Chrome Version: 58.0.3029.51 beta
OS: Chrome OS 9334.33.0 (Official build)

What steps will reproduce the problem?
(1) Connect to another monitor via type C port
(2) Start an Android App, like Play Store.
(3) In settings, make the external monitor the primary one.  Make sure these settings are open on the laptop screen, not the external one.
(4) Screen might start blinking ( bug #709105 ).  Ignore it.
(5) In settings (which is on the non-blinking, internal screen), change the resolution
(6) If IOMMU errors aren't spewed, repeat step #5

What is the expected result? No problem

What happens instead? IOMMU Errors

---

Errors look like this:

[ 5934.405931] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98e400 of type read
[ 5934.413504] rk_iommu ff903f00.iommu: iova = 0x000000000c98e400: dte_index: 0x32 pte_index: 0x18e page_offset: 0x400
[ 5934.423927] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.441200] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98e800 of type read
[ 5934.448767] rk_iommu ff903f00.iommu: iova = 0x000000000c98e800: dte_index: 0x32 pte_index: 0x18e page_offset: 0x800
[ 5934.459207] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.476430] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98e800 of type read
[ 5934.484001] rk_iommu ff903f00.iommu: iova = 0x000000000c98e800: dte_index: 0x32 pte_index: 0x18e page_offset: 0x800
[ 5934.494426] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.511555] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98e400 of type read
[ 5934.519136] rk_iommu ff903f00.iommu: iova = 0x000000000c98e400: dte_index: 0x32 pte_index: 0x18e page_offset: 0x400
[ 5934.529586] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.546743] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98ec00 of type read
[ 5934.554323] rk_iommu ff903f00.iommu: iova = 0x000000000c98ec00: dte_index: 0x32 pte_index: 0x18e page_offset: 0xc00
[ 5934.564753] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.581909] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98f000 of type read
[ 5934.589480] rk_iommu ff903f00.iommu: iova = 0x000000000c98f000: dte_index: 0x32 pte_index: 0x18f page_offset: 0x0
[ 5934.599752] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab63c: 0x603fa006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.616942] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98e400 of type read
[ 5934.624531] rk_iommu ff903f00.iommu: iova = 0x000000000c98e400: dte_index: 0x32 pte_index: 0x18e page_offset: 0x400
[ 5934.634978] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.652118] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98f000 of type read
[ 5934.659686] rk_iommu ff903f00.iommu: iova = 0x000000000c98f000: dte_index: 0x32 pte_index: 0x18f page_offset: 0x0
[ 5934.669936] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab63c: 0x603fa006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.687071] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98ec00 of type read
[ 5934.694641] rk_iommu ff903f00.iommu: iova = 0x000000000c98ec00: dte_index: 0x32 pte_index: 0x18e page_offset: 0xc00
[ 5934.705082] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.722275] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98e400 of type read
[ 5934.729862] rk_iommu ff903f00.iommu: iova = 0x000000000c98e400: dte_index: 0x32 pte_index: 0x18e page_offset: 0x400
[ 5934.740312] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.757463] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98ec00 of type read
[ 5934.765047] rk_iommu ff903f00.iommu: iova = 0x000000000c98ec00: dte_index: 0x32 pte_index: 0x18e page_offset: 0xc00
[ 5934.775479] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.792621] rk_iommu ff903f00.iommu: Page fault at 0x000000000c655dc0 of type read
[ 5934.800189] rk_iommu ff903f00.iommu: iova = 0x000000000c655dc0: dte_index: 0x31 pte_index: 0x255 page_offset: 0xdc0
[ 5934.810616] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c4: 0xae599001 valid: 1 pte@0x00000000ae599954: 0x5a014006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.827757] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98ec00 of type read
[ 5934.835324] rk_iommu ff903f00.iommu: iova = 0x000000000c98ec00: dte_index: 0x32 pte_index: 0x18e page_offset: 0xc00
[ 5934.845752] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.862906] rk_iommu ff903f00.iommu: Page fault at 0x000000000c655dc0 of type read
[ 5934.870477] rk_iommu ff903f00.iommu: iova = 0x000000000c655dc0: dte_index: 0x31 pte_index: 0x255 page_offset: 0xdc0
[ 5934.880904] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c4: 0xae599001 valid: 1 pte@0x00000000ae599954: 0x5a014006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.898040] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98e800 of type read
[ 5934.905607] rk_iommu ff903f00.iommu: iova = 0x000000000c98e800: dte_index: 0x32 pte_index: 0x18e page_offset: 0x800
[ 5934.916050] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.933248] rk_iommu ff903f00.iommu: Page fault at 0x000000000c655dc0 of type read
[ 5934.940835] rk_iommu ff903f00.iommu: iova = 0x000000000c655dc0: dte_index: 0x31 pte_index: 0x255 page_offset: 0xdc0
[ 5934.951272] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c4: 0xae599001 valid: 1 pte@0x00000000ae599954: 0x5a014006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5934.968416] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98e800 of type read
[ 5934.975983] rk_iommu ff903f00.iommu: iova = 0x000000000c98e800: dte_index: 0x32 pte_index: 0x18e page_offset: 0x800
[ 5934.986406] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.003532] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98f000 of type read
[ 5935.011101] rk_iommu ff903f00.iommu: iova = 0x000000000c98f000: dte_index: 0x32 pte_index: 0x18f page_offset: 0x0
[ 5935.021371] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab63c: 0x603fa006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.038577] rk_iommu ff903f00.iommu: Page fault at 0x000000000c655dc0 of type read
[ 5935.046167] rk_iommu ff903f00.iommu: iova = 0x000000000c655dc0: dte_index: 0x31 pte_index: 0x255 page_offset: 0xdc0
[ 5935.056603] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c4: 0xae599001 valid: 1 pte@0x00000000ae599954: 0x5a014006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.073746] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98f000 of type read
[ 5935.081315] rk_iommu ff903f00.iommu: iova = 0x000000000c98f000: dte_index: 0x32 pte_index: 0x18f page_offset: 0x0
[ 5935.091571] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab63c: 0x603fa006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.108730] rk_iommu ff903f00.iommu: Page fault at 0x000000000c655dc0 of type read
[ 5935.116318] rk_iommu ff903f00.iommu: iova = 0x000000000c655dc0: dte_index: 0x31 pte_index: 0x255 page_offset: 0xdc0
[ 5935.126767] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c4: 0xae599001 valid: 1 pte@0x00000000ae599954: 0x5a014006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.143972] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98f000 of type read
[ 5935.151549] rk_iommu ff903f00.iommu: iova = 0x000000000c98f000: dte_index: 0x32 pte_index: 0x18f page_offset: 0x0
[ 5935.161807] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab63c: 0x603fa006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.178946] rk_iommu ff903f00.iommu: Page fault at 0x000000000c655dc0 of type read
[ 5935.186514] rk_iommu ff903f00.iommu: iova = 0x000000000c655dc0: dte_index: 0x31 pte_index: 0x255 page_offset: 0xdc0
[ 5935.196938] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c4: 0xae599001 valid: 1 pte@0x00000000ae599954: 0x5a014006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.214059] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98f000 of type read
[ 5935.221640] rk_iommu ff903f00.iommu: iova = 0x000000000c98f000: dte_index: 0x32 pte_index: 0x18f page_offset: 0x0
[ 5935.231916] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab63c: 0x603fa006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.249070] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98e400 of type read
[ 5935.256649] rk_iommu ff903f00.iommu: iova = 0x000000000c98e400: dte_index: 0x32 pte_index: 0x18e page_offset: 0x400
[ 5935.267080] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.284245] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98f000 of type read
[ 5935.291827] rk_iommu ff903f00.iommu: iova = 0x000000000c98f000: dte_index: 0x32 pte_index: 0x18f page_offset: 0x0
[ 5935.302103] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab63c: 0x603fa006 valid: 0 page@0x0000000000000000 flags: 0x0
[ 5935.319304] rk_iommu ff903f00.iommu: Page fault at 0x000000000c98ec00 of type read
[ 5935.326901] rk_iommu ff903f00.iommu: iova = 0x000000000c98ec00: dte_index: 0x32 pte_index: 0x18e page_offset: 0xc00
[ 5935.337350] rk_iommu ff903f00.iommu: mmu_dte_addr: 0x00000000ec510000 dte@0x00000000ec5100c8: 0xc8aab001 valid: 1 pte@0x00000000c8aab638: 0x603f9006 valid: 0 page@0x0000000000000000 flags: 0x0

