WARNING in kfence_protect ACPI: PM-Timer IO Port: 0xb008 ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) ACPI: Using ACPI (MADT) for SMP configuration information smpboot: Allowing 2 CPUs, 0 hotplug CPUs PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [mem 0xc0000000-0xfffbbfff] available for PCI devices Booting paravirtualized kernel on KVM clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2 percpu: Embedded 70 pages/cpu s248968 r8192 d29560 u1048576 kvm-guest: PV spinlocks enabled PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) Fallback order for Node 0: 0 1 Fallback order for Node 1: 1 0 Built 2 zonelists, mobility grouping on. Total pages: 2064125 Policy zone: Normal 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 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=16 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=16 rose.rose_ndevs=16 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=8 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 Unknown kernel command line parameters "spec_store_bypass_disable=prctl BOOT_IMAGE=/boot/bzImage", will be passed to user space. random: crng init done mem auto-init: stack:off, heap alloc:on, heap free:off stackdepot hash table entries: 1048576 (order: 11, 8388608 bytes, linear) software IO TLB: area num 2. Memory: 6816860K/8388204K available (151552K kernel code, 36308K rwdata, 31528K rodata, 2900K init, 33472K bss, 1571088K reserved, 0K cma-reserved) SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2 Dynamic Preempt: full Running RCU self tests rcu: Preemptible hierarchical RCU implementation. rcu: RCU lockdep checking is enabled. rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. rcu: RCU callback double-/use-after-free debug is enabled. rcu: RCU debug extended QS entry/exit. All grace periods are expedited (rcu_expedited). Trampoline variant of Tasks RCU enabled. Tracing variant of Tasks RCU enabled. rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 rcu: srcu_init: Setting srcu_struct sizes based on contention. ------------[ cut here ]------------ WARNING: CPU: 0 PID: 0 at arch/x86/include/asm/kfence.h:46 kfence_protect_page arch/x86/include/asm/kfence.h:46 [inline] WARNING: CPU: 0 PID: 0 at arch/x86/include/asm/kfence.h:46 kfence_protect+0x9e/0x190 mm/kfence/core.c:234 Modules linked in: CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rc5-next-20221118-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:kfence_protect_page arch/x86/include/asm/kfence.h:46 [inline] RIP: 0010:kfence_protect+0x9e/0x190 mm/kfence/core.c:234 Code: 48 85 c0 74 20 48 89 c3 e8 8f 3f b2 ff 44 8b 74 24 20 bf 01 00 00 00 44 89 f6 e8 2d 3c b2 ff 41 83 fe 01 74 55 e8 72 3f b2 ff <0f> 0b 0f 0b c6 05 00 d0 a6 0c 00 45 31 ed c6 05 f5 cf a6 0c 01 e8 RSP: 0000:ffffffff8c407da8 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffff888012001040 RCX: 0000000000000000 RDX: ffffffff8c4bc980 RSI: ffffffff81ce6aee RDI: 0000000000000005 RBP: ffff88823bc00000 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000003 R11: 0000000000000000 R12: 1ffffffff1880fb5 R13: dffffc0000000000 R14: 0000000000000003 R15: ffff88823bc00000 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffff88823ffff000 CR3: 000000000c48e000 CR4: 00000000000406b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: kfence_init_pool+0x387/0x620 mm/kfence/core.c:582 kfence_init_pool_early mm/kfence/core.c:615 [inline] kfence_init+0x56/0x2db mm/kfence/core.c:852 start_kernel+0x26e/0x470 init/main.c:1059 secondary_startup_64_no_verify+0xce/0xdb failed to run ["ssh" "-p" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "root@10.128.0.119" "pwd"]: exit status 255 ssh: connect to host 10.128.0.119 port 22: Connection timed out Pseudo-terminal will not be allocated because stdin is not a terminal. Warning: Permanently added '[ssh-serialport.googleapis.com]:9600,[216.239.38.127]:9600' (RSA) to the list of known hosts. serialport: Connected to syzkaller.us-central1-c.ci-upstream-linux-next-kasan-gce-root-test-job-test-job-2 port 1 (session ID: d71f1a8407948726fdd524bc21c7ddfa06167a97ba00f82dffa1f8564a95b08d, active connections: 1). 