Comment 0 for bug 415252

Binary package hint: linux-image

Kernel BUG'ed on me when saving a file under ecryptfs directory ~/Private using Emacs.

Here's the kernel log output:
[204479.018768] ecryptfs_init_crypt_ctx: cryptfs: init_crypt_ctx(): Error initializing cipher [aes]
[204479.018778] ecryptfs_new_file_context: Error initializing cryptographic context for cipher [aes]: rc = [-4]
[204479.018785] ecryptfs_initialize_file: Error creating new file context; rc = [-4]
[204479.018967] ------------[ cut here ]------------
[204479.018973] kernel BUG at /build/buildd/linux-2.6.28/fs/ecryptfs/read_write.c:234!
[204479.018978] invalid opcode: 0000 [#1] SMP
[204479.018985] last sysfs file: /sys/devices/pci0000:00/0000:00:1c.1/0000:03:00.0/rfkill/rfkill0/state
[204479.018992] Dumping ftrace buffer:
[204479.018997] (ftrace buffer empty)
[204479.019000] Modules linked in: aes_i586 aes_generic cdc_ether cdc_acm cdc_wdm usbnet mii usbhid binfmt_misc radeon ppdev drm bridge stp bnep input_polldev dm_crypt joydev lp parport snd_hda_intel arc4 ecb snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi iwl3945 snd_rawmidi snd_seq_midi_event pcmcia iTCO_wdt iTCO_vendor_support snd_seq mac80211 tifm_7xx1 psmouse snd_timer snd_seq_device pcspkr sdhci_pci sdhci video tifm_core output serio_raw yenta_socket rsrc_nonstatic pcmcia_core snd soundcore thinkpad_acpi led_class nvram intel_agp agpgart snd_page_alloc cfg80211 ohci1394 ieee1394 tg3 fbcon tileblit font bitblit softcursor
[204479.019112]
[204479.019117] Pid: 18182, comm: emacs Not tainted (2.6.28-15-generic #48-Ubuntu) 94503HG
[204479.019123] EIP: 0060:[<c026867d>] EFLAGS: 00010246 CPU: 0
[204479.019133] EIP is at ecryptfs_read_lower+0x7d/0xb0
[204479.019137] EAX: 00000000 EBX: 00000000 ECX: 00000000 EDX: 00000000
[204479.019143] ESI: 00000000 EDI: f675c500 EBP: d367bda4 ESP: d367bd80
[204479.019148] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[204479.019153] Process emacs (pid: 18182, ti=d367a000 task=dbe27110 task.ti=d367a000)
[204479.019158] Stack:
[204479.019161] d367bda4 00000296 c0269ea4 c200f23c ef873000 f675c65c ef873000 f675c740
[204479.019174] f675c500 d367bdc8 c0269ec6 00001000 f675c500 c4ed7330 f675c66c c4ed7330
[204479.019189] f675c740 d367be54 d367be04 c0266418 00000000 00000000 d367bde0 c05001f8
[204479.019204] Call Trace:
[204479.019208] [<c0269ea4>] ? ecryptfs_read_metadata+0x44/0x160
[204479.019217] [<c0269ec6>] ? ecryptfs_read_metadata+0x66/0x160
[204479.019225] [<c0266418>] ? ecryptfs_setattr+0xf8/0x1e0
[204479.019232] [<c05001f8>] ? _spin_lock+0x8/0x10
[204479.019240] [<c01d15e4>] ? fnotify_change+0x384/0x3b0
[204479.019248] [<c01c548c>] ? path_permission+0x2c/0x40
[204479.019256] [<c01bc941>] ? do_truncate+0x71/0x90
[204479.019263] [<c02a978a>] ? apparmor_path_permission+0x5a/0x80
[204479.019272] [<c01c5cfb>] ? may_open+0x18b/0x200
[204479.019279] [<c01c90e2>] ? do_filp_open+0x192/0x7b0
[204479.019287] [<c01d2230>] ? alloc_fd+0xe0/0x100
[204479.019294] [<c01bb9af>] ? do_sys_open+0x5f/0x130
[204479.019301] [<c01bbae9>] ? sys_open+0x29/0x40
[204479.019308] [<c0103f6b>] ? sysenter_do_call+0x12/0x2f
[204479.019316] Code: 55 ec e8 f7 58 f5 ff 89 c2 89 e0 25 00 e0 ff ff 89 58 18 31 db 85 d2 78 1d 8b 45 f0 e8 9d 68 29 00 89 d8 83 c4 18 5b 5e 5f 5d c3 <0f> 0b eb fe 8d b4 26 00 00 00 00 8b 45 08 bb ea ff ff ff 89 54
[204479.019397] EIP: [<c026867d>] ecryptfs_read_lower+0x7d/0xb0 SS:ESP 0068:d367bd80
[204479.019409] ---[ end trace 4f4b2efc3a7aabf0 ]---