Public bug reported:
Binary package hint: linux-image-2.6.27-9-generic
When opening a file for the first time in my Private folder with Emacs
(compiled from CVS HEAD), the attached Oops occur. The funny thing is
that if I open it with less first, the Oops will not show.
My ecryptfs is running on top of reiserfs 3.6.
$ uname -a
Linux ubuntu 2.6.27-9-generic #1 SMP Thu Nov 20 21:57:00 UTC 2008 i686 GNU/Linux
$ cat /proc/version_signature
Ubuntu 2.6.27-9.19-generic
$ dmesg:
[ 4114.680276] ecryptfs_init_crypt_ctx: cryptfs: init_crypt_ctx(): Error
initializing cipher [aes]
[ 4114.682057] BUG: unable to handle kernel NULL pointer dereference at 00000006
[ 4114.682063] IP: [<e0e8ba81>] :ecryptfs:decrypt_scatterlist+0x41/0xf0
[ 4114.682081] *pde = 00000000
[ 4114.682086] Oops: 0000 [#1] SMP
[ 4114.682091] Modules linked in: aes_i586 aes_generic ecb crypto_blkcipher
ecryptfs af_packet binfmt_misc radeon drm bridge stp rfcomm bnep sco l2cap
ppdev ipv6 speedstep_centrino cpufreq_powersave cpufreq_stats cpufreq_userspace
cpufreq_ondemand cpufreq_conservative freq_table container wmi sbs pci_slot
sbshc iptable_filter ip_tables x_tables ext3 jbd mbcache sbp2 lp loop joydev
pcmcia thinkpad_acpi rfkill led_class nvram evdev snd_intel8x0 snd_ac97_codec
btusb psmouse serio_raw ac97_bus battery bluetooth snd_pcm_oss snd_mixer_oss ac
snd_pcm snd_seq_dummy video output nsc_ircc parport_pc parport irda crc_ccitt
pcspkr ipw2100 snd_seq_oss snd_seq_midi snd_rawmidi ieee80211 ieee80211_crypt
yenta_socket rsrc_nonstatic snd_seq_midi_event pcmcia_core snd_seq snd_timer
snd_seq_device snd soundcore snd_page_alloc button iTCO_wdt iTCO_vendor_support
intel_agp shpchp pci_hotplug agpgart reiserfs usb_storage libusual sr_mod cdrom
sd_mod crc_t10dif sg ata_piix ata_generic pata_acpi libata ehci_hcd e1000
ohci1394 scsi_mod uhci_hcd ieee1394 usbcore dock thermal processor fan fbcon
tileblit font bitblit softcursor fuse
[ 4114.682201]
[ 4114.682204] Pid: 19384, comm: emacs Not tainted (2.6.27-9-generic #1)
[ 4114.682208] EIP: 0060:[<e0e8ba81>] EFLAGS: 00210246 CPU: 0
[ 4114.682218] EIP is at decrypt_scatterlist+0x41/0xf0 [ecryptfs]
[ 4114.682222] EAX: fffffffe EBX: c2e848ec ECX: 00000010 EDX: c2e84938
[ 4114.682225] ESI: fffffffe EDI: c2e849a0 EBP: dfa65cb8 ESP: dfa65c8c
[ 4114.682228] DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[ 4114.682232] Process emacs (pid: 19384, ti=dfa64000 task=dd676480
task.ti=dfa64000)
[ 4114.682235] Stack: 00000030 00000000 00000000 dfa65cf8 dfa65ce4 fffffffe
dfa65d0c 00000200
[ 4114.682245] 00001000 00000000 00000000 dfa65d28 e0e8ca0e 00001000
dfa65d0c c01b1a42
[ 4114.682254] 00000000 00000000 c1442f5c c2e848ec c111d24c 00000000
c111d24e 00000000
[ 4114.682262] Call Trace:
[ 4114.682266] [<e0e8ca0e>] ? ecryptfs_decrypt_extent+0x15e/0x200 [ecryptfs]
[ 4114.682278] [<c01b1a42>] ? fsnotify_access+0x72/0x80
[ 4114.682287] [<e0e8cb71>] ? ecryptfs_decrypt_page+0xc1/0x1b0 [ecryptfs]
[ 4114.682298] [<c0191756>] ? __inc_zone_state+0x16/0x80
[ 4114.682306] [<e0e8a49f>] ? ecryptfs_readpage+0xcf/0x150 [ecryptfs]
[ 4114.682316] [<c0185477>] ? add_to_page_cache_lru+0x47/0x60
[ 4114.682325] [<c018cf68>] ? __do_page_cache_readahead+0x168/0x1e0
[ 4114.682331] [<c018d2d1>] ? ondemand_readahead+0xf1/0x150
[ 4114.682337] [<c018d3ed>] ? page_cache_sync_readahead+0x2d/0x40
[ 4114.682342] [<c01861f1>] ? do_generic_file_read+0x251/0x4e0
[ 4114.682348] [<c0186523>] ? generic_file_aio_read+0xa3/0x1d0
[ 4114.682353] [<c0183f80>] ? file_read_actor+0x0/0xe0
[ 4114.682359] [<e0e871a0>] ? ecryptfs_read_update_atime+0x30/0x70 [ecryptfs]
[ 4114.682381] [<c01b1f19>] ? do_sync_read+0xd9/0x120
[ 4114.682387] [<c01474b0>] ? autoremove_wake_function+0x0/0x50
[ 4114.682393] [<c02353be>] ? apparmor_file_permission+0x1e/0x40
[ 4114.682401] [<c0213664>] ? security_file_permission+0x14/0x20
[ 4114.682407] [<c01b1fad>] ? rw_verify_area+0x4d/0xc0
[ 4114.682412] [<c01b26cd>] ? vfs_read+0x9d/0x110
[ 4114.682417] [<c01b1e40>] ? do_sync_read+0x0/0x120
[ 4114.682422] [<c01b2812>] ? sys_read+0x42/0x70
[ 4114.682426] [<c0103f7b>] ? sysenter_do_call+0x12/0x2f
[ 4114.682433] =======================
[ 4114.682435] Code: 00 00 00 89 4d e0 8b 40 24 c7 45 f0 00 02 00 00 89 45 e8
8b 45 0c 89 45 ec 89 f8 e8 5a 1a 4f df 8b 73 24 8d 53 4c 8b 4b 14 89 f0 <ff> 56
08 85 c0 75 78 8b 45 08 c7 44 24 04 08 29 e9 e0 c7 04 24
[ 4114.682482] EIP: [<e0e8ba81>] decrypt_scatterlist+0x41/0xf0 [ecryptfs]
SS:ESP 0068:dfa65c8c
[ 4114.682496] ---[ end trace 85676ea06c4c15f0 ]---
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
--
ecryptfs Oops
https://bugs.launchpad.net/bugs/314701
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