coredumpctl --debugger=gdb debug chromium
           PID: 2059 (chromium)
           UID: 1000 (matthew)
           GID: 1000 (matthew)
        Signal: 5 (TRAP)
     Timestamp: Sat 2019-09-28 23:22:15 EDT (42min ago)
  Command Line: /usr/lib/chromium/chromium --type=gpu-process --field-trial-handle=3714136665089029103,16271078862920843720,131072 --gpu-preferences=KAAAAAAAAAAgAAAgAAAAAAAAYAAAAAAAEAAAAAAAAAAAAAAAAAAAAAgAAAAAAAAA --service-request-channel-token=10620529549148616352
    Executable: /usr/lib/chromium/chromium
 Control Group: /user.slice/user-1000.slice/session-1.scope
          Unit: session-1.scope
         Slice: user-1000.slice
       Session: 1
     Owner UID: 1000 (matthew)
       Boot ID: efe0fa97269042df9b3654de18f3e467
    Machine ID: 3c84a831bd6c4756806007a88982cb89
      Hostname: archangel
       Storage: /var/lib/systemd/coredump/core.chromium.1000.efe0fa97269042df9b3654de18f3e467.2059.1569727335000000000000.lz4
       Message: Process 2059 (chromium) of user 1000 dumped core.
                
                Stack trace of thread 2059:
                #0  0x000055dca85611da n/a (chromium)
                #1  0x000055dca8580313 n/a (chromium)
                #2  0x000055dca8604a94 calloc (chromium)
                #3  0x00007fb658c2d33a n/a (i965_dri.so)
                #4  0x00007fb658721ca7 n/a (i965_dri.so)
                #5  0x00007fb6587901ff n/a (i965_dri.so)
                #6  0x00007fb6597608bd n/a (libGLX_mesa.so.0)
                #7  0x00007fb65974d259 n/a (libGLX_mesa.so.0)
                #8  0x00007fb659748d35 n/a (libGLX_mesa.so.0)
                #9  0x00007fb6597492ae n/a (libGLX_mesa.so.0)
                #10 0x000055dca8f1b72e n/a (chromium)
                #11 0x000055dca8f17648 n/a (chromium)
                #12 0x000055dca8f162b8 n/a (chromium)
                #13 0x000055dca8f15dd8 n/a (chromium)
                #14 0x000055dca8f16eb3 n/a (chromium)
                #15 0x000055dca8f241a8 n/a (chromium)
                #16 0x000055dca8f1f3f3 n/a (chromium)
                #17 0x000055dca8f1f502 n/a (chromium)
                #18 0x000055dca9675d82 n/a (chromium)
                #19 0x000055dcac42f16b n/a (chromium)
                #20 0x000055dca8126cda n/a (chromium)
                #21 0x000055dca8149a10 n/a (chromium)
                #22 0x000055dca8125e51 n/a (chromium)
                #23 0x000055dca5f90e4e ChromeMain (chromium)
                #24 0x00007fb660cb3ee3 __libc_start_main (libc.so.6)
                #25 0x000055dca5d6702e _start (chromium)
                
                Stack trace of thread 2066:
                #0  0x00007fb66543777c pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0)
                #1  0x000055dca8600abd n/a (chromium)
                #2  0x000055dca860109a n/a (chromium)
                #3  0x000055dca860126e n/a (chromium)
                #4  0x000055dca8564a9c n/a (chromium)
                #5  0x000055dca85acf3f n/a (chromium)
                #6  0x000055dca8584d66 n/a (chromium)
                #7  0x000055dca85c81dc n/a (chromium)
                #8  0x000055dca8603e69 n/a (chromium)
                #9  0x00007fb66543157f start_thread (libpthread.so.0)
                #10 0x00007fb660d890e3 __clone (libc.so.6)

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Reading symbols from /usr/lib/chromium/chromium...
(No debugging symbols found in /usr/lib/chromium/chromium)
[New LWP 2059]
[New LWP 2066]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".
Core was generated by `/usr/lib/chromium/chromium --type=gpu-process --field-trial-handle=371413666508'.
Program terminated with signal SIGTRAP, Trace/breakpoint trap.
#0  0x000055dca85611da in ?? ()
[Current thread is 1 (Thread 0x7fb65a42b1c0 (LWP 2059))]
(gdb) bt
#0  0x000055dca85611da in  ()
#1  0x00007fb66544a490 in  () at /usr/lib/libdl.so.2
#2  0x00007ffdaf3da3a0 in  ()
#3  0x000026ee9388d168 in  ()
#4  0x0000000060dc43d9 in  ()
#5  0x00007ffdaf3da340 in  ()
#6  0x00007ffdaf3da24c in  ()
#7  0x000026ee9388d168 in  ()
#8  0x3530325bbedead01 in  ()
#9  0x303a393530323a39 in  ()
#10 0x323233322f383239 in  ()
#11 0x35303834312e3531 in  ()
#12 0x3a4c415441463a34 in  ()
#13 0x6c5f79726f6d656d in  ()
#14 0x2863632e78756e69 in  ()
#15 0x74754f205d293234 in  ()
#16 0x6f6d656d20666f20 in  ()
#17 0x00007f000a2e7972 in  ()
#18 0x00007fb659775bea in  () at /usr/lib/libGLX_mesa.so.0
#19 0x1e7f8645ad78f4d2 in  ()
#20 0x1ee819866e5cf4d2 in  ()
#21 0x0000000000000000 in  ()
(gdb)