early console in setup code
[    0.000000] Linux version 4.16.0-rc1-00044-g056becf (kbuild@lkp-g5) (gcc version 7.3.0 (Debian 7.3.0-1)) #1 SMP PREEMPT Sat Feb 24 00:27:43 CST 2018
[    0.000000] Command line: ip=::::vm-vp-quantal-x86_64-25::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-vp-quantal-x86_64-25/boot-1-quantal-core-x86_64.cgz-056becf54ef1ab39db14a66625353899dba6762f-20180224-64123-rj0i14-0.yaml ARCH=x86_64 kconfig=x86_64-randconfig-s3-02230816 branch=rcu/rcu/dev commit=056becf54ef1ab39db14a66625353899dba6762f BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s3-02230816/gcc-7/056becf54ef1ab39db14a66625353899dba6762f/vmlinuz-4.16.0-rc1-00044-g056becf max_uptime=600 RESULT_ROOT=/result/boot/1/vm-vp-quantal-x86_64/quantal-core-x86_64.cgz/x86_64-randconfig-s3-02230816/gcc-7/056becf54ef1ab39db14a66625353899dba6762f/0 LKP_SERVER=inn debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 net.ifnames=0 printk.devkmsg=on panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 drbd.minor_count=8 systemd.log_level=err ignore_loglevel console=tty0 earlyprintk=ttyS0,115200 console=ttyS0,115200 vga=normal rw drbd.minor_cou
[    0.000000] x86/fpu: x87 FPU will use FXSAVE
[    0.000000] e820: BIOS-provided physical RAM map:
[    0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009fbff] usable
[    0.000000] BIOS-e820: [mem 0x000000000009fc00-0x000000000009ffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000000f0000-0x00000000000fffff] reserved
[    0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000001ffdffff] usable
[    0.000000] BIOS-e820: [mem 0x000000001ffe0000-0x000000001fffffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000feffc000-0x00000000feffffff] reserved
[    0.000000] BIOS-e820: [mem 0x00000000fffc0000-0x00000000ffffffff] reserved
[    0.000000] debug: ignoring loglevel setting.
[    0.000000] NX (Execute Disable) protection: active
[    0.000000] Hypervisor detected: KVM
[    0.000000] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
[    0.000000] e820: remove [mem 0x000a0000-0x000fffff] usable
[    0.000000] e820: last_pfn = 0x1ffe0 max_arch_pfn = 0x400000000
[    0.000000] MTRR default type: write-back
[    0.000000] MTRR fixed ranges enabled:
[    0.000000]   00000-9FFFF write-back
[    0.000000]   A0000-BFFFF uncachable
[    0.000000]   C0000-FFFFF write-protect
[    0.000000] MTRR variable ranges enabled:
[    0.000000]   0 base 0080000000 mask FF80000000 uncachable
[    0.000000]   1 disabled
[    0.000000]   2 disabled
[    0.000000]   3 disabled
[    0.000000]   4 disabled
[    0.000000]   5 disabled
[    0.000000]   6 disabled
[    0.000000]   7 disabled
[    0.000000] x86/PAT: PAT not supported by CPU.