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 5fafaa8f-8474-0792-0122-c42702b244e2 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 0x000f2450: 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 6.1.0-rc5-next-20221118-syzkaller (syzkaller@syzkaller) (gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #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/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers' [ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers' [ 0.000000][ T0] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers' [ 0.000000][ T0] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 [ 0.000000][ T0] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. [ 0.000000][ T0] signal: max sigframe size: 1776 [ 0.000000][ T0] BIOS-provided physical RAM map: [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable [ 0.000000][ T0] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x0000000000100000-0x00000000bfffcfff] usable [ 0.000000][ T0] BIOS-e820: [mem 0x00000000bfffd000-0x00000000bfffffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] reserved [ 0.000000][ T0] BIOS-e820: [mem 0x0000000100000000-0x000000023fffffff] usable [ 0.000000][ T0] printk: bootconsole [earlyser0] enabled [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] ERROR: earlyprintk= earlyser already used [ 0.000000][ T0] ********************************************************** [ 0.000000][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 0.000000][ T0] ** ** [ 0.000000][ T0] ** This system shows unhashed kernel memory addresses ** [ 0.000000][ T0] ** via the console, logs, and other interfaces. This ** [ 0.000000][ T0] ** might reduce the security of your system. ** [ 0.000000][ T0] ** ** [ 0.000000][ T0] ** If you see this message and you are not debugging ** [ 0.000000][ T0] ** the kernel, report this immediately to your system ** [ 0.000000][ T0] ** administrator! ** [ 0.000000][ T0] ** ** [ 0.000000][ T0] ** NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE ** [ 0.000000][ T0] ********************************************************** [ 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] SMBIOS 2.4 present. [ 0.000000][ T0] DMI: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 0.000000][ T0] Hypervisor detected: KVM [ 0.000000][ T0] kvm-clock: Using msrs 4b564d01 and 4b564d00 [ 0.000007][ T0] kvm-clock: using sched offset of 3895505356 cycles [ 0.001160][ T0] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns [ 0.003570][ T0] tsc: Detected 2199.998 MHz processor [ 0.008113][ T0] last_pfn = 0x240000 max_arch_pfn = 0x400000000 [ 0.009371][ T0] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT [ 0.010449][ T0] last_pfn = 0xbfffd max_arch_pfn = 0x400000000 [ 0.015385][ T0] found SMP MP-table at [mem 0x000f2710-0x000f271f] [ 0.016503][ T0] Using GB pages for direct mapping [ 0.018695][ T0] ACPI: Early table checksum verification disabled [ 0.019586][ T0] ACPI: RSDP 0x00000000000F2490 000014 (v00 Google) [ 0.020500][ T0] ACPI: RSDT 0x00000000BFFFFFA0 000038 (v01 Google GOOGRSDT 00000001 GOOG 00000001) [ 0.021822][ T0] ACPI: FACP 