A new XanMod Linux Kernel based on Linux Kernel 6.8.9 has been released. XanMod is a general-purpose Linux kernel distribution with custom settings and new features. The real-time version is recommended for critical runtime applications such as Linux gaming eSports, streaming, live productions and ultra-low latency enthusiasts.

Linux 6.8.9-xanmod1

XanMod is a general-purpose Linux kernel distribution with custom settings and new features. Built to provide a stable, responsive and smooth desktop experience.

The real-time version is recommended for critical runtime applications such as Linux gaming eSports, streaming, live productions and ultra-low latency enthusiasts.

Supports all recent 64-bit versions of Debian and Ubuntu-based systems.

Main Features

• Preemptive Full Tickless Kernel at 500Hz w/ Tuned CPU Core Scheduler.
• RCU Boost for better responsiveness and lower overall system latency.
• Block Layer w/ multi-threaded runqueue for high I/O throughput.
• Caching, Virtual Memory Manager and CPUFreq Governor improvements.
• BBR TCP Congestion Control + FQ-PIE Packet Scheduling and AQM Algorithm [5.8].
• ORC Unwinder for Kernel Stack Traces (debuginfo) implementation.
• Third-party patchset available: ZSTD kernel, initrd and modules support [5.8][5.6-rt], Full x86_64 FSGSBASE instructions [5.8], Clear Linux [partial], CK's Hrtimer Patchset [5.8][5.4], Wine / Proton Fsync, PCIe ACS Override, BMQ Process Scheduler [5.4 stock disabled], Aufs [5.4] and GCC graysky's.
• Real-time Linux kernel (PREEMPT_RT) build available [5.6-rt][5.4-rt].
• Generic kernel package for compatibility with most Debian & Ubuntu based distributions. Built on the latest GCC 10.2 and Binutils 2.35.
• GPLv2 license. Can be built for any distribution or purpose.

Install via Terminal

echo 'deb http://deb.xanmod.org releases main' | sudo tee /etc/apt/sources.list.d/xanmod-kernel.list && wget -qO - https://dl.xanmod.org/gpg.key | sudo apt-key add -

Then update and install:

sudo apt update && sudo apt install linux-xanmod

Reboot.

Meta packages available: linux-xanmod, linux-xanmod-edge, linux-xanmod-lts, linux-xanmod-rt-edge and linux-xanmod-rt.

To try without adding the repository

Download from Sourceforge and install:
https://sourceforge.net/projects/xanmod/files/

1. In terminal:

   sudo dpkg -i linux-image-*xanmod*.deb linux-headers-*xanmod*.deb

2. Reboot.

• Check it:

