Hello, I am using Archlinux current with: - kernel 5.10.27-1-lts - virt-builder 1.42.0 - QEMU emulator version 5.2.0 Everything was working fine like 3 days ago. As you can see last time I updated my kernel: [2021-03-31T09:10:53+0200] [ALPM] upgraded linux-lts (5.10.26-1 -> 5.10.27-1) When I am trying to build ubuntu 18.04 image with virt-builder I am getting the following error now (with export LIBGUESTFS_DEBUG=1 LIBGUESTFS_TRACE=1): [ 1.3] Downloading: http://builder.libguestfs.org/ubuntu-18.04.xz libguestfs: trace: set_verbose true libguestfs: trace: set_verbose = 0 libguestfs: create: flags = 0, handle = 0x563eb1046ad0, program = virt-builder libguestfs: trace: get_cachedir libguestfs: trace: get_cachedir = "/var/tmp" [ 1.8] Planning how to build this image [ 1.8] Uncompressing [ 10.4] Resizing (using virt-resize) to expand the disk to 64.0G libguestfs: trace: set_verbose true libguestfs: trace: set_verbose = 0 libguestfs: create: flags = 0, handle = 0x563eb1015550, program = virt-builder libguestfs: trace: disk_create "k8smaster1.qcow2" "qcow2" 68719476736 "preallocation:metadata" libguestfs: command: run: qemu-img libguestfs: command: run: \ create libguestfs: command: run: \ -f qcow2 libguestfs: command: run: \ -o preallocation=metadata libguestfs: command: run: \ ./k8smaster1.qcow2 libguestfs: command: run: \ 68719476736 Formatting './k8smaster1.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off preallocation=metadata compression_type=zlib size=68719476736 lazy_refcounts=off refcount_bits=16 libguestfs: trace: disk_create = 0 libguestfs: trace: set_verbose true libguestfs: trace: set_verbose = 0 libguestfs: create: flags = 0, handle = 0x558510868410, program = virt-resize libguestfs: trace: add_drive "/var/tmp/vb99ac3c.img" "readonly:true" "format:raw" "protocol:file" libguestfs: creating COW overlay to protect original drive content libguestfs: trace: get_tmpdir libguestfs: trace: get_tmpdir = "/tmp" libguestfs: trace: disk_create "/tmp/libguestfsfW3FUV/overlay1.qcow2" "qcow2" -1 "backingfile:/var/tmp/vb99ac3c.img" "backingformat:raw" libguestfs: command: run: qemu-img libguestfs: command: run: \ create libguestfs: command: run: \ -f qcow2 libguestfs: command: run: \ -o backing_file=/var/tmp/vb99ac3c.img,backing_fmt=raw libguestfs: command: run: \ /tmp/libguestfsfW3FUV/overlay1.qcow2 Formatting '/tmp/libguestfsfW3FUV/overlay1.qcow2', fmt=qcow2 cluster_size=65536 extended_l2=off compression_type=zlib size=6442450944 backing_file=/var/tmp/vb99ac3c.img backing_fmt=raw lazy_refcounts=off refcount_bits=16 libguestfs: trace: disk_create = 0 libguestfs: trace: add_drive = 0 libguestfs: trace: add_drive "k8smaster1.qcow2" "readonly:false" "format:qcow2" "protocol:file" "cachemode:unsafe" libguestfs: trace: add_drive = 0 libguestfs: trace: launch libguestfs: trace: max_disks libguestfs: trace: max_disks = 255 libguestfs: trace: version libguestfs: trace: version = <struct guestfs_version = major: 1, minor: 42, release: 0, extra: , > libguestfs: trace: get_backend libguestfs: trace: get_backend = "direct" libguestfs: launch: program=virt-resize libguestfs: launch: version=1.42.0 libguestfs: launch: backend registered: unix libguestfs: launch: backend registered: uml libguestfs: launch: backend registered: libvirt libguestfs: launch: backend registered: direct libguestfs: launch: backend=direct libguestfs: launch: tmpdir=/tmp/libguestfsfW3FUV libguestfs: launch: umask=0022 libguestfs: launch: euid=0 libguestfs: trace: get_cachedir libguestfs: trace: get_cachedir = "/var/tmp" libguestfs: begin building supermin appliance libguestfs: run supermin libguestfs: command: run: /usr/bin/supermin libguestfs: command: run: \ --build libguestfs: command: run: \ --verbose libguestfs: command: run: \ --if-newer libguestfs: command: run: \ --lock /var/tmp/.guestfs-0/lock libguestfs: command: run: \ --copy-kernel libguestfs: command: run: \ -f ext2 libguestfs: command: run: \ --host-cpu x86_64 libguestfs: command: run: \ /usr/lib/guestfs/supermin.d libguestfs: command: run: \ -o /var/tmp/.guestfs-0/appliance.d supermin: version: 5.2.0 supermin: package handler: arch/pacman supermin: acquiring lock on /var/tmp/.guestfs-0/lock supermin: if-newer: output does not need rebuilding libguestfs: finished building supermin appliance libguestfs: begin testing qemu features libguestfs: trace: get_cachedir libguestfs: trace: get_cachedir = "/var/tmp" libguestfs: checking for previously cached test results of /usr/bin/qemu-system-x86_64, in /var/tmp/.guestfs-0 libguestfs: loading previously cached test results libguestfs: qemu version: 5.2 libguestfs: qemu mandatory locking: yes libguestfs: qemu KVM: enabled libguestfs: trace: get_backend_setting "force_tcg" libguestfs: trace: get_backend_setting = NULL (error) libguestfs: trace: get_sockdir libguestfs: trace: get_sockdir = "/tmp" libguestfs: finished testing qemu features libguestfs: trace: get_backend_setting "gdb" libguestfs: trace: get_backend_setting = NULL (error) libguestfs: command: run: file libguestfs: command: run: \ -- /var/tmp/.guestfs-0/appliance.d/root /usr/bin/qemu-system-x86_64 \ -global virtio-blk-pci.scsi=off \ -no-user-config \ -enable-fips \ -nodefaults \ -display none \ -machine accel=kvm:tcg \ -cpu host \ -m 768 \ -no-reboot \ -rtc driftfix=slew \ -no-hpet \ -global kvm-pit.lost_tick_policy=discard \ -kernel /var/tmp/.guestfs-0/appliance.d/kernel \ -initrd /var/tmp/.guestfs-0/appliance.d/initrd \ -object rng-random,filename=/dev/urandom,id=rng0 \ -device virtio-rng-pci,rng=rng0 \ -device virtio-scsi-pci,id=scsi \ -drive file.file.filename=/tmp/libguestfsfW3FUV/overlay1.qcow2,file.driver=qcow2,file.backing.file.locking=off,cache=unsafe,id=hd0,if=none \ -device scsi-hd,drive=hd0 \ -drive file=/tmp/k8smaster1.qcow2,cache=unsafe,format=qcow2,id=hd1,if=none \ -device scsi-hd,drive=hd1 \ -drive file=/var/tmp/.guestfs-0/appliance.d/root,snapshot=on,id=appliance,cache=unsafe,if=none,format=raw \ -device scsi-hd,drive=appliance \ -device virtio-serial-pci \ -serial stdio \ -device sga \ -chardev socket,path=/tmp/libguestfsxcJzEf/guestfsd.sock,id=channel0 \ -device virtserialport,chardev=channel0,name=org.libguestfs.channel.0 \ -append "panic=1 console=ttyS0 edd=off udevtimeout=6000 udev.event-timeout=6000 no_timer_check printk.time=1 cgroup_disable=memory usbcore.nousb cryptomgr.notests tsc=reliable 8250.nr_uarts=1 root=UUID=852582a6-3f81-41e9-ffffa900-b62fa2d50325 selinux=0 guestfs_verbose=1 TERM=xterm-256color" WARNING: Image format was not specified for '/tmp/libguestfsfW3FUV/overlay1.qcow2' and probing guessed raw. Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted. Specify the 'raw' format explicitly to remove the restrictions. libguestfs: responding to serial console Device Status Report \x1b[1;256r\x1b[256;256H\x1b[6n Google, Inc. Serial Graphics Adapter 04/27/17 SGABIOS $Id$ (pbonzini@donizetti) gio 27 apr 2017, 08.36.57, UTC Term: 80x24 4 0 SeaBIOS (version ArchLinux 1.14.0-1) Booting from ROM... \x1b[2J[ 0.094817] usbserial: usb_serial_init - registering generic driver failed [ 0.095591] usbserial: usb_serial_init - returning with error -19 supermin: mounting /proc supermin: ext2 mini initrd starting up: 5.2.0 glibc supermin: cmdline: panic=1 console=ttyS0 edd=off udevtimeout=6000 udev.event-timeout=6000 no_timer_check printk.time=1 cgroup_disable=memory usbcore.nousb cryptomgr.notests tsc=reliable 8250.nr_uarts=1 root=UUID=852582a6-3f81-41e9-ffffa900-b62fa2d50325 selinux=0 guestfs_verbose=1 TERM=xterm-256color supermin: uptime: 0.15 0.02 supermin: mounting /sys supermin: internal insmod crc32-pclmul.ko supermin: internal insmod crc32c-intel.ko supermin: internal insmod