After mount -t cifs I tried to ls the mounted directory I got the error below. I had to reboot the system to stabilize the kernel.



Oct 30 19:47:18 localhost kernel: ------------[ cut here ]------------
Oct 30 19:47:18 localhost kernel: kernel BUG at fs/cifs/cifs_dfs_ref.c:305!
Oct 30 19:47:18 localhost kernel: invalid opcode: 0000 [#2] SMP 
Oct 30 19:47:18 localhost kernel: Modules linked in: nls_utf8 cifs bridge bnep rfcomm l2cap bluetooth fuse sunrpc ipt_REJECT nf_conntrack_ipv4 iptable_filter ip_tables nf_conntrack_ftp ip6t_REJECT xt_tcpudp nf_conntrack_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables x_tables cpufreq_ondemand acpi_cpufreq loop dm_multipath ipv6 snd_hda_intel snd_seq_dummy snd_seq_oss snd_seq_midi_event snd_seq snd_seq_device snd_pcm_oss snd_mixer_oss snd_pcm i915 e1000e snd_timer drm video i2c_algo_bit wmi button output tpm_infineon tpm snd_page_alloc snd_hwdep ppdev i2c_core snd soundcore pcspkr parport_pc tpm_bios parport sg floppy sr_mod cdrom dm_snapshot dm_zero dm_mirror dm_mod pata_acpi ata_piix ata_generic libata sd_mod scsi_mod ext3 jbd mbcache uhci_hcd ohci_hcd ehci_hcd [last unloaded: microcode]
Oct 30 19:47:18 localhost kernel: 
Oct 30 19:47:18 localhost kernel: Pid: 2661, comm: ls Tainted: G      D  (2.6.25-14.fc9.i686 #1)
Oct 30 19:47:18 localhost kernel: EIP: 0060:[<f8f46a27>] EFLAGS: 00010246 CPU: 0
Oct 30 19:47:18 localhost kernel: EIP is at cifs_dfs_follow_mountpoint+0x3b/0x6c7 [cifs]
Oct 30 19:47:18 localhost kernel: EAX: f77fda18 EBX: f77fda18 ECX: f8f5b9d0 EDX: ec3bbf58
Oct 30 19:47:18 localhost kernel: ESI: 00000000 EDI: ec3a2000 EBP: ec3bbe98 ESP: ec3bbe48
Oct 30 19:47:18 localhost kernel:  DS: 007b ES: 007b FS: 00d8 GS: 0033 SS: 0068
Oct 30 19:47:18 localhost kernel: Process ls (pid: 2661, ti=ec3bb000 task=ec244e90 task.ti=ec3bb000)
Oct 30 19:47:18 localhost kernel: Stack: ec3bbee0 ec3bbf58 c04928e0 ec276f00 00000000 ec3bbe70 c0488fba f77eb110 
Oct 30 19:47:18 localhost kernel:        f77e9e28 ec3a2000 ec3bbe98 c0489167 ec3bbee0 f7027e60 f7027e00 00000000 
Oct 30 19:47:18 localhost kernel:        00000000 f77fe024 00000000 ec3a2000 ec3bbef4 c048affa ec3bbf58 ec3a2004 
Oct 30 19:47:18 localhost kernel: Call Trace:
Oct 30 19:47:18 localhost kernel:  [dput+52/238] ? dput+0x34/0xee
Oct 30 19:47:18 localhost kernel:  [__follow_mount+33/100] ? __follow_mount+0x21/0x64
Oct 30 19:47:18 localhost kernel:  [do_lookup+79/320] ? do_lookup+0x4f/0x140
Oct 30 19:47:18 localhost kernel:  [__link_path_walk+2502/3324] ? __link_path_walk+0x9c6/0xcfc
Oct 30 19:47:18 localhost kernel:  [mntput_no_expire+22/105] ? mntput_no_expire+0x16/0x69
Oct 30 19:47:18 localhost kernel:  [path_walk+76/155] ? path_walk+0x4c/0x9b
Oct 30 19:47:18 localhost kernel:  [do_path_lookup+391/464] ? do_path_lookup+0x187/0x1d0
Oct 30 19:47:18 localhost kernel:  [getname+100/183] ? getname+0x64/0xb7
Oct 30 19:47:18 localhost kernel:  [__user_walk_fd+47/67] ? __user_walk_fd+0x2f/0x43
Oct 30 19:47:18 localhost kernel:  [sys_getxattr+30/73] ? sys_getxattr+0x1e/0x49
Oct 30 19:47:18 localhost kernel:  [do_syscall_trace+294/365] ? do_syscall_trace+0x126/0x16d
Oct 30 19:47:18 localhost kernel:  [syscall_call+7/11] ? syscall_call+0x7/0xb
Oct 30 19:47:18 localhost kernel:  =======================
Oct 30 19:47:18 localhost kernel: Code: f8 01 89 55 b4 c7 45 f0 00 00 00 00 c7 45 ec 00 00 00 00 74 11 68 40 9e f4 f8 68 68 5b f5 f8 e8 a6 8a 6e c7 59 5e 3b 5b 18 75 04 <0f> 0b eb fe e8 d1 7d ff ff f6 05 00 cc f5 f8 01 89 45 b8 74 21 
Oct 30 19:47:18 localhost kernel: EIP: [<f8f46a27>] cifs_dfs_follow_mountpoint+0x3b/0x6c7 [cifs] SS:ESP 0068:ec3bbe48
Oct 30 19:47:18 localhost kernel: ---[ end trace ba370afe91ba3af6 ]---