[    0.000000] x86/PAT: Configuration [0-7]: WB  WT  UC- UC  WB  WT  UC- UC  
[    0.000000] Base memory trampoline at [        (ptrval)] 99000 size 24576
[    0.000000] BRK [0x19cbf000, 0x19cbffff] PGTABLE
[    0.000000] BRK [0x19cc0000, 0x19cc0fff] PGTABLE
[    0.000000] BRK [0x19cc1000, 0x19cc1fff] PGTABLE
[    0.000000] BRK [0x19cc2000, 0x19cc2fff] PGTABLE
[    0.000000] RAMDISK: [mem 0x1beba000-0x1ffdffff]
[    0.000000] ACPI: Early table checksum verification disabled
[    0.000000] ACPI: RSDP 0x00000000000F6870 000014 (v00 BOCHS )
[    0.000000] ACPI: RSDT 0x000000001FFE1628 000030 (v01 BOCHS  BXPCRSDT 00000001 BXPC 00000001)
[    0.000000] ACPI: FACP 0x000000001FFE147C 000074 (v01 BOCHS  BXPCFACP 00000001 BXPC 00000001)
[    0.000000] ACPI: DSDT 0x000000001FFE0040 00143C (v01 BOCHS  BXPCDSDT 00000001 BXPC 00000001)
[    0.000000] ACPI: FACS 0x000000001FFE0000 000040
[    0.000000] ACPI: APIC 0x000000001FFE1570 000080 (v01 BOCHS  BXPCAPIC 00000001 BXPC 00000001)
[    0.000000] ACPI: HPET 0x000000001FFE15F0 000038 (v01 BOCHS  BXPCHPET 00000001 BXPC 00000001)
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] mapped APIC to ffffffffff5fd000 (        fee00000)
[    0.000000] kvm-clock: cpu 0, msr 0:1beb8001, primary cpu clock
[    0.000000] kvm-clock: Using msrs 4b564d01 and 4b564d00
[    0.000000] kvm-clock: using sched offset of 321156932 cycles
[    0.000000] clocksource: kvm-clock: mask: 0xffffffffffffffff max_cycles: 0x1cd42e4dffb, max_idle_ns: 881590591483 ns
[    0.000000] Zone ranges:
[    0.000000]   DMA      [mem 0x0000000000001000-0x0000000000ffffff]
[    0.000000]   DMA32    [mem 0x0000000001000000-0x000000001ffdffff]
[    0.000000]   Normal   empty
[    0.000000] Movable zone start for each node
[    0.000000] Early memory node ranges
[    0.000000]   node   0: [mem 0x0000000000001000-0x000000000009efff]
[    0.000000]   node   0: [mem 0x0000000000100000-0x000000001ffdffff]
[    0.000000] Initmem setup node 0 [mem 0x0000000000001000-0x000000001ffdffff]
[    0.000000] On node 0 totalpages: 130942
[    0.000000]   DMA zone: 64 pages used for memmap
[    0.000000]   DMA zone: 21 pages reserved
[    0.000000]   DMA zone: 3998 pages, LIFO batch:0
[    0.000000]   DMA32 zone: 1984 pages used for memmap
[    0.000000]   DMA32 zone: 126944 pages, LIFO batch:31
[    0.000000] Reserved but unavailable: 98 pages
[    0.000000] kasan: KernelAddressSanitizer initialized
[    0.000000] ACPI: PM-Timer IO Port: 0x608
[    0.000000] ACPI: Local APIC address 0xfee00000
[    0.000000] ACPI: LAPIC_NMI (acpi_id[0xff] dfl dfl lint[0x1])
[    0.000000] IOAPIC[0]: apic_id 0, version 17, address 0xfec00000, GSI 0-23
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 0 global_irq 2 dfl dfl)
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 00, APIC ID 0, APIC INT 02
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 5 global_irq 5 high level)
[    0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 05, APIC ID 0, APIC INT 05
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
[    0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 09, APIC ID 0, APIC INT 09
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 10 global_irq 10 high level)
[    0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0a, APIC ID 0, APIC INT 0a
[    0.000000] ACPI: INT_SRC_OVR (bus 0 bus_irq 11 global_irq 11 high level)
[    0.000000] Int: type 0, pol 1, trig 3, bus 00, IRQ 0b, APIC ID 0, APIC INT 0b
[    0.000000] ACPI: IRQ0 used by override.
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 01, APIC ID 0, APIC INT 01
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 03, APIC ID 0, APIC INT 03
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 04, APIC ID 0, APIC INT 04
[    0.000000] ACPI: IRQ5 used by override.
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 06, APIC ID 0, APIC INT 06
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 07, APIC ID 0, APIC INT 07
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 08, APIC ID 0, APIC INT 08
[    0.000000] ACPI: IRQ9 used by override.
