Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 0 Comm: swapper Tainted: G B 4.4.108-g55b3b8c #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 798ca9078a93f787 ffffffff84207c40 ffffffff81d02e5d ffffffff83fb34b5 ffffffff84207d18 0000000000000001 ffffea0000047ce0 ffffea0000047ce0 ffffffff84207d08 ffffffff81417caa 0000000041b58ab3 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] panic+0x1aa/0x388 kernel/panic.c:112 [] kasan_end_report+0x50/0x50 mm/kasan/report.c:176 [] kasan_report_error mm/kasan/report.c:356 [inline] [] kasan_report+0x15c/0x370 mm/kasan/report.c:408 [] __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:434 [] INIT_LIST_HEAD include/linux/list.h:27 [inline] [] reserve_bootmem_region+0xdf/0x130 mm/page_alloc.c:1014 [] free_low_memory_core_early mm/nobootmem.c:134 [inline] [] free_all_bootmem+0xf2/0x24d mm/nobootmem.c:198 [] mem_init+0x13/0x74 arch/x86/mm/init_64.c:1055 [] mm_init init/main.c:486 [inline] [] start_kernel+0x31d/0x6e9 init/main.c:556 [] x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:196 [] x86_64_start_kernel+0x140/0x163 arch/x86/kernel/head64.c:185 Rebooting in 86400 seconds.. ACPI MEMORY or I/O RESET_REG. Initializing cgroup subsys cpuset Initializing cgroup subsys cpu Initializing cgroup subsys cpuacct Initializing cgroup subsys schedtune Linux version 4.4.108-g55b3b8c (syzkaller@ci) (gcc version 7.1.1 20170620 (GCC) ) #6 SMP PREEMPT Wed Dec 27 21:13:08 UTC 2017 Command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native rodata=n ftrace_dump_on_oops=orig_cpu oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 workqueue.watchdog_thresh=120 KERNEL supported cpus: Intel GenuineIntel AMD AuthenticAMD Centaur CentaurHauls x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256 x86/fpu: Supporting XSAVE feature 0x01: 'x87 floating point registers' x86/fpu: Supporting XSAVE feature 0x02: 'SSE registers' x86/fpu: Supporting XSAVE feature 0x04: 'AVX registers' x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'standard' format. x86/fpu: Using 'eager' FPU context switches. e820: BIOS-provided physical RAM map: BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved BIOS-e820: [mem 0x0000000000100000-0x00000000bfffcfff] usable BIOS-e820: [mem 0x00000000bfffd000-0x00000000bfffffff] reserved BIOS-e820: [mem 0x00000000fffbc000-0x00000000ffffffff] reserved BIOS-e820: [mem 0x0000000100000000-0x000000021fffffff] usable bootconsole [earlyser0] enabled NX (Execute Disable) protection: active SMBIOS 2.4 present. Hypervisor detected: KVM e820: last_pfn = 0x220000 max_arch_pfn = 0x400000000 x86/PAT: Configuration [0-7]: WB WC UC- UC WB WC UC- WT e820: last_pfn = 0xbfffd max_arch_pfn = 0x400000000 found SMP MP-table at [mem 0x000f32c0-0x000f32cf] mapped at [ffff8800000f32c0] Scanning 1 areas for low memory corruption Using GB pages for direct mapping ACPI: Early table checksum verification disabled ACPI: RSDP 0x00000000000F3090 000014 (v00 Google) ACPI: RSDT 0x00000000BFFFDC70 000034 (v01 Google GOOGRSDT 00000001 GOOG 00000001) ACPI: FACP 0x00000000BFFFFF00 0000F4 (v02 Google GOOGFACP 00000001 GOOG 00000001) ACPI: DSDT 0x00000000BFFFDCB0 0017B2 (v01 Google GOOGDSDT 00000001 GOOG 00000001) ACPI: FACS 0x00000000BFFFFEC0 000040 ACPI: FACS 0x00000000BFFFFEC0 000040 ACPI: SSDT 0x00000000BFFFF590 000930 (v01 Google GOOGSSDT 00000001 GOOG 00000001) ACPI: APIC 0x00000000BFFFF4A0 000076 (v01 Google GOOGAPIC 00000001 GOOG 00000001) ACPI: WAET 0x00000000BFFFF470 000028 (v01 Google GOOGWAET 00000001 GOOG 00000001) kvm-clock: Using msrs 4b564d01 and 4b564d00 kvm-clock: cpu 0, msr 2:1fffd001, primary cpu clock kvm-clock: using sched offset of 1466337279 