Alex
2021-May-13 21:07 UTC
lmtp(5672): Fatal: master: service(lmtp): child 5672 killed with signal 11 (core dumped)
Hi
Sometimes I see such lines in the logs
May 10 23:15:31 mail dovecot[374]: lmtp(452): Fatal: master:
service(lmtp): child 452 killed with signal 11 (core not dumped -
https://dovecot.org/bugreport.html#coredumps - set
/proc/sys/fs/suid_dumpable to 2)
May 12 18:50:19 mail dovecot[374]: lmtp(3533): Fatal: master:
service(lmtp): child 3533 killed with signal 11 (core not dumped -
https://dovecot.org/bugreport.html#coredumps - set
/proc/sys/fs/suid_dumpable to 2)
May 13 17:21:34 mail dovecot[4910]: lmtp(5672): Fatal: master:
service(lmtp): child 5672 killed with signal 11 (core dumped)
and postfix logs:
postfix/lmtp[28025]: 502DA17E1BC3: to=<email at domain.com>,
relay=1.0.1.1[1.0.1.1]:11111, delay=0.78, delays=0.69/0/0.09/0,
dsn=4.4.2, status=deferred (lost connection with 1.0.1.1[1.0.1.1] while
receiving the initial server greeting)
It was the spam message
This error was in some previous versions too
Information for debugging:
dovecot is working in lxc container with Centos 8 in Proxmox
5.4.101-1-pve #1 SMP PVE 5.4.101-1 (Fri, 26 Feb 2021 13:13:09 +0100)
x86_64 x86_64 x86_64 GNU/Linux
# gdb /usr/libexec/dovecot/lmtp
'core-lmtp-5672-!usr!libexec!dovecot!lmtp'
GNU gdb (GDB) Red Hat Enterprise Linux 8.2-12.el8
Copyright (C) 2018 Free Software Foundation, Inc.
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<http://gnu.org/licenses/gpl.html>
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For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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"word"...
Reading symbols from /usr/libexec/dovecot/lmtp...Reading symbols from
/usr/lib/debug/usr/libexec/dovecot/lmtp-2.3.14-1.0.rhel8.x86_64.debug...done.
done.
[New LWP 5672]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `dovecot/lmtp'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 __strlen_sse2 () at ../sysdeps/x86_64/multiarch/../strlen.S:120
120 movdqu (%rax), %xmm4
(gdb) bt
#0 __strlen_sse2 () at ../sysdeps/x86_64/multiarch/../strlen.S:120
#1 0x00007fbc3f65725b in p_strdup (pool=0x5620ae47d3e0, str=0x8 <error:
Cannot access memory at address 0x8>) at strfuncs.c:51
#2 0x00007fbc3f5b292a in setting_copy () at settings-parser.c:1538
#3 0x00007fbc3f5b2d8a in settings_dup_full () at settings-parser.c:1600
#4 0x00007fbc3f9547ba in mail_user_alloc (parent_event=0x0,
username=0x7fbc3fa0b24a "raw mail user", set_info=0x5620ae46e458,
set=0x5620ae430220) at mail-user.c:113
#5 0x00007fbc3f9a1dc5 in raw_storage_create_from_set
(set_info=<optimized out>, set=<optimized out>) at raw-storage.c:25
#6 0x00005620ad66769a in client_raw_user_create (client=0x5620ae4aa8b8,
client=0x5620ae4aa8b8) at lmtp-client.c:105
#7 client_create (fd_in=17, fd_out=17, conn=0x7fff7071af50) at
lmtp-client.c:177
#8 0x00007fbc3f5acc99 in master_service_client_connection_callback
(service=0x5620ae427130, conn=0x7fff7071af50) at master-service.c:980
#9 0x00007fbc3f5ad015 in master_service_listen (l=0x5620ae427610) at
master-service.c:1212
#10 0x00007fbc3f63904d in io_loop_call_io (io=0x5620ae5032b0) at
ioloop.c:714
#11 0x00007fbc3f63a679 in io_loop_handler_run_internal
(ioloop=ioloop at entry=0x5620ae4272d0) at ioloop-epoll.c:222
#12 0x00007fbc3f6390f0 in io_loop_handler_run (ioloop=0x5620ae4272d0) at
ioloop.c:766
#13 0x00007fbc3f639268 in io_loop_run (ioloop=0x5620ae4272d0) at
ioloop.c:739
#14 0x00007fbc3f5ac557 in master_service_run (service=0x5620ae427130,
callback=callback at entry=0x5620ad666fa0 <client_connected>) at
master-service.c:853
#15 0x00005620ad666dcd in main (argc=<optimized out>, argv=<optimized
out>) at main.c:168
(gdb) bt full
#0 __strlen_sse2 () at ../sysdeps/x86_64/multiarch/../strlen.S:120
No locals.
