ProFTPD terminating (signal 11)

[wombat-fertilizer]

I know there has been reported before:

• Bug #31074 (Closed): proftpd crash
  
• Bug #27801 (Closed): Problem with FTP access after 11.1 Upgrade
  
• Bug #27670 (Closed): Update proftpd
  
• Bug #25963 (Closed: Insufficient Info): proftp does not start up
  
• @ProFTP: #650 segfaults with master branch

But... I haven't found a cause, fix, or workaround.

As a refresher, when a ftp clients connects:

Code:

Apr 27 20:44:49 cobalt proftpd[31545]: localhost - ProFTPD 1.3.6 (stable) (built Wed Mar 14 2018 03:37:55 UTC) standalone mode STARTUP
==== ftp client connects ====
Apr 27 20:47:33 cobalt proftpd[34513]: localhost - -----BEGIN STACK TRACE-----
Apr 27 20:47:33 cobalt proftpd[34513]: localhost - [0] 0x801855904 <pthread_sigmask+0x544> at /lib/libthr.so.3
Apr 27 20:47:33 cobalt proftpd[34513]: localhost - [1] 0x801854e9f <pthread_getspecific+0xe2f> at /lib/libthr.so.3
Apr 27 20:47:33 cobalt proftpd[34513]: localhost - -----END STACK TRACE-----
Apr 27 20:47:33 cobalt proftpd[34513]: localhost - ProFTPD terminating (signal 11)
Apr 27 20:47:38 cobalt proftpd[34530]: localhost - -----BEGIN STACK TRACE-----
Apr 27 20:47:38 cobalt proftpd[34530]: localhost - [0] 0x801855904 <pthread_sigmask+0x544> at /lib/libthr.so.3
Apr 27 20:47:38 cobalt proftpd[34530]: localhost - [1] 0x801854e9f <pthread_getspecific+0xe2f> at /lib/libthr.so.3
Apr 27 20:47:38 cobalt proftpd[34530]: localhost - -----END STACK TRACE-----
Apr 27 20:47:38 cobalt proftpd[34530]: localhost - ProFTPD terminating (signal 11)

We've tried building proftpd 1.3.5e on FreeBSD 11.1 and also copying proftpd 1.3.5b binaries from FreeNAS 11.0-U4 with the very same result. This problem is most likely not with proftpd itself.

I know that using SSH works to transfer files, but it's a big hit in CPU & throughput on the client.

 

[dlavigne]

Has the bug been reported upstream (at the proftpd project)? If not, please report it and post the issue number here.

 

[wombat-fertilizer]

Has the bug been reported upstream (at the proftpd project)? If not, please report it and post the issue number here.

yes... I linked to it in the original post:

• @ProFTP: #650 segfaults with master branch