[Bug 102889] New: [GLK] Crash when switching to framebuffer

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Sep 20 07:00:53 UTC 2017 

https://bugs.freedesktop.org/show_bug.cgi?id=102889

            Bug ID: 102889
           Summary: [GLK] Crash when switching to framebuffer
           Product: DRI
           Version: XOrg git
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: dan at reactivated.net
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Trying Linux on this new Acer XC-830 Geminilake motherboard for the first time,
it is crashing during boot, every time. The last visible console log message
is:

 fb: switching to inteldrmfb from EFI VGA

Reproduced this on Linux 4.13, Linus git as of today, and on current
drm-intel-nightly.

The board has 1 VGA output and 2 HDMI outputs. It doesn't seem to matter which
ports are in use.


With drm-intel-nightly I caught the full crash with netconsole:

[drm:i915_driver_load [i915]] No PCH found.
[drm:intel_power_domains_init [i915]] Allowed DC state mask 09
[drm:intel_device_info_dump [i915]] i915 device info: platform=GEMINILAKE gen=9
pciid=0x3184 rev=0x01
[drm:intel_device_info_dump [i915]] i915 device info: is_mobile: no
[drm:intel_device_info_dump [i915]] i915 device info: is_lp: yes
[drm:intel_device_info_dump [i915]] i915 device info: is_alpha_support: no
[drm:intel_device_info_dump [i915]] i915 device info: has_64bit_reloc: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_aliasing_ppgtt: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_csr: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_ddi: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_dp_mst: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_reset_engine: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_fbc: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_fpga_dbg: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_full_ppgtt: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_full_48bit_ppgtt: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_gmch_display: no
[drm:intel_device_info_dump [i915]] i915 device info: has_guc: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_guc_ct: no
[drm:intel_device_info_dump [i915]] i915 device info: has_hotplug: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_l3_dpf: no
[drm:intel_device_info_dump [i915]] i915 device info: has_llc: no
[drm:intel_device_info_dump [i915]] i915 device info:
has_logical_ring_contexts: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_overlay: no
[drm:intel_device_info_dump [i915]] i915 device info: has_pipe_cxsr: no
[drm:intel_device_info_dump [i915]] i915 device info: has_pooled_eu: no
[drm:intel_device_info_dump [i915]] i915 device info: has_psr: no
[drm:intel_device_info_dump [i915]] i915 device info: has_rc6: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_rc6p: no
[drm:intel_device_info_dump [i915]] i915 device info: has_resource_streamer:
yes
[drm:intel_device_info_dump [i915]] i915 device info: has_runtime_pm: yes
