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Thomas Leuxner

2016-Dec-20 08:21 UTC

Latest Dovecot v2.2.devel (9bc8d9b) crashes on login and lmtp

I was unable to produce an IMAP core but have been successful with LMTP.
Basically it crashes right upon login or delivery:

Dec 20 08:55:23 nihlus dovecot: master: Dovecot v2.2.devel (9bc8d9b) starting up
for imap, lmtp
Dec 20 08:56:15 nihlus dovecot: imap(tlx at leuxner.net): Fatal: master:
service(imap): child 5710 killed with signal 11 (core not dumped)
Dec 20 08:57:23 nihlus dovecot: lmtp(5967): Connect from local
Dec 20 08:57:23 nihlus dovecot: lmtp(5967): Fatal: master: service(lmtp): child
5967 killed with signal 11 (core dumped)

$ gdb /usr/lib/dovecot/lmtp core_lmtp.5967.nihlus.leuxner.net
GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1
Copyright (C) 2014 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.  Type "show
copying"
and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to
"word"...
Reading symbols from /usr/lib/dovecot/lmtp...Reading symbols from
/usr/lib/debug/.build-id/ec/199069dd786feb54e5af43f983ce9c3bb4c29c.debug...done.
done.
[New LWP 5967]
[Thread debugging using libthread_db enabled]
Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `dovecot/lmtp'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  __memcpy_sse2_unaligned () at
../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:33
33      ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S: No such file or
directory.
#0  __memcpy_sse2_unaligned () at
../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:33
No locals.
#1  0x00007f9177db4779 in memcpy (__len=<optimized out>, __src=0x0,
__dest=0x7f917a5c5bf8) at /usr/include/x86_64-linux-gnu/bits/string3.h:51
No locals.
#2  p_strconcat (pool=<optimized out>, str1=<optimized out>) at
strfuncs.c:218
        args = {{gp_offset = 16, fp_offset = 48, overflow_arg_area =
0x7ffdcadea060, reg_save_area = 0x7ffdcade9f90}}
        temp = 0x0
        ret = <optimized out>
        len = 49
#3  0x00007f91780744fd in mdbox_storage_create (_storage=0x7f917a5c5930,
ns=0x7f917a5b79d0, error_r=0x7ffdcadea1a0) at mdbox-storage.c:57
        storage = 0x7f917a5c5930
        dir = <optimized out>
#4  0x00007f917805952b in mail_storage_create_full (ns=ns at
entry=0x7f917a5b79d0, driver=<optimized out>, driver at entry=0x0,
data=<optimized out>, flags=flags at entry=(unknown: 0),
    storage_r=storage_r at entry=0x7ffdcadea170, error_r=error_r at
entry=0x7ffdcadea1a0) at mail-storage.c:395
        storage = 0x7f917a5c5930
        list = 0x7f917a5c3ca0
        list_set = {layout = 0x7f91781083c6 "fs", root_dir =
0x7f917a52e100 "/var/vmail/domains/leuxner.net/tlx/mdbox", index_dir =
0x0, index_pvt_dir = 0x0, control_dir = 0x0, alt_dir = 0x0,
          inbox_path = 0x0, subscription_fname = 0x7f917810f234
"subscriptions", list_index_fname = 0x7f917810925e
"dovecot.list.index", maildir_name = 0x7f917810bc17
"dbox-Mails",
          mailbox_dir_name = 0x7f917810c301 "mailboxes", escape_char =
0 '\000', broken_char = 0 '\000', utf8 = false, alt_dir_nocheck
= false, index_control_use_maildir_name = false}
        list_flags = <optimized out>
        p = <optimized out>
        __FUNCTION__ = "mail_storage_create_full"
#5  0x00007f91780598cc in mail_storage_create (ns=ns at entry=0x7f917a5b79d0,
driver=driver at entry=0x0, flags=flags at entry=(unknown: 0), error_r=error_r
at entry=0x7ffdcadea1a0) at mail-storage.c:416
        storage = 0x7f917a5bfc90
#6  0x00007f9178051b89 in mail_namespaces_init_add (user=user at
entry=0x7f917a5bfc90, ns_set=<optimized out>,
unexpanded_ns_set=0x7f917a5c0178, ns_p=ns_p at entry=0x7ffdcadea200,
    error_r=error_r at entry=0x7ffdcadea290) at mail-namespace.c:195
        mail_set = <optimized out>
        ns = 0x7f917a5b79d0
        driver = 0x0
        error = 0x0
        ret = <optimized out>
#7  0x00007f9178052cd9 in mail_namespaces_init (user=0x7f917a5bfc90,
error_r=error_r at entry=0x7ffdcadea290) at mail-namespace.c:414
        mail_set = 0x7f917a5c0c58
        ns_set = 0x7f917a5c0f70
        unexpanded_ns_set = 0x7f917a5c0150
        namespaces = 0x0
        ns_p = 0x7ffdcadea200
        i = <optimized out>
        count = <optimized out>
        count2 = <optimized out>
        __FUNCTION__ = "mail_namespaces_init"
#8  0x00007f9178060b65 in mail_storage_service_init_post (ctx=<optimized