---

If I go ahead and change the resolution again after seeing those errors:

[ 5937.902670] rk_iommu ff903f00.iommu: Enable stall request timed out, status: 0x00020b
[ 5937.912683] rk_iommu ff903f00.iommu: Disable paging request timed out, status: 0x00020b
[ 5937.922514] rk_iommu ff903f00.iommu: Enable stall request timed out, status: 0x00020b
[ 5937.932952] ------------[ cut here ]------------
[ 5937.937577] WARNING: at /mnt/host/source/src/third_party/kernel/v4.4/drivers/iommu/iommu.c:1260
[ 5937.946263] Modules linked in: ip6t_REJECT nf_reject_ipv6 ip6table_mangle xt_TCPMSS veth rfcomm btusb btrtl btbcm btintel uinput uvcvideo videobuf2_vmalloc mwifiex_pcie mwifiex bluetooth ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat xt_mark bridge fuse stp llc zram cfg80211 ip6table_filter smsc95xx usbnet mii joydev
[ 5937.976702] 
[ 5937.978201] CPU: 5 PID: 1906 Comm: DrmThread Not tainted 4.4.52 #60
[ 5937.984461] Hardware name: Google Kevin (DT)
[ 5937.988728] task: ffffffc0dcf5c600 ti: ffffffc0dcfe8000 task.ti: ffffffc0dcfe8000
[ 5937.996217] PC is at __iommu_detach_group+0x60/0x7c
[ 5938.001092] LR is at __iommu_detach_group+0x5c/0x7c
[ 5938.005964] pc : [<ffffffc00058047c>] lr : [<ffffffc000580478>] pstate: 20000145
[ 5938.013348] sp : ffffffc0dcfeb990
[ 5938.016659] x29: ffffffc0dcfeb990 x28: ffffffc0eb81b4a8 
[ 5938.021992] x27: ffffffc0010f52c8 x26: ffffffc000bf4000 
[ 5938.027324] x25: ffffffc000a538f0 x24: 0000000000000004 
[ 5938.032656] x23: 0000000000000001 x22: 0000000000000278 
[ 5938.037988] x21: ffffffc0ed930e58 x20: ffffffc0eb947a00 
[ 5938.043319] x19: ffffffc0ed930e00 x18: 0000000000000000 
[ 5938.048650] x17: 0000000000000000 x16: ffffffc0003ab0ec 
[ 5938.053981] x15: 0000000000000000 x14: 000000000000000c 
[ 5938.059312] x13: aaaaaaaaaaaaaaab x12: 0000000000000004 
[ 5938.064643] x11: 0000000000000005 x10: 00000000000008e0 
[ 5938.069974] x9 : ffffffc0dcfeb470 x8 : ffffffc0dcf5cf40 
[ 5938.075312] x7 : ffffffc0cfb17c78 x6 : 00000000002c473c 
[ 5938.080647] x5 : 0000002134fb17e5 x4 : ffffffc0002eda44 
[ 5938.085983] x3 : ffffffc0dcf5c600 x2 : 0000000000000000 
[ 5938.091314] x1 : 0000000000000000 x0 : 00000000ffffff92 
[ 5938.096645] 
[ 5938.096645] PC: 0xffffffc0005803fc:
[ 5938.101604] 03fc  b5ffff60 17fffff3 f9400020 36080040 940efabd a94153f3 a8c27bfd d65f03c0
[ 5938.109911] 041c  a9be7bfd 910003fd a90153f3 aa0103f3 aa0003f4 aa1e03e0 d503201f f9408261
[ 5938.118235] 043c  b5000101 90000002 aa1303e0 aa1403e1 912b8042 97fffc95 f900867f 1400000d
[ 5938.126558] 045c  f9408660 eb01001f 54000140 90000002 aa1303e0 91049042 97fffc8c 34000060
[ 5938.134881] 047c  d4210000 14000003 f9408260 f9008660 a94153f3 a8c27bfd d65f03c0 a9bd7bfd
[ 5938.143210] 049c  910003fd a90153f3 aa0003f4 aa1e03e0 f90017a1 d503201f f94017a1 91016033
[ 5938.151533] 04bc  aa1303e0 940f01ea f94017a1 aa1403e0 97ffffd4 aa1303e0 940f014f a94153f3
[ 5938.159851] 04dc  a8c37bfd d65f03c0 a9bd7bfd 910003fd f9000bf3 aa0003f3 aa1e03e0 f90013a1
[ 5938.168179] 
[ 5938.168179] LR: 0xffffffc0005803f8:
[ 5938.173141] 03f8  f8418e60 b5ffff60 17fffff3 f9400020 36080040 940efabd a94153f3 a8c27bfd
[ 5938.181462] 0418  d65f03c0 a9be7bfd 910003fd a90153f3 aa0103f3 aa0003f4 aa1e03e0 d503201f
[ 5938.189787] 0438  f9408261 b5000101 90000002 aa1303e0 aa1403e1 912b8042 97fffc95 f900867f
[ 5938.198110] 0458  1400000d f9408660 eb01001f 54000140 90000002 aa1303e0 91049042 97fffc8c
[ 5938.206437] 0478  34000060 d4210000 14000003 f9408260 f9008660 a94153f3 a8c27bfd d65f03c0
[ 5938.214760] 0498  a9bd7bfd 910003fd a90153f3 aa0003f4 aa1e03e0 f90017a1 d503201f f94017a1
[ 5938.223082] 04b8  91016033 aa1303e0 940f01ea f94017a1 aa1403e0 97ffffd4 aa1303e0 940f014f
[ 5938.231408] 04d8  a94153f3 a8c37bfd d65f03c0 a9bd7bfd 910003fd f9000bf3 aa0003f3 aa1e03e0
[ 5938.239731] 
[ 5938.239731] SP: 0xffffffc0dcfeb910:
[ 5938.244690] b910  00000278 00000000 00000001 00000000 00000004 00000000 00a538f0 ffffffc0