[drm:intel_device_info_dump [i915]] i915 device info: has_snoop: yes
[drm:intel_device_info_dump [i915]] i915 device info: unfenced_needs_alignment:
no
[drm:intel_device_info_dump [i915]] i915 device info: cursor_needs_physical: no
[drm:intel_device_info_dump [i915]] i915 device info: hws_needs_physical: no
[drm:intel_device_info_dump [i915]] i915 device info: overlay_needs_physical:
no
[drm:intel_device_info_dump [i915]] i915 device info: supports_tv: no
[drm:intel_device_info_dump [i915]] i915 device info: has_ipc: yes
[drm:intel_device_info_runtime_init [i915]] slice mask: 0001
[drm:intel_device_info_runtime_init [i915]] slice total: 1
[drm:intel_device_info_runtime_init [i915]] subslice total: 3
[drm:intel_device_info_runtime_init [i915]] subslice mask 0007
[drm:intel_device_info_runtime_init [i915]] subslice per slice: 3
[drm:intel_device_info_runtime_init [i915]] EU total: 18
[drm:intel_device_info_runtime_init [i915]] EU per subslice: 6
[drm:intel_device_info_runtime_init [i915]] has slice power gating: n
[drm:intel_device_info_runtime_init [i915]] has subslice power gating: y
[drm:intel_device_info_runtime_init [i915]] has EU power gating: y
[drm:i915_driver_load [i915]] ppgtt mode: 3
[drm:i915_driver_load [i915]] use GPU semaphores? no
[drm] Memory usable by graphics device = 4096M
[drm:i915_ggtt_probe_hw [i915]] GMADR size = 256M
[drm:i915_ggtt_probe_hw [i915]] GTT stolen size = 64M
checking generic (90000000 7e9000) vs hw (90000000 10000000)
fb: switching to inteldrmfb from EFI VGA
Console: switching to colour dummy device 80x25
[drm] Replacing VGA console driver
[drm:i915_gem_init_stolen [i915]] Memory reserved for graphics device: 65536K,
usable: 64512K
[drm:sanitize_rc6_option [i915]] BIOS enabled RC states: HW_CTRL off HW_RC6 off
SW_TARGET_STATE 4
[drm:intel_opregion_setup [i915]] graphic opregion physical addr: 0x79bf5018
[drm:intel_opregion_setup [i915]] Public ACPI methods supported
[drm:intel_opregion_setup [i915]] ASLE supported
[drm:intel_opregion_setup [i915]] Found valid VBT in ACPI OpRegion (RVDA)
[drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[drm] Driver supports precise vblank timestamp query.
[drm:intel_bios_init [i915]] Set default to SSC at 100000 kHz
[drm:intel_bios_init [i915]] VBT signature "$VBT GEMINILAKE     ", BDB version
210
[drm:intel_bios_init [i915]] BDB_GENERAL_FEATURES int_tv_support 0
int_crt_support 0 lvds_use_ssc 0 lvds_ssc_freq 120000 display_clock_mode 0
fdi_rx_polarity_inverted 0
[drm:intel_bios_init [i915]] crt_ddc_bus_pin: 2
[drm:intel_opregion_get_panel_type [i915]] Failed to get panel details from
OpRegion (-19)
[drm:intel_bios_init [i915]] Panel type: 2 (VBT)
[drm:intel_bios_init [i915]] DRRS supported mode is seamless
[drm:intel_bios_init [i915]] Found panel mode in BIOS VBT tables:
[drm:drm_mode_debug_printmodeline] Modeline 0:"1024x768" 0 65000 1024 1048 1184
1344 768 771 777 806 0x8 0xa
[drm:intel_bios_init [i915]] VBT initial LVDS value 300
[drm:intel_bios_init [i915]] VBT backlight PWM modulation frequency 200 Hz,