out>, error_r=0x7ffdcadea290, mail_user_r=<optimized out>,
priv=0x7ffdcadea2a0, user=0x7f917a573910) at mail-storage-service.c:728
        mail_set = 0x7f917a5c0c58
        home = 0x7f917a59e761 "/var/vmail/domains/leuxner.net/tlx"
        mail_user = 0x7f917a5bfc90
#9  mail_storage_service_next_real (mail_user_r=<optimized out>,
user=0x7f917a573910, ctx=<optimized out>) at mail-storage-service.c:1427
        len = <optimized out>
        temp_priv_drop = <optimized out>
        priv = {uid = 5000, gid = 5000, uid_source = 0x7f9178107684 "userdb
lookup", gid_source = 0x7f9178107684 "userdb lookup", home =
0x7f917a59e761 "/var/vmail/domains/leuxner.net/tlx",
          chroot = 0x7f917a52d458 ""}
        error = 0x7f917a5b3830 ""
        disallow_root = <optimized out>
        use_chroot = <optimized out>
#10 mail_storage_service_next (ctx=<optimized out>, user=0x7f917a573910,
mail_user_r=mail_user_r at entry=0x7f917a560b48) at mail-storage-service.c:1445
        old_log_prefix = 0x7f917a5ba530 "lmtp(5967, tlx at leuxner.net):
"
#11 0x00007f9178789f55 in client_deliver (session=0x7f917a5bf880,
src_mail=0x7f917a5bb060, rcpt=0x7f917a5621d0, client=0x7f917a560a10) at
commands.c:837
        set_parser = <optimized out>
        line = <optimized out>
        str = <optimized out>
        mail_error = 2052462064
        ret = <optimized out>
        input = <optimized out>
        ns = <optimized out>
        delivery_time_started = {tv_sec = 1482220643, tv_usec = 129544}
        sets = <optimized out>
        storage = 0x7f917a5b3870
        mail_set = <optimized out>
        username = 0x7f917a52d070 "tlx at leuxner.net"
        dctx = {pool = 0x0, set = 0x7f917a560a10, session = 0x0, timeout_secs =
0, session_time_msecs = 0, delivery_time_started = {tv_sec = 140262799447056,
tv_usec = 140262799447168}, dup_ctx = 0x2,
          session_id = 0x7f9177d980d8 <i_stream_file_read+136>
"H\211\305H\211\350H\301\350?\204\300D\017\266\350\017\205\030\001",
src_mail = 0xf72,
          src_envelope_sender = 0xf65305b35804d500 <error: Cannot access
memory at address 0xf65305b35804d500>, dest_user = 0x0, dest_addr =
0x7f917a561410 "\001", final_dest_addr = 0x7f917a561480 "q
",
          dest_mailbox_name = 0x2 <error: Cannot access memory at address
0x2>, dest_mail = 0x0, var_expand_table = 0x7f9177d93c33
<i_stream_read+83>, tempfail_error = 0x7f917a560a10 "",
          tried_default_save = 64, saved_mail = 71, save_dest_mail = 83,
mailbox_full = 122, dsn = 145}
        lda_set = <optimized out>
        error = <optimized out>
#12 client_deliver_next (session=0x7f917a5bf880, src_mail=0x7f917a5bb060,
client=0x7f917a560a10) at commands.c:930
        count = <optimized out>
#13 client_input_data_write_local (input=<optimized out>,
client=0x7f917a560a10) at commands.c:1026
        src_mail = 0x7f917a5bb060
        first_uid = 4294967295
        session = 0x7f917a5bf880
        old_uid = 0
#14 client_input_data_write (client=0x7f917a560a10) at commands.c:1161
        input = 0x7f917a57d1f0
#15 client_input_data_handle (client=0x7f917a560a10) at commands.c:1256
        data = <optimized out>
        size = 110
        ret = <optimized out>
#16 0x00007f9177d9d962 in io_loop_call_io (io=0x7f917a5615f0) at ioloop.c:599
        ioloop = 0x7f917a534740
        t_id = 2
        __FUNCTION__ = "io_loop_call_io"
#17 0x00007f9177d9efba in io_loop_handler_run_internal (ioloop=ioloop at
entry=0x7f917a534740) at ioloop-epoll.c:222
        ctx = 0x7f917a53a370
        io = <optimized out>
        tv = {tv_sec = 299, tv_usec = 984106}
        events_count = <optimized out>
        msecs = <optimized out>
        ret = 1
        i = 0
        j = <optimized out>
        call = <optimized out>
        __FUNCTION__ = "io_loop_handler_run_internal"
#18 0x00007f9177d9d9fc in io_loop_handler_run (ioloop=ioloop at
entry=0x7f917a534740) at ioloop.c:648
No locals.
#19 0x00007f9177d9dba8 in io_loop_run (ioloop=0x7f917a534740) at ioloop.c:623
        __FUNCTION__ = "io_loop_run"
#20 0x00007f9177d25a83 in master_service_run (service=0x7f917a5345e0,
callback=<optimized out>) at master-service.c:641
No locals.
#21 0x00007f9178788262 in main (argc=1, argv=0x7f917a534390) at main.c:125
        set_roots = {0x7f917855e400 <lda_setting_parser_info>,
0x7f917898f580 <lmtp_setting_parser_info>, 0x0}
        service_flags = <optimized out>
        storage_service_flags = <optimized out>
        c = <optimized out>

