Re: spamass-milter terminated with signal 6

[Mike Tancsa]

I see this all the time. Not sure if its a bug in the milter, or libc_r. I 
'did a microsoft' and just wrote a little controlling daemon to respawn the 
process if it does a SIGABORT.



#include <sys/types.h>
#include <sys/wait.h>
#include <syslog.h>
#include <stdio.h>
#include <stdarg.h>



int main (void) {
        pid_t   pid;
        int     status;
        extern char **environ;
        static char program[] = "/usr/local/etc/spamass-milter.sh";
        static char *argv[] = {"/usr/local/etc/spamass-milter.sh", 
"start",NULL};

        while(1) {
                if ( (pid = fork()) < 0) {
                        abort("fork error");}
                else if ( pid == 0 ) { /* child */
                        status = execve(program,argv, environ);
                        syslog(LOG_ALERT|LOG_LOCAL1,"on signal %d",status);
                        exit(127);
                }
                syslog(LOG_ALERT|LOG_LOCAL1, "pid is %d\n",pid);
                /* parent process */

                if ( (pid = waitpid(pid, &status,0)) < 0)
                        abort("waitpid error");
                printf("\n our exit status was %d \n",status);
                syslog(LOG_ALERT|LOG_LOCAL1,"process exiting on signal 
%d",status);
                sleep(2);
                }
        }




At 04:11 PM 02/06/2003 -0400, Valentin Chopov wrote:
> Hi all,
>
>
> I have a small problem with spamass-milter.
> I'm running it on FreeBSD 4.8.
> It core dumps about every 30-60min
> Here is the gdb info:
>
> bash-2.05b# gdb -c spamass-milter.core  /usr/local/sbin/spamass-milter
> GNU gdb 4.18 (FreeBSD)
> Copyright 1998 Free Software Foundation, Inc.
> GDB is free software, covered by the GNU General Public License, and you
> are
> welcome to change it and/or distribute copies of it under certain
> conditions.
> Type "show copying" to see the conditions.
> There is absolutely no warranty for GDB.  Type "show warranty" for
> details.
> This GDB was configured as "i386-unknown-freebsd"...Deprecated bfd_read
> called at
> /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
> line 2627 in elfstab_build_psymtabs
> Deprecated bfd_read called at
> /usr/src/gnu/usr.bin/binutils/gdb/../../../../contrib/gdb/gdb/dbxread.c
> line 933 in fill_symbuf
>
> Core was generated by `spamass-milter'.
> Program terminated with signal 6, Abort trap.
> Reading symbols from /usr/lib/libmilter.so.2...done.
> Reading symbols from /usr/lib/libstdc++.so.3...done.
> Reading symbols from /usr/lib/libm.so.2...done.
> Reading symbols from /usr/lib/libc_r.so.4...done.
> Reading symbols from /usr/libexec/ld-elf.so.1...done.
> #0  0x2811bba0 in kill () from /usr/lib/libc_r.so.4
> (gdb) bt
> #0  0x2811bba0 in kill () from /usr/lib/libc_r.so.4
> #1  0x28169dfe in abort () from /usr/lib/libc_r.so.4
> #2  0x280bc25f in __default_terminate () from /usr/lib/libstdc++.so.3
> #3  0x280bc26d in __terminate () from /usr/lib/libstdc++.so.3
> #4  0x280bc54b in __sjthrow () from /usr/lib/libstdc++.so.3
> #5  0x804e2f1 in mlfi_eom (ctx=0x807c380) at spamass-milter.cpp:629
> #6  0x28077c0f in mi_clr_macros () from /usr/lib/libmilter.so.2
> #7  0x28077100 in mi_engine () from /usr/lib/libmilter.so.2
> #8  0x28076d79 in mi_handle_session () from /usr/lib/libmilter.so.2
> #9  0x2807659e in mi_thread_handle_wrapper () from /usr/lib/libmilter.so.2
> #10 0x280f6128 in _thread_start () from /usr/lib/libc_r.so.4
> #11 0xbfadcffc in ?? ()
> (gdb)
>
>
> I couldn't find nothing suspicious at spamass-milter.cpp:629
>
>   } catch (string& problem)
>     {
>       throw_error(problem);
>       smfi_setpriv(ctx, static_cast<void*>(0));
>       delete assassin;
>       debug(1, "mlfi_eom: exit");
>       return SMFIS_TEMPFAIL;    <---line 629
>     };
>
> BTW, if I include a line after this line (e.g. debug(0,...)) the gdb/bt
> shows spamass-milter.cpp:630.
>
> Any ideas with this?
>
> Thanks,
> Val
>
>
>
> ==
> Valentin S. Chopov, CC[ND]P
> Sys/Net Admin
> SEI Data Inc.
> E-Mail: address@hidden
> ==
>
>
>
>
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