#1 0x00007fbc3f65725b in p_strdup (pool=0x5620ae47d3e0, str=0x8 <error:
Cannot access memory at address 0x8>) at strfuncs.c:51
mem = <optimized out>
len = <optimized out>
#2 0x00007fbc3f5b292a in setting_copy () at settings-parser.c:1538
strlist_info = {module_name = 0x0, defines = 0x0, defaults =
0x0, type_offset = 18446744073709551615, struct_size = 0, parent_offset
= 18446744073709551615, parent = 0x0, check_func = 0x0,
expand_check_func = 0x0, dependencies = 0x0, dynamic_parsers =
0x0}
#3 0x00007fbc3f5b2d8a in settings_dup_full () at settings-parser.c:1600
strlist_info = {module_name = 0x0, defines = 0x0, defaults =
0x0, type_offset = 18446744073709551615, struct_size = 0, parent_offset
= 18446744073709551615, parent = 0x0, check_func = 0x0,
expand_check_func = 0x0, dependencies = 0x0, dynamic_parsers =
0x0}
#4 0x00007fbc3f9547ba in mail_user_alloc (parent_event=0x0,
username=0x7fbc3fa0b24a "raw mail user", set_info=0x5620ae46e458,
set=0x5620ae430220) at mail-user.c:113
pool = 0x5620ae47d3e0
#5 0x00007fbc3f9a1dc5 in raw_storage_create_from_set
(set_info=<optimized out>, set=<optimized out>) at raw-storage.c:25
user = <optimized out>
ns = <optimized out>
ns_set = <optimized out>
mail_set = <optimized out>
error = 0x7fff7071af50 "\021"
#6 0x00005620ad66769a in client_raw_user_create (client=0x5620ae4aa8b8,
client=0x5620ae4aa8b8) at lmtp-client.c:105
sets = <optimized out>
sets = <optimized out>
#7 client_create (fd_in=17, fd_out=17, conn=0x7fff7071af50) at
lmtp-client.c:177
rcpt_param_extensions = {0x5620ad66be6b "XRCPTFORWARD", 0x0}
cap_rcpt_forward = {name = 0x5620ad66be6b "XRCPTFORWARD",
params
= 0x0}
workarounds = <optimized out>
lmtp_set = {protocol = SMTP_PROTOCOL_SMTP, capabilities =
SMTP_CAPABILITY_NONE, workarounds = (unknown: 1886498356), hostname =
0x5620ae426760 "",
login_greeting = 0x1 <error: Cannot access memory at address
0x1>, rawlog_dir = 0x0, ssl = 0x0, max_client_idle_time_msecs =
1886498432, max_pipelined_commands = 32767,
max_bad_commands = 1062726285, max_recipients = 32700,
command_limits = {max_parameters_size = 94698362529624, max_auth_size =
140446494082554, max_data_size = 140735079886496},
max_message_size = 94698362822992, mail_param_extensions =
0x2ae426758, rcpt_param_extensions = 0x7fff7071ae34, xclient_extensions
= 0x7071aec0, socket_send_buffer_size = 15936827190723348992,
socket_recv_buffer_size = 11513522008, event_parent =
0x5620ae46e150, debug = false, auth_optional = false, tls_required =
false, mail_path_allow_broken = false, rcpt_domain_optional = false}
client = 0x5620ae4aa8b8
pool = <optimized out>
#8 0x00007fbc3f5acc99 in master_service_client_connection_callback
(service=0x5620ae427130, conn=0x7fff7071af50) at master-service.c:980
No locals.
