58491 Commits

Author SHA1 Message Date
SeongJae Park
8acd0e8d03 xen-blkfront: Apply 'feature_persistent' parameter when connect
commit 402c43ea6b34a1b371ffeed9adf907402569eaf5 upstream.

In some use cases[1], the backend is created while the frontend doesn't
support the persistent grants feature, but later the frontend can be
changed to support the feature and reconnect.  In the past, 'blkback'
enabled the persistent grants feature since it unconditionally checked
if frontend supports the persistent grants feature for every connect
('connect_ring()') and decided whether it should use persistent grans or
not.

However, commit aac8a70db24b ("xen-blkback: add a parameter for
disabling of persistent grants") has mistakenly changed the behavior.
It made the frontend feature support check to not be repeated once it
shown the 'feature_persistent' as 'false', or the frontend doesn't
support persistent grants.

Similar behavioral change has made on 'blkfront' by commit 74a852479c68
("xen-blkfront: add a parameter for disabling of persistent grants").
This commit changes the behavior of the parameter to make effect for
every connect, so that the previous behavior of 'blkfront' can be
restored.

[1] https://lore.kernel.org/xen-devel/CAJwUmVB6H3iTs-C+U=v-pwJB7-_ZRHPxHzKRJZ22xEPW7z8a=g@mail.gmail.com/

Fixes: 74a852479c68 ("xen-blkfront: add a parameter for disabling of persistent grants")
Cc: <stable@vger.kernel.org> # 5.10.x
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Maximilian Heyne <mheyne@amazon.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20220715225108.193398-4-sj@kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-17 15:16:18 +02:00
Maximilian Heyne
f7a9a465a9 xen-blkback: Apply 'feature_persistent' parameter when connect
commit e94c6101e151b019b8babc518ac2a6ada644a5a1 upstream.

In some use cases[1], the backend is created while the frontend doesn't
support the persistent grants feature, but later the frontend can be
changed to support the feature and reconnect.  In the past, 'blkback'
enabled the persistent grants feature since it unconditionally checked
if frontend supports the persistent grants feature for every connect
('connect_ring()') and decided whether it should use persistent grans or
not.

However, commit aac8a70db24b ("xen-blkback: add a parameter for
disabling of persistent grants") has mistakenly changed the behavior.
It made the frontend feature support check to not be repeated once it
shown the 'feature_persistent' as 'false', or the frontend doesn't
support persistent grants.

This commit changes the behavior of the parameter to make effect for
every connect, so that the previous workflow can work again as expected.

[1] https://lore.kernel.org/xen-devel/CAJwUmVB6H3iTs-C+U=v-pwJB7-_ZRHPxHzKRJZ22xEPW7z8a=g@mail.gmail.com/

Reported-by: Andrii Chepurnyi <andrii.chepurnyi82@gmail.com>
Fixes: aac8a70db24b ("xen-blkback: add a parameter for disabling of persistent grants")
Cc: <stable@vger.kernel.org> # 5.10.x
Signed-off-by: Maximilian Heyne <mheyne@amazon.de>
Signed-off-by: SeongJae Park <sj@kernel.org>
Reviewed-by: Maximilian Heyne <mheyne@amazon.de>
Reviewed-by: Juergen Gross <jgross@suse.com>
Link: https://lore.kernel.org/r/20220715225108.193398-3-sj@kernel.org
Signed-off-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-17 15:16:18 +02:00
Bagas Sanjaya
ac5aca9a80 Documentation: ext4: fix cell spacing of table heading on blockmap table
[ Upstream commit 442ec1e5bb7c46c72c41898e13a5744c84cadf51 ]

Commit 3103084afcf234 ("ext4, doc: remove unnecessary escaping") removes
redundant underscore escaping, however the cell spacing in heading row of
blockmap table became not aligned anymore, hence triggers malformed table
warning:

Documentation/filesystems/ext4/blockmap.rst:3: WARNING: Malformed table.

+---------------------+------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
| i.i_block Offset   | Where It Points                                                                                                                                                                                                              |
<snipped>...

The warning caused the table not being loaded.

Realign the heading row cell by adding missing space at the first cell
to fix the warning.

Fixes: 3103084afcf234 ("ext4, doc: remove unnecessary escaping")
Cc: stable@kernel.org
Cc: Andreas Dilger <adilger.kernel@dilger.ca>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Wang Jianjian <wangjianjian3@huawei.com>
Cc: linux-ext4@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Link: https://lore.kernel.org/r/20220619072938.7334-1-bagasdotme@gmail.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 15:16:16 +02:00
Kim Phillips
4a1d77bafc x86/bugs: Enable STIBP for IBPB mitigated RETBleed
commit e6cfcdda8cbe81eaf821c897369a65fec987b404 upstream.

AMD's "Technical Guidance for Mitigating Branch Type Confusion,
Rev. 1.0 2022-07-12" whitepaper, under section 6.1.2 "IBPB On
Privileged Mode Entry / SMT Safety" says:

  Similar to the Jmp2Ret mitigation, if the code on the sibling thread
  cannot be trusted, software should set STIBP to 1 or disable SMT to
  ensure SMT safety when using this mitigation.

So, like already being done for retbleed=unret, and now also for
retbleed=ibpb, force STIBP on machines that have it, and report its SMT
vulnerability status accordingly.

 [ bp: Remove the "we" and remove "[AMD]" applicability parameter which
   doesn't work here. ]

Fixes: 3ebc17006888 ("x86/bugs: Add retbleed=ibpb")
Signed-off-by: Kim Phillips <kim.phillips@amd.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org # 5.10, 5.15, 5.19
Link: https://bugzilla.kernel.org/show_bug.cgi?id=206537
Link: https://lore.kernel.org/r/20220804192201.439596-1-kim.phillips@amd.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-17 15:16:05 +02:00
Bhupesh Sharma
517a646109 dt-bindings: mmc: sdhci-msm: Fix issues in yaml bindings
[ Upstream commit 8574adf5222d786b747022c6edcbcdddf409a139 ]

Rob pointed some remaining issues in the sdhci-msm yaml
bindings (via [1]).

Fix the same by first using the 'mmc-controller.yaml' as
'ref' and thereafter also fix the issues reported by
'make dtbs_check' check.

[1]. https://lore.kernel.org/linux-arm-msm/YnLmNCwNfoqZln12@robh.at.kernel.org/

Fixes: a45537723f4b ("dt-bindings: mmc: sdhci-msm: Convert bindings to yaml")
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Cc: Rob Herring <robh@kernel.org>
Cc: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Bhupesh Sharma <bhupesh.sharma@linaro.org>
Link: https://lore.kernel.org/r/20220514220116.1008254-1-bhupesh.sharma@linaro.org
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 15:15:30 +02:00
Benjamin Gaignard
dfacf78ed9 media: uapi: HEVC: Change pic_order_cnt definition in v4l2_hevc_dpb_entry
[ Upstream commit c4a179c7167ee16aad1267f9c99bc1ecff475585 ]

The HEVC specification describes the following:
"PicOrderCntVal is derived as follows:
PicOrderCntVal = PicOrderCntMsb + slice_pic_order_cnt_lsb
The value of PicOrderCntVal shall be in the range of
−2^31 to 2^31 − 1, inclusive."

