I'm moving my Pound servers from OpenBSD to FreeBSD 8.0 AMD64.

I've compiled Pound 2.5 from source --with-maxbuf=16384 and included
PCRE. Each instance of Pound is throwing this error at its first
request:

pound: MONITOR: worker exited on signal 11, restarting

Subsequent requests are serviced normally. I'm using the same
configurations that I was using on the OpenBSD boxes (albeit with
relevant paths corrected). I've pasted my config below. Anybody seen
this before?


-HKS


User            "pound"
Group           "pound"
Control         "/var/run/pound-ctl.socket"
LogFacility     daemon
LogLevel        5
Alive           30
Client          30
TimeOut         900
Grace           30

# HTTP goes to HTTPS redirect
ListenHTTP
        Address 10.2.1.72
        Port 80
        RewriteLocation 2
        Service
                Backend
                        Address 10.2.1.11
                        Port 8080
                End
                Backend
                        Address 10.2.1.21
                        Port 8080
                End
                Backend
                        Address 10.2.1.22
                        Port 8080
                End
        End
End

ListenHTTPS
        Address 10.2.1.72
        Port 443
        Cert "/usr/local/etc/pound/private/cert.pem"
        Client 30
        RewriteLocation 2

        # Mercurial requests get big timeouts
        Service
                HeadRequire "[Aa][Cc][Cc][Ee][Pp][Tt]:
.*application\/mercurial.*"
                HeadRequire "[Uu][Ss][Ee][Rr]-[Aa][Gg][Ee][Nn][Tt]:
.*mercurial.*"
                Backend
                        Address 10.2.1.24
                        Port 80
                        # 12 hours
                        Timeout 43200
                End
                Backend
                        Address 10.2.1.30
                        Port 80
                        # 12 hours
                        Timeout 43200
                End
        End

        Service
                Backend
                        Address 10.2.1.24
                        Port 80
                End
                Backend
                        Address 10.2.1.30
                        Port 80
                End
        End
End

# Uh-Oh page in case everything else is hosed
Service
        Backend
                Address 127.0.0.1
                Port    8181
        End
End

On Wed, Mar 10, 2010 at 6:20 PM, (private) HKS <hks.private(at)gmail.com>
wrote:[...]

This seems to be related to configuring with --with-maxbuf=16384 on a
64-bit box (I don't have any 64-bit non-FreeBSD boxes, so I can't test
that). If I leave that out or use --with-maxbuf=8192, there is no
initial segfault.

Any idea what's going on here?

-HKS

On Mon, 2010-03-29 at 11:55 -0400, (private) HKS wrote:[...]

It might be a problem with the stack size, which is important on some
*BSD flavours. Try changing (version 2.5, pound.c line 359)

#ifdef  NEED_STACK
 /* set new stack size - necessary for OpenBSD/FreeBSD and Linux NPTL */
 if(pthread_attr_setstacksize(&attr, 1 << 18)) {
     logmsg(LOG_ERR, "can't set stack size - aborted");
     exit(1);
 }
#endif

to a higher value and see if it helps. Also make sure NEED_STACK is
defined.[...]

On Tue, Mar 30, 2010 at 10:54 AM, Robert Segall <roseg(at)apsis.ch>
wrote:[...][...][...]
Good shot: boosting the stack size to 512k (1 << 19) fixed it. I know
this probably slips into POSIX programming details, but can you help
me understand a bit more of why this was a problem?

-HKS