Hi,
I am seeing an ATS crash. The stack trace and the crash log info for the
crash are pasted below. Seems to be happening in PluginVC::main_handler
line 216. I would appreciate it if someone can comment on possible reasons
for this crash? Thanks.

D.


[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/opt/trafficserver/bin/traffic_server -M
--bind_stdout /opt/trafficserver/var/l'.
Program terminated with signal SIGABRT, Aborted.
#0  0x00002b8a43807428 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:54
54 ../sysdeps/unix/sysv/linux/raise.c: No such file or directory.
[Current thread is 1 (Thread 0x2b8a4d312700 (LWP 136))]
(gdb) bt
#0  0x00002b8a43807428 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:54
#1  0x00002b8a43809187 in __GI_abort () at abort.c:118
#2  0x00002b8a417d5adf in ink_die_die_die () at ink_error.cc:43
#3  ink_fatal_va (fmt=0x2b8a417e29ff "%s:%d: failed assert `%s`",
ap=ap@entry=0x2b8a4d311cf0)
    at ink_error.cc:65
#4  0x00002b8a417d5b79 in ink_fatal (
    message_format=message_format@entry=0x2b8a417e29ff "%s:%d: failed
assert `%s`")
    at ink_error.cc:73
#5  0x00002b8a417d3c35 in _ink_assert (
    expression=expression@entry=0x7f13e0 "call_event ==
core_lock_retry_event",
    file=file@entry=0x7f1413 "PluginVC.cc", line=line@entry=216) at
ink_assert.cc:37
#6  0x00000000004fc68c in PluginVC::main_handler (this=0x2b8ad8807048,
event=<optimized out>,
    data=0x2c31fa0) at PluginVC.cc:216
#7  0x00000000007e0752 in Continuation::handleEvent (data=0x2c31fa0,
event=1, this=<optimized out>)
    at I_Continuation.h:153
#8  EThread::process_event (this=this@entry=0x2b8a4c707010,
e=e@entry=0x2c31fa0,
calling_code=1)
    at UnixEThread.cc:148
#9  0x00000000007e15d8 in EThread::execute (this=0x2b8a4c707010) at
UnixEThread.cc:202
#10 0x00000000007e01d5 in spawn_thread_internal (a=0x27a24d0) at
Thread.cc:86
#11 0x00002b8a42b176ba in start_thread (arg=0x2b8a4d312700) at
pthread_create.c:333
#12 0x00002b8a438d93dd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
(gdb)

 212   } else {
 213     if (call_event == sm_lock_retry_event) {
 214       sm_lock_retry_event = NULL;
 215     } else {
 216       ink_release_assert(call_event == core_lock_retry_event);
 217       core_lock_retry_event = NULL;
 218     }
 219

Process:            [ET_NET 0] [72]
File:               /opt/trafficserver/bin/traffic_server
Version:            Traffic Server 6.2.1
System Version:     Linux x86_64 #1 SMP Wed Apr 12 15:04:24 UTC 2017
3.10.0-514.16.1.el7.x86_64
Date:               Sat, 29 Jul 2017 08:15:01 +0000

No target signal information

No target CPU registers

Thread 136, [ET_NET 9]:
0    0x00000000004afb02 crash_logger_invoke(int, siginfo_t*, void*) + 0x82
1    0x00002b8a42b21390 __restore_rt + (nil)
2    0x00002b8a43807428 gsignal + 0x38
3    0x00002b8a4380902a abort + 0x16a
4    0x00002b8a417d5adf ink_fatal_va(char const*, __va_list_tag*) + 0x9f
5    0x00002b8a417d5b79 ink_fatal(char const*, ...) + 0x99
6    0x00002b8a417d3c35 _ink_assert + 0x15
7    0x00000000004fc68c PluginVC::main_handler(int, void*) + 0x5ac
8    0x00000000007e0752 EThread::process_event(Event*, int) + 0x92
9    0x00000000007e15d8 EThread::execute() + 0x808
10   0x00000000007e01d5 spawn_thread_internal(void*) + 0x55
11   0x00002b8a42b176ba start_thread + 0xca
12   0x00002b8a438d93dd clone + 0x6d
13   0x0000000000000000 0x0 + 0x6d

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