[ 5938.253018] b930  00bf4000 ffffffc0 010f52c8 ffffffc0 eb81b4a8 ffffffc0 dcfeb990 ffffffc0
[ 5938.261340] b950  00580478 ffffffc0 dcfeb990 ffffffc0 0058047c ffffffc0 20000145 00000000
[ 5938.269656] b970  ed930e00 ffffffc0 eb947a00 ffffffc0 00000000 00000080 00000278 00000000
[ 5938.277985] b990  dcfeb9b0 ffffffc0 00580ac0 ffffffc0 ed930e00 ffffffc0 eb947a00 ffffffc0
[ 5938.286306] b9b0  dcfeb9e0 ffffffc0 005c1178 ffffffc0 eb80d580 ffffffc0 eb81b9f8 ffffffc0
[ 5938.294635] b9d0  eb81ba28 ffffffc0 eb81b9f8 ffffffc0 dcfeba10 ffffffc0 005c55a0 ffffffc0
[ 5938.302957] b9f0  eb81b4a8 ffffffc0 005c5590 ffffffc0 eb81b4a8 ffffffc0 ed7c7910 ffffffc0
[ 5938.311279] 
[ 5938.311279] X3: 0xffffffc0dcf5c580:
[ 5938.316240] c580  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5938.324564] c5a0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5938.332883] c5c0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5938.341207] c5e0  5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a
[ 5938.349525] c600  00000000 00000000 dcfe8000 ffffffc0 00000002 00404040 00000000 00000000
[ 5938.357834] c620  00000000 00000000 00000001 00000017 00560532 00000001 ee6b4600 ffffffc0
[ 5938.366134] c640  00000005 00000001 00000070 00000070 00000070 00000000 00a06768 ffffffc0
[ 5938.374438] c660  000017d4 00000000 000abe5d 00000000 00000001 00000000 00000000 00000000
[ 5938.382745] 
[ 5938.382745] X4: 0xffffffc0002ed9c4:
[ 5938.387706] d9c4  b0007301 91342000 913ae021 cb000021 9343fc21 0b010041 eb21c07f 5400008a
[ 5938.396027] d9e4  cb040063 8b030c00 14000010 f9402e62 91016264 d2800000 eb04005f 54000160
[ 5938.404348] da04  eb04005f 54000100 eb21c07f 54000061 91004040 14000005 11000421 f9400042
[ 5938.412663] da24  17fffff8 d2800000 f9400bf3 a8c37bfd d65f03c0 b0006d01 39224020 d65f03c0
[ 5938.420982] da44  900078e0 a9be7bfd 910003fd b9472000 f9000bf3 340000c0 aa0203e0 aa0303f3
[ 5938.429301] da64  97ffe2c9 aa1303e0 97ffe2c7 f9400bf3 a8c27bfd d65f03c0 900078e0 a9bf7bfd
[ 5938.437627] da84  910003fd b9472000 340000a0 910003e0 9272c400 f9400800 97ffe2bb a8c17bfd
[ 5938.445950] daa4  d65f03c0 a9bc7bfd 910003fd f9001bf7 b0006e37 913d42e0 a90153f3 a9025bf5
[ 5938.454272] 
[ 5938.454272] X7: 0xffffffc0cfb17bf8:
[ 5938.459233] 7bf8  0114a000 ffffffc0 00000040 00000000 00a05000 ffffffc0 cfb17c30 ffffffc0
[ 5938.467560] 7c18  0094251c ffffffc0 0108c000 ffffffc0 dc8ba634 cb88537f cfb17ce0 ffffffc0
[ 5938.475879] 7c38  009425ac ffffffc0 cfb17d60 ffffffc0 0108c000 ffffffc0 cfb17d60 ffffffc0
[ 5938.484205] 7c58  00941e80 ffffffc0 cfb17c80 ffffffc0 00000001 00000000 f7b6e480 ffffffc0
[ 5938.492526] 7c78  dce13c99 ffffffc0 dcf53df8 ffffffc0 f7b6a1c8 ffffffc0 8720cc36 00000566
[ 5938.500844] 7c98  871f4596 00000566 00290b80 ffffffc0 f7b69d80 ffffffc0 00000001 00000965
[ 5938.509170] 7cb8  00942510 ffffffc0 6863736b 72666465 343a7165 00000000 ca25aa00 ffffffc0
[ 5938.517493] 7cd8  dc8ba634 cb88537f cfb17d10 ffffffc0 00941ea0 ffffffc0 000186a0 00000000
[ 5938.525810] 
[ 5938.525810] X8: 0xffffffc0dcf5cec0:
[ 5938.530772] cec0  00000000 00000000 00000000 00000000 0094251c ffffffc0 00000001 00000000
[ 5938.539095] cee0  ca25aa00 ffffffc0 dcf5c600 ffffffc0 ca25aa00 ffffffc0 eab1c740 ffffffc0
[ 5938.547425] cf00  0093ee04 ffffffc0 0106b000 ffffffc0 f7b6e480 ffffffc0 00000001 00000000
[ 5938.555747] cf20  dcf5cbb8 ffffffc0 00000032 00000000 dcfeb470 ffffffc0 dcfeb470 ffffffc0
[ 5938.564073] cf40  00204ff0 ffffffc0 e429e900 00000000 00000000 00000000 00000000 00000000
[ 5938.572404] cf60  05d005a0 064005f0 03840000 038d0387 0000039e 0000003c 00000009 00000040
[ 5938.580723] cf80  30343431 30303978 00000000 00000000 00000000 00000000 00000000 00000000
[ 5938.589048] cfa0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5938.597376] 
[ 5938.597376] X9: 0xffffffc0dcfeb3f0:
[ 5938.602341] b3f0  010ab000 ffffffc0 01154000 ffffffc0 00000000 00000000 00000000 00000000
[ 5938.610660] b410  00000000 00000000 00000000 00000000 000003c0 00000000 00000000 00000000
[ 5938.618986] b430  dcfeb450 ffffffc0 0027797c ffffffc0 00000009 00000000 010ab680 ffffffc0
[ 5938.627301] b450  00bea4c9 ffffffc0 00bf09d9 ffffffc0 dcfeb470 ffffffc0 002799b4 ffffffc0
[ 5938.635628] b470  dcfeb510 ffffffc0 00279bd8 ffffffc0 00bf5220 ffffffc0 0108c000 ffffffc0
[ 5938.643951] b490  00279b70 ffffffc0 00bf5220 ffffffc0 00be68f1 ffffffc0 0108c000 ffffffc0
[ 5938.652277] b4b0  dcfeb4d0 ffffffc0 00bf4000 ffffffc0 010f52c8 ffffffc0 dcfe8000 ffffffc0
[ 5938.660606] b4d0  dcfeb560 ffffffc0 00000001 00000000 011973e0 ffffffc0 00000009 00000000
[ 5938.668927] 
[ 5938.668927] X16: 0xffffffc0003ab06c:
[ 5938.673976] b06c  f9005a60 f9000001 f9000402 f9000040 f9403680 b4000040 9409a442 f9403a62
[ 5938.682297] b08c  9101c261 91016260 eb01005f 54000080 52800061 52800022 97faefdf f9404e61
[ 5938.690623] b0ac  91026260 eb00003f 1a9f07f6 aa1303e0 94165f16 34ffd7b6 91020260 97fffba0
[ 5938.698936] b0cc  17fffeba a94153f3 a9425bf5 a94363f7 a9446bf9 a94573fb a8cf7bfd d65f03c0
[ 5938.707255] b0ec  a9b37bfd 910003fd a90153f3 a9025bf5 a90363f7 a9046bf9 a90573fb b0006716
[ 5938.715580] b10c  aa0003f3 aa1e03e0 aa0103fb aa0203fa aa0303f5 d503201f f9003fb6 f94506c0
[ 5938.723893] b12c  51000742 321f67e1 f90067a0 6b01005f 928002a0 54001788 910003e1 937c7f40
[ 5938.732219] b14c  9272c421 f9400422 aa1b03e1 ab000021 fa423022 9a9f87e3 928001a0 b4001643
[ 5938.740545] 
[ 5938.740545] X19: 0xffffffc0ed930d80:
[ 5938.745594] 0d80  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5938.753912] 0da0  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5938.762234] 0dc0  5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a
[ 5938.770556] 0de0  5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a
[ 5938.778875] 0e00  ed20e800 ffffffc0 edcfdc00 ffffffc0 ed933108 ffffffc0 edcfdc28 ffffffc0
[ 5938.787205] 0e20  edcfdc00 ffffffc0 010f3770 ffffffc0 ed20d880 ffffffc0 00000001 00000003
[ 5938.795524] 0e40  ed20ea00 ffffffc0 ed20f200 ffffffc0 ed20f200 ffffffc0 00000000 00000000
[ 5938.803844] 0e60  00000000 dead4ead ffffffff 00000000 ffffffff ffffffff ed930e78 ffffffc0
[ 5938.812167] 
[ 5938.812167] X20: 0xffffffc0eb947980:
[ 5938.817215] 7980  eb9602f0 ffffffc0 eb958c00 ffffffc0 006064e8 ffffffc0 00c3e195 ffffffc0
[ 5938.825534] 79a0  000000a0 00000000 ed9dd6d0 ffffffc0 ed9dd6d0 ffffffc0 eb960000 ffffffc0
[ 5938.833854] 79c0  ec310000 ffffffc0 ec510000 00000000 b3afb3af dead4ead ffffffff 00000000
[ 5938.842183] 79e0  ffffffff ffffffff 48f248f2 dead4ead ffffffff 00000000 ffffffff ffffffff
[ 5938.850503] 7a00  00000001 00000000 00a44ba0 ffffffc0 007ff000 00000000 00000000 00000000
[ 5938.858831] 7a20  00000000 00000000 00000000 00000000 ffffffff 00000000 00000001 00000000
[ 5938.867154] 7a40  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5938.875474] 7a60  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5938.883800] 
[ 5938.883800] X21: 0xffffffc0ed930dd8:
[ 5938.888847] 0dd8  5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a
[ 5938.897172] 0df8  5a5a5a5a 5a5a5a5a ed20e800 ffffffc0 edcfdc00 ffffffc0 ed933108 ffffffc0
[ 5938.905492] 0e18  edcfdc28 ffffffc0 edcfdc00 ffffffc0 010f3770 ffffffc0 ed20d880 ffffffc0
[ 5938.913817] 0e38  00000001 00000003 ed20ea00 ffffffc0 ed20f200 ffffffc0 ed20f200 ffffffc0
[ 5938.922135] 0e58  00000000 00000000 00000000 dead4ead ffffffff 00000000 ffffffff ffffffff
[ 5938.930448] 0e78  ed930e78 ffffffc0 ed930e78 ffffffc0 dcf5c600 ffffffc0 00000000 00000000
[ 5938.938764] 0e98  00000000 00000000 ed930ea0 ffffffc0 ed930ea0 ffffffc0 00000000 dead4ead
[ 5938.947083] 0eb8  ffffffff 00000000 ffffffff ffffffff 00000000 00000000 00000000 00000000
[ 5938.955411] 
[ 5938.955411] X25: 0xffffffc000a53870:
[ 5938.960458] 3870  00a539f0 ffffffc0 00000002 00000006 00a53b08 ffffffc0 00a53a90 ffffffc0
