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https://issues.apache.org/jira/browse/TS-3235?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14246368#comment-14246368
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kang li commented on TS-3235:
-----------------------------
Hi [~amc],
This is the reentrancy_count and deletable flag of the PASSIVE_VC. This is from
another core dump, which seems INKContInternal was marked as closed.
{code}
(gdb) p this->vc_type
$8 = PLUGIN_VC_PASSIVE
(gdb) p this->deletable
$9 = false
(gdb) p this->reentrancy_count
$10 = 1
(gdb) p this->other_side->deletable
$11 = false
(gdb) p this->other_side->reentrancy_count
$12 = 0
(gdb) p *(INKContInternal*)this->core_obj->connect_to
$13 = {<DummyVConnection> = {<VConnection> = {<Continuation> =
{<force_VFPT_to_top> = {_vptr.force_VFPT_to_top = 0x769690}, handler = (
int (Continuation::*)(Continuation *, int, void *)) 0x50a236
<INKContInternal::handle_event(int, void*)>, mutex = {m_ptr = 0x2b47eee4b0d0},
link = {<SLink<Continuation>> = {next = 0x0}, prev = 0x0}}, lerrno =
0}, <No data fields>}, mdata = 0x2b47cce65e10,
m_event_func = 0x2b4356aaa620 <(anonymous namespace)::handleEvents(TSCont,
TSEvent, void*)>, m_event_count = 0, m_closed = 1, m_deletable = 0,
m_deleted = 0, m_free_magic = INKCONT_INTERN_MAGIC_ALIVE}
{code}
Regards,
Kang
> PluginVC crashed with unrecognized event
> ----------------------------------------
>
> Key: TS-3235
> URL: https://issues.apache.org/jira/browse/TS-3235
> Project: Traffic Server
> Issue Type: Bug
> Components: CPP API, HTTP, Plugins
> Reporter: kang li
> Assignee: Brian Geffon
>
> We are using atscppapi to create Intercept plugin.
>
> From the coredump , that seems Continuation of the InterceptPlugin was
> already been destroyed.
> {code}
> #0 0x000000375ac32925 in raise () from /lib64/libc.so.6
> #1 0x000000375ac34105 in abort () from /lib64/libc.so.6
> #2 0x00002b21eeae3458 in ink_die_die_die (retval=1) at ink_error.cc:43
> #3 0x00002b21eeae3525 in ink_fatal_va(int, const char *, typedef
> __va_list_tag __va_list_tag *) (return_code=1,
> message_format=0x2b21eeaf08d8 "%s:%d: failed assert `%s`",
> ap=0x2b21f4913ad0) at ink_error.cc:65
> #4 0x00002b21eeae35ee in ink_fatal (return_code=1,
> message_format=0x2b21eeaf08d8 "%s:%d: failed assert `%s`") at ink_error.cc:73
> #5 0x00002b21eeae2160 in _ink_assert (expression=0x76ddb8 "call_event ==
> core_lock_retry_event", file=0x76dd04 "PluginVC.cc", line=203)
> at ink_assert.cc:37
> #6 0x0000000000530217 in PluginVC::main_handler (this=0x2b24ef007cb8,
> event=1, data=0xe0f5b80) at PluginVC.cc:203
> #7 0x00000000004f5854 in Continuation::handleEvent (this=0x2b24ef007cb8,
> event=1, data=0xe0f5b80) at ../iocore/eventsystem/I_Continuation.h:146
> #8 0x0000000000755d26 in EThread::process_event (this=0x309b250,
> e=0xe0f5b80, calling_code=1) at UnixEThread.cc:145
> #9 0x000000000075610a in EThread::execute (this=0x309b250) at
> UnixEThread.cc:239
> #10 0x0000000000755284 in spawn_thread_internal (a=0x2849330) at Thread.cc:88
> #11 0x00002b21ef05f9d1 in start_thread () from /lib64/libpthread.so.0
> #12 0x000000375ace8b7d in clone () from /lib64/libc.so.6
> (gdb) p sm_lock_retry_event
> $13 = (Event *) 0x2b2496146e90
> (gdb) p core_lock_retry_event
> $14 = (Event *) 0x0
> (gdb) p active_event
> $15 = (Event *) 0x0
> (gdb) p inactive_event
> $16 = (Event *) 0x0
> (gdb) p *(INKContInternal*)this->core_obj->connect_to
> Cannot access memory at address 0x2b269cd46c10
> {code}
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