active high, min brightness 0, level 180, controller 0
[drm:intel_bios_init [i915]] Unsupported child device size for SDVO mapping.
[drm:intel_bios_init [i915]] Expected child device config size for VBT version
210 not known; assuming 38
[drm:intel_bios_init [i915]] DRRS State Enabled:1
[drm:intel_bios_init [i915]] Port A VBT info: DP:1 HDMI:1 DVI:1 EDP:0 CRT:0
[drm:intel_bios_init [i915]] Port A is TMDS compatible
[drm:intel_bios_init [i915]] VBT HDMI level shift for port A: 0
[drm:intel_bios_init [i915]] Port B VBT info: DP:0 HDMI:1 DVI:1 EDP:0 CRT:0
[drm:intel_bios_init [i915]] VBT HDMI level shift for port B: 8
[drm:intel_bios_init [i915]] Port C VBT info: DP:0 HDMI:1 DVI:1 EDP:0 CRT:0
[drm:intel_bios_init [i915]] VBT HDMI level shift for port C: 8
[drm:intel_dsm_detect [i915]] no _DSM method for intel device
[drm:gen9_set_dc_state [i915]] Setting DC state from 00 to 00
[drm:intel_power_well_enable [i915]] enabling power well 1
[drm:intel_update_cdclk [i915]] Current CD clock rate: 316800 kHz, VCO: 633600
kHz, ref: 19200 kHz
[drm:intel_power_well_enable [i915]] enabling always-on
[drm:intel_power_well_enable [i915]] enabling DC off
[drm:gen9_set_dc_state [i915]] Setting DC state from 00 to 00
[drm:intel_power_well_enable [i915]] enabling power well 2
i915 0000:00:02.0: vgaarb: changed VGA decodes:
olddecodes=io+mem,decodes=io+mem:owns=io+mem
[drm:intel_power_well_enable [i915]] enabling dpio-common-a
[drm:intel_power_well_enable [i915]] enabling dpio-common-b
[drm:intel_power_well_enable [i915]] enabling dpio-common-c
[drm:_bxt_ddi_phy_init [i915]] DDI PHY 2 already enabled, won't reprogram it
[drm:intel_power_well_enable [i915]] enabling AUX A
[drm:intel_power_well_enable [i915]] enabling AUX B
[drm:intel_power_well_enable [i915]] enabling AUX C
[drm:intel_csr_ucode_init [i915]] Loading i915/glk_dmc_ver1_04.bin
[drm:__bxt_hpd_detection_setup [i915]] Invert bit setting: hp_ctl:18001818
hp_port:38
[drm:intel_fbc_init [i915]] Sanitized enable_fbc value: 1
[drm:intel_print_wm_latency [i915]] Gen9 Plane WM0 latency 7 (7.0 usec)
[drm:intel_print_wm_latency [i915]] Gen9 Plane WM1 latency 7 (7.0 usec)
[drm:intel_print_wm_latency [i915]] Gen9 Plane WM2 latency 8 (8.0 usec)
[drm:intel_print_wm_latency [i915]] Gen9 Plane WM3 latency 22 (22.0 usec)
[drm:intel_print_wm_latency [i915]] Gen9 Plane WM4 latency 22 (22.0 usec)
[drm:intel_print_wm_latency [i915]] Gen9 Plane WM5 latency 22 (22.0 usec)
[drm:intel_print_wm_latency [i915]] Gen9 Plane WM6 latency 22 (22.0 usec)
[drm:intel_print_wm_latency [i915]] Gen9 Plane WM7 latency 22 (22.0 usec)
[drm:intel_modeset_init [i915]] 3 display pipes available.
[drm:intel_update_cdclk [i915]] Current CD clock rate: 316800 kHz, VCO: 633600
kHz, ref: 19200 kHz
[drm:intel_update_max_cdclk [i915]] Max CD clock rate: 316800 kHz
[drm:intel_update_max_cdclk [i915]] Max dotclock rate: 627264 kHz
[drm:intel_ddi_init [i915]] BXT BIOS forgot to set DDI_A_4_LANES for port A;
fixing
[drm:intel_dp_init_connector [i915]] Adding DP connector on port A
[drm:intel_dp_init_connector [i915]] using AUX A for port A (VBT)
