Closing SteamVR and restarting VR Session crashes Blender #94268

New Issue

Sybren A. Stüvel · 2021-12-20T15:26:41+01:00

Sybren A. Stüvel commented

2021-12-20 15:26:41 +01:00

System Information
Operating system: Windows-10-10.0.19043-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.13
VR System: Valve Index + SteamVR version 1.20.4 (1634602223).

Blender Version
Broken: version: 3.1.0 Alpha, branch: master, hash: 5adc06d2d8
Worked: never (afaik, tested with 3.0 betas)

Short description of error
Blender crashes when pressing the Start VR Session after an earlier VR session was closed from within SteamVR.

Exact steps for others to reproduce the error

Enable the VR Scene Inspection add-on
Start SteamVR
In Blender, press the Start VR Session button
From within the VR session, press the "system menu" button, and in the SteamVR menu choose "Exit VR". This shuts down all of SteamVR.
In Blender, press the Start VR Session button
Blender crashes.

Exception Info

Exception thrown at 0x00007FF8401AD390 in blender.exe: 0xC0000005: Access violation executing location 0x00007FF8401AD390.

This is on the line

if (r_requirement_info) {

r_requirement_info is just a pointer to a variable on the stack of the calling function. It's not nullptr.

Stack trace
Running a debug build of Blender in VS 2019 produces this stack trace:

blender.exe!GHOST_XrGraphicsBindingD3D::checkVersionRequirements(GHOST_Context & __formal, XrInstance_T * instance, unsigned __int64 system_id, std::string * r_requirement_info) Line 320
	at C:\workspace\blender-git\blender\intern\ghost\intern\GHOST_XrGraphicsBinding.cpp(320)
blender.exe!GHOST_XrSession::start(const GHOST_XrSessionBeginInfo * begin_info) Line 241
	at C:\workspace\blender-git\blender\intern\ghost\intern\GHOST_XrSession.cpp(241)
blender.exe!GHOST_XrContext::startSession(const GHOST_XrSessionBeginInfo * begin_info) Line 520
	at C:\workspace\blender-git\blender\intern\ghost\intern\GHOST_XrContext.cpp(520)
blender.exe!GHOST_XrSessionStart(GHOST_XrContextHandle__ * xr_contexthandle, const GHOST_XrSessionBeginInfo * begin_info) Line 883
	at C:\workspace\blender-git\blender\intern\ghost\intern\GHOST_C-api.cpp(883)
blender.exe!wm_xr_session_toggle(wmWindowManager * wm, wmWindow * session_root_win, void(*)(const wmXrData *) session_exit_fn) Line 156
	at C:\workspace\blender-git\blender\source\blender\windowmanager\xr\intern\wm_xr_session.c(156)
blender.exe!wm_xr_session_toggle_exec(bContext * C, wmOperator * UNUSED_op) Line 144
	at C:\workspace\blender-git\blender\source\blender\windowmanager\xr\intern\wm_xr_operators.c(144)
blender.exe!wm_operator_invoke(bContext * C, wmOperatorType * ot, wmEvent * event, PointerRNA * properties, ReportList * reports, const bool poll_only, bool use_last_properties) Line 1325
	at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(1325)
blender.exe!wm_operator_call_internal(bContext * C, wmOperatorType * ot, PointerRNA * properties, ReportList * reports, const wmOperatorCallContext context, const bool poll_only, wmEvent * event) Line 1520
	at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(1520)
blender.exe!WM_operator_name_call_ptr(bContext * C, wmOperatorType * ot, wmOperatorCallContext context, PointerRNA * properties) Line 1568
	at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(1568)
blender.exe!WM_operator_name_call_ptr_with_depends_on_cursor(bContext * C, wmOperatorType * ot, wmOperatorCallContext opcontext, PointerRNA * properties, const unsigned char * drawstr) Line 1756
	at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(1756)
blender.exe!ui_apply_but_funcs_after(bContext * C) Line 1028
	at C:\workspace\blender-git\blender\source\blender\editors\interface\interface_handlers.c(1028)
blender.exe!ui_handler_region_menu(bContext * C, const wmEvent * event, void * UNUSED_userdata) Line 11381
	at C:\workspace\blender-git\blender\source\blender\editors\interface\interface_handlers.c(11381)
blender.exe!wm_handler_ui_call(bContext * C, wmEventHandler_UI * handler, const wmEvent * event, int always_pass) Line 688
	at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(688)
blender.exe!wm_handlers_do_intern(bContext * C, wmWindow * win, wmEvent * event, ListBase * handlers) Line 3016
	at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(3016)
blender.exe!wm_handlers_do(bContext * C, wmEvent * event, ListBase * handlers) Line 3130
	at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(3130)
blender.exe!wm_event_do_handlers(bContext * C) Line 3618
	at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(3618)
blender.exe!WM_main(bContext * C) Line 642
	at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm.c(642)
blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 565
	at C:\workspace\blender-git\blender\source\creator\creator.c(565)

