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@10.128.0.8" "pwd"]: exit status 255 ssh: connect to host 10.128.0.8 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 086f95b8-7ada-47d5-ae28-d84de4582e6d 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 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8) #0 SMP PREEMPT_DYNAMIC 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 06/25/2026 [ 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 [ 0.000008][ T0] kvm-clock: using sched offset of 12303054076 cycles [ 0.001820][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.006997][ T0] tsc: Detected 2200.172 MHz processor [ 0.012234][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000 [ 0.014144][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs [ 0.016183][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.017467][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.023519][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f] [ 0.025287][ T0] Using GB pages for direct mapping [ 0.029333][ T0] ACPI: Early table checksum verification disabled [ 0.031203][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google) [ 0.033071][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.035399][ T0] ACPI: FACP 0x00000000BFFFF3B0 000114 (v06 Google GOOGFACP 00000001 GOOG 00000001) [ 0.037654][ T0] ACPI: DSDT 0x00000000BFFFD5C0 001DED (v02 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.039623][ T0] ACPI: FACS 0x00000000BFFFD580 000040 [ 0.041073][ T0] ACPI: FACS 0x00000000BFFFD580 000040 [ 0.042601][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.045060][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.047953][ T0] ACPI: SSDT 0x00000000BFFFF4D0 000914 (v02 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.051032][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.053153][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff3b0-0xbffff4c3] [ 0.054622][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd5c0-0xbffff3ac] [ 0.056382][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd580-0xbfffd5bf] [ 0.058219][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd580-0xbfffd5bf] [ 0.061116][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67] [ 0.064212][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65] [ 0.065807][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff4d0-0xbffffde3] [ 0.067956][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97] [ 0.069542][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.071180][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.072968][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff] [ 0.074825][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff] [ 0.077926][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff] [ 0.080611][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB) [ 0.082750][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB) [ 0.084657][ T0] NODE_DATA(0) allocated [mem 0x13fffb140-0x140000fff] [ 0.086459][ T0] NODE_DATA(1) allocated [mem 0x23fff7140-0x23fffcfff] [ 0.539991][ T0] KernelAddressSanitizer initialized (generic) [ 0.542116][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.542853][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.543921][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.545240][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.546689][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.548255][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.549596][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.551376][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.552659][ T0] CPU topo: Max. logical packages: 1 [ 0.553521][ T0] CPU topo: Max. logical nodes: 1 [ 0.554634][ T0] CPU topo: Num. nodes per package: 1 [ 0.555578][ T0] CPU topo: Max. logical dies: 1 [ 0.556346][ T0] CPU topo: Max. dies per package: 1 [ 0.557194][ T0] CPU topo: Max. threads per core: 2 [ 0.557959][ T0] CPU topo: Num. cores per package: 1 [ 0.558885][ T0] CPU topo: Num. threads per package: 2 [ 0.559825][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs [ 0.560998][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.562525][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff] [ 0.564244][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff] [ 0.565685][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices [ 0.566944][ T0] Booting paravirtualized kernel on KVM [ 