Messages in this thread | | | Date | Tue, 17 Aug 1999 17:00:47 -0400 | From | Eric Buddington <> | Subject | connect() hang under 2.1.11-ac3 |
| |
Hi.
Linux-2.2.11-ac3 on a K6-2/333. Mostly Debian software.
Every so often (1-4 weeks) this machine fills up with processes that are frozen in the middle of trying to connect() to /dev/log. I looked at /proc/<pid>/fd/ for one frozen client, then ran netstat --unix to see what it said about the sockets listed there. It didn't show them. Restarting syslogd consistently fixes the problem.
The clients freeze like this:
[pid 1720] socket(PF_UNIX, SOCK_STREAM, 0) = 3 [pid 1720] fcntl(3, F_SETFD, FD_CLOEXEC) = 0 [pid 1720] connect(3, {sun_family=AF_UNIX, sun_path="/dev/log"}, 16 <unfinished ...>
and syslogd is spinning thusly:
--- SIGALRM (Alarm clock) --- time(NULL) = 933978397 rt_sigaction(SIGALRM, {0x804b4a0, [], SA_RESTART}, {0x804b4a0, [], SA_RESTART}, 8) = 0 alarm(30) = 0 sigreturn() = ? (mask now []) poll([{fd=40, events=POLLIN}], 1, 40000) = -1 EINTR (Interrupted system call) --- SIGALRM (Alarm clock) --- time(NULL) = 933978427 rt_sigaction(SIGALRM, {0x804b4a0, [], SA_RESTART}, {0x804b4a0, [], SA_RESTART}, 8) = 0 alarm(30) = 0 sigreturn() = ? (mask now []) poll([{fd=40, events=POLLIN}], 1, 40000) = -1 EINTR (Interrupted system call) --- SIGALRM (Alarm clock) ---
Syslog has a bunch of /dev/log sockets shown as CONNECTED by netstat during this time. I don't think it's that /syslogd has stopped listening on /dev/log, because when syslogd is stopped, the connect("/dev/log") fails immediately with ECONNREFUSED.
Any hints would be appreciated. I'd appreciate a CC of replies, though I'll watch dejanews as well.
Eric ebuddington@clark.williams.edu
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |