Chrome Version: R62.0.320297
Chrome OS Version: R62.0.320297
Chrome OS Platform: samus stable channel

Please specify Cr-* of the system to which this bug/feature applies (add
the label below).

Steps To Reproduce: 
(1) Attach D6000 docking station via USB-C connecter with power delivery
(2) Keep replugging device

Expected Result:
Devices (D6000 and samus Chromebook) working correctly. No kernel panics produce.

Actual Result:
At some point docking station is stop being recognized, following replugs are causing kernel panic. Type A connector doesn't provoke kernel panic. 
Bug is also present on dev channel.

How frequently does this problem reproduce? (Always, sometimes, hard to
reproduce?)
Always. It reproduce each time after several replugs.

What is the impact to the user, and is there a workaround? If so, what is
it?
User have to use USB Type A connection to bypass this issue.

Please provide any additional information below. Attach a screen shot or
log if possible.

Kernel Panic:
[ 1128.601502] usb 2-3.1: Failed to set U1 timeout to 0x0,error code -71
[ 1128.601525] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
[ 1128.601534] IP: [<ffffffff8ac0c490>] usb_enable_link_state+0x24/0x260
[ 1128.601545] PGD 0 
[ 1128.601549] Oops: 0000 [#1] PREEMPT SMP 
[ 1128.603851] gsmi: Log Shutdown Reason 0x03
[ 1128.603855] Modules linked in: xt_TCPMSS ip6table_mangle ip6table_raw uinput rfcomm evdi snd_soc_sst_bdw_rt5677_mach i2c_dev snd_soc_sst_haswell_pcm snd_soc_sst_dsp memc_x86 x86_pkg_temp_thermal cmac xt_nat acpi_als industrialio_triggered_buffer snd_hda_codec_hdmi snd_soc_sst_acpi snd_soc_rt5677 snd_soc_rl6231 snd_soc_rt5677_spi snd_hda_intel snd_hda_controller snd_hda_codec bridge stp llc zram ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat fuse xt_mark ip6table_filter iio_trig_sysfs snd_seq_midi snd_seq_midi_event cros_ec_accel kfifo_buf industrialio ip6_tables snd_seq cdc_mbim cdc_wdm cdc_ncm usbnet mii snd_usb_audio snd_usbmidi_lib snd_hwdep snd_rawmidi snd_seq_device btusb btbcm btintel bluetooth uvcvideo videobuf2_vmalloc iwlmvm iwlwifi iwl7000_mac80211 cfg80211 joydev
[ 1128.603966] CPU: 1 PID: 17065 Comm: DeviceManager_0 Tainted: G        W    3.14.0 #1
[ 1128.603972] Hardware name: GOOGLE Samus, BIOS Google_Samus.6300.174.0 04/02/2015
[ 1128.603979] task: ffff88045d04c900 ti: ffff8804511ba000 task.ti: ffff8804511ba000
[ 1128.603985] RIP: 0010:[<ffffffff8ac0c490>]  [<ffffffff8ac0c490>] usb_enable_link_state+0x24/0x260
[ 1128.603995] RSP: 0018:ffff8804511bbca8  EFLAGS: 00010246
[ 1128.604000] RAX: 0000000000000000 RBX: ffff88042d883000 RCX: 0000000000000000
[ 1128.604005] RDX: 0000000000000001 RSI: ffff88042d883000 RDI: ffff880466c95400
[ 1128.604011] RBP: ffff8804511bbd00 R08: 000000000001ffe8 R09: 0000000000000000
[ 1128.604016] R10: ffff8804511bbb48 R11: 0000000000000001 R12: ffff880466c95400
[ 1128.604022] R13: 0000000000000001 R14: ffff880466c95400 R15: 0000000000000000
[ 1128.604028] FS:  00007daed190b700(0000) GS:ffff88047ec80000(0000) knlGS:0000000000000000
[ 1128.604035] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1128.604040] CR2: 0000000000000010 CR3: 0000000433819000 CR4: 00000000003407e0
[ 1128.604045] Stack:
[ 1128.604047]  0000000000000000 00000000ffffffb9 ffffffff8ac157a9 ffff8804511bbb48
[ 1128.604056]  ffff8804511bbcf8 ffffffff8ac0bc60 ffff88042d883000 ffff880466c95400
[ 1128.604064]  0000000000000001 ffff880466c95400 0000000000000000 ffff8804511bbd20
[ 1128.604073] Call Trace:
[ 1128.604082]  [<ffffffff8ac157a9>] ? usb_control_msg+0xf5/0x11d
[ 1128.604090]  [<ffffffff8ac0bc60>] ? usb_set_lpm_timeout+0xd6/0xfa
[ 1128.604098]  [<ffffffff8ac0c73d>] usb_enable_lpm+0x71/0x86
[ 1128.604105]  [<ffffffff8ac0c81a>] usb_disable_lpm+0x89/0xae
[ 1128.604111]  [<ffffffff8ac0c871>] usb_unlocked_disable_lpm+0x32/0x48
[ 1128.604118]  [<ffffffff8ac0f3d0>] usb_reset_and_verify_device+0xba/0x536
[ 1128.604125]  [<ffffffff8ac0fc8f>] usb_reset_device+0x6c/0x16a
[ 1128.604132]  [<ffffffff8ac1e653>] usbdev_do_ioctl+0x406/0xd91
[ 1128.604141]  [<ffffffff8a8b5ba8>] ? do_futex+0xd8/0x7f1
[ 1128.604147]  [<ffffffff8ac1f000>] usbdev_ioctl+0xe/0x12
[ 1128.604155]  [<ffffffff8a9574e1>] do_vfs_ioctl+0x354/0x416
[ 1128.604161]  [<ffffffff8a9575fa>] SyS_ioctl+0x57/0x79
[ 1128.604168]  [<ffffffff8ae31a5c>] system_call_fastpath+0x20/0x25
[ 1128.604173] Code: 5b 41 5c 41 5d 5d c3 0f 1f 44 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 48 83 ec 30 48 8b 86 90 03 00 00 83 fa 01 41 0f 94 c3 <48> 8b 40 10 66 8b 48 08 75 0a 80 78 07 00 0f 84 19 02 00 00 83 
[ 1128.604240] RIP  [<ffffffff8ac0c490>] usb_enable_link_state+0x24/0x260
[ 1128.604250]  RSP <ffff8804511bbca8>
[ 1128.604253] CR2: 0000000000000010
[ 1128.604258] ---[ end trace 968639d5e43dce71 ]---
 

Deleted: console-ramoops 127 KB

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