsequent loading of programs
of the target type into the map would fail.

This bug is seen in particular for XDP programs that are loaded as
PROG_TYPE_EXT using libxdp; these cannot insert programs into devmaps and
cpumaps because the check fails as described above.

Fix the bug by resolving the fext program type to its target program type
as elsewhere in the verifier.

v3:
- Add Yonghong's ACK

Fixes: f45d5b6ce2e8 ("bpf: generalise tail call map compatibility check")
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
Link: https://lore.kernel.org/r/20221214230254.790066-1-toke@redhat.com
Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-01-07 11:11:41 +01:00
Smitha T Murthy
f845a9d33b media: s5p-mfc: Fix in register read and write for H264
commit 06710cd5d2436135046898d7e4b9408c8bb99446 upstream.

Few of the H264 encoder registers written were not getting reflected
since the read values were not stored and getting overwritten.

Fixes: 6a9c6f681257 ("[media] s5p-mfc: Add variants to access mfc registers")

Cc: stable@vger.kernel.org
Cc: linux-fsd@tesla.com
Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:41 +01:00
Smitha T Murthy
bd1b72f0c3 media: s5p-mfc: Clear workbit to handle error condition
commit d3f3c2fe54e30b0636496d842ffbb5ad3a547f9b upstream.

During error on CLOSE_INSTANCE command, ctx_work_bits was not getting
cleared. During consequent mfc execution NULL pointer dereferencing of
this context led to kernel panic. This patch fixes this issue by making
sure to clear ctx_work_bits always.

Fixes: 818cd91ab8c6 ("[media] s5p-mfc: Extract open/close MFC instance commands")
Cc: stable@vger.kernel.org
Cc: linux-fsd@tesla.com
Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:40 +01:00
Smitha T Murthy
bff2698aab media: s5p-mfc: Fix to handle reference queue during finishing
commit d8a46bc4e1e0446459daa77c4ce14218d32dacf9 upstream.

On receiving last buffer driver puts MFC to MFCINST_FINISHING state which
in turn skips transferring of frame from SRC to REF queue. This causes
driver to stop MFC encoding and last frame is lost.

This patch guarantees safe handling of frames during MFCINST_FINISHING and
correct clearing of workbit to avoid early stopping of encoding.

Fixes: af9357467810 ("[media] MFC: Add MFC 5.1 V4L2 driver")

Cc: stable@vger.kernel.org
Cc: linux-fsd@tesla.com
Signed-off-by: Smitha T Murthy <smitha.t@samsung.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:40 +01:00
Al Viro
67ffc6dc30 ext2: unbugger ext2_empty_dir()
commit 27e714c007e4ad01837bf0fac5c11913a38d7695 upstream.

In 27cfa258951a "ext2: fix fs corruption when trying to remove
a non-empty directory with IO error" a funny thing has happened:

-               page = ext2_get_page(inode, i, dir_has_error, &page_addr);
+               page = ext2_get_page(inode, i, 0, &page_addr);

 -               if (IS_ERR(page)) {
 -                       dir_has_error = 1;
 -                       continue;
 -               }
 +               if (IS_ERR(page))
 +                       goto not_empty;

And at not_empty: we hit ext2_put_page(page, page_addr), which does
put_page(page).  Which, unless I'm very mistaken, should oops
immediately when given ERR_PTR(-E...) as page.

OK, shit happens, insufficiently tested patches included.  But when
commit in question describes the fault-injection test that exercised
that particular failure exit...

Ow.

CC: stable@vger.kernel.org
Fixes: 27cfa258951a ("ext2: fix fs corruption when trying to remove a non-empty directory with IO error")
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:40 +01:00
Yongqiang Liu
e7c0c943ed cpufreq: Init completion before kobject_init_and_add()
commit 5c51054896bcce1d33d39fead2af73fec24f40b6 upstream.

