In response to Vyacheslav Dubeyko, here is the problem I encounter, I'm not sure how to reproduce it now, but before deleting /var/cache/apt, I was able to reproduce it by issuing apt-get update. Now, it triggers when Ubuntu launches the apt daemon. Afterward, the whole system is frozen, not even SysRq+I would return me to the console. After setting the log in another partition, here is what I have in syslog: Jul 12 01:08:43 bluetoothd[635]: Stopping discovery Jul 12 01:10:43 dbus[622]: [system] Activating service name='org.freedesktop.PackageKit' (using servicehelper) Jul 12 01:10:43 AptDaemon: INFO: Initializing daemon Jul 12 01:10:43 AptDaemon.PackageKit: INFO: Initializing PackageKit compat layer Jul 12 01:10:43 dbus[622]: [system] Successfully activated service 'org.freedesktop.PackageKit' [ 1677.310656] BUG: unable to handle kernel paging request at 0000000000004c83 [ 1677.310683] IP: [<ffffffffa024d0f2>] nilfs_end_page_io+0x12/0xd0 [nilfs2] [ 1677.310708] PGD 0 [ 1677.310715] Oops: 0000 [#1] SMP [ 1677.310726] Modules linked in: pci_stub vboxpci(OF) vboxnetadp(OF) vboxnetflt(OF) vboxdrv(OF) nfsd(F) auth_rpcgss(F) nfs_acl(F) lockd(F) sunrpc(F) dm_crypt(F) bbswitch(OF) zram(C) intel_powerclamp kvm_intel kvm parport_pc(F) ppdev(F) lp(F) uvcvideo parport(F) crc32_pclmul(F) ghash_clmulni_intel(F) aesni_intel(F) snd_hda_codec_realtek snd_hda_intel snd_hda_codec aes_x86_64(F) asus_wmi lrw(F) sparse_keymap gf128mul(F) snd_hwdep(F) glue_helper(F) ablk_helper(F) arc4(F) snd_pcm(F) cryptd(F) joydev(F) videobuf2_vmalloc videobuf2_memops videobuf2_core mxm_wmi iwldvm snd_page_alloc(F) bnep snd_seq_midi(F) videodev snd_seq_midi_event(F) snd_rawmidi(F) mac80211 snd_seq(F) snd_seq_device(F) btusb snd_timer(F) iwlwifi snd(F) soundcore(F) microcode(F) psmouse(F) rfcomm bluetooth serio_raw(F) cfg80211 lpc_ich mei_me wmi mei mac_hid coretemp binfmt_misc(F) nilfs2 btrfs(F) xor(F) zlib_deflate(F) raid6_pq(F) libcrc32c(F) nbd(F) i915 i2c_algo_bit drm_kms_helper drm alx mdio ahci(F) libahci(F) vi deo(F) [last unloaded: ipmi_msghandler] [ 1677.311066] CPU: 7 PID: 414 Comm: segctord Tainted: GF C O 3.10.0-2-generic #10-Ubuntu [ 1677.311096] Hardware name: ASUSTeK COMPUTER INC. N56VZ/N56VZ, BIOS N56VZ.216 12/06/2012 [ 1677.311124] task: ffff88021c484650 ti: ffff88021eaa2000 task.ti: ffff88021eaa2000 [ 1677.311155] RIP: 0010:[<ffffffffa024d0f2>] [<ffffffffa024d0f2>] nilfs_end_page_io+0x12/0xd0 [nilfs2] [ 1677.311199] RSP: 0000:ffff88021eaa3d00 EFLAGS: 00010202 [ 1677.311218] RAX: ffff880167625180 RBX: 0000000000004c83 RCX: 0000000000000034 [ 1677.311248] RDX: 000000000000000d RSI: 0000000000000000 RDI: 0000000000004c83 [ 1677.311277] RBP: ffff88021eaa3d08 R08: 7800000000000000 R09: a8001fa0bc000000 [ 1677.311305] R10: 57ffca5f4be82f00 R11: 0000000000000019 R12: ffff880213f46288 [ 1677.311328] R13: 0000000000000000 R14: ffffea0007321f80 R15: ffff880167625138 [ 1677.311353] FS: 0000000000000000(0000) GS:ffff88022efc0000(0000) knlGS:0000000000000000 [ 1677.311383] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1677.311403] CR2: 0000000000004c83 CR3: 0000000001c0e000 CR4: 00000000001407e0 [ 1677.311428] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1677.311455] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 [ 1677.311478] Stack: [ 1677.311487] ffff880213f461e0 ffff88021eaa3e00 ffffffffa024e4c5 ffffffff81019d09 [ 1677.311520] ffff88021c484650 ffff88021c484650 ffff88021c484650 ffff880221282270 [ 1677.311541] ffff88021e691f58 ffff88021e691e00 ffff880221282260 000000031c484650 [ 1677.311562] Call Trace: [ 1677.311575] [<ffffffffa024e4c5>] nilfs_segctor_do_construct+0xf25/0x1b20 [nilfs2] [ 1677.311596] [<ffffffff81019d09>] ? sched_clock+0x9/0x10 [ 1677.311614] [<ffffffffa024f3ab>] nilfs_segctor_construct+0x17b/0x290 [nilfs2] [ 1677.311636] [<ffffffffa024f5e2>] nilfs_segctor_thread+0x122/0x3b0 [nilfs2] [ 1677.311657] [<ffffffffa024f4c0>] ? nilfs_segctor_construct+0x290/0x290 [nilfs2] [ 1677.311677] [<ffffffff8107cae0>] kthread+0xc0/0xd0 [ 1677.311690] [<ffffffff8107ca20>] ? kthread_create_on_node+0x120/0x120 [ 1677.311709] [<ffffffff816dd16c>] ret_from_fork+0x7c/0xb0 [ 1677.311724] [<ffffffff8107ca20>] ? kthread_create_on_node+0x120/0x120 [ 1677.311740] Code: 2d ee e0 5b 5d c3 48 89 df e8 fb 25 ee e0 eb db 66 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 55 48 85 ff 48 89 e5 53 48 89 fb 74 29 <48> 8b 07 f6 c4 08 0f 84 9c 00 00 00 48 8b 47 30 48 8b 00 a9 00 [ 1677.311821] RIP [<ffffffffa024d0f2>] nilfs_end_page_io+0x12/0xd0 [nilfs2] [ 1677.311841] RSP <ffff88021eaa3d00> [ 1677.311850] CR2: 0000000000004c83 [ 1677.320046] ---[ end trace 0e7c8d51bd66cbe6 ]--- Jul 12 01:11:50 kernel: [ 1741.418989] SysRq : Emergency Sync Jul 12 01:11:53 kernel: [ 1744.788020] SysRq : Terminate All Tasks -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
