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@10.128.10.24" "pwd"]: exit status 255 ssh: connect to host 10.128.10.24 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 87553e13-18f2-9e54-747a-23c9e9626178 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 5039051012 cycles [ 0.000013][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.000034][ T0] tsc: Detected 2199.998 MHz processor [ 0.003822][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000 [ 0.003869][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs [ 0.003880][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.003938][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.008956][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f] [ 0.008983][ T0] Using GB pages for direct mapping [ 0.012478][ T0] ACPI: Early table checksum verification disabled [ 0.012502][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google) [ 0.012518][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.012540][ T0] ACPI: FACP 0x00000000BFFFF370 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.012563][ T0] ACPI: DSDT 0x00000000BFFFD900 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.012581][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012594][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012608][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.012626][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.012643][ T0] ACPI: SSDT 0x00000000BFFFF470 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.012661][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.012675][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff370-0xbffff463] [ 0.012683][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd900-0xbffff363] [ 0.012689][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.012696][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.012702][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67] [ 0.012709][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65] [ 0.012715][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff470-0xbffffdef] [ serialport: Connected to syzkaller.us-central1-c.ci-upstream-rust-kasan-gce-test-0 port 1 (session ID: 48863bdbf6f0fc000598cc245f80c19a3b7295a046d35f9f4c93d43b666b6b9e, active connections: 1). 0.012722][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97] [ 0.012850][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.012860][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.012868][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff] [ 0.012879][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff] [ 0.012890][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff] [ 0.012912][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB) [ 0.012920][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB) [ 0.013014][ T0] NODE_DATA(0) allocated [mem 0x13fffac80-0x140000fff] [ 0.013805][ T0] NODE_DATA(1) allocated [mem 0x23fff6c80-0x23fffcfff] [ 0.319937][ T0] KernelAddressSanitizer initialized (generic) [ 0.320742][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.320783][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.320922][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.320937][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.320946][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.320953][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.320961][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.320981][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.320991][ T0] CPU topo: Max. logical packages: 1 [ 0.320996][ T0] CPU topo: Max. logical nodes: 1 [ 0.320999][ T0] CPU topo: Num. nodes per package: 1 [ 0.321007][ T0] CPU topo: Max. logical dies: 1 [ 0.321011][ T0] CPU topo: Max. dies per package: 1 [ 0.321023][ T0] CPU topo: Max. threads per core: 2 [ 0.321028][ T0] CPU topo: Num. cores per package: 1 [ 