Public bug reported:
alanr@ibmlaptop:/var/log$ lsb_release -rd
Description: Ubuntu 12.04.2 LTS
Release: 12.04
Running this kernel after a recent update.
Linux ibmlaptop 3.2.0-41-generic #66-Ubuntu SMP Thu Apr 25 03:27:11 UTC 2013
x86_64 x86_64 x86_64 GNU/Linux
After upgrading, kvm can't start my VM that uses bridging. Tracked it
down as noted below:
WHAT I DID:
I did a sudo depmod /lib/modules/3.2.0-41-generic/kernel/net/bridge/bridge.ko
(this appears to succeed - no messages and 0 exit code)
and a $ sudo insmod /lib/modules/3.2.0-41-generic/kernel/net/bridge/bridge.ko
WHAT I EXPECTED:
I expected the bridge module to load.
WHAT I GOT:
insmod: error inserting
'/lib/modules/3.2.0-41-generic/kernel/net/bridge/bridge.ko': -1 Unknown symbol
in module
Looking at the syslog, I got the unknown symbol messages below:
May 9 17:38:30 ibmlaptop kernel: [ 6162.081081] bridge: Unknown symbol
stp_proto_register (err 0)
May 9 17:38:30 ibmlaptop kernel: [ 6162.081143] bridge: Unknown symbol
stp_proto_unregister (err 0)
what started me down this path:
WHAT I DID:
Started a virtual machine with bridging enabled using Virtual Machine Manager
WHAT I GOT:
Error starting domain: Cannot get interface MTU on 'br0': No such device
Details:
Error starting domain: Cannot get interface MTU on 'br0': No such device
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 45, in cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 66, in tmpcb
callback(*args, **kwargs)
File "/usr/share/virt-manager/virtManager/domain.py", line 1120, in startup
self._backend.create()
File "/usr/lib/python2.7/dist-packages/libvirt.py", line 551, in create
if ret == -1: raise libvirtError ('virDomainCreate() failed', dom=self)
libvirtError: Cannot get interface MTU on 'br0': No such device
WHAT I EXPECTED:
For the VM to start like it did before the upgrade.
All the things above came from further investigation of this problem.
Uncertain if this is related, but , there appear to be a lot of broken symbols
in this kernel:
May 9 15:58:39 ibmlaptop kernel: [ 170.968648] kvm_intel: Unknown symbol
kvm_clear_guest_page (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968654] kvm_intel: Unknown symbol
kvm_disable_largepages (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968662] kvm_intel: Unknown symbol
kvm_exit (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968666] kvm_intel: Unknown symbol
kvm_init (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968670] kvm_intel: Unknown symbol
kvm_enable_efer_bits (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968675] kvm_intel: Unknown symbol
kvm_fast_pio_out (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968679] kvm_intel: Unknown symbol
kvm_mmu_get_spte_hierarchy (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968685] kvm_intel: Unknown symbol
gfn_to_page (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968695] kvm_intel: Unknown symbol
kvm_get_msr_common (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968702] kvm_intel: Unknown symbol
__kvm_set_memory_region (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968709] kvm_intel: Unknown symbol
kvm_vcpu_uninit (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968713] kvm_intel: Unknown symbol
kvm_emulate_halt (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968717] kvm_intel: Unknown symbol
kvm_set_apic_base (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968723] kvm_intel: Unknown symbol
kvm_define_shared_msr (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968729] kvm_intel: Unknown symbol
kvm_set_xcr (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968737] kvm_intel: Unknown symbol
kvm_write_guest_virt_system (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968742] kvm_intel: Unknown symbol
kvm_find_cpuid_entry (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968746] kvm_intel: Unknown symbol
kvm_task_switch (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968750] kvm_intel: Unknown symbol
kvm_read_guest_virt (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968754] kvm_intel: Unknown symbol
kvm_enable_tdp (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968760] kvm_intel: Unknown symbol
x86_emulate_instruction (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968765] kvm_intel: Unknown symbol
__tracepoint_kvm_cr (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968770] kvm_intel: Unknown symbol
kvm_mmu_set_mmio_spte_mask (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968774] kvm_intel: Unknown symbol
kvm_disable_tdp (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968779] kvm_intel: Unknown symbol
kvm_require_cpl (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968785] kvm_intel: Unknown symbol
kvm_lmsw (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968790] kvm_intel: Unknown symbol
kvm_lapic_set_eoi (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968797] kvm_intel: Unknown symbol
kvm_set_memory_region (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968803] kvm_intel: Unknown symbol
