Bug#839880: proftpd-basic: proftpd server instance crashed with signal 11

[Олег Мороз]

coredump did not generated. Have tried to use:

|ulimit -c unlimited|

with no effects (have checked / and  /root directories to find coredump)


Then have installed proftpd debug symbols and gdb and start proftpd 
debugging


root at sim-ng-data /run # gdb proftpd
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Reading symbols from proftpd...Reading symbols from 
/usr/lib/debug/.build-id/c9/5250b18658db39aa4692b37f01f3549f2181a5.debug...done.
done.

(gdb) run -n
Starting program: /usr/sbin/proftpd -n
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
2017-12-23 18:56:12,032 sim-ng-data proftpd[11874]: processing 
configuration directory '/etc/proftpd/conf.d/'
2017-12-23 18:56:12,041 sim-ng-data proftpd[11874] sim-ng-data: ProFTPD 
1.3.5e (maint) (built Di Dez 19 2017 07:53:15 CET) standalone mode STARTUP
2017-12-23 18:56:17,915 sim-ng-data proftpd[11912] sim-ng-data 
(OpenWrt[192.168.3.180]): SSH2 session opened.
2017-12-23 15:56:18,046 sim-ng-data proftpd[11912] sim-ng-data 
(OpenWrt[192.168.3.180]): USER ftp: Login successful
2017-12-23 15:56:18,046 sim-ng-data proftpd[11912] sim-ng-data 
(OpenWrt[192.168.3.180]): ProFTPD terminating (signal 11)
2017-12-23 15:56:18,046 sim-ng-data proftpd[11912] sim-ng-data 
(OpenWrt[192.168.3.180]): ProFTPD terminating (signal 11)
2017-12-23 15:56:18,046 sim-ng-data proftpd[11912] sim-ng-data 
(OpenWrt[192.168.3.180]): SSH2 session closed.


program is not crushed (still working and running) because of that i 
have no posibility to collect backtrace of error



23.12.2017 17:53, Hilmar Preuße пишет:
> On 23.12.2017 11:25, Олег Мороз wrote:
>
> Hi Олег,
>
>> 2017-12-23 13:24:15,773 sim-ng-data proftpd[25418] sim-ng-data: ProFTPD
>> 1.3.5e (maint) (built Di Dez 19 2017 07:53:15 CET) standalone mode STARTUP
>> 2017-12-23 13:24:19,256 sim-ng-data proftpd[25446] sim-ng-data
>> (OpenWrt[192.168.3.180]): SSH2 session opened.
>> 2017-12-23 10:24:19,381 sim-ng-data proftpd[25446] sim-ng-data
>> (OpenWrt[192.168.3.180]): USER ftp: Login successful
>> 2017-12-23 10:24:19,381 sim-ng-data proftpd[25446] sim-ng-data
>> (OpenWrt[192.168.3.180]): ProFTPD terminating (signal 11)
>> 2017-12-23 10:24:19,381 sim-ng-data proftpd[25446] sim-ng-data
>> (OpenWrt[192.168.3.180]): SSH2 session closed.
>>
> Is a core dump generated for the crash? If not, don't care for now.
>
> The URL [1] describes some basic steps how to generated a back trace for
> debugging. Please follow them as far as possible, in case of questions
> please call back. The section "Installing the debugging symbols" won't
> work as described; our debug symbols are not in archive yet. However
> I've uploaded the appropriate dbgsym packages to the location where you
> got the proftpd package, please install them from there.
>
> Hilmar
>
> [1] https://wiki.debian.org/HowToGetABacktrace