Public bug reported:
Binary package hint: linux-image-2.6.37-7-generic
[ 5761.809455] BUG: unable to handle kernel NULL pointer dereference at
0000000000000110
[ 5761.809485] IP: [<ffffffff81259a60>] ecryptfs_privileged_open+0x50/0x260
[ 5761.809504] PGD afede067 PUD af876067 PMD 0
[ 5761.809521] Oops: 0000 [#1] SMP
[ 5761.809530] last sysfs file:
/sys/devices/pci0000:00/0000:00:14.4/0000:02:06.0/local_cpus
[ 5761.809542] CPU 1
[ 5761.809547] Modules linked in: cryptd aes_x86_64 aes_generic dm_crypt
snd_hda_codec_realtek snd_hda_intel snd_hda_codec snd_hwdep snd_pcm ppdev
snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq snd_timer snd_seq_device
rt2870sta(C) snd psmouse edac_core serio_raw crc_ccitt soundcore snd_page_alloc
i2c_piix4 k8temp edac_mce_amd parport_pc shpchp lp parport nouveau ttm
drm_kms_helper drm usb_storage 8139too i2c_algo_bit usbhid hid uas video ahci
8139cp libahci output pata_atiixp
[ 5761.809702]
[ 5761.809709] Pid: 1556, comm: nepomukservices Tainted: G WC
2.6.37-7-generic #19-Ubuntu 0A7C/HP Compaq dx2250 Microtower
[ 5761.809723] RIP: 0010:[<ffffffff81259a60>] [<ffffffff81259a60>]
ecryptfs_privileged_open+0x50/0x260
[ 5761.809740] RSP: 0018:ffff8800aff01b68 EFLAGS: 00010202
[ 5761.809748] RAX: 0000000000000000 RBX: ffff88009189b300 RCX: ffff8800afa78780
[ 5761.809758] RDX: ffff8800c7924500 RSI: ffff8800c7924500 RDI: ffff88009189b300
[ 5761.809768] RBP: ffff8800aff01bd8 R08: 0000000000000000 R09: ffff8800c55c5a40
[ 5761.809777] R10: 0000000000000000 R11: 0000000000000001 R12: ffff8800c7924500
[ 5761.809787] R13: ffff8800395bb2f0 R14: ffff8800c7924500 R15: ffff88009189b300
[ 5761.809798] FS: 00007fe47eff6760(0000) GS:ffff8800cfd00000(0000)
knlGS:00000000f69a6a90
[ 5761.809808] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 5761.809817] CR2: 0000000000000110 CR3: 00000000acd8f000 CR4: 00000000000006e0
[ 5761.809827] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 5761.809837] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
[ 5761.809847] Process nepomukservices (pid: 1556, threadinfo ffff8800aff00000,
task ffff8800acc5c440)
[ 5761.809858] Stack:
[ 5761.809863] ffff8800a09dad80 ffff8800acc5c440 ffff8800aff01f38
ffff8800aff00000
[ 5761.809882] ffff88002ed3d480 00000000000080d0 ffffffff8124cca0
ffffffff8124cd01
[ 5761.809899] ffff8800aff01bc8 ffff8800395bb0c0 ffff8800395bb2f8
0000000000000000
[ 5761.809915] Call Trace:
[ 5761.809924] [<ffffffff8124cca0>] ? ecryptfs_open+0x0/0x290
[ 5761.809935] [<ffffffff8124cd01>] ? ecryptfs_open+0x61/0x290
[ 5761.809946] [<ffffffff8124fc94>] ecryptfs_init_persistent_file+0xa4/0xd0
[ 5761.809956] [<ffffffff8124ce88>] ecryptfs_open+0x1e8/0x290
[ 5761.809967] [<ffffffff8124cca0>] ? ecryptfs_open+0x0/0x290
[ 5761.809978] [<ffffffff81162811>] __dentry_open+0xd1/0x300
[ 5761.809988] [<ffffffff8116f384>] ? inode_permission+0xb4/0xe0
[ 5761.809998] [<ffffffff81163cf1>] nameidata_to_filp+0x61/0x70
[ 5761.810007] [<ffffffff81172438>] finish_open+0xe8/0x1d0
[ 5761.810014] [<ffffffff811551af>] ? kmem_cache_alloc_notrace+0xaf/0xd0
[ 5761.810014] [<ffffffff811725a7>] do_last+0x87/0x5d0
[ 5761.810014] [<ffffffff81172c51>] do_filp_open+0x161/0x670
[ 5761.810014] [<ffffffff8125017f>] ? ecryptfs_statfs+0x2f/0x40
[ 5761.810014] [<ffffffff8118ee14>] ? statfs_by_dentry+0x74/0xa0
[ 5761.810014] [<ffffffff812d807d>] ? _atomic_dec_and_lock+0x4d/0x80
[ 5761.810014] [<ffffffff812e4317>] ? __strncpy_from_user+0x27/0x60
[ 5761.810014] [<ffffffff8117f1a7>] ? alloc_fd+0xf7/0x150
[ 5761.810014] [<ffffffff81163d6a>] do_sys_open+0x6a/0x170
[ 5761.810014] [<ffffffff81163e90>] sys_open+0x20/0x30
[ 5761.810014] [<ffffffff8100c132>] system_call_fastpath+0x16/0x1b
[ 5761.810014] Code: 89 fd 48 89 f3 49 89 d4 74 09 8b 06 85 c0 74 60 f0 ff 06
4d 85 e4 74 09 f0 41 ff 84 24 d0 00 00 00 48 8b 43 10 4c 89 e6 48 89 df <48> 8b
80 10 01 00 00 48 8b 40 50 83 e0 01 83 f8 01 19 d2 83 e2
[ 5761.810014] RIP [<ffffffff81259a60>] ecryptfs_privileged_open+0x50/0x260
[ 5761.810014] RSP <ffff8800aff01b68>
[ 5761.810014] CR2: 0000000000000110
[ 5761.831186] ---[ end trace 46912c50b38354a9 ]---
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/686373
Title:
Kernel null pointer on ecryptfs_privileged_open
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