Commit graph

1,461,726 commits

Author SHA1 Message Date
Moshe Shemesh
652be53b37 net/mlx5: Add FDB peer miss rules for satellite PFs
Add satellite PF (SPF) vports to the FDB peer miss rules flow.
Introduce mlx5_esw_for_each_spf_vport() macro to iterate SPF vports.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-12-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Moshe Shemesh
425ac0e7a6 net/mlx5: Support state get/set for satellite PF ports
Extend mlx5_devlink_pf_port_fn_state_get() to support satellite PF
vports by querying their vhca_state from the query_esw_functions output
using the vport's vhca_id.

Extend mlx5_devlink_pf_port_fn_state_set() to support satellite PFs by
using the generic mlx5_esw_pf_enable/disable_hca() functions.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-11-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Or Har-Toov
ac338d8011 net/mlx5: Register SF resource on satellite PF ports
Extend port-level resource registration to satellite PF vports.

Signed-off-by: Or Har-Toov <ohartoov@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-10-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Moshe Shemesh
e020a70672 net/mlx5: Register devlink ports for satellite PFs
Include satellite PFs in mlx5_eswitch_is_pf_vf_vport() so they receive
the standard PF/VF devlink port operations. Update
mlx5_esw_devlink_port_supported() and devlink port attribute setup to
register SPF devlink ports with controller number and PF number.

Add mlx5_esw_spf_vport_to_idx() to look up the SPF array index by vport
number, and mlx5_esw_is_spf_vport() boolean wrapper to identify
satellite PF vports.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-9-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Moshe Shemesh
90a6aabb74 net/mlx5: Map SF controller to pfnum for satellite PFs
SF devlink port creation and registration used the ECPF's PCI function
as pfnum. Extend this to support satellite PF controllers by introducing
mlx5_esw_sf_controller_to_pfnum() that maps a controller number to the
corresponding PF number, and use it in SF port attribute setup and SF
creation validation.

Reorder the checks in mlx5_devlink_sf_port_new() so that
mlx5_sf_table_supported() runs before attribute validation, since the
new helper requires the eswitch to be initialized.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-8-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Moshe Shemesh
0b43d2b76c net/mlx5: Expose PF number from query_esw_functions
Extract pci_device_function from the query_esw_functions output for both
the host PF and satellite PFs, storing it alongside the existing
host_number field.

Add mlx5_esw_get_hpf_pf_num() helper that returns the host PF's actual
PCI device function when the new query format is supported, falling back
to PCI_FUNC(dev->pdev->devfn) for older firmware. Use it in devlink port
attribute setup so that host PF and VF devlink ports report the correct
PF number rather than the ECPF's own PCI function number.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-7-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Moshe Shemesh
beca1cd919 net/mlx5: Support SPF SFs in SF hardware table
Convert the SF hardware table from a fixed-size hwc array to a
dynamically allocated one, supporting satellite PF (SPF) SFs alongside
local and external host SFs. Initialize hwc entries for each SPF using
its host_number as controller. Rename MLX5_SF_HWC_EXTERNAL to
MLX5_SF_HWC_EXT_HOST and add MLX5_SF_HWC_FIRST_SPF for clarity.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-6-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Moshe Shemesh
7aed78522d net/mlx5: Initialize satellite PF SF vports
Extend satellite PF (SPF) initialization to allocate SF vports for each
SPF. For each discovered SPF, query its SF capabilities, allocate SF
vports, and store the host_number for controller identification.

Add accessor APIs mlx5_esw_get_num_spfs(),
mlx5_esw_spf_get_host_number(), mlx5_esw_sf_max_spf_functions(), and
mlx5_esw_has_spf_sfs() for use by the SF hardware table in a subsequent
patch. Also extend mlx5_esw_offloads_controller_valid() to accept SPF
controllers in addition to the host PF controller.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-5-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Moshe Shemesh
171b7fb59f net/mlx5: Initialize host PF host number earlier
Move host_number from esw->offloads to esw->esw_funcs as hpf_host_number
and initialize it during vports_init instead of offloads_enable. This
makes the host PF host number available earlier in the initialization
sequence, which is required for upcoming SF hardware table support for
satellite PFs.

