Hello, I found this interesting and tried to reproduce the issue.
It did not show up during installation step and just at startup with the generic kernel, so I tried to install the smp one. With "apt install linux-image-alpha-smp" and later with the "dpkg --configure -a" the issue shows up quite reliable [1], still running the generic kernel. It can also be triggered by "systemctl start apparmor.service" [4]. This was observed with 1:10.1.0+ds-5. In [2] is a backtrace with debug symbols installed. In [3] are the steps I noted to get the alpha VM set up inside a temporary minimal amd64 VM. Kind regards, Bernhard [1] root@debian:~# dpkg --configure -a Setting up apparmor (4.1.0-1) ... [ 73.884727] audit: type=1400 audit(1758805994.276:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="lsb_release" pid=678 comm="apparmor_parser" [ 74.790977] audit: type=1400 audit(1758805995.192:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="nvidia_modprobe" pid=686 comm="apparmor_parser" [ 74.813438] audit: type=1400 audit(1758805995.212:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name="nvidia_modprobe//kmod" pid=686 comm="apparmor_parser" Created symlink '/etc/systemd/system/sysinit.target.wants/apparmor.service' -> '/usr/lib/systemd/system/apparmor.service'. Reloading AppArmor profiles [ 81.324177] audit: type=1400 audit(1758806001.727:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="1password" pid=746 comm="apparmor_parser" [ 81.347614] audit: type=1400 audit(1758806001.751:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="Discord" pid=747 comm="apparmor_parser" [ 81.372028] audit: type=1400 audit(1758806001.774:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name=4D6F6E676F444220436F6D70617373 pid=748 comm="apparmor_parser" [ 81.398395] audit: type=1400 audit(1758806001.802:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="QtWebEngineProcess" pid=749 comm="apparmor_parser" [ 81.982379] audit: type=1400 audit(1758806002.386:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="Xorg" pid=750 comm="apparmor_parser" [ 82.037067] audit: type=1400 audit(1758806002.439:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="balena-etcher" pid=751 comm="apparmor_parser" [ 82.059528] audit: type=1400 audit(1758806002.463:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="brave" pid=752 comm="apparmor_parser" [ 82.082965] audit: type=1400 audit(1758806002.486:12): apparmor="STATUS" operation="profile_load" profile="unconfined" name="buildah" pid=753 comm="apparmor_parser" [ 82.107379] audit: type=1400 audit(1758806002.511:13): apparmor="STATUS" operation="profile_load" profile="unconfined" name="busybox" pid=754 comm="apparmor_parser" [ 82.132770] audit: type=1400 audit(1758806002.534:14): apparmor="STATUS" operation="profile_load" profile="unconfined" name="cam" pid=755 comm="apparmor_parser" ** ERROR:accel/tcg/cputlb.c:2944:cpu_pointer_wrap_notreached: code should not be reached Bail out! ERROR:accel/tcg/cputlb.c:2944:cpu_pointer_wrap_notreached: code should not be reached [2] benutzer@debian:~$ gdb -q --pid $(pidof qemu-system-alpha) Attaching to process 10916 [New LWP 10922] [New LWP 10921] [New LWP 10920] [New LWP 10919] [New LWP 10918] [New LWP 10917] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56 warning: 56 ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S: Datei oder Verzeichnis nicht gefunden (gdb) cont Continuing. (gdb) Thread 5 "qemu-system-alp" received signal SIGABRT, Aborted. [Switching to Thread 0x7f0d6b8016c0 (LWP 10919)] __GI_abort () at ./stdlib/abort.c:91 warning: 91 ./stdlib/abort.c: Datei oder Verzeichnis nicht gefunden (gdb) set width 0 (gdb) set pagination off (gdb) bt #0 __GI_abort () at ./stdlib/abort.c:91 #1 0x00007f0d746d00bb in g_assertion_message (domain=domain@entry=0x0, file=file@entry=0x5647ff8c6164 "accel/tcg/cputlb.c", line=line@entry=2944, func=func@entry=0x5647ff9dd150 <__func__.0> "cpu_pointer_wrap_notreached", message=message@entry=0x7f0d091e69c0 "code should not be reached") at ../../../glib/gtestutils.c:3459 #2 0x00007f0d7473c5ce in g_assertion_message_expr (domain=domain@entry=0x0, file=file@entry=0x5647ff8c6164 "accel/tcg/cputlb.c", line=line@entry=2944, func=func@entry=0x5647ff9dd150 <__func__.0> "cpu_pointer_wrap_notreached", expr=expr@entry=0x0) at ../../../glib/gtestutils.c:3485 #3 0x00005647ff69dff7 in cpu_pointer_wrap_notreached (cs=<optimized out>, idx=<optimized out>, res=<optimized out>, base=<optimized out>) at accel/tcg/cputlb.c:2944 #4 0x00005647ff6940d2 in mmu_lookup (cpu=cpu@entry=0x5648316436e0, addr=18446739675751088126, oi=<optimized out>, ra=ra@entry=139695112588102, type=type@entry=MMU_DATA_LOAD, l=l@entry=0x7f0d6b7fff10) at accel/tcg/cputlb.c:1776 #5 0x00005647ff69456d in do_ld4_mmu (cpu=0x5648316436e0, addr=<optimized out>, oi=<optimized out>, ra=139695112588102, access_type=access_type@entry=MMU_DATA_LOAD) at accel/tcg/cputlb.c:2374 #6 0x00005647ff696647 in helper_ldul_mmu (env=<optimized out>, addr=<optimized out>, oi=<optimized out>, retaddr=<optimized out>) at accel/tcg/ldst_common.c.inc:33 #7 0x00007f0d4d900c40 in code_gen_buffer () #8 0x00005647ff67ee13 in cpu_tb_exec (cpu=cpu@entry=0x5648316436e0, itb=itb@entry=0x7f0d5ca4af00 <code_gen_buffer+257162963>, tb_exit=tb_exit@entry=0x7f0d6b8004cc) at accel/tcg/cpu-exec.c:438 #9 0x00005647ff67f272 in cpu_loop_exec_tb (cpu=0x5648316436e0, tb=0x7f0d5ca4af00 <code_gen_buffer+257162963>, pc=18446739675684378516, last_tb=<synthetic pointer>, tb_exit=0x7f0d6b8004cc) at accel/tcg/cpu-exec.c:872 #10 cpu_exec_loop (cpu=cpu@entry=0x5648316436e0, sc=sc@entry=0x7f0d6b800590) at accel/tcg/cpu-exec.c:982 #11 0x00005647ff67f911 in cpu_exec_setjmp (cpu=cpu@entry=0x5648316436e0, sc=sc@entry=0x7f0d6b800590) at accel/tcg/cpu-exec.c:999 #12 0x00005647ff67ff9d in cpu_exec (cpu=cpu@entry=0x5648316436e0) at accel/tcg/cpu-exec.c:1025 #13 0x00005647ff69f0f7 in tcg_cpu_exec (cpu=cpu@entry=0x5648316436e0) at accel/tcg/tcg-accel-ops.c:82 #14 0x00005647ff69f4da in mttcg_cpu_thread_fn (arg=0x5648316436e0) at accel/tcg/tcg-accel-ops-mttcg.c:94 #15 0x00005647ff87372f in qemu_thread_start (args=0x564831643630) at util/qemu-thread-posix.c:393 #16 0x00007f0d7389cb7b in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:448 #17 0x00007f0d7391a7b8 in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78 (gdb) print/x 18446739675751088126 $1 = 0xfffffc00053f7ffe (gdb) print/x 139695112588102 $2 = 0x7f0d4d900b46 (gdb) [3] # 2025-09-24 minimal Trixie/stable amd64 qemu VM apt install xserver-xorg slim jwm mc net-tools gdb qemu-system libguestfs-tools libc6-dbg libglib2.0-0t64-dbgsym #enable unstable sources apt install qemu-system qemu-system-misc-dbgsym wget https://cdimage.debian.org/cdimage/ports/snapshots/2025-08-29/debian-12.0.0-alpha-NETINST-1.iso mkdir iso mount