To match with these definitions change __u16 pic_order_cnt[2]
into __s32 pic_order_cnt_val.
Change v4l2_ctrl_hevc_slice_params->slice_pic_order_cnt to __s32 too.

Signed-off-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Reviewed-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: Nicolas Dufresne <nicolas.dufresne@collabora.com>
Tested-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 15:14:50 +02:00
Marek Vasut
14053d3e52 dt-bindings: display: bridge: ldb: Fill in reg property
[ Upstream commit 16c8d76abe83d75b578d72ee22d25a52c764e14a ]

Add missing reg and reg-names properties for both 'LDB_CTRL'
and 'LVDS_CTRL' registers.

Fixes: 463db5c2ed4ae ("drm: bridge: ldb: Implement simple Freescale i.MX8MP LDB bridge")
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Maxime Ripard <maxime@cerno.tech>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Robby Cai <robby.cai@nxp.com>
Cc: Robert Foss <robert.foss@linaro.org>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Thomas Zimmermann <tzimmermann@suse.de>
Cc: devicetree@vger.kernel.org
To: dri-devel@lists.freedesktop.org
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20220504012601.423644-1-marex@denx.de
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 15:14:22 +02:00
Mikulas Patocka
8cd41a4f28 dm writecache: count number of blocks discarded, not number of discard bios
[ Upstream commit 2ee73ef60db4d79b9f9b8cd501e8188b5179449f ]

Change dm-writecache, so that it counts the number of blocks discarded
instead of the number of discard bios. Make it consistent with the
read and write statistics counters that were changed to count the
number of blocks instead of bios.

Fixes: e3a35d03407c ("dm writecache: add event counters")
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 15:14:18 +02:00
Mikulas Patocka
f06cbeff23 dm writecache: count number of blocks written, not number of write bios
[ Upstream commit b2676e1482af89714af6988ce5d31a84692e2530 ]

Change dm-writecache, so that it counts the number of blocks written
instead of the number of write bios. Bios can be split and requeued
using the dm_accept_partial_bio function, so counting bios caused
inaccurate results.

Fixes: e3a35d03407c ("dm writecache: add event counters")
Reported-by: Yu Kuai <yukuai1@huaweicloud.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 15:14:18 +02:00
Mikulas Patocka
5fef35fc1a dm writecache: count number of blocks read, not number of read bios
[ Upstream commit 2c6e755b49d273243431f5f1184654e71221fc78 ]

Change dm-writecache, so that it counts the number of blocks read
instead of the number of read bios. Bios can be split and requeued
using the dm_accept_partial_bio function, so counting bios caused
inaccurate results.

Fixes: e3a35d03407c ("dm writecache: add event counters")
Reported-by: Yu Kuai <yukuai1@huaweicloud.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 15:14:18 +02:00
James Morse
019aa3dd4e arm64: errata: Remove AES hwcap for COMPAT tasks
[ Upstream commit 44b3834b2eed595af07021b1c64e6f9bc396398b ]

Cortex-A57 and Cortex-A72 have an erratum where an interrupt that
occurs between a pair of AES instructions in aarch32 mode may corrupt
the ELR. The task will subsequently produce the wrong AES result.

The AES instructions are part of the cryptographic extensions, which are
optional. User-space software will detect the support for these
instructions from the hwcaps. If the platform doesn't support these
instructions a software implementation should be used.

Remove the hwcap bits on affected parts to indicate user-space should
not use the AES instructions.

Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: James Morse <james.morse@arm.com>
Link: https://lore.kernel.org/r/20220714161523.279570-3-james.morse@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 15:14:00 +02:00
Wyes Karny
92b465c5fe x86: Handle idle=nomwait cmdline properly for x86_idle
[ Upstream commit 8bcedb4ce04750e1ccc9a6b6433387f6a9166a56 ]

When kernel is booted with idle=nomwait do not use MWAIT as the
default idle state.

If the user boots the kernel with idle=nomwait, it is a clear
direction to not use mwait as the default idle state.
However, the current code does not take this into consideration
while selecting the default idle state on x86.

Fix it by checking for the idle=nomwait boot option in
prefer_mwait_c1_over_halt().

Also update the documentation around idle=nomwait appropriately.

[ dhansen: tweak commit message ]

Signed-off-by: Wyes Karny <wyes.karny@amd.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Link: https://lkml.kernel.org/r/fdc2dc2d0a1bc21c2f53d989ea2d2ee3ccbc0dbe.1654538381.git-series.wyes.karny@amd.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-08-17 15:13:59 +02:00
Conor Dooley
4550f7ed48 dt-bindings: riscv: fix SiFive l2-cache's cache-sets
commit b60cf8e59e61133b6c9514ff8d8c8d7049d040ef upstream.

Fix device tree schema validation error messages for the SiFive
Unmatched: ' cache-sets:0:0: 1024 was expected'.

The existing bindings allow for just 1024 cache-sets but the fu740 on
Unmatched the has 2048 cache-sets. The ISA itself permits any arbitrary
power of two, however this is not supported by dt-schema. The RTL for
the IP, to which the number of cache-sets is a tunable parameter, has
been released publicly so speculatively adding a small number of
"reasonable" values seems unwise also.

Instead, as the binding only supports two distinct controllers: add 2048
and explicitly lock it to the fu740's l2 cache while limiting 1024 to
the l2 cache on the fu540.

Fixes: af951c3a113b ("dt-bindings: riscv: Update l2 cache DT documentation to add support for SiFive FU740")
Reported-by: Atul Khare <atulkhare@rivosinc.com>
Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20220803185359.942928-1-mail@conchuod.ie
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-17 15:13:49 +02:00
Daniel Sneddon
f826d0412d x86/speculation: Add RSB VM Exit protections
commit 2b1299322016731d56807aa49254a5ea3080b6b3 upstream.

tl;dr: The Enhanced IBRS mitigation for Spectre v2 does not work as
documented for RET instructions after VM exits. Mitigate it with a new
one-entry RSB stuffing mechanism and a new LFENCE.

== Background ==

Indirect Branch Restricted Speculation (IBRS) was designed to help
mitigate Branch Target Injection and Speculative Store Bypass, i.e.
Spectre, attacks. IBRS prevents software run in less privileged modes
from affecting branch prediction in more privileged modes. IBRS requires
the MSR to be written on every privilege level change.

To overcome some of the performance issues of IBRS, Enhanced IBRS was
introduced.  eIBRS is an "always on" IBRS, in other words, just turn
it on once instead of writing the MSR on every privilege level change.
When eIBRS is enabled, more privileged modes should be protected from
less privileged modes, including protecting VMMs from guests.