0x00000000BFFFF330 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) [ 0.023094][ T0] ACPI: DSDT 0x00000000BFFFD8C0 001A64 (v01 Google GOOGDSDT 00000001 GOOG 00000001) [ 0.024471][ T0] ACPI: FACS 0x00000000BFFFD880 000040 [ 0.025309][ T0] ACPI: FACS 0x00000000BFFFD880 000040 [ 0.026211][ T0] ACPI: SRAT 0x00000000BFFFFE60 0000C8 (v03 Google GOOGSRAT 00000001 GOOG 00000001) [ 0.027518][ T0] ACPI: APIC 0x00000000BFFFFDB0 000076 (v05 Google GOOGAPIC 00000001 GOOG 00000001) [ 0.029154][ T0] ACPI: SSDT 0x00000000BFFFF430 000980 (v01 Google GOOGSSDT 00000001 GOOG 00000001) [ 0.030647][ T0] ACPI: WAET 0x00000000BFFFFE30 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) [ 0.031929][ T0] ACPI: Reserving FACP table memory at [mem 0xbffff330-0xbffff423] [ 0.033352][ T0] ACPI: Reserving DSDT table memory at [mem 0xbfffd8c0-0xbffff323] [ 0.034529][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf] [ 0.035695][ T0] ACPI: Reserving FACS table memory at [mem 0xbfffd880-0xbfffd8bf] [ 0.037105][ T0] ACPI: Reserving SRAT table memory at [mem 0xbffffe60-0xbfffff27] [ 0.038412][ T0] ACPI: Reserving APIC table memory at [mem 0xbffffdb0-0xbffffe25] [ 0.039627][ T0] ACPI: Reserving SSDT table memory at [mem 0xbffff430-0xbffffdaf] [ 0.040971][ T0] ACPI: Reserving WAET table memory at [mem 0xbffffe30-0xbffffe57] [ 0.043032][ T0] SRAT: PXM 0 -> APIC 0x00 -> Node 0 [ 0.044017][ T0] SRAT: PXM 0 -> APIC 0x01 -> Node 0 [ 0.044800][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00000000-0x0009ffff] [ 0.045923][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x00100000-0xbfffffff] [ 0.046961][ T0] ACPI: SRAT: Node 0 PXM 0 [mem 0x100000000-0x23fffffff] [ 0.047980][ T0] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff] [ 0.049843][ T0] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem 0x100000000-0x23fffffff] -> [mem 0x00000000-0x23fffffff] [ 0.052094][ T0] Faking node 0 at [mem 0x0000000000000000-0x000000013fffffff] (5120MB) [ 0.053322][ T0] Faking node 1 at [mem 0x0000000140000000-0x000000023fffffff] (4096MB) [ 0.054994][ T0] NODE_DATA(0) allocated [mem 0x13fffa000-0x13fffffff] [ 0.056738][ T0] NODE_DATA(1) allocated [mem 0x23fff7000-0x23fffcfff] [ 0.084729][ T0] Zone ranges: [ 0.085277][ T0] DMA [mem 0x0000000000001000-0x0000000000ffffff] [ 0.086319][ T0] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] [ 0.087349][ T0] Normal [mem 0x0000000100000000-0x000000023fffffff] [ 0.088299][ T0] Device empty [ 0.088942][ T0] Movable zone start for each node [ 0.089800][ T0] Early memory node ranges [ 0.090420][ T0] node 0: [mem 0x0000000000001000-0x000000000009efff] [ 0.091446][ T0] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] [ 0.092412][ T0] node 0: [mem 0x0000000100000000-0x000000013fffffff] [ 0.093465][ T0] node 1: [mem 0x0000000140000000-0x000000023fffffff] [ 0.094506][ T0] Initmem setup node 0 [mem 0x0000000000001000-0x000000013fffffff] [ 0.095646][ T0] Initmem setup node 1 [mem 0x0000000140000000-0x000000023fffffff] [ 0.096786][ T0] On node 0, zone DMA: 1 pages in unavailable ranges [ 0.096931][ T0] On node 0, zone DMA: 97 pages in unavailable ranges [ 0.131330][ T0] On node 0, zone Normal: 3 pages in unavailable ranges [ 0.386621][ T0] kasan: KernelAddressSanitizer initialized [ 0.390200][ T0] ACPI: PM-Timer IO Port: 0xb008 [ 0.391596][ T0] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1]) [ 0.393310][ T0] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23 [ 0.395046][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level) [ 0.396644][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level) [ 0.398153][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level) [ 