Hi,
Am Samstag, 5. Mai 2007 17:40 schrieben Sie:
> Hello,
>
> This morning I updated the kernel on my workstation to the current git
> tree (62ea6d80211ecc88ef516927ecebf64cb505be3f). Upon reboot, I
> cannot change file access permissions of files in a directory that is
> nfs mounted (using NFS4):
>
> $ chmod 0600 $path
> chmod: Changing permissions of `$path': Input/output error
>
> In the kernel log I am getting these gems:
>
> [ 275.990233] decode_attr_group: reply buffer overflowed in line
> 2678.<4>decode
> _attr_group: reply buffer overflowed in line
> 2678.<4>decode_attr_group: reply bu
> ffer overflowed in line 2678.<4>decode_attr_group: reply buffer
> overflowed in li
> ne 2678.<4>decode_attr_group: reply buffer overflowed in line
> 2678.<4>decode_att
> r_group: reply buffer overflowed in line 2678.
>
> The server is Linux running Debian testing with the kernel updated to
> 2.6.20-1-686 from
> (http://ftp.us.debian.org/debian/pool/main/l/linux-2.6/linux-image-2.6.20-1
>-686_2.6.20-3_i386.deb)
>
> Kernel 2.6.21 works fine on the client.
I have the same problem with 2.6.21-mm1. Server is openSUSE 10.2.
Additionally, unmounting gives the the ops below. I'm using autofs with the
following mount options: rw,noatime,nodiratime.
BUG: unable to handle kernel NULL pointer dereference at virtual address
00000030
printing eip:
dcfbac13
*pde = 00000000
Oops: 0000 [#1]
Modules linked in: w83781d hwmon_vid hwmon analog joydev snd_pcm_oss
snd_mixer_oss snd_seq_midi snd_emu10k1_synth snd_emux_synth snd_seq_virmidi
snd_seq_midi_event snd_seq_midi_emul snd_seq nfs lockd nfs_acl sunrpc ipv6
button battery ac reiser4 loop cdc_ether usbnet tuner 8250_pnp 8250
serial_core snd_emu10k1 bttv snd_rawmidi snd_ac97_codec video_buf ac97_bus
firmware_class snd_pcm ir_common snd_seq_device snd_timer compat_ioctl32
i2c_algo_bit snd_page_alloc btcx_risc snd_util_mem tveeprom videodev
snd_hwdep v4l2_common emu10k1_gp i2c_piix4 snd v4l1_compat gameport soundcore
i2c_core uhci_hcd 8139too mii usbcore intel_agp agpgart parport_pc lp parport
reiserfs edd fan sr_mod cdrom sg ata_piix libata thermal processor sd_mod
scsi_mod
CPU: 0
EIP: 0060:[<dcfbac13>] Not tainted VLI
EFLAGS: 00210246 (2.6.21-mm1 #1)
EIP is at nfs_update_inode+0xd3/0x710 [nfs]
eax: 00000000 ebx: 000081a4 ecx: cb020584 edx: 00008000
esi: 00000a6b edi: c6389e60 ebp: c22128b0 esp: cbfa1dd8
ds: 007b es: 007b fs: 0000 gs: 0033 ss: 0068
Process umount (pid: 26110, ti=cbfa0000 task=d0ce40f0 task.ti=cbfa0000)
Stack: cb020608 cb0205ec cb020584 00200246 00000000 00000002 00000000 dcfbc74c
cb020584 cb020400 c22128b0 002b9834 00000000 00000002 dcfbc74c cb020584
c22128b0 cb0205ec cb020584 dcfbc75a c2212800 00000000 c3403b20 dcfcbb9d
Call Trace:
[<dcfbc74c>] nfs_post_op_update_inode+0x1c/0x50 [nfs]
[<dcfbc74c>] nfs_post_op_update_inode+0x1c/0x50 [nfs]
[<dcfbc75a>] nfs_post_op_update_inode+0x2a/0x50 [nfs]
[<dcfcbb9d>] nfs4_proc_delegreturn+0x16d/0x170 [nfs]
[<dcfd73e8>] nfs_do_return_delegation+0x18/0x30 [nfs]
[<dcfb9319>] nfs_dentry_iput+0x29/0x70 [nfs]
[<c0186882>] shrink_dcache_for_umount_subtree+0x82/0x220
[<c0187a89>] shrink_dcache_for_umount+0x39/0x50
[<c0176ad8>] generic_shutdown_super+0x18/0xf0
[<c0176cb8>] deactivate_super+0x78/0xa0
[<c0176bec>] kill_anon_super+0xc/0x40
[<dcfbd28f>] nfs_kill_super+0xf/0x20 [nfs]
[<c0176cbd>] deactivate_super+0x7d/0xa0
[<c018c1a0>] sys_umount+0x50/0x290
[<c0132fb7>] up_read+0x17/0x30
[<c0104084>] restore_nocheck+0x12/0x15
[<c013a825>] trace_hardirqs_on+0xc5/0x170
[<c018c3f5>] sys_oldumount+0x15/0x20
[<c010403c>] syscall_call+0x7/0xb
=======================
Code: e8 33 fd ff ff b8 8c ff ff ff 83 c4 3c 5b 5e 5f 5d c3 8d b6 00 00 00 00
8b 4c 24 20 8b 81 24 01 00 00 8b b8 9c 02 00 00 8b 40 38 <3b> 48 30 0f 84 6e
04 00 00 8b 54 24 24 8b 85 8c 00 00 00 89 82
EIP: [<dcfbac13>] nfs_update_inode+0xd3/0x710 [nfs] SS:ESP 0068:cbfa1dd8
Marc
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