DEBUG: Running: ['x86_64-cros-linux-gnu-gdb', '--quiet', '--eval-command=set sysroot /build/grunt', '--eval-command=set solib-absolute-prefix /build/grunt', '--eval-command=set solib-search-path /build/grunt', '--eval-command=set debug-file-directory /build/grunt/usr/lib/debug', '--eval-command=set prompt (grunt-gdb) ', '--eval-command=target extended-remote | ssh -p 22 -oBatchMode=yes -oProtocol=2 -oConnectTimeout=30 -oLogLevel=QUIET -oServerAliveCountMax=3 -oServerAliveInterval=10 -oConnectionAttempts=4 -oCheckHostIP=no -oUserKnownHostsFile=/dev/null -oStrictHostKeyChecking=no -oNumberOfPasswordPrompts=0 -oIdentitiesOnly=yes -i /tmp/ssh-tmpEM_x3l/testing_rsa root@100.107.108.187 -- gdbserver --multi stdio']
GNU gdb (Chromium OS 8.0.1.20180501 vanilla) 8.0.1
Copyright (C) 2017 Free Software Foundation, Inc.
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Remote debugging using | ssh -p 22 -oBatchMode=yes -oProtocol=2 -oConnectTimeout=30 -oLogLevel=QUIET -oServerAliveCountMax=3 -oServerAliveInterval=10 -oConnectionAttempts=4 -oCheckHostIP=no -oUserKnownHostsFile=/dev/null -oStrictHostKeyChecking=no -oNumberOfPasswordPrompts=0 -oIdentitiesOnly=yes -i /tmp/ssh-tmpEM_x3l/testing_rsa root@100.107.108.187 -- gdbserver --multi stdio
Remote debugging using stdio
(grunt-gdb) set remote exec-file /bin/bash
(grunt-gdb) run
Starting program:  
Process /bin/bash created; pid = 14564
stdin/stdout redirected
Reading symbols from /build/grunt/bin/bash...(no debugging symbols found)...done.
thread.c:1005: internal-error: int is_thread_state(ptid_t, enum thread_state): Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Quit this debugging session? (y or n) y

This is a bug, please report it.  For instructions, see:
<http://crbug.com/new>.

thread.c:1005: internal-error: int is_thread_state(ptid_t, enum thread_state): Assertion `tp' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.
Create a core file of GDB? (y or n) y
Aborted



Not actually sure if this is a cros issue, but it told me to file a bug :)