A new XanMod Linux Kernel based on the latest Linux Kernel 5.12.13 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.

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

Linux 5.12.13-xanmod1

• 5a8d2af Linux 5.12.13-xanmod1
• 9b29cfc futex2: Add sysfs entry for syscall numbers
• 3205430 Merge tag 'v5.12.13' into 5.12
• 1463281 Linux 5.12.13
• fa8c413 usb: dwc3: core: fix kernel panic when do reboot
• afd8b0d usb: dwc3: debugfs: Add and remove endpoint dirs dynamically
• c4aedcd perf beauty: Update copy of linux/socket.h with the kernel sources
• 37699ae tools headers UAPI: Sync linux/in.h copy with the kernel sources
• a5bbae6 net: fec_ptp: add clock rate zero check
• 97bf4dc net: stmmac: disable clocks in stmmac_remove_config_dt()
• bcc0a8a mm/slub.c: include swab.h
• ce6e8be mm/slub: actually fix freelist pointer vs redzoning
• cf990cf mm/slub: fix redzoning for small allocations
• ca28a42 mm/slub: clarify verification reporting
• 3af098f mm/hugetlb: expand restore_reserve_on_error functionality
• d336921 mm/swap: fix pte_same_as_swp() not removing uffd-wp bit when compare
• 7db3a9e mm,hwpoison: fix race with hugetlb page allocation
• 25053a8 net: bridge: fix vlan tunnel dst refcnt when egressing
• abb02e0 net: bridge: fix vlan tunnel dst null pointer dereference
• b698249 net: ll_temac: Fix TX BD buffer overwrite
• e8afe05 net: ll_temac: Make sure to free skb when it is completely used
• ee85fdb drm/amdgpu/gfx9: fix the doorbell missing when in CGPG issue.
• df6cd61 drm/amdgpu/gfx10: enlarge CP_MEC_DOORBELL_RANGE_UPPER to cover full doorbell.
• 6fd67a6 cfg80211: avoid double free of PMSR request
• 34e2e11 cfg80211: make certificate generation more robust
• 2ffac7f mac80211: minstrel_ht: fix sample time check
• 077ad15 mac80211: move interface shutdown out of wiphy lock
• db40ccf cfg80211: shut down interfaces on failed resume
• 721b9c5 cfg80211: fix phy80211 symlink creation
• 5ea9123 mac80211: fix 'reset' debugfs locking
• 7b1b882 mac80211: Fix NULL ptr deref for injected rate info
• 8043903 mac80211: fix deadlock in AP/VLAN handling
• 789a43d dmaengine: pl330: fix wrong usage of spinlock flags in dma_cyclc
• 70fd2a6 crash_core, vmcoreinfo: append 'SECTION_SIZE_BITS' to vmcoreinfo
• f5644a1 Makefile: lto: Pass -warn-stack-size only on LLD < 13.0.0
• 74c3c34 powerpc/perf: Fix crash in perf_instruction_pointer() when ppmu is not set
• 6d427e1 x86/fpu: Reset state for all signal restore failures
• 002665d x86/fpu: Invalidate FPU state after a failed XRSTOR from a user buffer
• ec25ea1 x86/fpu: Prevent state corruption in __fpu__restore_sig()
• 8111488 x86/pkru: Write hardware init value to PKRU when xstate is init
• b7a05ab x86/ioremap: Map EFI-reserved memory as encrypted for SEV
• e85c311 x86/process: Check PF_KTHREAD and not current->mm for kernel threads
• 14225df x86/mm: Avoid truncating memblocks for SGX memory
• f996076 ARCv2: save ABI registers across signal handling
• 6c800b5 s390/ap: Fix hanging ioctl caused by wrong msg counter
• 99de738 s390/mcck: fix calculation of SIE critical section size
• a4edc50 KVM: X86: Fix x86_emulator slab cache leak
• c87dc2e KVM: x86/mmu: Calculate and check "full" mmu_role for nested MMU
• df9a40c KVM: x86: Immediately reset the MMU context when the SMM flag is cleared
• 54bab5c s390/mcck: fix invalid KVM guest condition check
• 47dbe49 btrfs: zoned: fix negative space_info->bytes_readonly
• fb4af05 PCI: Work around Huawei Intelligent NIC VF FLR erratum
• 4879d99 PCI: Add ACS quirk for Broadcom BCM57414 NIC
• 3d213a4 PCI: aardvark: Fix kernel panic during PIO transfer
• 74c1ea1 PCI: Mark AMD Navi14 GPU ATS as broken
• 02bbc04 PCI: Mark some NVIDIA GPUs to avoid bus reset
• 39fc441 PCI: Mark TI C667X to avoid bus reset
• c89a2fd tracing: Do no increment trace_clock_global() by one
• 5b5b8be tracing: Do not stop recording comms if the trace file is being read
• 0eee3ce tracing: Do not stop recording cmdlines when tracing is off