  cat /proc/version

* linux-firmware-image package is optional

• 083d679 Linux 6.8.9-xanmod1
• 1adf804 XANMOD: mm: Raise max_map_count default value
• e2e31bc Merge tag 'v6.8.9' into 6.8
• f3d6143 Linux 6.8.9
• 30bc279 Bluetooth: hci_sync: Fix UAF on hci_abort_conn_sync
• c4c9d6b Bluetooth: hci_sync: Fix UAF on create_le_conn_complete
• f1e50e5 Bluetooth: hci_sync: Fix UAF in hci_acl_create_conn_sync
• ebfe418 bounds: Use the right number of bits for power-of-two CONFIG_NR_CPUS
• 77db058 phy: qcom: qmp-combo: fix VCO div offset on v5_5nm and v6
• 357c64e i2c: smbus: fix NULL function pointer dereference
• bfd2fdb RISC-V: selftests: cbo: Ensure asm operands match constraints, take 2
• f50519b riscv: hwprobe: fix invalid sign extension for RISCV_HWPROBE_EXT_ZVFHMIN
• 06f27e6 sched/eevdf: Prevent vlag from going out of bounds in reweight_eevdf()
• 2fb2565 sched/eevdf: Fix miscalculation in reweight_entity() when se is not curr
• 5154b1e sched/eevdf: Always update V if se->on_rq when reweighting
• cf89c33 dt-bindings: eeprom: at24: Fix ST M24C64-D compatible schema
• 9827caa phy: ti: tusb1210: Resolve charger-det crash if charger psy is unregistered
• ea6628e riscv: Fix loading 64-bit NOMMU kernels past the start of RAM
• efdcfa5 riscv: Fix TASK_SIZE on 64-bit NOMMU
• 4753317 dmaengine: idxd: Fix oops during rmmod on single-CPU platforms
• c660be5 dma: xilinx_dpdma: Fix locking
• c9b732a dmaengine: idxd: Convert spinlock to mutex to lock evl workqueue
• 2232eb3 phy: qcom: m31: match requested regulator name with dt schema
• 11bfd44 phy: rockchip: naneng-combphy: Fix mux on rk3588
• a68840c phy: rockchip-snps-pcie3: fix clearing PHP_GRF_PCIESEL_CON bits
• 201a6c2 phy: rockchip-snps-pcie3: fix bifurcation on rk3588
• 1f9da54 phy: freescale: imx8m-pcie: fix pcie link-up instability
• 2d35d42 phy: marvell: a3700-comphy: Fix hardcoded array size
• 40406df phy: marvell: a3700-comphy: Fix out of bounds read
• 6321499 soundwire: amd: fix for wake interrupt handling for clockstop mode
• 999c13e idma64: Don't try to serve interrupts when device is powered off
• 41b0531 dmaengine: tegra186: Fix residual calculation
• 031cd85 dmaengine: owl: fix register access functions
• b0fdabc mm: zswap: fix shrinker NULL crash with cgroup_disable=memory
• 9fdcc5b mm: turn folio_test_hugetlb into a PageType
• b70dfdf phy: qcom: qmp-combo: Fix VCO div offset on v3
• 7eff3a5 phy: qcom: qmp-combo: Fix register base for QSERDES_DP_PHY_MODE
• dd22b34 firmware: qcom: uefisecapp: Fix memory related IO errors and crashes
• 68f4387 mtd: diskonchip: work around ubsan link failure
• e161023 mtd: limit OTP NVMEM cell parse to non-NAND devices
• da9e2f5 udp: preserve the connected status if only UDP cmsg
• 1802146 fbdev: fix incorrect address computation in deferred IO
• b417170 stackdepot: respect __GFP_NOLOCKDEP allocation flag
• 742f205 macsec: Detect if Rx skb is macsec-related for offloading devices that update md_dst
• 95eca99 macsec: Enable devices to advertise whether they update sk_buff md_dst during offloads
• 6a19cd2 net: b44: set pause params only when interface is up
• 5f7ee79 ethernet: Add helper for assigning packet type when dest address does not match device address
• 6510a0e net/mlx5e: Advertise mlx5 ethernet driver updates sk_buff md_dst for MACsec
• d734d8e ACPI: CPPC: Fix access width used for PCC registers
• 5cfdf78 ACPI: CPPC: Fix bit_offset shift in MASK_VAL() macro
• 6cb6b12 ACPI: CPPC: Use access_width over bit_width for system memory accesses
• 5b012f7 irqchip/gic-v3-its: Prevent double free on error
• 388c326 drm/amdkfd: Fix eviction fence handling
• 91933b2 drm/amdkfd: Fix rescheduling of restore worker
• 71ecc81 drm/amdgpu: Fix leak when GPU memory allocation fails
• f3fb728 drm/amdgpu/umsch: don't execute umsch test when GPU is in reset/suspend
• 9fcb0bb drm/amdgpu/pm: Remove gpu_od if it's an empty directory
• bd783af drm/atomic-helper: fix parameter order in drm_format_conv_state_copy() call
• bbfcd31 drm/amdgpu: Assign correct bits for SDMA HDP flush
