Intel P4600/P4700: Crash in vt_kms_postswich() under heavy system load

[baitisj]

• VirtualBox / Windows 10 guest OS
• SNA acceleration
• Maximum system load

Just using the VM. Nothing special, really.

Result:

vt_kms_postswitch() at vt_kms_postswitch+0x48/frame 0xfffffe005c3ee4b0 vt_window_switch() at vt_window_switch+0x145/frame 0xfffffe085c3ee50 vtterm_cngrab() at vtterm_cngrab+0x20/frame 0xffffffe085c3ee520 cngrab() at cngrab+0x32/frame 0xfffffe085c3ee540 vpanic()... panic()... vm_radix_insert()... vm_page_alloc() vm_fault_hold() vm_fault()

Xorg.0.log:

[ 278.803] X.Org X Server 1.18.4 Release Date: 2016-07-19 [ 278.803] X Protocol Version 11, Revision 0 [ 278.803] Build Operating System: FreeBSD 12.0-CURRENT amd64 [ 278.804] Current Operating System: FreeBSD raid.baitis.home 12.0-CURRENT FreeBSD 12.0-CURRENT #14 1717ae3(drm-next-4.7): Fri Oct 28 13:49:49 UTC 2016 root@gauntlet:/usr/obj/usr/src/sys/GENERIC amd64 [ 278.804] Build Date: 27 October 2016 03:26:29PM [ 278.804]
[ 278.804] Current version of pixman: 0.34.0 [ 278.804] Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. [ 278.804] Markers: (--) probed, () from config file, (==) default setting, (++) from command line, (!!) notice, (II) informational, (WW) warning, (EE) error, (NI) not implemented, (??) unknown. [ 278.804] (==) Log file: "/var/log/Xorg.0.log", Time: Fri Dec 9 11:17:59 2016 [ 278.804] (==) Using system config directory "/usr/local/share/X11/xorg.conf.d" [ 278.804] (==) No Layout section. Using the first Screen section. [ 278.804] (==) No screen section available. Using defaults. [ 278.804] () |-->Screen "Default Screen Section" (0) [ 278.804] (*) | |-->Monitor "" [ 278.804] (==) No monitor specified for screen "Default Screen Section". Using a default monitor configuration. [ 278.804] (==) Automatically adding devices [ 278.804] (==) Automatically enabling devices [ 278.804] (==) Not automatically adding GPU devices [ 278.804] (==) Max clients allowed: 256, resource mask: 0x1fffff [ 278.804] (==) FontPath set to: /usr/local/share/fonts/misc/, /usr/local/share/fonts/TTF/, /usr/local/share/fonts/OTF/, /usr/local/share/fonts/Type1/, /usr/local/share/fonts/100dpi/, /usr/local/share/fonts/75dpi/ [ 278.804] (==) ModulePath set to "/usr/local/lib/xorg/modules" [ 278.804] (II) The server relies on devd to provide the list of input devices. If no devices become available, reconfigure devd or disable AutoAddDevices. [ 278.805] (II) Loader magic: 0x811b10 [ 278.805] (II) Module ABI versions: [ 278.805] X.Org ANSI C Emulation: 0.4 [ 278.805] X.Org Video Driver: 20.0 [ 278.805] X.Org XInput driver : 22.1 [ 278.805] X.Org Server Extension : 9.0 [ 278.805] (--) PCI:(0:0:2:0) 8086:041a:1028:0620 rev 6, Mem @ 0xf7800000/4194304, 0xe0000000/268435456, I/O @ 0x0000f000/64, BIOS @ 0x????????/65536 [ 278.805] (II) LoadModule: "glx" [ 278.805] (II) Loading /usr/local/lib/xorg/modules/extensions/libglx.so [ 278.808] (II) Module glx: vendor="NVIDIA Corporation" [ 278.808] compiled for 4.0.2, module version = 1.0.0 [ 278.808] Module class: X.Org Server Extension [ 278.808] (II) NVIDIA GLX Module 367.44 Wed Aug 17 22:01:17 PDT 2016 [ 278.808] (==) Matched intel as autoconfigured driver 0 [ 278.808] (==) Matched fbdev as autoconfigured driver 1 [ 278.808] (==) Matched vesa as autoconfigured driver 2 [ 278.808] (==) Assigned the driver to the xf86ConfigLayout [ 278.808] (II) LoadModule: "intel" [ 278.808] (II) Loading /usr/local/lib/xorg/modules/drivers/intel_drv.so [ 278.808] (II) Module intel: vendor="X.Org Foundation" [ 278.808] compiled for 1.18.4, module version = 2.99.917 [ 278.808] Module class: X.Org Video Driver [ 278.808] ABI class: X.Org Video Driver, version 20.0 [ 278.808] (II) LoadModule: "fbdev" [ 278.809] (WW) Warning, couldn't open module fbdev [ 278.809] (II) UnloadModule: "fbdev" [ 278.809] (II) Unloading fbdev [ 278.809] (EE) Failed to load module "fbdev" (module does not exist, 0) [ 278.809] (II) LoadModule: "vesa" [ 278.809] (II) Loading /usr/local/lib/xorg/modules/drivers/vesa_drv.so [ 278.809] (II) Module vesa: vendor="X.Org Foundation" [ 278.809] compiled for 1.18.4, module version = 2.3.4 [ 278.809] Module class: X.Org Video Driver [ 278.809] ABI class: X.Org Video Driver, version 20.0 [ 278.809] (II) intel: Driver for Intel(R) Integrated Graphics Chipsets: i810, i810-dc100, i810e, i815, i830M, 845G, 854, 852GM/855GM, 865G, 915G, E7221 (i915), 915GM, 945G, 945GM, 945GME, Pineview GM, Pineview G, 965G, G35, 965Q, 946GZ, 965GM, 965GME/GLE, G33, Q35, Q33, GM45, 4 Series, G45/G43, Q45/Q43, G41, B43 [ 278.809] (II) intel: Driver for Intel(R) HD Graphics: 2000-6000 [ 278.809] (II) intel: Driver for Intel(R) Iris(TM) Graphics: 5100, 6100 [ 278.809] (II) intel: Driver for Intel(R) Iris(TM) Pro Graphics: 5200, 6200, P6300 [ 278.809] (II) VESA: driver for VESA chipsets: vesa [ 278.809] (--) Using syscons driver with X support (version 16777218.0) [ 278.809] (--) using VT number 9