Add a mlx5_esw_get_hpf_host_number() accessor to retrieve the stored
host number.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-4-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Moshe Shemesh
69978da9bb net/mlx5: Introduce generic helper for PF SFs info
Introduce mlx5_esw_sf_max_pf_functions() that queries a PF's max_num_sf
and sf_base_id using mlx5_vport_get_other_func_general_cap(), which
supports both function_id and vhca_id based addressing.

Refactor mlx5_esw_sf_max_hpf_functions() into a thin wrapper that adds
the host PF precondition checks and calls the new generic helper. Remove
mlx5_query_hca_cap_host_pf() as it is not used anymore.

This prepares for querying SFs info of Satellite PFs.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-3-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Moshe Shemesh
ed9671b8bd net/mlx5: Add satellite PF vport support
Discover satellite PFs from query_esw_functions output and allocate
eswitch vports for them. For each satellite PF, create a vport via the
CREATE_ESW_VPORT command using its vhca_id and allocate it in the
eswitch vport table.

When enabling switchdev mode, the ECPF acting as the eswitch manager
activates each satellite PF with enable_hca, loads its vport and adds
a representor. Since satellite PF devlink ports are registered in a
later patch, guard mlx5_esw_offloads_devlink_port() against vports
with no devlink port to avoid NULL dereference during representor
attach.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20260521110843.367329-2-tariqt@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 13:48:51 -07:00
Costa Shulyupin
d7391997ea docs: sysctl/net: Remove ax25, netrom, rose entries
These networking subsystems were removed in commit dd8d4bc28a
("net: remove ax25 and amateur radio (hamradio) subsystem"),
but the sysctl directory table still listed them.

Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Costa Shulyupin <costa.shul@redhat.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260515180200.1490926-1-costa.shul@redhat.com>
2026-05-25 14:31:44 -06:00
Daniel Pereira
1af866584f docs: pt_BR: update minimal software requirements in changes.rst
Update the Brazilian Portuguese translation of changes.rst to align with
the latest English version.

Key changes include:
- Updated minimum versions for Rust (1.85.0), bindgen (0.71.1), and
  pahole (1.22).
- Fixed ReST syntax for internal references (:ref:) and external links.
- Corrected formatting for tool names and config options using inline
  code backticks.
- Synchronized technical descriptions for udev, kmod, and NFS-utils.

v2:
- Fix alignment in the minimal software requirements table that broke the build.
- Fix Sphinx footnote syntax.

Signed-off-by: Daniel Pereira <danielmaraboo@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260515182200.654324-1-danielmaraboo@gmail.com>
2026-05-25 14:29:44 -06:00
Akiyoshi Kurita
04dba9d9b2 docs/ja_JP: translate more of submitting-patches.rst (no-mime)
Translate the "No MIME, no links, no compression, no attachments.
Just plain text" and "Respond to review comments" sections in
Documentation/translations/ja_JP/process/submitting-patches.rst.

Keep the wording close to the English text and wrap lines to match
the style used in the surrounding Japanese translation.

Signed-off-by: Akiyoshi Kurita <weibu@redadmin.org>
Acked-by: Akira Yokosawa <akiyks@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260513131111.432772-1-weibu@redadmin.org>
2026-05-25 14:29:01 -06:00
Mauro Carvalho Chehab
ff8b091864 docs: maintainers_include: keep the last entry at the end
The last maintainer's entry ("THE REST") is meant to be at the
end. Ensure that.

