Red Hat Bugzilla – Bug 125051
xinetd loop in malloc_consolidate, trying to write to syslog
Last modified: 2014-08-31 19:26:16 EDT
Description of problem: I have some repeateable problem with xinetd under RH9, it fails to infinite loop and has to be restarted manually, here is the sample: $ ps axfw 28663 ? R 8394:10 xinetd -stayalive -pidfile /var/run/xinetd.pid 19683 ? Z 0:00 \_ [popa3d <defunct>] 20709 ? Z 0:00 \_ [popa3d <defunct>] 21154 ? Z 0:00 \_ [popa3d <defunct>] 21216 ? Z 0:00 \_ [popa3d <defunct>] # gdb /usr/sbin/xinetd --pid 28663 GNU gdb Red Hat Linux (5.3post-0.20021129.18rh) [skip] 0x400f0f43 in malloc_consolidate () from /lib/libc.so.6 (gdb) bt #0 0x400f0f43 in malloc_consolidate () from /lib/libc.so.6 #1 0x400f0615 in _int_malloc () from /lib/libc.so.6 #2 0x400ef8a0 in malloc () from /lib/libc.so.6 #3 0x400e74c4 in open_memstream () from /lib/libc.so.6 #4 0x40153cf4 in vsyslog () from /lib/libc.so.6 #5 0x40153c65 in syslog () from /lib/libc.so.6 #6 0x08062242 in syslog_write () #7 0x08061971 in xlog_write () #8 0x08052cb1 in svc_log_success () #9 0x0805991a in server_start () #10 0x080597bb in server_run () #11 0x0805ab0c in svc_request () #12 0x08053772 in main_loop () #13 0x0805356e in main () #14 0x4009862d in __libc_start_main () from /lib/libc.so.6 Version-Release number components: glibc-2.3.2-27.9.7 xinetd-2.3.11-1.9.0 How reproducible: The problem is that I can't provide exact steps to reproduce that, but probably that's related to some memory shortage. I just notice such situation quite often on loaded machines. Any help on how to track that problem more precisely is welcome.
Created attachment 100793 [details] Here is the actual loop which is being performed
Red Hat Linux 9 is out of support these days. If you can reproduce the problem with the more recent xinetd included in Fedora Core 2, open a new bug on it.