[ 278.810] (II) intel(0): Using Kernel Mode Setting driver: i915, version 1.6.0 20160425 [ 278.810] (WW) Falling back to old probe method for vesa [ 278.810] (WW) VGA arbiter: cannot open kernel arbiter, no multi-card support [ 278.811] (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics P4600/P4700 [ 278.811] (--) intel(0): CPU: x86-64, sse2, sse3, ssse3, sse4.1, sse4.2, avx, avx2; using a maximum of 2 threads [ 278.811] (II) intel(0): Creating default Display subsection in Screen section "Default Screen Section" for depth/fbbpp 24/32 [ 278.811] (==) intel(0): Depth 24, (--) framebuffer bpp 32 [ 278.811] (==) intel(0): RGB weight 888 [ 278.811] (==) intel(0): Default visual is TrueColor [ 278.811] (II) intel(0): Output VGA1 has no monitor section [ 278.811] (II) intel(0): Enabled output VGA1 [ 278.811] (II) intel(0): Output DP1 has no monitor section [ 278.811] (II) intel(0): Enabled output DP1 [ 278.811] (II) intel(0): Output HDMI1 has no monitor section [ 278.811] (II) intel(0): Enabled output HDMI1 [ 278.811] (II) intel(0): Output DP2 has no monitor section [ 278.811] (II) intel(0): Enabled output DP2 [ 278.811] (II) intel(0): Output HDMI2 has no monitor section [ 278.811] (II) intel(0): Enabled output HDMI2 [ 278.811] (--) intel(0): Using a maximum size of 256x256 for hardware cursors [ 278.811] (II) intel(0): Output VIRTUAL1 has no monitor section [ 278.811] (II) intel(0): Enabled output VIRTUAL1 [ 278.811] (--) intel(0): Output DP1 using initial mode 2560x1080 on pipe 0 [ 278.811] (==) intel(0): TearFree disabled [ 278.811] (==) intel(0): DPI set to (96, 96) [ 278.811] (II) Loading sub module "dri2" [ 278.811] (II) LoadModule: "dri2" [ 278.811] (II) Module "dri2" already built-in [ 278.811] (II) Loading sub module "present" [ 278.811] (II) LoadModule: "present" [ 278.811] (II) Module "present" already built-in [ 278.811] (II) UnloadModule: "vesa" [ 278.811] (II) Unloading vesa [ 278.811] (==) Depth 24 pixmap format is 32 bpp [ 278.812] (II) intel(0): SNA initialized with Haswell (gen7.5, gt2) backend [ 278.812] (==) intel(0): Backing store enabled [ 278.812] (==) intel(0): Silken mouse enabled [ 278.812] (II) intel(0): HW Cursor enabled [ 278.812] (II) intel(0): RandR 1.2 enabled, ignore the following RandR disabled message. [ 278.812] (==) intel(0): DPMS enabled [ 278.812] (II) intel(0): [DRI2] Setup complete [ 278.812] (II) intel(0): [DRI2] DRI driver: i965 [ 278.812] (II) intel(0): [DRI2] VDPAU driver: va_gl [ 278.812] (II) intel(0): direct rendering: DRI2 enabled [ 278.812] (II) intel(0): hardware support for Present enabled [ 278.812] (--) RandR disabled [ 278.812] (EE) Failed to initialize GLX extension (Compatible NVIDIA X driver not found) [ 278.814] (II) intel(0): switch to mode 2560x1080@60.0 on DP1 using pipe 0, position (0, 0), rotation normal, reflection none [ 278.814] (II) intel(0): Setting