While here, use a case-insensitive sort to avoid placing "iSCSI"
near the end.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <b4f45565eff4ba6f01e84a6877813038a23ba83b.1778952682.git.mchehab+huawei@kernel.org>
2026-05-25 14:24:09 -06:00
Mauro Carvalho Chehab
0b740ec538 docs: maintainers_include: restore compatibility with Python 3.6
glob root_dir parameter requires Python 3.10, which is more than
our current Python minimal requirement.

Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <930036c189414f3f7096c22269687489f8566dd9.1778952682.git.mchehab+huawei@kernel.org>
2026-05-25 14:24:09 -06:00
Sakurai Shun
f69322f8f8 docs: fix typo in user_mode_linux_howto_v2.rst
Replace "privilges" with "privileges"

Signed-off-by: Sakurai Shun <ssh1326@icloud.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260517022456.5895-1-ssh1326@icloud.com>
2026-05-25 14:22:46 -06:00
Sakurai Shun
8a61b8a71e docs: fix typo in leds-lp55xx.rst
Replace "regsister" with "register"

Signed-off-by: Sakurai Shun <ssh1326@icloud.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260517043303.17111-1-ssh1326@icloud.com>
2026-05-25 14:20:02 -06:00
Baruch Siach
89f332c1ef docs: threat-model: add missing closing parenthesis
Fixes: a03ef333fb ("Documentation: security-bugs: explain what is and is not a security bug")
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <da8ee1e8b4e99261ec11544c4e1a4f81316ae965.1779032501.git.baruch@tkos.co.il>
2026-05-25 14:17:45 -06:00
Daniel Pereira
a0a6aa2f64 docs: pt_BR: Translate process/kernel-docs.rst into Portuguese
Translate Documentation/process/kernel-docs.rst into Portuguese (pt_BR)
and update the main index.

The content was adapted following the RST formatting rules and the
appropriate technical terminology for Brazilian Portuguese.

Signed-off-by: Daniel Pereira <danielmaraboo@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260519140035.1031694-1-danielmaraboo@gmail.com>
2026-05-25 14:10:44 -06:00
Krzysztof Kozlowski
48c3876a6a docs: submitting-patches: Clarify that "reviewer" is a person
Common understanding of word "Reviewer" is: a person performing a review
work [1]. Tools are not persons, thus cannot be reviewers in this term.
Also tools cannot make statements and cannot take responsibility for the
review.

Our docs already clearly mark that "Reviewed-by" must come from a
person:

 - "By offering my Reviewed-by: tag, I state that:"

   Usage of first person "I" and word "state"

 - "A Reviewed-by tag is *a statement of opinion* that the patch is an
    appropriate modification of the kernel without any remaining serious"

   Only a person can make a statement of opinion.

 - "Any interested reviewer (who has done the work) can offer a
   Reviewed-by"

   A person can offer a tag thus above does not grant the tool
   permission to offer a tag.

However this might not be enough, so let's clarify that only a person
with a known identity can state the "Reviewer's statement of oversight".

Link: https://en.wiktionary.org/wiki/reviewer [1]
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Vlastimil Babka <vbabka@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Acked-by: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Mark Brown <broonie@kernel.org>
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Reviewed-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Message-ID: <20260520154846.162170-2-krzysztof.kozlowski@oss.qualcomm.com>
2026-05-25 14:04:30 -06:00
Robert Marko
8071815790 arm64: dts: microchip: lan969x: add OTP node
Add the required OTP on LAN969x.

Signed-off-by: Robert Marko <robert.marko@sartura.hr>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Link: https://lore.kernel.org/r/20260515115954.701155-3-robimarko@gmail.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
2026-05-25 22:59:07 +03:00
Manikandan Muralidharan
ac75ae4367 ARM: configs: at91: sama7: add sama7d65 i3c-hci
Enable the configs needed for I3C framework and microchip
sama7d65 i3c-hci driver.

Signed-off-by: Durai Manickam KR <durai.manickamkr@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
Link: https://lore.kernel.org/r/20260525092405.1514213-6-manikandan.m@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
2026-05-25 22:55:30 +03:00
Durai Manickam KR
96b33938cf ARM: dts: microchip: add I3C controller
Add I3C controller for sama7d65 SoC.

