kernel/git/stable/linux.git/Documentation/ABI, branch linux-rolling-stable

usb: gadget: f_uac1_legacy: remove broken string configfs attributes

2026-09-14T11:39:35+00:00

[ Upstream commit 590d74ec8f488e06b9f1c0f8f0941f45531f3a55 ] The UAC1_STR_ATTRIBUTE macro defines configfs show/store handlers for the fn_play, fn_cap, and fn_cntl string options. The store function contains an inverted null check on the kstrndup() return value. This means every write attempt returns -ENOMEM on success and dereferences a NULL pointer on allocation failure. The attributes have been broken and unused for many years. Remove the UAC1_STR_ATTRIBUTE macro and the three attributes it generated. The internal defaults (FILE_PCM_PLAYBACK, FILE_PCM_CAPTURE, FILE_CONTROL) set in f_audio_alloc_inst() are unaffected. Fixes: 0854611a19ae ("usb: gadget: f_uac1: add configfs support") Link: https://lore.kernel.org/linux-usb/20260625113154.1954813-1-xu.yang_2@oss.nxp.com/ Suggested-by: Greg Kroah-Hartman Assisted-by: Claude:claude-sonnet-4.6 Signed-off-by: Xu Yang Reviewed-by: Frank Li Link: https://patch.msgid.link/20260713060845.3759673-1-xu.yang_2@oss.nxp.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin

Docs/ABI/damon: fix typo in intervals_goal sysfs path

2026-09-11T09:50:48+00:00

commit 1b492fc82368399123413c937f13da6ed312ee4d upstream. Patch series "Docs/ABI/damon: sysfs ABI document fixes and additions", v2. This series fixes typos and fills in missing entries in the DAMON sysfs ABI document (Documentation/ABI/testing/sysfs-kernel-mm-damon). Patch 1 fixes a path typo, "intrvals_goal" -> "intervals_goal", in four What: entries; the documented path points to a non-existent directory, so it is Cc'ed to stable. Patch 2 fixes two further typos ("WDate:", "manimum"). Patches 3 and 4 add ABI entries that exist in the kernel and are already described in usage.rst but are missing from the canonical ABI document: the 'update_tuned_intervals' state command (patch 3) and the 'tried_regions//probes/

/hits' file (patch 4). This patch (of 4): The ABI document spells the DAMON sysfs directory as "intrvals_goal" (missing 'e') in four What: entries, but the kernel creates it as "intervals_goal" (mm/damon/sysfs.c). Following the documented path therefore yields a non-existent directory. Link: https://lore.kernel.org/20260714140117.94147-1-sj@kernel.org Link: https://lore.kernel.org/20260714140117.94147-2-sj@kernel.org Fixes: e2b23dc62369 ("Docs/ABI/damon: document intervals auto-tuning ABI") Signed-off-by: Song Hu Reviewed-by: SJ Park Signed-off-by: SJ Park Cc: David Hildenbrand Cc: Liam R. Howlett Cc: Lorenzo Stoakes Cc: Michal Hocko Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Vlastimil Babka Cc: Jonathan Corbet Cc: Signed-off-by: Andrew Morton Signed-off-by: Greg Kroah-Hartman

cxl/pmem: Format the nvdimm serial number as unsigned decimal

2026-09-07T15:36:57+00:00

commit 8a80d3d65cd06ee35b913d8517fb2f2319f8e70c upstream. The CXL NVDIMM security passphrase key description and the nvdimm 'id' sysfs attribute are both derived from the CXL device serial number, but the serial number is not formatted consistently. The key description is formatted in hexadecimal while the 'id' attribute is formatted in decimal. As a result, ndctl stores the key using a decimal description while the kernel later looks it up using a hexadecimal description. For serial numbers of 10 and above, the descriptions no longer match, preventing automatic unlock after reboot. The decimal formatting has a second problem: both the key description and the 'id' attribute use the signed %lld format for a u64 PCIe Device Serial Number. Devices whose vendor OUI sets bit 63, such as Montage CXL devices, appear with negative decimal serial numbers. Format the security key description and 'id' attribute as unsigned decimal, %llu, and document that the 'id' attribute is an unsigned decimal value. The key lookup mismatch was exposed by CXL unit test cxl-security.sh when cxl_test mock serial numbers were extended to 10 and above. A work around is described for ndctl load-key users here: https://github.com/pmem/ndctl/issues/299 Cc: stable@vger.kernel.org Fixes: b5807c80b5bc ("cxl: add dimm_id support for __nvdimm_create()") Acked-by: Dan Williams Signed-off-by: Alison Schofield Link: https://patch.msgid.link/2c673a5ba0a8fa93ad160578e193bd556091fa95.1784924949.git.alison.schofield@intel.com Signed-off-by: Dave Jiang Signed-off-by: Greg Kroah-Hartman

