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@10.128.0.128" "pwd"]: exit status 255 ssh: connect to host 10.128.0.128 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 633cdbc8-83d4-2ab1-e53f-fc3179553bbc 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 05/09/2026 [ 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 [ 0.000004][ T0] kvm-clock: using sched offset of 4921901545 cycles [ 0.000012][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.000032][ T0] tsc: Detected 2199.998 MHz processor [ 0.003925][ T0] e820: update [mem 0x00000000-0x00000fff] System RAM ==> device reserved [ 0.003940][ T0] e820: remove [mem 0x000a0000-0x000fffff] System RAM [ 0.003959][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000 [ 0.004008][ T0] MTRR map: 4 entries (3 fixed + 1 variable; max 19), built from 8 variable MTRRs [ 0.004020][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.004078][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.009073][ T0] found SMP MP-table at [mem 0x000f2890-0x000f289f] [ 0.009098][ T0] Using GB pages for direct mapping [ 0.012797][ T0] ACPI: Early table checksum verification disabled [ 0.012820][ T0] ACPI: RSDP 0x00000000000F2610 000014 (v00 Google) [ 0.012837][ T0] ACPI: RSDT 0x00000000BFFFFFB0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.012858][ T0] ACPI: FACP 0x00000000BFFFF370 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.012882][ T0] ACPI: DSDT 0x00000000BFFFD900 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.012900][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012913][ T0] ACPI: FACS 0x00000000BFFFD8C0 000040 [ 0.012927][ T0] ACPI: SRAT 0x00000000BFFFFEA0 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.012945][ T0] ACPI: APIC 0x00000000BFFFFDF0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.012962][ T0] ACPI: SSDT 0x00000000BFFFF470 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.012980][ T0] ACPI: WAET 0x00000000BFFFFE70 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.012995][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff370-0xbffff463] [ 0.013003][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd900-0xbffff363] [ 0.013010][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.013017][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd8c0-0xbfffd8ff] [ 0.013023][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffea0-0xbfffff67] [ 0.013029][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdf0-0xbffffe65] [ 0.013036][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff470-0xbffffdef] [ 0.013042][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe70-0xbffffe97] [ 0.013171][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.013181][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.013189][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff] [ 0.013199][ T0] NUMA: Node 0 [mem 0x00001000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00001000-0xbfffffff] [ 0.013211][ T0] NUMA: Node 0 [mem 0x00001000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00001000-0x23fffffff] [ 0.013234][ T0] Faking node 0 at [mem 0x0000000000001000-0x0000000140000fff] (5120MB) [ 0.013242][ T0] Faking node 1 at [mem 0x0000000140001000-0x000000023fffffff] (4095MB) [ 0.013336][ T0] NODE_DATA(0) allocated [mem 0x13fffac80-0x140000fff] [ 0.014078][ T0] NODE_DATA(1) allocated [mem 0x23fff6c80-0x23fffcfff] [ 0.293645][ T0] KernelAddressSanitizer initialized (generic) [ 0.294452][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.294486][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.294625][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.294639][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.294648][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.294656][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.294663][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.294683][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.294693][ T0] CPU topo: Max. logical packages: 1 [ 0.294698][ T0] CPU topo: Max. logical nodes: 1 [ 0.294701][ T0] CPU topo: Num. nodes per package: 1 [ 0.294709][ T0] CPU topo: Max. logical dies: 1 [ 0.294713][ T0] CPU topo: Max. dies per package: 1 [ 0.294725][ T0] CPU topo: Max. threads