Extracting the crash:
...
<6>[ 4755.305373] ata1.00: configured for UDMA/133
<1>[ 4755.596535] BUG: unable to handle kernel NULL pointer dereference at           (null)
<1>[ 4755.596558] IP: [<ffffffff94472cc1>] 0xffffffff94472cc0
<5>[ 4755.596576] PGD 0 
<5>[ 4755.596587] Oops: 0000 [#1] SMP 
<0>[ 4755.598893] gsmi: Log Shutdown Reason 0x03
<5>[ 4755.598904] Modules linked in: i2c_dev uinput rfcomm snd_hda_codec_realtek smsc75xx memconsole snd_hda_codec_hdmi zram(C) snd_hda_intel zsmalloc(C) snd_hda_codec snd_hwdep snd_pcm snd_page_alloc fuse nf_conntrack_ipv6 nf_defrag_ipv6 ip6table_filter ip6_tables ath9k_btcoex ath9k_common_btcoex ath9k_hw_btcoex ath smsc95xx mac80211 usbnet ath3k cfg80211 btusb btrtl btbcm btintel bluetooth uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core joydev snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq snd_seq_device snd_timer ppp_async ppp_generic slhc tun
<5>[ 4755.599096] CPU 0 
<5>[ 4755.599105] Pid: 15271, comm: kworker/u:8 Tainted: G        WC   3.8.11 #1
<5>[ 4755.599121] RIP: 0010:[<ffffffff94472cc1>]  [<ffffffff94472cc1>] 0xffffffff94472cc0
<5>[ 4755.599141] RSP: 0018:ffff88016b4bbb80  EFLAGS: 00010246
<5>[ 4755.599153] RAX: ffff880177598000 RBX: 0000000000000000 RCX: 0000000000000040
<5>[ 4755.599167] RDX: 0000000000000000 RSI: ffff8801775a25c0 RDI: ffff880178299e00
<5>[ 4755.599180] RBP: ffff88016b4bbc28 R08: 0000000000000000 R09: ffff88016b4bbbd8
<5>[ 4755.599193] R10: 0000000000000020 R11: 0000000000000000 R12: 0000000000000000
<5>[ 4755.599206] R13: ffff880177598000 R14: ffff880178147038 R15: ffff880178299e00
<5>[ 4755.599220] FS:  0000000000000000(0000) GS:ffff88017ca00000(0000) knlGS:0000000000000000
<5>[ 4755.599235] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
<5>[ 4755.599247] CR2: 0000000000000000 CR3: 000000001440c000 CR4: 00000000000407f0
<5>[ 4755.599260] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
<5>[ 4755.599273] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
<5>[ 4755.599287] Process kworker/u:8 (pid: 15271, threadinfo ffff88016b4ba000, task ffff88015abce180)
<5>[ 4755.599302] Stack:
<5>[ 4755.599308]  ffffffff93ee4869 0000000093ec3bd8 0000000000000000 0000000000000000
<5>[ 4755.599331]  ffff880178147000 0000000000000000 ffff88016b79be00 0000000000000000
<5>[ 4755.599353]  ffff8801759b9c00 0000000000000000 0000000000000000 0000000000000000
<5>[ 4755.599375] Call Trace:
<5>[ 4755.599391]  [<ffffffff93ee4869>] ? intel_update_plane+0x572/0x66b
<5>[ 4755.599408]  [<ffffffff93ee537c>] intel_plane_restore+0x57/0x5d
<5>[ 4755.599426]  [<ffffffff93ec6973>] intel_modeset_setup_hw_state+0x35a/0x493
<5>[ 4755.599444]  [<ffffffff93e9b471>] __i915_drm_thaw+0x13f/0x1b1
<5>[ 4755.599459]  [<ffffffff93e9b974>] i915_resume+0x8c/0xa5
<5>[ 4755.599472]  [<ffffffff93e9b9a3>] i915_pm_resume+0x16/0x18
<5>[ 4755.599490]  [<ffffffff93e08e63>] pci_pm_resume+0xc4/0xeb
<5>[ 4755.599505]  [<ffffffff93e08d9f>] ? pci_pm_prepare+0x40/0x40
<5>[ 4755.599522]  [<ffffffff93ef9315>] dpm_run_callback.isra.3+0x2e/0x83
<5>[ 4755.599538]  [<ffffffff93ef9475>] device_resume+0x10b/0x14d
<5>[ 4755.599553]  [<ffffffff93ef94d4>] async_resume+0x1d/0x43
<5>[ 4755.599569]  [<ffffffff93c57b78>] async_run_entry_fn+0xc1/0x1a3
<5>[ 4755.599586]  [<ffffffff93c4b148>] process_one_work+0x18a/0x2af
<5>[ 4755.599603]  [<ffffffff93c4d397>] worker_thread+0x135/0x1fb
<5>[ 4755.599618]  [<ffffffff93c4d262>] ? flush_delayed_work+0x3e/0x3e
<5>[ 4755.599633]  [<ffffffff93c50f65>] kthread+0xc0/0xc8
<5>[ 4755.599647]  [<ffffffff93c50ea5>] ? __kthread_parkme+0x6b/0x6b
<5>[ 4755.599664]  [<ffffffff940ca71c>] ret_from_fork+0x7c/0xb0
<5>[ 4755.599677]  [<ffffffff93c50ea5>] ? __kthread_parkme+0x6b/0x6b
<5>[ 4755.599689] Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 99 <d7> 33 94 ff ff ff ff 50 0d 24 94 ff ff ff ff 01 00 00 00 00 00 
<1>[ 4755.599882] RIP  [<ffffffff94472cc1>] 0xffffffff94472cc0
<5>[ 4755.599898]  RSP <ffff88016b4bbb80>
<5>[ 4755.599906] CR2: 0000000000000000
<4>[ 4755.599933] ---[ end trace 9627262c22cb7a13 ]---
<0>[ 4755.603999] Kernel panic - not syncing: Fatal exception
<0>[ 4755.604029] Kernel Offset: 0x12c00000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
<0>[ 4755.604192] gsmi: Log Shutdown Reason 0x02
...

This looks a lot like https://bugs.chromium.org/p/chromium/issues/detail?id=597351 which has a similar trace on Peppy.

Stephane, should we merge these?

The stack traces are identical (and the crash is the same: NULL access at intel_update_plane+0x572/0x66b)