0.567776][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.671563][ T0] Zone ranges: [ 0.672112][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.673225][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.675292][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.677417][ T0] Device empty [ 0.678539][ T0] Movable zone start for each node [ 0.680038][ T0] Early memory node ranges [ 0.680825][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.682104][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.684117][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff] [ 0.685943][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff] [ 0.688134][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff] [ 0.689427][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff] [ 0.755834][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.757488][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.830701][ T0] On node 0, zone Normal: 3 pages in unavailable ranges [ 0.903132][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2 [ 0.906251][ T0] percpu: Embedded 71 pages/cpu s251912 r8192 d30712 u1048576 [ 0.907783][ T0] kvm-guest: PV spinlocks enabled [ 0.908923][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.910783][ 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 \ [ 0.932258][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.941772][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space. [ 0.944875][ T0] random: crng init done [ 0.946177][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes [ 0.948168][ T0] software IO TLB: area num 2. [ 0.992928][ T0] Fallback order for Node 0: 0 1 [ 0.992954][ T0] Fallback order for Node 1: 1 0 [ 0.992969][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051 [ 0.997479][ T0] Policy zone: Normal [ 1.000073][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 1.002036][ T0] stackdepot: allocating hash table via alloc_large_system_hash [ 1.003415][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear) [ 1.012959][ T0] stackdepot: allocating space for 8192 stack pools via memblock [ 1.746417][ T0] ********************************************************** [ 1.749030][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.751211][ T0] ** ** [ 1.752632][ T0] ** This system shows unhashed kernel memory addresses ** [ 1.753925][ T0] ** via the console, logs, and other interfaces. This ** [ 1.755117][ T0] ** might reduce the security of your system. ** [ 1.756290][ T0] ** ** [ 1.757499][ T0] ** If you see this message and you are not debugging ** [ 1.758446][ T0] ** the kernel, report this immediately to your system ** [ 1.759860][ T0] ** administrator! ** [ 1.761471][ T0] ** serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-1 port 1 (session ID: 489dd91d942fc7f819219d1400a3e2599f9c3781a871bd349f2bee88a0cc6514, active connections: 1). ** [ 1.762977][ T0] ** Use hash_pointers=always to force this mode off ** [ 1.764077][ T0] ** ** [ 1.765283][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.766573][ T0] ********************************************************** [ 1.770578][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2 [ 1.882150][ T0] allocated 167772160 bytes of page_ext [ 1.883075][ T0] Node 0, zone DMA: page owner found early allocated 0 pages [ 1.898290][ T0] Node 0, zone DMA32: page owner found early allocated 21186 pages [ 1.904743][ T0] Node 0, zone Normal: page owner found early allocated 65 pages [ 1.917371][ T0] Node 1, zone Normal: page owner found early allocated 19847 pages [ 1.919553][ T0] Kernel/User page tables isolation: enabled [ 1.922185][ T0] Dynamic Preempt: full [ 1.924894][ T0] Running RCU self tests [ 1.925496][ T0] Running RCU synchronous self tests [ 1.926175][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.927230][ T0] rcu: RCU lockdep checking is enabled. [ 1.928037][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 1.929180][ T0] rcu: RCU callback double-/use-after-free debug is enabled. [ 1.930186][ T0] rcu: RCU debug extended QS entry/exit. [ 1.930921][ T0] All grace periods are expedited (rcu_expedited). [ 1.931902][ T0] Trampoline variant of Tasks RCU enabled. [ 1.932845][ T0] Tracing variant of Tasks RCU enabled. [ 1.933776][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.935368][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.937079][ T0] Running RCU synchronous self tests [ 1.938022][ T0] RCU Tasks: Setting shift