Alan Conway created PROTON-1766:
-----------------------------------
Summary: [cpp] seg fault in reconnect test
Key: PROTON-1766
URL: https://issues.apache.org/jira/browse/PROTON-1766
Project: Qpid Proton
Issue Type: Improvement
Components: cpp-binding, proton-c
Affects Versions: proton-c-0.20.0
Reporter: Alan Conway
Assignee: Alan Conway
Fix For: proton-c-0.21.0
See [https://issues.jboss.org/browse/ENTMQCL-600] for details and reproducer
code, summary:
Using the to be attached reproducer and broker configuration:
Running amqsender
./amqsender <broker1> <broker2> <username> <password> <address> <frequency in
microseconds>
e.g.
./amqsender testbox111:5672 testbox111:5673 anon anon Q1 1
You can reproduce the coredump with just one broker
1. keep slave down
2. start master broker
3. run amqsender with a very low frequency
4. kill master broker
This should reproduce the coredump.
The reproducer has events implemented for on_transport_close yet we see:
{code}
.
.
.
[0x7fffec0169b0]:(PN_TRANSPORT, pn_transport<0x7fffec0169b0>)
[0x7fffec0169b0]:(PN_TRANSPORT, pn_transport<0x7fffec0169b0>)
[0x7fffec0169b0]:(PN_CONNECTION_WAKE, pn_connection<0x7fffec000b90>)
AMQSender::on_connection_wake pn_connection<0x7fffec000b90>
[0x7fffec0169b0]:(PN_TRANSPORT_TAIL_CLOSED, pn_transport<0x7fffec0169b0>)
[0x7fffec0169b0]:(PN_TRANSPORT_ERROR, pn_transport<0x7fffec0169b0>)
[0x7fffec0169b0]:(PN_TRANSPORT_HEAD_CLOSED, pn_transport<0x7fffec0169b0>)
[0x7fffec0169b0]:(PN_TRANSPORT_CLOSED, pn_transport<0x7fffec0169b0>)
[0x7fffec0169b0]:(PN_CONNECTION_INIT, pn_connection<0x7fffec000b90>)
Thread 1 "amqsender" received signal SIGSEGV, Segmentation fault.
0x00007ffff72bcdd0 in pthread_mutex_lock () from /lib64/libpthread.so.0
Missing separate debuginfos, use: dnf debuginfo-install
cyrus-sasl-gssapi-2.1.26-26.2.fc24.x86_64
cyrus-sasl-lib-2.1.26-26.2.fc24.x86_64 cyrus-sasl-md5-2.1.26-26.2.fc24.x86_64
cyrus-sasl-plain-2.1.26-26.2.fc24.x86_64
cyrus-sasl-scram-2.1.26-26.2.fc24.x86_64 keyutils-libs-1.5.9-8.fc24.x86_64
krb5-libs-1.14.4-7.fc25.x86_64 libcom_err-1.43.3-1.fc25.x86_64
libcrypt-nss-2.24-4.fc25.x86_64 libdb-5.3.28-16.fc25.x86_64
libgcc-6.3.1-1.fc25.x86_64 libselinux-2.5-13.fc25.x86_64
libstdc++-6.3.1-1.fc25.x86_64 nss-softokn-freebl-3.28.3-1.1.fc25.x86_64
openssl-libs-1.0.2k-1.fc25.x86_64 pcre-8.40-5.fc25.x86_64
zlib-1.2.8-10.fc24.x86_64
(gdb) bt
#0 0x00007ffff72bcdd0 in pthread_mutex_lock () from /lib64/libpthread.so.0
#1 0x00007ffff76dc4fa in lock (m=0x1a0) at
/home/rkieley/LocalProjects/src/rh/rh-qpid-proton/proton-c/src/proactor/epoll.c:112
#2 0x00007ffff76dcc09 in wake (ctx=0x7fffec2b8ac0) at
/home/rkieley/LocalProjects/src/rh/rh-qpid-proton/proton-c/src/proactor/epoll.c:436
#3 0x00007ffff76def0e in pn_connection_wake (c=0x7fffec000b90) at
/home/rkieley/LocalProjects/src/rh/rh-qpid-proton/proton-c/src/proactor/epoll.c:1302
#4 0x00007ffff7b81b82 in proton::container::impl::connection_work_queue::add
(this=0x7fffec001d30, f=...) at
/home/rkieley/LocalProjects/src/rh/rh-qpid-proton/proton-c/bindings/cpp/src/proactor_container_impl.cpp:118
#5 0x00007ffff7bacde5 in proton::work_queue::add (this=0x7fffec001cd8, f=...)
at
/home/rkieley/LocalProjects/src/rh/rh-qpid-proton/proton-c/bindings/cpp/src/work_queue.cpp:43
#6 0x000000000040536f in AMQSender::send (this=this@entry=0x7fffffffd960,
strMsg="7578") at ../attachments/AMQSender.cpp:42
#7 0x000000000040328f in main (argc=<optimized out>, argv=0x7fffffffdbd8) at
../attachments/amqsend.cpp:20
(gdb) frame 2
#2 0x00007ffff76dcc09 in wake (ctx=0x7fffec2b8ac0) at
/home/rkieley/LocalProjects/src/rh/rh-qpid-proton/proton-c/src/proactor/epoll.c:436
436 lock(&p->eventfd_mutex);
(gdb) print p
$3 = (pn_proactor_t *) 0x0
(gdb)
{code}
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