[syslog-ng] missing logs when SIGHUP

Mon Dec 3 18:58:21 CET 2007

Here is the backtrace, (running under ubuntu 7.10 i386):

root at krait[0]syslog-ng-2.0.git# /opt/syslog-ng-2.0.git/sbin/syslog-ng
Segmentation fault (core dumped)
root at krait[139]syslog-ng-2.0.git# gdb /opt/syslog-ng-2.0.git/sbin/syslog-ng
-c core
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This GDB was configured as "i486-linux-gnu"...
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".

warning: Can't read pathname for load map: Input/output error.
Reading symbols from /lib/tls/i686/cmov/libnsl.so.1...done.
Loaded symbols for /lib/tls/i686/cmov/libnsl.so.1
Reading symbols from /lib/tls/i686/cmov/librt.so.1...done.
Loaded symbols for /lib/tls/i686/cmov/librt.so.1
Reading symbols from /lib/tls/i686/cmov/libc.so.6...done.
Loaded symbols for /lib/tls/i686/cmov/libc.so.6
Reading symbols from /lib/tls/i686/cmov/libpthread.so.0...done.
Loaded symbols for /lib/tls/i686/cmov/libpthread.so.0
Reading symbols from /lib/ld-linux.so.2...done.
Loaded symbols for /lib/ld-linux.so.2
Reading symbols from /lib/tls/i686/cmov/libnss_compat.so.2...done.
Loaded symbols for /lib/tls/i686/cmov/libnss_compat.so.2
Reading symbols from /lib/tls/i686/cmov/libnss_nis.so.2...done.
Loaded symbols for /lib/tls/i686/cmov/libnss_nis.so.2
Reading symbols from /lib/tls/i686/cmov/libnss_files.so.2...done.
Loaded symbols for /lib/tls/i686/cmov/libnss_files.so.2
Core was generated by `/opt/syslog-ng-2.0.git/sbin/syslog-ng'.
Program terminated with signal 11, Segmentation fault.
#0  0x08057bd5 in affile_dw_set_owner (self=0x0, owner=0x8098858) at
affile.c:381
381       if (self->owner)
(gdb) bt full
#0  0x08057bd5 in affile_dw_set_owner (self=0x0, owner=0x8098858) at
affile.c:381
No locals.
#1  0x08058345 in affile_dd_init (s=0x8098858, cfg=0x8091048,
persist=0x8098980) at affile.c:631
        self = (AFFileDestDriver *) 0x8098858
#2  0x08054a8d in log_dest_group_init (s=0x8098938, cfg=0x8091048,
persist=0x8098980) at dgroup.c:50
        self = (LogDestGroup *) 0x8098938
        p = (LogDriver *) 0x8098858
#3  0x080550b1 in log_center_init_component (key=0x8098968 "df_syslog-ng",
value=0x8098938, self=0x8093000)
    at center.c:177
No locals.
#4  0x08061152 in g_hash_table_foreach ()
No symbol table info available.
#5  0x08055455 in log_center_init (s=0x8093000, cfg=0x8091048,
persist=0x8098980) at center.c:262
        self = (LogCenter *) 0x8093000
        i = 2
        j = 1
#6  0x0804c9f9 in cfg_init (cfg=0x8091048, persist=0x8098980) at cfg.c:212
        regerr = 438
#7  0x0804b5a2 in main (argc=1, argv=0xbfdb0eb4) at main.c:411
        cfg = (GlobalConfig *) 0x8091048
        syslog_ng_options = {{name = 0x808198b "cfgfile", has_arg = 1, flag
= 0x0, val = 102}, {
    name = 0x8081993 "pidfile", has_arg = 1, flag = 0x0, val = 112}, {name =
0x808199b "debug", has_arg = 0,
    flag = 0x0, val = 100}, {name = 0x80819a1 "syntax-only", has_arg = 0,
flag = 0x0, val = 115}, {
    name = 0x80819ad "verbose", has_arg = 0, flag = 0x0, val = 118}, {name =
0x80819b5 "foreground", has_arg = 0,
    flag = 0x0, val = 70}, {name = 0x80819c0 "help", has_arg = 0, flag =
0x0, val = 104}, {
    name = 0x808189b "version", has_arg = 0, flag = 0x0, val = 86}, {name =
0x80819c5 "chroot", has_arg = 1,
    flag = 0x0, val = 67}, {name = 0x80819cc "user", has_arg = 1, flag =
0x0, val = 117}, {
    name = 0x80819d1 "group", has_arg = 1, flag = 0x0, val = 103}, {name =
0x80819d7 "stderr", has_arg = 0,
    flag = 0x0, val = 101}, {name = 0x80819de "yydebug", has_arg = 0, flag =
0x0, val = 121}, {name = 0x0,
    has_arg = 0, flag = 0x0, val = 0}}
        syntax_only = 0
        log_to_stderr = 0
        persist = (PersistentConfig *) 0x8098980
        opt = -1
        rc = -1208502272
(gdb) quit

// Martin

On Dec 3, 2007 6:12 PM, Balazs Scheidler <bazsi at balabit.hu> wrote:

>
> On Mon, 2007-12-03 at 17:08 +0100, Martin Ervius wrote:
> > I downloaded a snapshot from:
> >
> http://git.balabit.hu/?p=bazsi/syslog-ng-2.0.git;a=snapshot;h=a33ee30c1e059c1c6dc9839047379f3f3a8dfa4d.
> It compiled ok, but gets a segmentation fault when initializing (it can
> display version and help info), but if I run with my cfg file it dies.
> >
> > Here's the last part of strace when i run it:
> >
> > open("/opt/syslog- ng-2.0.git/var/syslog-ng.persist", O_RDONLY|
> > O_LARGEFILE) = -1 ENOENT (No such file or directory)
> > socket(PF_INET, SOCK_STREAM, IPPROTO_IP) = 3
> > fcntl64(3, F_GETFL)                     = 0x2 (flags O_RDWR)
> > fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
> > fcntl64(3, F_GETFD)                     = 0
> > fcntl64(3, F_SETFD, FD_CLOEXEC)         = 0
> > setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
> > bind(3, {sa_family=AF_INET, sin_port=htons(514), sin_addr=inet_addr("
> > 0.0.0.0")}, 16) = 0
> > listen(3, 255)                          = 0
> > setsockopt(3, SOL_SOCKET, SO_KEEPALIVE, [0], 4) = 0
> > --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> > kill(31071, SIGSEGV)                    = 0
> > sigreturn()                             = ? (mask now [])
> > --- SIGSEGV (Segmentation fault) @ 0 (0) ---
> > +++ killed by SIGSEGV +++
> > Process 31071 detached
> >
>
> Hmm... I'd appreciatea backtrace using gdb:
>
> gdb /opt/syslog-ng-2.0.git/sbin/syslog-ng -c <core file>
> (gdb) bt full
>
> all assuming that you have debug information.
>
> --
> Bazsi
>
> _______________________________________________
> syslog-ng maillist  -  syslog-ng at lists.balabit.hu
> https://lists.balabit.hu/mailman/listinfo/syslog-ng
> Frequently asked questions at http://www.campin.net/syslog-ng/faq.html
>
>
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