Public bug reported:
I made an encrypted filesystem (on a file) using truecrypt.
I didn't know if this was going to work or not, so I tried it out...
losetup -e aes myfile /dev/loop/0
Password: --
(Some message about an invalid argument)
(ok, so I'll try again)
losetup -e aes myfile /dev/loop/0
Password: --
(hangs there, a newline or CTRL-C doesn't do anything)
So I figured that the process went in interruptible sleep because the
kernel OOPSed or BUGed...
Here is dmesg:
[17181856.252000] ------------[ cut here ]------------
[17181856.252000] kernel BUG at drivers/block/loop.c:624!
[17181856.252000] invalid operand: 0000 [#1]
[17181856.252000] PREEMPT SMP
[17181856.252000] Modules linked in: loop nls_cp437 vfat fat sg sd_mod
usb_storage rfcomm l2cap bluetooth ppdev radeon drm ipv6 acpi_cpufreq
cpufreq_userspace cpufreq_stats freq_table cpufreq_powersave cpufreq_ondemand
cpufreq_conservative video tc1100_wmi sony_acpi pcc_acpi hotkey dev_acpi
container button acpi_sbs battery ac i2c_acpi_ec i2c_core nls_utf8 ntfs
af_packet dm_mod md_mod sr_mod sbp2 scsi_mod parport_pc lp parport 3c574_cs
wlan_wep wlan_scan_sta pcmcia ath_pci joydev ath_rate_sample 8139cp wlan
ath_hal tsdev sdhci mmc_core 8139too yenta_socket mii snd_atiixp rsrc_nonstatic
pcmcia_core snd_atiixp_modem snd_ac97_codec snd_ac97_bus usbhid snd_pcm_oss
snd_mixer_oss snd_pcm serio_raw snd_timer pcspkr snd psmouse ati_agp agpgart
soundcore shpchp pci_hotplug snd_page_alloc evdev ext3 jbd ide_generic ohci1394
ieee1394 ehci_hcd ohci_hcd usbcore ide_cd cdrom ide_disk generic atiixp thermal
processor fan capability commoncap vga16fb vgastate fbcon tileblit font bitblit
softcursor
[17181856.252000] CPU: 1
[17181856.252000] EIP: 0060:[<e0e6be64>] Tainted: P VLI
[17181856.252000] EFLAGS: 00010246 (2.6.15-28-686)
[17181856.252000] EIP is at loop_thread+0x124/0x140 [loop]
[17181856.252000] eax: 00000000 ebx: 00000000 ecx: c6a55000 edx: 00000000
[17181856.252000] esi: c6a55000 edi: 00000000 ebp: c6a550ec esp: c65ddfc8
[17181856.252000] ds: 007b es: 007b ss: 0068
[17181856.252000] Process loop0 (pid: 7507, threadinfo=c65dc000 task=ce6a6560)
[17181856.252000] Stack: c6a55000 ffffffec 00000000 c6a55100 e0e6bd40 00000000
00000000 00000000
[17181856.252000] c0101525 c6a55000 00000000 00000000 00bc0051 00cf006b
[17181856.252000] Call Trace:
[17181856.252000] [<e0e6bd40>] loop_thread+0x0/0x140 [loop]
[17181856.252000] [<c0101525>] kernel_thread_helper+0x5/0x10
[17181856.252000] Code: ff 02 0f 8e e8 14 00 00 83 c4 10 31 c0 5b 5e 5f 5d c3
8b 43 3c 89 34 24 89 44 24 04 e8 b6 00 00 00 89 1c 24 e8 be de 30 df eb cc <0f>
0b 70 02 f4 d5 e6 e0 eb 9c 89 e8 e8 cb 44 4a df eb bd 89 f6
[17181856.252000] <6>usb 1-3: USB disconnect, address 5
[17182153.608000] usb 1-3: new low speed USB device using ohci_hcd and address 6
[17182153.820000] input: HID 413c:3010 as /class/input/input7
[17182153.820000] input: USB HID v1.10 Mouse [HID 413c:3010] on
usb-0000:00:13.0-3
...and that's me at the bottom, removing the usb stick that had the
encrypted filesystem on a file.
** Affects: Ubuntu
Importance: Undecided
Status: Unconfirmed
--
encrypted loopback file BUGs kernel
https://launchpad.net/bugs/86793
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