debian-12.0.0-alpha-NETINST-1.iso iso zcat iso/boot/vmlinuz > vmlinux cp -a iso/boot/initrd.gz . qemu-img create -f qcow2 alpha-system.img 20G qemu-system-alpha \ -smp 4 \ -m 1024M \ -drive media=cdrom,file=debian-12.0.0-alpha-NETINST-1.iso,readonly \ -drive file=alpha-system.img,format=qcow2 \ -net nic -net user,hostfwd=tcp::2222-:22 \ -nographic \ -append "rw console=ttyS0" \ -kernel vmlinux \ -initrd initrd.gz # mkdir /mnt/test guestmount -a alpha-system.img -i --ro /mnt/test cp -a /mnt/test/boot 2025-09-25_boot cat /mnt/test/etc/fstab | grep "/ " # / was on /dev/sda3 during installation UUID=4a6e9ae5-68a4-412c-ba08-0d4055e79254 / ext4 errors=remount-ro 0 1 umount /mnt/test zcat 2025-09-25_boot/vmlinuz-6.16.8+deb14-alpha-generic > 2025-09-25_boot/vmlinux-6.16.8+deb14-alpha-generic qemu-system-alpha \ -smp 4 \ -m 1024M \ -drive file=alpha-system.img,format=qcow2 \ -net nic -net user,hostfwd=tcp::2222-:22 \ -nographic \ -append "root=UUID=4a6e9ae5-68a4-412c-ba08-0d4055e79254 rw console=ttyS0" \ -kernel 2025-09-25_boot/vmlinux-6.16.8+deb14-alpha-generic \ -initrd 2025-09-25_boot/initrd.img-6.16.8+deb14-alpha-generic # [4] benutzer@debian:~$ sudo su - [sudo] password for benutzer: root@debian:~# systemctl status apparmor.service * apparmor.service - Load AppArmor profiles Loaded: loaded (/usr/lib/systemd/system/apparmor.service; disabled; preset: enabled) Active: inactive (dead) Docs: man:apparmor(7) https://gitlab.com/apparmor/apparmor/wikis/home/ root@debian:~# systemctl start apparmor.service [ 98.806590] audit: type=1400 audit(1758807382.045:2): apparmor="STATUS" operation="profile_load" profile="unconfined" name="1password" pid=615 comm="apparmor_parser" [ 98.832957] audit: type=1400 audit(1758807382.072:3): apparmor="STATUS" operation="profile_load" profile="unconfined" name="Discord" pid=616 comm="apparmor_parser" [ 98.857371] audit: type=1400 audit(1758807382.098:4): apparmor="STATUS" operation="profile_load" profile="unconfined" name=4D6F6E676F444220436F6D70617373 pid=617 comm="apparmor_parser" [ 98.889597] audit: type=1400 audit(1758807382.130:5): apparmor="STATUS" operation="profile_load" profile="unconfined" name="QtWebEngineProcess" pid=618 comm="apparmor_parser" [ 99.478464] audit: type=1400 audit(1758807382.720:6): apparmor="STATUS" operation="profile_load" profile="unconfined" name="Xorg" pid=619 comm="apparmor_parser" [ 99.525339] audit: type=1400 audit(1758807382.767:7): apparmor="STATUS" operation="profile_load" profile="unconfined" name="balena-etcher" pid=620 comm="apparmor_parser" [ 99.555613] audit: type=1400 audit(1758807382.795:8): apparmor="STATUS" operation="profile_load" profile="unconfined" name="brave" pid=621 comm="apparmor_parser" [ 99.604441] audit: type=1400 audit(1758807382.846:9): apparmor="STATUS" operation="profile_load" profile="unconfined" name="buildah" pid=622 comm="apparmor_parser" [ 99.627878] audit: type=1400 audit(1758807382.869:10): apparmor="STATUS" operation="profile_load" profile="unconfined" name="busybox" pid=623 comm="apparmor_parser" [ 99.651316] audit: type=1400 audit(1758807382.892:11): apparmor="STATUS" operation="profile_load" profile="unconfined" name="cam" pid=624 comm="apparmor_parser" ** ERROR:accel/tcg/cputlb.c:2944:cpu_pointer_wrap_notreached: code should not be reached Bail out! ERROR:accel/tcg/cputlb.c:2944:cpu_pointer_wrap_notreached: code should not be reached Abgebrochen
