[    1.016409] Linux version 6.18.7 (br-user@runner-fmzeppyue-project-3290221-concurrent-0) (s390x-linux-gcc.br_real (toolchains.bootlin.com 2026.08-1) 16.2.0, GNU ld (GNU Binutils) 2.46.1) #1 SMP Sun Sep  6 05:12:10 UTC 2026

[    1.018402] setup: Linux is running under KVM in 64-bit mode

[    1.018742] boot: KASLR disabled: CPU has no PRNG

[    1.018792] boot: KASLR disabled: CPU has no PRNG

[    1.018813] boot: KASLR disabled: CPU has no PRNG

[    1.080278] setup: The maximum memory size is 4096MB

[    1.080903] setup: Relocating AMODE31 section of size 0x00003000

[    1.083983] cpu: 2 configured CPUs, 0 standby CPUs

[    1.163958] Write protected kernel read-only data: 21344k

[    1.173956] Zone ranges:

[    1.173993]   DMA      [mem 0x0000000000000000-0x000000007fffffff]

[    1.174676]   Normal   [mem 0x0000000080000000-0x00000000ffffffff]

[    1.174726]   Device   empty

[    1.174760] Movable zone start for each node

[    1.174799] Early memory node ranges

[    1.174834]   node   0: [mem 0x0000000000000000-0x00000000ffffffff]

[    1.175329] Initmem setup node 0 [mem 0x0000000000000000-0x00000000ffffffff]

[    1.546638] percpu: Embedded 33 pages/cpu s96000 r8192 d30976 u135168

[    1.549314] Kernel command line: rootwait root=/dev/vda net.ifnames=0 biosdevname=0

[    1.551613] Unknown kernel command line parameters "biosdevname=0", will be passed to user space.

[    1.552590] random: crng init done

[    1.552789] printk: log buffer data + meta data: 131072 + 458752 = 589824 bytes

[    1.566150] Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes, linear)

[    1.572511] Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)

[    1.574830] Fallback order for Node 0: 0 

[    1.575203] Built 1 zonelists, mobility grouping on.  Total pages: 1048576

[    1.575241] Policy zone: Normal

[    1.575526] mem auto-init: stack:all(zero), heap alloc:off, heap free:off

[    1.658081] SLUB: HWalign=256, Order=0-3, MinObjects=0, CPUs=2, Nodes=1

[    1.811573] ftrace: allocating 53716 entries in 210 pages

[    1.811907] ftrace: allocated 210 pages with 4 groups

[    1.844901] rcu: Hierarchical RCU implementation.

[    1.844952] rcu: 	RCU event tracing is enabled.

[    1.844990] rcu: 	RCU restricting CPUs from NR_CPUS=512 to nr_cpu_ids=2.

[    1.845189] 	Rude variant of Tasks RCU enabled.

[    1.845210] 	Tracing variant of Tasks RCU enabled.

[    1.845334] rcu: RCU calculated value of scheduler-enlistment delay is 100 jiffies.

[    1.845399] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2

[    1.847062] RCU Tasks Rude: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.

[    1.847122] RCU Tasks Trace: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2.

[    1.942367] NR_IRQS: 3, nr_irqs: 3, preallocated irqs: 3

[    1.945987] rcu: srcu_init: Setting srcu_struct sizes based on contention.

[    1.947855] clocksource: tod: mask: 0xffffffffffffffff max_cycles: 0x3b0a9be803b, max_idle_ns: 440795202126 ns

[    1.961733] Console: colour dummy device 80x25

[    1.973006] printk: legacy console [ttysclp0] enabled

[    1.977827] pid_max: default: 32768 minimum: 301

[    1.980882] LSM: initializing lsm=lockdown,capability,landlock,selinux,bpf,ima

[    1.982338] landlock: Up and running.

[    1.982499] SELinux:  Initializing.

[    1.985708] LSM support for eBPF active

[    1.988071] Mount-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)

[    1.988204] Mountpoint-cache hash table entries: 8192 (order: 4, 65536 bytes, linear)

[    2.070648] rcu: Hierarchical SRCU implementation.

[    2.070801] rcu: 	Max phase no-delay instances is 400.

[    2.074266] Timer migration: 1 hierarchy levels; 8 children per group; 1 crossnode level

[    2.088040] smp: Bringing up secondary CPUs ...