[ 5938.968761] 3890  00a53a20 ffffffc0 00a538a8 ffffffc0 00000004 00000000 00000000 00000000
[ 5938.977079] 38b0  00a53908 ffffffc0 00000001 00000000 00000040 00000000 00a54088 ffffffc0
[ 5938.985401] 38d0  00000000 00000000 00000000 00000000 00a53fa0 ffffffc0 00000000 00000000
[ 5938.993722] 38f0  00000050 00000000 00a53fa0 ffffffc0 00000002 00000000 00a54170 ffffffc0
[ 5939.002019] 3910  00a54800 ffffffc0 0000000b 00000000 00a547d0 ffffffc0 00000002 00000030
[ 5939.010340] 3930  00000000 00000001 00000000 00000030 00000001 00000007 00000000 00000030
[ 5939.018663] 3950  0000000c 00000001 00000000 00000048 00000000 1fff1fff 00000000 0000004c
[ 5939.026984] 
[ 5939.026984] X26: 0xffffffc000bf3f80:
[ 5939.032032] 3f80  6f200078 3d646973 20007525 656d616e 65707974 4150003d 544e4552 4c454400
[ 5939.040357] 3fa0  00455445 70616320 3d65665f 63206425 665f7061 3d726576 63007825 665f7061
[ 5939.048678] 3fc0  61630070 69665f70 78652000 20003d65 3d657865 6c756e28 2000296c 64697070
[ 5939.057004] 3fe0  2064253d 3d646970 61206425 3d646975 75207525 253d6469 69672075 75253d64
[ 5939.065325] 4000  69756520 75253d64 69757320 75253d64 75736620 253d6469 67652075 253d6469
[ 5939.073645] 4020  67732075 253d6469 73662075 3d646967 74207525 253d7974 65732073 75253d73
[ 5939.081967] 4040  65662000 72757461 73253d65 646c6f20 2075253d 3d77656e 6f207525 6c5f646c
[ 5939.090287] 4060  3d6b636f 6e207525 6c5f7765 3d6b636f 72207525 253d7365 616b0064 74696475
[ 5939.098617] 
[ 5939.098617] X27: 0xffffffc0010f5248:
[ 5939.103662] 5248  00604d04 ffffffc0 00604cb4 ffffffc0 006047f8 ffffffc0 00000000 00000000
[ 5939.111986] 5268  00000000 00000000 00000000 00000000 00a51f08 ffffffc0 ec737980 ffffffc0
[ 5939.120301] 5288  00000000 00000000 00000000 00000000 00c30560 ffffffc0 00000080 00000000
[ 5939.128629] 52a8  00000000 00000000 005ba94c ffffffc0 00000000 00000000 005a4d50 ffffffc0
[ 5939.136948] 52c8  00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5939.145268] 52e8  00000000 00000000 00000000 00000000 005ba870 ffffffc0 00000000 00000000
[ 5939.153598] 5308  00000000 00000000 005bcd0c ffffffc0 005bc39c ffffffc0 005ba6b8 ffffffc0
[ 5939.161920] 5328  00590aac ffffffc0 00000000 00000000 00000000 00000000 005902b0 ffffffc0
[ 5939.170244] 
[ 5939.170244] X28: 0xffffffc0eb81b428:
[ 5939.175293] b428  00602040 ffffffc0 00000004 00000006 fffb79ad 00000000 5a5a5a5a 5a5a5a5a
[ 5939.183621] b448  5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a
[ 5939.191946] b468  5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a 5a5a5a5a eb968800 ffffffc0
[ 5939.200269] b488  eb969800 ffffffc0 006064e8 ffffffc0 00c3e195 ffffffc0 00000fc8 00000000
[ 5939.208592] b4a8  eb80d580 ffffffc0 f7babbf0 ffffffc0 eb80da38 ffffffc0 eb81c638 ffffffc0
[ 5939.216912] b4c8  eb96ae00 ffffffc0 ffffffff 00000000 01730173 dead4ead ffffffff 00000000
[ 5939.225235] b4e8  ffffffff ffffffff eb81b4f0 ffffffc0 eb81b4f0 ffffffc0 dcf5c600 ffffffc0
[ 5939.233552] b508  00000000 00000000 58c6a600 ffffffc0 eb81c698 ffffffc0 eb81cc70 ffffffc0
[ 5939.241876] 
[ 5939.241876] X29: 0xffffffc0dcfeb910:
[ 5939.246925] b910  00000278 00000000 00000001 00000000 00000004 00000000 00a538f0 ffffffc0
[ 5939.255245] b930  00bf4000 ffffffc0 010f52c8 ffffffc0 eb81b4a8 ffffffc0 dcfeb990 ffffffc0
[ 5939.263572] b950  00580478 ffffffc0 dcfeb990 ffffffc0 0058047c ffffffc0 20000145 00000000
[ 5939.271888] b970  ed930e00 ffffffc0 eb947a00 ffffffc0 00000000 00000080 00000278 00000000
[ 5939.280218] b990  dcfeb9b0 ffffffc0 00580ac0 ffffffc0 ed930e00 ffffffc0 eb947a00 ffffffc0
[ 5939.288543] b9b0  dcfeb9e0 ffffffc0 005c1178 ffffffc0 eb80d580 ffffffc0 eb81b9f8 ffffffc0
[ 5939.296863] b9d0  eb81ba28 ffffffc0 eb81b9f8 ffffffc0 dcfeba10 ffffffc0 005c55a0 ffffffc0
[ 5939.305189] b9f0  eb81b4a8 ffffffc0 005c5590 ffffffc0 eb81b4a8 ffffffc0 ed7c7910 ffffffc0
[ 5939.313507] 
