Game crashes on launch on Arch Linux, after attempting to free invalid pointer

[TheConfuZzledDude]

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Your system information

• System information from steam (Steam -> Help -> System Information) in a gist: https://gist.github.com/TheConfuZzledDude/4aeb036863abcb1d18df1e911f0d1372
• Have you checked for system updates?: Yes
• Are you using the latest stable video driver available for your system? Yes
• Have you verified the game files?: Yes

Please describe your issue in as much detail as possible:

Game crashes on launch on Linux, after attempting to free invalid pointer Terminal log: https://gist.github.com/TheConfuZzledDude/ff28de1d47f19f67866d162a7281ee51 Minidump (tarred+gz): crashminidump.tar.gz

Steps for reproducing this issue:

1. Launch the game

[kisak-valve]

Hello @TheConfuZzledDude, this reads like #1999. Are you able to tell if Dota 2 is running on the AMDGPU-Pro or mesa/RADV driver and can you test if the same issue happens with the other driver?

[headlesscyborg]

Hi, I probably face the same issue, started happening after the new update (7.31, new hero etc., don't even know what it's about because the game doesn't work anymore).

Terminal output: https://pastebin.com/msxFuxfC Steam HW/SW info: https://pastebin.com/LdR5NpVM

Arch Linux, 1660 Ti.

[TheConfuZzledDude]

Hello @TheConfuZzledDude, this reads like #1999. Are you able to tell if Dota 2 is running on the AMDGPU-Pro or mesa/RADV driver and can you test if the same issue happens with the other driver?

I actually was using mesa, but I've been forcing it with a renamed radeon_icd.x86_64.json to aaradeon_icd.x86_64.json to force it to load before AMDGPU-Pro, but it was an old version of it so the api version listed in it was outdated i.e

<         "api_version": "1.3.204",
---
>         "api_version": "1.2.185",

So symlinking it instead has resolved it, working now :)

[icpz]

@kisak-valve I see dota2 bundled libtcmalloc_minimal.so.0 has version 1.7, which uses __memalign_hook that is removed since glibc 2.34 So it can't hook aligned_alloc in the latest glibc, which causes the driver allocates memory from glibc's aligned_alloc but frees it to libtcmalloc's free and then crashes.

[accerqueira]

I got it to work with vulkan by adding VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/radeon_icd.x86_64.json to the environment (export it from ~/.profile or set launch options for dota2: VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/radeon_icd.x86_64.json %command%).

I think the problem happened because I have amdvlk and vulkan-radeon installed. Apparently, amdvlk is not supported by Dota2, and AMD_VULKAN_ICD=RADV is being ignored now, so Dota2 picked amdvlk ICD (/usr/share/vulkan/icd.d/amd_icd64.json) and crashed.

[icpz]

I think the problem happened because I have amdvlk and vulkan-radeon installed. Apparently, amdvlk is not supported by Dota2, and AMD_VULKAN_ICD=RADV is being ignored now, so Dota2 picked amdvlk ICD (/usr/share/vulkan/icd.d/amd_icd64.json) and crashed.

The newer glibc breaks some features (aligned_alloc) in the game bundled libtcmalloc, the features used by amdvlk. RADV doesn't use aligned_alloc so it's not affected.

[presianbg]

Same on Solus with AMDGPU (open source kernel driver):

Steam/steamapps/common/dota 2 beta/game/dota.sh: line 109:  7628 Segmentation fault      (core dumped) ${STEAM_RUNTIME_PREFIX} ${GAME_DEBUGGER} "${GAMEROOT}"/${GAMEEXE} "$@"
crash_20220225225503_2.dmp[7648]: Finished uploading minidump (out-of-process): success = no
crash_20220225225503_2.dmp[7648]: error: Couldn't connect to server
crash_20220225225503_2.dmp[7648]: file ''/tmp/dumps/crash_20220225225503_2.dmp'', upload no: ''Couldn't connect to server''
pid 7648 != 7647, skipping destruction (fork without exec?)

tried all posted workarounds to no avail. Any ideas ?

[cppcooper]

I get the same on mesa. Only when trying to use vulkan though. OpenGL doesn't crash for me. I'd say it works, but I just opened an issue about crazy fps spikes since an update late last week.

[eduardoc25]

In fact, in my case the problem lies with "vulkan-amdgpu-pro"... using radvk doesn't cause the problem... you can uninstall or force radvk over amdvlk as suggested in the previous comments... vulkan just works as expected!...

Greetings

[cppcooper]

I don't know if anyone else is seeing this, but I get this message when I try launching with -vulkan instead of -gl

Attempting to create OpenGL context: v3.3 (Core profile)...success. Checking entry points...success.
src/tcmalloc.cc:390] Attempt to free invalid pointer: 0x556dd3135220

Seems like maybe it's a possible cause for whatever pointer being invalid.

[tommitah]

How would I fix this issue if I'm running nvidia proprietary drivers? From what I understood the issue seems to be that vulkan drivers for AMD gpu's are breaking but I'm running a completely different component. Is there a way to fix this short of checking if the open source drivers use the correct glibc version or something?