• cc7e522 drm/amdgpu/sdma5.2: use legacy HDP flush for SDMA2/3
• 582ce5d dmaengine: xilinx: xdma: Fix synchronization issue
• f70e6b9 dmaengine: xilinx: xdma: Fix wrong offsets in the buffers addresses in dma descriptor
• 1b27647 dmaengine: Revert "dmaengine: pl330: issue_pending waits until WFP state"
• 019e95c arm64: dts: rockchip: enable internal pull-up for Q7_THRM# on RK3399 Puma
• e6d1dab arm64: dts: qcom: sm8450: Fix the msi-map entries
• 48ee8ae arm64: dts: qcom: sc8280xp: add missing PCIe minimum OPP
• 2e10596 LoongArch: Fix access error when read fault on a write-only VMA
• de357db LoongArch: Fix callchain parse error with kernel tracepoint events
• 6d8b56e eeprom: at24: fix memory corruption race condition
• fd8547e cpu: Re-enable CPU mitigations by default for !X86 architectures
• 4a6ff16 x86/tdx: Preserve shared bit on mprotect()
• fddc196 btrfs: fix information leak in btrfs_ioctl_logical_to_ino()
• a2488c7 btrfs: scrub: run relocation repair when/only needed
• ff2920b btrfs: fix wrong block_start calculation for btrfs_drop_extent_map_range()
• c7f9062 btrfs: fallback if compressed IO fails for ENOSPC
• fb49dee HID: i2c-hid: Revert to await reset ACK before reading report descriptor
• 418c557 HID: i2c-hid: remove I2C_HID_READ_PENDING flag to prevent lock-up
• 8248224 smb3: fix lock ordering potential deadlock in cifs_sync_mid_result
• 60ab245 smb3: missing lock when picking channel
• 3d550e0 smb: client: Fix struct_group() usage in __packed structs
• 9c9b32d mm/hugetlb: fix DEBUG_LOCKS_WARN_ON(1) when dissolve_free_hugetlb_folio()
• 035fde2 mm: support page_mapcount() on page_has_type() pages
• ef3643d mm: create FOLIO_FLAG_FALSE and FOLIO_TYPE_OPS macros
• 7778de9 mmc: sdhci-of-dwcmshc: th1520: Increase tuning loop count to 128
• f653b04 mmc: sdhci-msm: pervent access to suspended controller
• 538faab mm/hugetlb: fix missing hugetlb_lock for resv uncharge
• 9506035 mtd: rawnand: qcom: Fix broken OP_RESET_DEVICE command in qcom_misc_cmd_type_exec()
• bec4d4c Bluetooth: qca: fix NULL-deref on non-serdev setup
• b64092d Bluetooth: qca: fix NULL-deref on non-serdev suspend
• 8bc0ffb Bluetooth: btusb: Add Realtek RTL8852BE support ID 0x0bda:0x4853
• f53649e Bluetooth: Fix type of len in {l2cap,sco}_sock_getsockopt_old()
• c37eb5e rust: remove params from module macro example
• b1ba52c kbuild: rust: force alloc extern to allow "empty" Rust files
• 5f8bc89 kbuild: rust: remove unneeded @rustc_cfg to avoid ICE
• f94e59d rust: make mutually exclusive with CFI_CLANG
• 2ce4005 rust: init: remove impl Zeroable for Infallible
• 7e69585 rust: don't select CONSTRUCTORS
• 17b1d44 rust: kernel: require Send for Module implementations
• d09a4bf rust: phy: implement Send for Registration
• 585172f x86/cpu: Fix check for RDPKRU in __show_regs()
• 3b491b1 x86/CPU/AMD: Add models 0x10-0x1f to the Zen5 range
• 17f0ac3 selftests/seccomp: Handle EINVAL on unshare(CLONE_NEWPID)
• 63d90bf selftests/seccomp: Change the syscall used in KILL_THREAD test
• 3552b6b selftests/seccomp: user_notification_addfd check nextfd is available
• 0ac4016 drm/amdgpu: fix visible VRAM handling during faults
• 1ddc44a drm/amdgpu: add shared fdinfo stats
• 7a34381 drm: add drm_gem_object_is_shared_for_memory_stats() helper
• a770ff7 KVM: x86/pmu: Set enable bits for GP counters in PERF_GLOBAL_CTRL at "RESET"
• 257a409 KVM: x86/pmu: Zero out PMU metadata on AMD if PMU is disabled
• b19ca9e usb: xhci: correct return value in case of STS_HCE
• 68660ca xhci: move event processing for one interrupter to a separate function
• 0bbce52 Revert "drm/amd/display: fix USB-C flag update after enc10 feature init"
• 273552d drm/amd/display: Check DP Alt mode DPCS state via DMUB
• 5eaf23b netfs: Fix the pre-flush when appending to a file in writethrough mode
• 2f0346e af_unix: Suppress false-positive lockdep splat for spin_lock() in __unix_gc().
• 22a746f tls: fix lockless read of strp->msg_ready in ->poll
• f3e1cf6 dpll: fix dpll_pin_on_pin_register() for multiple parent pins