[    0.000000] ACPI: IRQ10 used by override.
[    0.000000] ACPI: IRQ11 used by override.
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0c, APIC ID 0, APIC INT 0c
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0d, APIC ID 0, APIC INT 0d
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0e, APIC ID 0, APIC INT 0e
[    0.000000] Int: type 0, pol 0, trig 0, bus 00, IRQ 0f, APIC ID 0, APIC INT 0f
[    0.000000] Using ACPI (MADT) for SMP configuration information
[    0.000000] ACPI: HPET id: 0x8086a201 base: 0xfed00000
[    0.000000] smpboot: Allowing 2 CPUs, 0 hotplug CPUs
[    0.000000] mapped IOAPIC to ffffffffff5fc000 (fec00000)
[    0.000000] e820: [mem 0x20000000-0xfeffbfff] available for PCI devices
[    0.000000] Booting paravirtualized kernel on KVM
[    0.000000] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
[    0.000000] random: fast init done
[    0.000000] setup_percpu: NR_CPUS:64 nr_cpumask_bits:64 nr_cpu_ids:2 nr_node_ids:1
[    0.000000] percpu: Embedded 53 pages/cpu @        (ptrval) s180168 r8192 d28728 u1048576
[    0.000000] pcpu-alloc: s180168 r8192 d28728 u1048576 alloc=1*2097152
[    0.000000] pcpu-alloc: [0] 0 1 
[    0.000000] KVM setup async PF for cpu 0
[    0.000000] kvm-stealtime: cpu 0, msr 12e1e1c0
[    0.000000] Built 1 zonelists, mobility grouping on.  Total pages: 128873
[    0.000000] Kernel command line: ip=::::vm-vp-quantal-x86_64-25::dhcp root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-vp-quantal-x86_64-25/boot-1-quantal-core-x86_64.cgz-056becf54ef1ab39db14a66625353899dba6762f-20180224-64123-rj0i14-0.yaml ARCH=x86_64 kconfig=x86_64-randconfig-s3-02230816 branch=rcu/rcu/dev commit=056becf54ef1ab39db14a66625353899dba6762f BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s3-02230816/gcc-7/056becf54ef1ab39db14a66625353899dba6762f/vmlinuz-4.16.0-rc1-00044-g056becf max_uptime=600 RESULT_ROOT=/result/boot/1/vm-vp-quantal-x86_64/quantal-core-x86_64.cgz/x86_64-randconfig-s3-02230816/gcc-7/056becf54ef1ab39db14a66625353899dba6762f/0 LKP_SERVER=inn debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 net.ifnames=0 printk.devkmsg=on panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 drbd.minor_count=8 systemd.log_level=err ignore_loglevel console=tty0 earlyprintk=ttyS0,115200 console=ttyS0,115200 vga=normal rw drbd.mi
[    0.000000] sysrq: sysrq always enabled.
[    0.000000] Dentry cache hash table entries: 65536 (order: 7, 524288 bytes)
[    0.000000] Inode-cache hash table entries: 32768 (order: 6, 262144 bytes)
[    0.000000] Memory: 310376K/523768K available (16396K kernel code, 6501K rwdata, 7568K rodata, 1672K init, 23032K bss, 213392K reserved, 0K cma-reserved)
[    0.000000] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=2, Nodes=1
[    0.000000] Kernel/User page tables isolation: enabled
[    0.000000] ftrace: allocating 40593 entries in 159 pages
[    0.000000] 
[    0.000000] **********************************************************
[    0.000000] **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
[    0.000000] **                                                      **
[    0.000000] ** trace_printk() being used. Allocating extra memory.  **
[    0.000000] **                                                      **
[    0.000000] ** This means that this is a DEBUG kernel and it is     **
[    0.000000] ** unsafe for production use.                           **
[    0.000000] **                                                      **
[    0.000000] ** If you see this message and you are not debugging    **
[    0.000000] ** the kernel, report this immediately to your vendor!  **
[    0.000000] **                                                      **
[    0.000000] **   NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE NOTICE   **
[    0.000000] **********************************************************
[    0.004000] Running RCU self tests
[    0.004000] Preemptible hierarchical RCU implementation.
