failed to run ["ssh" "-p" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "IdentitiesOnly=yes" "-o" "BatchMode=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "root@10.128.10.18" "pwd"]: exit status 255 ssh: connect to host 10.128.10.18 port 22: Connection timed out Pseudo-terminal will not be allocated because stdin is not a terminal. Warning: Permanently added '[us-central1-ssh-serialport.googleapis.com]:9600' (ECDSA) to the list of known hosts. SeaBIOS (version 1.8.2-google) Total RAM Size = 0x0000000200000000 = 8192 MiB CPUs found: 2 Max CPUs supported: 2 SeaBIOS (version 1.8.2-google) Machine UUID 99cf6481-913a-f8b3-88a8-0e052a788a13 found virtio-scsi at 0:3 virtio-scsi vendor='Google' product='PersistentDisk' rev='1' type=0 removable=0 virtio-scsi blksize=512 sectors=4194304 = 2048 MiB drive 0x000f25d0: PCHS=0/0/0 translation=lba LCHS=520/128/63 s=4194304 Sending Seabios boot VM event. Booting from Hard Disk 0... [ 0.000000][ T0] Linux version syzkaller (syzkaller@syzkaller) (Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8) #0 SMP PREEMPT_RT now [ 0.000000][ T0] Command line: BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.000000][ T0] KERNEL supported cpus: [ 0.000000][ T0] Intel GenuineIntel [ 0.000000][ T0] AMD AuthenticAMD [ 0.000000][ T0] x86/CPU: Model not found in latest microcode list [ 0.000000][ T0] BIOS-provided physical RAM map: [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] System RAM [ 0.000000][ T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] device reserved [ 0.000000][ T0] BIOS-e820: [gap 0x00000000000a0000-0x00000000000effff] [ 0.000000][ T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] device reserved [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x00000000bfffcfff] System RAM [ 0.000000][ T0] BIOS-e820: [mem 0x00000000bfffd000-0x00000000bfffffff] device reserved [ 0.000000][ T0] BIOS-e820: [gap 0x00000000c0000000-0x00000000fffbbfff] [ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] device reserved [ 0.000000][ T0] BIOS-e820: [mem 0x0000000100000000-0x000000023fffffff] System RAM [ 0.000000][ T0] printk: legacy bootconsole [earlyser0] enabled [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] Hash pointers mode set to never. [ 0.000000][ T0] Malformed early option 'vsyscall' [ 0.000000][ T0] nopcid: PCID feature disabled [ 0.000000][ T0] NX (Execute Disable) protection: active [ 0.000000][ T0] APIC: Static calls initialized [ 0.000000][ T0] DMI: SMBIOS 2.4 present. [ 0.000000][ T0] DMI: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 0.000000][ T0] DMI: Memory slots populated: 1/1 [ 0.000000][ T0] Hypervisor detected: KVM [ 0.000000][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000005][ T0] kvm-clock: using sched offset of 5039704404 cycles [ 0.000012][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.000033][ T0] tsc: Detected 2199.998 MHz processor [ 0.003904][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000 [ 0.003951][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs [ 0.003963][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.004021][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.009007][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f] [ 0.009034][ T0] Using GB pages for direct mapping [ 0.012521][ T0] ACPI: Early table checksum verification disabled [ 0.012546][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google) [ 0.012565][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.012589][ T0] ACPI: FACP 0x00000000BFFFF370 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.012613][ T0] ACPI: DSDT 0x00000000BFFFD900 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.012632][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012647][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012662][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.012681][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.012699][ T0] ACPI: SSDT 0x00000000BFFFF470 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.012718][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.012734][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff370-0xbffff463] [ 0.012742][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd900-0xbffff363] [ 0.012749][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.012756][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.012763][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67] [ 0.012769][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65] [ 0.012776][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff470-0xbffffdef] [ 0.012783][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97] [ 0.012906][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.012916][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.012924][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff] [ 0.012936][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff] [ 0.012948][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff] [ 0.012970][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB) [ 0.012979][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB) [ 0.013074][ T0] NODE_DATA(0) allocated [mem 0x13fffac80-0x140000fff] [ 0.013823][ T0] NODE_DATA(1) allocated [mem 0x23fff6c80-0x23fffcfff] [ 0.293476][ T0] KernelAddressSanitizer initialized (generic) [ 0.294341][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.294377][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.294513][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.294527][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.294536][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.294545][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.294553][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.294572][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.294583][ T0] CPU topo: Max. logical packages: 1 [ 0.294587][ T0] CPU topo: Max. logical nodes: 1 [ 0.294592][ T0] CPU topo: Num. nodes per package: 1 [ 0.294600][ T0] CPU topo: Max. logical dies: 1 [ 0.294604][ T0] CPU topo: Max. dies per package: 1 [ 0.294616][ T0] CPU topo: Max. threads per core: 2 [ 0.294620][ T0] CPU topo: Num. cores per package: 1 [ 0.294625][ T0] CPU topo: Num. threads per package: 2 [ 0.294629][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs [ 0.294736][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.294746][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff] [ 0.294755][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff] [ 0.294783][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices [ 0.294791][ T0] Booting paravirtualized kernel on KVM [ 0.294802][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.427191][ T0] Zone ranges: [ 0.427200][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.427216][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.427225][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.427233][ T0] Device empty [ 0.4serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-0 port 1 (session ID: 20bfccb0a5c670a7412f742318779711b284a8288cff825f8c0b70ba5ff79c6a, active connections: 1). 