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Aki Tuomi

2016-Dec-20 08:25 UTC

head link

Latest Dovecot v2.2.devel (9bc8d9b) crashes on login and lmtp

> On December 20, 2016 at 10:21 AM Thomas Leuxner <tlx at leuxner.net>
wrote:
> 
> 
> I was unable to produce an IMAP core but have been successful with LMTP.
Basically it crashes right upon login or delivery:
> 
> Dec 20 08:55:23 nihlus dovecot: master: Dovecot v2.2.devel (9bc8d9b)
starting up for imap, lmtp
> Dec 20 08:56:15 nihlus dovecot: imap(tlx at leuxner.net): Fatal: master:
service(imap): child 5710 killed with signal 11 (core not dumped)
> Dec 20 08:57:23 nihlus dovecot: lmtp(5967): Connect from local
> Dec 20 08:57:23 nihlus dovecot: lmtp(5967): Fatal: master: service(lmtp):
child 5967 killed with signal 11 (core dumped)
> 
> $ gdb /usr/lib/dovecot/lmtp core_lmtp.5967.nihlus.leuxner.net
> GNU gdb (Debian 7.7.1+dfsg-5) 7.7.1
> Copyright (C) 2014 Free Software Foundation, Inc.
> License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
> This is free software: you are free to change and redistribute it.
> There is NO WARRANTY, to the extent permitted by law.  Type "show
copying"
> and "show warranty" for details.
> This GDB was configured as "x86_64-linux-gnu".
> Type "show configuration" for configuration details.
> For bug reporting instructions, please see:
> <http://www.gnu.org/software/gdb/bugs/>.
> Find the GDB manual and other documentation resources online at:
> <http://www.gnu.org/software/gdb/documentation/>.
> For help, type "help".
> Type "apropos word" to search for commands related to
"word"...
> Reading symbols from /usr/lib/dovecot/lmtp...Reading symbols from
/usr/lib/debug/.build-id/ec/199069dd786feb54e5af43f983ce9c3bb4c29c.debug...done.
> done.
> [New LWP 5967]
> [Thread debugging using libthread_db enabled]
> Using host libthread_db library
"/lib/x86_64-linux-gnu/libthread_db.so.1".
> Core was generated by `dovecot/lmtp'.
> Program terminated with signal SIGSEGV, Segmentation fault.
> #0  __memcpy_sse2_unaligned () at
../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:33
> 33      ../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S: No such file
or directory.
> #0  __memcpy_sse2_unaligned () at
../sysdeps/x86_64/multiarch/memcpy-sse2-unaligned.S:33
> No locals.
> #1  0x00007f9177db4779 in memcpy (__len=<optimized out>, __src=0x0,
__dest=0x7f917a5c5bf8) at /usr/include/x86_64-linux-gnu/bits/string3.h:51
> No locals.
> #2  p_strconcat (pool=<optimized out>, str1=<optimized out>) at
strfuncs.c:218
>         args = {{gp_offset = 16, fp_offset = 48, overflow_arg_area =
0x7ffdcadea060, reg_save_area = 0x7ffdcade9f90}}
>         temp = 0x0
>         ret = <optimized out>
>         len = 49
> #3  0x00007f91780744fd in mdbox_storage_create (_storage=0x7f917a5c5930,
ns=0x7f917a5b79d0, error_r=0x7ffdcadea1a0) at mdbox-storage.c:57
>         storage = 0x7f917a5c5930
>         dir = <optimized out>
> #4  0x00007f917805952b in mail_storage_create_full (ns=ns at
entry=0x7f917a5b79d0, driver=<optimized out>, driver at entry=0x0,
data=<optimized out>, flags=flags at entry=(unknown: 0),
>     storage_r=storage_r at entry=0x7ffdcadea170, error_r=error_r at
entry=0x7ffdcadea1a0) at mail-storage.c:395
>         storage = 0x7f917a5c5930
