[Bug 1562653] [NEW] Ubuntu 15.10: QEMU VM hang if memory >= 1T

2016-03-27 Thread changlimin
Public bug reported:

1. Ubuntu 15.10 x86_64 installed on HP SuperDome X with 8CPUs and 4T
memory.

2. Create a VM, install Ubuntu 15.10, if memory >= 1T , VM hang when start. If 
memory < 1T, it is good.

  u1510-1
  39eefe1e-4829-4843-b892-026d143f3ec7
  1073741824
  1073741824
  16
  
hvm


  
  



  
  
  destroy
  restart
  restart
  
/usr/bin/kvm

  
  
  
  


  
  
  
  



  


  


  
  
  
  
  




  


  
  


  

  


3. The panic stack is
  ... cannot show
  async_page_fault+0x28
  ioread32_rep+0x38
  ata_sff_data_xfer32+0x8a
  ata_pio_sector+0x93
  ata_pio_sectors+0x34
  ata_sff_hsm_move+0x226
  RIP: kthread_data+0x10
  CR2: _FFD8

4. Change the host os to Redhat 7.2 , the vm is good even memory >=3.8T.

** Affects: kvm (Ubuntu)
 Importance: Undecided
 Status: New

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https://bugs.launchpad.net/bugs/1562653

Title:
  Ubuntu 15.10: QEMU VM hang if memory >= 1T

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[Bug 1562653] [NEW] Ubuntu 15.10: QEMU VM hang if memory >= 1T

2016-03-27 Thread changlimin
Public bug reported:

1. Ubuntu 15.10 x86_64 installed on HP SuperDome X with 8CPUs and 4T
memory.

2. Create a VM, install Ubuntu 15.10, if memory >= 1T , VM hang when start. If 
memory < 1T, it is good.

  u1510-1
  39eefe1e-4829-4843-b892-026d143f3ec7
  1073741824
  1073741824
  16
  
hvm


  
  



  
  
  destroy
  restart
  restart
  
/usr/bin/kvm

  
  
  
  


  
  
  
  



  


  


  
  
  
  
  




  


  
  


  

  


3. The panic stack is
  ... cannot show
  async_page_fault+0x28
  ioread32_rep+0x38
  ata_sff_data_xfer32+0x8a
  ata_pio_sector+0x93
  ata_pio_sectors+0x34
  ata_sff_hsm_move+0x226
  RIP: kthread_data+0x10
  CR2: _FFD8

4. Change the host os to Redhat 7.2 , the vm is good even memory >=3.8T.

** Affects: kvm (Ubuntu)
 Importance: Undecided
 Status: New

-- 
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1562653

Title:
  Ubuntu 15.10: QEMU VM hang if memory >= 1T

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/kvm/+bug/1562653/+subscriptions

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https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs