Got it.
Here is full backtrace output.
# gdb /usr/local/libexec/dovecot/imap 1
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This GDB was configured as "amd64-marcel-freebsd"...(no debugging
symbols found)...
Attaching to program: /usr/local/libexec/dovecot/imap, process 1
ptrace: Invalid argument.
Core was generated by `imap'.
Program terminated with signal 6, Aborted.
Reading symbols from /usr/local/lib/dovecot/libdovecot-lda.so.0...(no
debugging symbols found)...done.
Loaded symbols for /usr/local/lib/dovecot/libdovecot-lda.so.0
Reading symbols from
/usr/local/lib/dovecot/libdovecot-storage.so.0...(no debugging symbols
found)...done.
Loaded symbols for /usr/local/lib/dovecot/libdovecot-storage.so.0
Reading symbols from /usr/local/lib/dovecot/libdovecot.so.0...(no
debugging symbols found)...done.
Loaded symbols for /usr/local/lib/dovecot/libdovecot.so.0
Reading symbols from /lib/libc.so.7...(no debugging symbols
found)...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /usr/lib/libkrb5.so.11...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libkrb5.so.11
Reading symbols from /usr/lib/libgssapi.so.10...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libgssapi.so.10
Reading symbols from /usr/lib/libgssapi_krb5.so.10...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/libgssapi_krb5.so.10
Reading symbols from /usr/lib/libasn1.so.11...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libasn1.so.11
Reading symbols from /usr/lib/libcom_err.so.5...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libcom_err.so.5
Reading symbols from /lib/libcrypt.so.5...(no debugging symbols
found)...done.
Loaded symbols for /lib/libcrypt.so.5
Reading symbols from /lib/libcrypto.so.8...(no debugging symbols
found)...done.
Loaded symbols for /lib/libcrypto.so.8
Reading symbols from /usr/lib/libhx509.so.11...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libhx509.so.11
Reading symbols from /usr/lib/libroken.so.11...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libroken.so.11
Reading symbols from /usr/lib/libwind.so.11...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libwind.so.11
Reading symbols from /usr/lib/libheimbase.so.11...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libheimbase.so.11
Reading symbols from /usr/lib/libprivateheimipcc.so.11...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/libprivateheimipcc.so.11
Reading symbols from /lib/libthr.so.3...(no debugging symbols
found)...done.
Loaded symbols for /lib/libthr.so.3
Reading symbols from /usr/local/lib/dovecot/lib01_acl_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/local/lib/dovecot/lib01_acl_plugin.so
Reading symbols from
/usr/local/lib/dovecot/lib02_imap_acl_plugin.so...(no debugging symbols
found)...done.
Loaded symbols for /usr/local/lib/dovecot/lib02_imap_acl_plugin.so
Reading symbols from /usr/local/lib/dovecot/lib10_quota_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/local/lib/dovecot/lib10_quota_plugin.so
Reading symbols from
/usr/local/lib/dovecot/lib11_imap_quota_plugin.so...(no debugging
symbols found)...done.
Loaded symbols for /usr/local/lib/dovecot/lib11_imap_quota_plugin.so
Reading symbols from /usr/local/lib/dovecot/lib11_trash_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/local/lib/dovecot/lib11_trash_plugin.so
Reading symbols from
/usr/local/lib/dovecot/lib90_antispam_plugin.so...(no debugging symbols
found)...done.
Loaded symbols for /usr/local/lib/dovecot/lib90_antispam_plugin.so
Reading symbols from /usr/local/lib/compat/pkg/nss_winbind.so.1...(no
debugging symbols found)...done.
Loaded symbols for /usr/local/lib/compat/pkg/nss_winbind.so.1
Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols
found)...done.
Loaded symbols for /libexec/ld-elf.so.1
#0 0x000000001117655a in thr_kill () from /lib/libc.so.7
[New Thread 13616000 (LWP 100216/<unknown>)]
(gdb) bt
#0 0x000000001117655a in thr_kill () from /lib/libc.so.7
#1 0x000000001117652b in raise () from /lib/libc.so.7
#2 0x0000000011176499 in abort () from /lib/libc.so.7
#3 0x0000000010e2af54 in default_error_handler () from
/usr/local/lib/dovecot/libdovecot.so.0
#4 0x0000000010e2bc5b in i_set_failure_ignore_errors () from
/usr/local/lib/dovecot/libdovecot.so.0
#5 0x0000000010e2b1f9 in i_fatal () from
/usr/local/lib/dovecot/libdovecot.so.0
#6 0x0000000010aa190a in mail_namespace_find () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
#7 0x000000001402e7e2 in trash_plugin_deinit () from
/usr/local/lib/dovecot/lib11_trash_plugin.so
#8 0x0000000010aaf20b in hook_mail_user_created () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
#9 0x0000000010ab374f in mail_user_init () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
#10 0x0000000010ab1c52 in mail_storage_service_next () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
#11 0x0000000010ab2435 in mail_storage_service_lookup_next () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
#12 0x0000000000425896 in client_create_from_input ()
#13 0x0000000000425fb2 in main ()
(gdb) bt full
#0 0x000000001117655a in thr_kill () from /lib/libc.so.7
No symbol table info available.
#1 0x000000001117652b in raise () from /lib/libc.so.7
No symbol table info available.
#2 0x0000000011176499 in abort () from /lib/libc.so.7
No symbol table info available.
#3 0x0000000010e2af54 in default_error_handler () from
/usr/local/lib/dovecot/libdovecot.so.0
No symbol table info available.
#4 0x0000000010e2bc5b in i_set_failure_ignore_errors () from
/usr/local/lib/dovecot/libdovecot.so.0
No symbol table info available.
#5 0x0000000010e2b1f9 in i_fatal () from
/usr/local/lib/dovecot/libdovecot.so.0
No symbol table info available.
#6 0x0000000010aa190a in mail_namespace_find () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#7 0x000000001402e7e2 in trash_plugin_deinit () from
/usr/local/lib/dovecot/lib11_trash_plugin.so
No symbol table info available.
#8 0x0000000010aaf20b in hook_mail_user_created () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#9 0x0000000010ab374f in mail_user_init () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#10 0x0000000010ab1c52 in mail_storage_service_next () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#11 0x0000000010ab2435 in mail_storage_service_lookup_next () from
/usr/local/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#12 0x0000000000425896 in client_create_from_input ()
No symbol table info available.
#13 0x0000000000425fb2 in main ()
No symbol table info available.
(gdb) quit
Aki Tuomi ????? 2017-02-28 18:34:> Your backtrace would've been informative already if you had issued bt
> full. Just opening it with gdb is not sufficient.
--
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Max Kostikov
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