cycles clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns Zone ranges: DMA [mem 0x0000000000001000-0x0000000000ffffff] DMA32 [mem 0x0000000001000000-0x00000000ffffffff] Normal [mem 0x0000000100000000-0x000000021fffffff] Movable zone start for each node Early memory node ranges node 0: [mem 0x0000000000001000-0x000000000009efff] node 0: [mem 0x0000000000100000-0x00000000bfffcfff] node 0: [mem 0x0000000100000000-0x000000021fffffff] Initmem setup node 0 [mem 0x0000000000001000-0x000000021fffffff] kasan: KernelAddressSanitizer initialized 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) Using ACPI (MADT) for SMP configuration information smpboot: Allowing 2 CPUs, 0 hotplug CPUs PM: Registered nosave memory: [mem 0x00000000-0x00000fff] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff] PM: Registered nosave memory: [mem 0x000a0000-0x000effff] PM: Registered nosave memory: [mem 0x000f0000-0x000fffff] PM: Registered nosave memory: [mem 0xbfffd000-0xbfffffff] PM: Registered nosave memory: [mem 0xc0000000-0xfffbbfff] PM: Registered nosave memory: [mem 0xfffbc000-0xffffffff] e820: [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:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:1 PERCPU: Embedded 42 pages/cpu @ffff8801db200000 s132680 r8192 d31160 u1048576 Built 1 zonelists in Zone order, mobility grouping on. Total pages: 1935238 Kernel command line: BOOT_IMAGE=/vmlinuz root=/dev/sda1 console=ttyS0 earlyprintk=serial vsyscall=native rodata=n ftrace_dump_on_oops=orig_cpu oops=panic panic_on_warn=1 nmi_watchdog=panic panic=86400 workqueue.watchdog_thresh=120 PID hash table entries: 4096 (order: 3, 32768 bytes) Dentry cache hash table entries: 1048576 (order: 11, 8388608 bytes) Inode-cache hash table entries: 524288 (order: 10, 4194304 bytes) ================================================================== BUG: KASAN: stack-out-of-bounds in INIT_LIST_HEAD include/linux/list.h:27 [inline] BUG: KASAN: stack-out-of-bounds in reserve_bootmem_region+0xdf/0x130 mm/page_alloc.c:1014 Write of size 8 at addr ffffea0000047ce0 by task swapper/0 CPU: 0 PID: 0 Comm: swapper Not tainted 4.4.108-g55b3b8c #6 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 0000000000000000 8d5cba439e6408c3 ffffffff84207ce8 ffffffff81d02e5d ffffea0000047ce0 ffffea0000047ce0 0000000000000001 ffffea0000047ce0 ffffea0000047ce0 ffffffff84207d20 ffffffff814fb329 ffffea0000047ce0 Call Trace: [] __dump_stack lib/dump_stack.c:15 [inline] [] dump_stack+0xc1/0x124 lib/dump_stack.c:51 [] print_address_description+0x189/0x260 mm/kasan/report.c:252 [] kasan_report_error mm/kasan/report.c:351 [inline] [] kasan_report+0x285/0x370 mm/kasan/report.c:408 [] __asan_report_store8_noabort+0x17/0x20 mm/kasan/report.c:434 [] INIT_LIST_HEAD include/linux/list.h:27 [inline] [] reserve_bootmem_region+0xdf/0x130 mm/page_alloc.c:1014 [] free_low_memory_core_early mm/nobootmem.c:134 [inline] [] free_all_bootmem+0xf2/0x24d mm/nobootmem.c:198 [] mem_init+0x13/0x74 arch/x86/mm/init_64.c:1055 [] mm_init init/main.c:486 [inline] [] start_kernel+0x31d/0x6e9 init/main.c:556 [] x86_64_start_reservations+0x2a/0x2c arch/x86/kernel/head64.c:196 [] x86_64_start_kernel+0x140/0x163 arch/x86/kernel/head64.c:185 Memory state around the buggy address: ffffea0000047b80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffea0000047c00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffea0000047c80: 00 00 00 00 00 00 f1 f1 f1 f1 00 00 f2 f2 00 00 ^ ffffea0000047d00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffea0000047d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ==================================================================