Hi Peter, could you please create an issue for this and attach a simple example, best in C, to reproduce this segfault? Thanks!
- Martin On Wed, Nov 21, 2012 at 4:49 PM, Martin Hurton <[email protected]> wrote: > Thanks for report, I will check it. > > On Nov 20, 2012 3:18 AM, "Peter Friend" <[email protected]> wrote: >> >> I have a client REQ talking to a ROUTER. I am translating some prototype >> code from python to Java so the ROUTER is in Java and the REQ client is >> python. I was rather perplexed when I got a segfault during poll(): >> >> >> >> socks = dict(polldev.poll(10 * 1000)) >> >> >> >> from strace: >> >> write(6, "\1\0\0\0\0\0\0\0", 8) = 8 >> >> write(8, "\1\0\0\0\0\0\0\0", 8) = 8 >> >> poll([{fd=8, events=POLLIN}], 1, 0) = 1 ([{fd=8, revents=POLLIN}]) >> >> read(8, "\1\0\0\0\0\0\0\0", 8) = 8 >> >> poll([{fd=8, events=POLLIN}], 1, 0) = 0 (Timeout) >> >> write(6, "\1\0\0\0\0\0\0\0", 8) = 8 >> >> fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 0), ...}) = 0 >> >> mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = >> 0x7fc8abbed000 >> >> write(1, "sending 1\n", 10sending 1 >> >> ) = 10 >> >> poll([{fd=8, events=POLLIN}], 1, 0) = 1 ([{fd=8, revents=POLLIN}]) >> >> poll([{fd=8, events=POLLIN}], 1, 0) = 1 ([{fd=8, revents=POLLIN}]) >> >> read(8, "\1\0\0\0\0\0\0\0", 8) = 8 >> >> poll([{fd=8, events=POLLIN}], 1, 0) = 0 (Timeout) >> >> poll([{fd=8, events=POLLIN}], 1, 10000 <unfinished ...> >> >> +++ killed by SIGSEGV (core dumped) +++ >> >> >> >> This ended up being caused by the fact that I forgot to put in the empty >> frame for the reply to the REQ. Once I did that everything worked, but I >> wouldn't expect this to cause a segfault. I am working on a Java REQ client >> as well to verify whether it's a core library issue. I am using my own build >> of libzmq from the master branch I built today. >> >> >> >> Thanks, >> >> >> >> Peter >> >> >> >> >> _______________________________________________ >> zeromq-dev mailing list >> [email protected] >> http://lists.zeromq.org/mailman/listinfo/zeromq-dev >> > _______________________________________________ zeromq-dev mailing list [email protected] http://lists.zeromq.org/mailman/listinfo/zeromq-dev
