[ kvm-Bugs-1925889 ] slab error in kmem_cache_destroy(): cache `kvm_vcpu':

[ kvm-Bugs-1925889 ] slab error in kmem_cache_destroy(): cache `kvm_vcpu':

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Bugs item #1925889, was opened at 2008-03-26 16:07
Message generated for change (Tracker Item Submitted) made by Item Submitter
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https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1925889&group_id=180599

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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: yunfeng (yunfeng)
Assigned to: Nobody/Anonymous (nobody)
Summary: slab error in kmem_cache_destroy(): cache `kvm_vcpu':

Initial Comment:
This error happened when i try to insert kvm-intel.ko after creating and destroying guests several times.
This error will cause  host to hang.
The commits i caught this error:
kvm.git 680615e31ee986b6a5d64783c536ed9fae67c010 and kvm-userspace.git 52be1a18bb7429506acc95c7fdcf4f87ded7a92c. 

Here is the dmesg output:
kjournald starting.  Commit interval 5 seconds
EXT3 FS on loop0, internal journal
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
kjournald starting.  Commit interval 5 seconds
EXT3 FS on loop0, internal journal
EXT3-fs: recovery complete.
EXT3-fs: mounted filesystem with ordered data mode.
sw0: port 2(tap0) entering disabled state
device tap0 left promiscuous mode
sw0: port 2(tap0) entering disabled state
slab error in kmem_cache_destroy(): cache `kvm_vcpu': Can't free all objects

Call Trace:
 [<ffffffff802781f8>] kmem_cache_destroy+0x95/0xdd
 [<ffffffff880105f5>] :kvm:kvm_exit+0x1c/0x89
 [<ffffffff8024dc4e>] sys_delete_module+0x1b1/0x1e0
 [<ffffffff8020935e>] system_call+0x7e/0x83

slab error in kmem_cache_destroy(): cache `kvm_pte_chain': Can't free all objects

Call Trace:
 [<ffffffff802781f8>] kmem_cache_destroy+0x95/0xdd
 [<ffffffff8801752e>] :kvm:kvm_mmu_module_exit+0x15/0x3a
 [<ffffffff88010644>] :kvm:kvm_exit+0x6b/0x89
 [<ffffffff8024dc4e>] sys_delete_module+0x1b1/0x1e0
 [<ffffffff8020935e>] system_call+0x7e/0x83

slab error in kmem_cache_destroy(): cache `kvm_rmap_desc': Can't free all objects

Call Trace:
 [<ffffffff802781f8>] kmem_cache_destroy+0x95/0xdd
 [<ffffffff8801753f>] :kvm:kvm_mmu_module_exit+0x26/0x3a
 [<ffffffff88010644>] :kvm:kvm_exit+0x6b/0x89
 [<ffffffff8024dc4e>] sys_delete_module+0x1b1/0x1e0
 [<ffffffff8020935e>] system_call+0x7e/0x83

slab error in kmem_cache_destroy(): cache `kvm_mmu_page_header': Can't free all objects

Call Trace:
 [<ffffffff802781f8>] kmem_cache_destroy+0x95/0xdd
 [<ffffffff88010644>] :kvm:kvm_exit+0x6b/0x89
 [<ffffffff8024dc4e>] sys_delete_module+0x1b1/0x1e0
 [<ffffffff8020935e>] system_call+0x7e/0x83

kmem_cache_create: duplicate cache kvm_pte_chain

Call Trace:
 [<ffffffff80278aa8>] kmem_cache_create+0x3f5/0x431
 [<ffffffff88017572>] :kvm:kvm_mmu_module_init+0x1f/0x89
 [<ffffffff88012b78>] :kvm:kvm_arch_init+0x56/0xaa
 [<ffffffff8801072a>] :kvm:kvm_init+0x74/0x295
 [<ffffffff8803e36a>] :kvm_intel:vmx_init+0xd0/0x111
 [<ffffffff8024d911>] sys_init_module+0x162c/0x178f
 [<ffffffff8020935e>] system_call+0x7e/0x83

slab error in kmem_cache_destroy(): cache `kvm_rmap_desc': Can't free all objects

Call Trace:
 [<ffffffff802781f8>] kmem_cache_destroy+0x95/0xdd
 [<ffffffff8801753f>] :kvm:kvm_mmu_module_exit+0x26/0x3a
 [<ffffffff880175d3>] :kvm:kvm_mmu_module_init+0x80/0x89
 [<ffffffff88012b78>] :kvm:kvm_arch_init+0x56/0xaa
 [<ffffffff8801072a>] :kvm:kvm_init+0x74/0x295
 [<ffffffff8803e36a>] :kvm_intel:vmx_init+0xd0/0x111
 [<ffffffff8024d911>] sys_init_module+0x162c/0x178f
 [<ffffffff8020935e>] system_call+0x7e/0x83

slab error in kmem_cache_destroy(): cache `kvm_mmu_page_header': Can't free all objects

Call Trace:
 [<ffffffff802781f8>] kmem_cache_destroy+0x95/0xdd
 [<ffffffff880175d3>] :kvm:kvm_mmu_module_init+0x80/0x89
 [<ffffffff88012b78>] :kvm:kvm_arch_init+0x56/0xaa
 [<ffffffff8801072a>] :kvm:kvm_init+0x74/0x295
 [<ffffffff8803e36a>] :kvm_intel:vmx_init+0xd0/0x111
 [<ffffffff8024d911>] sys_init_module+0x162c/0x178f
 [<ffffffff8020935e>] system_call+0x7e/0x83

kmem_cache_create: duplicate cache kvm_pte_chain

Call Trace:
 [<ffffffff80278aa8>] kmem_cache_create+0x3f5/0x431
 [<ffffffff88017572>] :kvm:kvm_mmu_module_init+0x1f/0x89
 [<ffffffff88012b78>] :kvm:kvm_arch_init+0x56/0xaa
 [<ffffffff8801072a>] :kvm:kvm_init+0x74/0x295
 [<ffffffff8803e36a>] :kvm_intel:vmx_init+0xd0/0x111
 [<ffffffff8024d911>] sys_init_module+0x162c/0x178f
 [<ffffffff8020935e>] system_call+0x7e/0x83

slab error in kmem_cache_destroy(): cache `kvm_rmap_desc': Can't free all objects

Call Trace:
 [<ffffffff802781f8>] kmem_cache_destroy+0x95/0xdd
 [<ffffffff8801753f>] :kvm:kvm_mmu_module_exit+0x26/0x3a
 [<ffffffff880175d3>] :kvm:kvm_mmu_module_init+0x80/0x89
 [<ffffffff88012b78>] :kvm:kvm_arch_init+0x56/0xaa
 [<ffffffff8801072a>] :kvm:kvm_init+0x74/0x295
 [<ffffffff8803e36a>] :kvm_intel:vmx_init+0xd0/0x111
 [<ffffffff8024d911>] sys_init_module+0x162c/0x178f
 [<ffffffff8020935e>] system_call+0x7e/0x83

slab error in kmem_cache_destroy(): cache `kvm_mmu_page_header': Can't free all objects

Call Trace:
 [<ffffffff802781f8>] kmem_cache_destroy+0x95/0xdd
 [<ffffffff880175d3>] :kvm:kvm_mmu_module_init+0x80/0x89
 [<ffffffff88012b78>] :kvm:kvm_arch_init+0x56/0xaa
 [<ffffffff8801072a>] :kvm:kvm_init+0x74/0x295
 [<ffffffff8803e36a>] :kvm_intel:vmx_init+0xd0/0x111
 [<ffffffff8024d911>] sys_init_module+0x162c/0x178f
 [<ffffffff8020935e>] system_call+0x7e/0x83



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