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kernel BUG at /build/buildd/linux-3.13.0/mm/slub.c:3365!
invalid opcode: 0000 [#3] SMP 
Modules linked in: ctr ccm zram(C) bnep rfcomm bluetooth arc4 snd_hda_codec_hdmi snd_hda_codec_idt iwldvm mac80211 snd_hda_intel hp_wmi sparse_keymap ppdev intel_powerclamp i915 coretemp joydev snd_hda_codec kvm_intel snd_hwdep snd_pcm kvm iwlwifi snd_page_alloc snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device drm_kms_helper cfg80211 mei_me snd_timer drm psmouse snd mei serio_raw hp_accel lis3lv02d lpc_ich input_polldev wmi i2c_algo_bit intel_ips tpm_infineon soundcore parport_pc mac_hid video lp parport btrfs xor raid6_pq libcrc32c hid_generic usbhid hid firewire_ohci ahci firewire_core sky2 libahci sdhci_pci sdhci crc_itu_t
CPU: 0 PID: 1082 Comm: Xorg Tainted: G      D  C   3.13.0-23-generic #45-Ubuntu
Hardware name: Hewlett-Packard HP ProBook 6540b/1722, BIOS 68CDD Ver. F.21 03/28/2012
task: f454e780 ti: f2566000 task.ti: f2566000
EIP: 0060:[<c1162a14>] EFLAGS: 00213246 CPU: 0
EIP is at kfree+0xf4/0x100
EAX: 40000000 EBX: f4320000 ECX: e13a0604 EDX: 40000000
ESI: f534c400 EDI: f923a8f1 EBP: f2567dc8 ESP: f2567dac
 DS: 007b ES: 007b FS: 00d8 GS: 00e0 SS: 0068
CR0: 80050033 CR2: 97176000 CR3: 2f857000 CR4: 000007f0
Stack:
 f454e780 c1091220 f2567db4 f4320000 f4320000 e13a0604 f428cdf8 f2567dd8
 f923a8f1 00000000 f428cea0 f2567e00 f923b91e f428cea0 0000ce4d f4320000
 f432001c 0000ce4d 00000000 00000040 ec685f00 f2567e3c f92417e0 00000001
Call Trace:
 [<c1091220>] ? prepare_to_wait_event+0xd0/0xd0
 [<f923a8f1>] i915_gem_free_request+0x71/0x90 [i915]
 [<f923b91e>] i915_gem_retire_requests_ring+0x5e/0x110 [i915]
 [<f92417e0>] i915_gem_set_domain_ioctl+0x150/0x200 [i915]
 [<f9241690>] ? i915_gem_pwrite_ioctl+0x420/0x420 [i915]
 [<f9127792>] drm_ioctl+0x472/0x500 [drm]
 [<f9241690>] ? i915_gem_pwrite_ioctl+0x420/0x420 [i915]
 [<c11af9a7>] ? fsnotify+0x1f7/0x2d0
 [<c1177070>] ? do_readv_writev+0x140/0x230
 [<f9127320>] ? drm_free_buffer+0x30/0x30 [drm]
 [<c1186ea2>] do_vfs_ioctl+0x2e2/0x4d0
 [<c1059c30>] ? do_setitimer+0x200/0x270
 [<c10b1cb8>] ? ktime_get_ts+0x48/0x140
 [<c11870f0>] SyS_ioctl+0x60/0x80
 [<c165954d>] sysenter_do_call+0x12/0x28
Code: 68 64 4e 00 eb b7 f7 06 00 c0 00 00 74 1d 8b 06 31 d2 f6 c4 40 74 03 8b 56 38 89 f0 e8 b6 5c fc ff eb 9a 8b 70 1c e9 4b ff ff ff <0f> 0b 8d 76 00 8d bc 27 00 00 00 00 55 89 e5 57 56 53 83 ec 24
EIP: [<c1162a14>] kfree+0xf4/0x100 SS:ESP 0068:f2567dac
---[ end trace 511c0863639be1bb ]---