No mount of nfs4 partition with kernel 2.6.22-14-generic possible

[elrodeo]

Binary package hint: linux-image-2.6.22-14-generic

On our chair we mount nfs4 partitions with authorization by Kerberos protocol. With todays updates to the kernel 2.6.22-14 it is no longer possible. I get following output in the console if I activate the verbose option of 'mount':

$ mount /path
mount.nfs4: pinging: prog 100003 vers 4 prot tcp port 2049

And nothing happens, nothing is mounted. If I try to unmount and to mount the partition one more time, my PC freezes completely (even without any reaction to Alt+B+SysReq).

I can observe the following output in dmesg:

[ 159.805249] printing eip:
[ 159.805251] f8bb2d50
[ 159.805253] *pde = 00000000
[ 159.805258] Oops: 0000 [#1]
[ 159.805260] SMP
[ 159.805264] Modules linked in: des cbc blkcipher binfmt_misc rfcomm l2cap bluetooth vboxdrv nfsd exportfs ppdev i915 drm speedstep_lib cpufreq_powersave cpufreq_stats cpufreq_userspace cpufreq_ondemand cpufreq_conservative freq_table video container sbs button dock ac battery ipv6 rpcsec_gss_krb5 auth_rpcgss lp nfs lockd sunrpc snd_intel8x0 snd_ac97_codec ac97_bus snd_pcm_oss snd_mixer_oss snd_pcm snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi parport_pc parport pcspkr snd_seq_midi_event iTCO_wdt iTCO_vendor_support snd_seq snd_timer snd_seq_device snd soundcore snd_page_alloc shpchp pci_hotplug intel_agp i2c_i810 i2c_algo_bit agpgart i2c_core evdev reiserfs usbhid hid sg sr_mod cdrom sd_mod ata_piix floppy e100 mii aic7xxx scsi_transport_spi ata_generic libata scsi_mod ehci_hcd uhci_hcd usbcore thermal processor fan fuse apparmor commoncap
[ 159.805335] CPU: 0
[ 159.805336] EIP: 0060:[<f8bb2d50>] Not tainted VLI
[ 159.805337] EFLAGS: 00010292 (2.6.22-14-generic #1)
[ 159.805366] EIP is at rpc_call_sync+0x10/0xa0 [sunrpc]
[ 159.805369] eax: 2af76086 ebx: dc9a7a00 ecx: 00000000 edx: 00000000
[ 159.805372] esi: fffffffb edi: dd093b9c ebp: dd093b9c esp: dd093b68
[ 159.805375] ds: 007b es: 007b fs: 00d8 gs: 0033 ss: 0068
[ 159.805378] Process mount.nfs4 (pid: 5610, ti=dd092000 task=eda639f0 task.ti=dd092000)
[ 159.805380] Stack: dd093bac 00000001 eadc5128 dc9a7a00 dd093d1e dd093bac dd093b9c f8ce0ac1
[ 159.805388] 00000000 00000000 00000000 00000000 00000000 f8d06638 dd093d1e dd093b88
[ 159.805395] 00000000 00000000 00000000 eadc5128 dc9a7200 eadc5128 dd093d1e f8cd17b3
[ 159.805402] Call Trace:
[ 159.805421] [<f8ce0ac1>] nfs4_server_capabilities+0x71/0xe0 [nfs]
[ 159.805484] [<f8cd17b3>] nfs4_get_root+0x53/0x260 [nfs]
[ 159.805670] [<f8cd4e71>] nfs4_get_sb+0x291/0x370 [nfs]
[ 159.805805] [<c01824e6>] vfs_kern_mount+0xb6/0x130
[ 159.805837] [<c01825bf>] do_kern_mount+0x3f/0xf0
[ 159.805854] [<c019803b>] do_mount+0x66b/0x740
[ 159.805880] [<c02c0c04>] tcp_v4_send_check+0x44/0xf0
[ 159.805900] [<c02ba869>] tcp_transmit_skb+0x3f9/0x800
[ 159.805906] [<c02782af>] sock_aio_read+0x11f/0x130
[ 159.805924] [<c016d217>] __handle_mm_fault+0x687/0xb00
[ 159.805946] [<c0131ab8>] mod_timer+0x18/0x40
[ 159.805992] [<c02f5e59>] do_page_fault+0x389/0x690
[ 159.806042] [<c02f4352>] error_code+0x72/0x80
[ 159.806067] [<c02f00d8>] clip_constructor+0x8/0xa0
[ 159.806073] [<c01968db>] copy_mount_options+0xab/0x150
[ 159.806100] [<c0198677>] sys_mount+0x77/0xc0
[ 159.806119] [<c01041d2>] sysenter_past_esp+0x6b/0xa9
[ 159.806165] =======================
[ 159.806167] Code: 00 89 04 24 31 c0 c7 44 24 04 ff ff ff ff e8 28 f3 57 c7 83 c4 08 c3 8d 74 26 00 55 57 89 d7 56 89 ca 53 be fb ff ff ff 83 ec 0c <f6> 40 30 20 74 0a 83 c4 0c 89 f0 5b 5e 5f 5d c3 f6 c1 01 75 75
[ 159.806204] EIP: [<f8bb2d50>] rpc_call_sync+0x10/0xa0 [sunrpc] SS:ESP 0068:dd093b68

If I boot the kernel 2.6.20-16-generic everything works fine.

Thanks in advance!

[Brian Buchanan (brianbuchanan)]

Bug 177439 might be related https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.22/+bug/177439 and this thread http://ubuntuforums.org/showthread.php?t=644670

[elrodeo (iam669)]

Yes, it seems to be the same problem.

[Claude Boucher (bouchecl)]

Also reported here:

https://bugs.launchpad.net/ubuntu/+source/nfs-utils/+bug/148600

[Launchpad Janitor (janitor)]

Beginning with the Hardy Heron 8.04 development cycle, all open Ubuntu kernel bugs need to be reported against the "linux" kernel package. We are automatically migrating this bug to the new "linux" package. However, development has already began for the upcoming Intrepid Ibex 8.10 release. It would be helpful if you could test the upcoming release and verify if this is still an issue - http://www.ubuntu.com/testing . If the issue still exists, please update this report by changing the Status of the "linux" task from "Incomplete" to "New". We appreciate your patience and understanding as we make this transition. Thanks!