crct10dif-pclmul.ko supermin: internal insmod crc32_generic.ko supermin: internal insmod crc32c_generic.ko supermin: internal insmod nfit.ko supermin: internal insmod ata_piix.ko ^H^H^Hsupermin: internal insmod virtio_blk.ko supermin: internal insmod rng-core.ko supermin: internal insmod virtio-rng.ko supermin: internal insmod virtio_console.ko supermin: internal insmod crypto_engine.ko supermin: internal insmod virtio_crypto.ko supermin: internal insmod failover.ko supermin: internal insmod net_failover.ko supermin: internal insmod virtio_net.ko supermin: internal insmod nd_btt.ko supermin: internal insmod nd_pmem.ko supermin: internal insmod nd_virtio.ko supermin: internal insmod virtio_pmem.ko supermin: internal insmod rpmsg_core.ko supermin: internal insmod virtio_rpmsg_bus.ko supermin: internal insmod virtio_scsi.ko supermin: internal insmod virtio_balloon.ko supermin: internal insmod virtio_dma_buf.ko supermin: internal insmod virtio_input.ko supermin: internal insmod virtio_mem.ko supermin: internal insmod virtio_mmio.ko supermin: internal insmod virtio_pci.ko supermin: internal insmod vdpa.ko supermin: internal insmod virtio_vdpa.ko supermin: internal insmod jbd2.ko supermin: internal insmod mbcache.ko supermin: internal insmod crc16.ko supermin: internal insmod ext4.ko supermin: internal insmod fuse.ko supermin: internal insmod virtiofs.ko supermin: internal insmod crc-itu-t.ko supermin: internal insmod crc4.ko supermin: internal insmod crc64.ko supermin: internal insmod crc7.ko supermin: internal insmod crc8.ko supermin: internal insmod libcrc32c.ko supermin: root UUID is longer than 16 bytes [ 0.555625] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000100 [ 0.556423] CPU: 0 PID: 1 Comm: init Not tainted 5.10.27-1-lts #1 [ 0.557065] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ArchLinux 1.14.0-1 04/01/2014 [ 0.558070] Call Trace: [ 0.558339] dump_stack+0x6b/0x83 [ 0.558694] panic+0x10b/0x2e1 [ 0.559023] do_exit.cold+0x57/0xb3 [ 0.559396] ? vfs_write+0x153/0x280 [ 0.559781] do_group_exit+0x33/0xa0 [ 0.560165] __x64_sys_exit_group+0x14/0x20 [ 0.560608] do_syscall_64+0x33/0x40 [ 0.560988] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 0.561520] RIP: 0033:0x441221 [ 0.561845] Code: c0 ff ff ff be e7 00 00 00 ba 3c 00 00 00 eb 16 66 0f 1f 84 00 00 00 00 00 89 d0 0f 05 48 3d 00 f0 ff ff 77 1c f4 89 f0 0f 05 <48> 3d 00 f0 ff ff 76 e7 f7 d8 64 41 89 00 eb df 0f 1f 80 00 00 00 [ 0.563775] RSP: 002b:00007ffd98dcca78 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 0.564576] RAX: ffffffffffffffda RBX: 00000000004b3230 RCX: 0000000000441221 [ 0.565319] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 0.566053] RBP: 0000000000000001 R08: ffffffffffffffc0 R09: 0000000000000000 [ 0.566785] R10: 0000000000441fb7 R11: 0000000000000246 R12: 00000000004b3230 [ 0.567547] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 0.568320] Kernel Offset: 0xec00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) [ 0.569419] Rebooting in 1 seconds.. libguestfs: child_cleanup: 0x558510868410: child process died libguestfs: sending SIGTERM to process 11801 libguestfs: qemu maxrss 175888K libguestfs: trace: launch = -1 (error) virt-resize: error: libguestfs error: guestfs_launch failed, see earlier error messages If reporting bugs, run virt-resize with debugging enabled and include the complete output: virt-resize -v -x [...] libguestfs: trace: close libguestfs: closing guestfs handle 0x558510868410 (state 0) libguestfs: command: run: rm libguestfs: command: run: \ -rf /tmp/libguestfsfW3FUV libguestfs: command: run: rm libguestfs: command: run: \ -rf /tmp/libguestfsxcJzEf libguestfs: trace: close libguestfs: closing guestfs handle 0x563eb1015550 (state 0) libguestfs: trace: close libguestfs: closing guestfs handle 0x563eb1046ad0 (state 0) Let me know what you think