Similar outcome, but not the same issue as, [LBBS-13]:
Thread 1 (Thread 0x7fc2157f26c0 (LWP 266903)):
#5 0x00005621bc093c46 in __bbs_assert (function=0x5621bc0d3b30 <__func__.9> "__bbs_mutex_lock", line=165, file=0x5621bc0d3118 "lock.c", condition_str=0x5621bc0d318b "0", condition=0) at ../include/bbs.h:427
#6 __bbs_mutex_lock (t=0x7fc224028018, filename=0x5621bc0d7564 "node.c", lineno=1224, func=0x5621bc0d93d0 <__func__.15> "bbs_node_update_winsize", name=0x5621bc0d77f4 "node") at lock.c:165
res = 32706
c = 0
now = 140471912886334
elapsed = 1
start = 0
__func__ = "__bbs_mutex_lock"
#7 0x00005621bc0a60ad in __bbs_node_lock (node=0x7fc224027eb0, file=0x5621bc0d7564 "node.c", lineno=1224, func=0x5621bc0d93d0 <__func__.15> "bbs_node_update_winsize", lockname=0x5621bc0d77f4 "node") at node.c:397
__func__ = "__bbs_node_lock"
#8 0x00005621bc0a95a9 in bbs_node_update_winsize (node=0x7fc224027eb0, cols=230, rows=44) at node.c:1224
ws = {ws_row = 48, ws_col = 0, ws_xpixel = 48, ws_ypixel = 0}
child = 0
oldcols = 232
oldrows = 53
__func__ = "bbs_node_update_winsize"
#9 0x00007fc22a7ebbb3 in pty_resize (session=0x7fc2200c3bd0, channel=0x7fc2240118c0, cols=230, rows=44, py=0, px=0, userdata=0x7fc2157f1cd0) at net_ssh.c:566
cdata = 0x7fc2157f1cd0
#10 0x00007fc22a7927d7 in () at /lib/x86_64-linux-gnu/libssh.so.4
...
#18 0x00007fc22a7a222d in () at /lib/x86_64-linux-gnu/libssh.so.4
#19 0x00007fc22a7a231d in ssh_blocking_flush () at /lib/x86_64-linux-gnu/libssh.so.4
#20 0x00007fc22a7828f5 in ssh_channel_close () at /lib/x86_64-linux-gnu/libssh.so.4
#21 0x00007fc22a7ed218 in handle_session (event=0x7fc22400bc70, session=0x7fc2200c3bd0) at net_ssh.c:1069
ipaddr = "90.250.8.64\000\000\000\000\000\220\316\b$\302\177\000\000p\341v\000\000\000\000\0000\000\000$\302\177\000\000`\212v*\302\177\000\000\000 \377\024\302\177\000\000\242\a\023D\302\177\000"
n = 8
node_started = 1
is_sftp = 0
res = 0
sshfd = 71
timeout = 3600
user = 0x0
wsize = {ws_row = 44, ws_col = 230, ws_xpixel = 0, ws_ypixel = 0}
cdata = {node = 0x7fc224027eb0, user = 0x7fc2157f1d20, nodethread = 140471384790720, pid = 0, pty_master = -1, pty_slave = 74, child_stdin = -1, child_stdout = -1, child_stderr = -1, event = 0x7fc22400bc70, winsize = 0x7fc2157f1d18, closed = 0, userattached = 0, addedfdwatch = 1, sftp = 0}
sdata = {user = 0x7fc2157f1d20, channel = 0x7fc224004e40, auth_attempts = 0, authenticated = 1, dead = 0}
channel_cb = {size = 136, userdata = 0x7fc2157f1cd0, channel_data_function = 0x7fc22a7eadcf <data_function>, channel_eof_function = 0x0, channel_close_function = 0x7fc22a7eaebd <close_callback>, channel_signal_function = 0x0, channel_exit_status_function = 0x0, channel_exit_signal_function = 0x0, channel_pty_request_function = 0x7fc22a7eb8fd <pty_request>, channel_shell_request_function = 0x7fc22a7ebbc5 <shell_request>, channel_auth_agent_req_function = 0x0, channel_x11_req_function = 0x0, channel_pty_window_change_function = 0x7fc22a7ebb2f <pty_resize>, channel_exec_request_function = 0x0, channel_env_request_function = 0x0, channel_subsystem_request_function = 0x7fc22a7ebdb2 <subsystem_request>, channel_write_wontblock_function = 0x0}
server_cb = {size = 88, userdata = 0x7fc2157f1cb0, auth_password_function = 0x7fc22a7eb338 <auth_password>, auth_none_function = 0x7fc22a7eb260 <auth_none>, auth_gssapi_mic_function = 0x0, auth_pubkey_function = 0x7fc22a7eb75f <auth_pubkey>, service_request_function = 0x0, channel_open_request_session_function = 0x7fc22a7ead99 <channel_open>, gssapi_select_oid_function = 0x0, gssapi_accept_sec_ctx_function = 0x0, gssapi_verify_mic_function = 0x0}
__func__ = "handle_session"
#22 0x00007fc22a7f07a3 in ssh_connection (varg=0x7fc2200c3bd0) at net_ssh.c:2076
session = 0x7fc2200c3bd0
event = 0x7fc22400bc70
__func__ = "ssh_connection"
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