dovecot - Nov 2019 - Learning ham/spam with IMAPSieve: sa-learn-ham.sh terminated abnormally, signal 11

> make sa-laern-ham.sh change name to rspamd-learn-ham.sh and addopt sieve 
> to that name change
I thought about the same thing while following the wiki guide. But in 
the end it's just the name of a bash script. Now I changed it as you 
proposed, since it just makes more sense, but the error remains:

Error: program `/usr/lib/dovecot/sieve/rspamd-learn-ham.sh' terminated 
abnormally, signal 11
Error: sieve: pipe action: failed to pipe message to program 
`rspamd-learn-ham.sh': refer to server log for more information. 
[2019-11-17 08:35:58]
Error: sieve: Execution of script 
/usr/lib/dovecot/sieve/report-ham.sieve failed

Since I want to avoid debugging old and already fixed bugs, I updated to

# dovecot --version
2.3.8 (9df20d2db)

Now the debug log is a bit more chatty, but the error remains:

Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Created
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Pass 
environment: USER=user at domain.tld
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Pass 
environment: HOME=/var/vmail/mailboxes/domain.tld/user
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Pass 
environment: HOST=mail.domain.tld
Debug: Mailbox INBOX: UID 22039: Opened mail because: mail stream
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: 
Establishing connection
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Forked 
child process
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
Connected to program
Error: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
write(program stdin) failed: Broken pipe
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
Failed to run program
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
Disconnected
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
Child process ended
Error: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
Terminated abnormally with signal 11
Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
Destroy
Error: sieve: pipe action: failed to pipe message to program 
`rspamd-learn-ham.sh': refer to server log for more information. 
[2019-11-17 19:32:40]
sieve: left message in mailbox 'INBOX'
Error: sieve: Execution of script 
/usr/lib/dovecot/sieve/report-ham.sieve failed
-- 

E-Mail:    it at rey.nrw
Tel.:      +49 211 43636543
Mobil:     +49 162 9706249
Anschrift: Adolf-Klarenbach-Stra?e 16, 40589 D?sseldorf

On 17/11/2019 19:40, Jens Rey via dovecot wrote:
> Since I want to avoid debugging old and already fixed bugs, I updated to
>
> # dovecot --version
> 2.3.8 (9df20d2db)
>
> Now the debug log is a bit more chatty, but the error remains:
>
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Created
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Pass 
> environment: USER=user at domain.tld
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Pass 
> environment: HOME=/var/vmail/mailboxes/domain.tld/user
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Pass 
> environment: HOST=mail.domain.tld
> Debug: Mailbox INBOX: UID 22039: Opened mail because: mail stream
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: 
> Establishing connection
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh: Forked 
> child process
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
> Connected to program
> Error: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
> write(program stdin) failed: Broken pipe
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
> Failed to run program
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
> Disconnected
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
> Child process ended
> Error: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
> Terminated abnormally with signal 11
> Debug: program exec:/usr/lib/dovecot/sieve/rspamd-learn-ham.sh (9891): 
> Destroy
> Error: sieve: pipe action: failed to pipe message to program 
> `rspamd-learn-ham.sh': refer to server log for more information. 
> [2019-11-17 19:32:40]
> sieve: left message in mailbox 'INBOX'
> Error: sieve: Execution of script 
> /usr/lib/dovecot/sieve/report-ham.sieve failed
Dovecot forks a child process to execute the program. Subsequently, at 
some point, the child process fails with a segmentation fault. Granted, 
that could still be happening in Dovecot code, but since the child 
process quickly executes the actual program (the shell in this case), it 
is more likely that this problem emerges outside Dovecot.

You can attach GDB to imap with follow-fork-mode set to 'child', so you 
can maybe see what causes the segfault.

Regards,

Stephan.