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Virtual Machine with linux guest operating system fails with backtrace: Balloon_QueryAndExecute (2107363)

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  • Virtual machine with Linux guest operating system fails
  • The virtual machine is using the VMware provided memory controller (vmmemctl)
  • You see backtrace similar to:
[<ffffffff88463bf7>] :vmmemctl:Balloon_QueryAndExecute+0x67/0x9cc
[<ffffffff88463716>] :vmmemctl:OS_UnmapPage+0x102/0x2a0
[<ffffffff800a3f62>] autoremove_wake_function+0x0/0x2e
[<ffffffff800a3f62>] autoremove_wake_function+0x0/0x2e
[<ffffffff8846361c>] :vmmemctl:OS_UnmapPage+0x8/0x2a0
[<ffffffff80032c68>] kthread+0xfe/0x132
[<ffffffff8005dfc1>] child_rip+0xa/0x11
[<ffffffff800a3d4a>] keventd_create_kthread+0x0/0xc4
[<ffffffff80032b6a>] kthread+0x0/0x132
[<ffffffff8005dfb7>] child_rip+0x0/0x11


The balloon code considers that a chunk will always contain at least a page such as (chunk= pageCount>0). When this is not true, BalloonDeflate function may access chunk = page[-1] that leads to a page fault .This causes panic and the guest operating system fails.


This is a known issue affecting VMware Tools provided with vSphere 5.5.

This issue is resolved in ESXi 5.5 Patch 5, available at VMware Downloads. For more information, see  VMware ESXi 5.5, Patch Release ESXi550-201505002 (2114245).

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  • 7 Ratings

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  • 7 Ratings