27239][ T0] Movable zone start for each node [ 0.427242][ T0] Early memory node ranges [ 0.427245][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.427254][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.427262][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff] [ 0.427269][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff] [ 0.427278][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff] [ 0.427297][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff] [ 0.427345][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.427613][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.491072][ T0] On node 0, zone Normal: 3 pages in unavailable ranges [ 0.555084][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2 [ 0.555762][ T0] percpu: Embedded 71 pages/cpu s253768 r8192 d28856 u1048576 [ 0.555938][ T0] kvm-guest: PV spinlocks enabled [ 0.555970][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.555991][ T0] Kernel command line: earlyprintk=serial net.ifnames=0 sysctl.kernel.hung_task_all_cpu_backtrace=1 ima_policy=tcb nf-conntrack-ftp.ports=20000 nf-conntrack-tftp.ports=20000 nf-conntrack-sip.ports=20000 nf-conntrack-irc.ports=20000 nf-conntrack-sane.ports=20000 binder.debug_mask=0 rcupdate.rcu_expedited=1 rcupdate.rcu_cpu_stall_cputime=1 no_hash_pointers page_owner=on sysctl.vm.nr_hugepages=4 sysctl.vm.nr_overcommit_hugepages=4 secretmem.enable=1 sysctl.max_rcu_stall_to_panic=1 msr.allow_writes=off coredump_filter=0xffff root=/dev/sda console=ttyS0 vsyscall=native numa=fake=2 kvm-intel.nested=1 spec_store_bypass_disable=prctl nopcid vivid.n_devs=64 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=32 rose.rose_ndevs=32 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=32 max_loop=32 nbds_max=32 \ [ 0.556018][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.560247][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space. [ 0.560325][ T0] random: crng init done [ 0.560329][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes [ 0.560530][ T0] software IO TLB: area num 2. [ 0.586363][ T0] Fallback order for Node 0: 0 1 [ 0.586385][ T0] Fallback order for Node 1: 1 0 [ 0.586401][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051 [ 0.586409][ T0] Policy zone: Normal [ 0.587047][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 0.587056][ T0] stackdepot: allocating hash table via alloc_large_system_hash [ 0.587066][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear) [ 0.591209][ T0] stackdepot: allocating space for 8192 stack pools via memblock [ 1.270261][ T0] ********************************************************** [ 1.270273][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.270277][ T0] ** ** [ 1.270281][ T0] ** This system shows unhashed kernel memory addresses ** [ 1.270284][ T0] ** via the console, logs, and other interfaces. This ** [ 1.270288][ T0] ** might reduce the security of your system. ** [ 1.270292][ T0] ** ** [ 1.270296][ T0] ** If you see this message and you are not debugging ** [ 1.270299][ T0] ** the kernel, report this immediately to your system ** [ 1.270303][ T0] ** administrator! ** [ 1.270307][ T0] ** ** [ 1.270310][ T0] ** Use hash_pointers=always to force this mode off ** [ 1.270314][ T0] ** ** [ 1.270318][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.270321][ T0] ********************************************************** [ 1.273715][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2 [ 1.400029][ T0] allocated 167772160 bytes of page_ext [ 1.400075][ T0] Node 0, zone DMA: page owner found early allocated 0 pages [ 1.413610][ T0] Node 0, zone DMA32: page owner found early allocated 21120 pages [ 1.417879][ T0] Node 0, zone Normal: page owner found early allocated 131 pages [ 1.428836][ T0] Node 1, zone Normal: page owner found early allocated 19848 pages [ 1.429319][ T0] Kernel/User page tables isolation: enabled [ 1.431485][ T0] Dynamic Preempt: full [ 1.432632][ T0] Running RCU self tests [ 1.432637][ T0] Running RCU synchronous self tests [ 1.432642][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.432646][ T0] rcu: RCU lockdep checking is enabled. [ 1.432649][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 1.432673][ T0] rcu: RCU priority boosting: priority 1 delay 500 ms. [ 1.432680][ T0] rcu: RCU callback double-/use-after-free debug is enabled. [ 1.432684][ T0] rcu: RCU_SOFTIRQ processing moved to rcuc kthreads. [ 1.432688][ T0] rcu: RCU debug extended QS entry/exit. [ 1.432691][ T0] No expedited grace period (rcu_normal_after_boot). [ 1.432695][ T0] Trampoline variant of Tasks RCU enabled. [ 1.432698][ T0] Tracing variant of Tasks RCU enabled. [ 1.432702][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.432708][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.432884][ T0] Running RCU synchronous self tests [ 1.432919][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2. [ 1.598891][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.600039][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 1.600815][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000 [ 1.602796][ T0] Console: colour VGA+ 80x25 [ 1.966761][ T0] printk: legacy console [ttyS0] enabled [ 1.966773][ T0] printk: legacy bootconsole [earlyser0] disabled [ 1.966852][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 1.966857][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 1.966861][ T0] ... MAX_LOCK_DEPTH: 48 [ 1.966866][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 1.966871][ T0] ... CLASSHASH_SIZE: 4096 [ 1.966875][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576 [ 1.966880][ T0] ... MAX_LOCKDEP_CHAINS: 1048576 [ 1.966885][ T0] ... CHAINHASH_SIZE: 524288 [ 1.966889][ T0] memory used by lock dependency info: 106625 kB [ 1.966894][ T0] memory used for stack traces: 8320 kB [ 1.966899][ T0] per task-struct memory footprint: 1920 bytes [ 1.967221][ T0] ACPI: Core revision 20251212 [ 1.968634][ T0] APIC: Switch to symmetric I/O mode setup [ 1.969377][ T0] x2apic enabled [ 1.976181][ T0] APIC: Switched APIC routing to: physical x2apic [ 1.984789][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 1.985126][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns [ 1.985180][ T0] Calibrating delay loop (skipped) preset value.. 4399.99 BogoMIPS (lpj=21999980) [ 1.985877][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8 [ 1.985883][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4 [ 1.985948][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto [ 1.985967][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 1.985974][ T0] Spectre V2 : Mitigation: IBRS [ 1.985978][ T0] RETBleed: Mitigation: IBRS [ 1.985982][ T0] ITS: Mitigation: Aligned branch/return thunks [ 1.985987][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl [ 1.985991][ T0] MDS: Mitigation: Clear CPU buffers [ 1.985995][ T0] TAA: Mitigation: Clear CPU buffers [ 1.985999][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode [ 1.986004][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 1.986012][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT [ 1.986033][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 1.986088][ T0] active return thunk: its_return_thunk [ 1.986112][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit [ 1.986186][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 1.986197][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 1.986205][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 1.986215][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 1.986227][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. [ 2.399623][ T0] pid_max: default: 32768 minimum: 301 [ 2.401799][ T0] landlock: Up and running. [ 2.401814][ T0] Yama: becoming mindful. [ 2.402360][ T0] TOMOYO Linux initialized [ 2.403955][ T0] AppArmor: AppArmor initialized [ 2.407302][ T0] LSM support for eBPF active [ 2.415297][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage) [ 2.418811][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage) [ 2.419326][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.419541][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.423003][ T0] VFS: Finished mounting rootfs on nullfs [ 2.429149][ T0] Running RCU synchronous