On FreeBSD/amd64 8.2-STABLE as of Sun Feb 27. I dismissed this problem the first
time (a week or two ago), but just saw it again. Something triggers syslogd into
spinning all available CPU -- while not logging anything.
Attempts to log anything -- such as by invoking logger(1) -- simply hang.
sendmail hangs too -- now new e-mail is coming. It is not pretty.
ktrace-ing the process yields empty file -- it is not doing system-calls, while
spinning.
Attaching the debugger several times shows the same stack:
#0 0x00000008007cb1d6 in _pthread_mutex_init_calloc_cb () from
/lib/libc.so.7
#1 0x00000008007cd9fb in _pthread_mutex_init_calloc_cb () from
/lib/libc.so.7
#2 0x00000008007d4825 in free () from /lib/libc.so.7
#3 0x00000008007c5aab in catopen () from /lib/libc.so.7
#4 0x00000008007c5410 in strerror_r () from /lib/libc.so.7
#5 0x00000008007c556d in strerror () from /lib/libc.so.7
#6 0x0000000000403c10 in ?? ()
...
Among the logging-destinations in my syslog.conf there is a program, that exits
sometimes -- but never "too fast". Normally, syslogd simply restarts it without
an issue...
Any ideas? Thanks!
-mi
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