to 1 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=2. [ 2.097380][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 2.099571][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 2.101045][ T0] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 2.103225][ T0] kfence: initialized - using 2097152 bytes for 255 objects at 0xffff88823be00000-0xffff88823c000000 [ 2.107089][ T0] Console: colour VGA+ 80x25 [ 2.108016][ T0] printk: legacy console [ttyS0] enabled [ 2.108016][ T0] printk: legacy console [ttyS0] enabled [ 2.110048][ T0] printk: legacy bootconsole [earlyser0] disabled [ 2.110048][ T0] printk: legacy bootconsole [earlyser0] disabled [ 2.112419][ T0] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar [ 2.113828][ T0] ... MAX_LOCKDEP_SUBCLASSES: 8 [ 2.114934][ T0] ... MAX_LOCK_DEPTH: 48 [ 2.116142][ T0] ... MAX_LOCKDEP_KEYS: 8192 [ 2.117574][ T0] ... CLASSHASH_SIZE: 4096 [ 2.118779][ T0] ... MAX_LOCKDEP_ENTRIES: 1048576 [ 2.119842][ T0] ... MAX_LOCKDEP_CHAINS: 1048576 [ 2.121050][ T0] ... CHAINHASH_SIZE: 524288 [ 2.122099][ T0] memory used by lock dependency info: 106625 kB [ 2.123386][ T0] memory used for stack traces: 8320 kB [ 2.124441][ T0] per task-struct memory footprint: 1920 bytes [ 2.126400][ T0] mempolicy: Enabling automatic NUMA balancing. Configure with numa_balancing= or the kernel.numa_balancing sysctl [ 2.128800][ T0] ACPI: Core revision 20260408 [ 2.130662][ T0] APIC: Switch to symmetric I/O mode setup [ 2.132212][ T0] x2apic enabled [ 2.137607][ T0] APIC: Switched APIC routing to: physical x2apic [ 2.147824][ T0] ..TIMER: vector=0x30 apic1=0 pin1=0 apic2=-1 pin2=-1 [ 2.149502][ T0] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x1fb6d54cfe9, max_idle_ns: 440795226702 ns [ 2.151697][ T0] Calibrating delay loop (skipped) preset value.. 4400.34 BogoMIPS (lpj=22001720) [ 2.153879][ T0] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8 [ 2.154801][ T0] Last level dTLB entries: 4KB 64, 2MB 32, 4MB 32, 1GB 4 [ 2.155872][ T0] mitigations: Enabled attack vectors: user_kernel, user_user, guest_host, guest_guest, SMT mitigations: auto [ 2.157928][ T0] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl [ 2.159173][ T0] Spectre V2 : Mitigation: IBRS [ 2.160041][ T0] RETBleed: Mitigation: IBRS [ 2.161770][ T0] ITS: Mitigation: Aligned branch/return thunks [ 2.162867][ T0] Spectre V2 : User space: Mitigation: STIBP via prctl [ 2.164616][ T0] MDS: Mitigation: Clear CPU buffers [ 2.165688][ T0] TAA: Mitigation: Clear CPU buffers [ 2.166865][ T0] MMIO Stale Data: Vulnerable: Clear CPU buffers attempted, no microcode [ 2.169528][ T0] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization [ 2.171704][ T0] Spectre V2 : Spectre v2 / SpectreRSB: Filling RSB on context switch and VMEXIT [ 2.174366][ T0] Spectre V2 : Enabling IBPB for BPF [ 2.176069][ T0] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier [ 2.178076][ T0] active return thunk: its_return_thunk [ 2.179320][ T0] Spectre V2 : Spectre BHI mitigation: SW BHB clearing on syscall and VM exit [ 2.181757][ T0] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 2.183306][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 2.185110][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 2.186608][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 2.188191][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. [ 2.490474][ T0] pid_max: default: 32768 minimum: 301 [ 2.493101][ T0] landlock: Up and running. [ 2.494166][ T0] Yama: becoming mindful. [ 2.495520][ T0] TOMOYO Linux initialized [ 2.498151][ T0] AppArmor: AppArmor initialized [ 2.502283][ T0] LSM support for eBPF active [ 2.511103][ T0] Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes, vmalloc hugepage) [ 2.515267][ T0] Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes, vmalloc hugepage) [ 2.518890][ T0] Mount-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.521899][ T0] Mountpoint-cache hash table entries: 16384 (order: 5, 131072 bytes, vmalloc) [ 2.525943][ T0] VFS: Finished mounting rootfs on nullfs [ 2.532737][ T0] Running RCU synchronous self tests [ 2.534083][ T0] Running RCU synchronous self tests [ 2.656720][ T1] smpboot: CPU0: Intel(R) Xeon(R) CPU @ 2.20GHz (family: 0x6, model: 0x4f, stepping: 0x0) [ 2.661683][ T1] Performance Events: unsupported CPU family 6 model 79 no PMU driver, software events only. [ 2.661683][ T1] signal: max sigframe size: 1776 [ 2.662358][ T1] rcu: Hierarchical