[    0.004000] 	RCU event tracing is enabled.
[    0.004000] 	RCU lockdep checking is enabled.
[    0.004000] 	RCU restricting CPUs from NR_CPUS=64 to nr_cpu_ids=2.
[    0.004000] 	RCU debug extended QS entry/exit.
[    0.004000] 	RCU CPU stall warnings timeout set to 100 (rcu_cpu_stall_timeout).
[    0.004000] 	Tasks RCU enabled.
[    0.004000] RCU: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=2
[    0.004000] NR_IRQS: 4352, nr_irqs: 56, preallocated irqs: 16
[    0.004000] 	Offload RCU callbacks from CPUs: (none).
[    0.004000] console [ttyS0] enabled
[    0.004000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[    0.004000] ... MAX_LOCKDEP_SUBCLASSES:  8
[    0.004000] ... MAX_LOCK_DEPTH:          48
[    0.004000] ... MAX_LOCKDEP_KEYS:        8191
[    0.004000] ... CLASSHASH_SIZE:          4096
[    0.004000] ... MAX_LOCKDEP_ENTRIES:     32768
[    0.004000] ... MAX_LOCKDEP_CHAINS:      65536
[    0.004000] ... CHAINHASH_SIZE:          32768
[    0.004000]  memory used by lock dependency info: 7391 kB
[    0.004000]  per task-struct memory footprint: 1920 bytes
[    0.004000] ACPI: Core revision 20180105
[    0.004000] ACPI: 1 ACPI AML tables successfully acquired and loaded
[    0.004000] clocksource: hpet: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 19112604467 ns
[    0.004000] hpet clockevent registered
[    0.004102] APIC: Switch to symmetric I/O mode setup
[    0.005012] enabled ExtINT on CPU#0
[    0.006613] ENABLING IO-APIC IRQs
[    0.008148] init IO_APIC IRQs
[    0.008609]  apic 0 pin 0 not connected
[    0.009427] IOAPIC[0]: Set routing entry (0-1 -> 0xef -> IRQ 1 Mode:0 Active:0 Dest:1)
[    0.010832] IOAPIC[0]: Set routing entry (0-2 -> 0x30 -> IRQ 0 Mode:0 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-3 -> 0xef -> IRQ 3 Mode:0 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-4 -> 0xef -> IRQ 4 Mode:0 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-5 -> 0xef -> IRQ 5 Mode:1 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-6 -> 0xef -> IRQ 6 Mode:0 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-7 -> 0xef -> IRQ 7 Mode:0 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-8 -> 0xef -> IRQ 8 Mode:0 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-9 -> 0xef -> IRQ 9 Mode:1 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-10 -> 0xef -> IRQ 10 Mode:1 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-11 -> 0xef -> IRQ 11 Mode:1 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-12 -> 0xef -> IRQ 12 Mode:0 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-13 -> 0xef -> IRQ 13 Mode:0 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-14 -> 0xef -> IRQ 14 Mode:0 Active:0 Dest:1)
[    0.012000] IOAPIC[0]: Set routing entry (0-15 -> 0xef -> IRQ 15 Mode:0 Active:0 Dest:1)
[    0.012000]  apic 0 pin 16 not connected
[    0.012000]  apic 0 pin 17 not connected
[    0.012000]  apic 0 pin 18 not connected
