[Pkg-samba-maint] Bug#499812: smbfs: Application crashed when i try to see dfs links

[Mikhail Zhukov]

Package: smbfs
Version: 2:3.2.3-1
Severity: normal

When i try to see any folders in Dfs root from Server 2003 SP2 RC2 mounted
with such line in  /etc/fstab:

\\domain\dfsroot /mnt/dfs cifs
user,rw,file_mode=0666,dir_mode=0777,domain=do
main,nosetuids,credentials=/etc/smbpasswd,iocharset=utf8,codepage=cp866 0 0

any program (nautilus, bash, mc, zsh etc) crash with segfault. dmesg contain
this messages:

[31184.095643] BUG: unable to handle kernel NULL pointer dereference at
00000   004
[31184.095643] IP: [<c01b8921>] call_sbin_request_key+0x130/0x221
[31184.095643] *pde = 00000000
[31184.095643] Oops: 0000 [#8] SMP
[31184.095643] Modules linked in: nls_cp437 vfat fat i915 drm binfmt_misc
rfc   omm l2cap bluetooth vboxdrv ppdev parport_pc lp parport video output
ac batte   ry ipv6 nls_utf8 cifs nls_base fuse dm_snapshot dm_mirror dm_log
dm_mod loop    psmouse serio_raw i2c_i801 snd_pcsp i2c_core rng_core
iTCO_wdt atl2 snd_hda_i   ntel snd_pcm_oss snd_mixer_oss snd_pcm snd_timer
snd soundcore intel_agp butt   on snd_page_alloc agpgart evdev ext3 jbd
mbcache ide_cd_mod cdrom sd_mod piix    ide_pci_generic ide_core ata_piix
usb_storage ata_generic libata scsi_mod do   ck uhci_hcd ehci_hcd usbcore
thermal processor fan thermal_sys
[31184.095643]
[31184.095643] Pid: 8601, comm: mc Tainted: G      D   (2.6.26-1-686 #1)
[31184.095643] EIP: 0060:[<c01b8921>] EFLAGS: 00290246 CPU: 1
[31184.095643] EIP is at call_sbin_request_key+0x130/0x221
[31184.095643] EAX: 00000000 EBX: 00000000 ECX: ef571d24 EDX: ef571d24
[31184.095643] ESI: f56e74e0 EDI: ef571d40 EBP: ecec4140 ESP: ef571d28
[31184.095643]  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
[31184.095643] Process mc (pid: 8601, ti=ef570000 task=f56e74e0
task.ti=ef570000)
[31184.095643] Stack: c031ba4e ef525220 ecec4240 ecec0030 ecec4b48 ecec4a48
c   01d0030 c040f788
[31184.095643]        ecec4a48 ecec41c0 00000000 ecec41c0 c01b5d20 000003e8
e   f571dac c0356d20
[31184.095643]        00000002 00000009 0000001d ef571dac f8c4ea24 7165725f
3   035342e 38303433
[31184.095643] Call Trace:
[31184.095643]  [<c01d0030>] elv_merge+0x49/0x15b
[31184.095643]  [<c01b5d20>] key_alloc+0x1fb/0x2ca
[31184.095643]  [<c01b0039>] debugfs_create_symlink+0x36/0x43
[31184.095643]  [<c01b87f1>] call_sbin_request_key+0x0/0x221
[31184.095643]  [<c01b86e2>] request_key_and_link+0x1f6/0x246
[31184.095643]  [<c01b8a3a>] request_key+0x28/0x52
[31184.095643]  [<f8c3f678>] dns_resolve_server_name_to_ip+0x20a/0x23a
[cifs]
[31184.095643]  [<f8c3f9dd>] cifs_dfs_follow_mountpoint+0x2e3/0x66e [cifs]
[31184.095643]  [<c018760a>] mnt_want_write+0x21/0x57
[31184.095643]  [<c017c064>] __link_path_walk+0x84f/0xb0d
[31184.095643]  [<c011a5dc>] __wake_up+0x29/0x39
[31184.095643]  [<c017c359>] path_walk+0x37/0x70
[31184.095643]  [<c017c608>] do_path_lookup+0x122/0x184
[31184.095643]  [<c017ce65>] __user_walk_fd+0x29/0x3a
[31184.095643]  [<c017cfa6>] __user_walk+0xf/0x11
[31184.095643]  [<c01738b1>] sys_chdir+0x15/0x4f
[31184.095643]  [<c017e1fc>] vfs_ioctl+0x1c/0x5d
[31184.095643]  [<c017e487>] do_vfs_ioctl+0x24a/0x261
[31184.095643]  [<c017e4df>] sys_ioctl+0x41/0x5a
[31184.095643]  [<c0103853>] sysenter_past_esp+0x78/0xb1
[31184.095643]  =======================
[31184.095643] Code: 31 c0 57 e8 14 86 02 00 8b 86 e4 02 00 00 83 c4 0c 83
b8    a0 01 00 00 00 74 08 8b 80 a0 01 00 00 eb 09 8b 86 1c 02 00 00 8b 40
24 <8b>    40 04 8d 5c 24 24 50 68 3c a5 31 c0 53 e8 de 85 02 00 8b 44
[31184.095643] EIP: [<c01b8921>] call_sbin_request_key+0x130/0x221 SS:ESP
006   8:ef571d28
[31184.112074] ---[ end trace 9e50357e5eb6307c ]---

-- System Information:
Debian Release: lenny/sid
Architecture: i386 (i686)

Kernel: Linux 2.6.26-1-686 (SMP w/2 CPU cores)
Locale: LANG=ru_RU.UTF-8, LC_CTYPE=ru_RU.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages smbfs depends on:
ii  libc6                2.7-13              GNU C Library: Shared libraries
ii  libcomerr2           1.41.0-3            common error description
library
ii  libkeyutils1         1.2-9               Linux Key Management Utilities
(li
ii  libkrb53             1.6.dfsg.4~beta1-4  MIT Kerberos runtime libraries
ii  libldap-2.4-2        2.4.10-3            OpenLDAP libraries
ii  libpopt0             1.14-4              lib for parsing cmdline
parameters
ii  libtalloc1           1.2.0~git20080616-1 hierarchical pool based memory
all
ii  libwbclient0         2:3.2.3-1           client library for interfacing
wit
ii  netbase              4.33                Basic TCP/IP networking system
ii  samba-common         2:3.2.3-1           Samba common files used by both
th

smbfs recommends no packages.

Versions of packages smbfs suggests:
ii  smbclient                     2:3.2.3-1  a LanManager-like simple client
fo

-- no debconf information
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