[ 5939.315005] ---[ end trace a706d80e259a6576 ]---
[ 5939.319622] Call trace:
[ 5939.322085] [<ffffffc00058047c>] __iommu_detach_group+0x60/0x7c
[ 5939.328005] [<ffffffc000580ac0>] iommu_detach_device+0xb0/0xd0
[ 5939.333840] [<ffffffc0005c1178>] rockchip_drm_dma_detach_device+0x38/0x44
[ 5939.340628] [<ffffffc0005c55a0>] vop_crtc_disable+0x268/0x2ac
[ 5939.346376] [<ffffffc000591858>] drm_atomic_helper_commit_modeset_disables+0x158/0x364
[ 5939.354286] [<ffffffc0005c1a94>] rockchip_atomic_commit_complete+0x224/0x3bc
[ 5939.361329] [<ffffffc0005c1d50>] rockchip_drm_atomic_commit+0x124/0x144
[ 5939.367941] [<ffffffc0005b4820>] drm_atomic_commit+0x70/0x7c
[ 5939.373601] [<ffffffc000592384>] drm_atomic_helper_set_config+0x5c/0xac
[ 5939.380213] [<ffffffc0005a2548>] drm_mode_set_config_internal+0x68/0xe4
[ 5939.386824] [<ffffffc0005a7cb8>] drm_mode_setcrtc+0x404/0x48c
[ 5939.392574] [<ffffffc0005982f0>] drm_ioctl+0x2ac/0x428
[ 5939.397713] [<ffffffc0005b5e10>] drm_compat_ioctl+0x3c/0x70
[ 5939.403288] [<ffffffc0003b88d4>] compat_SyS_ioctl+0x134/0x10ac
[ 5939.409123] [<ffffffc000203e90>] __sys_trace_return+0x0/0x4
[ 5939.414756] rk_timer (IRQ 17): 243 IRQs in the last 1 ms
[ 5939.415357] arch_timer (IRQ 15): 1150 IRQs in the last 1 ms
[ 5939.415651] arch_timer (IRQ 15): 1101 IRQs in the last 1 ms
[ 5939.415662] arch_timer (IRQ 15): 1117 IRQs in the last 1 ms
[ 5939.416914] rockchip-vop ff900000.vop: Failed to attach iommu device
[ 5939.416918] rockchip-vop ff900000.vop: failed to attach dma mapping, -16
[ 5939.416954] rockchip-vop ff900000.vop: [drm:vop_crtc_enable] *ERROR* Failed to enable vop (-16)
[ 5939.458652] arch_timer (IRQ 15): 1086 IRQs in the last 1 ms
[ 5939.458661] arch_timer (IRQ 15): 1103 IRQs in the last 1 ms
[ 5939.458718] rk_timer (IRQ 17): 232 IRQs in the last 1 ms
[ 5939.460646] rk_timer (IRQ 17): 237 IRQs in the last 1 ms
[ 5939.462705] rk_timer (IRQ 17): 173 IRQs in the last 1 ms
[ 5939.470661] rk_timer (IRQ 17): 139 IRQs in the last 1 ms
[ 5939.909591] ------------[ cut here ]------------
[ 5939.914260] WARNING: at /mnt/host/source/src/third_party/kernel/v4.4/drivers/gpu/drm/rockchip/rockchip_drm_vop.c:831
[ 5939.924778] Modules linked in: ip6t_REJECT nf_reject_ipv6 ip6table_mangle xt_TCPMSS veth rfcomm btusb btrtl btbcm btintel uinput uvcvideo videobuf2_vmalloc mwifiex_pcie mwifiex bluetooth ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat xt_mark bridge fuse stp llc zram cfg80211 ip6table_filter smsc95xx usbnet mii joydev
[ 5939.955349] 
[ 5939.956855] CPU: 2 PID: 1906 Comm: DrmThread Tainted: G        W       4.4.52 #60
[ 5939.964334] Hardware name: Google Kevin (DT)
[ 5939.968612] task: ffffffc0dcf5c600 ti: ffffffc0dcfe8000 task.ti: ffffffc0dcfe8000
[ 5939.976117] PC is at vop_plane_atomic_update+0x50/0x1764
[ 5939.981459] LR is at drm_atomic_helper_commit_planes+0x194/0x1b4
[ 5939.987485] pc : [<ffffffc0005c6938>] lr : [<ffffffc000591d6c>] pstate: 80000145
[ 5939.994886] sp : ffffffc0dcfeb9c0
[ 5939.998220] x29: ffffffc0dcfeb9c0 x28: ffffffc058c6be00 
[ 5940.003583] x27: ffffffc0eb81b4a8 x26: ffffffc000bf4000 
[ 5940.008943] x25: ffffffc0eb80d580 x24: ffffffc0eb81b4a8 
[ 5940.014310] x23: ffffffc000a53270 x22: ffffffc000a538a8 
[ 5940.019674] x21: ffffffc0eb81ba90 x20: 0000000000000002 
[ 5940.025029] x19: ffffffc060c58c80 x18: 0000000000000000 
[ 5940.030385] x17: 00000000000000b0 x16: 0000000000000007 
[ 5940.035757] x15: 000000000000000e x14: ffffffc000a43000 
[ 5940.041118] x13: 0000000000000001 x12: 0000000000000019 
[ 5940.046465] x11: 0000000000000033 x10: 000000000000004c 
[ 5940.051815] x9 : 0000000000000068 x8 : 0000000000000007 
[ 5940.057170] x7 : 0000000000000010 x6 : 0000000000000015 
[ 5940.062518] x5 : 0000000016dabf18 x4 : 0000000000000000 
[ 5940.067867] x3 : 0000000000000000 x2 : ffffffc0005c68e8 
[ 5940.073228] x1 : ffffffc058c47a00 x0 : 0000000000000000 

