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RADV: consistent crash in Splitgate

Description

In the game Splitgate (https://store.steampowered.com/app/677620/Splitgate/), loading one specific map (Oasis) while using the RADV driver causes the game to crash and prompt a generic bug report window.

The game uses Unreal Engine 4 and the crash was observed on the native Linux version (which has a Vulkan backend).

The crash does not happen when I switch to AMDVLK, and other people with Nvidia cards have reported being able to play the game without issues.

Log files (for system lockups / game freezes / crashes)

Crash report from the game: crashinfo-PortalWars-pid-2251-F992B401044B473AA7F55DF591A01641.tar.gz

Nothing of note in dmesg.

Steps to reproduce

Start the game (it's free on Steam), go to the "Training" menu and start a race on the map "Oasis". The game should crash right after the loading screen.

System information

  • OS: Arch Linux
  • GPU: RX6800 (RDNA2)
  • Kernel version: 5.13.13-arch1-1
  • Mesa version: tried 21.2.1 and latest commit 5610b584
  • Desktop environment: KDE Plasma
  • Xserver version: 1.20.13

Further information (optional)

Does the issue reproduce with the LLVM backend (RADV_DEBUG=llvm) or on the AMDGPU-PRO drivers? Still crashed with RADV_DEBUG=llvm, but doesn't crash with AMDVLK. Haven't tested AMDGPU-PRO.

Does your environment set any of the variables ACO_DEBUG, RADV_DEBUG, and RADV_PERFTEST? No

Edited by Robin Lange
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