SRCU implementation. [ 2.663970][ T1] rcu: Max phase no-delay instances is 1000. [ 2.666623][ T1] Timer migration: 1 hierarchy levels; 8 children per group; 0 crossnode level [ 2.723002][ T1] NMI watchdog: Perf NMI watchdog permanently disabled [ 2.725885][ T1] smp: Bringing up secondary CPUs ... [ 2.729603][ T1] smpboot: x86: Booting SMP configuration: [ 2.731207][ T1] .... node #0, CPUs: #1 [ 2.732697][ 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. [ 2.735293][ 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. [ 2.738635][ 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. [ 2.746085][ T1] smp: Brought up 2 nodes, 2 CPUs [ 2.747496][ T1] smpboot: Total of 2 processors activated (8800.68 BogoMIPS) [ 2.751023][ T1] Memory: 6456832K/8388204K available (177693K kernel code, 30339K rwdata, 41976K rodata, 27036K init, 120568K bss, 1741816K reserved, 0K cma-reserved) [ 2.755035][ T1] devtmpfs: initialized [ 2.755249][ T1] x86/mm: Memory block size: 128MB [ 2.816720][ T1] Running RCU synchronous self tests [ 2.818192][ T1] Running RCU synchronous self tests [ 2.822017][ T1] Running RCU Tasks wait API self tests [ 2.823673][ T1] Running RCU Tasks Trace wait API self tests [ 2.832114][ T1] posixtimers hash table entries: 1024 (order: 5, 73728 bytes, vmalloc) [ 2.834213][ T1] futex hash table entries: 256 (32768 bytes on 2 NUMA nodes, total 64 KiB, linear). [ 2.838899][ T1] xor: automatically using best checksumming function avx [ 2.845904][ T1] PM: RTC time: 17:27:04, date: 2026-07-20 [ 2.858152][ T1] NET: Registered PF_NETLINK/PF_ROUTE protocol family [ 2.867655][ T1] audit: initializing netlink subsys (disabled) [ 2.872435][ T30] audit: type=2000 audit(1784568424.208:1): state=initialized audit_enabled=0 res=1 [ 2.877393][ T1] thermal_sys: Registered thermal governor 'step_wise' [ 2.877709][ T1] cpuidle: using governor menu [ 2.877709][ T1] NET: Registered PF_QIPCRTR protocol family [ 2.882211][ T10] Callback from call_rcu_tasks_trace() invoked. [ 2.890135][ T1] dca service started, version 1.12.1 [ 2.892110][ T1] PCI: Using configuration type 1 for base access [ 2.912158][ T1] HugeTLB: registered 1.00 GiB page size, pre-allocated 0 pages [ 2.914269][ T1] HugeTLB: 16380 KiB vmemmap can be freed for a 1.00 GiB page [ 2.915479][ T1] HugeTLB: registered 2.00 MiB page size, pre-allocated 0 pages [ 2.917468][ T1] HugeTLB: 28 KiB vmemmap can be freed for a 2.00 MiB page [ 2.952042][ T1] raid6: using avx2x2 recovery algorithm [ 2.957707][ T1] ACPI: Added _OSI(Module Device) [ 2.958691][ T1] ACPI: Added _OSI(Processor Device) [ 2.959751][ T1] ACPI: Added _OSI(Processor Aggregator Device) [ 3.209985][ T1] ACPI: 2 ACPI AML tables successfully acquired and loaded [ 3.251969][ T1] ACPI: \_SB_: platform _OSC: OS support mask [000e7eee] [ 3.309364][ T1] ACPI: Interpreter enabled [ 3.312379][ T1] ACPI: PM: (supports S0 S3 S4 S5) [ 3.317546][ T1] ACPI: Using IOAPIC for interrupt routing [ 3.322309][ T1] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug [ 3.331700][ T1] PCI: Ignoring E820 reservations for host bridge windows [ 3.356165][ T1] ACPI: Enabled 16 GPEs in block 00 to 0F [ 3.766605][ T1] ACPI: PCI Root Bridge [PCI0] (domain 0000 [bus 00-ff]) [ 3.771830][ T1] acpi PNP0A03:00: _OSC: OS supports [ASPM ClockPM Segments MSI HPX-Type3] [ 3.781724][ T1] acpi PNP0A03:00: _OSC: not requesting OS control; OS requires [ExtendedConfig ASPM ClockPM MSI] [ 3.792112][ T1] acpi PNP0A03:00: _OSC: platform retains control of PCIe features (AE_ERROR) [ 3.802244][ T1] acpi PNP0A03:00: fail to add MMCONFIG information, can't access extended configuration space under this bridge [ 3.869696][ T1] PCI host bridge to bus 0000:00 [ 3.872167][ T1] pci_bus 0000:00: root bus resource [io 0x0000-0x0cf7 window] [ 3.881733][ T1] pci_bus 0000:00: root bus resource [io 0x0d00-0x0fff window] [ 3.889689][ T1] pci_bus 0000:00: root bus resource [io 0xc000-0xffff window] [ 3.891733][ T1] pci_bus 0000:00: root bus resource [io 0xa000-0xbfff window] [ 3.901745][ T1] pci_bus 0000:00: root bus resource [mem 0x000a0000-0x000bffff window] [ 3.911733][ T1] pci_bus 0000:00: root bus resource [mem 0xc0000000-0xfebfefff window] [ 3.921889][ T1] pci_bus 0000:00: root bus resource [bus 00-ff] [ 3.929021][ T1] pci 0000:00:00.0: [8086:1237] type 00 class 0x060000 conventional PCI endpoint [ 3.944698][ T1] pci 0000:00:01.0: [8086:7110] type 00 class 0x060100 conventional PCI endpoint [ 3.962203][ T1] pci 0000:00:01.3: [8086:7113] type 00 class 0x068000 conventional PCI endpoint [ 3.976856][ T1] pci 0000:00:01.3: quirk: [io 0xb000-0xb03f] claimed by PIIX4 ACPI [ 3.992849][ T1] pci 0000:00:03.0: [1af4:1004] type 00 class 0x000000 conventional PCI endpoint [ 4.006656][ T1] pci 0000:00:03.0: BAR 0 [io 0xc000-0xc03f] [ 4.011750][ T1] pci 0000:00:03.0: BAR 1 [mem 0xfe800000-0xfe80007f] [ 4.027166][ T1] pci 0000:00:04.0: [1af4:1000] type 00 class 0x020000 conventional PCI endpoint [ 4.041738][ T1] pci 0000:00:04.0: BAR 0 [io 0xc040-0xc07f] [ 4.047887][ T1] pci 0000:00:04.0: BAR 1 [mem 0xfe801000-0xfe80107f] [ 4.062862][ T1] pci 0000:00:05.0: [1ae0:a002] type 00 class 0x030000 conventional PCI endpoint [ 4.080246][ T1] pci 0000:00:05.0: BAR 0 [mem 0xfe000000-0xfe7fffff] [ 4.082566][ T1] pci 0000:00:05.0: Video device with shadowed ROM at [mem 0x000c0000-0x000dffff] [ 4.106617][ T1] pci 0000:00:06.0: [1af4:1002] type 00 class 0x00ff00 conventional PCI endpoint [ 4.116858][ T1] pci 0000:00:06.0: BAR 0 [io 0xc080-0xc09f] [ 4.134508][ T1] pci 0000:00:07.0: [1af4:1005] type 00 class 0x00ff00 conventional PCI endpoint [ 4.145990][ T1] pci 0000:00:07.0: BAR 0 [io 0xc0a0-0xc0bf] [ 4.151745][ T1] pci 0000:00:07.0: BAR 1 [mem 0xfe802000-0xfe80203f] [ 4.216730][ T1] ACPI: PCI: Interrupt link LNKA configured for IRQ 10 [ 4.233781][ T1] ACPI: PCI: Interrupt link LNKB configured for IRQ 10 [ 4.248338][ T1] ACPI: PCI: Interrupt link LNKC configured for IRQ 11 [ 4.267876][ T1] ACPI: PCI: Interrupt link LNKD configured for IRQ 11 [ 4.277707][ T1] ACPI: PCI: Interrupt link LNKS configured for IRQ 9 [ 4.331782][ T1] iommu: Default domain type: Translated [ 4.337555][ T1] iommu: DMA domain TLB invalidation policy: lazy mode [ 4.352545][ T1] SCSI subsystem initialized [ 4.363442][ T1] ACPI: bus type USB registered [ 4.369283][ T1] usbcore: registered new interface driver usbfs [ 4.372466][ T1] usbcore: registered new interface driver hub [ 4.382138][ T1] usbcore: registered new device driver usb [ 4.394085][ T1] mc: Linux media interface: v0.10 [ 4.399701][ T1] videodev: Linux video capture interface: v2.00 [ 4.403352][ T1] pps_core: LinuxPPS API ver. 1 registered [ 4.411717][ T1] pps_core: Software ver. 5.3.6 - Copyright 2005-2007 Rodolfo Giometti [ 4.421927][ T1] PTP clock support registered [ 4.442154][ T1] EDAC MC: Ver: 3.0.0 [ 4.459407][ T1] Advanced Linux Sound Architecture Driver Initialized. [ 4.477349][ T1] Bluetooth: Core ver 2.22 [ 4.482035][ T1] NET: Registered PF_BLUETOOTH protocol family [ 4.488746][ T1] Bluetooth: HCI device and connection manager initialized [ 4.491875][ T1] Bluetooth: HCI socket layer initialized [ 4.501789][ T1] Bluetooth: L2CAP socket layer initialized [ 4.508117][ T1] Bluetooth: SCO socket layer initialized [ 4.511880][ T1] NET: Registered PF_ATMPVC protocol family [ 4.522276][ T1] NetLabel: Initializing [ 4.526809][ T1] NetLabel: domain hash size = 128 [ 4.531751][ T1] NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO [ 4.539287][ T1] NetLabel: unlabeled traffic allowed by default [ 4.545755][ T1] nfc: nfc_init: NFC Core ver 0.1 [ 4.552678][ T1] NET: Registered PF_NFC protocol family [ 4.561938][ T1] mctp: management component transport protocol core [ 4.568729][ T1] NET: Registered PF_MCTP protocol family [ 4.572335][ T1] PCI: Using ACPI for IRQ routing [ 4.577674][ T1] e820: register RAM buffer resource [mem 0x0009fc00-0x0009ffff] [ 4.581842][ T1] e820: register RAM buffer resource [mem 0xbfffd000-0xbfffffff] [ 4.593047][ T1] pci 0000:00:05.0: vgaarb: setting as boot VGA device [ 4.599957][ T1] pci 0000:00:05.0: vgaarb: bridge control possible [ 4.601683][ T1] pci 0000:00:05.0: vgaarb: VGA device added: decodes=io+mem,owns=io+mem,locks=none [ 4.601728][ T1] vgaarb: loaded [ 4.616213][ T1] clocksource: Switched to clocksource kvm-clock [ 4.629525][ T1] VFS: Disk quotas dquot_6.6.0 [ 4.635444][ T1] VFS: Dquot-cache hash table entries: 512 (4096 bytes) [ 4.657796][ T1] netfs: FS-Cache loaded [ 4.665011][ T1] CacheFiles: Loaded [ 4.671519][ T1] TOMOYO: 2.6.0 [ 4.675149][ T1] Mandatory Access Control activated. [ 4.689064][ T1] AppArmor: AppArmor Filesystem Enabled [ 4.697242][ T1] pnp: PnP ACPI init [ 4.766451][ T1] pnp: PnP ACPI: found 6 devices [ 4.877980][ T1] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns [ 4.890799][ T1] NET: Registered PF_INET protocol family [ 4.900337][ T1] IP idents hash table entries: 131072 (order: 8, 