[    0.012000]  apic 0 pin 19 not connected
[    0.012000]  apic 0 pin 20 not connected
[    0.012000]  apic 0 pin 21 not connected
[    0.012000]  apic 0 pin 22 not connected
[    0.012000]  apic 0 pin 23 not connected
[    0.012000] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=-1 pin2=-1
[    0.012000] tsc: Detected 2693.508 MHz processor
[    0.012000] clocksource: tsc-early: mask: 0xffffffffffffffff max_cycles: 0x26d349e8249, max_idle_ns: 440795288087 ns
[    0.012044] Calibrating delay loop (skipped) preset value.. 5387.01 BogoMIPS (lpj=10774032)
[    0.013840] pid_max: default: 32768 minimum: 301
[    0.017036] Mount-cache hash table entries: 1024 (order: 1, 8192 bytes)
[    0.020026] Mountpoint-cache hash table entries: 1024 (order: 1, 8192 bytes)
[    0.027849] CPU: Physical Processor ID: 0
[    0.028051] Last level iTLB entries: 4KB 0, 2MB 0, 4MB 0
[    0.029362] Last level dTLB entries: 4KB 0, 2MB 0, 4MB 0, 1GB 0
[    0.030785] Spectre V2 : Mitigation: Full generic retpoline
[    0.032777] Freeing SMP alternatives memory: 20K
[    0.036304] ==================================================================
[    0.037875] BUG: KASAN: null-ptr-deref in __lock_acquire+0x171/0x13d0
[    0.040000] Read of size 8 at addr 0000000000000018 by task swapper/0/0
[    0.040000] 
[    0.040000] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.16.0-rc1-00044-g056becf #1
[    0.040000] Call Trace:
[    0.040000]  dump_stack+0x81/0xb3
[    0.040000]  kasan_report+0x22a/0x25a
[    0.040000]  __lock_acquire+0x171/0x13d0
[    0.040000]  ? lookup_chain_cache+0x42/0x6b
[    0.040000]  ? mark_lock+0x25b/0x26d
[    0.040000]  ? rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  ? debug_check_no_locks_freed+0x19f/0x19f
[    0.040000]  ? debug_check_no_locks_freed+0x19f/0x19f
[    0.040000]  ? acpi_hw_read+0x1a0/0x202
[    0.040000]  ? rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  ? lock_acquire+0x1c0/0x209
[    0.040000]  lock_acquire+0x1c0/0x209
[    0.040000]  ? rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  _raw_spin_lock_irqsave+0x43/0x56
[    0.040000]  ? rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  ? sync_sched_exp_handler+0x111/0x111
[    0.040000]  sync_rcu_exp_select_cpus+0x2ff/0x412
[    0.040000]  ? rcu_read_lock_sched_held+0x60/0x66
[    0.040000]  ? sync_sched_exp_handler+0x111/0x111
[    0.040000]  _synchronize_rcu_expedited+0x427/0x5ba
[    0.040000]  ? signal_pending+0x15/0x15
[    0.040000]  ? acpi_hw_write_pm1_control+0x52/0x52
[    0.040000]  ? acpi_hw_write_pm1_control+0x52/0x52
[    0.040000]  ? __change_page_attr_set_clr+0x420/0x420
[    0.040000]  ? printk+0x94/0xb0
[    0.040000]  ? show_regs_print_info+0xa/0xa
[    0.040000]  ? lock_downgrade+0x26a/0x26a
[    0.040000]  ? acpi_read_bit_register+0xb1/0xde
[    0.040000]  ? acpi_read+0xa/0xa
[    0.040000]  ? acpi_read+0xa/0xa
[    0.040000]  ? acpi_hw_get_mode+0x91/0xc2
[    0.040000]  ? _find_next_bit+0x3f/0xe4