Signed-off-by: Durai Manickam KR <durai.manickamkr@microchip.com>
Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
Link: https://lore.kernel.org/r/20260525092405.1514213-5-manikandan.m@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
2026-05-25 22:54:37 +03:00
Dan Carpenter
640656c30a net: lan966x: cleanup error handling in lan966x_fdma_rx_alloc_page_pool()
This code works, but there are a few things to tidy up:
1. No need to an unlikely() because IS_ERR() already has an unlikely()
   built in.
2. No need to use PTR_ERR_OR_ZERO() because it's not an error pointer.
3. Use the returned error code directly instead of using groveling in
   rx->page_pool to find it.

Signed-off-by: Dan Carpenter <error27@gmail.com>
Link: https://patch.msgid.link/ag7_YBWRpRmY9MGT@stanley.mountain
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 12:54:37 -07:00
Durai Manickam KR
871cb269cd clk: at91: sama7d65: add peripheral clock for I3C
Add peripheral clock description for I3C.

Signed-off-by: Durai Manickam KR <durai.manickamkr@microchip.com>
Reviewed-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
Signed-off-by: Manikandan Muralidharan <manikandan.m@microchip.com>
Link: https://lore.kernel.org/r/20260525092405.1514213-3-manikandan.m@microchip.com
Signed-off-by: Claudiu Beznea <claudiu.beznea@tuxon.dev>
2026-05-25 22:53:10 +03:00
Michael Bommarito
2156a29aec octeontx2-af: validate body pcifunc in rvu_mbox_handler_rep_event_notify
rvu_mbox_handler_rep_event_notify() in drivers/net/ethernet/marvell/
octeontx2/af/rvu_rep.c queues a sender-controlled REP_EVENT_NOTIFY
request body verbatim, and rvu_rep_up_notify() then forwards
event->pcifunc (the nested body field, distinct from the
AF-normalised header pcifunc) into rvu_get_pfvf(), rvu_get_pf() and
the AF->PF mailbox device index without any bounds check.

A VF attached to a PF that has been put into switchdev
representor mode reaches this path: the VF mailbox handler
otx2_pfvf_mbox_handler() forwards every message id including
MBOX_MSG_REP_EVENT_NOTIFY to AF without an allowlist, and the AF
dispatcher rewrites only msg->pcifunc, leaving struct
rep_event::pcifunc attacker-controlled.  The sibling
rvu_mbox_handler_esw_cfg() refuses requests whose header pcifunc
is not rvu->rep_pcifunc; this handler has no equivalent gate.

An out-of-range body pcifunc selects an &rvu->pf[]/&rvu->hwvf[]
element past the allocated array and, for RVU_EVENT_MAC_ADDR_CHANGE,
turns into a six-byte attacker-chosen OOB ether_addr_copy() target
inside the queued worker; KASAN reports a slab-out-of-bounds write
in rvu_rep_wq_handler.

Reject malformed requests at the handler entry by gating on
is_pf_func_valid(), which is already the canonical PF/VF range check
in this driver; expose it via rvu.h so callers in rvu_rep.c can use
it instead of open-coding the same range arithmetic.

Fixes: b8fea84a04 ("octeontx2-pf: Add support to sync link state between representor and VFs")
Cc: stable@vger.kernel.org
Signed-off-by: Michael Bommarito <michael.bommarito@gmail.com>
Link: https://patch.msgid.link/20260520154157.1439319-1-michael.bommarito@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 12:49:33 -07:00
Linus Torvalds
e8c2f9fdad - hpfs: fix a crash on corrupted filesystem
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Merge tag 'for-7.1/hpfs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull hpfs fix from Mikulas Patocka:

 - Fix a crash on corrupted filesystem

* tag 'for-7.1/hpfs-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  hpfs: fix a crash if hpfs_map_dnode_bitmap fails
2026-05-25 12:49:27 -07:00
Ian Rogers
bd2a5be1fe perf test: Add stat metrics --for-each-cgroup test
Add a new shell test `stat_metrics_cgrp.sh` to verify metric reporting
with `--for-each-cgroup`, both with and without `--bpf-counters`.