1048576 bytes, vmalloc) [ 4.921933][ T1] tcp_listen_portaddr_hash hash table entries: 4096 (order: 7, 294912 bytes, vmalloc) [ 4.932725][ T1] Table-perturb hash table entries: 65536 (order: 6, 262144 bytes, vmalloc) [ 4.943324][ T1] TCP established hash table entries: 65536 (order: 7, 524288 bytes, vmalloc) [ 4.967310][ T1] TCP bind hash table entries: 65536 (order: 12, 9437184 bytes, vmalloc hugepage) [ 4.983717][ T1] TCP: Hash tables configured (established 65536 bind 65536) [ 4.995389][ T1] MPTCP token hash table entries: 8192 (order: 8, 720896 bytes, vmalloc) [ 5.006568][ T1] UDP hash table entries: 4096 (order: 8, 1048576 bytes, vmalloc) [ 5.017549][ T1] NET: Registered PF_UNIX/PF_LOCAL protocol family [ 5.032470][ T1] RPC: Registered named UNIX socket transport module. [ 5.039883][ T1] RPC: Registered udp transport module. [ 5.045763][ T1] RPC: Registered tcp transport module. [ 5.051615][ T1] RPC: Registered tcp-with-tls transport module. [ 5.058465][ T1] RPC: Registered tcp NFSv4.1 backchannel transport module. [ 5.070626][ T1] NET: Registered PF_XDP protocol family [ 5.077815][ T1] pci_bus 0000:00: resource 4 [io 0x0000-0x0cf7 window] [ 5.085325][ T1] pci_bus 0000:00: resource 5 [io 0x0d00-0x0fff window] [ 5.093336][ T1] pci_bus 0000:00: resource 6 [io 0xc000-0xffff window] [ 5.100524][ T1] pci_bus 0000:00: resource 7 [io 0xa000-0xbfff window] [ 5.108235][ T1] pci_bus 0000:00: resource 8 [mem 0x000a0000-0x000bffff window] [ 5.116507][ T1] pci_bus 0000:00: resource 9 [mem 0xc0000000-0xfebfefff window] [ 5.127068][ T1] pci 0000:00:00.0: Limiting direct PCI/PCI transfers [ 5.134348][ T1] PCI: CLS 0 bytes, default 64 [ 5.148386][ T1] PCI-DMA: Using software bounce buffering for IO (SWIOTLB) [ 5.156073][ T1] software IO TLB: mapped [mem 0x00000000b4600000-0x00000000b8600000] (64MB) [ 5.166615][ T1] ACPI: bus type thunderbolt registered [ 5.178957][ T58] kworker/u8:3 (58) used greatest stack depth: 28232 bytes left [ 5.184397][ T1] RAPL PMU: API unit is 2^-32 Joules, 0 fixed counters, 10737418240 ms ovfl timer [ 5.187844][ T57] kworker/u8:3 (57) used greatest stack depth: 27536 bytes left [ 5.234667][ T1] kvm_amd: CPU 0 isn't AMD or Hygon [ 5.240032][ T1] clocksource: tsc: mask: 0xffffffffffffffff max_cycles: 0x1fb6d54cfe9, max_idle_ns: 440795226702 ns [ 5.251807][ T1] clocksource: Switched to clocksource tsc [ 5.264138][ T62] kworker/u8:3 (62) used greatest stack depth: 27240 bytes left [ 5.307956][ T1] Initialise system trusted keyrings [ 5.316238][ T1] workingset: timestamp_bits=40 (anon: 35) max_order=21 bucket_order=0 (anon: 0) [ 5.336894][ T1] DLM installed [ 5.348468][ T1] squashfs: version 4.0 (2009/01/31) Phillip Lougher [ 5.365300][ T1] NFS: Registering the id_resolver key type [ 5.371712][ T1] Key type id_resolver registered [ 5.377082][ T1] Key type id_legacy registered [ 5.383268][ T1] nfs4filelayout_init: NFSv4 File Layout Driver Registering... [ 5.391227][ T1] nfs4flexfilelayout_init: NFSv4 Flexfile Layout Driver Registering... [ 5.404551][ T1] smbdirect: subsystem loading... [ 5.419856][ T1] smbdirect: subsystem loaded [ 5.440140][ T1] Key type cifs.spnego registered [ 5.445676][ T1] Key type cifs.idmap registered [ 5.466803][ T1] ntfs3: Enabled Linux POSIX ACLs support [ 5.473741][ T1] ntfs3: Read-only LZX/Xpress compression included [ 5.482112][ T1] jffs2: version 2.2. (NAND) (SUMMARY) © 2001-2006 Red Hat, Inc. [ 5.493374][ T1] romfs: ROMFS MTD (C) 2007 Red Hat, Inc. [ 5.499888][ T1] QNX4 filesystem 0.2.3 registered. [ 5.505404][ T1] qnx6: QNX6 filesystem 1.0.0 registered. [ 5.512948][ T1] fuse: init (API version 7.45) [ 5.521797][ T113] kworker/u8:4 (113) used greatest stack depth: 26896 bytes left [ 5.522603][ T1] orangefs_debugfs_init: called with debug mask: :none: :0: [ 5.539714][ T1] orangefs_init: module version upstream loaded [ 5.547533][ T1] JFS: nTxBlock = 8192, nTxLock = 65536 [ 5.567703][ T1] SGI XFS with ACLs, security attributes, realtime, scrub, repair, quota, no debug enabled [ 5.586474][ T1] 9p: Installing v9fs 9p2000 file system support [ 5.593973][ T1] NILFS version 2 loaded [ 5.598399][ T1] befs: version: 0.9.3 [ 5.603872][ T1] ocfs2: Registered cluster interface o2cb [ 5.610797][ T1] ocfs2: Registered cluster interface user [ 5.618006][ T1] OCFS2 User DLM kernel interface loaded [ 5.652698][ T1] gfs2: GFS2 installed [ 5.675405][ T1] ceph: loaded (mds proto 32) [ 5.699927][ T1] NET: Registered PF_ALG protocol family [ 