In cpufreq_policy_alloc(), it will call uninitialed completion in
cpufreq_sysfs_release() when kobject_init_and_add() fails. And
that will cause a crash such as the following page fault in complete:

BUG: unable to handle page fault for address: fffffffffffffff8
[..]
RIP: 0010:complete+0x98/0x1f0
[..]
Call Trace:
 kobject_put+0x1be/0x4c0
 cpufreq_online.cold+0xee/0x1fd
 cpufreq_add_dev+0x183/0x1e0
 subsys_interface_register+0x3f5/0x4e0
 cpufreq_register_driver+0x3b7/0x670
 acpi_cpufreq_init+0x56c/0x1000 [acpi_cpufreq]
 do_one_initcall+0x13d/0x780
 do_init_module+0x1c3/0x630
 load_module+0x6e67/0x73b0
 __do_sys_finit_module+0x181/0x240
 do_syscall_64+0x35/0x80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

Fixes: 4ebe36c94aed ("cpufreq: Fix kobject memleak")
Signed-off-by: Yongqiang Liu <liuyongqiang13@huawei.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: 5.2+ <stable@vger.kernel.org> # 5.2+
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:40 +01:00
Kant Fan
5052a96b21 PM/devfreq: governor: Add a private governor_data for governor
commit 5fdded8448924e3631d466eea499b11606c43640 upstream.

The member void *data in the structure devfreq can be overwrite
by governor_userspace. For example:
1. The device driver assigned the devfreq governor to simple_ondemand
by the function devfreq_add_device() and init the devfreq member
void *data to a pointer of a static structure devfreq_simple_ondemand_data
by the function devfreq_add_device().
2. The user changed the devfreq governor to userspace by the command
"echo userspace > /sys/class/devfreq/.../governor".
3. The governor userspace alloced a dynamic memory for the struct
userspace_data and assigend the member void *data of devfreq to
this memory by the function userspace_init().
4. The user changed the devfreq governor back to simple_ondemand
by the command "echo simple_ondemand > /sys/class/devfreq/.../governor".
5. The governor userspace exited and assigned the member void *data
in the structure devfreq to NULL by the function userspace_exit().
6. The governor simple_ondemand fetched the static information of
devfreq_simple_ondemand_data in the function
devfreq_simple_ondemand_func() but the member void *data of devfreq was
assigned to NULL by the function userspace_exit().
7. The information of upthreshold and downdifferential is lost
and the governor simple_ondemand can't work correctly.

The member void *data in the structure devfreq is designed for
a static pointer used in a governor and inited by the function
devfreq_add_device(). This patch add an element named governor_data
in the devfreq structure which can be used by a governor(E.g userspace)
who want to assign a private data to do some private things.

Fixes: ce26c5bb9569 ("PM / devfreq: Add basic governors")
Cc: stable@vger.kernel.org # 5.10+
Reviewed-by: Chanwoo Choi <cwchoi00@gmail.com>
Acked-by: MyungJoo Ham <myungjoo.ham@samsung.com>
Signed-off-by: Kant Fan <kant@allwinnertech.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:40 +01:00
Jason A. Donenfeld
6088d8783f random: add helpers for random numbers with given floor or range
commit 7f576b2593a978451416424e75f69ad1e3ae4efe upstream.

Now that we have get_random_u32_below(), it's nearly trivial to make
inline helpers to compute get_random_u32_above() and
get_random_u32_inclusive(), which will help clean up open coded loops
and manual computations throughout the tree.

One snag is that in order to make get_random_u32_inclusive() operate on
closed intervals, we have to do some (unlikely) special case handling if
get_random_u32_inclusive(0, U32_MAX) is called. The least expensive way
of doing this is actually to adjust the slowpath of
get_random_u32_below() to have its undefined 0 result just return the
output of get_random_u32(). We can make this basically free by calling
get_random_u32() before the branch, so that the branch latency gets
interleaved.

Cc: stable@vger.kernel.org # to ease future backports that use this api
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:40 +01:00
Yazen Ghannam
ef3ad7f447 x86/MCE/AMD: Clear DFR errors found in THR handler
commit bc1b705b0eee4c645ad8b3bbff3c8a66e9688362 upstream.

AMD's MCA Thresholding feature counts errors of all severity levels, not
just correctable errors. If a deferred error causes the threshold limit
to be reached (it was the error that caused the overflow), then both a
deferred error interrupt and a thresholding interrupt will be triggered.

The order of the interrupts is not guaranteed. If the threshold
interrupt handler is executed first, then it will clear MCA_STATUS for
the error. It will not check or clear MCA_DESTAT which also holds a copy
of the deferred error. When the deferred error interrupt handler runs it
will not find an error in MCA_STATUS, but it will find the error in
MCA_DESTAT. This will cause two errors to be logged.

Check for deferred errors when handling a threshold interrupt. If a bank
contains a deferred error, then clear the bank's MCA_DESTAT register.

Define a new helper function to do the deferred error check and clearing
of MCA_DESTAT.