== Problem ==

Here's a simplification of how guests are run on Linux' KVM:

void run_kvm_guest(void)
{
	// Prepare to run guest
	VMRESUME();
	// Clean up after guest runs
}

The execution flow for that would look something like this to the
processor:

1. Host-side: call run_kvm_guest()
2. Host-side: VMRESUME
3. Guest runs, does "CALL guest_function"
4. VM exit, host runs again
5. Host might make some "cleanup" function calls
6. Host-side: RET from run_kvm_guest()

Now, when back on the host, there are a couple of possible scenarios of
post-guest activity the host needs to do before executing host code:

* on pre-eIBRS hardware (legacy IBRS, or nothing at all), the RSB is not
touched and Linux has to do a 32-entry stuffing.

* on eIBRS hardware, VM exit with IBRS enabled, or restoring the host
IBRS=1 shortly after VM exit, has a documented side effect of flushing
the RSB except in this PBRSB situation where the software needs to stuff
the last RSB entry "by hand".

IOW, with eIBRS supported, host RET instructions should no longer be
influenced by guest behavior after the host retires a single CALL
instruction.

However, if the RET instructions are "unbalanced" with CALLs after a VM
exit as is the RET in #6, it might speculatively use the address for the
instruction after the CALL in #3 as an RSB prediction. This is a problem
since the (untrusted) guest controls this address.

Balanced CALL/RET instruction pairs such as in step #5 are not affected.

== Solution ==

The PBRSB issue affects a wide variety of Intel processors which
support eIBRS. But not all of them need mitigation. Today,
X86_FEATURE_RSB_VMEXIT triggers an RSB filling sequence that mitigates
PBRSB. Systems setting RSB_VMEXIT need no further mitigation - i.e.,
eIBRS systems which enable legacy IBRS explicitly.

However, such systems (X86_FEATURE_IBRS_ENHANCED) do not set RSB_VMEXIT
and most of them need a new mitigation.

Therefore, introduce a new feature flag X86_FEATURE_RSB_VMEXIT_LITE
which triggers a lighter-weight PBRSB mitigation versus RSB_VMEXIT.

The lighter-weight mitigation performs a CALL instruction which is
immediately followed by a speculative execution barrier (INT3). This
steers speculative execution to the barrier -- just like a retpoline
-- which ensures that speculation can never reach an unbalanced RET.
Then, ensure this CALL is retired before continuing execution with an
LFENCE.

In other words, the window of exposure is opened at VM exit where RET
behavior is troublesome. While the window is open, force RSB predictions
sampling for RET targets to a dead end at the INT3. Close the window
with the LFENCE.

There is a subset of eIBRS systems which are not vulnerable to PBRSB.
Add these systems to the cpu_vuln_whitelist[] as NO_EIBRS_PBRSB.
Future systems that aren't vulnerable will set ARCH_CAP_PBRSB_NO.

  [ bp: Massage, incorporate review comments from Andy Cooper. ]

Signed-off-by: Daniel Sneddon <daniel.sneddon@linux.intel.com>
Co-developed-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-11 13:22:05 +02:00
Ahmad Fatoum
3446422834 dt-bindings: bluetooth: broadcom: Add BCM4349B1 DT binding
commit 88b65887aa1b76cd8649a97824fb9904c1d79254 upstream.

The BCM4349B1, aka CYW/BCM89359, is a WiFi+BT chip and its Bluetooth
portion can be controlled over serial.
Extend the binding with its DT compatible.

Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-08-11 13:22:04 +02:00
Linus Torvalds
89caf57540 - Update the mitigations= kernel param documentation
- Check the IBPB feature flag before enabling IBPB in firmware calls
 because cloud vendors' fantasy when it comes to creating guest
 configurations is unlimited
 
 - Unexport sev_es_ghcb_hv_call() before 5.19 releases now that HyperV
 doesn't need it anymore
 
 - Remove dead CONFIG_* items
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Merge tag 'x86_urgent_for_v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 fixes from Borislav Petkov:

 - Update the 'mitigations=' kernel param documentation

 - Check the IBPB feature flag before enabling IBPB in firmware calls
   because cloud vendors' fantasy when it comes to creating guest
   configurations is unlimited

 - Unexport sev_es_ghcb_hv_call() before 5.19 releases now that HyperV
   doesn't need it anymore

 - Remove dead CONFIG_* items

* tag 'x86_urgent_for_v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  docs/kernel-parameters: Update descriptions for "mitigations=" param with retbleed
  x86/bugs: Do not enable IBPB at firmware entry when IBPB is not available
  Revert "x86/sev: Expose sev_es_ghcb_hv_call() for use by HyperV"
  x86/configs: Update configs in x86_debug.config
2022-07-31 09:26:53 -07:00
Eiichi Tsukata
ea304a8b89 docs/kernel-parameters: Update descriptions for "mitigations=" param with retbleed
Updates descriptions for "mitigations=off" and "mitigations=auto,nosmt"
with the respective retbleed= settings.

Signed-off-by: Eiichi Tsukata <eiichi.tsukata@nutanix.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: corbet@lwn.net
Link: https://lore.kernel.org/r/20220728043907.165688-1-eiichi.tsukata@nutanix.com
2022-07-29 20:47:07 +02:00
Linus Torvalds
33ea1340ba Including fixes from bluetooth and netfilter, no known blockers
for the release.
 
 Current release - regressions:
 
  - wifi: mac80211: do not abuse fq.lock in ieee80211_do_stop(),
    fix taking the lock before its initialized
 
  - Bluetooth: mgmt: fix double free on error path
 
 Current release - new code bugs:
 
  - eth: ice: fix tunnel checksum offload with fragmented traffic
 
 Previous releases - regressions:
 
  - tcp: md5: fix IPv4-mapped support after refactoring, don't take
    the pure v6 path
 
  - Revert "tcp: change pingpong threshold to 3", improving detection
    of interactive sessions
 
  - mld: fix netdev refcount leak in mld_{query | report}_work() due
    to a race
 
  - Bluetooth:
    - always set event mask on suspend, avoid early wake ups
    - L2CAP: fix use-after-free caused by l2cap_chan_put
 
  - bridge: do not send empty IFLA_AF_SPEC attribute
 
 Previous releases - always broken:
 
  - ping6: fix memleak in ipv6_renew_options()
 
  - sctp: prevent null-deref caused by over-eager error paths
 
  - virtio-net: fix the race between refill work and close,
    resulting in NAPI scheduled after close and a BUG()
 
  - macsec:
    - fix three netlink parsing bugs
    - avoid breaking the device state on invalid change requests
    - fix a memleak in another error path
 
 Misc:
 
  - dt-bindings: net: ethernet-controller: rework 'fixed-link' schema
 
  - two more batches of sysctl data race adornment
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from bluetooth and netfilter, no known blockers for
  the release.

