[
https://issues.apache.org/jira/browse/TS-4527?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15329838#comment-15329838
]
Bryan Call commented on TS-4527:
--------------------------------
backtrace from gdb macro:
{code}
Breakpoint 1, UnixNetVConnection::do_io_read (this=0x634000678a00, c=0x0,
nbytes=0, buf=0x0) at
../../../trafficserver/iocore/net/UnixNetVConnection.cc:629
629 ../../../trafficserver/iocore/net/UnixNetVConnection.cc: No such file
or directory.
in ../../../trafficserver/iocore/net/UnixNetVConnection.cc
#0 UnixNetVConnection::do_io_read (this=0x634000678a00, c=0x0, nbytes=0,
buf=0x0) at ../../../trafficserver/iocore/net/UnixNetVConnection.cc:629
__func__ = "do_io_read"
#1 0x000000000099a549 in Http2ClientSession::release_netvc
(this=0x634000693420) at
../../../trafficserver/proxy/http2/Http2ClientSession.h:186
No locals.
#2 0x000000000063089e in ProxyClientSession::handle_api_return
(this=0x634000693420, event=Unhandled dwarf expression opcode 0xf3
) at ../../trafficserver/proxy/ProxyClientSession.cc:175
vc = <value optimized out>
hookid = <value optimized out>
#3 0x0000000000632efa in state_api_callout (this=0x634000693420, id=Unhandled
dwarf expression opcode 0xf3
) at ../../trafficserver/proxy/ProxyClientSession.cc:120
No locals.
#4 ProxyClientSession::do_api_callout (this=0x634000693420, id=Unhandled dwarf
expression opcode 0xf3
) at ../../trafficserver/proxy/ProxyClientSession.cc:146
No locals.
#5 0x000000000098ca70 in Http2ClientSession::main_event_handler
(this=0x634000693420, event=105, edata=0x634000678b18) at
../../../trafficserver/proxy/http2/Http2ClientSession.cc:280
__func__ = "main_event_handler"
#6 0x0000000000e16bd1 in handleEvent (this=0x634000678a00, event=Unhandled
dwarf expression opcode 0xf3
) at ../../../trafficserver/iocore/eventsystem/I_Continuation.h:153
{code}
> vc error messages in 6.2.0 release
> ----------------------------------
>
> Key: TS-4527
> URL: https://issues.apache.org/jira/browse/TS-4527
> Project: Traffic Server
> Issue Type: Bug
> Components: Network
> Affects Versions: 6.2.0
> Reporter: Bryan Call
> Fix For: 7.0.0
>
>
> Seeing this in the error logs *a lot*:
> {code}
> [Jun 13 17:14:26.606] Server {0x2b1a9f010700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x634000c186a0, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:26.606] Server {0x2b1a9f010700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x634000c186a0, cont (nil), nbytes 0, reader (nil)
> [Jun 13 17:14:26.631] Server {0x2b1a9e3eb700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x634000c0f220, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:26.631] Server {0x2b1a9e3eb700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x634000c0f220, cont (nil), nbytes 0, reader (nil)
> [Jun 13 17:14:26.727] Server {0x2b1aa0433700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x634000c13240, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:26.727] Server {0x2b1aa0433700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x634000c13240, cont (nil), nbytes 0, reader (nil)
> [Jun 13 17:14:26.765] Server {0x2b1aa083a700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x6340002364e0, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:26.765] Server {0x2b1aa083a700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x6340002364e0, cont (nil), nbytes 0, reader (nil)
> [Jun 13 17:14:26.914] Server {0x2b1a9e7f2700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x63400088c2e0, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:26.914] Server {0x2b1a9e7f2700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x63400088c2e0, cont (nil), nbytes 0, reader (nil)
> [Jun 13 17:14:26.938] Server {0x2b1a9e3eb700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x6340004f7fe0, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:26.938] Server {0x2b1a9e3eb700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x6340004f7fe0, cont (nil), nbytes 0, reader (nil)
> [Jun 13 17:14:27.004] Server {0x2b1aa3487700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x63400025a860, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:27.004] Server {0x2b1aa3487700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x63400025a860, cont (nil), nbytes 0, reader (nil)
> [Jun 13 17:14:27.048] Server {0x2b1aa144f700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x634000ad2820, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:27.048] Server {0x2b1aa144f700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x634000ad2820, cont (nil), nbytes 0, reader (nil)
> [Jun 13 17:14:27.248] Server {0x2b1a9dbdd700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x6340003fa1a0, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:27.248] Server {0x2b1a9dbdd700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x6340003fa1a0, cont (nil), nbytes 0, reader (nil)
> [Jun 13 17:14:27.388] Server {0x2b1aa3080700} ERROR:
> <UnixNetVConnection.cc:629 (do_io_read)> do_io_read invoked on closed vc
> 0x634000807f60, cont (nil), nbytes 0, buf (nil)
> [Jun 13 17:14:27.388] Server {0x2b1aa3080700} ERROR:
> <UnixNetVConnection.cc:653 (do_io_write)> do_io_write invoked on closed vc
> 0x634000807f60, cont (nil), nbytes 0, reader (nil)
> {code}
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