screen physical size to 677 x 285 [ 278.876] (II) config/devd: probing input devices... [ 278.876] (II) config/devd: adding input device (null) (/dev/kbdmux) [ 278.876] (II) LoadModule: "kbd" [ 278.876] (II) Loading /usr/local/lib/xorg/modules/input/kbd_drv.so [ 278.876] (II) Module kbd: vendor="X.Org Foundation" [ 278.876] compiled for 1.18.4, module version = 1.8.1 [ 278.876] Module class: X.Org XInput Driver [ 278.876] ABI class: X.Org XInput driver, version 22.1 [ 278.876] (II) Using input driver 'kbd' for 'kbdmux' [ 278.876] () kbdmux: always reports core events [ 278.876] () kbdmux: always reports core events [ 278.876] () Option "Protocol" "standard" [ 278.876] () Option "XkbRules" "base" [ 278.877] () Option "XkbModel" "pc105" [ 278.877] () Option "XkbLayout" "us" [ 278.877] () Option "config_info" "devd:kbdmux" [ 278.877] (II) XINPUT: Adding extended input device "kbdmux" (type: KEYBOARD, id 6) [ 278.877] (II) config/devd: kbdmux is enabled, ignoring device ukbd0 [ 278.877] (II) config/devd: kbdmux is enabled, ignoring device atkbd0 [ 278.877] (II) config/devd: adding input device (null) (/dev/sysmouse) [ 278.877] (II) LoadModule: "mouse" [ 278.877] (II) Loading /usr/local/lib/xorg/modules/input/mouse_drv.so [ 278.877] (II) Module mouse: vendor="X.Org Foundation" [ 278.877] compiled for 1.18.4, module version = 1.9.1 [ 278.877] Module class: X.Org XInput Driver [ 278.877] ABI class: X.Org XInput driver, version 22.1 [ 278.877] (II) Using input driver 'mouse' for 'sysmouse' [ 278.877] () sysmouse: always reports core events [ 278.877] () Option "Device" "/dev/sysmouse" [ 278.877] (==) sysmouse: Protocol: "Auto" [ 278.877] () sysmouse: always reports core events [ 278.877] (==) sysmouse: Emulate3Buttons, Emulate3Timeout: 50 [ 278.877] () sysmouse: ZAxisMapping: buttons 4 and 5 [ 278.877] () sysmouse: Buttons: 5 [ 278.877] () Option "config_info" "devd:sysmouse" [ 278.877] (II) XINPUT: Adding extended input device "sysmouse" (type: MOUSE, id 7) [ 278.877] () sysmouse: (accel) keeping acceleration scheme 1 [ 278.877] () sysmouse: (accel) acceleration profile 0 [ 278.877] () sysmouse: (accel) acceleration factor: 2.000 [ 278.877] (**) sysmouse: (accel) acceleration threshold: 4 [ 278.877] (II) sysmouse: SetupAuto: hw.iftype is 4, hw.model is 0 [ 278.877] (II) sysmouse: SetupAuto: protocol is SysMouse [ 278.877] (II) config/devd: device /dev/ums0 already opened [ 278.903] (II) intel(0): EDID vendor "GSM", prod id 23026 [ 278.903] (II) intel(0): Using EDID range info for horizontal sync [ 278.903] (II) intel(0): Using EDID range info for vertical refresh [ 278.903] (II) intel(0): Printing DDC gathered Modelines: [ 278.903] (II) intel(0): Modeline "2560x1080"x0.0 185.58 2560 2624 2688 2784 1080 1083 1093 1111 -hsync -vsync (66.7 kHz eP) [ 278.903] (II) intel(0): Modeline "1920x1080"x0.0 