Oracle VM: Virtual Machine Crashes with "not syncing: IO-APIC + timer doesn't work! Boot with apic=debug and send a report. Then try booting with the 'noapic' option." (Doc ID 2778372.1)

Last updated on JUNE 09, 2021

Applies to:

Symptoms

An OL7 VM on Oracle VM 3.4.x could get crashed with below call stacks, 

crash7latest: cannot read vmcoreinfo_data
     KERNEL: /usr/lib/debug/lib/modules/4.14.35-1818.3.3.el7uek.x86_64/vmlinux
   DUMPFILE: vmcore
       CPUS: 1
       DATE: Tue Apr 27 13:44:08 2021
     UPTIME: 00:00:00
LOAD AVERAGE: 0.00, 0.00, 0.00
      TASKS: 3
   NODENAME: (none)
    RELEASE: 4.14.35-1818.3.3.el7uek.x86_64
    VERSION: #2 SMP Mon Sep 24 14:45:01 PDT 2018
    MACHINE: x86_64  (1995 Mhz)
     MEMORY: 258 MB
      PANIC: "Kernel panic - not syncing: IO-APIC + timer doesn't work!  Boot with apic=debug and send a report.  Then try booting with the 'noapic' option."
        PID: 1
    COMMAND: "swapper/0"
       TASK: ffff88002fad0000  [THREAD_INFO: ffff88002fad0000]
        CPU: 0
      STATE: TASK_RUNNING (PANIC)

crash7latest> bt
PID: 1      TASK: ffff88002fad0000  CPU: 0   COMMAND: "swapper/0"
#0 [ffffc90000127c88] xen_panic_event at ffffffff8101b11c
#1 [ffffc90000127c98] notifier_call_chain at ffffffff810b75bc
#2 [ffffc90000127cd0] atomic_notifier_call_chain at ffffffff810b761a
#3 [ffffc90000127ce0] panic at ffffffff81093aea
#4 [ffffc90000127d60] check_timer at ffffffff8269f23e
#5 [ffffc90000127df0] setup_IO_APIC at ffffffff8269fc7c
#6 [ffffc90000127e18] apic_bsp_setup at ffffffff8269e155
#7 [ffffc90000127e30] native_smp_prepare_cpus at ffffffff8269b9f0
#8 [ffffc90000127e68] xen_hvm_smp_prepare_cpus at ffffffff8268f702
#9 [ffffc90000127e80] kernel_init_freeable at ffffffff826843cb
#10 [ffffc90000127f40] kernel_init at ffffffff81842a5e
#11 [ffffc90000127f50] ret_from_fork at ffffffff81a0032f
crash7latest>
[    0.001000] x2apic: IRQ remapping doesn't support X2APIC mode
[    0.064000] ..TIMER: vector=0x30 apic1=0 pin1=2 apic2=0 pin2=0
[    0.064000] ..MP-BIOS bug: 8254   timer not connected to IO-APIC
[    0.064000] ...trying to set up timer (IRQ0) through the 8259A ...
[    0.064000] ..... (found apic 0 pin 0) ...
[    0.064000] ....... failed.
[    0.064000] ...trying to set up timer as Virtual Wire IRQ...
[    0.064000] ..... failed.
[    0.064000] ...trying to set up timer as ExtINT IRQ...
[    0.064000] ..... failed :(.
[    0.064000] Kernel panic - not syncing: IO-APIC + timer doesn't work!  Boot with apic=debug and send a report.  Then try booting with the 'noapic' option.

[    0.064000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.14.35-1818.3.3.el7uek.x86_64 #2
[    0.064000] Hardware name: Xen HVM domU, BIOS 4.4.4OVM 08/25/2020
[    0.064000] Call Trace:
[    0.064000]  dump_stack+0x63/0x7f
[    0.064000]  panic+0xe8/0x24d
[    0.064000]  check_timer+0x3f0/0x631
[    0.064000]  ? radix_tree_lookup+0xd/0xf
[    0.064000]  setup_IO_APIC+0x1b6/0x1c7
[    0.064000]  apic_bsp_setup+0xab/0xb9
[    0.064000]  native_smp_prepare_cpus+0x264/0x2e5
[    0.064000]  xen_hvm_smp_prepare_cpus+0xf/0x5e
[    0.064000]  kernel_init_freeable+0xd2/0x24d
[    0.064000]  ? rest_init+0xb0/0xac
[    0.064000]  kernel_init+0xe/0x109
[    0.064000]  ret_from_fork+0x1f/0x40
crash7latest>

Changes

No change has been made to the VM. 

Cause

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