The test:
- Checks if system-wide monitoring is supported (skips if not).
- Finds cgroups to test.
- Runs `perf stat` with `insn_per_cycle` metric and verifies that the
  metric is reported for each cgroup.
- Dynamically pairs and verifies instructions and cycles counts to
  avoid false failures on idle cgroups.
- Tests both standard mode and BPF counters mode (if supported).

Assisted-by: Antigravity:gemini-3-flash
Signed-off-by: Ian Rogers <irogers@google.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Svilen Kanev <skanev@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2026-05-25 16:47:14 -03:00
Ian Rogers
65bd18199a perf stat: Propagate supported flag to follower cgroup BPF events
When using BPF counters with cgroups, follower events (for cgroups
other than the first one) are not opened. Because they are not opened,
their `supported` flag was left as `false`.

During metric calculation, `prepare_metric` checks if the event is
supported. If it is not supported (like the follower events), it
explicitly sets the value to `NAN`, which eventually causes the metric
to be reported as `nan %`.

Fix this by propagating the `supported` flag from the "leader" events
(the ones opened for the first cgroup) to the "follower" events.

Also add a validation check to `bperf_load_program` to ensure `nr_cgroups`
is not zero and the number of events is a multiple of `nr_cgroups`,
preventing a potential division-by-zero (SIGFPE) exception when
`num_events` evaluates to 0 (e.g., with a trailing comma in cgroups list).

Reported-by: Svilen Kanev <skanev@google.com>
Assisted-by: Antigravity:gemini-3-flash
Signed-off-by: Ian Rogers <irogers@google.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2026-05-25 16:46:17 -03:00
Linus Torvalds
13e4d2579e - fix crashes in dm-vdo if GFP_NOWAIT allocation fails
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Merge tag 'for-7.1/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fix from Mikulas Patocka:

 - fix crashes in dm-vdo if GFP_NOWAIT allocation fails

* tag 'for-7.1/dm-fixes-2' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm vdo: use GFP_NOIO for blkdev_issue_zeroout on format path
2026-05-25 12:45:40 -07:00
Tejun Heo
abdc2516f1 sched_ext: Convert ops.set_cmask() to arena-resident cmask
ops_cid.set_cmask() expects a cmask. The kernel couldn't write into the
arena, so it translated cpumask -> cmask in kernel memory and passed the
result as a trusted pointer. The BPF cmask helpers all operate on arena
cmasks though, so the BPF side had to word-by-word probe-read the kernel
cmask into an arena cmask via cmask_copy_from_kernel() before any helper
could touch it. It works, but is clumsy.

With direct kernel-side arena access now in place, build the cmask in the
arena. The kernel writes to it through the kern_va side of the dual mapping.
BPF directly dereferences it via an __arena pointer like any other arena
struct.

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Emil Tsalapatis <emil@etsalapatis.com>
2026-05-25 09:44:07 -10:00
Tejun Heo
9eca087deb sched_ext: Sub-allocator over kernel-claimed BPF arena pages
Build a per-scheduler sub-allocator on top of pages claimed from the BPF
arena registered in the previous patch. Subsequent kernel-managed
arena-resident structures (e.g. per-CPU set_cmask cmask) carve their storage
from this pool.

scx_arena_pool_init() creates a gen_pool. scx_arena_alloc() returns the
kernel VA. On exhaustion, the pool grows by claiming more pages via
bpf_arena_alloc_pages_sleepable(). Chunks are added at the kernel-side
mapping address. Callers translate to the BPF-arena form themselves if
needed.