  [ bp: Simplify, convert comment to passive voice. ]

Fixes: 37d43acfd79f ("x86/mce/AMD: Redo error logging from APIC LVT interrupt handlers")
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220621155943.33623-1-yazen.ghannam@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:40 +01:00
Mickaël Salaün
9edfbb64ca selftests: Use optional USERCFLAGS and USERLDFLAGS
commit de3ee3f63400a23954e7c1ad1cb8c20f29ab6fe3 upstream.

This change enables to extend CFLAGS and LDFLAGS from command line, e.g.
to extend compiler checks: make USERCFLAGS=-Werror USERLDFLAGS=-static

USERCFLAGS and USERLDFLAGS are documented in
Documentation/kbuild/makefiles.rst and Documentation/kbuild/kbuild.rst

This should be backported (down to 5.10) to improve previous kernel
versions testing as well.

Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Link: https://lore.kernel.org/r/20220909103901.1503436-1-mic@digikod.net
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:39 +01:00
Yazen Ghannam
ea27cc3245 EDAC/mc_sysfs: Increase legacy channel support to 12
commit 25836ce1df827cb4830291cb2325067efb46753a upstream.

Newer AMD systems, such as Genoa, can support up to 12 channels per EDAC
"mc" device. These are detected by the device's EDAC module, and the
current EDAC interface is properly enumerated. However, the legacy EDAC
sysfs interface provides device attributes only for channels 0 to 7.
Therefore, channels 8 to 11 will not be visible in the legacy interface.
This was overlooked in the initial support for AMD Genoa.

Add additional device attributes so that up to 12 channels are visible
in the legacy EDAC sysfs interface.

Fixes: e2be5955a886 ("EDAC/amd64: Add support for AMD Family 19h Models 10h-1Fh and A0h-AFh")
Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20221018153630.14664-1-yazen.ghannam@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:39 +01:00
Dan Williams
b8b9b0b857 cxl/region: Fix missing probe failure
commit bf3e5da8cb43a671b32fc125fa81b8f6a3677192 upstream.

cxl_region_probe() allows for regions not in the 'commit' state to be
enabled. Fail probe when the region is not committed otherwise the
kernel may indicate that an address range is active when none of the
decoders are active.

Fixes: 8d48817df6ac ("cxl/region: Add region driver boiler plate")
Cc: <stable@vger.kernel.org>
Reviewed-by: Davidlohr Bueso <dave@stgolabs.net>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Link: https://lore.kernel.org/r/166993220462.1995348.1698008475198427361.stgit@dwillia2-xfh.jf.intel.com
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:39 +01:00
Krzysztof Kozlowski
833cdf903d arm64: dts: qcom: sdm850-lenovo-yoga-c630: correct I2C12 pins drive strength
commit fd49776d8f458bba5499384131eddc0b8bcaf50c upstream.

The pin configuration (done with generic pin controller helpers and
as expressed by bindings) requires children nodes with either:
1. "pins" property and the actual configuration,
2. another set of nodes with above point.

The qup_i2c12_default pin configuration used second method - with a
"pinmux" child.

Fixes: 44acee207844 ("arm64: dts: qcom: Add Lenovo Yoga C630")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Tested-by: Steev Klimaszewski <steev@kali.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220930192039.240486-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:39 +01:00
Andrew Cooper
38f99d0b02 x86/fpu/xstate: Fix XSTATE_WARN_ON() to emit relevant diagnostics
commit 48280042f2c6e3ac2cfb1d8b752ab4a7e0baea24 upstream.

"XSAVE consistency problem" has been reported under Xen, but that's the extent
of my divination skills.

Modify XSTATE_WARN_ON() to force the caller to provide relevant diagnostic
information, and modify each caller suitably.

For check_xstate_against_struct(), this removes a double WARN() where one will
do perfectly fine.

CC stable as this has been wonky debugging for 7 years and it is good to
have there too.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: <stable@vger.kernel.org>
Link: https://lore.kernel.org/r/20220810221909.12768-1-andrew.cooper3@citrix.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:39 +01:00
Jason A. Donenfeld
346ac4a116 random: use rejection sampling for uniform bounded random integers
commit e9a688bcb19348862afe30d7c85bc37c4c293471 upstream.

Until the very recent commits, many bounded random integers were
calculated using `get_random_u32() % max_plus_one`, which not only
incurs the price of a division -- indicating performance mostly was not
a real issue -- but also does not result in a uniformly distributed
output if max_plus_one is not a power of two. Recent commits moved to
using `prandom_u32_max(max_plus_one)`, which replaces the division with
a faster multiplication, but still does not solve the issue with
non-uniform output.

