Hi all, dovecot auth service is failing when using an inet_service. The configuration is essentially:
service auth {
inet_listener {
address = *
port = 12345
}
unix_listener auth-userdb {
group = vmail
mode = 0666
user = vmail
}
}
When I connect to port 12345 (real IMAP client or telnet doesn't make a
difference), the auth service crashes.
Nov 19 22:21:54 imap.linexus.de dovecot[7195]: auth: Panic:
epoll_ctl(add, 13) failed: Operation not permitted (fd doesn't support
epoll)
Nov 19 22:21:54 imap.linexus.de dovecot[7195]: auth: Error: Raw
backtrace: /usr/lib64/dovecot/libdovecot.so.0(backtrace_append+0x46)
[0x7f9319f89486] ->
/usr/lib64/dovecot/libdovecot.so.0(backtrace_get+0x22) [0x7f9319f895a2]
-> /usr/lib64/dovecot/libdovecot.so.0(+0x10a41b) [0x7f9319f9841b] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x10a4b7) [0x7f9319f984b7] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x5d11a) [0x7f9319eeb11a] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x609b0) [0x7f9319eee9b0] ->
/usr/lib64/dovecot/libdovecot.so.0(+0x1215ba) [0x7f9319faf5ba] ->
/usr/lib64/dovecot/libdovecot.so.0(io_add_to+0x1d) [0x7f9319faf62d] ->
/usr/lib64/dovecot/libdovecot.so.0(io_add+0x28) [0x7f9319faf668] ->
/usr/lib64/dovecot/libdovecot.so.0(master_service_io_listeners_add+0x8a
) [0x7f9319f1d16a] ->
/usr/lib64/dovecot/libdovecot.so.0(master_service_init_finish+0xff)
[0x7f9319f24bdf] -> dovecot/auth(main+0x389) [0x55745603a4f9] ->
/lib64/libc.so.6(+0x3feb0) [0x7f931963feb0] ->
/lib64/libc.so.6(__libc_start_main+0x80) [0x7f931963ff60] ->
dovecot/auth(_start+0x25) [0x55745603a715]
System info (sysreport attached):
# 2.3.16 (7e2e900c1a): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.5.16 (09c29328)
# OS: Linux 5.14.0-383.el9.x86_64 x86_64 CentOS Stream release 9
This exact configuration is known to work on this system:
# 2.2.33.2 (d6601f4ec): /etc/dovecot/dovecot.conf
# Pigeonhole version 0.4.21 (92477967)
I tried for almost two hours to get a core dump for this, but finally
gave up. I followed https://www.dovecot.org/bugreport-mail/#coredumps
and other sources but the best I could get was
Nov 19 22:21:54 imap.linexus.de dovecot[7195]: auth: Fatal: master:
service(auth): child 7198 killed with signal 6 (core not dumped -
https://dovecot.org/bugreport.html#coredumps - core wasn't writable?)
for
cat /proc/sys/kernel/core_pattern
/tmp/core.%e.%p
(which is 1777).
Any help to get this resolved would be much appreciated!
Thanks and best regards
Alex
dovecot-sysreport-imap.linexus.de-1700427979.tar.gz
Description: application/compressed-tar
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