Public bug reported:
Binary package hint: kvm
Info:
Stock Ubuntu 8.04 amd64 server.
Symptom:
network goes periodically down or becomes slow.
It seems to happen regularly with 60 minutes period.
The kernel host reports:
[848228.108418] Call Trace:
[848228.108425] [<ffffffff882bee69>] :kvm:gfn_to_memslot+0x9/0x20
[848228.108433] [<ffffffff882c72df>] :kvm:kvm_mmu_get_page+0x41f/0x490
[848228.108443] [<ffffffff882c87fe>] :kvm:kvm_mmu_load+0x10e/0x220
[848228.108452] [<ffffffff882c48cf>] :kvm:kvm_arch_vcpu_ioctl_run+0x2df/0x620
[848228.108461] [<ffffffff882bfddd>] :kvm:kvm_vcpu_ioctl+0x33d/0x350
[848228.108465] [<ffffffff803ef2b9>] netif_rx_ni+0x19/0x20
[848228.108469] [<ffffffff8832ffd2>] :tun:tun_chr_aio_write+0x142/0x250
[848228.108472] [<ffffffff8025eef0>] futex_wake+0x50/0xf0
[848228.108477] [<ffffffff8025fde4>] do_futex+0x134/0xbc0
[848228.108480] [<ffffffff802499fd>] __dequeue_signal+0x2d/0x1e0
[848228.108489] [<ffffffff882bf715>] :kvm:kvm_vm_ioctl+0x85/0x200
[848228.108491] [<ffffffff802496ee>] recalc_sigpending+0xe/0x40
[848228.108494] [<ffffffff8024af49>] dequeue_signal+0x59/0x150
[848228.108498] [<ffffffff8024bf7f>] sys_rt_sigtimedwait+0x11f/0x2c0
[848228.108501] [<ffffffff802c2a9f>] do_ioctl+0x2f/0xa0
[848228.108504] [<ffffffff802c2d30>] vfs_ioctl+0x220/0x2c0
[848228.108506] [<ffffffff802b558e>] vfs_write+0x14e/0x190
[848228.108510] [<ffffffff802c2e61>] sys_ioctl+0x91/0xb0
[848228.108513] [<ffffffff8020c37e>] system_call+0x7e/0x83
** Affects: kvm (Ubuntu)
Importance: Undecided
Status: New
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kvm network instability
https://bugs.launchpad.net/bugs/228163
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