>         list = 0x7f917a5c3ca0
>         list_set = {layout = 0x7f91781083c6 "fs", root_dir =
0x7f917a52e100 "/var/vmail/domains/leuxner.net/tlx/mdbox", index_dir =
0x0, index_pvt_dir = 0x0, control_dir = 0x0, alt_dir = 0x0,
>           inbox_path = 0x0, subscription_fname = 0x7f917810f234
"subscriptions", list_index_fname = 0x7f917810925e
"dovecot.list.index", maildir_name = 0x7f917810bc17
"dbox-Mails",
>           mailbox_dir_name = 0x7f917810c301 "mailboxes",
escape_char = 0 '\000', broken_char = 0 '\000', utf8 = false,
alt_dir_nocheck = false, index_control_use_maildir_name = false}
>         list_flags = <optimized out>
>         p = <optimized out>
>         __FUNCTION__ = "mail_storage_create_full"
> #5  0x00007f91780598cc in mail_storage_create (ns=ns at
entry=0x7f917a5b79d0, driver=driver at entry=0x0, flags=flags at entry=(unknown:
0), error_r=error_r at entry=0x7ffdcadea1a0) at mail-storage.c:416
>         storage = 0x7f917a5bfc90
> #6  0x00007f9178051b89 in mail_namespaces_init_add (user=user at
entry=0x7f917a5bfc90, ns_set=<optimized out>,
unexpanded_ns_set=0x7f917a5c0178, ns_p=ns_p at entry=0x7ffdcadea200,
>     error_r=error_r at entry=0x7ffdcadea290) at mail-namespace.c:195
>         mail_set = <optimized out>
>         ns = 0x7f917a5b79d0
>         driver = 0x0
>         error = 0x0
>         ret = <optimized out>
> #7  0x00007f9178052cd9 in mail_namespaces_init (user=0x7f917a5bfc90,
error_r=error_r at entry=0x7ffdcadea290) at mail-namespace.c:414
>         mail_set = 0x7f917a5c0c58
>         ns_set = 0x7f917a5c0f70
>         unexpanded_ns_set = 0x7f917a5c0150
>         namespaces = 0x0
>         ns_p = 0x7ffdcadea200
>         i = <optimized out>
>         count = <optimized out>
>         count2 = <optimized out>
>         __FUNCTION__ = "mail_namespaces_init"
> #8  0x00007f9178060b65 in mail_storage_service_init_post (ctx=<optimized
out>, error_r=0x7ffdcadea290, mail_user_r=<optimized out>,
priv=0x7ffdcadea2a0, user=0x7f917a573910) at mail-storage-service.c:728
>         mail_set = 0x7f917a5c0c58
>         home = 0x7f917a59e761
"/var/vmail/domains/leuxner.net/tlx"
>         mail_user = 0x7f917a5bfc90
> #9  mail_storage_service_next_real (mail_user_r=<optimized out>,
user=0x7f917a573910, ctx=<optimized out>) at mail-storage-service.c:1427
>         len = <optimized out>
>         temp_priv_drop = <optimized out>
>         priv = {uid = 5000, gid = 5000, uid_source = 0x7f9178107684
"userdb lookup", gid_source = 0x7f9178107684 "userdb
lookup", home = 0x7f917a59e761
"/var/vmail/domains/leuxner.net/tlx",
>           chroot = 0x7f917a52d458 ""}
>         error = 0x7f917a5b3830 ""
>         disallow_root = <optimized out>
>         use_chroot = <optimized out>
> #10 mail_storage_service_next (ctx=<optimized out>,
user=0x7f917a573910, mail_user_r=mail_user_r at entry=0x7f917a560b48) at
mail-storage-service.c:1445
>         old_log_prefix = 0x7f917a5ba530 "lmtp(5967, tlx at
leuxner.net): "
> #11 0x00007f9178789f55 in client_deliver (session=0x7f917a5bf880,
src_mail=0x7f917a5bb060, rcpt=0x7f917a5621d0, client=0x7f917a560a10) at
commands.c:837
>         set_parser = <optimized out>
>         line = <optimized out>
>         str = <optimized out>
>         mail_error = 2052462064
>         ret = <optimized out>