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync -vsync (67.5 kHz e) [ 278.903] (II) intel(0): Modeline "1920x1080"x0.0 148.50 1920 2008 2052 2200 1080 1084 1089 1125 +hsync +vsync (67.5 kHz e) [ 278.903] (II) intel(0): Modeline "1920x1080i"x0.0 74.25 1920 2008 2052 2200 1080 1084 1094 1125 interlace +hsync +vsync (33.8 kHz e) [ 278.903] (II) intel(0): Modeline "1280x720"x0.0 74.25 1280 1390 1430 1650 720 725 730 750 +hsync +vsync (45.0 kHz e) [ 278.903] (II) intel(0): Modeline "720x480"x0.0 27.00 720 736 798 858 480 489 495 525 -hsync -vsync (31.5 kHz e) [ 278.903] (II) intel(0): Modeline "800x600"x0.0 40.00 800 840 968 1056 600 601 605 628 +hsync +vsync (37.9 kHz e) [ 278.903] (II) intel(0): Modeline "640x480"x0.0 31.50 640 656 720 840 480 481 484 500 -hsync -vsync (37.5 kHz e) [ 278.903] (II) intel(0): Modeline "640x480"x0.0 25.18 640 656 752 800 480 490 492 525 -hsync -vsync (31.5 kHz e) [ 278.903] (II) intel(0): Modeline "720x400"x0.0 28.32 720 738 846 900 400 412 414 449 -hsync +vsync (31.5 kHz e) [ 278.903] (II) intel(0): Modeline "1280x1024"x0.0 135.00 1280 1296 1440 1688 1024 1025 1028 1066 +hsync +vsync (80.0 kHz e) [ 278.903] (II) intel(0): Modeline "1024x768"x0.0 78.75 1024 1040 1136 1312 768 769 772 800 +hsync +vsync (60.0 kHz e) [ 278.903] (II) intel(0): Modeline "1024x768"x0.0 65.00 1024 1048 1184 1344 768 771 777 806 -hsync -vsync (48.4 kHz e) [ 278.903] (II) intel(0): Modeline "800x600"x0.0 49.50 800 816 896 1056 600 601 604 625 +hsync +vsync (46.9 kHz e) [ 278.903] (II) intel(0): Modeline "1152x864"x0.0 108.00 1152 1216 1344 1600 864 865 868 900 +hsync +vsync (67.5 kHz e) [ 278.903] (II) intel(0): Modeline "1280x1024"x0.0 108.00 1280 1328 1440 1688 1024 1025 1028 1066 +hsync +vsync (64.0 kHz e) [ 278.903] (II) intel(0): Modeline "1280x720"x60.0 74.48 1280 1336 1472 1664 720 721 724 746 -hsync +vsync (44.8 kHz e) [ 278.903] (II) intel(0): Modeline "1600x900"x60.0 119.00 1600 1696 1864 2128 900 901 904 932 -hsync +vsync (55.9 kHz e) [ 278.903] (II) intel(0): Modeline "1680x1050"x0.0 146.25 1680 1784 1960 2240 1050 1053 1059 1089 -hsync +vsync (65.3 kHz e) [ 278.903] (II) intel(0): Modeline "720x576"x0.0 27.00 720 732 796 864 576 581 586 625 -hsync -vsync (31.2 kHz e) [ 278.903] (II) intel(0): Modeline "1440x576i"x0.0 27.00 1440 1464 1590 1728 576 580 586 625 interlace -hsync -vsync (15.6 kHz e) [ 278.903] (II) intel(0): Modeline "1280x720"x0.0 74.25 1280 1720 1760 1980 720 725 730 750 +hsync +vsync (37.5 kHz e) [ 278.903] (II) intel(0): Modeline "1440x480i"x0.0 27.00 1440 1478 1602 1716 480 488 494 525 interlace -hsync -vsync (15.7 kHz e) [ 278.903] (II) intel(0): Modeline "1920x1080"x0.0 74.25 1920 2558 2602 2750 1080 1084 1089 1125 +hsync +vsync (27.0 kHz e) [ 278.903] (II) intel(0): Modeline "1920x1080i"x0.0 74.25 1920 2448 2492 2640 1080 1084 1094 1125 interlace +hsync +vsync (28.1 kHz e)