**System Information** Operating system: Windows-10-10.0.19043-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 2080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.13 VR System: Valve Index + SteamVR version 1.20.4 (1634602223). **Blender Version** Broken: version: 3.1.0 Alpha, branch: master, hash: `5adc06d2d8` Worked: never (afaik, tested with 3.0 betas) **Short description of error** Blender crashes when pressing the Start VR Session after an earlier VR session was closed from within SteamVR. **Exact steps for others to reproduce the error** - Enable the VR Scene Inspection add-on - Start SteamVR - In Blender, press the Start VR Session button - From within the VR session, press the "system menu" button, and in the SteamVR menu choose "Exit VR". This shuts down all of SteamVR. - In Blender, press the Start VR Session button - Blender crashes. **Exception Info** ``` Exception thrown at 0x00007FF8401AD390 in blender.exe: 0xC0000005: Access violation executing location 0x00007FF8401AD390. ``` This is on the line ```lang=cpp ``` if (r_requirement_info) { ``` ``` `r_requirement_info` is just a pointer to a variable on the stack of the calling function. It's not `nullptr`. **Stack trace** Running a debug build of Blender in VS 2019 produces this stack trace: ``` blender.exe!GHOST_XrGraphicsBindingD3D::checkVersionRequirements(GHOST_Context & __formal, XrInstance_T * instance, unsigned __int64 system_id, std::string * r_requirement_info) Line 320 at C:\workspace\blender-git\blender\intern\ghost\intern\GHOST_XrGraphicsBinding.cpp(320) blender.exe!GHOST_XrSession::start(const GHOST_XrSessionBeginInfo * begin_info) Line 241 at C:\workspace\blender-git\blender\intern\ghost\intern\GHOST_XrSession.cpp(241) blender.exe!GHOST_XrContext::startSession(const GHOST_XrSessionBeginInfo * begin_info) Line 520 at C:\workspace\blender-git\blender\intern\ghost\intern\GHOST_XrContext.cpp(520) blender.exe!GHOST_XrSessionStart(GHOST_XrContextHandle__ * xr_contexthandle, const GHOST_XrSessionBeginInfo * begin_info) Line 883 at C:\workspace\blender-git\blender\intern\ghost\intern\GHOST_C-api.cpp(883) blender.exe!wm_xr_session_toggle(wmWindowManager * wm, wmWindow * session_root_win, void(*)(const wmXrData *) session_exit_fn) Line 156 at C:\workspace\blender-git\blender\source\blender\windowmanager\xr\intern\wm_xr_session.c(156) blender.exe!wm_xr_session_toggle_exec(bContext * C, wmOperator * UNUSED_op) Line 144 at C:\workspace\blender-git\blender\source\blender\windowmanager\xr\intern\wm_xr_operators.c(144) blender.exe!wm_operator_invoke(bContext * C, wmOperatorType * ot, wmEvent * event, PointerRNA * properties, ReportList * reports, const bool poll_only, bool use_last_properties) Line 1325 at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(1325) blender.exe!wm_operator_call_internal(bContext * C, wmOperatorType * ot, PointerRNA * properties, ReportList * reports, const wmOperatorCallContext context, const bool poll_only, wmEvent * event) Line 1520 at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(1520) blender.exe!WM_operator_name_call_ptr(bContext * C, wmOperatorType * ot, wmOperatorCallContext context, PointerRNA * properties) Line 1568 at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(1568) blender.exe!WM_operator_name_call_ptr_with_depends_on_cursor(bContext * C, wmOperatorType * ot, wmOperatorCallContext opcontext, PointerRNA * properties, const unsigned char * drawstr) Line 1756 at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(1756) blender.exe!ui_apply_but_funcs_after(bContext * C) Line 1028 at C:\workspace\blender-git\blender\source\blender\editors\interface\interface_handlers.c(1028) blender.exe!ui_handler_region_menu(bContext * C, const wmEvent * event, void * UNUSED_userdata) Line 11381 at C:\workspace\blender-git\blender\source\blender\editors\interface\interface_handlers.c(11381) blender.exe!wm_handler_ui_call(bContext * C, wmEventHandler_UI * handler, const wmEvent * event, int always_pass) Line 688 at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(688) blender.exe!wm_handlers_do_intern(bContext * C, wmWindow * win, wmEvent * event, ListBase * handlers) Line 3016 at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(3016) blender.exe!wm_handlers_do(bContext * C, wmEvent * event, ListBase * handlers) Line 3130 at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(3130) blender.exe!wm_event_do_handlers(bContext * C) Line 3618 at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm_event_system.c(3618) blender.exe!WM_main(bContext * C) Line 642 at C:\workspace\blender-git\blender\source\blender\windowmanager\intern\wm.c(642) blender.exe!main(int argc, const unsigned char * * UNUSED_argv_c) Line 565 at C:\workspace\blender-git\blender\source\creator\creator.c(565) ```