Allocations sleep (GFP_KERNEL) - they may grow the pool through vzalloc and
arena page allocation. All current consumers run from the enable path (after
ops.init() and the kernel-side arena auto-discovery, before validate_ops()),
where sleeping is fine.

scx_arena_pool_destroy() walks each chunk, returns outstanding ranges to the
gen_pool with gen_pool_free() and then calls gen_pool_destroy(). The
underlying arena pages are released when the arena map itself is torn down,
so the pool destroy doesn't free them explicitly.

v2: Switch scx_arena_alloc() to a loop. (Andrea)

Signed-off-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andrea Righi <arighi@nvidia.com>
2026-05-25 09:44:07 -10:00
Tejun Heo
0e2819cba9 sched_ext: Require an arena for cid-form schedulers
Upcoming patches will let the kernel place arena-resident scratch shared
with the BPF program (e.g. per-CPU set_cmask cmask) so the BPF side can
dereference it directly via __arena pointers, replacing the current
cmask_copy_from_kernel() probe-read loop. That requires each cid-form
scheduler to expose its arena to the kernel. Kernel- side accesses are
recovered by the per-arena scratch-page mechanism.

bpf_scx_reg_cid() walks the struct_ops member progs via
bpf_struct_ops_for_each_prog() and reads each prog's arena via
bpf_prog_arena(). The verifier enforces one arena per program, so each
member prog contributes at most one arena. All non-NULL contributions must
match and at least one member prog must use an arena. The map ref is held on
scx_sched and dropped on sched destroy. cpu-form schedulers (bpf_scx_reg)
are unchanged - no arena requirement.

Signed-off-by: Tejun Heo <tj@kernel.org>
2026-05-25 09:44:07 -10:00
Junrui Luo
e68842b335 macsec: fix replay protection at XPN lower-PN wrap
In macsec_post_decrypt(), when pn is U32_MAX, pn + 1 overflows u32 to 0
and the first branch never fires. If next_pn_halves.lower is also in the
upper half, pn_same_half(pn, lower) is true and the XPN else-if does not
fire either, leaving next_pn_halves unchanged. An attacker that captures
the legitimate frame carrying pn == 0xFFFFFFFF on an XPN association
can then replay it indefinitely, since lowest_pn never rises above
the captured pn and macsec_decrypt() reconstructs the same IV.

Extend the XPN else-if to also fire when pn + 1 wraps to 0, so receipt
of pn == U32_MAX advances next_pn_halves to (upper + 1, 0).

Fixes: a21ecf0e03 ("macsec: Support XPN frame handling - IEEE 802.1AEbw")
Reported-by: Yuhao Jiang <danisjiang@gmail.com>
Cc: stable@vger.kernel.org
Signed-off-by: Junrui Luo <moonafterrain@outlook.com>
Link: https://patch.msgid.link/SYBPR01MB78813FD49E58F253B989F197AF012@SYBPR01MB7881.ausprd01.prod.outlook.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 12:40:47 -07:00
Tejun Heo
639609b83f Merge branch 'arena_direct_access' of git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next into for-7.2 2026-05-25 09:34:24 -10:00
Linus Torvalds
c112662a0e Bootconfig fixes for v7.1-rc4
- tools/bootconfig: Fix buf leaks in apply_xbc
   If data memory allocation failed, free the buf before return.
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Merge tag 'bootconfig-fixes-v7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace

Pull bootconfig fix from Masami Hiramatsu:

 - Fix buf leak in apply_xbc

* tag 'bootconfig-fixes-v7.1-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/trace/linux-trace:
  tools/bootconfig: Fix buf leaks in apply_xbc
2026-05-25 12:22:50 -07:00
Maoyi Xie
c96a5209dd rds: filter RDS_INFO_* getsockopt by caller's netns
The RDS_INFO_* family of getsockopt(2) options reads several
file-scope global lists that are not per-netns:

  rds_sock_info / rds6_sock_info,
  rds_sock_inc_info / rds6_sock_inc_info        -> rds_sock_list
  rds_tcp_tc_info / rds6_tcp_tc_info            -> rds_tcp_tc_list
  rds_conn_info / rds6_conn_info,
  rds_conn_message_info_cmn (for the *_SEND_MESSAGES and
  *_RETRANS_MESSAGES variants),
  rds_for_each_conn_info (for RDS_INFO_IB_CONNECTIONS)
                                                -> rds_conn_hash[]

The handlers do not filter by the caller's network namespace.
rds_info_getsockopt() has no netns or capable() check, and
rds_create() has no capable() check, so AF_RDS is reachable from
an unprivileged user namespace. As a result, an unprivileged
caller in a fresh user_ns plus netns can read the bound address
and sock inode of every RDS socket on the host, the peer address
of incoming messages on every RDS socket on the host, the peer
address and TCP sequence numbers of every rds-tcp connection on
the host, and the peer address and RDS sequence numbers of every
RDS connection on the host.

The rds-tcp transport is reachable from a non-initial netns (see
rds_set_transport()), so a one-shot init_net gate at
rds_info_getsockopt() would deny legitimate per-netns visibility
to rds-tcp callers. Instead, filter at each handler by comparing
the netns of the caller's socket to the netns of the list entry,
or to rds_conn_net(conn) for connection paths. Only copy entries
whose netns matches the caller. Counters (RDS_INFO_COUNTERS) are
aggregate statistics and remain global.

Reproducer (KASAN VM, rds and rds_tcp loaded): an AF_RDS socket
binds 127.0.0.1:4242 in init_net as root. A child process enters
a fresh user_ns plus netns and opens AF_RDS there, then calls
getsockopt(SOL_RDS, RDS_INFO_SOCKETS). Before this change, the
child sees the init_net socket. After this change, the child
sees zero entries.

Drop the rds_sock_count, rds_tcp_tc_count, and rds6_tcp_tc_count
globals. v2 used them for the size precheck and lens->nr; v3
replaced the precheck with a per-ns count from a first pass over
the list, so the globals have no remaining readers. The matching
increments and decrements in rds_create()/rds_destroy_sock() and
rds_tcp_set_callbacks()/rds_tcp_restore_callbacks() go away with
them. Reported by the kernel test robot under clang W=1.

Suggested-by: Allison Henderson <achender@kernel.org>
Suggested-by: Simon Horman <horms@kernel.org>
Reviewed-by: Allison Henderson <achender@kernel.org>
Co-developed-by: Praveen Kakkolangara <praveen.kakkolangara@aumovio.com>
Signed-off-by: Praveen Kakkolangara <praveen.kakkolangara@aumovio.com>
Signed-off-by: Maoyi Xie <maoyixie.tju@gmail.com>
Link: https://patch.msgid.link/20260520084236.2724349-1-maoyixie.tju@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 12:18:42 -07:00
Chenguang Zhao
56872b930f netlabel: fix IPv6 unlabeled address add error handling
netlbl_unlhsh_add_addr6() always returned zero after
netlbl_af6list_add(), masking failures such as duplicate
IPv6 static label entries.

Signed-off-by: Chenguang Zhao <zhaochenguang@kylinos.cn>
Acked-by: Paul Moore <paul@paul-moore.com>
Link: https://patch.msgid.link/20260522022910.398416-1-zhaochenguang@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 11:44:09 -07:00
Jiayuan Chen
67636cab27 rds: annotate data-race around rs_seen_congestion
rs_seen_congestion is read in rds_poll() and written in rds_sendmsg()
and rds_poll() without any lock.  Use READ_ONCE()/WRITE_ONCE() to
annotate these lockless accesses and silence KCSAN.