• c12f71e usb: chipidea: imx: Fix Battery Charger 1.2 CDP detection
• 955b2bd usb: core: hub: Disable autosuspend for Cypress CY7C65632
• d0760a4 can: mcba_usb: fix memory leak in mcba_usb
• 1071065 can: j1939: fix Use-after-Free, hold skb ref while in use
• e899129 can: bcm/raw/isotp: use per module netdevice notifier
• dc6415c can: bcm: fix infoleak in struct bcm_msg_head
• 68a1936 bpf: Do not mark insn as seen under speculative path verification
• 408a495 bpf: Inherit expanded/patched seen count from old aux data
• 99c028f perf metricgroup: Return error code from metricgroup__add_metric_sys_event_iter()
• b390fbe perf metricgroup: Fix find_evsel_group() event selector
• 8a484ee irqchip/gic-v3: Workaround inconsistent PMR setting on NMI entry
• c718456 mm: relocate 'write_protect_seq' in struct mm_struct
• 68c5ac8 riscv: code patching only works on !XIP_KERNEL
• 4a737cc hwmon: (scpi-hwmon) shows the negative temperature properly
• 7a01fdd radeon: use memcpy_to/fromio for UVD fw upload
• becfe76 ASoC: qcom: lpass-cpu: Fix pop noise during audio capture begin
• 6b93573 drm/sun4i: dw-hdmi: Make HDMI PHY into a platform device
• 7e7d112 pinctrl: ralink: rt2880: avoid to error in calls is pin is already enabled
• f9ae175 ASoC: rt5682: Fix the fast discharge for headset unplugging in soundwire mode
• dc68f0c regulator: rt4801: Fix NULL pointer dereference if priv->enable_gpios is NULL
• 600831a spi: stm32-qspi: Always wait BUSY bit to be cleared in stm32_qspi_wait_cmd()
• b4c0a75 regulator: hi6421v600: Fix .vsel_mask setting
• aa2b159 ASoC: tas2562: Fix TDM_CFG0_SAMPRATE values
• f292028 sched/pelt: Ensure that *_sum is always synced with *_avg
• 6d655c2 spi: spi-zynq-qspi: Fix some wrong goto jumps & missing error code
• 6e47a81 regulator: rtmv20: Fix to make regcache value first reading back from HW
• fccd7c3 regulator: mt6315: Fix function prototype for mt6315_map_mode
• e1ffb12 ASoC: fsl-asoc-card: Set .owner attribute when registering card.
• 6472955 phy: phy-mtk-tphy: Fix some resource leaks in mtk_phy_init()
• b437e02 ASoC: rt5659: Fix the lost powers for the HDA header
• f3a4ed2 platform/x86: thinkpad_acpi: Add X1 Carbon Gen 9 second fan support
• 83581c5 regulator: bd70528: Fix off-by-one for buck123 .n_voltages setting
• 76f0004 regulator: cros-ec: Fix error code in dev_err message
• d11d79e net: ethernet: fix potential use-after-free in ec_bhf_remove
• 9069a7e icmp: don't send out ICMP messages with a source address of 0.0.0.0
• bddd209 bnxt_en: Call bnxt_ethtool_free() in bnxt_init_one() error path
• 0490cea bnxt_en: Fix TQM fastpath ring backing store computation
• dc5ebaf bnxt_en: Rediscover PHY capabilities after firmware reset
• 6b3496e cxgb4: fix wrong shift.
• b4f7a9f net: cdc_eem: fix tx fixup skb leak
• f4de2b4 net: hamradio: fix memory leak in mkiss_close
• fc2fd42 be2net: Fix an error handling path in 'be_probe()'
• d7aeb00 net/mlx5: Reset mkey index on creation
• a537892 net/mlx5e: Don't create devices during unload flow
• 7fac9dc net/mlx5: DR, Fix STEv1 incorrect L3 decapsulation padding
• 0069be2 net/mlx5: SF_DEV, remove SF device on invalid state
• c08fd2d net/mlx5: E-Switch, Allow setting GUID for host PF vport
• 648a07c net/mlx5: E-Switch, Read PF mac address
• 1666c18 net/mlx5: Check that driver was probed prior attaching the device
• e384aea net/mlx5: Fix error path for set HCA defaults
• 3cbfeea net/af_unix: fix a data-race in unix_dgram_sendmsg / unix_release_sock
• 77de6ee net: ipv4: fix memory leak in ip_mc_add1_src
• 6a993bc net: fec_ptp: fix issue caused by refactor the fec_devtype
• 14616c3 net: usb: fix possible use-after-free in smsc75xx_bind
• 5e006cd lantiq: net: fix duplicated skb in rx descriptor ring
• 62e2f20 net: cdc_ncm: switch to eth%d interface naming
• 220c3c3 ptp: improve max_adj check against unreasonable values
• 7d14c66 net: mhi_net: Update the transmit handler prototype
• 4a99047 bpf: Fix leakage under speculation on mispredicted branches
• 19892ab net: qrtr: fix OOB Read in qrtr_endpoint_post
