Replication between different versions of dovecot

[Aki Tuomi]

Hi!

This is a issue that has been fixed in master, thank you for reporting.

See
https://github.com/dovecot/core/commit/187fbf157d5c42f9f06ce52884fefbb4f66c070d.patch

Aki


On 17.10.2017 21:12, Dmitry Nezhevenko wrote:
> Hi,
>
> Can't find any notes about this  in documentation. Is replication supposed
> to work between different versions of dovecot?
>
> I've just found that dovecot 2.2.33.1 was uploaded to debian unstable and
> it crashes on every replication with older dovecot 2.2.27. (version
> 2.2.32.1 was probably ok)
>
> Summary:
> 	- 2.2.33.1 crashes when replicating from/to 2.2.27
> 	- 2.2.32.1 probably ok when replicating from/to 2.2.27
>
> I was able to capture backtrace of crashed doveadm-server:
>
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0  i_stream_next_line (stream=stream at entry=0x0) at istream.c:428
> 428     istream.c: No such file or directory.
> (gdb) bt
> #0  i_stream_next_line (stream=stream at entry=0x0) at istream.c:428
> #1  0x00007f60244306df in i_stream_read_next_line (stream=0x0) at istream.c:449
> #2  0x0000560304f22e79 in server_connection_print_log (conn=0x560305e930f8) at server-connection.c:305
> #3  0x0000560304f238af in server_connection_input_one (conn=<optimized out>) at server-connection.c:405
> #4  server_connection_input (conn=<optimized out>) at server-connection.c:390
> #5  0x00007f602443a572 in io_loop_call_io (io=0x560305e81e30) at ioloop.c:600
> #6  0x00007f602443bc1e in io_loop_handler_run_internal (ioloop=ioloop at entry=0x560305e59ad0) at ioloop-epoll.c:223
> #7  0x00007f602443a606 in io_loop_handler_run (ioloop=ioloop at entry=0x560305e59ad0) at ioloop.c:649
> #8  0x00007f602443a7b8 in io_loop_run (ioloop=0x560305e59ad0) at ioloop.c:624
> #9  0x0000560304f0de5a in dsync_connect_tcp (ctx=ctx at entry=0x560305e7e9e8, mail_set=mail_set at entry=0x560305e8ad50, target=0x560305e8b94c "inhex.vpn.local:9993", ssl=ssl at entry=false, 
>     error_r=error_r at entry=0x7fff8e40b9e8) at doveadm-dsync.c:850
> #10 0x0000560304f0fbe3 in parse_location (error_r=0x7fff8e40b9e8, remote_cmd_args_r=0x7fff8e40b858, location=<optimized out>, mail_set=0x560305e8ad50, ctx=0x560305e7e9e8) at doveadm-dsync.c:875
> #11 cmd_dsync_prerun (_ctx=0x560305e7e9e8, service_user=<optimized out>, error_r=0x7fff8e40b9e8) at doveadm-dsync.c:947
> #12 0x0000560304f10891 in doveadm_mail_next_user (ctx=ctx at entry=0x560305e7e9e8, cctx=cctx at entry=0x7fff8e40b9f0, error_r=error_r at entry=0x7fff8e40b9e8) at doveadm-mail.c:414
> #13 0x0000560304f11473 in doveadm_mail_single_user (ctx=ctx at entry=0x560305e7e9e8, cctx=cctx at entry=0x7fff8e40b9f0, error_r=error_r at entry=0x7fff8e40b9e8) at doveadm-mail.c:460
> #14 0x0000560304f262fb in doveadm_mail_cmd_server_run (cctx=0x7fff8e40b9f0, mctx=0x560305e7e9e8, conn=0x560305e7a878) at client-connection.c:246
> #15 doveadm_cmd_handle (cctx=0x7fff8e40b9f0, argv=<optimized out>, argc=<optimized out>, cmd_name=<optimized out>, conn=0x560305e7a878) at client-connection.c:329
> #16 client_handle_command (args=<optimized out>, conn=0x560305e7a878) at client-connection.c:399
> #17 client_connection_input (conn=<optimized out>) at client-connection.c:541
> #18 0x00007f602443a572 in io_loop_call_io (io=0x560305e58c40) at ioloop.c:600
> #19 0x00007f602443bc1e in io_loop_handler_run_internal (ioloop=ioloop at entry=0x560305e529a0) at ioloop-epoll.c:223
> #20 0x00007f602443a606 in io_loop_handler_run (ioloop=ioloop at entry=0x560305e529a0) at ioloop.c:649
> #21 0x00007f602443a7b8 in io_loop_run (ioloop=0x560305e529a0) at ioloop.c:624
> #22 0x00007f60243bf893 in master_service_run (service=0x560305e52840, callback=<optimized out>) at master-service.c:719
> #23 0x0000560304f011d5 in main (argc=<optimized out>, argv=<optimized out>) at main.c:143
>