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: 6816868K/8388204K available (151552K kernel code, 36289K rwdata, 31500K rodata, 2896K init, 33500K bss, 1571080K 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-20221117-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 bf 40 b2 ff 44 8b 74 24 20 bf 01 00 00 00 44 89 f6 e8 5d 3d b2 ff 41 83 fe 01 74 55 e8 a2 40 b2 ff <0f> 0b 0f 0b c6 05 a0 87 a6 0c 00 45 31 ed c6 05 95 87 a6 0c 01 e8 RSP: 0000:ffffffff8c407da8 EFLAGS: 00010093 RAX: 0000000000000000 RBX: ffff888012001040 RCX: 0000000000000000 RDX: ffffffff8c4bc980 RSI: ffffffff81ce680e 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