[drm:intel_hdmi_init_connector [i915]] Adding HDMI connector on port A
Missing switch case (0) in bxt_port_to_ddc_pin
------------[ cut here ]------------
WARNING: CPU: 2 PID: 999 at drivers/gpu/drm/i915/intel_hdmi.c:1883
intel_hdmi_init_connector+0x26d/0x380 [i915]
Modules linked in: i915(+)
CPU: 2 PID: 999 Comm: insmod Not tainted 4.14.0-rc1+ #78
Hardware name: Acer                   Default string/Default string, BIOS E11
09/07/2017
task: ffff974ab6d53500 task.stack: ffffbb1b01b14000
RIP: 0010:intel_hdmi_init_connector+0x26d/0x380 [i915]
RSP: 0018:ffffbb1b01b179e8 EFLAGS: 00010292
RAX: 000000000000002e RBX: ffff974ab5a21800 RCX: 0000000000000006
RDX: 0000000000000007 RSI: 0000000000000092 RDI: ffff974abfd0cbb0
RBP: ffffbb1b01b17a18 R08: 0000000000000001 R09: 0000000000000407
R10: 0000000000000001 R11: ffffffff87ee07cd R12: ffff974ab76c8000
R13: ffff974ab5eb9000 R14: 0000000000000000 R15: 0000000000000041
FS:  00007f750f4ee700(0000) GS:ffff974abfd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ad0df688b8 CR3: 0000000178f11000 CR4: 00000000003406e0
Call Trace:
 intel_ddi_init+0x3ef/0x460 [i915]
 intel_modeset_init+0x13e2/0x18e0 [i915]
 ? intel_setup_gmbus+0x2a7/0x310 [i915]
 i915_driver_load+0xa14/0x15d0 [i915]
 i915_pci_probe+0x27/0x40 [i915]
 local_pci_probe+0x40/0xa0
 pci_device_probe+0xb6/0x140
 driver_probe_device+0x224/0x2f0
 __driver_attach+0x96/0xa0
 ? driver_probe_device+0x2f0/0x2f0
 bus_for_each_dev+0x5b/0x90
 driver_attach+0x19/0x20
 bus_add_driver+0x113/0x210
 driver_register+0x5b/0xd0
 __pci_register_driver+0x55/0x60
 i915_init+0x57/0x5a [i915]
 ? 0xffffffffc01cb000
 do_one_initcall+0x3e/0x160
 ? __vunmap+0x7c/0xb0
 ? kfree+0x145/0x160
 ? kmem_cache_alloc_trace+0x33/0x150
 do_init_module+0x5a/0x1f1
 load_module+0x234a/0x28f0
 ? kernel_read_file+0x15b/0x180
 SYSC_finit_module+0xba/0xc0
 ? SYSC_finit_module+0xba/0xc0
 SyS_finit_module+0x9/0x10
 entry_SYSCALL_64_fastpath+0x13/0x94
RIP: 0033:0x7f750f031259
RSP: 002b:00007ffd770af4e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 00007f750f2e6b58 RCX: 00007f750f031259
RDX: 0000000000000000 RSI: 000055bbe8276439 RDI: 0000000000000003
RBP: 000000000000270e R08: 0000000000000000 R09: 00007f750f2e8ea0
R10: 0000000000000003 R11: 0000000000000206 R12: 0000000000001020
R13: 00007f750f2e6b58 R14: 000055bbe84831e0 R15: 00007f750f2e6b00
Code: 00 00 0f 84 d8 fe ff ff 41 83 fe 02 41 b9 02 00 00 00 0f 84 c8 fe ff ff
48 c7 c2 00 6c 17 c0 48 c7 c7 28 b6 19 c0 e8 5f f7 b4 c6 <0f> ff 41 b9 01 00 00
00 e9 a8 fe ff ff 45 89 f8 48 c7 c2 00 b8 
---[ end trace aacdac258098f6df ]---
[drm:intel_hdmi_init_connector [i915]] Using DDC pin 0x1 for port A (platform
default)
WARN_ON(port == PORT_A)
------------[ cut here ]------------
WARNING: CPU: 2 PID: 999 at drivers/gpu/drm/i915/intel_hdmi.c:2023
intel_hdmi_init_connector+0x370/0x380 [i915]
Modules linked in: i915(+)
CPU: 2 PID: 999 Comm: insmod Tainted: G        W       4.14.0-rc1+ #78
Hardware name: Acer                   Default string/Default string, BIOS E11