kvm_queue_exception (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968808] kvm_intel: Unknown symbol
kvm_after_handle_nmi (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968814] kvm_intel: Unknown symbol
kvm_write_guest_page (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968821] kvm_intel: Unknown symbol
fx_init (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968827] kvm_intel: Unknown symbol
__tracepoint_kvm_page_fault (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968832] kvm_intel: Unknown symbol
__tracepoint_kvm_inj_virq (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968836] kvm_intel: Unknown symbol
kvm_cpu_has_interrupt (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968840] kvm_intel: Unknown symbol
kvm_before_handle_nmi (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968846] kvm_intel: Unknown symbol
kvm_emulate_wbinvd (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968850] kvm_intel: Unknown symbol
kvm_set_cr3 (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968858] kvm_intel: Unknown symbol
kvm_get_cr8 (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968862] kvm_intel: Unknown symbol
kvm_x86_ops (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968868] kvm_intel: Unknown symbol
kvm_vcpu_cache (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968872] kvm_intel: Unknown symbol
kvm_set_dr (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968877] kvm_intel: Unknown symbol
kvm_emulate_hypercall (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968882] kvm_intel: Unknown symbol
__tracepoint_kvm_msr (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968887] kvm_intel: Unknown symbol
kvm_spurious_fault (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968895] kvm_intel: Unknown symbol
kvm_write_tsc (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968899] kvm_intel: Unknown symbol
kvm_mmu_unprotect_page_virt (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968905] kvm_intel: Unknown symbol
kvm_get_guest_memory_type (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968910] kvm_intel: Unknown symbol
kvm_set_cr4 (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968914] kvm_intel: Unknown symbol
kvm_release_page_clean (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968918] kvm_intel: Unknown symbol
kvm_set_cr0 (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968923] kvm_intel: Unknown symbol
kvm_set_cr8 (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968927] kvm_intel: Unknown symbol
kvm_get_dr (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968932] kvm_intel: Unknown symbol
kvm_mmu_page_fault (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968939] kvm_intel: Unknown symbol
kvm_mmu_reset_context (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968944] kvm_intel: Unknown symbol
kvm_vcpu_on_spin (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968949] kvm_intel: Unknown symbol
kvm_read_guest (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968954] kvm_intel: Unknown symbol
kvm_rebooting (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968958] kvm_intel: Unknown symbol
kvm_get_rflags (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968963] kvm_intel: Unknown symbol
kvm_queue_exception_e (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968968] kvm_intel: Unknown symbol
is_error_page (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968973] kvm_intel: Unknown symbol
__tracepoint_kvm_exit (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968977] kvm_intel: Unknown symbol
kvm_emulate_cpuid (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968984] kvm_intel: Unknown symbol
kvm_vcpu_init (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968990] kvm_intel: Unknown symbol
handle_mmio_page_fault_common (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968994] kvm_intel: Unknown symbol
kvm_inject_realmode_interrupt (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.968998] kvm_intel: Unknown symbol
kvm_mmu_invlpg (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.969003] kvm_intel: Unknown symbol
kvm_set_msr_common (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.969007] kvm_intel: Unknown symbol
kvm_set_shared_msr (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.969012] kvm_intel: Unknown symbol
kvm_inject_page_fault (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.969016] kvm_intel: Unknown symbol
kvm_release_page_dirty (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.969021] kvm_intel: Unknown symbol
kvm_complete_insn_gp (err 0)
May 9 15:58:39 ibmlaptop kernel: [ 170.969026] kvm_intel: Unknown symbol
kvm_mmu_set_mask_ptes (err 0)
And many more...
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: kernel-bug
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https://bugs.launchpad.net/bugs/1178737
Title:
Cannot load bridge module: missing symbols
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