  Current release - regressions:

   - wifi: mac80211: do not abuse fq.lock in ieee80211_do_stop(), fix
     taking the lock before its initialized

   - Bluetooth: mgmt: fix double free on error path

  Current release - new code bugs:

   - eth: ice: fix tunnel checksum offload with fragmented traffic

  Previous releases - regressions:

   - tcp: md5: fix IPv4-mapped support after refactoring, don't take the
     pure v6 path

   - Revert "tcp: change pingpong threshold to 3", improving detection
     of interactive sessions

   - mld: fix netdev refcount leak in mld_{query | report}_work() due to
     a race

   - Bluetooth:
      - always set event mask on suspend, avoid early wake ups
      - L2CAP: fix use-after-free caused by l2cap_chan_put

   - bridge: do not send empty IFLA_AF_SPEC attribute

  Previous releases - always broken:

   - ping6: fix memleak in ipv6_renew_options()

   - sctp: prevent null-deref caused by over-eager error paths

   - virtio-net: fix the race between refill work and close, resulting
     in NAPI scheduled after close and a BUG()

   - macsec:
      - fix three netlink parsing bugs
      - avoid breaking the device state on invalid change requests
      - fix a memleak in another error path

  Misc:

   - dt-bindings: net: ethernet-controller: rework 'fixed-link' schema

   - two more batches of sysctl data race adornment"

* tag 'net-5.19-final' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (67 commits)
  stmmac: dwmac-mediatek: fix resource leak in probe
  ipv6/addrconf: fix a null-ptr-deref bug for ip6_ptr
  net: ping6: Fix memleak in ipv6_renew_options().
  net/funeth: Fix fun_xdp_tx() and XDP packet reclaim
  sctp: leave the err path free in sctp_stream_init to sctp_stream_free
  sfc: disable softirqs for ptp TX
  ptp: ocp: Select CRC16 in the Kconfig.
  tcp: md5: fix IPv4-mapped support
  virtio-net: fix the race between refill work and close
  mptcp: Do not return EINPROGRESS when subflow creation succeeds
  Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put
  Bluetooth: Always set event mask on suspend
  Bluetooth: mgmt: Fix double free on error path
  wifi: mac80211: do not abuse fq.lock in ieee80211_do_stop()
  ice: do not setup vlan for loopback VSI
  ice: check (DD | EOF) bits on Rx descriptor rather than (EOP | RS)
  ice: Fix VSIs unable to share unicast MAC
  ice: Fix tunnel checksum offload with fragmented traffic
  ice: Fix max VLANs available for VF
  netfilter: nft_queue: only allow supported familes and hooks
  ...
2022-07-28 11:54:59 -07:00
Xin Long
aa709da0e0 Documentation: fix sctp_wmem in ip-sysctl.rst
Since commit 1033990ac5b2 ("sctp: implement memory accounting on tx path"),
SCTP has supported memory accounting on tx path where 'sctp_wmem' is used
by sk_wmem_schedule(). So we should fix the description for this option in
ip-sysctl.rst accordingly.

v1->v2:
  - Improve the description as Marcelo suggested.

Fixes: 1033990ac5b2 ("sctp: implement memory accounting on tx path")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-24 21:41:58 +01:00
Linus Torvalds
515f71412b * Check for invalid flags to KVM_CAP_X86_USER_SPACE_MSR
* Fix use of sched_setaffinity in selftests
 
 * Sync kernel headers to tools
 
 * Fix KVM_STATS_UNIT_MAX
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull kvm fixes from Paolo Bonzini:

 - Check for invalid flags to KVM_CAP_X86_USER_SPACE_MSR

 - Fix use of sched_setaffinity in selftests

 - Sync kernel headers to tools

 - Fix KVM_STATS_UNIT_MAX

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: x86: Protect the unused bits in MSR exiting flags
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  KVM: selftests: Fix target thread to be migrated in rseq_test
  KVM: stats: Fix value for KVM_STATS_UNIT_MAX for boolean stats
2022-07-23 10:22:26 -07:00
Linus Torvalds
4ba1329cbb Urgent RCU pull request for v5.19
This pull request contains a pair of commits that fix 282d8998e997 ("srcu:
 Prevent expedited GPs and blocking readers from consuming CPU"), which
 was itself a fix to an SRCU expedited grace-period problem that could
 prevent kernel live patching (KLP) from completing.  That SRCU fix for
 KLP introduced large (as in minutes) boot-time delays to embedded Linux
 kernels running on qemu/KVM.  These delays were due to the emulation of
 certain MMIO operations controlling memory layout, which were emulated
 with one expedited grace period per access.  Common configurations
 required thousands of boot-time MMIO accesses, and thus thousands of
 boot-time expedited SRCU grace periods.
 
 In these configurations, the occasional sleeps that allowed KLP to proceed
 caused excessive boot delays.  These commits preserve enough sleeps to
 permit KLP to proceed, but few enough that the virtual embedded kernels
 still boot reasonably quickly.
 
 This represents a regression introduced in the v5.19 merge window,
 and the bug is causing significant inconvenience, hence this pull request.
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Merge tag 'rcu-urgent.2022.07.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu

Pull RCU fix from Paul McKenney:
 "This contains a pair of commits that fix 282d8998e997 ("srcu: Prevent
  expedited GPs and blocking readers from consuming CPU"), which was
  itself a fix to an SRCU expedited grace-period problem that could
  prevent kernel live patching (KLP) from completing.

  That SRCU fix for KLP introduced large (as in minutes) boot-time
  delays to embedded Linux kernels running on qemu/KVM. These delays
  were due to the emulation of certain MMIO operations controlling
  memory layout, which were emulated with one expedited grace period per
  access. Common configurations required thousands of boot-time MMIO
  accesses, and thus thousands of boot-time expedited SRCU grace
  periods.

  In these configurations, the occasional sleeps that allowed KLP to
  proceed caused excessive boot delays. These commits preserve enough
  sleeps to permit KLP to proceed, but few enough that the virtual
  embedded kernels still boot reasonably quickly.

  This represents a regression introduced in the v5.19 merge window, and
  the bug is causing significant inconvenience"

* tag 'rcu-urgent.2022.07.21a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
  srcu: Make expedited RCU grace periods block even less frequently
  srcu: Block less aggressively for expedited grace periods
2022-07-22 10:01:20 -07:00
Rob Herring
030f21ba2a dt-bindings: net: fsl,fec: Add missing types to phy-reset-* properties
The phy-reset-* properties are missing type definitions and are not common
properties. Even though they are deprecated, a type is needed.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-22 12:38:16 +01:00
Rob Herring
17161c341d dt-bindings: net: ethernet-controller: Rework 'fixed-link' schema
While the if/then schemas mostly work, there's a few issues. The 'allOf'
schema will also be true if 'fixed-link' is not an array or object as a
false 'if' schema (without an 'else') will be true. In the array case
doesn't set the type (uint32-array) in the 'then' clause. In the node case,
'additionalProperties' is missing.

Rework the schema to use oneOf with each possible type.

Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-22 12:38:16 +01:00
Linus Torvalds
7ca433dc6d Networking fixes for 5.19-rc8, including fixes from can.
Previous releases - regressions:
   - tcp/udp: make early_demux back namespacified.
 
   - dsa: fix issues with vlan_filtering_is_global
 
 Previous releases - always broken:
   - ip: fix data-races around ipv4_net_table (round 2, 3 & 4)
 
   - amt: fix validation and synchronization bugs
 
   - can: fix detection of mcp251863
 
   - eth: iavf: fix handling of dummy receive descriptors
 
   - eth: lan966x: fix issues with MAC table
 
   - eth: stmmac: dwmac-mediatek: fix clock issue
 
 Misc:
   - dsa: update documentation
 
 Signed-off-by: Paolo Abeni <pabeni@redhat.com>
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Merge tag 'net-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from can.

  Still no major regressions, most of the changes are still due to data
  races fixes, plus the usual bunch of drivers fixes.

  Previous releases - regressions:

   - tcp/udp: make early_demux back namespacified.

   - dsa: fix issues with vlan_filtering_is_global

  Previous releases - always broken:

   - ip: fix data-races around ipv4_net_table (round 2, 3 & 4)

   - amt: fix validation and synchronization bugs

   - can: fix detection of mcp251863

   - eth: iavf: fix handling of dummy receive descriptors

   - eth: lan966x: fix issues with MAC table

   - eth: stmmac: dwmac-mediatek: fix clock issue

  Misc:

   - dsa: update documentation"

* tag 'net-5.19-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (107 commits)
  mlxsw: spectrum_router: Fix IPv4 nexthop gateway indication
  net/sched: cls_api: Fix flow action initialization
  tcp: Fix data-races around sysctl_tcp_max_reordering.
  tcp: Fix a data-race around sysctl_tcp_abort_on_overflow.
  tcp: Fix a data-race around sysctl_tcp_rfc1337.
  tcp: Fix a data-race around sysctl_tcp_stdurg.
  tcp: Fix a data-race around sysctl_tcp_retrans_collapse.
  tcp: Fix data-races around sysctl_tcp_slow_start_after_idle.
  tcp: Fix a data-race around sysctl_tcp_thin_linear_timeouts.
  tcp: Fix data-races around sysctl_tcp_recovery.
  tcp: Fix a data-race around sysctl_tcp_early_retrans.
  tcp: Fix data-races around sysctl knobs related to SYN option.
  udp: Fix a data-race around sysctl_udp_l3mdev_accept.
  ip: Fix data-races around sysctl_ip_prot_sock.
  ipv4: Fix data-races around sysctl_fib_multipath_hash_fields.
  ipv4: Fix data-races around sysctl_fib_multipath_hash_policy.
  ipv4: Fix a data-race around sysctl_fib_multipath_use_neigh.
  can: rcar_canfd: Add missing of_node_put() in rcar_canfd_probe()
  can: mcp251xfd: fix detection of mcp251863
  Documentation: fix udp_wmem_min in ip-sysctl.rst
  ...
2022-07-21 11:08:35 -07:00
Xin Long
c6b10de537 Documentation: fix udp_wmem_min in ip-sysctl.rst
UDP doesn't support tx memory accounting, and sysctl udp_wmem_min
is not really used anywhere. So we should fix the description in
ip-sysctl.rst accordingly.

Fixes: 95766fff6b9a ("[UDP]: Add memory accounting.")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Link: https://lore.kernel.org/r/c880a963d9b1fb5f442ae3c9e4dfa70d45296a16.1658167019.git.lucien.xin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-07-19 17:34:53 -07:00
Neeraj Upadhyay
4f2bfd9494 srcu: Make expedited RCU grace periods block even less frequently
The purpose of commit 282d8998e997 ("srcu: Prevent expedited GPs
and blocking readers from consuming CPU") was to prevent a long
series of never-blocking expedited SRCU grace periods from blocking
kernel-live-patching (KLP) progress.  Although it was successful, it also
resulted in excessive boot times on certain embedded workloads running
under qemu with the "-bios QEMU_EFI.fd" command line.  Here "excessive"
means increasing the boot time up into the three-to-four minute range.
This increase in boot time was due to the more than 6000 back-to-back
invocations of synchronize_rcu_expedited() within the KVM host OS, which
in turn resulted from qemu's emulation of a long series of MMIO accesses.

Commit 640a7d37c3f4 ("srcu: Block less aggressively for expedited grace
periods") did not significantly help this particular use case.

Zhangfei Gao and Shameerali Kolothum Thodi did experiments varying the
value of SRCU_MAX_NODELAY_PHASE with HZ=250 and with various values
of non-sleeping per phase counts on a system with preemption enabled,
and observed the following boot times:

+──────────────────────────+────────────────+
| SRCU_MAX_NODELAY_PHASE   | Boot time (s)  |
+──────────────────────────+────────────────+
| 100                      | 30.053         |
| 150                      | 25.151         |
| 200                      | 20.704         |
| 250                      | 15.748         |
| 500                      | 11.401         |
| 1000                     | 11.443         |
| 10000                    | 11.258         |
| 1000000                  | 11.154         |
+──────────────────────────+────────────────+

Analysis on the experiment results show additional improvements with
CPU-bound delays approaching one jiffy in duration. This improvement was
also seen when number of per-phase iterations were scaled to one jiffy.

This commit therefore scales per-grace-period phase number of non-sleeping
polls so that non-sleeping polls extend for about one jiffy. In addition,
the delay-calculation call to srcu_get_delay() in srcu_gp_end() is
replaced with a simple check for an expedited grace period.  This change
schedules callback invocation immediately after expedited grace periods
complete, which results in greatly improved boot times.  Testing done
by Marc and Zhangfei confirms that this change recovers most of the
performance degradation in boottime; for CONFIG_HZ_250 configuration,
specifically, boot times improve from 3m50s to 41s on Marc's setup;
and from 2m40s to ~9.7s on Zhangfei's setup.

In addition to the changes to default per phase delays, this
change adds 3 new kernel parameters - srcutree.srcu_max_nodelay,
srcutree.srcu_max_nodelay_phase, and srcutree.srcu_retry_check_delay.
This allows users to configure the srcu grace period scanning delays in
order to more quickly react to additional use cases.

Fixes: 640a7d37c3f4 ("srcu: Block less aggressively for expedited grace periods")
Fixes: 282d8998e997 ("srcu: Prevent expedited GPs and blocking readers from consuming CPU")
Reported-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Reported-by: yueluck <yueluck@163.com>
Signed-off-by: Neeraj Upadhyay <quic_neeraju@quicinc.com>
Tested-by: Marc Zyngier <maz@kernel.org>
Tested-by: Zhangfei Gao <zhangfei.gao@linaro.org>
Link: https://lore.kernel.org/all/20615615-0013-5adc-584f-2b1d5c03ebfc@linaro.org/
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
2022-07-19 11:39:59 -07:00
Oliver Upton
450a563924 KVM: stats: Fix value for KVM_STATS_UNIT_MAX for boolean stats
commit 1b870fa5573e ("kvm: stats: tell userspace which values are
boolean") added a new stat unit (boolean) but failed to raise
KVM_STATS_UNIT_MAX.

Fix by pointing UNIT_MAX at the new max value of UNIT_BOOLEAN.