5.707180][ T1] async_tx: api initialized (async) [ 5.712797][ T1] Key type asymmetric registered [ 5.718066][ T1] Asymmetric key parser 'x509' registered [ 5.724612][ T1] Asymmetric key parser 'pkcs8' registered [ 5.730512][ T1] Key type pkcs7_test registered [ 5.736539][ T1] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 239) [ 5.746868][ T1] io scheduler mq-deadline registered [ 5.752587][ T1] io scheduler kyber registered [ 5.758187][ T1] io scheduler bfq registered [ 5.765669][ T1] raid6: skipped pq benchmark and selected avx2x4 [ 5.806164][ T1] input: Power Button as /devices/platform/LNXPWRBN:00/input/input0 [ 5.816634][ T1] ACPI: button: Power Button [PWRF] [ 5.827066][ T1] input: Sleep Button as /devices/platform/LNXSLPBN:00/input/input1 [ 5.839168][ T1] ACPI: button: Sleep Button [SLPF] [ 5.879187][ T1] ioatdma: Intel(R) QuickData Technology Driver 5.00 [ 5.917737][ T10] ACPI: \_SB_.LNKC: Enabled at IRQ 11 [ 5.925605][ T10] virtio-pci 0000:00:03.0: virtio_pci: leaving for legacy driver [ 5.976412][ T10] ACPI: \_SB_.LNKD: Enabled at IRQ 10 [ 5.982440][ T10] virtio-pci 0000:00:04.0: virtio_pci: leaving for legacy driver [ 6.024695][ T10] ACPI: \_SB_.LNKB: Enabled at IRQ 10 [ 6.030572][ T10] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver [ 6.068886][ T10] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver [ 6.128462][ T218] kworker/u8:5 (218) used greatest stack depth: 26824 bytes left [ 6.863551][ T1] N_HDLC line discipline registered with maxframe=4096 [ 6.872923][ T1] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled [ 6.891190][ T1] 00:02: ttyS0 I/O:0x3f8 (irq = 4, base_baud = 115200) is a 16550A [ 6.923411][ T1] 00:03: ttyS1 I/O:0x2f8 (irq = 3, base_baud = 115200) is a 16550A [ 6.951690][ T1] 00:04: ttyS2 I/O:0x3e8 (irq = 6, base_baud = 115200) is a 16550A [ 6.979472][ T1] 00:05: ttyS3 I/O:0x2e8 (irq = 7, base_baud = 115200) is a 16550A [ 7.027268][ T1] Non-volatile memory driver v1.3 [ 7.066925][ T1] usbcore: registered new interface driver xillyusb [ 7.081839][ T1] ACPI: bus type drm_connector registered [ 7.100308][ T1] [drm] Initialized vgem 1.0.0 for vgem on minor 0 [ 7.113809][ T1] ------------[ cut here ]------------ [ 7.119619][ T1] [PLANE:35:plane-0] pixel format with alpha exposed but blend mode not setup [ 7.119650][ T1] WARNING: drivers/gpu/drm/drm_mode_config.c:873 at drm_mode_config_validate+0x1c6a/0x1e60, CPU#1: swapper/0/1 [ 7.141140][ T1] Modules linked in: [ 7.145220][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 7.154581][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026 [ 7.165765][ T1] RIP: 0010:drm_mode_config_validate+0x1cab/0x1e60 [ 7.173213][ T1] Code: 0f 85 ae 00 00 00 4d 8d 77 10 8b 6d 00 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 dd f3 a8 fc 49 8b 16 4c 89 ef 89 ee <67> 48 0f b9 3a eb 05 e8 19 dd 3a fc 49 bd 00 00 00 00 00 fc ff df [ 7.193973][ T1] RSP: 0000:ffffc90000067810 EFLAGS: 00010246 [ 7.200168][ T1] RAX: 1ffff11004e48408 RBX: dffffc0000000000 RCX: ffff88801daaddc0 [ 7.208381][ T1] RDX: ffff888026e2bc60 RSI: 0000000000000023 RDI: ffffffff9063cb10 [ 7.216656][ T1] RBP: 0000000000000023 R08: ffff888023a42b03 R09: 1ffff11004748560 [ 7.224665][ T1] R10: dffffc0000000000 R11: ffffed1004748561 R12: dffffc0000000000 [ 7.233205][ T1] R13: ffffffff9063cb10 R14: ffff888027242040 R15: ffff888027242030 [ 7.241296][ T1] FS: 0000000000000000(0000) GS:ffff888125034000(0000) knlGS:0000000000000000 [ 7.250232][ T1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 7.256941][ T1] CR2: 0000000000000000 CR3: 000000000e946000 CR4: 00000000003526f0 [ 7.265427][ T1] Call Trace: [ 7.268751][ T1] [ 7.271741][ T1] ? debugfs_create_file_full+0x3f/0x60 [ 7.277573][ T1] drm_dev_register+0x7c/0xd80 [ 7.282649][ T1] vkms_create+0x40d/0x4f0 [ 7.287214][ T1] ? __pfx_vkms_init+0x10/0x10 [ 7.292412][ T1] vkms_init+0x57/0x80 [ 7.296635][ T1] do_one_initcall+0x250/0x870 [ 7.301622][ T1] ? __pfx_vkms_init+0x10/0x10 [ 7.306510][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 7.311878][ T1] ? __pfx___schedule+0x10/0x10 [ 7.316778][ T1] ? __pfx___schedule+0x10/0x10 [ 7.321790][ T1] ? irqentry_exit+0x218/0x8f0 [ 7.326941][ T1] ? lockdep_hardirqs_on+0x7a/0x110 [ 7.332393][ T1] ? irqentry_exit+0x218/0x8f0 [ 7.337174][ T1] ? trace_irq_disable+0x3b/0x140 [ 7.342336][ T1] ? strlen+0x2e/0x70 [ 7.346319][ T1] ? next_arg+0x4a0/0x5e0 [ 7.350816][ T1] ? parameq+0x14d/0x170 [ 7.355231][ T1] ? parse_args+0x9c3/0xad0 [ 7.360076][ T1] ? rcu_is_watching+0x15/0xb0 [ 7.365204][ T1] do_initcall_level+0x10a/0x1a0 [ 7.370485][ T1] ? kernel_init+0x22/0x1d0 [ 7.375058][ T1] do_initcalls+0x59/0xa0 [ 7.379414][ T1] kernel_init_freeable+0x29d/0x3e0 [ 7.384734][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.389733][ T1] kernel_init+0x22/0x1d0 [ 7.394122][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.399105][ T1] ret_from_fork+0x514/0xb70 [ 7.403746][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 7.408868][ T1] ? __switch_to+0xc89/0x1420 [ 7.413588][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.418570][ T1] ret_from_fork_asm+0x1a/0x30 [ 7.423413][ T1] [ 7.426455][ T1] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 7.433370][ T1] CPU: 1 UID: 0 PID: 1 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 7.433370][ T1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/25/2026 [ 7.433370][ T1] Call Trace: [ 7.433370][ T1] [ 7.433370][ T1] vpanic+0x56c/0xa60 [ 7.460711][ T1] ? __pfx__printk+0x10/0x10 [ 7.460711][ T1] ? __pfx_vpanic+0x10/0x10 [ 7.460711][ T1] ? is_bpf_text_address+0x292/0x2b0 [ 7.460711][ T1] ? is_bpf_text_address+0x26/0x2b0 [ 7.460711][ T1] panic+0xc5/0xd0 [ 7.460711][ T1] ? __pfx_panic+0x10/0x10 [ 7.460711][ T1] ? ret_from_fork_asm+0x1a/0x30 [ 7.460711][ T1] __warn+0x315/0x4c0 [ 7.460711][ T1] ? drm_mode_config_validate+0x1c6a/0x1e60 [ 7.460711][ T1] ? drm_mode_config_validate+0x1c6a/0x1e60 [ 7.460711][ T1] __report_bug+0x276/0x570 [ 7.460711][ T1] ? look_up_lock_class+0x57/0x110 [ 7.520718][ T1] ? drm_mode_config_validate+0x1c6a/0x1e60 [ 7.520718][ T1] ? __pfx___report_bug+0x10/0x10 [ 7.520718][ T1] ? __pfx_inode_set_ctime_to_ts+0x10/0x10 [ 7.520718][ T1] ? lockdep_hardirqs_on+0x7a/0x110 [ 7.520718][ T1] ? seqcount_lockdep_reader_access+0xea/0x100 [ 7.520718][ T1] ? ktime_get_coarse_real_ts64_mg+0x1c5/0x1e0 [ 7.520718][ T1] report_bug_entry+0x19a/0x290 [ 7.520718][ T1] ? drm_mode_config_validate+0x1cab/0x1e60 [ 7.520718][ T1] ? drm_mode_config_validate+0x1cb0/0x1e60 [ 7.520718][ T1] handle_bug+0xce/0x200 [ 7.520718][ T1] exc_invalid_op+0x1a/0x50 [ 7.520718][ T1] asm_exc_invalid_op+0x1a/0x20 [ 7.520718][ T1] RIP: 0010:drm_mode_config_validate+0x1cab/0x1e60 [ 7.520718][ T1] Code: 0f 85 ae 00 00 00 4d 8d 77 10 8b 6d 00 4c 89 f0 48 c1 e8 03 80 3c 18 00 74 08 4c 89 f7 e8 dd f3 a8 fc 49 8b 16 4c 89 ef 89 ee <67> 48 0f b9 3a eb 05 e8 19 dd 3a fc 49 bd 00 00 00 00 00 fc ff df [ 7.520718][ T1] RSP: 0000:ffffc90000067810 EFLAGS: 00010246 [ 7.620703][ T1] RAX: 1ffff11004e48408 RBX: dffffc0000000000 RCX: ffff88801daaddc0 [ 7.620703][ T1] RDX: ffff888026e2bc60 RSI: 0000000000000023 RDI: ffffffff9063cb10 [ 7.620703][ T1] RBP: 0000000000000023 R08: ffff888023a42b03 R09: 1ffff11004748560 [ 7.620703][ T1] R10: dffffc0000000000 R11: ffffed1004748561 R12: dffffc0000000000 [ 7.620703][ T1] R13: ffffffff9063cb10 R14: ffff888027242040 R15: ffff888027242030 [ 7.620703][ T1] ? debugfs_create_file_full+0x3f/0x60 [ 7.620703][ T1] drm_dev_register+0x7c/0xd80 [ 7.620703][ T1] vkms_create+0x40d/0x4f0 [ 7.620703][ T1] ? __pfx_vkms_init+0x10/0x10 [ 7.620703][ T1] vkms_init+0x57/0x80 [ 7.620703][ T1] do_one_initcall+0x250/0x870 [ 7.620703][ T1] ? __pfx_vkms_init+0x10/0x10 [ 7.620703][ T1] ? __pfx_do_one_initcall+0x10/0x10 [ 7.620703][ T1] ? __pfx___schedule+0x10/0x10 [ 7.620703][ T1] ? __pfx___schedule+0x10/0x10 [ 7.620703][ T1] ? irqentry_exit+0x218/0x8f0 [ 7.620703][ T1] ? lockdep_hardirqs_on+0x7a/0x110 [ 7.720714][ T1] ? irqentry_exit+0x218/0x8f0 [ 7.720714][ T1] ? trace_irq_disable+0x3b/0x140 [ 7.720714][ T1] ? strlen+0x2e/0x70 [ 7.720714][ T1] ? next_arg+0x4a0/0x5e0 [ 7.720714][ T1] ? parameq+0x14d/0x170 [ 7.720714][ T1] ? parse_args+0x9c3/0xad0 [ 7.720714][ T1] ? rcu_is_watching+0x15/0xb0 [ 7.720714][ T1] do_initcall_level+0x10a/0x1a0 [ 7.720714][ T1] ? kernel_init+0x22/0x1d0 [ 7.720714][ T1] do_initcalls+0x59/0xa0 [ 7.720714][ T1] kernel_init_freeable+0x29d/0x3e0 [ 7.720714][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.720714][ T1] kernel_init+0x22/0x1d0 [ 7.720714][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.720714][ T1] ret_from_fork+0x514/0xb70 [ 7.720714][ T1] ? __pfx_ret_from_fork+0x10/0x10 [ 7.720714][ T1] ? __switch_to+0xc89/0x1420 [ 7.720714][ T1] ? __pfx_kernel_init+0x10/0x10 [ 7.720714][ T1] ret_from_fork_asm+0x1a/0x30 [ 7.720714][ T1] [ 7.820730][ T1] Kernel Offset: disabled [ 7.820730][ T1] Rebooting in 86400 seconds..