Kernel Panic and crash crash while executing kvm_zap_rmapp

Solution Verified - Updated -

Issue

  • Kernel panics on command qemu-kvm
  • The following backtrace is noted:
  crash> bt
  PID: 135844  TASK: ffff89a26c148000  CPU: 14  COMMAND: "qemu-kvm"
   #0 [ffff89cfa993f8c8] machine_kexec at ffffffff81051e9b
   #1 [ffff89cfa993f928] crash_kexec at ffffffff810f27a2
   #2 [ffff89cfa993f9f8] oops_end at ffffffff8163f448
   #3 [ffff89cfa993fa20] no_context at ffffffff8162f57b
   #4 [ffff89cfa993fa70] __bad_area_nosemaphore at ffffffff8162f611
   #5 [ffff89cfa993fab8] bad_area_nosemaphore at ffffffff8162f77b
   #6 [ffff89cfa993fac8] __do_page_fault at ffffffff816421be
   #7 [ffff89cfa993fb28] do_page_fault at ffffffff81642353
   #8 [ffff89cfa993fb50] page_fault at ffffffff8163e648
      [exception RIP: kvm_zap_rmapp+0x34]
      RIP: ffffffffa08f5ad4  RSP: ffff89cfa993fc08  RFLAGS: 00010206
      RAX: 0000000000000000  RBX: ffffc9025b72ac88  RCX: 000000000073a591
      RDX: 0000000429620000  RSI: 0000000429620000  RDI: ffff8ae69725c000
      RBP: ffff89cfa993fc18   R8: 0000000000000001   R9: 0000000000000000
      R10: 0000000000000006  R11: 0000000000000293  R12: ffff8ae69725c000
      R13: ffffffffa08f5b00  R14: 0000000000000000  R15: ffffc901a1eb5008
      ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0018
   #9 [ffff89cfa993fc20] kvm_unmap_rmapp at ffffffffa08f5b0e [kvm]
  #10 [ffff89cfa993fc30] kvm_handle_hva_range at ffffffffa08f1fa4 [kvm]
  #11 [ffff89cfa993fcd0] kvm_unmap_hva_range at ffffffffa08fde07 [kvm]
  #12 [ffff89cfa993fce0] kvm_mmu_notifier_invalidate_range_start at ffffffffa08d4b73 [kvm]
  #13 [ffff89cfa993fd20] __mmu_notifier_invalidate_range_start at ffffffff811b9a64
  #14 [ffff89cfa993fd60] change_protection_range at ffffffff8119fca1
  #15 [ffff89cfa993fe68] change_protection at ffffffff8119fd15
  #16 [ffff89cfa993fea0] change_prot_numa at ffffffff811b679b
  #17 [ffff89cfa993feb0] task_numa_work at ffffffff810bd476
  #18 [ffff89cfa993ff00] task_work_run at ffffffff810a2317
  #19 [ffff89cfa993ff30] do_notify_resume at ffffffff81014b12
  #20 [ffff89cfa993ff50] int_signal at ffffffff81646dfd
      RIP: 00007fae2710c75f  RSP: 00007ffcd53f2ae0  RFLAGS: 00000293
      RAX: 0000000000000000  RBX: 00007fae349d9140  RCX: ffffffffffffffff
      RDX: 00007ffcd53f2b00  RSI: 0000000000000006  RDI: 00007fae34996940
      RBP: 00007ffcd53f2b54   R8: 0000000000000008   R9: 0000000000000000
      R10: 0000000000000000  R11: 0000000000000293  R12: 0000000000000000
      R13: 0000000000000001  R14: 000000000000000f  R15: 00007fae328bc767
      ORIG_RAX: 000000000000010f  CS: 0033  SS: 002b

Environment

  • Red Hat Enterprise Linux 7
  • KVM virtualization host
  • kernel-3.10.0-514.16.1.el7.x86_64 or earlier
  • kernel-3.10.0-327.53.1.el7.x86_64 or earlier (RHEL7.2 EUS)

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