Fixes: 1b870fa5573e ("kvm: stats: tell userspace which values are boolean")
Reported-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Message-Id: <20220719125229.2934273-1-oupton@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-07-19 08:54:11 -04:00
Vladimir Oltean
7b02f40350 docs: net: dsa: mention that VLANs are now refcounted on shared ports
The blamed commit updated the way in which VLANs are handled at the
cross-chip notifier layer and didn't update the documentation to say
that. Fix it.

Fixes: 134ef2388e7f ("net: dsa: add explicit support for host bridge VLANs")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
6ba1a4aa59 docs: net: dsa: delete misinformation about -EOPNOTSUPP for FDB/MDB/VLAN
Returning -EOPNOTSUPP does *NOT* mean anything special.

port_vlan_add() is actually called from 2 code paths, one is
vlan_vid_add() from 8021q module and the other is
br_switchdev_port_vlan_add() from switchdev.

The bridge has a wrapper __vlan_vid_add() which first tries via
switchdev, then if that returns -EOPNOTSUPP, tries again via the VLAN RX
filters in the 8021q module. But DSA doesn't distinguish between one
call path and the other when calling the driver's port_vlan_add(), so if
the driver returns -EOPNOTSUPP to switchdev, it also returns -EOPNOTSUPP
to the 8021q module. And the latter is a hard error.

port_fdb_add() is called from the deferred dsa_owq only, so obviously
its return code isn't propagated anywhere, and cannot be interpreted in
any way.

The return code from port_mdb_add() is propagated to the bridge, but
again, this doesn't do anything special when -EOPNOTSUPP is returned,
but rather, br_switchdev_mdb_notify() returns void.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
ea7006a7aa docs: net: dsa: re-explain what port_fdb_dump actually does
Switchdev has changed radically from its initial implementation, and the
currently provided definition is incorrect and very confusing.

Rewrite it in light of what it actually does.

Fixes: 2bedde1abbef ("net: dsa: Move FDB dump implementation inside DSA")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
4e9d9bb6df docs: net: dsa: add a section for address databases
The given definition for what VID 0 represents in the current
port_fdb_add and port_mdb_add is blatantly wrong. Delete it and explain
the concepts surrounding DSA's understanding of FDB isolation.

Fixes: c26933639b54 ("net: dsa: request drivers to perform FDB isolation")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
7f75d3dd4f docs: net: dsa: delete port_mdb_dump
This was deleted in 2017, stop documenting it.

Fixes: dc0cbff3ff9f ("net: dsa: Remove redundant MDB dump support")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
e465d507c7 docs: net: dsa: remove port_vlan_dump
This was deleted in 2017, delete the obsolete documentation.

Fixes: c069fcd82c57 ("net: dsa: Remove support for bypass bridge port attributes/vlan set")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
3083623948 docs: net: dsa: remove port_bridge_tx_fwd_offload
We've changed the API through which we can offload the bridge TX
forwarding process. Update the documentation in light of the removal of
2 DSA switch ops.

Fixes: b079922ba2ac ("net: dsa: add a "tx_fwd_offload" argument to ->port_bridge_join")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
0cb8682ebf docs: net: dsa: document port_fast_age
The provided information about FDB flushing is not really up to date.
The DSA core automatically calls port_fast_age() when necessary, and
drivers should just implement that rather than hooking it to
port_bridge_leave, port_stp_state_set and others.

Fixes: 732f794c1baf ("net: dsa: add port fast ageing")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
3c87237ecd docs: net: dsa: document port_setup and port_teardown
These methods were added without being documented, fix that.

Fixes: fd292c189a97 ("net: dsa: tear down devlink port regions when tearing down the devlink port on error")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
b763f50dc1 docs: net: dsa: document the teardown method
A teardown method was added to dsa_switch_ops without being documented.
Do so now.

Fixes: 5e3f847a02aa ("net: dsa: Add teardown callback for drivers")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
d6a0336add docs: net: dsa: document change_tag_protocol
Support for changing the tagging protocol was added without this
operation being documented; do so now.

Fixes: 53da0ebaad10 ("net: dsa: allow changing the tag protocol via the "tagging" device attribute")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
c56313a42a docs: net: dsa: add more info about the other arguments to get_tag_protocol
Changes were made to the prototype of get_tag_protocol without
describing at a high level what they are about. Update the documentation
to explain that.

Fixes: 5ed4e3eb0217 ("net: dsa: Pass a port to get_tag_protocol()")
Fixes: 4d776482ecc6 ("net: dsa: Get information about stacked DSA protocol")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:37 +01:00
Vladimir Oltean
c3f0e84d10 docs: net: dsa: rename tag_protocol to get_tag_protocol
Since the blamed commit, the enum was turned into a function pointer and
also renamed. Update the documentation.

Fixes: 7b314362a234 ("net: dsa: Allow the DSA driver to indicate the tag protocol")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:36 +01:00
Vladimir Oltean
54367831c5 docs: net: dsa: document the shutdown behavior
Document the changes that took place in the DSA core in the blamed
commit.

Fixes: 0650bf52b31f ("net: dsa: be compatible with masters which unregister on shutdown")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:36 +01:00
Vladimir Oltean
19b3b13c93 docs: net: dsa: update probing documentation
Since the blamed commit we don't have register_switch_driver() and
unregister_switch_driver() anymore. Additionally, the expected
dsa_register_switch() and dsa_unregister_switch() calls aren't
documented.

Update the probing section with the details of how things are currently
done.

Fixes: 93e86b3bc842 ("net: dsa: Remove legacy probing support")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-07-18 12:44:36 +01:00
Linus Torvalds
a8ebfcd33c RISC-V:
* Fix missing PAGE_PFN_MASK
 
 * Fix SRCU deadlock caused by kvm_riscv_check_vcpu_requests()
 
 x86:
 
 * Fix for nested virtualization when TSC scaling is active
 
 * Estimate the size of fastcc subroutines conservatively, avoiding disastrous
   underestimation when return thunks are enabled
 
 * Avoid possible use of uninitialized fields of 'struct kvm_lapic_irq'
 
 Generic:
 
 * Mark as such the boolean values available from the statistics file descriptors
 
 * Clarify statistics documentation
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Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

Pull KVM fixes from Paolo Bonzini:
 "RISC-V:
   - Fix missing PAGE_PFN_MASK

   - Fix SRCU deadlock caused by kvm_riscv_check_vcpu_requests()

  x86:
   - Fix for nested virtualization when TSC scaling is active

   - Estimate the size of fastcc subroutines conservatively, avoiding
     disastrous underestimation when return thunks are enabled

   - Avoid possible use of uninitialized fields of 'struct
     kvm_lapic_irq'

  Generic:
   - Mark as such the boolean values available from the statistics file
     descriptors

