linux/Documentation, branch v6.15

Merge tag 'net-6.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-05-22T16:15:19Z

Pull networking fixes from Paolo Abeni: "This is somewhat larger than what I hoped for, with a few PRs from subsystems and follow-ups for the recent netdev locking changes, anyhow there are no known pending regressions. Including fixes from bluetooth, ipsec and CAN. Current release - regressions: - eth: team: grab team lock during team_change_rx_flags - eth: bnxt_en: fix netdev locking in ULP IRQ functions Current release - new code bugs: - xfrm: ipcomp: fix truesize computation on receive - eth: airoha: fix page recycling in airoha_qdma_rx_process() Previous releases - regressions: - sched: hfsc: fix qlen accounting bug when using peek in hfsc_enqueue() - mr: consolidate the ipmr_can_free_table() checks. - bridge: netfilter: fix forwarding of fragmented packets - xsk: bring back busy polling support in XDP_COPY - can: - add missing rcu read protection for procfs content - kvaser_pciefd: force IRQ edge in case of nested IRQ Previous releases - always broken: - xfrm: espintcp: remove encap socket caching to avoid reference leak - bluetooth: use skb_pull to avoid unsafe access in QCA dump handling - eth: idpf: - fix null-ptr-deref in idpf_features_check - fix idpf_vport_splitq_napi_poll() - eth: hibmcge: fix wrong ndo.open() after reset fail issue" * tag 'net-6.15-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (40 commits) octeontx2-af: Fix APR entry mapping based on APR_LMT_CFG octeontx2-af: Set LMT_ENA bit for APR table entries net/tipc: fix slab-use-after-free Read in tipc_aead_encrypt_done octeontx2-pf: Avoid adding dcbnl_ops for LBK and SDP vf selftests/tc-testing: Add an HFSC qlen accounting test sch_hfsc: Fix qlen accounting bug when using peek in hfsc_enqueue() idpf: fix idpf_vport_splitq_napi_poll() net: hibmcge: fix wrong ndo.open() after reset fail issue. net: hibmcge: fix incorrect statistics update issue xsk: Bring back busy polling support in XDP_COPY can: slcan: allow reception of short error messages net: lan743x: Restore SGMII CTRL register on resume bnxt_en: Fix netdev locking in ULP IRQ functions MAINTAINERS: Drop myself to reviewer for ravb driver net: dwmac-sun8i: Use parsed internal PHY address instead of 1 net: ethernet: ti: am65-cpsw: Lower random mac address error print to info can: kvaser_pciefd: Continue parsing DMA buf after dropped RX can: kvaser_pciefd: Fix echo_skb race can: kvaser_pciefd: Force IRQ edge in case of nested IRQ idpf: fix null-ptr-deref in idpf_features_check ...

dt-bindings: can: microchip,mcp2510: Fix $id path

2025-05-19T12:06:42Z

The "$id" value must match the relative path under bindings/ and is missing the "net" sub-directory. Fixes: 09328600c2f9 ("dt-bindings: can: convert microchip,mcp251x.txt to yaml") Signed-off-by: "Rob Herring (Arm)" Acked-by: Conor Dooley Link: https://patch.msgid.link/20250507154201.1589542-1-robh@kernel.org Signed-off-by: Marc Kleine-Budde

Merge tag 'hid-for-linus-2025051501' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid

2025-05-15T17:57:24Z

Pull HID fixes from Benjamin Tissoires: - fix a few potential memory leaks in the wacom driver (Qasim Ijaz) - AMD SFH fixes when there is only one SRA sensor (Mario Limonciello) - HID-BPF dispatch UAF fix that happens on removal of the Logitech DJ receiver (Rong Zhang) - various minor fixes and usual device ID additions * tag 'hid-for-linus-2025051501' of git://git.kernel.org/pub/scm/linux/kernel/git/hid/hid: HID: bpf: abort dispatch if device destroyed HID: quirks: Add ADATA XPG alpha wireless mouse support HID: hid-steam: Remove the unused variable connected HID: amd_sfh: Avoid clearing reports for SRA sensor HID: amd_sfh: Fix SRA sensor when it's the only sensor HID: wacom: fix shift OOB in kfifo allocation for zero pktlen HID: uclogic: Add NULL check in uclogic_input_configured() HID: wacom: fix memory leak on size mismatch in wacom_wac_queue_flush() HID: wacom: handle kzalloc() allocation failure in wacom_wac_queue_flush() HID: thrustmaster: fix memory leak in thrustmaster_interrupts() HID: hid-appletb-kbd: Fix wrong date and kernel version in sysfs interface docs HID: bpf: fix BTN_STYLUS for the XP Pen ACK05 remote