#9 0x00007fbc3f5ad015 in master_service_listen (l=0x5620ae427610) at
master-service.c:1212
service = 0x5620ae427130
conn = {fd = 17, listen_fd = 10, name = 0x5620ae4276c0
"lmtp",
remote_ip = {family = 2, u = {ip6 = {__in6_u = {__u6_addr8 =
"\n\000\003e", '\000' <repeats 11 times>, __u6_addr16 =
{10, 25859, 0,
0,
0, 0, 0, 0}, __u6_addr32 = {1694695434, 0, 0, 0}}},
ip4 = {s_addr = 1694695434}}}, local_ip = {family = 2, u = {ip6 =
{__in6_u = {__u6_addr8 = "\n\000\n\a", '\000' <repeats 11
times>,
__u6_addr16 = {10, 1802, 0, 0, 0, 0, 0, 0},
__u6_addr32 = {118095882, 0, 0, 0}}}, ip4 = {s_addr = 118095882}}},
remote_port = 50660, local_port = 24, real_remote_ip = {family = 2, u =
{
ip6 = {__in6_u = {__u6_addr8 = "\n\000\003e",
'\000'
<repeats 11 times>, __u6_addr16 = {10, 25859, 0, 0, 0, 0, 0, 0},
__u6_addr32 = {1694695434, 0, 0, 0}}}, ip4 = {s_addr = 1694695434}}},
real_local_ip = {family = 2, u = {ip6 = {__in6_u = {__u6_addr8
= "\n\000\n\a", '\000' <repeats 11 times>, __u6_addr16 =
{10, 1802, 0,
0, 0, 0, 0, 0}, __u6_addr32 = {118095882, 0, 0, 0}}}, ip4 = {
s_addr = 118095882}}}, real_remote_port = 50660,
real_local_port = 24, proxy = {hostname = 0x0, cert_common_name = 0x0,
alpn = 0x0, alpn_size = 0, ssl = false, ssl_client_cert = false},
proxied = false, fifo = false, ssl = false, accepted = true}
#10 0x00007fbc3f63904d in io_loop_call_io (io=0x5620ae5032b0) at
ioloop.c:714
ioloop = 0x5620ae4272d0
t_id = 2
__func__ = "io_loop_call_io"
#11 0x00007fbc3f63a679 in io_loop_handler_run_internal
(ioloop=ioloop at entry=0x5620ae4272d0) at ioloop-epoll.c:222
ctx = 0x5620ae42c5f0
events = <optimized out>
event = 0x5620ae42c670
--Type <RET> for more, q to quit, c to continue without paging--c
list = 0x5620ae43adc0
io = <optimized out>
tv = {tv_sec = 2147483, tv_usec = 0}
events_count = <optimized out>
msecs = <optimized out>
ret = <optimized out>
i = 0
j = <optimized out>
call = <optimized out>
__func__ = "io_loop_handler_run_internal"
#12 0x00007fbc3f6390f0 in io_loop_handler_run (ioloop=0x5620ae4272d0) at
ioloop.c:766
__func__ = "io_loop_handler_run"
#13 0x00007fbc3f639268 in io_loop_run (ioloop=0x5620ae4272d0) at
ioloop.c:739
__func__ = "io_loop_run"
#14 0x00007fbc3f5ac557 in master_service_run (service=0x5620ae427130,
callback=callback at entry=0x5620ad666fa0 <client_connected>) at
master-service.c:853
No locals.
#15 0x00005620ad666dcd in main (argc=<optimized out>, argv=<optimized
out>) at main.c:168
set_roots = {0x5620ad86e640 <smtp_submit_setting_parser_info>,
0x5620ad86e580 <lda_setting_parser_info>, 0x5620ad86e2a0
<lmtp_setting_parser_info>, 0x0}
service_flags = <optimized out>
storage_service_flags = (MAIL_STORAGE_SERVICE_FLAG_USERDB_LOOKUP
| MAIL_STORAGE_SERVICE_FLAG_TEMP_PRIV_DROP |
MAIL_STORAGE_SERVICE_FLAG_NO_LOG_INIT |
MAIL_STORAGE_SERVICE_FLAG_NO_IDLE_TIMEOUT)
tmp_base_dir = 0x5620ae41e758 ""
c = <optimized out>
error = 0x7fff707492d8 ""