Merge tag 'for-v7.2-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply

2026-07-30T23:50:17+00:00

Pull power supply fixes from Sebastian Reichel: - Documentation build fix for bd71828 - max17040: handle missing status supplier - macsmc: Support macOS 27 SMC firmware - bq25890: fix the -10 C NTC lookup entry * tag 'for-v7.2-rc' of git://git.kernel.org/pub/scm/linux/kernel/git/sre/linux-power-supply: power: supply: bq25890: fix the -10 C NTC lookup entry power: supply: macsmc: Support macOS 27 SMC firmware power: supply: max17040: handle missing status supplier power: supply: bd71828: add a terminating table border

power: supply: bd71828: add a terminating table border

2026-07-20T22:01:51+00:00

Fix a documentation build error by adding a bottom table border: Documentation/ABI/testing/sysfs-class-power-bd71828:1: ERROR: Malformed table. No bottom table border found. ============ =========================================== 1 automatic adjustment of input current limit 0 no adjustment of input current limit. This helps for more unusual power sources like solar modules. [docutils] Fixes: e92786dd86a2 ("power: supply: bd71828: sysfs for auto input current limitation") Signed-off-by: Randy Dunlap Acked-by: Matti Vaittinen Link: https://patch.msgid.link/20260620011821.3568674-1-rdunlap@infradead.org Signed-off-by: Sebastian Reichel

Merge tag 'mm-hotfixes-stable-2026-07-20-11-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

2026-07-20T20:04:47+00:00

Pull misc fixes from Andrew Morton: "12 hotfixes. 8 are cc:stable and the remainder address post-7.1 issues or aren't considered appropriate for backporting. 10 are for MM. All are singletons - please see the relevant changelogs for details" * tag 'mm-hotfixes-stable-2026-07-20-11-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: mm/memory-failure: trace: change memory_failure_event to ras subsystem mm: page_reporting: allow driver to set batch capacity mm/kmemleak: fix checksum computation for per-cpu objects mm/damon/core: disallow overlapping input ranges for damon_set_regions() MAINTAINERS: add Usama as a THP reviewer fat: avoid stack overflow warning mm/damon/core: validate ranges in damon_set_regions() m68k: avoid -Wunused-but-set-parameter in clear_user_page() mm/huge_memory: set PG_has_hwpoisoned only after new folio head is established mm/page_vma_mapped: fix device-private PMD handling MAINTAINERS: s/SeongJae/SJ/ userfaultfd: prevent registration of special VMAs

Merge tag 'usb-7.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb

2026-07-12T19:12:41+00:00

Pull USB fixes from Greg KH: "Here are a number of small USB driver fixes for many reported issues. Included in here are: - usb serial driver corruption and use-after-free fixes - usb gadget rndis bugfixes for malicious/buggy host connections - typec driver fixes for a load of different tiny reported issues - typec mux driver revert for a broken patch in -rc1 - usb gadget driver fixes for many different reported problems - new usb device quirks added - usbip tool fixes and some core usbip fixes as well - dwc3 driver fixes for minor issues - xhci driver fixes for reported problems - lots of other tiny usb driver fixes for many tiny issues All of these have been in linux-next with no reported issues" * tag 'usb-7.2-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb: (56 commits) USB: core: ratelimit cabling message usb: misc: usbio: fix disconnect UAF in client teardown Revert "usb: typec: mux: avoid duplicated mux switches" USB: chaoskey: Fix slab-use-after-free in chaoskey_release() usb: ucsi: huawei_gaokun: move typec_altmode off stack usb: typec: tcpci_rt1711h: unregister TCPCI port with devres usb: typec: tcpm: Fix VDM type for Enter Mode commands usb: typec: ucsi: cancel pending work on system suspend usb: typec: class: drop PD lookup reference usb: typec: ps883x: Fix DP+USB3 configuration usb: xhci: Fix sleep in atomic context in xhci_free_streams() xhci: sideband: fix ring sg table pages leak usb: gadget: udc: Fix use-after-free in gadget_match_driver usb: dwc3: run gadget disconnect from sleepable suspend context usb: sl811-hcd: disable controller wakeup on remove usb: typec: anx7411: use devm_pm_runtime_enable() usb: dwc3: fix dwc3_readl() and dwc3_writel() calls in dwc3_ulpi_setup() USB: misc: uss720: unregister parport on probe failure usb: gadget: function: rndis: add length check for header usb: gadget: function: rndis: add length check to response query ...

