From: "Chuck Lever" <chucklever@gmail.com>
Subject: rpc.idmapd oops with latest NFS bits from your web site
Date: Thu, 10 Aug 2006 15:21:41 -0400
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To: "Trond Myklebust" <trond.myklebust@fys.uio.no>
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I ran connectathon basic tests 20 times against a Linux NFSv3 server.
At the end of the test I got this oops.  This is repeatable, but not
100% of the time.

My test client is a dual core 1.83GHz laptop running over GbE.  FC5 is
installed.  Mount options are "rw,intr,tcp,vers=3"

Aug 10 15:16:31 picasso kernel: BUG: unable to handle kernel paging
request at virtual address 6b6b6bc3
Aug 10 15:16:31 picasso kernel:  printing eip:
Aug 10 15:16:31 picasso kernel: c015a1dc
Aug 10 15:16:31 picasso kernel: *pde = 00000000
Aug 10 15:16:31 picasso kernel: Oops: 0000 [#1]
Aug 10 15:16:31 picasso kernel: SMP
Aug 10 15:16:31 picasso kernel: Modules linked in: nfs lockd nfs_acl
sunrpc ext3 jbd dm_mirror dm_mod parport_pc parport usbhid nvram
uhci_hcd ehci_hcd sr_mod snd_hda_intel snd_hda_codec snd_seq_dummy
snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss
snd_mixer_oss tg3 snd_pcm i2c_i801 snd_timer snd
soundcore intel_agp snd_page_alloc i2c_core agpgart rtc usbcore xfs
ata_piix libata sd_mod scsi_mod
Aug 10 15:16:31 picasso kernel: CPU:    1
Aug 10 15:16:31 picasso kernel: EIP:    0060:[<c015a1dc>]    Not tainted VLI
Aug 10 15:16:31 picasso kernel: EFLAGS: 00010202   (2.6.18-rc4 #2)
Aug 10 15:16:31 picasso kernel: EIP is at cdev_put+0x8/0x3d
Aug 10 15:16:31 picasso kernel: eax: 6b6b6b6b   ebx: 40000010   ecx:
00000000   edx: f6a26604
Aug 10 15:16:31 picasso kernel: esi: f6a26604   edi: f5532984   ebp:
f7f5df60   esp: f7f5df5c
Aug 10 15:16:31 picasso kernel: ds: 007b   es: 007b   ss: 0068
Aug 10 15:16:31 picasso kernel: Process rpc.idmapd (pid: 3203,
ti=f7f5d000 task=f711f4d0 task.ti=f7f5d000)
Aug 10 15:16:31 picasso kernel: Stack: 40000010 f7f5df80 c01538df
f5302124 f6e77370 f6a26604 f5532984 f7f56ca8
Aug 10 15:16:31 picasso kernel:        00000000 f7f5df88 c015398e
f7f5df9c c01512dd f7f56ca8 00000009 f7f56d28
Aug 10 15:16:31 picasso kernel:        f7f5dfb4 c0152544 f5532984
00000009 80014940 80013810 f7f5d000 c01028f1
Aug 10 15:16:31 picasso kernel: Call Trace:
Aug 10 15:16:31 picasso kernel:  [<c01538df>] __fput+0xc5/0x15d
Aug 10 15:16:31 picasso kernel:  [<c015398e>] fput+0x17/0x19
Aug 10 15:16:31 picasso kernel:  [<c01512dd>] filp_close+0x51/0x5b
Aug 10 15:16:31 picasso kernel:  [<c0152544>] sys_close+0x7b/0x8f
Aug 10 15:16:31 picasso kernel:  [<c01028f1>] sysenter_past_esp+0x56/0x8d
Aug 10 15:16:31 picasso kernel: DWARF2 unwinder stuck at
sysenter_past_esp+0x56/0x8d
Aug 10 15:16:31 picasso kernel: Leftover inexact backtrace:
Aug 10 15:16:31 picasso kernel:  [<c0103b98>] show_stack_log_lvl+0x8c/0x97
Aug 10 15:16:31 picasso kernel:  [<c0103ccf>] show_registers+0x12c/0x199
Aug 10 15:16:31 picasso kernel:  [<c0103ebd>] die+0x181/0x26d
Aug 10 15:16:31 picasso kernel:  [<c02d55ab>] do_page_fault+0x3e5/0x4ad
Aug 10 15:16:31 picasso kernel:  [<c01035a9>] error_code+0x39/0x40
Aug 10 15:16:31 picasso kernel:  [<c01538df>] __fput+0xc5/0x15d
Aug 10 15:16:31 picasso kernel:  [<c015398e>] fput+0x17/0x19
Aug 10 15:16:31 picasso kernel:  [<c01512dd>] filp_close+0x51/0x5b
Aug 10 15:16:31 picasso kernel:  [<c0152544>] sys_close+0x7b/0x8f
Aug 10 15:16:31 picasso kernel:  [<c01028f1>] sysenter_past_esp+0x56/0x8d
Aug 10 15:16:31 picasso kernel: Code: c3 55 89 e5 89 50 68 89 48 6c 50
68 79 a2 15 c0 68 24 a0 15 c0 6a 00 a1 20 58 61 c0 e8 69 ee 0b 00 c9
c3 55 89 e5 53 85
c0 74 32 <8b> 58 58 e8 ae f7 04 00 85 db 74 26 89 e0 25 00 f0 ff ff 8b 40
Aug 10 15:16:31 picasso kernel: EIP: [<c015a1dc>] cdev_put+0x8/0x3d
SS:ESP 0068:f7f5df5c

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