• 55c6d93 ipv4: Fix device used for dst_alloc with local routes
• 490e879 cxgb4: fix wrong ethtool n-tuple rule lookup
• 45988ca netxen_nic: Fix an error handling path in 'netxen_nic_probe()'
• ca9c08d qlcnic: Fix an error handling path in 'qlcnic_probe()'
• cfc7f0e ethtool: strset: fix message length calculation
• 4556e8e net: qualcomm: rmnet: don't over-count statistics
• 5816edd net: make get_net_ns return error if NET_NS is disabled
• fd99cac net: stmmac: dwmac1000: Fix extended MAC address registers definition
• decb9c3 cxgb4: halt chip before flashing PHY firmware image
• 2e4829c cxgb4: fix sleep in atomic when flashing PHY firmware
• 291c5e3 cxgb4: fix endianness when flashing boot image
• 9e029da alx: Fix an error handling path in 'alx_probe()'
• 27ef25c mptcp: fix soft lookup in subflow_error_report()
• 4dd7ed3 selftests: mptcp: enable syncookie only in absence of reorders
• 083e54e mptcp: do not warn on bad input from the network
• 59f4b11 mptcp: wake-up readers only for in sequence data
• 6fb5ea5 mptcp: try harder to borrow memory from subflow under pressure
• 3371392 sch_cake: Fix out of bounds when parsing TCP options and header
• 76e02b8 mptcp: Fix out of bounds when parsing TCP options
• f648089 netfilter: synproxy: Fix out of bounds when parsing TCP options
• 56c8b83 skbuff: fix incorrect msg_zerocopy copy notifications
• ed22996 net/mlx5e: Block offload of outer header csum for GRE tunnel
• b38c57a net/mlx5e: Block offload of outer header csum for UDP tunnels
• af452c9 Revert "net/mlx5: Arm only EQs with EQEs"
• 574a9f2 net/mlx5: DR, Don't use SW steering when RoCE is not supported
• 6a84c6d net/mlx5: Consider RoCE cap before init RDMA resources
• b374c13 net/mlx5e: Fix page reclaim for dead peer hairpin
• 462abae net/mlx5e: Remove dependency in IPsec initialization flows
• b6447b7 net/mlx5e: Fix use-after-free of encap entry in neigh update handler
• 7c7dd4e net/sched: act_ct: handle DNAT tuple collision
• 69a54b4 rtnetlink: Fix regression in bridge VLAN configuration
• 65310b0 udp: fix race between close() and udp_abort()
• c4c9de2 ice: parameterize functions responsible for Tx ring management
• 57b2b26 ice: add ndo_bpf callback for safe mode netdev ops
• b499e67 netfilter: nft_fib_ipv6: skip ipv6 packets from any to link-local
• a1f6740 netfilter: nf_tables: initialize set before expression setup
• 2e44117 net: lantiq: disable interrupt before sheduling NAPI
• 2b66c01 net: ena: fix DMA mapping function issues in XDP
• b0a744f net: dsa: felix: re-enable TX flow control in ocelot_port_flush()
• b25b60d net: rds: fix memory leak in rds_recvmsg
• 2f032eb vrf: fix maximum MTU
• 0ffb460 net: ipv4: fix memory leak in netlbl_cipsov4_add_std
• c54a64e libbpf: Fixes incorrect rx_ring_setup_done
• ffc6be4 mlxsw: core: Set thermal zone polling delay argument to real value at init
• f313da6 mlxsw: reg: Spectrum-3: Enforce lowest max-shaper burst size of 11
• d1b949c mac80211: fix skb length check in ieee80211_scan_rx()
• faca470 staging: rtl8723bs: fix monitor netdev register/unregister
• 2eb4e0b batman-adv: Avoid WARN_ON timing related checks
• 476de3f fanotify: fix copy_event_to_user() fid error clean up
• a2aff09 kvm: LAPIC: Restore guard to prevent illegal APIC register access
• 28788dc mm/memory-failure: make sure wait for page writeback in memory_failure
• 43ea653 afs: Fix an IS_ERR() vs NULL check
• 6a5fadc dmaengine: stedma40: add missing iounmap() on error in d40_probe()
• c8e0794 dmaengine: SF_PDMA depends on HAS_IOMEM
• 55b1c32 dmaengine: QCOM_HIDMA_MGMT depends on HAS_IOMEM
• a215987 dmaengine: ALTERA_MSGDMA depends on HAS_IOMEM
• b476c74 dmaengine: xilinx: dpdma: initialize registers before request_irq
• becd2ff dmaengine: fsl-dpaa2-qdma: Fix error return code in two functions
• 6b82f69 dmaengine: idxd: add missing dsa driver unregister
• c1ec6d4 dmaengine: idxd: add engine 'struct device' missing bus type assignment

Homepage
Download Linux 5.12.13-xanmod1 source from GitHub