[Dovecot] Segmentation fault

Alex Domoradov alex.hha at gmail.com
Mon Feb 10 19:25:11 UTC 2014 

Yes, I have tried with "plain" value and it works fine. But is it
normal that not valid value
cause segmentation fault at all?

On Mon, Feb 10, 2014 at 5:44 PM, Timo Sirainen <tss at iki.fi> wrote:
> Did you try with
>
> a) http://hg.dovecot.org/dovecot-2.2/rev/afd3cfcf1bcb patch which should fix the crash
>
> and/or
>
> b) Changing auth_verbose_passwords=plain (because "yes" isn't a valid value)
>
> On 10.2.2014, at 4.58, Alex Domoradov <alex.hha at gmail.com> wrote:
>
>> Any update?
>>
>> On Sat, Feb 8, 2014 at 4:09 PM, Alex Domoradov <alex.hha at gmail.com> wrote:
>>> I have installed debug packages excluding sqlite and dovecot and tried
>>> one more time
>>>
>>> # echo "/var/core/%p" > /proc/sys/kernel/core_pattern
>>> # doveconf -n
>>> # 2.2.10: /etc/dovecot/dovecot.conf
>>> # OS: Linux 2.6.32-431.3.1.el6.x86_64 x86_64 CentOS release 6.5 (Final)
>>> Segmentation fault (core dumped)
>>>
>>> # gdb /usr/bin/doveconf /var/core/23290
>>> GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6_4.1)
>>> Copyright (C) 2010 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-redhat-linux-gnu".
>>> For bug reporting instructions, please see:
>>> <http://www.gnu.org/software/gdb/bugs/>...
>>> Reading symbols from /usr/bin/doveconf...(no debugging symbols found)...done.
>>> [New Thread 23290]
>>> Reading symbols from /usr/lib64/dovecot/libdovecot.so.0...done.
>>> Loaded symbols for /usr/lib64/dovecot/libdovecot.so.0
>>> Reading symbols from /lib64/libc-2.12.so...Reading symbols from
>>> /usr/lib/debug/lib64/libc-2.12.so.debug...done.
>>> done.
>>> Loaded symbols for /lib64/libc-2.12.so
>>> Reading symbols from /lib64/libdl-2.12.so...Reading symbols from
>>> /usr/lib/debug/lib64/libdl-2.12.so.debug...done.
>>> done.
>>> Loaded symbols for /lib64/libdl-2.12.so
>>> Reading symbols from /lib64/librt-2.12.so...Reading symbols from
>>> /usr/lib/debug/lib64/librt-2.12.so.debug...done.
>>> done.
>>> Loaded symbols for /lib64/librt-2.12.so
>>> Reading symbols from /lib64/ld-2.12.so...Reading symbols from
>>> /usr/lib/debug/lib64/ld-2.12.so.debug...done.
>>> done.
>>> Loaded symbols for /lib64/ld-2.12.so
>>> Reading symbols from /lib64/libpthread-2.12.so...Reading symbols from
>>> /usr/lib/debug/lib64/libpthread-2.12.so.debug...done.
>>> [Thread debugging using libthread_db enabled]
>>> done.
>>> Loaded symbols for /lib64/libpthread-2.12.so
>>> Reading symbols from /lib64/libnss_files-2.12.so...Reading symbols
>>> from /usr/lib/debug/lib64/libnss_files-2.12.so.debug...done.
>>> done.
>>> Loaded symbols for /lib64/libnss_files-2.12.so
>>> Core was generated by `doveconf -n'.
>>> Program terminated with signal 11, Segmentation fault.
>>> #0  __strlen_sse2 () at ../sysdeps/x86_64/strlen.S:32
>>> 32              movdqu  (%rdi), %xmm1
>>> Missing separate debuginfos, use: debuginfo-install dovecot-2.2.10-1.el6.x86_64
>>> (gdb) bt full
>>> #0  __strlen_sse2 () at ../sysdeps/x86_64/strlen.S:32
>>> No locals.
>>> #1  0x00007f139828e65d in p_strdup (pool=0x10afab0, str=0x288 <Address
>>> 0x288 out of bounds>) at strfuncs.c:41
>>>        mem = <value optimized out>
>>>        len = <value optimized out>
>>> #2  0x000000000040528f in config_request_get_strings ()
>>> No symbol table info available.
>>> #3  0x000000000040c3ce in config_export_finish ()
>>> No symbol table info available.
>>> #4  0x00000000004054d4 in config_dump_human_output ()
>>> No symbol table info available.
>>> #5  0x0000000000405dff in config_dump_human ()
>>> No symbol table info available.
>>> #6  0x0000000000406bcf in main ()
>>> No symbol table info available.
>>>
>>> Is it possible to build debuginfo for the dovecot package?
>>>
>>> On Sat, Feb 8, 2014 at 3:15 PM, Alex Domoradov <alex.hha at gmail.com> wrote:
>>>> # gdb --args doveconf -n
>>>> GNU gdb (GDB) Red Hat Enterprise Linux (7.2-60.el6_4.1)
>>>> Copyright (C) 2010 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-redhat-linux-gnu".
>>>> For bug reporting instructions, please see:
>>>> <http://www.gnu.org/software/gdb/bugs/>...
>>>> Reading symbols from /usr/bin/doveconf...(no debugging symbols found)...done.
>>>> (gdb) run
