[Dovecot] Segmentation fault with vpopmail auth

Samuel Montosa samuel at dameuntoque.com
Mon Apr 4 12:07:00 EEST 2011


I am new in the list.

First, excuse my english. I am not native speaker.

A few hours ago I had a problem with process dovecot-auth and vpopmail.

Versions I had using, working, were:

vpopmail 5.4.28

I tried to compile dovecot-1.2.16. Compilation was well but in  
execution system said:

kernel: dovecot-auth[2842]: segfault at 645f20 ip 0000000000645f20 sp  
00007fff69bd3708 error 15 in dovecot-auth[645000+1000]

and so.

Then, I tried to recompile dovecot-1.1.12 (original version I had  
working) but system said the same.

After investigation, I saw I had mixed of vpopmail versions. Problem  
was I had /home/vpopmail/lib/libvpopmail.so in my system. When this  
file is present, compilation of dovecot link dovocot-auth to dynamic  
library libvpopmail.so, but it is not necessary since I had my system  
working using vpopmail without this .so.

What I recommend is to compile a fresh vpopmail. Now I am using  
vpopmail-5.4.32 (at now, stable version) and dovecot-1.2.16. First,  
compile vpopmail and make sure you purge /home/vpopmail/lib/ of  
libvpopmail.so. Fresh installations of vpopmail, from tar.gz (not from  
SVN) _doesn't_ build libvpopmail.so, so make sure this file doesn't  
exist before you compile dovecot.

For me, library dependencies are:

mymachine:/usr/local/src/dovecot-1.2.16# ldd src/auth/dovecot-auth
         linux-vdso.so.1 =>  (0x00007fff63df5000)
         libpam.so.0 => /lib/libpam.so.0 (0x00007f9f925e1000)
         libcrypt.so.1 => /lib/libcrypt.so.1 (0x00007f9f923aa000)
         libdl.so.2 => /lib/libdl.so.2 (0x00007f9f921a5000)
         librt.so.1 => /lib/librt.so.1 (0x00007f9f91f9d000)
         libc.so.6 => /lib/libc.so.6 (0x00007f9f91c3c000)
         /lib64/ld-linux-x86-64.so.2 (0x00007f9f927f7000)
         libpthread.so.0 => /lib/libpthread.so.0 (0x00007f9f91a1f000)

I hope this helps. It was a strange "bug".


Samuel Montosa

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