per core: 2 [ 0.294730][ T0] CPU topo: Num. cores per package: 1 [ 0.294734][ T0] CPU topo: Num. threads per package: 2 [ 0.294742][ T0] CPU topo: Allowing 2 present CPUs plus 0 hotplug CPUs [ 0.294849][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.294859][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x000fffff] [ 0.294867][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xffffffff] [ 0.294890][ T0] [gap 0xc0000000-0xfffbbfff] available for PCI devices [ 0.294896][ T0] Booting paravirtualized kernel on KVM [ 0.294907][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.424808][ T0] Zone ranges: [ 0.424818][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.424832][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.424841][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.424850][ T0] Device empty [ 0.424855][ T0] Movable zone start for each node [ 0.424859][ T0] Early memory node ranges [ 0.424862][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.424871][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.424879][ T0] node 0: [mem 0x0000000100000000-0x0000000140000fff] [ 0.424887][ T0] node 1: [mem 0x0000000140001000-0x000000023fffffff] [ 0.424897][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x0000000140000fff] [ 0.424926][ T0] Initmem setup node 1 [mem 0x0000000140001000-0x000000023fffffff] [ 0.424977][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.425279][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.492744][ T0] On node 0, zone Normal: 3 pages in unavailable ranges [ 0.557957][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2 [ 0.558626][ T0] percpu: Embedded 71 pages/cpu s253896 r8192 d28728 u1048576 [ 0.558652][ T0] pcpu-alloc: s253896 r8192 d28728 u1048576 alloc=1*2097152 [ 0.558665][ T0] pcpu-alloc: [0] 0 1 [ 0.558794][ T0] kvm-guest: PV spinlocks enabled [ 0.558804][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.558824][ 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 \ [ 0.558852][ T0] Kernel command line: comedi.comedi_num_legacy_minors=4 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.563292][ T0] Unknown kernel command line parameters "nbds_max=32", will be passed to user space. [ 0.563364][ T0] random: crng init done [ 0.563368][ T0] printk: log buffer data + meta data: 262144 + 917504 = 1179648 bytes [ 0.563568][ T0] software IO TLB: area num 2. [ 0.589180][ T0] Fallback order for Node 0: 0 1 [ 0.589200][ T0] Fallback order for Node 1: 1 0 [ 0.589214][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2097051 [ 0.589222][ T0] Policy zone: Normal [ 0.589893][ T0] mem auto-init: stack:all(zero), heap alloc:on, heap free:off [ 0.589901][ T0] stackdepot: allocating hash table via alloc_large_system_hash [ 0.589911][ T0] stackdepot hash table entries: 1048576 (order: 12, 16777216 bytes, linear) [ 0.594105][ T0] stackdepot: allocating space for 8192 stack pools via memblock [ 1.195520][ T0] ********************************************************** [ 1.195531][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.195535][ T0] ** ** [ 1.195538][ T0] ** This system shows unhashed kernel memory addresses ** [ 1.195542][ T0] ** via the console, logs, and other interfaces. This ** [ 1.195546][ T0] ** might reduce the security of your system. ** [ 1.195549][ T0] ** ** [ 1.195553][ T0] ** If you see this message and you are not debugging ** [ 1.195557][ T0] ** the kernel, report this immediately to your system ** [ 1.195560][ T0] ** administrator! ** [ 1.195564][ T0] ** ** [ 1.195567][ T0] ** Use hash_pointers=always to force this mode off ** [ 1.195571][ T0] ** ** [ 1.195575][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 1.195578][ T0] ********************************************************** [ 1.196500][ T0] page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x13fe2c [ 1.196514][ T0] head: order:2 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 [ 1.196522][ T0] flags: 0x100000000000040(head|node=0|zone=2) [ 1.196536][ T0] raw: 0100000000000040 dead000000000100 dead000000000122 0000000000000000 [ 1.196544][ T0] raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 1.196553][ T0] head: 0100000000000040 dead000000000100 dead000000000122 0000000000000000 [ 1.196561][ T0] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 [ 1.196570][ T0] head: 0100000000000002 ffffffffffffff01 00000000ffffffff 00000000ffffffff [ 1.196578][ T0] head: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000004 [ 1.196582][ T0] page dumped because: VM_BUG_ON_PAGE(1 && PageCompound(page)) [ 1.196688][ T0] ------------[ cut here ]------------ [ 1.196691][ T0] kernel BUG at ./include/linux/page-flags.h:682! [ 1.196703][ T0] Oops: invalid opcode: 0000 [#1] SMP KASAN PTI [ 1.196716][ T0] CPU: 0 UID: 0 PID: 0 Comm: swapper Not tainted syzkaller #0 PREEMPT_{RT,(undef)} [ 1.196727][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 [ 1.serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-2 port 1 (session ID: 498c1a9906e300be052d71eabeab2bbcd73326bd7b6bfa419b6322e4ca7df0da, active connections: 1). 196734][ T0] RIP: 0010:post_alloc_hook+0x287/0x310 [ 1.196752][ T0] Code: ff ff 89 da be 01 00 00 00 48 c7 c7 40 50 0f 8e e8 4e 1a cb 02 e9 c5 fe ff ff 4c 89 ef 48 c7 c6 80 ee 5a 8b e8 9a 14 06 ff 90 <0f> 0b 31 ed f7 44 24 04 00 01 00 00 0f 84 8e fd ff ff e9 86 fd ff [ 1.196761][ T0] RSP: 0000:ffffffff8dc078e0 EFLAGS: 00010046 [ 1.196771][ T0] RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff8dcfef40 [ 1.196777][ T0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 1.196783][ T0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 1.196789][ T0] R10: dffffc0000000000 R11: ffffed10170c4903 R12: dffffc0000000000 [ 1.196796][ T0] R13: ffffea0004ff8b00 R14: 1ffffd40009ff160 R15: 0000000000000000 [ 1.196803][ T0] FS: 0000000000000000(0000) GS:ffff888125ec5000(0000) knlGS:0000000000000000 [ 1.196811][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.196818][ T0] CR2: ffff88823ffff000 CR3: 000000000ddb8000 CR4: 00000000000100b0 [ 1.196828][ T0] Call Trace: [ 1.196832][ T0] [ 1.196838][ T0] get_page_from_freelist+0x3081/0x3320 [ 1.196851][ T0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 1.196868][ T0] ? stack_trace_save+0xa9/0x100 [ 1.196881][ T0] ? prepare_alloc_pages+0x22a/0x6b0 [ 1.196898][ T0] __alloc_frozen_pages_noprof+0x194/0x380 [ 1.196908][ T0] ? __pfx___alloc_frozen_pages_noprof+0x10/0x10 [ 1.196919][ T0] ? __pfx_policy_nodemask+0x10/0x10 [ 1.196930][ T0] ? rt_mutex_slowunlock+0x4a7/0x8b0 [ 1.196946][ T0] __alloc_pages_mpol+0xe0/0x390 [ 1.196957][ T0] allocate_slab+0x83/0x5e0 [ 1.196970][ T0] ___slab_alloc+0x160/0x930 [ 1.196982][ T0] ? do_kmem_cache_create+0x8ae/0x9a0 [ 1.196993][ T0] __kmalloc_noprof+0x140/0x7b0 [ 1.197008][ T0] ? do_kmem_cache_create+0x8ae/0x9a0 [ 1.197019][ T0] do_kmem_cache_create+0x8ae/0x9a0 [ 1.197029][ T0] ? rcu_is_watching+0x15/0xb0 [ 1.197039][ T0] create_boot_cache+0xbf/0x120 [ 1.197053][ T0] create_kmalloc_cache+0x41/0xb0 [ 1.197067][ T0] new_kmalloc_cache+0xd4/0x180 [ 1.197079][ T0] create_kmalloc_caches+0x14/0x50 [ 1.197091][ T0] kmem_cache_init+0x14a/0x1e0 [ 1.197106][ T0] mm_core_init+0x7e/0xb0 [ 1.197115][ T0] start_kernel+0x162/0x3e0 [ 1.197130][ T0] x86_64_start_reservations+0x24/0x30 [ 1.197142][ T0] x86_64_start_kernel+0x143/0x1c0 [ 1.197154][ T0] common_startup_64+0x13e/0x157 [ 1.197167][ T0] [ 1.197171][ T0] Modules linked in: [ 1.197178][ T0] ---[ end trace 0000000000000000 ]--- [ 1.197183][ T0] RIP: 0010:post_alloc_hook+0x287/0x310 [ 1.197197][ T0] Code: ff ff 89 da be 01 00 00 00 48 c7 c7 40 50 0f 8e e8 4e 1a cb 02 e9 c5 fe ff ff 4c 89 ef 48 c7 c6 80 ee 5a 8b e8 9a 14 06 ff 90 <0f> 0b 31 ed f7 44 24 04 00 01 00 00 0f 84 8e fd ff ff e9 86 fd ff [ 1.197205][ T0] RSP: 0000:ffffffff8dc078e0 EFLAGS: 00010046 [ 1.197213][ T0] RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff8dcfef40 [ 1.197219][ T0] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 1.197225][ T0] RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 [ 1.197230][ T0] R10: dffffc0000000000 R11: ffffed10170c4903 R12: dffffc0000000000 [ 1.197237][ T0] R13: ffffea0004ff8b00 R14: 1ffffd40009ff160 R15: 0000000000000000 [ 1.197244][ T0] FS: 0000000000000000(0000) GS:ffff888125ec5000(0000) knlGS:0000000000000000 [ 1.197252][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.197259][ T0] CR2: ffff88823ffff000 CR3: 000000000ddb8000 CR4: 00000000000100b0 [ 1.197268][ T0] Kernel panic - not syncing: Fatal exception