0.399698][ T0] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level) [ 0.400996][ T0] ACPI: Using ACPI (MADT) for SMP configuration information [ 0.402995][ T0] smpboot: Allowing 2 CPUs, 0 hotplug CPUs [ 0.404294][ T0] PM: hibernation: Registered nosave memory: [mem 0x00000000-0x00000fff] [ 0.405936][ T0] PM: hibernation: Registered nosave memory: [mem 0x0009f000-0x0009ffff] [ 0.407613][ T0] PM: hibernation: Registered nosave memory: [mem 0x000a0000-0x000effff] [ 0.409547][ T0] PM: hibernation: Registered nosave memory: [mem 0x000f0000-0x000fffff] [ 0.410839][ T0] PM: hibernation: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] [ 0.412260][ T0] PM: hibernation: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] [ 0.413758][ T0] PM: hibernation: Registered nosave memory: [mem 0xfffbc000-0xffffffff] [ 0.415497][ T0] [mem 0xc0000000-0xfffbbfff] available for PCI devices [ 0.416764][ T0] Booting paravirtualized kernel on KVM [ 0.417583][ T0] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604462750000 ns [ 0.478795][ T0] setup_percpu: NR_CPUS:8 nr_cpumask_bits:2 nr_cpu_ids:2 nr_node_ids:2 [ 0.480902][ T0] percpu: Embedded 70 pages/cpu s248968 r8192 d29560 u1048576 [ 0.482684][ T0] kvm-guest: PV spinlocks enabled [ 0.483893][ T0] PV qspinlock hash table entries: 256 (order: 0, 4096 bytes, linear) [ 0.485733][ T0] Fallback order for Node 0: 0 1 [ 0.486873][ T0] Fallback order for Node 1: 1 0 [ 0.487740][ T0] Built 2 zonelists, mobility grouping on. Total pages: 2064125 [ 0.489393][ T0] Policy zone: Normal [ 0.490532][ 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 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=16 vivid.multiplanar=1,2,1,2,1,2,1,2,1,2,1,2,1,2,1,2 netrom.nr_ndevs=16 rose.rose_ndevs=16 smp.csd_lock_timeout=100000 watchdog_thresh=55 workqueue.watchdog_thresh=140 sysctl.net.core.netdev_unregister_timeout_secs=140 dummy_hcd.num=8 panic_on_warn=1 BOOT_IMAGE=/boot/bzImage root=/dev/sda1 console=ttyS0 [ 0.513597][ T0] Unknown kernel command line parameters "spec_store_bypass_disable=prctl BOOT_IMAGE=/boot/bzImage", will be passed to user space. [ 0.515871][ T0] random: crng init done [ 0.517927][ T0] mem auto-init: stack:off, heap alloc:on, heap free:off [ 0.521108][ T0] stackdepot hash table entries: 1048576 (order: 11, 8388608 bytes, linear) [ 0.522579][ T0] software IO TLB: area num 2. [ 1.198340][ T0] Memory: 6816860K/8388204K available (151552K kernel code, 36308K rwdata, 31528K rodata, 2900K init, 33472K bss, 1571088K reserved, 0K cma-reserved) [ 1.201392][ T0] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=2 [ 1.204765][ T0] Dynamic Preempt: full [ 1.206326][ T0] Running RCU self tests [ 1.206933][ T0] rcu: Preemptible hierarchical RCU implementation. [ 1.208047][ T0] rcu: RCU lockdep checking is enabled. [ 1.209531][ T0] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=2. [ 1.210664][ T0] rcu: RCU callback double-/use-after-free debug is enabled. [ 1.211833][ T0] rcu: RCU debug extended QS entry/exit. [ 1.212761][ T0] All grace periods are expedited (rcu_expedited). [ 1.213926][ T0] Trampoline variant of Tasks RCU enabled. [ 1.215009][ T0] Tracing variant of Tasks RCU enabled. [ 1.216138][ T0] rcu: RCU calculated value of scheduler-enlistment delay is 10 jiffies. [ 1.217927][ T0] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2 [ 1.254583][ T0] NR_IRQS: 4352, nr_irqs: 440, preallocated irqs: 16 [ 1.256189][ T0] rcu: srcu_init: Setting srcu_struct sizes based on contention. [ 1.259043][ T0] ------------[ cut here ]------------ [ 1.259992][ T0] WARNING: CPU: 0 PID: 0 at arch/x86/include/asm/kfence.h:46 