• 11cbb7a dpll: check that pin is registered in __dpll_pin_unregister()
• f5aa87a octeontx2-af: fix the double free in rvu_npc_freemem()
• 954d163 net: ethernet: ti: am65-cpts: Fix PTPv1 message type on TX packets
• de8631d ice: fix LAG and VF lock dependency in ice_reset_vf()
• d1039bf iavf: Fix TC config comparison with existing adapter TC config
• 792bd42 i40e: Report MFS in decimal base instead of hex
• 1594dac i40e: Do not use WQ_MEM_RECLAIM flag for workqueue
• b75a32c net: ti: icssg-prueth: Fix signedness bug in prueth_init_rx_chns()
• 4533613 net: phy: dp83869: Fix MII mode failure
• ca34c40 netfilter: nf_tables: honor table dormant flag from netdev release event path
• 5f9a326 ARM: dts: imx6ull-tarragon: fix USB over-current polarity
• 6a2657b eth: bnxt: fix counting packets discarded due to OOM and netpoll
• d72dd6f mlxsw: spectrum_acl_tcam: Fix memory leak when canceling rehash work
• af8b593 mlxsw: spectrum_acl_tcam: Fix incorrect list API usage
• 17e9e0b mlxsw: spectrum_acl_tcam: Fix warning during rehash
• b3fd51f mlxsw: spectrum_acl_tcam: Fix memory leak during rehash
• b2072b6 mlxsw: spectrum_acl_tcam: Rate limit error message
• a026870 mlxsw: spectrum_acl_tcam: Fix possible use-after-free during rehash
• b183b91 mlxsw: spectrum_acl_tcam: Fix possible use-after-free during activity update
• 087b57d mlxsw: spectrum_acl_tcam: Fix race during rehash delayed work
• 4d9c3e9 mlxsw: spectrum_acl_tcam: Fix race in region ID allocation
• bea0e8c mlxsw: Use refcount_t for reference counting
• edee075 net: openvswitch: Fix Use-After-Free in ovs_ct_exit
• e093b2a ipvs: Fix checksumming on GSO of SCTP packets
• 6e2205a Bluetooth: qca: set power_ctrl_enabled on NULL returned by gpiod_get_optional()
• 7548a23 Bluetooth: hci_sync: Using hci_cmd_sync_submit when removing Adv Monitor
• e20093c Bluetooth: btusb: mediatek: Fix double free of skb in coredump
• 4f116b8 Bluetooth: MGMT: Fix failing to MGMT_OP_ADD_UUID/MGMT_OP_REMOVE_UUID
• bd69360 Bluetooth: hci_event: Fix sending HCI_OP_READ_ENC_KEY_SIZE
• 4a814fa Bluetooth: btusb: Fix triggering coredump implementation for QCA
• aaf0628 Bluetooth: hci_sync: Use advertised PHYs on hci_le_ext_create_conn_sync
• 489efc9 Bluetooth: ISO: Reassemble PA data for bcast sink
• 5dd0bd2 Bluetooth: hci_sync: Attempt to dequeue connection attempt
• 357603f Bluetooth: hci_sync: Add helper functions to manipulate cmd_sync queue
• 7bb27cb Bluetooth: hci_conn: Fix UAF Write in __hci_acl_create_connection_sync
• d47904d Bluetooth: hci_conn: Always use sk_timeo as conn_timeout
• b3e3bf1 Bluetooth: Remove pending ACL connection attempts
• 22071f5 Bluetooth: hci_conn: Only do ACL connections sequentially
• 97286e3 Bluetooth: hci_event: Use HCI error defines instead of magic values
• 1ccfb1b drm/xe: call free_gsc_pkt only once on action add failure
• ec1ae5b drm/xe: Remove sysfs only once on action add failure
• 1030ca5 gpio: tegra186: Fix tegra186_gpio_is_accessible() check
• 2181a15 net: phy: mediatek-ge-soc: follow netdev LED trigger semantics
• cd957d1 net: gtp: Fix Use-After-Free in gtp_dellink
• ca4fb6c tcp: Fix Use-After-Free in tcp_ao_connect_init
• 2d03fbb net: usb: ax88179_178a: stop lying about skb->truesize
• c71ea35 ipv4: check for NULL idev in ip_route_use_hint()
• d2fa349 net: fix sk_memory_allocated_{add|sub} vs softirqs
• e830c80 net: make SK_MEMORY_PCPU_RESERV tunable
• 997c7ab tools: ynl: don't ignore errors in NLMSG_DONE messages
• 8d60c1a soc: mediatek: mtk-svs: Append "-thermal" to thermal zone names
• c42b073 ax25: Fix netdev refcount issue
• f1573c3 netfs: Fix writethrough-mode error handling
• 95a3032 NFC: trf7970a: disable all regulators on removal
• a217566 net: dsa: mv88e6xx: fix supported_interfaces setup in mv88e6250_phylink_get_caps()
• 5f02ece cxl/core: Fix potential payload size confusion in cxl_mem_get_poison()
• 0924910 bnxt_en: Fix error recovery for 5760X (P7) chips
• 2e34f9d bnxt_en: Fix the PCI-AER routines
• b018e90 bnxt_en: refactor reset close code
• f0f0cce bridge/br_netlink.c: no need to return void function
