backtrace

[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[New Thread 0x7ffff7fa1200 (LWP 20549)]
[S_API FAIL] SteamAPI_Init() failed; SteamAPI_IsSteamRunning() failed.
[S_API FAIL] SteamAPI_Init() failed; unable to locate a running instance of Steam, or a local steamclient.so.
[New Thread 0x7fffe95a7700 (LWP 20635)]
[New Thread 0x7ffff1f0b700 (LWP 20647)]
[New Thread 0x7ffff1eca700 (LWP 20648)]
[New Thread 0x7ffff1e89700 (LWP 20649)]
[New Thread 0x7fffef2e9700 (LWP 20650)]
[New Thread 0x7fffef2a8700 (LWP 20651)]
[New Thread 0x7fffef267700 (LWP 20652)]
[New Thread 0x7fffef226700 (LWP 20653)]
[New Thread 0x7fffcfdbb700 (LWP 20700)]
[New Thread 0x7fffcf5ba700 (LWP 20701)]
[Thread 0x7fffcf5ba700 (LWP 20701) exited]
[New Thread 0x7fffcedb9700 (LWP 20721)]
[New Thread 0x7fffcf5ba700 (LWP 20722)]
[Thread 0x7fffcf5ba700 (LWP 20722) exited]
[New Thread 0x7fffcf5ba700 (LWP 20738)]
[New Thread 0x7fffef1e5700 (LWP 20739)]
[New Thread 0x7fffef1d9700 (LWP 20740)]
[New Thread 0x7fffcc7f5700 (LWP 20741)]
[New Thread 0x7fffef1b7700 (LWP 20785)]
[New Thread 0x7fffd0790700 (LWP 20795)]
[New Thread 0x7fffd065e700 (LWP 20820)]
[New Thread 0x7fffae9fc700 (LWP 20821)]
[Thread 0x7fffae9fc700 (LWP 20821) exited]
[New Thread 0x7fffcc474700 (LWP 20822)]
[New Thread 0x7fffad6bf700 (LWP 20832)]
[New Thread 0x7fffac42e700 (LWP 20833)]
[New Thread 0x7fffae9fc700 (LWP 20834)]
[New Thread 0x7fff95b5f700 (LWP 20835)]
[New Thread 0x7fff8bfff700 (LWP 20847)]
[New Thread 0x7fff8b7fe700 (LWP 20848)]
[New Thread 0x7fff8affd700 (LWP 20849)]
[New Thread 0x7fffad8ef700 (LWP 21112)]
[New Thread 0x7fff94f1b700 (LWP 21113)]
[Thread 0x7fff94f1b700 (LWP 21113) exited]
[New Thread 0x7fffad89e700 (LWP 21156)]
[New Thread 0x7fff94f1b700 (LWP 21157)]
[Thread 0x7fff94f1b700 (LWP 21157) exited]
[New Thread 0x7fff894e5700 (LWP 21374)]
[New Thread 0x7fff894a4700 (LWP 21375)]
[New Thread 0x7fff89463700 (LWP 21376)]
[New Thread 0x7fff89422700 (LWP 21377)]
[New Thread 0x7fff893e1700 (LWP 21378)]
[New Thread 0x7fff893a0700 (LWP 21379)]
[New Thread 0x7fff8935f700 (LWP 21380)]
[New Thread 0x7fff8931e700 (LWP 21381)]
[New Thread 0x7fff892dd700 (LWP 21382)]
[New Thread 0x7fff8929c700 (LWP 21383)]
[New Thread 0x7fff8925b700 (LWP 21384)]
[New Thread 0x7fff8921a700 (LWP 21385)]
[New Thread 0x7fff891d9700 (LWP 21386)]
[New Thread 0x7fff89198700 (LWP 21387)]
[New Thread 0x7fff89157700 (LWP 21388)]
[New Thread 0x7fff89116700 (LWP 21389)]
[New Thread 0x7fff9400b200 (LWP 21392)]
context mis-match in pipe_sampler_view_release()
[Thread 0x7fff8925b700 (LWP 21384) exited]
[Thread 0x7fff89116700 (LWP 21389) exited]
[Thread 0x7fff89157700 (LWP 21388) exited]
[Thread 0x7fff89198700 (LWP 21387) exited]
[Thread 0x7fff891d9700 (LWP 21386) exited]
[Thread 0x7fff8921a700 (LWP 21385) exited]
[Thread 0x7fff8929c700 (LWP 21383) exited]
[Thread 0x7fff892dd700 (LWP 21382) exited]
[Thread 0x7fff8931e700 (LWP 21381) exited]
[Thread 0x7fff8935f700 (LWP 21380) exited]
[Thread 0x7fff893a0700 (LWP 21379) exited]
[Thread 0x7fff893e1700 (LWP 21378) exited]
[Thread 0x7fff89422700 (LWP 21377) exited]
[Thread 0x7fff89463700 (LWP 21376) exited]
[Thread 0x7fff894a4700 (LWP 21375) exited]
[Thread 0x7fff894e5700 (LWP 21374) exited]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffef226700 (LWP 20653)]
0x00007ffff2497eda in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
(gdb) bt
#0  0x00007ffff2497eda in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#1  0x00007ffff2497dea in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#2  0x00007ffff2497dea in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#3  0x00007ffff2497dea in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#4  0x00007ffff2497dea in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#5  0x00007ffff2498f00 in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#6  0x00007ffff2497dea in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#7  0x00007ffff249902b in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#8  0x00007ffff249902b in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#9  0x00007ffff24acbf7 in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#10 0x00007ffff2483c87 in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#11 0x00007ffff25755fd in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#12 0x00007ffff24afd54 in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#13 0x00007ffff24b6a77 in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#14 0x00007ffff24d46da in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#15 0x00007ffff23a99ef in ?? () from /usr/lib/xorg/modules/dri/radeonsi_dri.so
#16 0x0000000001872edf in ?? ()
#17 0x0000000000ebf1d4 in ?? ()
#18 0x00000000010aae90 in ?? ()
#19 0x00000000008995b4 in ?? ()
#20 0x000000000089a469 in ?? ()
#21 0x0000000000b8e776 in ?? ()
#22 0x0000000000ba7dd2 in ?? ()
---Type <return> to continue, or q <return> to quit---
#23 0x0000000000c0b707 in ?? ()
#24 0x0000000000db43c8 in ?? ()
#25 0x00007ffff7bc54a4 in start_thread () from /usr/lib/libpthread.so.0
#26 0x00007ffff646413d in clone () from /usr/lib/libc.so.6