Sybren A. Stüvel commented

2021-12-20 15:26:41 +01:00

Added subscriber: @dr.sybren

Peter Kim commented

2021-12-21 12:12:23 +01:00

Added subscribers: @JulianEisel, @muxed-reality

Peter Kim commented

2021-12-21 12:12:23 +01:00

Thanks for the report. Which SteamVR version are you using?
Unfortunately, I wasn't able to reproduce with SteamVR 1.20.4 and I'm not sure what the underlying issue is.
Maybe @JulianEisel has some idea?

Thanks for the report. Which SteamVR version are you using? Unfortunately, I wasn't able to reproduce with SteamVR 1.20.4 and I'm not sure what the underlying issue is. Maybe @JulianEisel has some idea?

Dalai Felinto commented

2021-12-21 12:16:59 +01:00

Added subscriber: @dfelinto

Sybren A. Stüvel commented

2021-12-21 13:51:14 +01:00

I'm on version 1.20.4 (1634602223).

Peter Kim commented

2022-02-06 06:03:39 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Peter Kim commented

2022-02-06 06:03:39 +01:00

Could finally reproduce this on a Quest 2 (doesn't occur on my Lenovo Explorer WMR headset).
Submitted a fix in D14023.

Could finally reproduce this on a Quest 2 (doesn't occur on my Lenovo Explorer WMR headset). Submitted a fix in [D14023](https://archive.blender.org/developer/D14023).

blender-admin commented

2022-02-11 12:38:22 +01:00

This issue was referenced by 4fbd00e04c

This issue was referenced by 4fbd00e04c00735fdcc135c588b884fbb9b71efc

Peter Kim commented

2022-02-11 12:48:18 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Peter Kim closed this issue

2022-02-11 12:48:18 +01:00

Peter Kim self-assigned this 2022-02-11 12:48:18 +01:00

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Closing SteamVR and restarting VR Session crashes Blender #94268