Merge tag 'net-6.15-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2025-05-15T17:40:49Z

Pull networking fixes from Jakub Kicinski: "Including fixes from Bluetooth and wireless. A few more fixes for the locking changes trickling in. Nothing too alarming, I suspect those will continue for another release. Other than that things are slowing down nicely. Current release - fix to a fix: - Bluetooth: hci_event: use key encryption size when its known - tools: ynl-gen: allow multi-attr without nested-attributes again Current release - regressions: - locking fixes: - lock lower level devices when updating features - eth: bnxt_en: bring back rtnl_lock() in the bnxt_open() path - devmem: fix panic when Netlink socket closes after module unload Current release - new code bugs: - eth: txgbe: fixes for FW communication on new AML devices Previous releases - always broken: - sched: flush gso_skb list too during ->change(), avoid potential null-deref on reconfig - wifi: mt76: disable NAPI on driver removal - hv_netvsc: fix error 'nvsp_rndis_pkt_complete error status: 2'" * tag 'net-6.15-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (44 commits) net: devmem: fix kernel panic when netlink socket close after module unload tsnep: fix timestamping with a stacked DSA driver net/tls: fix kernel panic when alloc_page failed bnxt_en: bring back rtnl_lock() in the bnxt_open() path mlxsw: spectrum_router: Fix use-after-free when deleting GRE net devices wifi: mac80211: Set n_channels after allocating struct cfg80211_scan_request octeontx2-pf: Do not reallocate all ntuple filters wifi: mt76: mt7925: fix missing hdr_trans_tlv command for broadcast wtbl wifi: mt76: disable napi on driver removal Drivers: hv: vmbus: Remove vmbus_sendpacket_pagebuffer() hv_netvsc: Remove rmsg_pgcnt hv_netvsc: Preserve contiguous PFN grouping in the page buffer array hv_netvsc: Use vmbus_sendpacket_mpb_desc() to send VMBus messages Drivers: hv: Allow vmbus_sendpacket_mpb_desc() to create multiple ranges octeontx2-af: Fix CGX Receive counters net: ethernet: mtk_eth_soc: fix typo for declaration MT7988 ESW capability net: libwx: Fix FW mailbox unknown command net: libwx: Fix FW mailbox reply timeout net: txgbe: Fix to calculate EEPROM checksum for AML devices octeontx2-pf: macsec: Fix incorrect max transmit size in TX secy ...

Merge tag 'kbuild-fixes-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild

2025-05-15T05:24:17Z

Pull Kbuild fixes from Masahiro Yamada: - Add proper pahole version dependency to CONFIG_GENDWARFKSYMS to avoid module loading errors - Fix UAPI header tests for the OpenRISC architecture - Add dependency on the libdw package in Debian and RPM packages - Disable -Wdefault-const-init-unsafe warnings on Clang - Make "make clean ARCH=um" also clean the arch/x86/ directory - Revert the use of -fmacro-prefix-map=, which causes issues with debugger usability * tag 'kbuild-fixes-v6.15' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: kbuild: fix typos "module.builtin" to "modules.builtin" Revert "kbuild, rust: use -fremap-path-prefix to make paths relative" Revert "kbuild: make all file references relative to source root" kbuild: fix dependency on sorttable init: remove unused CONFIG_CC_CAN_LINK_STATIC um: let 'make clean' properly clean underlying SUBARCH as well kbuild: Disable -Wdefault-const-init-unsafe kbuild: rpm-pkg: Add (elfutils-devel or libdw-devel) to BuildRequires kbuild: deb-pkg: Add libdw-dev:native to Build-Depends-Arch usr/include: openrisc: don't HDRTEST bpf_perf_event.h kbuild: Require pahole v1.29 with GENDWARFKSYMS on X86

netlink: specs: tc: all actions are indexed arrays

2025-05-15T02:11:15Z

Some TC filters have actions listed as indexed arrays of nests and some as just nests. They are all indexed arrays, the handling is common across filters. Fixes: 2267672a6190 ("doc/netlink/specs: Update the tc spec") Link: https://patch.msgid.link/20250513221638.842532-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