09/07/2017
task: ffff974ab6d53500 task.stack: ffffbb1b01b14000
RIP: 0010:intel_hdmi_init_connector+0x370/0x380 [i915]
RSP: 0018:ffffbb1b01b179e8 EFLAGS: 00010292
RAX: 0000000000000017 RBX: ffff974ab5a21800 RCX: ffffffff87c44c98
RDX: 0000000000000001 RSI: 0000000000000092 RDI: ffffffff87ede78c
RBP: ffffbb1b01b17a18 R08: 0000000000000017 R09: 000000000000043e
R10: 0000000000000001 R11: 0000000000000000 R12: ffff974ab76c8000
R13: ffff974ab5eb9000 R14: 0000000000000000 R15: 0000000000000041
FS:  00007f750f4ee700(0000) GS:ffff974abfd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ad0df688b8 CR3: 0000000178f11000 CR4: 00000000003406e0
Call Trace:
 intel_ddi_init+0x3ef/0x460 [i915]
 intel_modeset_init+0x13e2/0x18e0 [i915]
 ? intel_setup_gmbus+0x2a7/0x310 [i915]
 i915_driver_load+0xa14/0x15d0 [i915]
 i915_pci_probe+0x27/0x40 [i915]
 local_pci_probe+0x40/0xa0
 pci_device_probe+0xb6/0x140
 driver_probe_device+0x224/0x2f0
 __driver_attach+0x96/0xa0
 ? driver_probe_device+0x2f0/0x2f0
 bus_for_each_dev+0x5b/0x90
 driver_attach+0x19/0x20
 bus_add_driver+0x113/0x210
 driver_register+0x5b/0xd0
 __pci_register_driver+0x55/0x60
 i915_init+0x57/0x5a [i915]
 ? 0xffffffffc01cb000
 do_one_initcall+0x3e/0x160
 ? __vunmap+0x7c/0xb0
 ? kfree+0x145/0x160
 ? kmem_cache_alloc_trace+0x33/0x150
 do_init_module+0x5a/0x1f1
 load_module+0x234a/0x28f0
 ? kernel_read_file+0x15b/0x180
 SYSC_finit_module+0xba/0xc0
 ? SYSC_finit_module+0xba/0xc0
 SyS_finit_module+0x9/0x10
 entry_SYSCALL_64_fastpath+0x13/0x94
RIP: 0033:0x7f750f031259
RSP: 002b:00007ffd770af4e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 00007f750f2e6b58 RCX: 00007f750f031259
RDX: 0000000000000000 RSI: 000055bbe8276439 RDI: 0000000000000003
RBP: 000000000000270e R08: 0000000000000000 R09: 00007f750f2e8ea0
R10: 0000000000000003 R11: 0000000000000206 R12: 0000000000001020
R13: 00007f750f2e6b58 R14: 000055bbe84831e0 R15: 00007f750f2e6b00
Code: 28 b6 19 c0 44 89 4d d0 e8 7a f6 b4 c6 0f ff 44 8b 4d d0 e9 c5 fd ff ff
48 c7 c6 e5 54 18 c0 48 c7 c7 31 54 18 c0 e8 5c f6 b4 c6 <0f> ff e9 59 fe ff ff
66 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 
---[ end trace aacdac258098f6e0 ]---
[drm:intel_hdmi_init_connector [i915]] Adding HDMI connector on port B
[drm:intel_hdmi_init_connector [i915]] Using DDC pin 0x1 for port B (VBT)
[drm:intel_hdmi_init_connector [i915]] Adding HDMI connector on port C
[drm:intel_hdmi_init_connector [i915]] Using DDC pin 0x2 for port C (VBT)
[drm:intel_dsi_init [i915]] 
[drm:intel_set_plane_visible [i915]] pipe A active planes 0x1
[drm:intel_modeset_setup_hw_state [i915]] [CRTC:42:pipe A] hw state readout:
enabled
[drm:intel_set_plane_visible [i915]] pipe B active planes 0x0
[drm:intel_modeset_setup_hw_state [i915]] [CRTC:58:pipe B] hw state readout:
disabled
[drm:intel_set_plane_visible [i915]] pipe C active planes 0x0
[drm:intel_modeset_setup_hw_state [i915]] [CRTC:74:pipe C] hw state readout:
disabled
[drm:intel_modeset_setup_hw_state [i915]] PORT PLL A hw state readout:
crtc_mask 0x00000000, on 0
