Re: lmtp Panic Buffer write out of range

Op 21-8-2018 om 14:57 schreef Gabriele Nencioni:

Hi all, as described here: https://www.dovecot.org/pipermail/dovecot/2018-July/112173.html

we are experiencing the same error on dovecot version 2.3.2.1 while it never occurs on an old version as 2.2.15

This looks a lot like: https://dovecot.org/list/dovecot/2018-July/112167.html

That one is fixed pending release.

Regards,

Stephan.

It followings the error logs:

On an upgraded dovecot backend: Aug 21 12:03:51 backend20 dovecot: lmtp(test1@internalinboundcm.eu): Panic: Buffer write out of range (789 + 18446744073709551606) /var/log/dovecot_lmtp_20180821.12.log-Aug 21 12:03:51 monti-backend20 dovecot: lmtp(test1@internalinboundcm.eu): Error: Raw backtrace: /usr/lib/dovecot/libdovecot.so.0(+0xcb851) [0x7f78e6f0a851] -> /usr/lib/dovecot/libdovecot.so.0(+0xcb8e9) [0x7f78e6f0a8e9] -> /usr/lib/dovecot/libdovecot.so.0(i_fatal+0) [0x7f78e6e78851] -> /usr/lib/dovecot/libdovecot.so.0(buffer_write+0x131) [0x7f78e6f04871] -> /usr/lib/dovecot/libdovecot-sieve.so.0(rfc2822_header_append+0xcf) [0x7f78e531613f] -> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x7d35b) [0x7f78e531335b] -> /usr/lib/dovecot/libdovecot-sieve.so.0(edit_mail_header_add+0x1b) [0x7f78e531525b] -> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x73014) [0x7f78e5309014] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_continue+0x81) [0x7f78e52d2a11] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_interpreter_run+0x2b) [0x7f78e52d2c7b] -> /usr/lib/dovecot/libdovecot-sieve.so.0(+0x51000) [0x7f78e52e7000] -> /usr/lib/dovecot/libdovecot-sieve.so.0(sieve_multiscript_run+0x3a) [0x7f78e52e7eba] -> /usr/lib/dovecot/modules/lib90_sieve_plugin.so(+0x38f0) [0x7f78e554e8f0] -> /usr/lib/dovecot/libdovecot-lda.so.0(mail_deliver+0xf0) [0x7f78e750da30] -> dovecot/lmtp 81.88.49.172 DATA [0x5582554451d1] -> dovecot/lmtp 81.88.49.172 DATA [0x558255443ee3] -> /usr/lib/dovecot/libdovecot.so.0(+0x4c402) [0x7f78e6e8b402] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_call_io+0x69) [0x7f78e6f228a9] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run_internal+0x109) [0x7f78e6f24199] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_handler_run+0x52) [0x7f78e6f229b2] -> /usr/lib/dovecot/libdovecot.so.0(io_loop_run+0x38) [0x7f78e6f22bc8] -> /usr/lib/dovecot/libdovecot.so.0(master_service_run+0x13) [0x7f78e6e9cff3] -> dovecot/lmtp 81.88.49.172 DATA [0x558255442f70] -> /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf1) [0x7f78e6ac02e1] -> dovecot/lmtp 81.88.49.172 DATA [0x5582554430ba]

while once the user test1@internalinboundcm.eu has been moved on an old dovecot backend, with the "doveadm director move" command the message has been properly delivered at next retry attempt: Aug 21 12:32:31 backend01 dovecot: lmtp(test1@internalinboundcm.eu): copy from <lmtp DATA>: box=Spam, uid=1, msgid=ceb54c05728586392119651424858d85@l2.losclientes3.com Aug 21 12:32:31 backend01 dovecot: lmtp(test1@internalinboundcm.eu): Zv32Lzbqe1tSLQAAF5Yx/g: sieve: msgid=ceb54c05728586392119651424858d85@l2.losclientes3.com: stored mail into mailbox 'Spam'

As you can see the message was detected as spam

Let me know if you need more info or details (such us the original message or the sieve filter that trigger the problem)

Thanks in advance Regards