<cut>

[ 5941.233067] ---[ end trace a706d80e259a6577 ]---
[ 5941.237695] Call trace:
[ 5941.240175] [<ffffffc0005c6938>] vop_plane_atomic_update+0x50/0x1764
[ 5941.246558] [<ffffffc000591d6c>] drm_atomic_helper_commit_planes+0x194/0x1b4
[ 5941.253625] [<ffffffc0005c1ab0>] rockchip_atomic_commit_complete+0x240/0x3bc
[ 5941.260683] [<ffffffc0005c1d50>] rockchip_drm_atomic_commit+0x124/0x144
[ 5941.267316] [<ffffffc0005b4820>] drm_atomic_commit+0x70/0x7c
[ 5941.273002] [<ffffffc000592384>] drm_atomic_helper_set_config+0x5c/0xac
[ 5941.279638] [<ffffffc0005a2548>] drm_mode_set_config_internal+0x68/0xe4
[ 5941.286271] [<ffffffc0005a7cb8>] drm_mode_setcrtc+0x404/0x48c
[ 5941.292033] [<ffffffc0005982f0>] drm_ioctl+0x2ac/0x428
[ 5941.297188] [<ffffffc0005b5e10>] drm_compat_ioctl+0x3c/0x70
[ 5941.302778] [<ffffffc0003b88d4>] compat_SyS_ioctl+0x134/0x10ac
[ 5941.308632] [<ffffffc000203e90>] __sys_trace_return+0x0/0x4
[ 5941.315585] ------------[ cut here ]------------
[ 5941.320234] WARNING: at /mnt/host/source/src/third_party/kernel/v4.4/drivers/gpu/drm/rockchip/rockchip_drm_vop.c:831
[ 5941.330741] Modules linked in: ip6t_REJECT nf_reject_ipv6 ip6table_mangle xt_TCPMSS veth rfcomm btusb btrtl btbcm btintel uinput uvcvideo videobuf2_vmalloc mwifiex_pcie mwifiex bluetooth ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat xt_mark bridge fuse stp llc zram cfg80211 ip6table_filter smsc95xx usbnet mii joydev
[ 5941.361172] 
[ 5941.362672] CPU: 2 PID: 1906 Comm: DrmThread Tainted: G        W       4.4.52 #60
[ 5941.370138] Hardware name: Google Kevin (DT)
[ 5941.374410] task: ffffffc0dcf5c600 ti: ffffffc0dcfe8000 task.ti: ffffffc0dcfe8000
[ 5941.381904] PC is at vop_plane_atomic_update+0x50/0x1764
[ 5941.387229] LR is at drm_atomic_helper_commit_planes+0x194/0x1b4
[ 5941.393235] pc : [<ffffffc0005c6938>] lr : [<ffffffc000591d6c>] pstate: 80000145
[ 5941.400628] sp : ffffffc0dcfeb9c0
[ 5941.403946] x29: ffffffc0dcfeb9c0 x28: ffffffc058c6b800 
[ 5941.409293] x27: ffffffc0eb81b4a8 x26: ffffffc000bf4000 
[ 5941.414640] x25: ffffffc0eb80d580 x24: ffffffc0eb81b4a8 
[ 5941.419984] x23: ffffffc000a53270 x22: ffffffc000a538c0 
[ 5941.425334] x21: ffffffc0eb81bd08 x20: 0000000000000004 
[ 5941.430675] x19: ffffffc060c58a00 x18: 0000000000000000 
[ 5941.436018] x17: 00000000000000b0 x16: 0000000000000007 
[ 5941.441359] x15: 000000000000000e x14: ffffffc000a43000 
[ 5941.446701] x13: 0000000000000001 x12: 0000000000000019 
[ 5941.452043] x11: 0000000000000033 x10: 000000000000004c 
[ 5941.457389] x9 : 0000000000000068 x8 : 0000000000000007 
[ 5941.462735] x7 : 0000000000000010 x6 : 0000000000000015 
[ 5941.468078] x5 : 0000000016dabf18 x4 : 0000000000000000 
[ 5941.473422] x3 : 0000000000000000 x2 : ffffffc0005c68e8 
[ 5941.478764] x1 : ffffffc08628d800 x0 : 0000000000000000 

