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Posted to issues@guacamole.apache.org by "Dmitry Katsubo (Jira)" <ji...@apache.org> on 2022/10/14 09:05:00 UTC
[jira] [Created] (GUACAMOLE-1697) guacd segfaults in rfbClientCleanup
Dmitry Katsubo created GUACAMOLE-1697:
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Summary: guacd segfaults in rfbClientCleanup
Key: GUACAMOLE-1697
URL: https://issues.apache.org/jira/browse/GUACAMOLE-1697
Project: Guacamole
Issue Type: Bug
Components: guacd
Affects Versions: 1.3.0
Reporter: Dmitry Katsubo
The issue is reproducible each time I connect to VNC via guacd. The screen in browser window freezes but after guacd restarts, it continues to function properly.
Core dump:
{code}
TIME PID UID GID SIG COREFILE EXE
Mon 2022-10-10 10:08:28 CEST 1881494 502 502 11 present /usr/sbin/guacd
Last core dump info:
PID: 1881494 (guacd)
UID: 502 (guacd)
GID: 502 (guacd)
Signal: 11 (SEGV)
Timestamp: Mon 2022-10-10 10:08:28 CEST (20h ago)
Command Line: /usr/sbin/guacd -b 127.0.0.1 -l 4822 -p /var/run/guacd/guacd.pid
Executable: /usr/sbin/guacd
Control Group: /system.slice/guacd.service
Unit: guacd.service
Slice: system.slice
Storage: /var/lib/systemd/coredump/core.guacd.502.056edc242bfa40b5a8014aa81b8e3ec8.1881494.1665389308000000.zst
Message: Process 1881494 (guacd) of user 502 dumped core.
Stack trace of thread 1885301:
#0 0x00007faf1a69873c cfree (libc.so.6 + 0x8a73c)
#1 0x00007faf18e3491a rfbClientCleanup (libvncclient.so.1 + 0x1b91a)
#2 0x00007faf18e4b581 guac_vnc_client_free_handler (libguac-client-vnc.so + 0x9581)
#3 0x00007faf1a890ab2 guac_client_free (libguac.so.19 + 0x8ab2)
#4 0x000056166c7917b5 n/a (guacd + 0x47b5)
#5 0x00007faf1a86eea7 start_thread (libpthread.so.0 + 0x8ea7)
#6 0x00007faf1a70bdef __clone (libc.so.6 + 0xfddef)
Stack trace of thread 1881497:
#0 0x00007faf1a6d3c61 clock_nanosleep (libc.so.6 + 0xc5c61)
#1 0x00007faf1a6d9443 __nanosleep (libc.so.6 + 0xcb443)
#2 0x00007faf1a896122 n/a (libguac.so.19 + 0xe122)
#3 0x00007faf1a86eea7 start_thread (libpthread.so.0 + 0x8ea7)
#4 0x00007faf1a70bdef __clone (libc.so.6 + 0xfddef)
Stack trace of thread 1881494:
#0 0x00007faf1a875ad8 pthread_cond_timedwait@@GLIBC_2.3.2 (libpthread.so.0 + 0xfad8)
#1 0x000056166c791bff n/a (guacd + 0x4bff)
#2 0x000056166c790ec9 n/a (guacd + 0x3ec9)
#3 0x00007faf1a86eea7 start_thread (libpthread.so.0 + 0x8ea7)
#4 0x00007faf1a70bdef __clone (libc.so.6 + 0xfddef)
{code}
[guacd v1.3.0-1 from Debian bullseye|https://packages.debian.org/bullseye/guacd]
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