Kernel for Nothing Phone (1) (Spacewar)

Linux 5.4.302 kernel with KSU-SUSFS, NetHunter, NoMount, Droidspaces/Docker, and performance features.

Source History

Source	Contributions
William24hmar KSU-SUSFS	KSU syscall tamper, full SUSFS, CASS, BBR
William24hmar Nethunter	NetHunter Kconfig and driver configs
William24hmar module	Re:Kernel proc_ops, NF tables ranged sets, log silencing
William24hmar Test	Critical task boost, security fixes, TCP data-race annotations
William24hmar 20260807-Bak	TLB batched shootdown (arm64 memory management optimization)
William24hmar 20260805-bak	Binder transaction logging, RPM-SMD deadlock fix
William24hmar Nethunter	Full cone NAT, IPVS conntrack integration, xt_ipvs matcher
maxsteeel	NoMount path redirection subsystem (5.4 kernel integration)
ExTV DroidSpace	Droidspaces/Docker namespace and container configs

Features

• KernelSU with syscall tamper, Throne Tracker always threaded
• SUSFS full support: sus_path, sus_mount, sus_kstat, try_umount, spoof_uname, hide_symbols, open_redirect, sus_map
• NoMount path redirection (hooks in namei.c, d_path.c, readdir.c)
• CASS scheduler + BBR default TCP congestion control
• NetHunter: Wi-Fi monitor mode (mac80211, RTL8XXXU), WireGuard, HID gamepad (Dragonrise, Nintendo, Sony, Playstation, Pantherlord, Greenasia), USB networking, PPP/VPN, USB serial (PL2303, FTDI, CP210X)
• MPTCP multipath TCP support
• Re:Kernel - converts file_operations to proc_ops for /proc file compatibility
• Critical task boost - binder PI bypass, sync wakeup, workqueue priority, rcu_hurry for smoother UI under load
• Security fixes - CVE-2026-43499 (rtmutex UAF), binder UAF, af_unix UAF, ext4 LOGFLUSH
• TCP data-race annotations - prevents race conditions in tp counters and dsack
• NF tables ranged sets - multi-field firewall rule support
• Log silencing - USB, IPC, serial, media, display driver log spam reduction
• Droidspaces / Docker - container runtime support: Linux namespaces (PID, IPC, UTS, USER), cgroups (device, pids, net_prio), devtmpfs, bridge netfilter, NAT masquerade
• TLB batched shootdown - faster memory management on arm64
• RPM-SMD deadlock fix - prevents hang when waiting for RPM ACK
• LTO + O3 optimizations, WALT scheduler, F2FS
• Dead code elimination and power efficient workqueues
• Focaltech touchscreen DRM/FB fix (compile fix for KSU-SUSFS defconfig)

Build Config

TARGET_KERNEL_CONFIG := vendor/lahaina-qgki_defconfig vendor/debugfs.config

KernelSU source is fetched automatically on first build via voltage_Spacewar.mk.

Credits

• William24hmar - KSU-SUSFS and NetHunter kernel bases, module/Test branches
• backslashxx - KernelSU syscall tamper
• maxsteeel - NoMount subsystem
• simonpunk - SUSFS
• RealJohnGalt - Critical task boost + CASS scheduler
• Jann Horn - af_unix UAF fix
• Eric Dumazet - TCP data-race annotations
• Greg Kroah-Hartman - container_of cleanup
• ExTV - Droidspaces kernel reference for Spacewar
• ferstar - Full cone NAT, IPVS conntrack, xt_ipvs matcher

Build Fixes

• ANDROID_PARANOID_NETWORK=n — causes bootloop on QGKI 5.4, must stay enabled
• proc_create_single — 5.4 compat wrapper for Re:Kernel proc_ops conversion
• IPVS conntrack — duplicate symbol removal
• inode_lock_killable — helper function backports for 5.4
• kjson — Kconfig reference removal (not present on 5.4 QGKI)

Known Issues

Issue	Status
SYSVIPC / POSIX_MQUEUE	kABI patches cause bootloop on 5.4 QGKI (isolated, unfixed)
Device-as-Webcam (UVC)	QTI 5.4 kernel USB gadget limitation
Portrait mode (Nothing Camera)	Requires factory persist calibration from stock NOS

Branches

Branch	Description
voltage-nethunter	Main (KSU-SUSFS + NetHunter + Droidspaces + ~41 cherry-picks)
voltage	A16 production
voltage-lr	Long-running test

Maintainer

Ângelo Azevedo