>         input = <optimized out>
>         ns = <optimized out>
>         delivery_time_started = {tv_sec = 1482220643, tv_usec = 129544}
>         sets = <optimized out>
>         storage = 0x7f917a5b3870
>         mail_set = <optimized out>
>         username = 0x7f917a52d070 "tlx at leuxner.net"
>         dctx = {pool = 0x0, set = 0x7f917a560a10, session = 0x0,
timeout_secs = 0, session_time_msecs = 0, delivery_time_started = {tv_sec =
140262799447056, tv_usec = 140262799447168}, dup_ctx = 0x2,
>           session_id = 0x7f9177d980d8 <i_stream_file_read+136>
"H\211\305H\211\350H\301\350?\204\300D\017\266\350\017\205\030\001",
src_mail = 0xf72,
>           src_envelope_sender = 0xf65305b35804d500 <error: Cannot access
memory at address 0xf65305b35804d500>, dest_user = 0x0, dest_addr =
0x7f917a561410 "\001", final_dest_addr = 0x7f917a561480 "q
",
>           dest_mailbox_name = 0x2 <error: Cannot access memory at
address 0x2>, dest_mail = 0x0, var_expand_table = 0x7f9177d93c33
<i_stream_read+83>, tempfail_error = 0x7f917a560a10 "",
>           tried_default_save = 64, saved_mail = 71, save_dest_mail = 83,
mailbox_full = 122, dsn = 145}
>         lda_set = <optimized out>
>         error = <optimized out>
> #12 client_deliver_next (session=0x7f917a5bf880, src_mail=0x7f917a5bb060,
client=0x7f917a560a10) at commands.c:930
>         count = <optimized out>
> #13 client_input_data_write_local (input=<optimized out>,
client=0x7f917a560a10) at commands.c:1026
>         src_mail = 0x7f917a5bb060
>         first_uid = 4294967295
>         session = 0x7f917a5bf880
>         old_uid = 0
> #14 client_input_data_write (client=0x7f917a560a10) at commands.c:1161
>         input = 0x7f917a57d1f0
> #15 client_input_data_handle (client=0x7f917a560a10) at commands.c:1256
>         data = <optimized out>
>         size = 110
>         ret = <optimized out>
> #16 0x00007f9177d9d962 in io_loop_call_io (io=0x7f917a5615f0) at
ioloop.c:599
>         ioloop = 0x7f917a534740
>         t_id = 2
>         __FUNCTION__ = "io_loop_call_io"
> #17 0x00007f9177d9efba in io_loop_handler_run_internal (ioloop=ioloop at
entry=0x7f917a534740) at ioloop-epoll.c:222
>         ctx = 0x7f917a53a370
>         io = <optimized out>
>         tv = {tv_sec = 299, tv_usec = 984106}
>         events_count = <optimized out>
>         msecs = <optimized out>
>         ret = 1
>         i = 0
>         j = <optimized out>
>         call = <optimized out>
>         __FUNCTION__ = "io_loop_handler_run_internal"
> #18 0x00007f9177d9d9fc in io_loop_handler_run (ioloop=ioloop at
entry=0x7f917a534740) at ioloop.c:648
> No locals.
> #19 0x00007f9177d9dba8 in io_loop_run (ioloop=0x7f917a534740) at
ioloop.c:623
>         __FUNCTION__ = "io_loop_run"
> #20 0x00007f9177d25a83 in master_service_run (service=0x7f917a5345e0,
callback=<optimized out>) at master-service.c:641
> No locals.
> #21 0x00007f9178788262 in main (argc=1, argv=0x7f917a534390) at main.c:125
>         set_roots = {0x7f917855e400 <lda_setting_parser_info>,
0x7f917898f580 <lmtp_setting_parser_info>, 0x0}
>         service_flags = <optimized out>
>         storage_service_flags = <optimized out>
>         c = <optimized out>
>
Hi!

Thank you for your report, we will look into it.

Aki

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