[    2.117998] smp: Brought up 1 node, 2 CPUs

[    2.376192] node 0 deferred pages initialised in 230ms

[    2.388108] Memory: 4081864K/4194304K available (15932K kernel code, 2388K rwdata, 5412K rodata, 1968K init, 896K bss, 107852K reserved, 0K cma-reserved)

[    2.437308] devtmpfs: initialized

[    2.499076] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 1911260446275000 ns

[    2.500321] posixtimers hash table entries: 1024 (order: 2, 16384 bytes, linear)

[    2.502159] futex hash table entries: 512 (131072 bytes on 1 NUMA nodes, total 128 KiB, linear).

[    2.517710] NET: Registered PF_NETLINK/PF_ROUTE protocol family

[    2.524810] audit: initializing netlink subsys (disabled)

[    2.537310] audit: type=2000 audit(1788671658.295:1): state=initialized audit_enabled=0 res=1

[    2.541762] Spectre V2 mitigation: execute trampolines

[    2.600561] raid6: vx128x8  gen()   788 MB/s

[    2.600751] raid6: using algorithm vx128x8 gen() 788 MB/s

[    2.617605] raid6: .... xor() 416 MB/s, rmw enabled

[    2.617730] raid6: using s390xc recovery algorithm

[    2.621225] iommu: Default domain type: Translated

[    2.621331] iommu: DMA domain TLB invalidation policy: lazy mode

[    2.628391] SCSI subsystem initialized

[    3.029279] VFS: Disk quotas dquot_6.6.0

[    3.029756] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)

[    3.039125] hugetlbfs: disabling because there are no supported hugepage sizes

[    3.120690] NET: Registered PF_INET protocol family

[    3.122854] IP idents hash table entries: 65536 (order: 7, 524288 bytes, linear)

[    3.142761] tcp_listen_portaddr_hash hash table entries: 2048 (order: 3, 32768 bytes, linear)

[    3.143017] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, linear)

[    3.143173] TCP established hash table entries: 32768 (order: 6, 262144 bytes, linear)

[    3.144229] TCP bind hash table entries: 32768 (order: 8, 1048576 bytes, linear)

[    3.169810] TCP: Hash tables configured (established 32768 bind 32768)

[    3.173157] MPTCP token hash table entries: 4096 (order: 5, 98304 bytes, linear)

[    3.174025] UDP hash table entries: 2048 (order: 5, 131072 bytes, linear)

[    3.180364] UDP-Lite hash table entries: 2048 (order: 5, 131072 bytes, linear)

[    3.183539] NET: Registered PF_UNIX/PF_LOCAL protocol family

[    3.184242] NET: Registered PF_XDP protocol family

[    3.184837] PCI: CLS 0 bytes, default 256

[    3.203980] Key type cert_store_key registered

[    3.205953] hypfs: The hardware system does not support hypfs

[    3.633356] Initialise system trusted keyrings

[    3.637100] Key type blacklist registered

[    3.640149] workingset: timestamp_bits=45 max_order=20 bucket_order=0

[    3.654801] fuse: init (API version 7.45)

[    3.658893] SGI XFS with ACLs, security attributes, realtime, quota, no debug enabled

[    3.679687] integrity: Platform Keyring initialized

[    4.076019] xor: automatically using best checksumming function   xc        

[    4.076212] Key type asymmetric registered

[    4.076334] Asymmetric key parser 'x509' registered

[    4.077080] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 251)

[    4.080044] io scheduler mq-deadline registered

[    4.080167] io scheduler kyber registered

[    4.080714] io scheduler bfq registered

[    4.096137] atomic64_test: passed

[    4.098875] hvc_iucv: The z/VM IUCV HVC device driver cannot be used without z/VM

[    4.191383] brd: module loaded

[    4.194941] zram: Added device: zram0

[    4.196750] device-mapper: core: CONFIG_IMA_DISABLE_HTABLE is disabled. Duplicate IMA measurements will not be recorded in the IMA log.

