Additional info:
libreport version: 2.0.18
abrt_version:   2.0.18
cmdline:        BOOT_IMAGE=/vmlinuz-3.6.10-2.fc17.i686 root=/dev/mapper/vg_alfonso-lv_root ro rd.lvm.lv=vg_alfonso/lv_root rd.md=0 rd.dm=0 SYSFONT=True KEYTABLE=us rd.luks=0 rd.lvm.lv=vg_alfonso/lv_swap LANG=en_US.UTF-8 rhgb quiet
kernel:         3.6.10-2.fc17.i686

backtrace:
:WARNING: at drivers/gpu/drm/i915/i915_gem.c:3245 i915_gem_object_pin+0x14a/0x1a0 [i915]()
:Hardware name: 20040M18        
:Modules linked in: rfcomm btusb fuse bnep bluetooth ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack uvcvideo hid_multitouch videobuf2_vmalloc videobuf2_memops videobuf2_core videodev media coretemp usblp microcode arc4 ath9k iTCO_wdt iTCO_vendor_support ath9k_common ath9k_hw ath mac80211 e100 mii lpc_ich ideapad_laptop i2c_i801 cfg80211 sparse_keymap serio_raw snd_hda_codec_conexant snd_hda_intel snd_hda_codec snd_hwdep snd_seq snd_seq_device snd_pcm rfkill snd_page_alloc snd_timer snd soundcore uinput binfmt_misc wmi i915 video i2c_algo_bit drm_kms_helper drm i2c_core
:Pid: 3681, comm: tremulous Not tainted 3.6.10-2.fc17.i686 #1
:Call Trace:
: [<c043c652>] warn_slowpath_common+0x72/0xa0
: [<f8294bfa>] ? i915_gem_object_pin+0x14a/0x1a0 [i915]
: [<f8294bfa>] ? i915_gem_object_pin+0x14a/0x1a0 [i915]
: [<c043c6a2>] warn_slowpath_null+0x22/0x30
: [<f8294bfa>] i915_gem_object_pin+0x14a/0x1a0 [i915]
: [<c044b759>] ? del_timer_sync+0x29/0x50
: [<f829374a>] ? i915_gem_object_get_fence+0x12a/0x190 [i915]
: [<f829821b>] pin_and_fence_object.isra.3+0x9b/0x150 [i915]
: [<f8298484>] i915_gem_execbuffer_reserve.isra.4+0x184/0x3d0 [i915]
: [<f8298aaf>] ? i915_gem_do_execbuffer.isra.9+0x38f/0xfa0 [i915]
: [<f8298c53>] i915_gem_do_execbuffer.isra.9+0x533/0xfa0 [i915]
: [<c043413f>] ? iounmap_atomic+0x7f/0xd0
: [<c0674291>] ? _copy_from_user+0x41/0x60
: [<f8299c42>] i915_gem_execbuffer2+0x62/0x240 [i915]
: [<f8299be0>] ? i915_gem_execbuffer+0x520/0x520 [i915]
: [<f81c4bf2>] drm_ioctl+0x422/0x480 [drm]
: [<f8299be0>] ? i915_gem_execbuffer+0x520/0x520 [i915]
: [<c066f978>] ? timerqueue_add+0x58/0xb0
: [<c048754e>] ? ktime_get+0x5e/0x100
: [<f81c47d0>] ? drm_copy_field+0x80/0x80 [drm]
: [<c05538ca>] do_vfs_ioctl+0x7a/0x590
: [<c061962a>] ? inode_has_perm.isra.31.constprop.62+0x3a/0x50
: [<c061ac70>] ? file_has_perm+0xa0/0xb0
: [<c061b008>] ? selinux_file_ioctl+0x48/0xe0
: [<c0553e48>] sys_ioctl+0x68/0x80
: [<c095c09f>] sysenter_do_call+0x12/0x28
: [<c0950000>] ? context_read_and_validate+0xf/0x11a

Potential duplicate bug: 892312