<cut>

[ 5942.631006] ---[ end trace a706d80e259a6578 ]---
[ 5942.635622] Call trace:
[ 5942.638085] [<ffffffc0005c6938>] vop_plane_atomic_update+0x50/0x1764
[ 5942.644449] [<ffffffc000591d6c>] drm_atomic_helper_commit_planes+0x194/0x1b4
[ 5942.651498] [<ffffffc0005c1ab0>] rockchip_atomic_commit_complete+0x240/0x3bc
[ 5942.658547] [<ffffffc0005c1d50>] rockchip_drm_atomic_commit+0x124/0x144
[ 5942.665164] [<ffffffc0005b4820>] drm_atomic_commit+0x70/0x7c
[ 5942.670827] [<ffffffc000592384>] drm_atomic_helper_set_config+0x5c/0xac
[ 5942.677447] [<ffffffc0005a2548>] drm_mode_set_config_internal+0x68/0xe4
[ 5942.684062] [<ffffffc0005a7cb8>] drm_mode_setcrtc+0x404/0x48c
[ 5942.689810] [<ffffffc0005982f0>] drm_ioctl+0x2ac/0x428
[ 5942.694949] [<ffffffc0005b5e10>] drm_compat_ioctl+0x3c/0x70
[ 5942.700528] [<ffffffc0003b88d4>] compat_SyS_ioctl+0x134/0x10ac
[ 5942.706363] [<ffffffc000203e90>] __sys_trace_return+0x0/0x4
[ 5942.712356] ------------[ cut here ]------------
[ 5942.716996] WARNING: at /mnt/host/source/src/third_party/kernel/v4.4/drivers/gpu/drm/rockchip/rockchip_drm_vop.c:1328
[ 5942.727594] Modules linked in: ip6t_REJECT nf_reject_ipv6 ip6table_mangle xt_TCPMSS veth rfcomm btusb btrtl btbcm btintel uinput uvcvideo videobuf2_vmalloc mwifiex_pcie mwifiex bluetooth ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_nat_ipv4 nf_nat xt_mark bridge fuse stp llc zram cfg80211 ip6table_filter smsc95xx usbnet mii joydev
[ 5942.758147] 
[ 5942.759650] CPU: 2 PID: 1906 Comm: DrmThread Tainted: G        W       4.4.52 #60
[ 5942.767125] Hardware name: Google Kevin (DT)
[ 5942.771398] task: ffffffc0dcf5c600 ti: ffffffc0dcfe8000 task.ti: ffffffc0dcfe8000
[ 5942.778887] PC is at vop_crtc_atomic_flush+0x38/0x210
[ 5942.783946] LR is at drm_atomic_helper_commit_planes+0x148/0x1b4
[ 5942.789951] pc : [<ffffffc0005c45f4>] lr : [<ffffffc000591d20>] pstate: 80000145
[ 5942.797339] sp : ffffffc0dcfeba20
[ 5942.800650] x29: ffffffc0dcfeba20 x28: ffffffc0eb81b4a8 
[ 5942.805993] x27: ffffffc058c6bc00 x26: ffffffc000bf4000 
[ 5942.811333] x25: ffffffc0eb80d580 x24: ffffffc0eb81b4a8 
[ 5942.816673] x23: ffffffc000a53270 x22: 0000000000000001 
[ 5942.822013] x21: ffffffc058c6bc00 x20: ffffffc0eb80d580 
[ 5942.827353] x19: ffffffc0eb81b4a8 x18: 0000000000000000 
[ 5942.832690] x17: 00000000000000b0 x16: 0000000000000007 
[ 5942.838031] x15: 000000000000000e x14: ffffffc000a43000 
[ 5942.843371] x13: 0000000000000001 x12: 0000000000000019 
[ 5942.848710] x11: 0000000000000033 x10: 000000000000004c 
[ 5942.854053] x9 : 0000000000000068 x8 : 0000000000000007 
[ 5942.859395] x7 : 0000000000000010 x6 : 0000000000000015 
[ 5942.864734] x5 : 0000000016dabf18 x4 : 0000000000000000 
[ 5942.870075] x3 : 0000000000000001 x2 : ffffffc0005c45bc 
[ 5942.875415] x1 : ffffffc0681b5f80 x0 : 0000000000000000 

<cut>

[ 5944.027126] ---[ end trace a706d80e259a6579 ]---
[ 5944.031745] Call trace:
[ 5944.034209] [<ffffffc0005c45f4>] vop_crtc_atomic_flush+0x38/0x210
[ 5944.040302] [<ffffffc000591d20>] drm_atomic_helper_commit_planes+0x148/0x1b4
[ 5944.047350] [<ffffffc0005c1ab0>] rockchip_atomic_commit_complete+0x240/0x3bc
[ 5944.054394] [<ffffffc0005c1d50>] rockchip_drm_atomic_commit+0x124/0x144
[ 5944.061008] [<ffffffc0005b4820>] drm_atomic_commit+0x70/0x7c
[ 5944.066670] [<ffffffc000592384>] drm_atomic_helper_set_config+0x5c/0xac
[ 5944.073285] [<ffffffc0005a2548>] drm_mode_set_config_internal+0x68/0xe4
[ 5944.079900] [<ffffffc0005a7cb8>] drm_mode_setcrtc+0x404/0x48c
[ 5944.085646] [<ffffffc0005982f0>] drm_ioctl+0x2ac/0x428
[ 5944.090783] [<ffffffc0005b5e10>] drm_compat_ioctl+0x3c/0x70
[ 5944.096359] [<ffffffc0003b88d4>] compat_SyS_ioctl+0x134/0x10ac
[ 5944.102194] [<ffffffc000203e90>] __sys_trace_return+0x0/0x4
[ 5944.387599] ------------[ cut here ]------------
[ 5944.392224] WARNING: at /mnt/host/source/src/third_party/kernel/v4.4/drivers/gpu/drm/rockchip/rockchip_drm_vop.c:831

<cut>

[ 5948.975360] sched: RT throttling activated for rt_rq ffffffc0f7b19648 (cpu 0)
[ 5948.975360] potential CPU hogs:
[ 5948.975360]  irq/230-cros-ec (805)
[ 5948.975360]  rockchip_drm_at (165)

---

At this point the system is fully wedged.