addpkg(root): crosvm, addpkg(main): libandroid-fexecve

[truboxl]

Close #19194

Untested

[robertkirkman]

I tried to test it with this command on one of my devices, and I saw this error first:

1|:/data/data/com.termux/files/home # crosvm run vmlinuz                                                                                
[2026-05-17T06:38:07.435853810+00:00 INFO  crosvm::crosvm::sys::linux] crosvm entering multiprocess mode
[2026-05-17T06:38:07.467433820+00:00 ERROR crosvm] exiting with error 1: "/var/empty" is not a directory, cannot create jail

After I tried to bypass that error, I saw this:

Program received signal SIGABRT, Aborted.
0x00007ffff56bc69f in abort () from /apex/com.android.runtime/lib64/bionic/libc.so
(gdb) bt
#0  0x00007ffff56bc69f in abort () from /apex/com.android.runtime/lib64/bionic/libc.so
#1  0x000055555700037a in do_fatal_log (priority=priority@entry=3, 
    format=format@entry=0x5555558e3245 "libminijail[%d]: clone(CLONE_NEWPID | ...) failed: %m")
    at /data/data/com.termux/files/home/.termux-build/crosvm/src/third_party/minijail/util.c:173
#2  0x0000555556ffb388 in minijail_run_internal (j=0x7fff0d4a9850, config=config@entry=0x7ffffffdb820, 
    state_out=state_out@entry=0x7ffffffdb7b0)
    at /data/data/com.termux/files/home/.termux-build/crosvm/src/third_party/minijail/libminijail.c:3829
#3  0x0000555556ffa2a2 in minijail_run_config_internal (j=0x53c1, config=0x53c1, config@entry=0x7ffffffdb820)
    at /data/data/com.termux/files/home/.termux-build/crosvm/src/third_party/minijail/libminijail.c:4135
#4  0x0000555556ffa860 in minijail_fork (j=0x53c1)
    at /data/data/com.termux/files/home/.termux-build/crosvm/src/third_party/minijail/libminijail.c:3689
#5  0x0000555556feb146 in minijail::Minijail::fork_remap (self=0x7ffffffdc670, inheritable_fds=...)
    at third_party/minijail/rust/minijail/src/lib.rs:1023
#6  0x0000555556febf8d in minijail::Minijail::fork (self=0x7ffffffdc670, inheritable_fds=...)
    at third_party/minijail/rust/minijail/src/lib.rs:979
#7  0x0000555556237360 in jail::fork::fork_process<devices::proxy::{impl#1}::new::{closure_env#0}<alloc::boxed::Box<dyn devices::pci::pci_device::PciDevice, alloc::alloc::Global>>> (jail=..., keep_rds=..., debug_label=..., post_fork_cb=...) at jail/src/fork.rs:101
#8  0x00005555561e69f0 in devices::proxy::ChildProcIntf::new<alloc::boxed::Box<dyn devices::pci::pci_device::PciDevice, alloc::alloc::Global>> (device=..., jail=..., keep_rds=...) at devices/src/proxy.rs:375
#9  0x00005555561e4525 in devices::proxy::ProxyDevice::new<alloc::boxed::Box<dyn devices::pci::pci_device::PciDevice, alloc::alloc::Global>> (device=..., jail=..., keep_rds=...) at devices/src/proxy.rs:452
#10 0x000055555622ed7f in arch::generate_pci_root (devices=..., irq_chip=..., mmio_bus=..., mmio_base=..., mmio_register_bit_num=12, 
    io_bus=..., resources=0x7ffffffedbd0, vm=..., max_irqs=4, vcfg_base=...) at arch/src/lib.rs:1257
#11 0x000055555616fff6 in x86_64::{impl#2}::build_vm (components=..., arch_memory_layout=0x7fffffff3310, vm_evt_wrtube=0x7ffffffedb98, 
    system_allocator=0x7ffffffedbd0, serial_parameters=0x7fffffff4138, serial_jail=..., battery=..., vm=..., ramoops_region=..., 
    devs=..., irq_chip=..., vcpu_ids=0x7fffffff0e80, dump_device_tree_blob=..., debugcon_jail=..., pflash_jail=..., fw_cfg_jail=..., 
    guest_suspended_cvar=..., device_tree_overlays=..., _fdt_position=..., _no_pmu=false) at x86_64/src/lib.rs:1113
#12 0x0000555555f3689b in crosvm::crosvm::sys::linux::run_vm (cfg=..., components=..., arch_memory_layout=0x7fffffff3310, vm=..., 
    irq_chip=..., ioapic_host_tube=...) at src/crosvm/sys/linux.rs:2487
#13 0x0000555555f3a263 in crosvm::crosvm::sys::linux::run_kvm (device_path=..., cfg=..., components=...) at src/crosvm/sys/linux.rs:2006
#14 0x0000555555f14622 in crosvm::crosvm::sys::linux::run_config (cfg=...) at src/crosvm/sys/linux.rs:2133
#15 0x0000555555e47a1a in crosvm::run_vm (cmd=..., log_config=...) at src/main.rs:175
#16 0x0000555556099a5d in crosvm::crosvm_main<std::env::Args> (args=...) at src/main.rs:804
#17 0x0000555555e46ec5 in crosvm::main () at src/main.rs:924

I can't confirm whether the issues I'm seeing are because of this crosvm, or because of a misconfiguration of my device or the commands I'm trying to use. Unfortunately I have never tried to use virtual machines on Android before.

I have used crosvm and QEMU/KVM on desktop PC and they work for me there, but using standard builds on GNU/Linux on PC, which is already set up to be intended for running VMs.