0.321032][ T0] CPU topo: Num. threads per package: 2 [ 0.321036][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs [ 0.321224][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.321234][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff] [ 0.321242][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff] [ 0.321264][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices [ 0.321270][ T0] Booting paravirtualized kernel on KVM [ 0.321282][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.458762][ T0] Zone ranges: [ 0.458771][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.458783][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.458791][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.458799][ T0] Device empty [ 0.458804][ T0] Movable zone start for each node [ 0.458807][ T0] Early memory node ranges [ 0.458811][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.458818][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.458826][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff] [ 0.458833][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff] [ 0.458842][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff] [ 0.458861][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff] [ 0.458910][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.459177][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.525835][ T0] On node 0, zone Normal: 3 pages in unavailable ranges [ 0.591681][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2 [ 0.592482][ T0] percpu: Embedded 71 pages/cpu s253768 r8192 d28856 u1048576 [ 0.592675][ T0] kvm-guest: PV spinlocks enabled [ 0.592685][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.592705][ 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 \ [ 0.592732][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.597293][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space. [ 0.597406][ T0] random: crng init done [ 0.597411][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes [ 0.597622][ T0] software IO TLB: area num 2. [ 0.624576][ T0] Fallback order for Node 0: 0 1 [ 0.624598][ T0] Fallback order for Node 1: 1 0 [ 0.624612][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051 [ 0.624620][ T0] Policy zone: Normal [ 0.625272][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 0.625282][ T0] stackdepot: allocating hash table via alloc_large_system_hash [ 0.625292][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear) [ 0.629595][ T0] stackdepot: allocating space for 8192 stack pools via memblock [ 1.342515][ T0] ********************************************************** [ 1.342526][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.342530][ T0] ** ** [ 1.342533][ T0] ** This system shows unhashed kernel memory addresses ** [ 1.342537][ T0] ** via the console, logs, and other interfaces. This ** [ 1.342541][ T0] ** might reduce the security of your system. ** [ 1.342545][ T0] ** ** [ 1.342548][ T0] ** If you see this message and you are not debugging ** [ 1.342552][ T0] ** the kernel, report this immediately to your system ** [ 1.342555][ T0] ** administrator! ** [ 1.342559][ T0] ** ** [ 1.342563][ T0] ** Use hash_pointers=always to force this mode off ** [ 1.342566][ T0] ** ** [ 1.342570][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.342574][ T0] ********************************************************** [ 1.346025][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2 [ 1.472286][ T0] allocated 167772160 bytes of page_ext [ 1.472330][ T0] Node 0, zone DMA: page owner found early allocated 0 pages [ 1.486048][ T0] Node 0, zone DMA32: page owner found early allocated 21120 pages [ 1.490300][ T0] Node 0, zone Normal: page owner found early allocated 131 pages [ 1.501451][ T0] Node 1, zone Normal: page owner found early allocated 19848 pages [ 1.501957][ T0] Kernel/User page tables isolation: enabled [ 1.504142][ T0] Dynamic Preempt: full [ 1.505287][ T0] Running RCU self tests [ 1.505292][ T0] Running RCU synchronous self tests [ 1.505296][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.505300][ T0] rcu: RCU lockdep checking is enabled. [ 1.505304][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 1.505310][ T0] rcu: RCU priority boosting: priority 1 delay 500 ms. [ 1.505316][ T0] rcu: RCU callback double-/use-after-free debug is enabled. [ 1.505320][ T0] rcu: RCU_SOFTIRQ processing moved to rcuc kthreads. [ 1.505323][ T0] rcu: RCU debug extended QS entry/exit. [ 1.505327][ T0] No expedited grace period (rcu_normal_after_boot). [ 1.505331][ T0] Trampoline variant of Tasks RCU enabled. [ 1.505334][ T0] Tracing variant of Tasks RCU enabled. [ 1.505338][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.505343][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.505515][ T0] Running RCU synchronous self tests [ 1.505549][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2. [ 1.674566][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.675747][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 1.676515][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000 [ 1.678498][ T0] Console: colour VGA+ 80x25 [ 2.138070][ T0] printk: legacy console [ttyS0] enabled [ 2.138080][ T0] printk: legacy bootconsole [earlyser0] disabled [ 2.138160][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 2.138165][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 2.138169][ T0] ... MAX_LOCK_DEPTH: 48 [ 2.138173][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 2.138178][ T0] ... CLASSHASH_SIZE: 4096 [ 2.138182][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576 [ 2.138186][ T0] ... MAX_LOCKDEP_CHAINS: 1048576 [ 2.138190][ T0] ... CHAINHASH_SIZE: 524288 [ 2.138194][ T0] memory used by lock dependency info: 106625 kB [ 2.138199][ T0] memory used for stack traces: 8320 kB [ 2.138203][ T0] per task-struct memory footprint: 1920 bytes [ 2.138530][ T0] ACPI: Core revision 20251212 [ 2.140014][ T0] APIC: Switch to symmetric I/O mode setup [ 2.140771][ T0] x2apic enabled [ 2.145807][ T0] APIC: Switched APIC routing to: physical x2apic [ 2.152339][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 2.152649][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb63109b96, max_idle_ns: 440795265316 ns [ 2.152696][ T0] Calibrating delay loop (skipped) preset value.. 4399.99 BogoMIPS (lpj=21999980) [ 2.153400][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8 [ 2.153406][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4 [ 2.153471][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto [ 2.153490][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 2.153496][ T0] Spectre V2 : Mitigation: IBRS [ 2.153500][ T0] RETBleed: Mitigation: IBRS [ 2.153504][ T0] ITS: Mitigation: Aligned branch/return thunks [ 2.153508][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl [ 2.153512][ T0] MDS: Mitigation: Clear CPU buffers [ 2.153516][ T0] TAA: Mitigation: Clear CPU buffers [ 2.153520][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode [ 2.153525][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 2.153534][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT [ 2.153556][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 2.153612][ T0] active return thunk: its_return_thunk [ 2.153632][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit [ 2.153697][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 2.153707][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 2.153715][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 2.153724][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 2.153735][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. [ 2.559635][ T0] pid_max: default: 32768 minimum: 301 [ 2.561793][ T0] landlock: Up and running. [ 2.561802][ T0] Yama: becoming