[Dovecot] master: Error: service(imap): child 40100 killed with signal 11

[interfaSys sàrl]

On 13/01/2011 18:48, Timo Sirainen wrote:
> On 13.1.2011, at 20.45, interfaSys sàrl wrote:
> 
>> Hello,
>> I've just updated to 2.0.9 and I've got lots of these in the logs now.
> 
> From 2.0.8?
> 

Yes

>> Jan 13 18:57:13 master: Error: service(imap): child 40100 killed with
>> signal 11 (core not dumped - set service imap { drop_priv_before_exec=yes })
>>
>> Is there a configuration change or something else I should have done
>> while updating?
> 
> No.
> 

OK

>> I tried to get some information by loading the binary into gdb and got this:
>>
>> (gdb) bt full
>> #0  0x00000008007c71fc in kevent () from /lib/libc.so.7
> 
> It's difficult to guess what the problem could be without a usable gdb backtrace, and you need a core file for that. In FreeBSD the easiest way would probably be to enable kern.sugid_coredump sysctl. http://dovecot.org/bugreport.html has more info.

Here is the info from the core file:

Core was generated by `imap'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /usr/lib/dovecot/libdovecot-storage.so.0...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/libdovecot-storage.so.0
Reading symbols from /usr/lib/dovecot/libdovecot.so.0...(no debugging
symbols found)...done.
Loaded symbols for /usr/lib/dovecot/libdovecot.so.0
Reading symbols from /usr/lib/librt.so.1...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/librt.so.1
Reading symbols from /lib/libc.so.7...(no debugging symbols found)...done.
Loaded symbols for /lib/libc.so.7
Reading symbols from /usr/lib/dovecot/lib01_acl_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib01_acl_plugin.so
Reading symbols from /usr/lib/dovecot/lib02_imap_acl_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib02_imap_acl_plugin.so
Reading symbols from /usr/lib/dovecot/lib10_quota_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib10_quota_plugin.so
Reading symbols from /usr/lib/dovecot/lib11_imap_quota_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib11_imap_quota_plugin.so
Reading symbols from /usr/lib/dovecot/lib11_trash_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib11_trash_plugin.so
Reading symbols from /usr/lib/dovecot/lib20_autocreate_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib20_autocreate_plugin.so
Reading symbols from /usr/lib/dovecot/lib20_fts_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib20_fts_plugin.so
Reading symbols from /usr/lib/dovecot/lib20_zlib_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib20_zlib_plugin.so
Reading symbols from /lib/libz.so.5...(no debugging symbols found)...done.
Loaded symbols for /lib/libz.so.5
Reading symbols from /usr/lib/libbz2.so.4...(no debugging symbols
found)...done.
Loaded symbols for /usr/lib/libbz2.so.4
Reading symbols from /usr/lib/dovecot/lib21_fts_squat_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib21_fts_squat_plugin.so
Reading symbols from /usr/lib/dovecot/lib30_imap_zlib_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib30_imap_zlib_plugin.so
Reading symbols from /usr/lib/dovecot/lib90_antispam_plugin.so...(no
debugging symbols found)...done.
Loaded symbols for /usr/lib/dovecot/lib90_antispam_plugin.so
Reading symbols from /libexec/ld-elf.so.1...(no debugging symbols
found)...done.
Loaded symbols for /libexec/ld-elf.so.1
#0  0x0000000800430880 in dlsym () from /libexec/ld-elf.so.1
(gdb) bt full
#0  0x0000000800430880 in dlsym () from /libexec/ld-elf.so.1
No symbol table info available.
#1  0x00000008004309bd in dlclose () from /libexec/ld-elf.so.1
No symbol table info available.
#2  0x0000000800597fd9 in module_dir_unload () from
/usr/lib/dovecot/libdovecot.so.0
No symbol table info available.
#3  0x0000000000000000 in ?? ()
No symbol table info available.
#4  0x0000000800a37840 in ?? ()
No symbol table info available.
#5  0x00007fffffffe6e0 in ?? ()
No symbol table info available.
#6  0x00007fffffffecca in ?? ()
No symbol table info available.
#7  0x0000000000424b40 in imap_ext_commands.12434 ()
No symbol table info available.
#8  0x000000080049a281 in mail_storage_service_deinit () from
/usr/lib/dovecot/libdovecot-storage.so.0
No symbol table info available.
#9  0x0000000000000000 in ?? ()
No symbol table info available.
#10 0x00000000004214eb in main ()
No symbol table info available.