>>>> Starting program: /usr/bin/doveconf -n
>>>> [Thread debugging using libthread_db enabled]
>>>> # 2.2.10: /etc/dovecot/dovecot.conf
>>>> # OS: Linux 2.6.32-431.3.1.el6.x86_64 x86_64 CentOS release 6.5 (Final)
>>>>
>>>> Program received signal SIGSEGV, Segmentation fault.
>>>> 0x00007ffff77f9451 in __strlen_sse2 () from /lib64/libc.so.6
>>>> Missing separate debuginfos, use: debuginfo-install dovecot-2.2.10-1.el6.x86_64
>>>> (gdb) bt full
>>>> #0  0x00007ffff77f9451 in __strlen_sse2 () from /lib64/libc.so.6
>>>> No symbol table info available.
>>>> #1  0x00007ffff7b9665d in p_strdup (pool=0x6adac0, str=0x288 <Address
>>>> 0x288 out of bounds>) at strfuncs.c:41
>>>>        mem = <value optimized out>
>>>>        len = <value optimized out>
>>>> #2  0x000000000040528f in config_request_get_strings ()
>>>> No symbol table info available.
>>>> #3  0x000000000040c3ce in config_export_finish ()
>>>> No symbol table info available.
>>>> #4  0x00000000004054d4 in config_dump_human_output ()
>>>> No symbol table info available.
>>>> #5  0x0000000000405dff in config_dump_human ()
>>>> No symbol table info available.
>>>> #6  0x0000000000406bcf in main ()
>>>> No symbol table info available.
>>>>
>>>> I have tried to install debug packages but without success
>>>>
>>>> # debuginfo-install dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo for main pkg: 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> bzip2-libs-1.0.5-7.el6_0.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package libcap-2.16-5.5.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> libcom_err-1.41.12-18.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> openssl-1.0.1e-16.el6_5.4.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> openssl-1.0.1e-16.el6_5.4.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> openssl-1.0.1e-16.el6_5.4.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> 1:dovecot-2.2.10-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package expat-2.0.1-11.el6_2.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> krb5-libs-1.10.3-10.el6_4.6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> krb5-libs-1.10.3-10.el6_4.6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> krb5-libs-1.10.3-10.el6_4.6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> krb5-libs-1.10.3-10.el6_4.6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> krb5-libs-1.10.3-10.el6_4.6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> openldap-2.4.23-34.el6_5.1.x86_64
>>>> Could not find debuginfo pkg for dependency package pam-1.1.1-17.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package pam-1.1.1-17.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package glibc-2.12-1.132.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package sqlite-3.6.20-1.el6.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> openssl-1.0.1e-16.el6_5.4.x86_64
>>>> Could not find debuginfo pkg for dependency package
>>>> openssl-1.0.1e-16.el6_5.4.x86_64
>>>> Could not find debuginfo pkg for dependency package zlib-1.2.3-29.el6.x86_64
>>>> No debuginfo packages available to install
>>>>
>>>> On Fri, Feb 7, 2014 at 11:44 PM, Reindl Harald <h.reindl at thelounge.net> wrote:
>>>>> no - a typo in a config does not qualify a segfault at all
>>>>>
>>>>> Am 07.02.2014 22:42, schrieb Alex Domoradov:
>>>>>> Sorry, it was my fault. With "plain" value all works fine.
>>>>>>
>>>>>> Thanks for the help
>>>>>>
>>>>>> On Fri, Feb 7, 2014 at 10:54 PM, Timo Sirainen <tss at iki.fi> wrote:
>>>>>>> On 7.2.2014, at 15.22, Timo Sirainen <tss at iki.fi> wrote:
>>>>>>>
>>>>>>>>> auth_verbose_passwords = yes
>>>>>>>>>
>>>>>>>> I guess it's related to auth_verbose_passwords setting, but I can't immediately see why it would crash there.
>>>>>>>
>>>>>>> Oh, first I thought there were two settings related to this :) Anyway, the reason is simple: "yes" isn't a valid value here. Either use "plain" or "sha1". Although I suppose "yes" could be an alias for "plain" to make people's life easier. So:
>>>>>>>
>>>>>>> http://hg.dovecot.org/dovecot-2.2/rev/afd3cfcf1bcb
>>>>>>> http://hg.dovecot.org/dovecot-2.2/rev/27ac53f11f1f
>>>>>
>

More information about the dovecot mailing list