Reported-by: syzbot+fbf3648ae7f5bdb05c59@syzkaller.appspotmail.com
Closes: https://lore.kernel.org/netdev/6a0f8d94.050a0220.6b33c.0000.GAE@google.com/
Signed-off-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Reviewed-by: Allison Henderson <achender@kernel.org> 
Tested-by: Allison Henderson <achender@kernel.org>
Link: https://patch.msgid.link/20260522011621.304470-1-jiayuan.chen@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 11:36:37 -07:00
Eliot Courtney
2cf1840b0f gpu: nova-core: vbios: remove unused rom_header field
This is only used during construction, so we can remove it.

Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260525-fix-vbios-v5-22-e5e455251537@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-05-25 20:18:08 +02:00
Eliot Courtney
c70fe8b2ba gpu: nova-core: vbios: move constants and functions to be associated
Move constants and functions to be inside the impls of the types they
are related to. This makes it more obvious what each type and value is
for.

Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260525-fix-vbios-v5-21-e5e455251537@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-05-25 20:18:08 +02:00
Eliot Courtney
16c4126324 gpu: nova-core: vbios: drop redundant TryFrom import
This is unused.

Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260525-fix-vbios-v5-20-e5e455251537@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-05-25 20:18:08 +02:00
Eliot Courtney
91a8ec505e gpu: nova-core: vbios: drop unused image wrappers
These are unused currently, and it is probably sufficient to just check
the type of BIOS image in the future.

Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260525-fix-vbios-v5-19-e5e455251537@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-05-25 20:18:08 +02:00
Eliot Courtney
84eb369da6 gpu: nova-core: vbios: remove unnecessary fields in PciRomHeader
Remove unnecessary fields in PciRomHeader. This allows a simplification
to use `FromBytes` instead of reading fields piecemeal. A lot of these
checks were redundant as well since it checks the size of the `data`
first in `BiosImage`.

Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260525-fix-vbios-v5-18-e5e455251537@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-05-25 20:18:08 +02:00
Eliot Courtney
e8baefdffd gpu: nova-core: vbios: use let-else in Vbios::new
Improve readability by moving the success path outside of a nested
branch.

Reviewed-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260525-fix-vbios-v5-17-e5e455251537@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-05-25 20:18:08 +02:00
Eliot Courtney
43e7bef8c0 gpu: nova-core: vbios: use single logical block for the FWSEC section
Currently, FWSEC takes the first image and the last image. Treat the
first FWSEC image and all following image data as one logical block
for building the final FWSEC image. This avoids explicitly tracking
two FWSEC images.

Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260525-fix-vbios-v5-16-e5e455251537@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-05-25 20:18:08 +02:00
Eliot Courtney
433730a61f gpu: nova-core: vbios: use the first PCI-AT image
Currently, PCI-AT takes the final image if multiple exist. Use the
first one instead, to match nouveau behaviour.

Signed-off-by: Eliot Courtney <ecourtney@nvidia.com>
Link: https://patch.msgid.link/20260525-fix-vbios-v5-15-e5e455251537@nvidia.com
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
2026-05-25 20:17:25 +02:00
Eric Dumazet
0f700d144b net/sched: sch_ets: make cl->quantum lockless
cl->quantum does not need to be protected by RTNL or qdisc spinlock.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Victor Nogueira <victor@mojatatu.com>
Link: https://patch.msgid.link/20260522110356.1403343-1-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 11:09:27 -07:00
Yuyang Huang
061c0aa740 ipv4: igmp: annotate data-races around im->users
/proc/net/igmp walks IPv4 multicast memberships under RCU and
prints im->users without holding RTNL, while multicast join and leave
paths update the field while holding RTNL. Annotate this intentional
lockless snapshot with READ_ONCE() and the matching writers with
WRITE_ONCE().

Signed-off-by: Yuyang Huang <sigefriedhyy@gmail.com>
Reviewed-by: Jiayuan Chen <jiayuan.chen@linux.dev>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20260522093906.39764-1-sigefriedhyy@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2026-05-25 11:08:59 -07:00