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Posted to issues@guacamole.apache.org by "Mike Jumper (Jira)" <ji...@apache.org> on 2022/10/14 17:47:00 UTC
[jira] [Commented] (GUACAMOLE-1697) guacd segfaults in rfbClientCleanup
[ https://issues.apache.org/jira/browse/GUACAMOLE-1697?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17617893#comment-17617893 ]
Mike Jumper commented on GUACAMOLE-1697:
----------------------------------------
[~dma_k] - please retest against the latest release (1.4.0) of Guacamole. You will need to either build from source or use the Docker images. If you're able to reproduce the issue with a 1.4.0 build of guacamole-server, feel free to reopen. See:
https://guacamole.apache.org/faq/#test-against-latest-version
> 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
> Priority: Minor
>
> 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}
> Problematic [guacd v1.3.0-1 from Debian bullseye|https://packages.debian.org/bullseye/guacd]. The previous v0.9.9 is known to work without this issue.
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