[drm:intel_modeset_setup_hw_state [i915]] PORT PLL B hw state readout:
crtc_mask 0x00000000, on 0
[drm:intel_modeset_setup_hw_state [i915]] PORT PLL C hw state readout:
crtc_mask 0x00000001, on 1
[drm:intel_modeset_setup_hw_state [i915]] [ENCODER:75:DDI A] hw state readout:
disabled, pipe A
[drm:intel_modeset_setup_hw_state [i915]] [ENCODER:80:DDI B] hw state readout:
disabled, pipe A
[drm:intel_modeset_setup_hw_state [i915]] [ENCODER:83:DDI C] hw state readout:
enabled, pipe A
[drm:intel_modeset_setup_hw_state [i915]] [CONNECTOR:76:DP-1] hw state readout:
disabled
BUG: unable to handle kernel NULL pointer dereference at           (null)
IP:           (null)
PGD 0 P4D 0 
Oops: 0010 [#1] SMP
Modules linked in: i915(+)
CPU: 2 PID: 999 Comm: insmod Tainted: G        W       4.14.0-rc1+ #78
Hardware name: Acer                   Default string/Default string, BIOS E11
09/07/2017
task: ffff974ab6d53500 task.stack: ffffbb1b01b14000
RIP: 0010:          (null)
RSP: 0018:ffffbb1b01b179f0 EFLAGS: 00010286
RAX: ffff974ab5a21800 RBX: ffff974ab76c8000 RCX: 000000000000004c
RDX: ffffffff87ad6b49 RSI: 0000000000000001 RDI: ffff974ab5a21800
RBP: ffffbb1b01b17a58 R08: 0000000000000002 R09: 0000000000000487
R10: 0000000000000004 R11: ffffffff87ee07cd R12: ffff974ab76c8340
R13: ffff974ab5a21800 R14: ffffffffc0182bff R15: ffffffffc0182bf7
FS:  00007f750f4ee700(0000) GS:ffff974abfd00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000178f11000 CR4: 00000000003406e0
Call Trace:
 ? intel_modeset_setup_hw_state+0x3c5/0xc70 [i915]
 ? drm_modeset_lock_all_ctx+0x9f/0xb0
 intel_modeset_init+0xeb0/0x18e0 [i915]
 ? intel_setup_gmbus+0x2a7/0x310 [i915]
 i915_driver_load+0xa14/0x15d0 [i915]
 i915_pci_probe+0x27/0x40 [i915]
 local_pci_probe+0x40/0xa0
 pci_device_probe+0xb6/0x140
 driver_probe_device+0x224/0x2f0
 __driver_attach+0x96/0xa0
 ? driver_probe_device+0x2f0/0x2f0
 bus_for_each_dev+0x5b/0x90
 driver_attach+0x19/0x20
 bus_add_driver+0x113/0x210
 driver_register+0x5b/0xd0
 __pci_register_driver+0x55/0x60
 i915_init+0x57/0x5a [i915]
 ? 0xffffffffc01cb000
 do_one_initcall+0x3e/0x160
 ? __vunmap+0x7c/0xb0
 ? kfree+0x145/0x160
 ? kmem_cache_alloc_trace+0x33/0x150
 do_init_module+0x5a/0x1f1
 load_module+0x234a/0x28f0
 ? kernel_read_file+0x15b/0x180
 SYSC_finit_module+0xba/0xc0
 ? SYSC_finit_module+0xba/0xc0
 SyS_finit_module+0x9/0x10
 entry_SYSCALL_64_fastpath+0x13/0x94
RIP: 0033:0x7f750f031259
RSP: 002b:00007ffd770af4e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000139
RAX: ffffffffffffffda RBX: 00007f750f2e6b58 RCX: 00007f750f031259
RDX: 0000000000000000 RSI: 000055bbe8276439 RDI: 0000000000000003
RBP: 000000000000270e R08: 0000000000000000 R09: 00007f750f2e8ea0
R10: 0000000000000003 R11: 0000000000000206 R12: 0000000000001020
R13: 00007f750f2e6b58 R14: 000055bbe84831e0 R15: 00007f750f2e6b00
Code:  Bad RIP value.
RIP:           (null) RSP: ffffbb1b01b179f0
CR2: 0000000000000000
---[ end trace aacdac258098f6e1 ]---
insmod (999) used greatest stack depth: 12736 bytes left

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