Description of problem: This is a virtual machine running in Virtualbox 2.2, and the error occured when I tried to drag and drop a file from the host system to this OS. Additional info: libreport version: 2.0.14 abrt_version: 2.0.13 cmdline: BOOT_IMAGE=/vmlinuz-3.6.2-4.fc17.x86_64 root=/dev/mapper/vg_vbfedora17-lv_root ro rd.md=0 rd.dm=0 rd.lvm.lv=vg_vbfedora17/lv_root SYSFONT=True KEYTABLE=us rd.luks=0 LANG=en_US.UTF-8 rd.lvm.lv=vg_vbfedora17/lv_swap rhgb quiet kernel: 3.6.2-4.fc17.x86_64 kernel_tainted_long: Proprietary module has not been loaded. backtrace: :WARNING: at fs/dcache.c:1381 d_set_d_op+0x7c/0xb0() :Hardware name: VirtualBox :Modules linked in: fuse vboxvideo(O) drm vboxsf(O) lockd sunrpc ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter nf_conntrack_ipv4 nf_defrag_ipv4 ip6_tables xt_state nf_conntrack snd_intel8x0 snd_ac97_codec ac97_bus snd_seq ppdev snd_seq_device snd_pcm microcode vboxguest(O) snd_page_alloc snd_timer parport_pc parport i2c_piix4 i2c_core snd soundcore e1000 :Pid: 1112, comm: HGCM-NOTIFY Tainted: G O 3.6.2-4.fc17.x86_64 #1 :Call Trace: : [<ffffffff8105b81f>] warn_slowpath_common+0x7f/0xc0 : [<ffffffff8105b87a>] warn_slowpath_null+0x1a/0x20 : [<ffffffff811a383c>] d_set_d_op+0x7c/0xb0 : [<ffffffffa01b435b>] sf_instantiate.isra.1+0xcb/0x180 [vboxsf] : [<ffffffffa01b45e7>] sf_create_aux+0x1d7/0x250 [vboxsf] : [<ffffffffa01b4676>] sf_mkdir+0x16/0x20 [vboxsf] : [<ffffffff8119d576>] vfs_mkdir+0xa6/0x130 : [<ffffffff8119f0ba>] sys_mkdirat+0x4a/0x80 : [<ffffffff8119f109>] sys_mkdir+0x19/0x20 : [<ffffffff816227e9>] system_call_fastpath+0x16/0x1b
Vbox bug.