mindful. [ 2.562349][ T0] TOMOYO Linux initialized [ 2.563973][ T0] AppArmor: AppArmor initialized [ 2.567222][ T0] LSM support for eBPF active [ 2.574907][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage) [ 2.578304][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage) [ 2.578821][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.579027][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.582454][ T0] VFS: Finished mounting rootfs on nullfs [ 2.588767][ T0] Running RCU synchronous self tests [ 2.588780][ T0] Running RCU synchronous self tests [ 2.710423][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0) [ 2.712685][ T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only. [ 2.712685][ T1] signal: max sigframe size: 1776 [ 2.722818][ T1] rcu: Hierarchical SRCU implementation. [ 2.722838][ T1] rcu: Max phase no-delay instances is 1000. [ 2.832832][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level [ 2.982312][ T1] NMI watchdog: Perf NMI watchdog permanently disabled [ 2.992831][ T1] smp: Bringing up secondary CPUs ... [ 2.997748][ T1] smpboot: x86: Booting SMP configuration: [ 2.997757][ T1] .... node #0, CPUs: #1 [ 3.006705][ 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. [ 3.006725][ 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. [ 3.006740][ 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. [ 3.006865][ T1] smp: Brought up 2 nodes, 2 CPUs [ 3.006881][ T1] smpboot: Total of 2 processors activated (8799.99 BogoMIPS) [ 3.008786][ T1] Memory: 6463648K/8388204K available (167752K kernel code, 29745K rwdata, 41224K rodata, 25548K init, 129272K bss, 1736424K reserved, 0K cma-reserved) [ 3.015954][ T1] devtmpfs: initialized [ 3.034042][ T1] x86/mm: Memory block size: 128MB [ 3.133733][ T36] ------------[ cut here ]------------ [ 3.133750][ T36] class_for_each_device called for class 'devlink' before it was registered [ 3.133762][ T36] WARNING: drivers/base/class.c:416 at class_for_each_device+0x2d8/0x390, CPU#1: kworker/1:1/36 [ 3.133815][ T36] Modules linked in: [ 3.133834][ T36] CPU: 1 UID: 0 PID: 36 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 3.133859][ T36] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 3.133874][ T36] Workqueue: events deferred_probe_timeout_work_func [ 3.133907][ T36] RIP: 0010:class_for_each_device+0x2fc/0x390 [ 3.133944][ T36] Code: 8d 1d b8 f0 25 0a 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 62 d8 9b fc 49 8b 55 00 48 89 df 48 c7 c6 4e 55 6f 8d <67> 48 0f b9 3a b8 ea ff ff ff eb 1b e8 93 55 31 fc 49 81 c6 90 00 [ 3.133963][ T36] RSP: 0000:ffffc90000ab7a20 EFLAGS: 00010246 [ 3.133981][ T36] RAX: 1ffffffff178a814 RBX: ffffffff8fba5010 RCX: ffff88801e6f3e00 [ 3.133999][ T36] RDX: ffffffff8bc55560 RSI: ffffffff8d6f554e RDI: ffffffff8fba5010 [ 3.134016][ T36] RBP: ffffc90000ab7af8 R08: ffffc90000ab7a7f R09: 0000000000000000 [ 3.134032][ T36] R10: ffffc90000ab7a60 R11: fffff52000156f50 R12: ffffc90000ab7a60 [ 3.134049][ T36] R13: ffffffff8bc540a0 R14: 1ffff92000156f48 R15: dffffc0000000000 [ 3.134066][ T36] FS: 0000000000000000(0000) GS:ffff888125d84000(0000) knlGS:0000000000000000 [ 3.134085][ T36] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 3.134100][ T36] CR2: 0000000000000000 CR3: 000000000dfb8000 CR4: 00000000003506f0 [ 3.134119][ T36] Call Trace: [ 3.134127][ T36] [ 3.134139][ T36] ? __pfx_fw_devlink_no_driver+0x10/0x10 [ 3.134164][ T36] ? __pfx_class_for_each_device+0x10/0x10 [ 3.134201][ T36] ? lockdep_hardirqs_on+0x7a/0x110 [ 3.134239][ T36] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 3.134277][ T36] ? mutex_lock_nested+0x152/0x1d0 [ 3.134305][ T36] ? fw_devlink_drivers_done+0x1e/0x50 [ 3.134331][ T36] ? process_one_work+0x8be/0x1630 [ 3.134365][ T36] fw_devlink_drivers_done+0x35/0x50 [ 3.134387][ T36] deferred_probe_timeout_work_func+0x21/0x220 [ 3.134421][ T36] ? process_one_work+0x8be/0x1630 [ 3.134453][ T36] process_one_work+0x98b/0x1630 [ 3.134511][ T36] ? __pfx_process_one_work+0x10/0x10 [ 3.134543][ T36] ? do_raw_spin_lock+0x12b/0x2f0 [ 3.134584][ T36] worker_thread+0xb49/0x1140 [ 3.134630][ T36] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 3.134695][ T36] kthread+0x388/0x470 [ 3.134729][ T36] ? __pfx_worker_thread+0x10/0x10 [ 3.134762][ T36] ? __pfx_kthread+0x10/0x10 [ 3.134790][ T36] ret_from_fork+0x514/0xb70 [ 3.134822][ T36] ? __pfx_ret_from_fork+0x10/0x10 [ 3.134851][ T36] ? __switch_to+0xc79/0x1410 [ 3.134877][ T36] ? __pfx_kthread+0x10/0x10 [ 3.134905][ T36] ret_from_fork_asm+0x1a/0x30 [ 3.134956][ T36] [ 3.134968][ T36] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 3.134983][ T36] CPU: 1 UID: 0 PID: 36 Comm: kworker/1:1 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 3.135007][ T36] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 [ 3.135021][ T36] Workqueue: events deferred_probe_timeout_work_func [ 3.135051][ T36] Call Trace: [ 3.135059][ T36] [ 3.135068][ T36] vpanic+0x56c/0xa60 [ 3.135102][ T36] ? __pfx__printk+0x10/0x10 [ 3.135126][ T36] ? __pfx_vpanic+0x10/0x10 [ 3.135156][ T36] ? is_bpf_text_address+0x292/0x2b0 [ 3.135184][ T36] ? is_bpf_text_address+0x26/0x2b0 [ 3.135221][ T36] panic+0xc5/0xd0 [ 3.135254][ T36] ? __pfx_panic+0x10/0x10 [ 3.135295][ T36] ? ret_from_fork_asm+0x1a/0x30 [ 3.135320][ T36] __warn+0x315/0x4c0 [ 3.135343][ T36] ? class_for_each_device+0x2d8/0x390 [ 3.135376][ T36] ? class_for_each_device+0x2d8/0x390 [ 3.135401][ T36] __report_bug+0x339/0x540 [ 3.135421][ T36] ? class_for_each_device+0x2d8/0x390 [ 3.135446][ T36] ? __pfx___report_bug+0x10/0x10 [ 3.135476][ T36] report_bug_entry+0x19a/0x290 [ 3.135492][ T36] ? class_for_each_device+0x2fc/0x390 [ 3.135515][ T36] ? class_for_each_device+0x301/0x390 [ 3.135539][ T36] handle_bug+0xce/0x200 [ 3.135557][ T36] exc_invalid_op+0x1a/0x50 [ 3.135575][ T36] asm_exc_invalid_op+0x1a/0x20 [ 3.135591][ T36] RIP: 0010:class_for_each_device+0x2fc/0x390 [ 3.135620][ T36] Code: 8d 1d b8 f0 25 0a 4c 89 e8 48 c1 e8 03 42 80 3c 38 00 74 08 4c 89 ef e8 62 d8 9b fc 49 8b 55 00 48 89 df 48 c7 c6 4e 55 6f 8d <67> 48 0f b9 3a b8 ea ff ff ff eb 1b e8 93 55 31 fc 49 81 c6 90 00 [ 3.135633][ T36] RSP: 0000:ffffc90000ab7a20 EFLAGS: 00010246 [ 3.135646][ T36] RAX: 1ffffffff178a814 RBX: ffffffff8fba5010 RCX: ffff88801e6f3e00 [ 3.135659][ T36] RDX: ffffffff8bc55560 RSI: ffffffff8d6f554e RDI: ffffffff8fba5010 [ 3.135671][ T36] RBP: ffffc90000ab7af8 R08: ffffc90000ab7a7f R09: 0000000000000000 [ 3.135682][ T36] R10: ffffc90000ab7a60 R11: fffff52000156f50 R12: ffffc90000ab7a60 [ 3.135694][ T36] R13: ffffffff8bc540a0 R14: 1ffff92000156f48 R15: dffffc0000000000 [ 3.135726][ T36] ? __pfx_fw_devlink_no_driver+0x10/0x10 [ 3.135743][ T36] ? __pfx_class_for_each_device+0x10/0x10 [ 3.135769][ T36] ? lockdep_hardirqs_on+0x7a/0x110 [ 3.135794][ T36] ? _raw_spin_unlock_irqrestore+0x4c/0x80 [ 3.135820][ T36] ? mutex_lock_nested+0x152/0x1d0 [ 3.135839][ T36] ? fw_devlink_drivers_done+0x1e/0x50 [ 3.135857][ T36] ? process_one_work+0x8be/0x1630 [ 3.135880][ T36] fw_devlink_drivers_done+0x35/0x50 [ 3.135895][ T36] deferred_probe_timeout_work_func+0x21/0x220 [ 3.135919][ T36] ? process_one_work+0x8be/0x1630 [ 3.135941][ T36] process_one_work+0x98b/0x1630 [ 3.135979][ T36] ? __pfx_process_one_work+0x10/0x10 [ 3.136001][ T36] ? do_raw_spin_lock+0x12b/0x2f0 [ 3.136030][ T36] worker_thread+0xb49/0x1140 [ 3.136061][ T36] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 3.136097][ T36] kthread+0x388/0x470 [ 3.136115][ T36] ? __pfx_worker_thread+0x10/0x10 [ 3.136139][ T36] ? __pfx_kthread+0x10/0x10 [ 3.136158][ T36] ret_from_fork+0x514/0xb70 [ 3.136179][ T36] ? __pfx_ret_from_fork+0x10/0x10 [ 3.136199][ T36] ? __switch_to+0xc79/0x1410 [ 3.136219][ T36] ? __pfx_kthread+0x10/0x10 [ 3.136239][ T36] ret_from_fork_asm+0x1a/0x30 [ 3.136273][ T36]