kfence_protect+0x9e/0x190 [ 1.261677][ T0] Modules linked in: [ 1.262273][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rc5-next-20221118-syzkaller #0 [ 1.263716][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1.265541][ T0] RIP: 0010:kfence_protect+0x9e/0x190 [ 1.266325][ T0] Code: 48 85 c0 74 20 48 89 c3 e8 8f 3f b2 ff 44 8b 74 24 20 bf 01 00 00 00 44 89 f6 e8 2d 3c b2 ff 41 83 fe 01 74 55 e8 72 3f b2 ff <0f> 0b 0f 0b c6 05 00 d0 a6 0c 00 45 31 ed c6 05 f5 cf a6 0c 01 e8 [ 1.269590][ T0] RSP: 0000:ffffffff8c407da8 EFLAGS: 00010093 [ 1.270882][ T0] RAX: 0000000000000000 RBX: ffff888012001040 RCX: 0000000000000000 [ 1.272448][ T0] RDX: ffffffff8c4bc980 RSI: ffffffff81ce6aee RDI: 0000000000000005 [ 1.274043][ T0] RBP: ffff88823bc00000 R08: 0000000000000005 R09: 0000000000000001 [ 1.275817][ T0] R10: 0000000000000003 R11: 0000000000000000 R12: 1ffffffff1880fb5 [ 1.277154][ T0] R13: dffffc0000000000 R14: 0000000000000003 R15: ffff88823bc00000 [ 1.278285][ T0] FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 1.279949][ T0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1.281340][ T0] CR2: ffff88823ffff000 CR3: 000000000c48e000 CR4: 00000000000406b0 [ 1.282551][ T0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1.283898][ T0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1.285468][ T0] Call Trace: [ 1.285978][ T0] [ 1.286404][ T0] ? next_object+0x70/0x70 [ 1.287350][ T0] ? set_memory_np_noalias+0xb0/0xb0 [ 1.288146][ T0] ? crng_reseed+0x154/0x260 [ 1.288839][ T0] ? lookup_address_in_pgd+0x2e2/0x330 [ 1.289624][ T0] kfence_init_pool+0x387/0x620 [ 1.290450][ T0] ? kfence_unprotect+0x190/0x190 [ 1.291230][ T0] ? random_init+0x169/0x19d [ 1.291970][ T0] ? random_init_early+0x208/0x208 [ 1.293179][ T0] kfence_init+0x56/0x2db [ 1.294000][ T0] start_kernel+0x26e/0x470 [ 1.294870][ T0] secondary_startup_64_no_verify+0xce/0xdb [ 1.295771][ T0] [ 1.296182][ T0] Kernel panic - not syncing: panic_on_warn set ... [ 1.297156][ T0] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.1.0-rc5-next-20221118-syzkaller #0 [ 1.298502][ T0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 [ 1.300425][ T0] Call Trace: [ 1.301080][ T0] [ 1.301621][ T0] dump_stack_lvl+0xd1/0x138 [ 1.302511][ T0] panic+0x2cc/0x626 [ 1.303139][ T0] ? panic_print_sys_info.part.0+0x110/0x110 [ 1.304121][ T0] ? __warn.cold+0x24b/0x350 [ 1.304834][ T0] ? kfence_protect+0x9e/0x190 [ 1.305897][ T0] __warn.cold+0x25c/0x350 [ 1.306877][ T0] ? kfence_protect+0x9e/0x190 [ 1.307673][ T0] report_bug+0x1c0/0x210 [ 1.308391][ T0] handle_bug+0x3c/0x70 [ 1.309049][ T0] exc_invalid_op+0x18/0x50 [ 1.309887][ T0] asm_exc_invalid_op+0x1a/0x20 [ 1.310600][ T0] RIP: 0010:kfence_protect+0x9e/0x190 [ 1.311518][ T0] Code: 48 85 c0 74 20 48 89 c3 e8 8f 3f b2 ff 44 8b 74 24 20 bf 01 00 00 00 44 89 f6 e8 2d 3c b2 ff 41 83 fe 01 74 55 e8 72 3f b2 ff <0f> 0b 0f 0b c6 05 00 d0 a6 0c 00 45 31 ed c6 05 f5 cf a6 0c 01 e8 [ 1.314830][ T0] RSP: 0000:ffffffff8c407da8 EFLAGS: 00010093 [ 1.315832][ T0] RAX: 0000000000000000 RBX: ffff888012001040 RCX: 0000000000000000 [ 1.317135][ T0] RDX: ffffffff8c4bc980 RSI: ffffffff81ce6aee RDI: 0000000000000005 [ 1.318631][ T0] RBP: ffff88823bc00000 R08: 0000000000000005 R09: 0000000000000001 [ 1.319892][ T0] R10: 0000000000000003 R11: 0000000000000000 R12: 1ffffffff1880fb5 [ 1.321515][ T0] R13: dffffc0000000000 R14: 0000000000000003 R15: ffff88823bc00000 [ 1.322794][ T0] ? kfence_protect+0x9e/0x190 [ 1.323708][ T0] ? kfence_protect+0x9e/0x190 [ 1.324526][ T0] ? next_object+0x70/0x70 [ 1.325166][ T0] ? set_memory_np_noalias+0xb0/0xb0 [ 1.325959][ T0] ? crng_reseed+0x154/0x260 [ 1.326731][ T0] ? lookup_address_in_pgd+0x2e2/0x330 [ 1.328007][ T0] kfence_init_pool+0x387/0x620 [ 1.329106][ T0] ? kfence_unprotect+0x190/0x190 [ 1.329947][ T0] ? random_init+0x169/0x19d [ 1.330654][ T0] ? random_init_early+0x208/0x208 [ 1.331447][ T0] kfence_init+0x56/0x2db [ 1.332062][ T0] start_kernel+0x26e/0x470 [ 1.332974][ T0] secondary_startup_64_no_verify+0xce/0xdb [ 1.334116][ T0] [ 1.334613][ T0] Rebooting in 86400 seconds.. syzkaller build log: go env (err=) GO111MODULE="auto" GOARCH="amd64" GOBIN="" GOCACHE="/syzkaller/.cache/go-build" GOENV="/syzkaller/.config/go/env" GOEXE="" GOEXPERIMENT="" GOFLAGS="" GOHOSTARCH="amd64" GOHOSTOS="linux" GOINSECURE="" GOMODCACHE="/syzkaller/jobs/linux/gopath/pkg/mod" GONOPROXY="" GONOSUMDB="" GOOS="linux" GOPATH="/syzkaller/jobs/linux/gopath" GOPRIVATE="" GOPROXY="https://proxy.golang.org,direct" GOROOT="/usr/local/go" GOSUMDB="sum.golang.org" GOTMPDIR="" GOTOOLDIR="/usr/local/go/pkg/tool/linux_amd64" GOVCS="" GOVERSION="go1.17" GCCGO="gccgo" AR="ar" CC="gcc" CXX="g++" CGO_ENABLED="1" GOMOD="" CGO_CFLAGS="-g -O2" CGO_CPPFLAGS="" CGO_CXXFLAGS="-g -O2" CGO_FFLAGS="-g -O2" CGO_LDFLAGS="-g -O2" PKG_CONFIG="pkg-config" GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0 -fdebug-prefix-map=/tmp/go-build2157977023=/tmp/go-build -gno-record-gcc-switches" git status (err=) HEAD detached at c85e1c5be nothing to commit, working tree clean export BUILDOS=linux export NATIVEBUILDOS=linux export HOSTOS=linux export HOSTARCH=amd64 export TARGETOS=linux export TARGETARCH=amd64 export TARGETVMARCH=amd64 export CC=gcc export ADDCFLAGS=-O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=8192 -m64 -static export NCORES=62 export EXE= export NATIVEBUILDOS=linux GOOS=linux GOARCH=amd64 go install ./syz-fuzzer make fuzzer execprog stress executor make[1]: Entering directory '/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller' export BUILDOS=linux export NATIVEBUILDOS=linux export HOSTOS=linux export HOSTARCH=amd64 export TARGETOS=linux export TARGETARCH=amd64 export TARGETVMARCH=amd64 export CC=gcc export ADDCFLAGS=-O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=8192 -m64 -static export NCORES=62 export EXE= export NATIVEBUILDOS=linux make[1]: warning: -j62 forced in makefile: resetting jobserver mode. GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/sys.GitRevision=c85e1c5be98819e885698b690ac15a8d05ae38a6 -X 'github.com/google/syzkaller/sys.gitRevisionDate=Sun May 26 13:55:37 2019 +0200'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-fuzzer github.com/google/syzkaller/syz-fuzzer GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/sys.GitRevision=c85e1c5be98819e885698b690ac15a8d05ae38a6 -X 'github.com/google/syzkaller/sys.gitRevisionDate=Sun May 26 13:55:37 2019 +0200'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-execprog github.com/google/syzkaller/tools/syz-execprog GOOS=linux GOARCH=amd64 go build "-ldflags=-s -w -X github.com/google/syzkaller/sys.GitRevision=c85e1c5be98819e885698b690ac15a8d05ae38a6 -X 'github.com/google/syzkaller/sys.gitRevisionDate=Sun May 26 13:55:37 2019 +0200'" "-tags=syz_target syz_os_linux syz_arch_amd64 " -o ./bin/linux_amd64/syz-stress github.com/google/syzkaller/tools/syz-stress mkdir -p ./bin/linux_amd64 gcc -o ./bin/linux_amd64/syz-executor executor/executor.cc \ -O2 -pthread -Wall -Werror -Wparentheses -Wunused-const-variable -Wframe-larger-than=8192 -m64 -static -fpermissive -w -DGOOS_linux=1 -DGOARCH_amd64=1 \ -DHOSTGOOS_linux=1 -DGIT_REVISION=\"c85e1c5be98819e885698b690ac15a8d05ae38a6\" make[1]: Leaving directory '/syzkaller/jobs/linux/gopath/src/github.com/google/syzkaller'