[    4.196968] device-mapper: uevent: version 1.0.3

[    4.198879] device-mapper: ioctl: 4.50.0-ioctl (2025-04-28) initialised: dm-devel@lists.linux.dev

[    4.201839] cio: Channel measurement facility initialized using format extended (mode autodetected)

[    4.206792] Discipline DIAG cannot be used without z/VM

[    4.219238] ap: The hardware system does not support AP instructions

[    4.219380] qeth: loading core functions

[    4.220944] qeth: register layer 2 discipline

[    4.221025] qeth: register layer 3 discipline

[    4.225548] NET: Registered PF_INET6 protocol family

[    4.231789] virtio_blk virtio1: 1/0/0 default/read/poll queues

[    4.243625] virtio_blk virtio1: [vda] 245760 512-byte logical blocks (126 MB/120 MiB)

[    4.249884] Segment Routing with IPv6

[    4.250009] RPL Segment Routing with IPv6

[    4.250286] In-situ OAM (IOAM) with IPv6

[    4.252294] NET: Registered PF_PACKET protocol family

[    4.253316] bridge: filtering via arp/ip/ip6tables is no longer available by default. Update your scripts to load br_netfilter if you need this.

[    4.255140] Key type dns_resolver registered

[    4.295221] registered taskstats version 1

[    4.300670] Loading compiled-in X.509 certificates

[    4.530841] Loaded X.509 cert 'Build time autogenerated kernel key: 83e20dc58e2b8df446aec4f0ec2247e635883420'

[    4.598739] Demotion targets for Node 0: null

[    4.605190] Key type .fscrypt registered

[    4.605278] Key type fscrypt-provisioning registered

[    4.613375] Btrfs loaded, zoned=no, fsverity=yes

[    4.615133] Key type big_key registered

[    4.615949] ima: No TPM chip found, activating TPM-bypass!

[    4.616159] ima: Allocated hash algorithm: sha256

[    4.638370] ima: No architecture policies found

[    4.744801] check access for rdinit=/init failed: -2, ignoring

[    4.745027] md: Waiting for all devices to be available before autodetect

[    4.745072] md: If you don't use raid, use raid=noautodetect

[    4.745131] md: Autodetecting RAID arrays.

[    4.745217] md: autorun ...

[    4.745271] md: ... autorun DONE.

[    4.760178] EXT4-fs (vda): mounting ext2 file system using the ext4 subsystem

[    4.778798] EXT4-fs (vda): mounted filesystem 36688cbf-c754-48de-ae36-1f5128f02da6 ro without journal. Quota mode: none.

[    4.779647] VFS: Mounted root (ext2 filesystem) readonly on device 253:0.

[    4.787237] devtmpfs: mounted

[    4.816591] Freeing unused kernel image (initmem) memory: 1968K

[    4.818330] Write protected read-only-after-init data: 188k

[    5.646525] Checked W+X mappings: passed, no unexpected W+X pages found

[    5.646991] Run /sbin/init as init process

[    6.040847] EXT4-fs (vda): re-mounted 36688cbf-c754-48de-ae36-1f5128f02da6 r/w.

Saving 256 bits of creditable seed for next boot

Starting syslogd: OK

Starting klogd: OK

Running sysctl: OK

Starting udevd: OK

[    7.885365] udevd[140]: starting version 3.2.14

[    8.259776] udevd[140]: starting eudev-3.2.14

[    8.901095] VFIO - User Level meta-driver version: 0.3

[   10.300981] hrtimer: interrupt took 2501124 ns

Starting network: udhcpc: started, v1.38.0

udhcpc: broadcasting discover

udhcpc: broadcasting select for 10.0.2.15, server 10.0.2.2

udhcpc: lease of 10.0.2.15 obtained from 10.0.2.2, lease time 86400

deleting routers

adding dns 10.0.2.3

OK

Starting crond: OK

Starting tests

TODO: add some more tests

Ending tests




Welcome to Buildroot


buildroot login: root
root

# poweroff
poweroff

# 

# This is the toolchain test suite

Usage: /etc/init.d/S90tests start

Stopping crond: stopped /usr/sbin/crond (pid 197)

OK

Stopping network: OK

Stopping udevd: OK

Stopping klogd: stopped /sbin/klogd (pid 128)

OK

Stopping syslogd: stopped /sbin/syslogd (pid 124)

OK

Seeding 256 bits and crediting

Saving 256 bits of creditable seed for next boot

umount: devtmpfs busy - remounted read-only

[   20.294879] EXT4-fs (vda): re-mounted 36688cbf-c754-48de-ae36-1f5128f02da6 ro.


The system is going down NOW!


Sent SIGTERM to all processes


Sent SIGKILL to all processes


Requesting system poweroff