Additional info:
libreport version: 2.0.18
abrt_version:   2.0.18
cmdline:        BOOT_IMAGE=/vmlinuz-3.6.9-2.fc17.i686.PAE root=/dev/mapper/vg-lv_root ro rd.md=0 rd.dm=0 KEYTABLE=us SYSFONT=True rd.lvm.lv=vg/lv_root rd.luks=0 rd.lvm.lv=vg/lv_swap LANG=en_US.UTF-8 rhgb quiet
kernel:         3.6.9-2.fc17.i686.PAE

backtrace:
:WARNING: at fs/dcache.c:2630 prepend_path+0x1c4/0x1d0()
:Hardware name: 2007WAW
:Root dentry has weird name <>  vfsmnt: fs:nfs4
:Modules linked in: fuse nfsv4 auth_rpcgss nfs dns_resolver fscache lockd sunrpc bnep bluetooth nf_conntrack_netbios_ns nf_conntrack_broadcast ip6t_REJECT nf_conntrack_ipv4 nf_defrag_ipv4 nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables arc4 iTCO_wdt iTCO_vendor_support coretemp kvm microcode snd_hda_codec_analog snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm i2c_i801 lpc_ich mfd_core ath5k ath mac80211 cfg80211 e1000e snd_page_alloc snd_timer thinkpad_acpi snd soundcore nsc_ircc rfkill irda crc_ccitt uinput yenta_socket video radeon i2c_algo_bit drm_kms_helper ttm drm i2c_core
:Pid: 19652, comm: mount Not tainted 3.6.9-2.fc17.i686.PAE #1
:Call Trace:
: [<c044bbf2>] warn_slowpath_common+0x72/0xa0
: [<c05680b4>] ? prepend_path+0x1c4/0x1d0
: [<c05680b4>] ? prepend_path+0x1c4/0x1d0
: [<c044bcc3>] warn_slowpath_fmt+0x33/0x40
: [<c05680b4>] prepend_path+0x1c4/0x1d0
: [<c056ad40>] sys_getcwd+0xc0/0x170
: [<c097aadf>] sysenter_do_call+0x12/0x28