MAINTAINERS: s/SeongJae/SJ/

2026-07-09T22:48:53+00:00

My legal and preferred first names are SeongJae and SJ, respectively. I was using the legal name for commits and tags, while using the preferred name for conversations. It sometimes confuses people including myself. Consistently use the preferred name. Together remove copyright notes on files. Those are only confusing for people who are not familiar with the law. Meanwhile, we can infer the information in a better way from git logs and public information. Link: https://lore.kernel.org/20260630013820.143366-1-sj@kernel.org Signed-off-by: SJ Park Acked-by: Lorenzo Stoakes Acked-by: David Hildenbrand (Arm) Cc: Liam R. Howlett Cc: Michal Hocko Cc: Mike Rapoport Cc: Suren Baghdasaryan Cc: Vlastimil Babka Signed-off-by: Andrew Morton

vfio/pci: Expose latched module parameter policy in debugfs

2026-06-29T20:26:31+00:00

The nointxmask and disable_idle_d3 module parameters remain writable, but vfio-pci now latches their values into each device at init. Once a device is registered, changing the module parameter only affects future devices, leaving no direct way to confirm the effective policy for an existing device. Add a pci debugfs directory under the VFIO device debugfs root and report the per-device nointxmask and disable_idle_d3 values. These are read-only debugfs views and use the same Y/N bool output convention as the module parameters. Read-only vfio-pci parameters, such as disable_vga, are not exposed here because they cannot drift from the latched device value, therefore the existing module parameter exposure via sysfs is sufficient. Note that while only vfio-pci currently provides these options, the implementation is in vfio-pci-core and therefore properly reflects the device policy in the core, regardless of driver. Assisted-by: OpenAI Codex:gpt-5 Cc: Guixin Liu Signed-off-by: Alex Williamson Reviewed-by: Kevin Tian Link: https://lore.kernel.org/r/20260615191241.688297-7-alex.williamson@nvidia.com Signed-off-by: Alex Williamson

xhci: dbc: support runtime suspend while DbC is in enabled state

2026-06-25T14:10:08+00:00

Allow xHC to runtime suspend if DbC is in 'enabled' state for over 15 seconds without a connect. Idea is that every time we go to 'enabled' state we make sure DbC runtime pm usage is '1' and save a timestamp. if the event loop still finds DbC in enabled state 15 seconds later then it decrease DbC runtime pm usage by calling pm_runtime_put(). Enabled state is reached either when DbC is enabled by userspace or a connected/configured DbC is disconnected. When a connect is detected we make sure DbC usage count is 1. If DbC has been in 'enabled' state for 15 seconds and DbC usage is decreased to 0 by pm_runtime_put, then the whole xHC controller may runtime suspends to PCI D3 state if no other devices are using it DbC sysfs file will show 'suspended' when xHC is suspended and will wake up and enable DbC at cable connect, or when user writes 'enable' to the file. This patch was originally part of a larger DbC series, but dropped before the series was submitted to 7.2-rc1. The series has a locking issue in commit 520058b73ba3 ("xhci: dbc: serialize enabling and disabling dbc") which is also resolved by this patch Fixes: 520058b73ba3 ("xhci: dbc: serialize enabling and disabling dbc") Reported-by: Chaitanya Kumar Borah Closes: https://lore.kernel.org/linux-usb/9ce24ff5-efab-4089-92d7-709862d68e6d@intel.com Tested-by: Chaitanya Kumar Borah Signed-off-by: Mathias Nyman Link: https://patch.msgid.link/20260616100916.2234205-2-mathias.nyman@linux.intel.com Signed-off-by: Greg Kroah-Hartman