   - Clarify statistics documentation"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: emulate: do not adjust size of fastop and setcc subroutines
  KVM: x86: Fully initialize 'struct kvm_lapic_irq' in kvm_pv_kick_cpu_op()
  Documentation: kvm: clarify histogram units
  kvm: stats: tell userspace which values are boolean
  x86/kvm: fix FASTOP_SIZE when return thunks are enabled
  KVM: nVMX: Always enable TSC scaling for L2 when it was enabled for L1
  RISC-V: KVM: Fix SRCU deadlock caused by kvm_riscv_check_vcpu_requests()
  riscv: Fix missing PAGE_PFN_MASK
2022-07-15 10:31:46 -07:00
Linus Torvalds
1ce9d792e8 A folio locking fixup that Xiubo and David cooperated on, marked for
stable.  Most of it is in netfs but I picked it up into ceph tree on
 agreement with David.
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Merge tag 'ceph-for-5.19-rc7' of https://github.com/ceph/ceph-client

Pull ceph fix from Ilya Dryomov:
 "A folio locking fixup that Xiubo and David cooperated on, marked for
  stable. Most of it is in netfs but I picked it up into ceph tree on
  agreement with David"

* tag 'ceph-for-5.19-rc7' of https://github.com/ceph/ceph-client:
  netfs: do not unlock and put the folio twice
2022-07-15 10:27:28 -07:00
Linus Torvalds
1c49f281c9 ARM: SoC fixes for 5.19, part 3
Most of the contents are bugfixes for the devicetree files:
 
  - A Qualcomm MSM8974 pin controller regression, caused by a cleanup
    patch that gets partially reverted here.
 
  - Missing properties for Broadcom BCM49xx to fix timer detection and
    SMP boot.
 
  - Fix touchscreen pinctrl for imx6ull-colibri board
 
  - Multiple fixes for Rockchip rk3399 based machines including the
    vdu clock-rate fix, otg port fix on Quartz64-A and ethernet
    on Quartz64-B
 
  - Fixes for misspelled DT contents causing minor problems on
    imx6qdl-ts7970m, orangepi-zero, sama5d2, kontron-kswitch-d10,
    and ls1028a
 
 And a couple of changes elsewhere:
 
  - Fix binding for Allwinner D1 display pipeline
 
  - Trivial code fixes to the TEE and reset controller driver subsystems
    and the rockchip platform code.
 
  - Multiple updates to the MAINTAINERS files, marking the Palm Treo
    support as orphaned, and fixing some entries for added or changed
    file names.
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Merge tag 'soc-fixes-5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull ARM SoC fixes from Arnd Bergmann:
 "Most of the contents are bugfixes for the devicetree files:

   - A Qualcomm MSM8974 pin controller regression, caused by a cleanup
     patch that gets partially reverted here.

   - Missing properties for Broadcom BCM49xx to fix timer detection and
     SMP boot.

   - Fix touchscreen pinctrl for imx6ull-colibri board

   - Multiple fixes for Rockchip rk3399 based machines including the vdu
     clock-rate fix, otg port fix on Quartz64-A and ethernet on
     Quartz64-B

   - Fixes for misspelled DT contents causing minor problems on
     imx6qdl-ts7970m, orangepi-zero, sama5d2, kontron-kswitch-d10, and
     ls1028a

  And a couple of changes elsewhere:

   - Fix binding for Allwinner D1 display pipeline

   - Trivial code fixes to the TEE and reset controller driver
     subsystems and the rockchip platform code.

   - Multiple updates to the MAINTAINERS files, marking the Palm Treo
     support as orphaned, and fixing some entries for added or changed
     file names"

* tag 'soc-fixes-5.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (21 commits)
  arm64: dts: broadcom: bcm4908: Fix cpu node for smp boot
  arm64: dts: broadcom: bcm4908: Fix timer node for BCM4906 SoC
  ARM: dts: sunxi: Fix SPI NOR campatible on Orange Pi Zero
  ARM: dts: at91: sama5d2: Fix typo in i2s1 node
  tee: tee_get_drvdata(): fix description of return value
  optee: Remove duplicate 'of' in two places.
  ARM: dts: kswitch-d10: use open drain mode for coma-mode pins
  ARM: dts: colibri-imx6ull: fix snvs pinmux group
  optee: smc_abi.c: fix wrong pointer passed to IS_ERR/PTR_ERR()
  MAINTAINERS: add polarfire rng, pci and clock drivers
  MAINTAINERS: mark ARM/PALM TREO SUPPORT orphan
  ARM: dts: imx6qdl-ts7970: Fix ngpio typo and count
  arm64: dts: ls1028a: Update SFP node to include clock
  dt-bindings: display: sun4i: Fix D1 pipeline count
  ARM: dts: qcom: msm8974: re-add missing pinctrl
  reset: Fix devm bulk optional exclusive control getter
  MAINTAINERS: rectify entry for SYNOPSYS AXS10x RESET CONTROLLER DRIVER
  ARM: rockchip: Add missing of_node_put() in rockchip_suspend_init()
  arm64: dts: rockchip: Assign RK3399 VDU clock rate
  arm64: dts: rockchip: Fix Quartz64-A dwc3 otg port behavior
  ...
2022-07-15 10:16:44 -07:00
Linus Torvalds
9bd572ec7a Including fixes from netfilter, bpf and wireless.
Current release - regressions:
 
  - wifi: rtw88: fix write to const table of channel parameters
 
 Current release - new code bugs:
 
  - mac80211: add gfp_t parameter to
    ieeee80211_obss_color_collision_notify
 
  - mlx5:
    - TC, allow offload from uplink to other PF's VF
    - Lag, decouple FDB selection and shared FDB
    - Lag, correct get the port select mode str
 
  - bnxt_en: fix and simplify XDP transmit path
 
  - r8152: fix accessing unset transport header
 
 Previous releases - regressions:
 
  - conntrack: fix crash due to confirmed bit load reordering
    (after atomic -> refcount conversion)
 
  - stmmac: dwc-qos: disable split header for Tegra194
 
 Previous releases - always broken:
 
  - mlx5e: ring the TX doorbell on DMA errors
 
  - bpf: make sure mac_header was set before using it
 
  - mac80211: do not wake queues on a vif that is being stopped
 
  - mac80211: fix queue selection for mesh/OCB interfaces
 
  - ip: fix dflt addr selection for connected nexthop
 
  - seg6: fix skb checksums for SRH encapsulation/insertion
 
  - xdp: fix spurious packet loss in generic XDP TX path
 
  - bunch of sysctl data race fixes
 
  - nf_log: incorrect offset to network header
 
 Misc:
 
  - bpf: add flags arg to bpf_dynptr_read and bpf_dynptr_write APIs
 
 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Merge tag 'net-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter, bpf and wireless.

  Still no major regressions, the release continues to be calm. An
  uptick of fixes this time around due to trivial data race fixes and
  patches flowing down from subtrees.

  There has been a few driver fixes (particularly a few fixes for false
  positives due to 66e4c8d95008 which went into -next in May!) that make
  me worry the wide testing is not exactly fully through.

  So "calm" but not "let's just cut the final ASAP" vibes over here.

