Public bug reported:
Binary package hint: linux-image-2.6.22-14-generic
I am reporting this bug for: linux-image-2.6.22-14-generic
I can reproduce it also with linux-image-2.6.20-16 (upgraded to gutsy lately
but kept old kernels)
However, linux-image-2.6.20-15 DOES WORK flawlessly!
I am using my ubuntu machine to mount NFS4 mounts with krb5 on a Debian
Sarge server. As I said it worked fine with the older feisty kernel.
With the newer kernels the machine crashes, while starting. In order to
find out when it exactly I did:
1. renamed the nfs.module under the working kernel so it wasn't loaded
automatically
2. started kernel 2.6.22-14 in single user mode
3. Loaded the renamed module via insmod (everything still ok)
4. started portmapper, krb5-kds and nfs-common (still everything ok)
5. Mounted nfs-share with krb5 -> Kernel oops:
Feb 2 18:28:58 biene kernel: [ 720.128000] BUG: unable to handle kernel NULL
pointer dereference at virtual address 00000038
Feb 2 18:28:58 biene kernel: [ 720.128000] printing eip:
Feb 2 18:28:58 biene kernel: [ 720.128000] e0d4a040
Feb 2 18:28:58 biene kernel: [ 720.128000] *pde = 00000000
Feb 2 18:28:58 biene kernel: [ 720.128000] Oops: 0000 [#1]
Feb 2 18:28:58 biene kernel: [ 720.128000] SMP
Feb 2 18:28:58 biene kernel: [ 720.128000] Modules linked in: des cbc
blkcipher nfs binfmt_misc rfcomm l2cap bluetooth ppdev radeon drm
cpufreq_conservative cpufreq_stats cpufreq_ondemand freq_table
cpufreq_userspace cpufreq_powersave ac button sbs container video dock battery
ipv6 rpcsec_gss_krb5 auth_rpcgss lockd sunrpc lp snd_cmipci gameport
snd_pcm_oss snd_mixer_oss snd_pcm snd_page_alloc snd_opl3_lib snd_hwdep
snd_mpu401_uart snd_seq_dummy irtty_sir joydev snd_seq_oss snd_seq_midi sir_dev
snd_rawmidi irda xpad snd_seq_midi_event crc_ccitt usbhid hid snd_seq snd_timer
snd_seq_device pcspkr serio_raw snd soundcore via686a psmouse i2c_isa
i2c_viapro i2c_core parport_pc parport via_agp shpchp pci_hotplug agpgart
af_packet evdev ext3 jbd mbcache ide_cd cdrom ide_disk floppy pdc202xx_old
e1000 uhci_hcd usbcore via82cxxx ide_core ata_generic libata scsi_mod thermal
processor fan fuse apparmor commoncap
Feb 2 18:28:58 biene kernel: [ 720.128000] CPU: 0
Feb 2 18:28:58 biene kernel: [ 720.128000] EIP: 0060:[<e0d4a040>] Not
tainted VLI
Feb 2 18:28:58 biene kernel: [ 720.128000] EFLAGS: 00010206
(2.6.22-14-generic #1)
Feb 2 18:28:58 biene kernel: [ 720.128000] EIP is at nfs_fhget+0xd0/0x3e0
[nfs]
Feb 2 18:28:58 biene kernel: [ 720.128000] eax: 00000000 ebx: 00000000
ecx: def1d674 edx: 00004180
Feb 2 18:28:58 biene kernel: [ 720.128000] esi: def1d600 edi: d962bbd4
ebp: d6fb1128 esp: d962bb88
Feb 2 18:28:58 biene kernel: [ 720.128000] ds: 007b es: 007b fs: 00d8
gs: 0033 ss: 0068
Feb 2 18:28:58 biene kernel: [ 720.128000] Process mount.nfs4 (pid: 6246,
ti=d962a000 task=df85c530 task.ti=d962a000)
Feb 2 18:28:58 biene kernel: [ 720.128000] Stack: e0d49f10 d962bbac 0000000a