netlink: specs: tc: fix a couple of attribute names

2025-05-15T02:11:09Z

Fix up spelling of two attribute names. These are clearly typoes and will prevent C codegen from working. Let's treat this as a fix to get the correction into users' hands ASAP, and prevent anyone depending on the wrong names. Fixes: a1bcfde83669 ("doc/netlink/specs: Add a spec for tc") Link: https://patch.msgid.link/20250513221316.841700-1-kuba@kernel.org Signed-off-by: Jakub Kicinski

docs: networking: timestamping: improve stacked PHC sentence

2025-05-13T22:40:54Z

The first paragraph makes no grammatical sense. I suppose a portion of the intended sentece is missing: "[The challenge with ] stacked PHCs (...) is that they uncover bugs". Rephrase, and at the same time simplify the structure of the sentence a little bit, it is not easy to follow. Fixes: 94d9f78f4d64 ("docs: networking: timestamping: add section for stacked PHC devices") Signed-off-by: Vladimir Oltean Acked-by: Richard Cochran Link: https://patch.msgid.link/20250512131751.320283-1-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski

Revert "kbuild: make all file references relative to source root"

2025-05-12T06:04:13Z

This reverts commit cacd22ce69585a91c386243cd662ada962431e63. -ffile-prefix-map breaks the ability of debuggers to find the source file corresponding to object files. As there is no simple or uniform way to specify the source directory explicitly, this breaks developers workflows. Revert the unconditional usage of -ffile-prefix-map. Reported-by: Matthieu Baerts Closes: https://lore.kernel.org/lkml/edc50aa7-0740-4942-8c15-96f12f2acc7e@kernel.org/ Reported-by: Ville Syrjälä Closes: https://lore.kernel.org/lkml/aBEttQH4kimHFScx@intel.com/ Fixes: cacd22ce6958 ("kbuild: make all file references relative to source root") Signed-off-by: Thomas Weißschuh Signed-off-by: Masahiro Yamada

Merge tag 'its-for-linus-20250509' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2025-05-12T00:23:03Z

Pull x86 ITS mitigation from Dave Hansen: "Mitigate Indirect Target Selection (ITS) issue. I'd describe this one as a good old CPU bug where the behavior is _obviously_ wrong, but since it just results in bad predictions it wasn't wrong enough to notice. Well, the researchers noticed and also realized that thus bug undermined a bunch of existing indirect branch mitigations. Thus the unusually wide impact on this one. Details: ITS is a bug in some Intel CPUs that affects indirect branches including RETs in the first half of a cacheline. Due to ITS such branches may get wrongly predicted to a target of (direct or indirect) branch that is located in the second half of a cacheline. Researchers at VUSec found this behavior and reported to Intel. Affected processors: - Cascade Lake, Cooper Lake, Whiskey Lake V, Coffee Lake R, Comet Lake, Ice Lake, Tiger Lake and Rocket Lake. Scope of impact: - Guest/host isolation: When eIBRS is used for guest/host isolation, the indirect branches in the VMM may still be predicted with targets corresponding to direct branches in the guest. - Intra-mode using cBPF: cBPF can be used to poison the branch history to exploit ITS. Realigning the indirect branches and RETs mitigates this attack vector. - User/kernel: With eIBRS enabled user/kernel isolation is *not* impacted by ITS. - Indirect Branch Prediction Barrier (IBPB): Due to this bug indirect branches may be predicted with targets corresponding to direct branches which were executed prior to IBPB. This will be fixed in the microcode. Mitigation: As indirect branches in the first half of cacheline are affected, the mitigation is to replace those indirect branches with a call to thunk that is aligned to the second half of the cacheline. RETs that take prediction from RSB are not affected, but they may be affected by RSB-underflow condition. So, RETs in the first half of cacheline are also patched to a return thunk that executes the RET aligned to second half of cacheline" * tag 'its-for-linus-20250509' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: selftest/x86/bugs: Add selftests for ITS x86/its: FineIBT-paranoid vs ITS x86/its: Use dynamic thunks for indirect branches x86/ibt: Keep IBT disabled during alternative patching mm/execmem: Unify early execmem_cache behaviour x86/its: Align RETs in BHB clear sequence to avoid thunking x86/its: Add support for RSB stuffing mitigation x86/its: Add "vmexit" option to skip mitigation on some CPUs x86/its: Enable Indirect Target Selection mitigation x86/its: Add support for ITS-safe return thunk x86/its: Add support for ITS-safe indirect thunk x86/its: Enumerate Indirect Target Selection (ITS) bug Documentation: x86/bugs/its: Add ITS documentation