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Posted to dev@zookeeper.apache.org by "Marshall McMullen (JIRA)" <ji...@apache.org> on 2015/11/02 21:25:27 UTC
[jira] [Created] (ZOOKEEPER-2311) assert in setup_random
Marshall McMullen created ZOOKEEPER-2311:
--------------------------------------------
Summary: assert in setup_random
Key: ZOOKEEPER-2311
URL: https://issues.apache.org/jira/browse/ZOOKEEPER-2311
Project: ZooKeeper
Issue Type: Bug
Components: c client
Reporter: Marshall McMullen
We've started seeing an assert failing inside setup_random at line 537:
528 static void setup_random()
529 {
530 #ifndef _WIN32 // TODO: better seed
531 int seed;
532 int fd = open("/dev/urandom", O_RDONLY);
533 if (fd == -1) {
534 seed = getpid();
535 } else {
536 int rc = read(fd, &seed, sizeof(seed));
537 assert(rc == sizeof(seed));
538 close(fd);
539 }
540 srandom(seed);
541 srand48(seed);
542 #endif
The core files show:
Program terminated with signal 6, Aborted.
#0 0x00007f9ff665a0d5 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#0 0x00007f9ff665a0d5 in raise () from /lib/x86_64-linux-gnu/libc.so.6
#1 0x00007f9ff665d83b in abort () from /lib/x86_64-linux-gnu/libc.so.6
#2 0x00007f9ff6652d9e in ?? () from /lib/x86_64-linux-gnu/libc.so.6
#3 0x00007f9ff6652e42 in __assert_fail () from /lib/x86_64-linux-gnu/libc.so.6
#4 0x00007f9ff8e4070a in setup_random () at src/zookeeper.c:476
#5 0x00007f9ff8e40d76 in resolve_hosts (zh=0x7f9fe14de400, hosts_in=0x7f9fd700f400 "10.26.200.6:2181,10.26.200.7:2181,10.26.200.8:2181", avec=0x7f9fd87fab60) at src/zookeeper.c:730
#6 0x00007f9ff8e40e87 in update_addrs (zh=0x7f9fe14de400) at src/zookeeper.c:801
#7 0x00007f9ff8e44176 in zookeeper_interest (zh=0x7f9fe14de400, fd=0x7f9fd87fac4c, interest=0x7f9fd87fac50, tv=0x7f9fd87fac80) at src/zookeeper.c:1980
#8 0x00007f9ff8e553f5 in do_io (v=0x7f9fe14de400) at src/mt_adaptor.c:379
#9 0x00000000020170ac in solidfire::ThreadBacktraces::LaunchThread (this=0x7f9ff0c8d500, args=<optimized out>) at shared/ThreadBacktraces.cpp:497
#10 0x00007f9ff804de9a in start_thread () from /lib/x86_64-linux-gnu/libpthread.so.0
#11 0x00007f9ff671738d in clone () from /lib/x86_64-linux-gnu/libc.so.6
#12 0x0000000000000000 in ?? ()
I'm not sure what the underlying cause of this is... But POSIX always allows for a short read(2), and any program MUST check for short reads...
Has anyone else encountered this issue? We are seeing it rather frequently which is concerning.
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