  Current release - regressions:

   - wifi: rtw88: fix write to const table of channel parameters

  Current release - new code bugs:

   - mac80211: add gfp_t arg to ieeee80211_obss_color_collision_notify

   - mlx5:
      - TC, allow offload from uplink to other PF's VF
      - Lag, decouple FDB selection and shared FDB
      - Lag, correct get the port select mode str

   - bnxt_en: fix and simplify XDP transmit path

   - r8152: fix accessing unset transport header

  Previous releases - regressions:

   - conntrack: fix crash due to confirmed bit load reordering (after
     atomic -> refcount conversion)

   - stmmac: dwc-qos: disable split header for Tegra194

  Previous releases - always broken:

   - mlx5e: ring the TX doorbell on DMA errors

   - bpf: make sure mac_header was set before using it

   - mac80211: do not wake queues on a vif that is being stopped

   - mac80211: fix queue selection for mesh/OCB interfaces

   - ip: fix dflt addr selection for connected nexthop

   - seg6: fix skb checksums for SRH encapsulation/insertion

   - xdp: fix spurious packet loss in generic XDP TX path

   - bunch of sysctl data race fixes

   - nf_log: incorrect offset to network header

  Misc:

   - bpf: add flags arg to bpf_dynptr_read and bpf_dynptr_write APIs"

* tag 'net-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (87 commits)
  nfp: flower: configure tunnel neighbour on cmsg rx
  net/tls: Check for errors in tls_device_init
  MAINTAINERS: Add an additional maintainer to the AMD XGBE driver
  xen/netback: avoid entering xenvif_rx_next_skb() with an empty rx queue
  selftests/net: test nexthop without gw
  ip: fix dflt addr selection for connected nexthop
  net: atlantic: remove aq_nic_deinit() when resume
  net: atlantic: remove deep parameter on suspend/resume functions
  sfc: fix kernel panic when creating VF
  seg6: bpf: fix skb checksum in bpf_push_seg6_encap()
  seg6: fix skb checksum in SRv6 End.B6 and End.B6.Encaps behaviors
  seg6: fix skb checksum evaluation in SRH encapsulation/insertion
  sfc: fix use after free when disabling sriov
  net: sunhme: output link status with a single print.
  r8152: fix accessing unset transport header
  net: stmmac: fix leaks in probe
  net: ftgmac100: Hold reference returned by of_get_child_by_name()
  nexthop: Fix data-races around nexthop_compat_mode.
  ipv4: Fix data-races around sysctl_ip_dynaddr.
  tcp: Fix a data-race around sysctl_tcp_ecn_fallback.
  ...
2022-07-14 12:48:07 -07:00
Linus Torvalds
c4634a3c7d sound fixes for 5.19-rc7
Hopefully the last PR for 5.19.  This became bigger than wished,
 but all changes are pretty device-specific small fixes, which
 look less worrisome.
 
 The majority of changes are about various ASoC fixes, while the
 usual HD-audio quirks are included as well.
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Merge tag 'sound-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound

Pull sound fixes from Takashi Iwai:
 "Hopefully the last one for 5.19. This became bigger than wished, but
  all changes are pretty device-specific small fixes, which look less
  worrisome.

  The majority of changes are about various ASoC fixes, while the usual
  HD-audio quirks are included as well"

* tag 'sound-5.19-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (28 commits)
  ALSA: hda/realtek - Enable the headset-mic on a Xiaomi's laptop
  ALSA: hda/realtek - Fix headset mic problem for a HP machine with alc221
  ALSA: hda/realtek: fix mute/micmute LEDs for HP machines
  ALSA: hda/realtek - Fix headset mic problem for a HP machine with alc671
  ALSA: hda - Add fixup for Dell Latitidue E5430
  ALSA: hda/conexant: Apply quirk for another HP ProDesk 600 G3 model
  ALSA: hda/realtek: Fix headset mic for Acer SF313-51
  ASoC: Intel: Skylake: Correct the handling of fmt_config flexible array
  ASoC: Intel: Skylake: Correct the ssp rate discovery in skl_get_ssp_clks()
  ASoC: rt5640: Fix the wrong state of JD1 and JD2
  ASoC: Intel: sof_rt5682: fix out-of-bounds array access
  ASoC: qdsp6: fix potential memory leak in q6apm_get_audioreach_graph()
  ASoC: tas2764: Fix amp gain register offset & default
  ASoC: tas2764: Correct playback volume range
  ASoC: tas2764: Fix and extend FSYNC polarity handling
  ASoC: tas2764: Add post reset delays
  ASoC: dt-bindings: Fix description for msm8916
  ASoC: doc: Capitalize RESET line name
  ASoC: arizona: Update arizona_aif_cfg_changed to use RX_BCLK_RATE
  ASoC: cs47l92: Fix event generation for OUT1 demux
  ...
2022-07-14 11:34:16 -07:00
Paolo Bonzini
942d9e8952 Documentation: kvm: clarify histogram units
In the case of histogram statistics, the values are always sample
counts; the unit instead applies to the bucket range.  For example,
halt_poll_success_hist is a nanosecond statistic because the buckets are
for 0ns, 1ns, 2-3ns, 4-7ns etc.  There isn't really any other sensible
interpretation, but clarify this anyway in the Documentation.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-07-14 08:02:09 -04:00
Paolo Bonzini
1b870fa557 kvm: stats: tell userspace which values are boolean
Some of the statistics values exported by KVM are always only 0 or 1.
It can be useful to export this fact to userspace so that it can track
them specially (for example by polling the value every now and then to
compute a % of time spent in a specific state).

Therefore, add "boolean value" as a new "unit".  While it is not exactly
a unit, it walks and quacks like one.  In particular, using the type
would be wrong because boolean values could be instantaneous or peak
values (e.g. "is the rmap allocated?") or even two-bucket histograms
(e.g. "number of posted vs. non-posted interrupt injections").

Suggested-by: Amneesh Singh <natto@weirdnatto.in>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-07-14 08:01:59 -04:00
Xiubo Li
fac47b43c7 netfs: do not unlock and put the folio twice
check_write_begin() will unlock and put the folio when return
non-zero.  So we should avoid unlocking and putting it twice in
netfs layer.

Change the way ->check_write_begin() works in the following two ways:

 (1) Pass it a pointer to the folio pointer, allowing it to unlock and put
     the folio prior to doing the stuff it wants to do, provided it clears
     the folio pointer.

 (2) Change the return values such that 0 with folio pointer set means
     continue, 0 with folio pointer cleared means re-get and all error
     codes indicating an error (no special treatment for -EAGAIN).

[ bagasdotme: use Sphinx code text syntax for *foliop pointer ]

Cc: stable@vger.kernel.org
Link: https://tracker.ceph.com/issues/56423
Link: https://lore.kernel.org/r/cf169f43-8ee7-8697-25da-0204d1b4343e@redhat.com
Co-developed-by: David Howells <dhowells@redhat.com>
Signed-off-by: Xiubo Li <xiubli@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Bagas Sanjaya <bagasdotme@gmail.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
2022-07-14 10:10:12 +02:00