• 3e2979b icmp: prevent possible NULL dereferences from icmp_build_probe()
• 0658adb ARM: dts: microchip: at91-sama7g5ek: Replace regulator-suspend-voltage with the valid property
• 467c011 mlxsw: pci: Fix driver initialization with old firmware
• 5fffbb1 mlxsw: core_env: Fix driver initialization with old firmware
• 6f82b93 mlxsw: core: Unregister EMAD trap using FORWARD action
• 2389ad1 net: bcmasp: fix memory leak when bringing down interface
• 0d422ed vxlan: drop packets from invalid src-address
• 328c3f0 net: libwx: fix alloc msix vectors failed
• fa8c53a wifi: mac80211: fix unaligned le16 access
• dc7cc45 wifi: mac80211: remove link before AP
• 9327a5f wifi: mac80211_hwsim: init peer measurement result
• 37faebf drm/gma500: Remove lid code
• e56db24 wifi: iwlwifi: mvm: return uid from iwl_mvm_build_scan_cmd
• 8f5e4a7 wifi: iwlwifi: mvm: remove old PASN station when adding a new one
• eb6d11a wifi: mac80211: split mesh fast tx cache into local/proxied/forwarded
• bb2c251 wifi: mac80211: clean up assignments to pointer cache.
• 05a3dc1 ARC: [plat-hsdk]: Remove misplaced interrupt-cells property
• f5734c2 gpio: tangier: Use correct type for the IRQ chip data
• 6c6847d arm64: dts: qcom: sc8180x: Fix ss_phy_irq for secondary USB controller
• 119ca43 arm64: dts: qcom: x1e80100: Fix the compatible for cluster idle states
• 7da6e4d arm64: dts: qcom: Fix type of "wdog" IRQs for remoteprocs
• 0e9327c block: fix module reference leakage from bdev_open_by_dev error path
• c919f6e arm64: dts: rockchip: regulator for sd needs to be always on for BPI-R2Pro
• ec54a5a arm64: dts: rockchip: mark system power controller and fix typo on orangepi-5-plus
• 223ac44 arm64: dts: mediatek: mt2712: fix validation errors
• 5c21178 arm64: dts: mediatek: mt7986: prefix BPI-R3 cooling maps with "map-"
• da699fa arm64: dts: mediatek: mt7986: drop invalid thermal block clock
• 57cb519 arm64: dts: mediatek: mt7986: reorder nodes
• 669d1a4 arm64: dts: mediatek: mt7986: drop "#reset-cells" from Ethernet controller
• d6000d4 arm64: dts: mediatek: mt7986: drop invalid properties from ethsys
• b274235 arm64: dts: mediatek: mt7986: reorder properties
• 7d7247e arm64: dts: mediatek: mt7622: drop "reset-names" from thermal block
• 5c60ab0 arm64: dts: mediatek: mt7622: fix ethernet controller "compatible"
• b3cece5 arm64: dts: mediatek: mt7622: fix IR nodename
• 9477989 arm64: dts: mediatek: mt7622: fix clock controllers
• 041ed3d arm64: dts: mediatek: mt8183-kukui: Use default min voltage for MT6358
• 5b0ae66 arm64: dts: mediatek: mt8195-cherry: Update min voltage constraint for MT6315
• f5b0549 arm64: dts: mediatek: mt8192-asurada: Update min voltage constraint for MT6315
• 44cdbb1 arm64: dts: mediatek: cherry: Describe CPU supplies
• db6bf92 arm64: dts: mediatek: mt8195: Add missing gce-client-reg to mutex1
• 2a8517f arm64: dts: mediatek: mt8195: Add missing gce-client-reg to mutex
• da20007 arm64: dts: mediatek: mt8195: Add missing gce-client-reg to vpp/vdosys
• 75ac468 arm64: dts: mediatek: mt8192: Add missing gce-client-reg to mutex
• c57d4a8 arm64: dts: mediatek: mt8183: Add power-domains properity to mfgcfg
• 8821480 arm64: dts: rockchip: Remove unsupported node from the Pinebook Pro dts
• 19f446f arm64: dts: rockchip: Fix the i2c address of es8316 on Cool Pi CM5
• 5cadac4 arm64: dts: rockchip: enable internal pull-up on PCIE_WAKE# for RK3399 Puma
• f52ccfe arm64: dts: rockchip: fix alphabetical ordering RK3399 puma
• fe495e3 arm64: dts: rockchip: enable internal pull-up on Q7_USB_ID for RK3399 Puma
• 02cc03b arm64: dts: rockchip: set PHY address of MT7531 switch to 0x1f
• 7610ba7 HID: logitech-dj: allow mice to use all types of reports
• 44e0bcf HID: intel-ish-hid: ipc: Fix dev_err usage with uninitialized dev->devc
• eca7aaa cifs: reinstate original behavior again for forceuid/forcegid
• 9055500 smb: client: fix rename(2) regression against samba
• 89b9cd4 cifs: Fix reacquisition of volume cookie on still-live connection

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