c0139679 c14099dc d6fb1000 00019a48 c043c950
Feb 2 18:28:58 biene kernel: [ 720.128000] c012dc04 d962bc66 d962bbd4
d962bbd4 def1d600 d962bc64 d962bd1e e0d488d7
Feb 2 18:28:58 biene kernel: [ 720.128000] df85c6f0 c1403000 d9524c00
00000002 00000000 00000000 00000000 00000000
Feb 2 18:28:58 biene kernel: [ 720.128000] Call Trace: Feb 2 18:28:58 biene
kernel: [ 720.128000] [<e0d49f10>] nfs_init_locked+0x0/0x60 [nfs]
Feb 2 18:28:58 biene kernel: [ 720.128000] [__rcu_process_callbacks+105/464]
__rcu_process_callbacks+0x69/0x1d0
Feb 2 18:28:58 biene kernel: [ 720.128000] [tasklet_action+84/192]
tasklet_action+0x54/0xc0
Feb 2 18:28:58 biene kernel: [ 720.128000] [<e0d488d7>]
nfs4_get_root+0x177/0x260 [nfs]
Feb 2 18:28:58 biene kernel: [ 720.128000] [<e0d4be71>]
nfs4_get_sb+0x291/0x370 [nfs]
Feb 2 18:28:58 biene kernel: [ 720.128000] [vfs_kern_mount+182/304]
vfs_kern_mount+0xb6/0x130
Feb 2 18:28:58 biene kernel: [ 720.128000] [do_kern_mount+63/240]
do_kern_mount+0x3f/0xf0
Feb 2 18:28:58 biene kernel: [ 720.128000] [do_mount+1643/1856]
do_mount+0x66b/0x740
Feb 2 18:28:58 biene kernel: [ 720.128000] [tcp_v4_send_check+68/240]
tcp_v4_send_check+0x44/0xf0
Feb 2 18:28:58 biene kernel: [ 720.128000] [tcp_transmit_skb+1017/2048]
tcp_transmit_skb+0x3f9/0x800
Feb 2 18:28:58 biene kernel: [ 720.128000] [sock_aio_read+287/304]
sock_aio_read+0x11f/0x130
Feb 2 18:28:58 biene kernel: [ 720.128000] [__handle_mm_fault+1671/2816]
__handle_mm_fault+0x687/0xb00
Feb 2 18:28:58 biene kernel: [ 720.128000] [__mod_timer+159/176]
__mod_timer+0x9f/0xb0
Feb 2 18:28:58 biene kernel: [ 720.128000] [do_page_fault+905/1680]
do_page_fault+0x389/0x690
Feb 2 18:28:58 biene kernel: [ 720.128000] [error_code+114/128]
error_code+0x72/0x80
Feb 2 18:28:58 biene kernel: [ 720.128000] [copy_mount_options+171/336]
copy_mount_options+0xab/0x150
Feb 2 18:28:58 biene kernel: [ 720.128000] [sys_mount+119/192]
sys_mount+0x77/0xc0
Feb 2 18:28:58 biene kernel: [ 720.128000] [sysenter_past_esp+107/169]
sysenter_past_esp+0x6b/0xa9
Feb 2 18:28:58 biene kernel: [ 720.128000] =======================
Feb 2 18:28:58 biene kernel: [ 720.128000] Code: d8 fe ff ff 89 44 24 14 89
54 24 18 81 8d 3c 01 00 00 82 00 00 00 89 5d 20 8b 57 20 66 89 55 6a 8b 86 64
01 00 00 0f b7 d2 8b 00 <8b> 40 38 8b 40 0c 89 85 90 00 00 00 89 d0 25 00 f0 00
00 3d 00
Feb 2 18:28:58 biene kernel: [ 720.128000] EIP: [<e0d4a040>]
nfs_fhget+0xd0/0x3e0 [nfs] SS:ESP 0068:d962bb88
here i was lucky and the machine did not freeze the first time, however
the mount was not created. When trying the mount again, a second oops
came and then the machine froze.
Although I do not believe it is hardware related I will attach syslog
output while starting and lspci-output. If you need more please let me
know.
** Affects: linux-source-2.6.22 (Ubuntu)
Importance: Undecided
Status: New
--
kernel oops when accessing NFS4 with krb5
https://bugs.launchpad.net/bugs/188410
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