[    0.040000]  ? __lock_is_held+0x2a/0x87
[    0.040000]  ? lock_is_held_type+0x78/0x86
[    0.040000]  rcu_test_sync_prims+0xa/0x23
[    0.040000]  rest_init+0xb/0xcf
[    0.040000]  start_kernel+0x59a/0x5be
[    0.040000]  ? mem_encrypt_init+0x6/0x6
[    0.040000]  ? memcpy_orig+0x54/0x110
[    0.040000]  ? x86_family+0x5/0x1d
[    0.040000]  ? load_ucode_bsp+0x3a/0xab
[    0.040000]  secondary_startup_64+0xa5/0xb0
[    0.040000] ==================================================================
[    0.040000] Disabling lock debugging due to kernel taint
[    0.040000] BUG: unable to handle kernel NULL pointer dereference at 0000000000000018
[    0.040000] IP: __lock_acquire+0x171/0x13d0
[    0.040000] PGD 0 P4D 0 
[    0.040000] Oops: 0000 [#1] PREEMPT SMP KASAN PTI
[    0.040000] Modules linked in:
[    0.040000] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G    B            4.16.0-rc1-00044-g056becf #1
[    0.040000] RIP: 0010:__lock_acquire+0x171/0x13d0
[    0.040000] RSP: 0000:ffffffffb6a079a0 EFLAGS: 00010056
[    0.040000] RAX: 0000000000000096 RBX: 0000000000000000 RCX: ffffffffb50c9e31
[    0.040000] RDX: 0000000000000003 RSI: 0000000000000003 RDI: 0000000000000001
[    0.040000] RBP: ffffffffb6a07b50 R08: dffffc0000000000 R09: 0000000000000000
[    0.040000] R10: 0000000000000000 R11: ffffffffb81f673a R12: 0000000000000018
[    0.040000] R13: 0000000000000000 R14: ffffffffb6a1cc40 R15: 0000000000000001
[    0.040000] FS:  0000000000000000(0000) GS:ffff880012e00000(0000) knlGS:0000000000000000
[    0.040000] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.040000] CR2: 0000000000000018 CR3: 0000000017a14000 CR4: 00000000000006b0
[    0.040000] Call Trace:
[    0.040000]  ? lookup_chain_cache+0x42/0x6b
[    0.040000]  ? mark_lock+0x25b/0x26d
[    0.040000]  ? rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  ? debug_check_no_locks_freed+0x19f/0x19f
[    0.040000]  ? debug_check_no_locks_freed+0x19f/0x19f
[    0.040000]  ? acpi_hw_read+0x1a0/0x202
[    0.040000]  ? rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  ? lock_acquire+0x1c0/0x209
[    0.040000]  lock_acquire+0x1c0/0x209
[    0.040000]  ? rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  _raw_spin_lock_irqsave+0x43/0x56
[    0.040000]  ? rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  rcu_report_exp_cpu_mult+0x21/0x6d
[    0.040000]  ? sync_sched_exp_handler+0x111/0x111
[    0.040000]  sync_rcu_exp_select_cpus+0x2ff/0x412
[    0.040000]  ? rcu_read_lock_sched_held+0x60/0x66
[    0.040000]  ? sync_sched_exp_handler+0x111/0x111
[    0.040000]  _synchronize_rcu_expedited+0x427/0x5ba
[    0.040000]  ? signal_pending+0x15/0x15
[    0.040000]  ? acpi_hw_write_pm1_control+0x52/0x52
[    0.040000]  ? acpi_hw_write_pm1_control+0x52/0x52
[    0.040000]  ? __change_page_attr_set_clr+0x420/0x420
[    0.040000]  ? printk+0x94/0xb0
[    0.040000]  ? show_regs_print_info+0xa/0xa
