Comment 0 for bug 1091385

While trying to upgrade kernel to 3.5.0-21 via update manager

[34578.255131] BUG: unable to handle kernel paging request at ffffffffa0754318
[34578.255184] IP: [<ffffffff810fd2f9>] register_ftrace_event+0xa9/0x2b0
[34578.255223] PGD 1c0d067 PUD 1c11063 PMD 232423067 PTE 80000002326e4161
[34578.255268] Oops: 0003 [#1] SMP
[34578.255294] CPU 0
[34578.255305] Modules linked in: xfs(+) reiserfs ext2 hid_microsoft usbhid hid michael_mic arc4 pci_stub vboxpci(O) vboxnetadp(O) vboxnetflt(O) vboxdrv(O) ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi snd_hda_codec_hdmi snd_hda_codec_realtek kvm_intel joydev acer_wmi sparse_keymap kvm uvcvideo videobuf2_core videodev videobuf2_vmalloc videobuf2_memops microcode mxm_wmi lpc_ich psmouse serio_raw snd_hda_intel snd_hda_codec snd_hwdep snd_pcm snd_seq_midi snd_rawmidi snd_seq_midi_event i915 snd_seq parport_pc ppdev rfcomm lib80211_crypt_tkip snd_timer bnep wl(PO) bluetooth drm_kms_helper tg3 snd_seq_device drm snd wmi i2c_algo_bit mac_hid soundcore mei lib80211 snd_page_alloc video nfsd nfs lockd fscache auth_rpcgss nfs_acl binfmt_misc sunrpc coretemp lp parport
[34578.255898]
[34578.255904] Pid: 24939, comm: modprobe Tainted: P O 3.5.0-20-generic #31-Ubuntu Acer TravelMate 5742/TravelMate 5742
[34578.255961] RIP: 0010:[<ffffffff810fd2f9>] [<ffffffff810fd2f9>] register_ftrace_event+0xa9/0x2b0
[34578.256006] RSP: 0018:ffff880234fc9dc8 EFLAGS: 00010246
[34578.256031] RAX: ffffffffa0754318 RBX: ffffffffa0a94028 RCX: ffffffff81c39b90
[34578.256063] RDX: 0000000000000413 RSI: ffffffffa0a94038 RDI: ffffffff81c39b60
[34578.256094] RBP: ffff880234fc9dd8 R08: ffff88010d62ca88 R09: ffff88010d62c9b8
[34578.256127] R10: 00000000000007ee R11: 0000000000000000 R12: ffffffffa0aa1ae8
[34578.256159] R13: ffffffffa0aa9800 R14: ffffffffa0a94000 R15: ffff88010d62c818
[34578.256191] FS: 00007f9e0fb14700(0000) GS:ffff88025bc00000(0000) knlGS:0000000000000000
[34578.257928] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
[34578.259669] CR2: ffffffffa0754318 CR3: 000000018d494000 CR4: 00000000000007f0
[34578.261428] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[34578.263197] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[34578.264949] Process modprobe (pid: 24939, threadinfo ffff880234fc8000, task ffff88025043dc00)
[34578.266715] Stack:
[34578.268472] ffffffffa0aa2478 ffffffffa0aa1ae8 ffff880234fc9de8 ffffffff811072dd
[34578.270250] ffff880234fc9e58 ffffffff81107e01 ffffffffa0aa9800 0000000000000000
[34578.272040] ffff88010d62c8e8 ffff88010d62c818 ffff88010d62c9b8 ffff88010d62ca88
[34578.273832] Call Trace:
[34578.275624] [<ffffffff811072dd>] trace_event_raw_init+0xd/0x20
[34578.277417] [<ffffffff81107e01>] __trace_add_event_call+0x41/0x4a0
[34578.279227] [<ffffffff811088ae>] trace_module_notify+0x1de/0x2d0
[34578.281032] [<ffffffff816876ad>] notifier_call_chain+0x4d/0x70
[34578.282831] [<ffffffff8107c5b8>] __blocking_notifier_call_chain+0x58/0x80
[34578.284640] [<ffffffff8107c5f6>] blocking_notifier_call_chain+0x16/0x20
[34578.286421] [<ffffffff810b5b15>] sys_init_module+0x75/0x230
[34578.288215] [<ffffffff8168b969>] system_call_fastpath+0x16/0x1b
[34578.289966] Code: 12 e9 dc 00 00 00 0f 1f 40 00 39 50 20 0f 84 cf 00 00 00 48 8b 00 48 85 c0 75 ef 48 8b 41 08 48 89 71 08 48 89 4b 10 48 89 43 18 <48> 89 30 48 8b 4b 28 48 83 39 00 0f 84 76 01 00 00 48 83 79 08
[34578.294056] RIP [<ffffffff810fd2f9>] register_ftrace_event+0xa9/0x2b0
[34578.296004] RSP <ffff880234fc9dc8>
[34578.297924] CR2: ffffffffa0754318
[34578.312177] ---[ end trace 4628a3c39de14e0e ]---

Oops is recoverable, and i can login again and retry
Dpkg log tail after several retries
2012-12-17 20:30:47 startup packages configure
2012-12-17 20:30:47 configure linux-image-3.5.0-21-generic:amd64 3.5.0-21.32 <none>
2012-12-17 20:30:47 status half-configured linux-image-3.5.0-21-generic:amd64 3.5.0-21.32

uname -a
Linux eduard-Laptop-Office 3.5.0-20-generic #31-Ubuntu SMP Wed Dec 5 13:27:11 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
lsb_release -rd
Description: Ubuntu 12.10
Release: 12.10

Second attempt:
 sudo dpkg --configure -a
[sudo] password for eduard:
Se pregătește linux-image-3.5.0-21-generic (3.5.0-21.32) ...
Running depmod.
update-initramfs: deferring update (hook will be called later)
Examining /etc/kernel/postinst.d.
run-parts: executing /etc/kernel/postinst.d/dkms 3.5.0-21-generic /boot/vmlinuz-3.5.0-21-generic
run-parts: executing /etc/kernel/postinst.d/initramfs-tools 3.5.0-21-generic /boot/vmlinuz-3.5.0-21-generic
update-initramfs: Generating /boot/initrd.img-3.5.0-21-generic

... hangs indefinitely

 ubuntu-bug linux doesn't run, complains that linux-image-3.5.0-20-generic is not an official Ubuntu package

version.log
Ubuntu 3.5.0-20.31-generic 3.5.7.1

apt-cache policy linux-image-3.5.0-21-generic (in Romanian)
linux-image-3.5.0-21-generic:
  Instalat: 3.5.0-21.32
  Candidează: 3.5.0-21.32
  Tabela de versiuni:
 *** 3.5.0-21.32 0
        500 http://archive.ubuntu.com/ubuntu/ quantal-proposed/main amd64 Packages
        100 /var/lib/dpkg/status