For some users, maybe this isn't a problem, and for others, maybe it is,
but for the majority of users, probably the question has never been
posed and analyzed, and nobody thought much about it, probably assuming
random is random is random. In other words, the unthinking expectation
of most users is likely that the resultant numbers are uniform.

So we implement here an efficient way of generating uniform bounded
random integers. Through use of compile-time evaluation, and avoiding
divisions as much as possible, this commit introduces no measurable
overhead. At least for hot-path uses tested, any potential difference
was lost in the noise. On both clang and gcc, code generation is pretty
small.

The new function, get_random_u32_below(), lives in random.h, rather than
prandom.h, and has a "get_random_xxx" function name, because it is
suitable for all uses, including cryptography.

In order to be efficient, we implement a kernel-specific variant of
Daniel Lemire's algorithm from "Fast Random Integer Generation in an
Interval", linked below. The kernel's variant takes advantage of
constant folding to avoid divisions entirely in the vast majority of
cases, works on both 32-bit and 64-bit architectures, and requests a
minimal amount of bytes from the RNG.

Link: https://arxiv.org/pdf/1805.10941.pdf
Cc: stable@vger.kernel.org # to ease future backports that use this api
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:39 +01:00
Krzysztof Kozlowski
0f9327484c arm64: dts: qcom: sdm850-samsung-w737: correct I2C12 pins drive strength
commit 3638ea010c37e1e6d93474c4b3368f403600413f upstream.

The pin configuration (done with generic pin controller helpers and
as expressed by bindings) requires children nodes with either:
1. "pins" property and the actual configuration,
2. another set of nodes with above point.

The qup_i2c12_default pin configuration used second method - with a
"pinmux" child.

Fixes: d4b341269efb ("arm64: dts: qcom: Add support for Samsung Galaxy Book2")
Cc: <stable@vger.kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220930192039.240486-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:39 +01:00
Jason A. Donenfeld
bacb7e1d42 ARM: ux500: do not directly dereference __iomem
commit 65b0e307a1a9193571db12910f382f84195a3d29 upstream.

Sparse reports that calling add_device_randomness() on `uid` is a
violation of address spaces. And indeed the next usage uses readl()
properly, but that was left out when passing it toadd_device_
randomness(). So instead copy the whole thing to the stack first.

Fixes: 4040d10a3d44 ("ARM: ux500: add DB serial number to entropy pool")
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/all/202210230819.loF90KDh-lkp@intel.com/
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Link: https://lore.kernel.org/r/20221108123755.207438-1-Jason@zx2c4.com
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:38 +01:00
Boris Burkov
a94b90ac1f btrfs: fix resolving backrefs for inline extent followed by prealloc
commit 560840afc3e63bbe5d9c5ef6b2ecf8f3589adff6 upstream.

If a file consists of an inline extent followed by a regular or prealloc
extent, then a legitimate attempt to resolve a logical address in the
non-inline region will result in add_all_parents reading the invalid
offset field of the inline extent. If the inline extent item is placed
in the leaf eb s.t. it is the first item, attempting to access the
offset field will not only be meaningless, it will go past the end of
the eb and cause this panic:

  [17.626048] BTRFS warning (device dm-2): bad eb member end: ptr 0x3fd4 start 30834688 member offset 16377 size 8
  [17.631693] general protection fault, probably for non-canonical address 0x5088000000000: 0000 [#1] SMP PTI
  [17.635041] CPU: 2 PID: 1267 Comm: btrfs Not tainted 5.12.0-07246-g75175d5adc74-dirty #199
  [17.637969] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
  [17.641995] RIP: 0010:btrfs_get_64+0xe7/0x110
  [17.649890] RSP: 0018:ffffc90001f73a08 EFLAGS: 00010202
  [17.651652] RAX: 0000000000000001 RBX: ffff88810c42d000 RCX: 0000000000000000
  [17.653921] RDX: 0005088000000000 RSI: ffffc90001f73a0f RDI: 0000000000000001
  [17.656174] RBP: 0000000000000ff9 R08: 0000000000000007 R09: c0000000fffeffff
  [17.658441] R10: ffffc90001f73790 R11: ffffc90001f73788 R12: ffff888106afe918
  [17.661070] R13: 0000000000003fd4 R14: 0000000000003f6f R15: cdcdcdcdcdcdcdcd
  [17.663617] FS:  00007f64e7627d80(0000) GS:ffff888237c80000(0000) knlGS:0000000000000000
  [17.666525] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
  [17.668664] CR2: 000055d4a39152e8 CR3: 000000010c596002 CR4: 0000000000770ee0
  [17.671253] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
  [17.673634] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
  [17.676034] PKRU: 55555554
  [17.677004] Call Trace:
  [17.677877]  add_all_parents+0x276/0x480
  [17.679325]  find_parent_nodes+0xfae/0x1590
  [17.680771]  btrfs_find_all_leafs+0x5e/0xa0
  [17.682217]  iterate_extent_inodes+0xce/0x260
  [17.683809]  ? btrfs_inode_flags_to_xflags+0x50/0x50
  [17.685597]  ? iterate_inodes_from_logical+0xa1/0xd0
  [17.687404]  iterate_inodes_from_logical+0xa1/0xd0
  [17.689121]  ? btrfs_inode_flags_to_xflags+0x50/0x50
  [17.691010]  btrfs_ioctl_logical_to_ino+0x131/0x190
  [17.692946]  btrfs_ioctl+0x104a/0x2f60
  [17.694384]  ? selinux_file_ioctl+0x182/0x220
  [17.695995]  ? __x64_sys_ioctl+0x84/0xc0
  [17.697394]  __x64_sys_ioctl+0x84/0xc0
  [17.698697]  do_syscall_64+0x33/0x40
  [17.700017]  entry_SYSCALL_64_after_hwframe+0x44/0xae
  [17.701753] RIP: 0033:0x7f64e72761b7
  [17.709355] RSP: 002b:00007ffefb067f58 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
  [17.712088] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f64e72761b7
  [17.714667] RDX: 00007ffefb067fb0 RSI: 00000000c0389424 RDI: 0000000000000003
  [17.717386] RBP: 00007ffefb06d188 R08: 000055d4a390d2b0 R09: 00007f64e7340a60
  [17.719938] R10: 0000000000000231 R11: 0000000000000246 R12: 0000000000000001
  [17.722383] R13: 0000000000000000 R14: 00000000c0389424 R15: 000055d4a38fd2a0
  [17.724839] Modules linked in:

Fix the bug by detecting the inline extent item in add_all_parents and
skipping to the next extent item.

CC: stable@vger.kernel.org # 4.9+
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Boris Burkov <boris@bur.io>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:38 +01:00
void0red
169a4cf468 btrfs: fix extent map use-after-free when handling missing device in read_one_chunk
commit 1742e1c90c3da344f3bb9b1f1309b3f47482756a upstream.

Store the error code before freeing the extent_map. Though it's
reference counted structure, in that function it's the first and last
allocation so this would lead to a potential use-after-free.

The error can happen eg. when chunk is stored on a missing device and
the degraded mount option is missing.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=216721
Reported-by: eriri <1527030098@qq.com>
Fixes: adfb69af7d8c ("btrfs: add_missing_dev() should return the actual error")
CC: stable@vger.kernel.org # 4.9+
Signed-off-by: void0red <void0red@gmail.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:38 +01:00
Josef Bacik
712b093816 btrfs: fix uninitialized parent in insert_state
commit d7c9e1be2876f63fb2178a24e0c1d5733ff98d47 upstream.

I don't know how this isn't caught when we build this in the kernel, but
while syncing extent-io-tree.c into btrfs-progs I got an error because
parent could potentially be uninitialized when we link in a new node,
specifically when the extent_io_tree is empty.  This means we could have
garbage in the parent color.  I don't know what the ramifications are of
that, but it's probably not great, so fix this by initializing parent to
NULL.  I spot checked all of our other usages in btrfs and we appear to
be doing the correct thing everywhere else.

Fixes: c7e118cf98c7 ("btrfs: open code rbtree search in insert_state")
CC: stable@vger.kernel.org # 6.0+
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:38 +01:00
Evan Quan
ed00567b17 drm/amd/pm: correct SMU13.0.0 pstate profiling clock settings
commit 32a7819ff8e25375c7515aaae5cfcb8c44a461b7 upstream.

Correct the pstate standard/peak profiling mode clock settings
for SMU13.0.0.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.0.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:38 +01:00
Evan Quan
9d455cb89d drm/amd/pm: update SMU13.0.0 reported maximum shader clock
commit 7a18e089eff02f17eaee49fc18641f5d16a8284b upstream.

Update the reported maximum shader clock to the value which can
be guarded to be achieved on all cards. This is to align with
Window setting.

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org # 6.0.x
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-07 11:11:38 +01:00