[PROTON-1552] Epoll proactor example crash when given invalid hostname

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Component/s: proton-c

Environment

qpid-proton at commit

{noformat}
commit 1b1f3f9cae1c68545f93c74e017edae039875440 (upstream/master)
Author: Andrew Stitcher <[e-mail]>
Date: Mon Aug 14 14:38:26 2017 -0400

    PROTON-1539: Ensure that SASL challenge and response frames generate a binary
    - And never a null even if the binary is zero length
{noformat}

• Assignee: Unassigned
• Reporter: Jiri Daněk
• Created: 24/Aug/17 15:37
• Updated: 22/Sep/17 13:17
• Resolved: 22/Sep/17 13:17

Description

[qpid-proton/build/examples/c/proactor]$ ./send upto.nogood.corp
PN_TRANSPORT_CLOSED: proton:io: Name or service not known - connect to  upto.nogood.corp:5672                                                                                                                               
epoll proactor failure in /home/jdanek/Work/repos/qpid-proton/proton-c/src/proactor/epoll.c:630: "arming polled file descriptor": No such file or directory                                                                 
Aborted

when compiled with libuv proactor, it does not crash

$ cmake -DPROACTOR=libuv -DBUILD_GO=OFF ..

[/qpid-proton/build_libuv]$ examples/c/proactor/send upto.nogood
PN_TRANSPORT_CLOSED: proton:io: unknown node or service - on connect resolving upto.nogood:5672

[jdanek@nixos:~/Work/repos/qpid-proton/build/examples/c/proactor]$ gdb --args ./send upto.nogood.corp
GNU gdb (GDB) 8.0
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

[...]

(gdb) run
Starting program: /home/jdanek/Work/repos/qpid-proton/build/examples/c/proactor/send upto.nogood.corp
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/nix/store/l48biijfr1j6d5kdg911051x2phfjrz7-glibc-2.25/lib/libthread_db.so.1".
PN_TRANSPORT_CLOSED: proton:io: Name or service not known - connect to  upto.nogood.corp:5672
epoll proactor failure in /home/jdanek/Work/repos/qpid-proton/proton-c/src/proactor/epoll.c:630: "arming polled file descriptor": No such file or directory

Program received signal SIGABRT, Aborted.
0x00007ffff740e384 in raise () from /nix/store/l48biijfr1j6d5kdg911051x2phfjrz7-glibc-2.25/lib/libc.so.6
(gdb) bt
#0  0x00007ffff740e384 in raise () from /nix/store/l48biijfr1j6d5kdg911051x2phfjrz7-glibc-2.25/lib/libc.so.6
#1  0x00007ffff740f7ea in abort () from /nix/store/l48biijfr1j6d5kdg911051x2phfjrz7-glibc-2.25/lib/libc.so.6
#2  0x00007ffff7bd45de in rearm (p=<optimized out>, ee=<optimized out>) at /home/jdanek/Work/repos/qpid-proton/proton-c/src/proactor/epoll.c:630
#3  0x00007ffff7bd5884 in pconnection_process (pc=0x6053c0, events=<optimized out>, timeout=<optimized out>, topup=<optimized out>) at /home/jdanek/Work/repos/qpid-proton/proton-c/src/proactor/epoll.c:1047
#4  0x00007ffff7bd52c4 in pconnection_batch_next (batch=<optimized out>) at /home/jdanek/Work/repos/qpid-proton/proton-c/src/proactor/epoll.c:811
#5  0x0000000000401b98 in run (app=0x7fffffffd100) at /home/jdanek/Work/repos/qpid-proton/examples/c/proactor/send.c:169
#6  0x0000000000401ff3 in main (argc=<optimized out>, argv=<optimized out>) at /home/jdanek/Work/repos/qpid-proton/examples/c/proactor/send.c:192

Issue Links

• is duplicated by: PROTON-1586 [proton-c] examples send core dumps on specifying invalid host