[valpackett]

Software graphics rendering

Your log actually mentions running SNA on Haswell.

[ 278.812] (II) intel(0): SNA initialized with Haswell (gen7.5, gt2) backend

I'm running SNA on Haswell too, and I got this crash a few times. I don't think it's related to load??

• got it some time (a significant amount of time!) after the sway Wayland compositor unkillably froze into a kqflx state
• got it when making a screenshot with maim
• got it when i was experimenting with starting compiz/emerald

[valpackett]

Here's a couple screens. Interestingly, on one of them the postswitch error is combined with a page fault (#96??). The other one involves assfail3 which uh… looks like the linux graphics stack is a total ass fail :D

[mattmacy]

FYI, postswitch means nothing by itself - it's what the driver calls to switch to console on panic. Blaming it is like blaming panic.

[mattmacy]

Assfail3 is in the Solaris layer. It's either a bug in ZFS or a memory corruption.

[valpackett]

Yeah it might be that the graphics driver is corrupting memory…

[mattmacy]

Precisely. Not fun to track down.

[baitisj]

Thanks for clarifying wrt SNA; fixing original report

[valpackett]

woah this was a commit that refers to the same issue number in a different repo probably (the openzfs repo?)

[markjdb]

Heh. :)

Is this still an issue? There have been many fixes for various memory management issues since the last comment here.

[valpackett]

yeah I haven't seen these crashes recently. though I wasn't using my laptop as often…

[baitisj]

No issues for quite some time. Closing.