[pnfs] YAKP: yet another kernel panic

[Tigran Mkrtchyan]

great! I will way till Benny updated his tree.

Thanks,
    Tigran.

On 01/27/2010 10:05 PM, Alexandros Batsakis wrote:
> Yeah... I sent a patch to linux-nfs that fixes this
>
> -alexandros
>
> On Wed, Jan 27, 2010 at 12:58 PM, Tigran Mkrtchyan
> <tigran.mkrtchyan at desy.de>  wrote:
>> caused by umount -f after server restart
>>
>> [44072.552049] Got error -512 from the server on DESTROY_SESSION. Session
>> has been destroyed regardless...
>> [44072.568188] BUG: unable to handle kernel NULL pointer dereference at
>> 00000048
>> [44072.568212] IP: [<f89e3f7a>] nfs41_sequence_done+0x11a/0x270 [nfs]
>> [44072.568245] *pde = 00000000
>> [44072.568251] Oops: 0000 [#1] SMP
>> [44072.568258] last sysfs file:
>> /sys/devices/pci0000:00/0000:00:1f.2/host0/target0:0:0/0:0:0:0/block/sda/sda2/stat
>> [44072.568269] Modules linked in: nfslayoutdriver tun nfs lockd fscache
>> nfs_acl auth_rpcgss sunrpc ip6t_LOG xt_tcpudp xt_pkttype ipt_LOG xt_limit
>> arc4 ecb cryptomgr crypto_hash aead pcompress crypto_blkcipher crypto_algapi
>> lib80211_crypt_wep af_packet snd_pcm_oss snd_mixer_oss snd_seq
>> snd_seq_device edd radeon ttm drm_kms_helper drm i2c_algo_bit
>> cpufreq_conservative cpufreq_userspace cpufreq_powersave acpi_cpufreq
>> speedstep_lib ip6t_REJECT nf_conntrack_ipv6 ip6table_raw xt_NOTRACK
>> ipt_REJECT xt_state iptable_raw iptable_filter ip6table_mangle
>> nf_conntrack_netbios_ns nf_conntrack_ipv4 nf_conntrack nf_defrag_ipv4
>> ip_tables ip6table_filter ip6_tables x_tables ipv6 fuse loop snd_intel8x0
>> snd_ac97_codec ipw2200 ac97_bus libipw snd_pcm snd_timer dell_laptop
>> cfg80211 snd i2c_i801 rfkill video tg3 sr_mod soundcore intel_agp i2c_core
>> lib80211 pcspkr dcdbas output libphy cdrom snd_page_alloc sg ac button
>> battery ata_generic uhci_hcd ata_piix ahci rtc_cmos rtc_core rtc_lib
>> ehci_hcd liba
>> ta fan thermal processor thermal_sys hwmon
>> [44072.568406]
>> [44072.568413] Pid: 3105, comm: rpciod/0 Not tainted 2.6.33-rc4-pnfs-1 #18
>> 0J4020/Latitude D810
>> [44072.568422] EIP: 0060:[<f89e3f7a>] EFLAGS: 00010202 CPU: 0
>> [44072.568442] EIP is at nfs41_sequence_done+0x11a/0x270 [nfs]
>> [44072.568451] EAX: 00000000 EBX: f41d1d00 ECX: fffffffb EDX: 00000008
>> [44072.568458] ESI: c44f16e0 EDI: c44f1600 EBP: f6a49f04 ESP: f6a49ee0
>> [44072.568466]  DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
>> [44072.568473] Process rpciod/0 (pid: 3105, ti=f6a48000 task=f69c6e20
>> task.ti=f6a48000)
>> [44072.568481] Stack:
>> [44072.568485]  f6a49f60 f3abf000 f39d9380 f3abf348 f6a49efc f88fbd11
>> f39d9380 c44f1600
>> [44072.568495]<0>  00000000 f6a49f20 f89e4a49 f88fd2cd f69c70b8 dba16570
>> f39d9380 f39d93c8
>> [44072.568508]<0>  f6a49f2c f89010ce f39d9380 f6a49f58 f8901b02 00000000
>> 70d6cf48 00002815
>> [44072.568523] Call Trace:
>> [44072.568545]  [<f88fbd11>] ? xprt_release_xprt+0x71/0x80 [sunrpc]
>> [44072.568567]  [<f89e4a49>] ? nfs41_sequence_call_done+0x19/0xd0 [nfs]
>> [44072.568585]  [<f88fd2cd>] ? xprt_connect_status+0x8d/0x130 [sunrpc]
>> [44072.568604]  [<f89010ce>] ? rpc_exit_task+0x1e/0x50 [sunrpc]
>> [44072.568622]  [<f8901b02>] ? __rpc_execute+0x92/0x290 [sunrpc]
>> [44072.568640]  [<f8901d2b>] ? rpc_async_schedule+0xb/0x10 [sunrpc]
>> [44072.568653]  [<c025ee06>] ? worker_thread+0x136/0x270
>> [44072.568669]  [<f8901d20>] ? rpc_async_schedule+0x0/0x10 [sunrpc]
>> [44072.568681]  [<c02625c0>] ? autoremove_wake_function+0x0/0x40
>> [44072.568690]  [<c025ecd0>] ? worker_thread+0x0/0x270
>> [44072.568698]  [<c026217c>] ? kthread+0x6c/0x80
>> [44072.568706]  [<c0262110>] ? kthread+0x0/0x80
>> [44072.568714]  [<c0204006>] ? kernel_thread_helper+0x6/0x30
>> [44072.568721] Code: f8 e8 c5 0a b5 c7 eb d2 90 c7 42 08 00 00 00 00 e9 19
>> ff ff ff 8d 74 26 00 8b 87 f0 01 00 00 0f b6 d2 c1 e2 02 8d b7 e0 00 00 00
>> <03>  50 48 89 f0 83 02 01 8b 53 0c 89 55 ec e8 43 39 b5 c7 8b 55
>> [44072.568772] EIP: [<f89e3f7a>] nfs41_sequence_done+0x11a/0x270 [nfs]
>> SS:ESP 0068:f6a49ee0
>> [44072.568796] CR2: 0000000000000048
>> [44072.568803] ---[ end trace 1128558a8eb8e7ce ]---
>>
>>
>> Regards,
>>   Tigran
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