[    0.040000]  ? lock_downgrade+0x26a/0x26a
[    0.040000]  ? acpi_read_bit_register+0xb1/0xde
[    0.040000]  ? acpi_read+0xa/0xa
[    0.040000]  ? acpi_read+0xa/0xa
[    0.040000]  ? acpi_hw_get_mode+0x91/0xc2
[    0.040000]  ? _find_next_bit+0x3f/0xe4
[    0.040000]  ? __lock_is_held+0x2a/0x87
[    0.040000]  ? lock_is_held_type+0x78/0x86
[    0.040000]  rcu_test_sync_prims+0xa/0x23
[    0.040000]  rest_init+0xb/0xcf
[    0.040000]  start_kernel+0x59a/0x5be
[    0.040000]  ? mem_encrypt_init+0x6/0x6
[    0.040000]  ? memcpy_orig+0x54/0x110
[    0.040000]  ? x86_family+0x5/0x1d
[    0.040000]  ? load_ucode_bsp+0x3a/0xab
[    0.040000]  secondary_startup_64+0xa5/0xb0
[    0.040000] Code: b6 48 c7 c7 40 8c 25 b6 e8 c4 d5 f9 ff 0f ff e9 3e 12 00 00 8b 1d fb df 9b 01 85 db 74 19 4c 89 e7 bb 00 00 00 00 e8 6b e2 14 00 <49> 81 3c 24 80 3d 66 b7 41 0f 45 df 41 83 fd 01 77 17 45 89 ef 
[    0.040000] RIP: __lock_acquire+0x171/0x13d0 RSP: ffffffffb6a079a0
[    0.040000] CR2: 0000000000000018
[    0.040000] ---[ end trace 3538acf156ca7a42 ]---
[    0.040000] Kernel panic - not syncing: Fatal exception

Elapsed time: 10

#!/bin/bash

# To reproduce,
# 1) save job-script and this script (both are attached in 0day report email)
# 2) run this script with your compiled kernel and optional env $INSTALL_MOD_PATH

kernel=$1

initrds=(
	/osimage/quantal/quantal-core-x86_64.cgz
	/lkp/lkp/lkp-x86_64.cgz
)

HTTP_PREFIX=https://github.com/0day-ci/lkp-qemu/raw/master
wget --timestamping "${initrds[@]/#/$HTTP_PREFIX}"

{
	cat "${initrds[@]//*\//}"
	[[ $INSTALL_MOD_PATH ]] && (
		cd "$INSTALL_MOD_PATH"
		find lib | cpio -o -H newc --quiet | gzip
	)
	echo  job-script | cpio -o -H newc --quiet | gzip
} > initrd.img

kvm=(
	qemu-system-x86_64
	-enable-kvm
	-kernel $kernel
	-initrd initrd.img
	-m 512
	-smp 2
	-device e1000,netdev=net0
	-netdev user,id=net0
	-boot order=nc
	-no-reboot
	-watchdog i6300esb
	-watchdog-action debug
	-rtc base=localtime
	-serial stdio
	-display none
	-monitor null
)

append=(
	ip=::::vm-vp-quantal-x86_64-25::dhcp
	root=/dev/ram0
	user=lkp
	job=/job-script
	ARCH=x86_64
	kconfig=x86_64-randconfig-s3-02230816
	branch=rcu/rcu/dev
	commit=056becf54ef1ab39db14a66625353899dba6762f
	BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s3-02230816/gcc-7/056becf54ef1ab39db14a66625353899dba6762f/vmlinuz-4.16.0-rc1-00044-g056becf
	max_uptime=600
	RESULT_ROOT=/result/boot/1/vm-vp-quantal-x86_64/quantal-core-x86_64.cgz/x86_64-randconfig-s3-02230816/gcc-7/056becf54ef1ab39db14a66625353899dba6762f/0
	result_service=tmpfs
	debug
	apic=debug
	sysrq_always_enabled
	rcupdate.rcu_cpu_stall_timeout=100
	net.ifnames=0
	printk.devkmsg=on
	panic=-1
	softlockup_panic=1
	nmi_watchdog=panic
	oops=panic
	load_ramdisk=2
	prompt_ramdisk=0
	drbd.minor_count=8
	systemd.log_level=err
	ignore_loglevel
	console=tty0
	earlyprintk=ttyS0,115200
	console=ttyS0,115200
	vga=normal
	rw
	drbd.minor_count=8
	rcuperf.shutdown=0
)

"${kvm[@]}" -append "${append[*]}"