self tests [ 2.429163][ T0] Running RCU synchronous self tests [ 2.550790][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0) [ 2.555168][ T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only. [ 2.555168][ T1] signal: max sigframe size: 1776 [ 2.565263][ T1] rcu: Hierarchical SRCU implementation. [ 2.565273][ T1] rcu: Max phase no-delay instances is 1000. [ 2.628413][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level [ 2.811038][ T1] NMI watchdog: Perf NMI watchdog permanently disabled [ 2.812311][ T1] smp: Bringing up secondary CPUs ... [ 2.821606][ T1] smpboot: x86: Booting SMP configuration: [ 2.821630][ T1] .... node #0, CPUs: #1 [ 2.826925][ T1] MDS CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/mds.html for more details. [ 2.826925][ T1] TAA CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/tsx_async_abort.html for more details. [ 2.826925][ T1] MMIO Stale Data CPU bug present and SMT on, data leak possible. See https://www.kernel.org/doc/html/latest/admin-guide/hw-vuln/processor_mmio_stale_data.html for more details. [ 2.826925][ T1] smp: Brought up 2 nodes, 2 CPUs [ 2.826925][ T1] smpboot: Total of 2 processors activated (8799.99 BogoMIPS) [ 2.827872][ T1] Memory: 6466344K/8388204K available (167040K kernel code, 29616K rwdata, 39740K rodata, 25464K init, 129272K bss, 1733728K reserved, 0K cma-reserved) [ 2.836786][ T1] devtmpfs: initialized [ 2.844378][ T1] x86/mm: Memory block size: 128MB [ 2.957604][ T1] Running RCU synchronous self tests [ 2.957676][ T1] Running RCU synchronous self tests [ 2.957992][ T1] Running RCU Tasks wait API self tests [ 2.957992][ T1] Running RCU Tasks Trace wait API self tests [ 2.970558][ T37] ------------[ cut here ]------------ [ 2.970558][ T37] class_for_each_device called for class 'devlink' before it was registered [ 2.970558][ T37] WARNING: drivers/base/class.c:416 at class_for_each_device+0x2d8/0x390, CPU#1: kworker/1:1/37 [ 2.970558][ T37] Modules linked in: [ 2.970558][ T37] CPU: 1 UID: 0 PID: 37 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 2.970558][ T37] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 2.970558][ T37] Workqueue: events deferred_probe_timeout_work_func [ 2.970558][ T37] RIP: 0010:class_for_each_device+0x2fc/0x390 [ 2.970558][ T37] Code: 8d 1d 38 5c 0e 0a 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 62 fc a5 fc 49 8b 55 00 48 89 df 48 c7 c6 f1 46 5d 8d <67> 48 0f b9 3a b8 ea ff ff ff eb 1b e8 93 79 3b fc 49 81 c6 90 00 [ 2.970558][ T37] RSP: 0000:ffffc90000ac7a20 EFLAGS: 00010246 [ 2.970558][ T37] RAX: 1ffffffff17865d4 RBX: ffffffff8f984790 RCX: ffff88801e2e9f00 [ 2.970558][ T37] RDX: ffffffff8bc34360 RSI: ffffffff8d5d46f1 RDI: ffffffff8f984790 [ 2.970558][ T37] RBP: ffffc90000ac7af8 R08: ffffc90000ac7a7f R09: 0000000000000000 [ 2.970558][ T37] R10: ffffc90000ac7a60 R11: fffff52000158f50 R12: ffffc90000ac7a60 [ 2.970558][ T37] R13: ffffffff8bc32ea0 R14: 1ffff92000158f48 R15: dffffc0000000000 [ 2.970558][ T37] FS: 0000000000000000(0000) GS:ffff888125fdb000(0000) knlGS:0000000000000000 [ 2.970558][ T37] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 2.970558][ T37] CR2: 0000000000000000 CR3: 000000000ddb8000 CR4: 00000000003506f0 [ 2.970558][ T37] Call Trace: [ 2.970558][ T37] [ 2.970558][ T37] ? __pfx_fw_devlink_no_driver+0x10/0x10 [ 2.970558][ T37] ? __pfx_class_for_each_device+0x10/0x10 [ 2.970558][ T37] ? lockdep_hardirqs_on+0x7a/0x110 [ 2.970558][ T37] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 2.970558][ T37] ? mutex_lock_nested+0x152/0x1d0 [ 2.970558][ T37] ? fw_devlink_drivers_done+0x1e/0x50 [ 2.970558][ T37] ? process_one_work+0x8be/0x1630 [ 2.970558][ T37] fw_devlink_drivers_done+0x35/0x50 [ 2.970558][ T37] deferred_probe_timeout_work_func+0x21/0x220 [ 2.970558][ T37] ? process_one_work+0x8be/0x1630 [ 2.970558][ T37] process_one_work+0x98b/0x1630 [ 2.970558][ T37] ? __pfx_process_one_work+0x10/0x10 [ 2.970558][ T37] ? do_raw_spin_lock+0x12b/0x2f0 [ 2.970558][ T37] worker_thread+0xb49/0x1140 [ 2.970558][ T37] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 2.970558][ T37] kthread+0x388/0x470 [ 2.970558][ T37] ? __pfx_worker_thread+0x10/0x10 [ 2.970558][ T37] ? __pfx_kthread+0x10/0x10 [ 2.970558][ T37] ret_from_fork+0x514/0xb70 [ 2.970558][ T37] ? __pfx_ret_from_fork+0x10/0x10 [ 2.970558][ T37] ? __switch_to+0xc79/0x1410 [ 2.970558][ T37] ? __pfx_kthread+0x10/0x10 [ 2.970558][ T37] ret_from_fork_asm+0x1a/0x30 [ 2.970558][ T37] [ 2.970558][ T37] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 2.970558][ T37] CPU: 1 UID: 0 PID: 37 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 2.970558][ T37] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 2.970558][ T37] Workqueue: events deferred_probe_timeout_work_func [ 2.970558][ T37] Call Trace: [ 2.970558][ T37] [ 2.970558][ T37] vpanic+0x56c/0xa60 [ 2.970558][ T37] ? __pfx__printk+0x10/0x10 [ 2.970558][ T37] ? __pfx_vpanic+0x10/0x10 [ 2.970558][ T37] ? is_bpf_text_address+0x292/0x2b0 [ 2.970558][ T37] ? is_bpf_text_address+0x26/0x2b0 [ 2.970558][ T37] panic+0xc5/0xd0 [ 2.970558][ T37] ? __pfx_panic+0x10/0x10 [ 2.970558][ T37] ? ret_from_fork_asm+0x1a/0x30 [ 2.970558][ T37] __warn+0x315/0x4c0 [ 2.970558][ T37] ? class_for_each_device+0x2d8/0x390 [ 2.970558][ T37] ? class_for_each_device+0x2d8/0x390 [ 2.970558][ T37] __report_bug+0x339/0x540 [ 2.970558][ T37] ? class_for_each_device+0x2d8/0x390 [ 2.970558][ T37] ? __pfx___report_bug+0x10/0x10 [ 2.970558][ T37] report_bug_entry+0x19a/0x290 [ 2.970558][ T37] ? class_for_each_device+0x2fc/0x390 [ 2.970558][ T37] ? class_for_each_device+0x301/0x390 [ 2.970558][ T37] handle_bug+0xce/0x200 [ 2.970558][ T37] exc_invalid_op+0x1a/0x50 [ 2.970558][ T37] asm_exc_invalid_op+0x1a/0x20 [ 2.970558][ T37] RIP: 0010:class_for_each_device+0x2fc/0x390 [ 2.970558][ T37] Code: 8d 1d 38 5c 0e 0a 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 62 fc a5 fc 49 8b 55 00 48 89 df 48 c7 c6 f1 46 5d 8d <67> 48 0f b9 3a b8 ea ff ff ff eb 1b e8 93 79 3b fc 49 81 c6 90 00 [ 2.970558][ T37] RSP: 0000:ffffc90000ac7a20 EFLAGS: 00010246 [ 2.970558][ T37] RAX: 1ffffffff17865d4 RBX: ffffffff8f984790 RCX: ffff88801e2e9f00 [ 2.970558][ T37] RDX: ffffffff8bc34360 RSI: ffffffff8d5d46f1 RDI: ffffffff8f984790 [ 2.970558][ T37] RBP: ffffc90000ac7af8 R08: ffffc90000ac7a7f R09: 0000000000000000 [ 2.970558][ T37] R10: ffffc90000ac7a60 R11: fffff52000158f50 R12: ffffc90000ac7a60 [ 2.970558][ T37] R13: ffffffff8bc32ea0 R14: 1ffff92000158f48 R15: dffffc0000000000 [ 2.970558][ T37] ? __pfx_fw_devlink_no_driver+0x10/0x10 [ 2.970558][ T37] ? __pfx_class_for_each_device+0x10/0x10 [ 2.970558][ T37] ? lockdep_hardirqs_on+0x7a/0x110 [ 2.970558][ T37] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 2.970558][ T37] ? mutex_lock_nested+0x152/0x1d0 [ 2.970558][ T37] ? fw_devlink_drivers_done+0x1e/0x50 [ 2.970558][ T37] ? process_one_work+0x8be/0x1630 [ 2.970558][ T37] fw_devlink_drivers_done+0x35/0x50 [ 2.970558][ T37] deferred_probe_timeout_work_func+0x21/0x220 [ 2.970558][ T37] ? process_one_work+0x8be/0x1630 [ 2.970558][ T37] process_one_work+0x98b/0x1630 [ 2.970558][ T37] ? __pfx_process_one_work+0x10/0x10 [ 2.970558][ T37] ? do_raw_spin_lock+0x12b/0x2f0 [ 2.970558][ T37] worker_thread+0xb49/0x1140 [ 2.970558][ T37] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 2.970558][ T37] kthread+0x388/0x470 [ 2.970558][ T37] ? __pfx_worker_thread+0x10/0x10 [ 2.970558][ T37] ? __pfx_kthread+0x10/0x10 [ 2.970558][ T37] ret_from_fork+0x514/0xb70 [ 2.970558][ T37] ? __pfx_ret_from_fork+0x10/0x10 [ 2.970558][ T37] ? __switch_to+0xc79/0x1410 [ 2.970558][ T37] ? __pfx_kthread+0x10/0x10 [ 2.970558][ T37] ret_from_fork_asm+0x1a/0x30 [ 2.970558][ T37]