This is what I see from the same command on a GNU/Linux device with GNU/Linux crosvm:

tacokoneko@CORSAIR /mnt/Storage2/code2/images2/crosvm $ target/debug/crosvm run vmlinuz 
syslog init failed: guess of fd for syslog connection was invalid
syslog init failed: guess of fd for syslog connection was invalid
[2026-05-17T08:23:30.980758091+00:00 INFO  crosvm::crosvm::sys::linux] crosvm entering multiprocess mode
[2026-05-17T08:23:30.994997395+00:00 INFO  devices::sys::linux::acpi] Listening on acpi_mc_group of acpi_event family
[2026-05-17T08:23:31.005760496+00:00 INFO  x86_64] Loaded bzImage kernel
[    0.193933] /dev/root: Can't open blockdev
[    0.195141] List of all bdev filesystems:
[    0.196304]  ext3
[    0.196305]  ext2
[    0.197026]  ext4
[    0.197726]  fuseblk
[    0.198404]  btrfs
[    0.199136] 
[    0.200622] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
[    0.202802] CPU: 0 UID: 0 PID: 1 Comm: swapper/0 Not tainted 7.0.8-arch1-1 #1 PREEMPT(full)  c2ec282795e9f47cb8bc86f69b5629c84ae881f4
[    0.205914] Hardware name: ChromiumOS crosvm, BIOS 0 
[    0.207335] Call Trace:
[    0.208108]  <TASK>
[    0.208806]  dump_stack_lvl+0x5d/0x80
[    0.209892]  vpanic+0x20a/0x410
[    0.210858]  panic+0x6b/0x70
[    0.211768]  mount_root_generic+0x1d0/0x280
[    0.212957]  prepare_namespace+0x1cb/0x260
[    0.214128]  kernel_init_freeable+0x295/0x2c0
[    0.215569]  ? __pfx_kernel_init+0x10/0x10
[    0.216803]  kernel_init+0x1a/0x140
[    0.217847]  ret_from_fork+0x2bc/0x350
[    0.218945]  ? __pfx_kernel_init+0x10/0x10
[    0.220126]  ret_from_fork_asm+0x1a/0x30
[    0.221277]  </TASK>
[    0.222027] Kernel Offset: 0x1600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
[2026-05-17T08:23:31.499749978+00:00 INFO  crosvm::crosvm::sys::linux] vcpu requested reset
[2026-05-17T08:23:31.574950913+00:00 INFO  crosvm] exiting with success
tacokoneko@CORSAIR /mnt/Storage2/code2/images2/crosvm $ 

if a kernel is booted with no userspace it will perform a short operation and exit, which is printing these messages, so the behavior shown on GNU/Linux is expected.

[robertkirkman]

termux-info for the device which I tried to use:

Termux Variables:
TERMUX_APP_PACKAGE_MANAGER=apt
TERMUX_APP__APK_FILE=/data/app/~~TBu5la-kb2V3qCWzKmKHtA==/com.termux-lDhB_P0FWH1mF-dID78c-g==/base.apk
TERMUX_APP__APK_RELEASE=F_DROID
TERMUX_APP__APP_VERSION_CODE=1022
TERMUX_APP__APP_VERSION_NAME=0.119.0-beta.3
TERMUX_APP__DATA_DIR=/data/user/0/com.termux
TERMUX_APP__IS_DEBUGGABLE_BUILD=false
TERMUX_APP__IS_INSTALLED_ON_EXTERNAL_STORAGE=false
TERMUX_APP__LEGACY_DATA_DIR=/data/data/com.termux
TERMUX_APP__PACKAGE_NAME=com.termux
TERMUX_APP__PID=3235
TERMUX_APP__SE_FILE_CONTEXT=u:object_r:app_data_file:s0:c42,c257,c512,c768
TERMUX_APP__SE_INFO=default:targetSdkVersion=28:complete
TERMUX_APP__TARGET_SDK=28
TERMUX_VERSION=0.119.0-beta.3
TERMUX__APPS_DIR=/data/user/0/com.termux/termux/apps
TERMUX__HOME=/data/data/com.termux/files/home
TERMUX__PREFIX=/data/data/com.termux/files/usr
TERMUX__ROOTFS_DIR=/data/data/com.termux/files
TERMUX__SE_PROCESS_CONTEXT=u:r:untrusted_app_27:s0:c42,c257,c512,c768
TERMUX__UID=10298
TERMUX__USER_ID=0
Packages CPU architecture:
x86_64
Subscribed repositories:
# sources.list
deb https://packages-cf.termux.dev/apt/termux-main stable main
# tur-repo (sources.list.d/tur.list)
deb https://tur.kcubeterm.com tur-packages tur tur-on-device tur-continuous
# root-repo (sources.list.d/root.list)
deb https://packages-cf.termux.dev/apt/termux-root root stable
# x11-repo (sources.list.d/x11.list)
deb https://packages-cf.termux.dev/apt/termux-x11 x11 main
Updatable packages:
All packages up to date
termux-tools version:
1.45.0
Android version:
13
Kernel build information:
Linux localhost 6.1.112-gloria-xanmod1 #1 SMP PREEMPT_DYNAMIC Fri Oct 11 19:39:04 EDT 2024 x86_64 Android
Device manufacturer:
Dell Inc.
Device model:
08NPPY
Supported ABIs:
SUPPORTED_ABIS: x86_64,arm64-v8a,x86,armeabi-v7a,armeabi
SUPPORTED_32_BIT_ABIS: x86,armeabi-v7a,armeabi
SUPPORTED_64_BIT_ABIS: x86_64,arm64-v8a
LD Variables:
LD_LIBRARY_PATH=
LD_PRELOAD=/data/data/com.termux/files/usr/lib/libtermux-exec-ld-preload.so

it is rooted and logs with # indicate use of root