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https://issues.apache.org/jira/browse/TS-844?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13080763#comment-13080763
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Zhao Yongming commented on TS-844:
----------------------------------
after talk to mohan, he is not sure what is the low level crash root cause too,
that is what John wondering.
I'd push back a while, if no other report on the same issue, maybe mohan can
get the question cleared.
> ReadFromWriter fail in CacheRead.cc
> -----------------------------------
>
> Key: TS-844
> URL: https://issues.apache.org/jira/browse/TS-844
> Project: Traffic Server
> Issue Type: Bug
> Reporter: mohan_zl
> Assignee: Zhao Yongming
> Fix For: 3.1.0
>
> Attachments: TS-844.patch
>
>
> {code}
> #6 0x00000000006ab4d7 in CacheVC::openReadChooseWriter (this=0x2aaaf81523d0,
> event=1, e=0x0) at CacheRead.cc:320
> #7 0x00000000006abdc9 in CacheVC::openReadFromWriter (this=0x2aaaf81523d0,
> event=1, e=0x0) at CacheRead.cc:411
> #8 0x00000000004d302f in Continuation::handleEvent (this=0x2aaaf81523d0,
> event=1, data=0x0) at I_Continuation.h:146
> #9 0x00000000006ae2b9 in Cache::open_read (this=0x2aaab0001c40,
> cont=0x2aaab4472aa0, key=0x42100b10, request=0x2aaab44710f0,
> params=0x2aaab4470928, type=CACHE_FRAG_TYPE_HTTP,
> hostname=0x2aab09581049
> "js.tongji.linezing.comicon1.gifjs.tongji.linezing.com�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ�ï¿ï¿½Þ���"...,
> host_len=22) at CacheRead.cc:228
> #10 0x000000000068da30 in Cache::open_read (this=0x2aaab0001c40,
> cont=0x2aaab4472aa0, url=0x2aaab4471108, request=0x2aaab44710f0,
> params=0x2aaab4470928,
> type=CACHE_FRAG_TYPE_HTTP) at P_CacheInternal.h:1068
> #11 0x000000000067d32f in CacheProcessor::open_read (this=0xf2c030,
> cont=0x2aaab4472aa0, url=0x2aaab4471108, request=0x2aaab44710f0,
> params=0x2aaab4470928, pin_in_cache=0,
> type=CACHE_FRAG_TYPE_HTTP) at Cache.cc:3011
> #12 0x000000000054e058 in HttpCacheSM::do_cache_open_read
> (this=0x2aaab4472aa0) at HttpCacheSM.cc:220
> #13 0x000000000054e1a7 in HttpCacheSM::open_read (this=0x2aaab4472aa0,
> url=0x2aaab4471108, hdr=0x2aaab44710f0, params=0x2aaab4470928,
> pin_in_cache=0) at HttpCacheSM.cc:252
> #14 0x0000000000568404 in HttpSM::do_cache_lookup_and_read
> (this=0x2aaab4470830) at HttpSM.cc:3893
> #15 0x00000000005734b5 in HttpSM::set_next_state (this=0x2aaab4470830) at
> HttpSM.cc:6436
> #16 0x000000000056115a in HttpSM::call_transact_and_set_next_state
> (this=0x2aaab4470830, f=0) at HttpSM.cc:6328
> #17 0x0000000000574b78 in HttpSM::handle_api_return (this=0x2aaab4470830) at
> HttpSM.cc:1516
> #18 0x000000000056dbe7 in HttpSM::state_api_callout (this=0x2aaab4470830,
> event=0, data=0x0) at HttpSM.cc:1448
> #19 0x000000000056de77 in HttpSM::do_api_callout_internal
> (this=0x2aaab4470830) at HttpSM.cc:4345
> #20 0x0000000000578c89 in HttpSM::do_api_callout (this=0x2aaab4470830) at
> HttpSM.cc:497
> #21 0x0000000000572e93 in HttpSM::set_next_state (this=0x2aaab4470830) at
> HttpSM.cc:6362
> #22 0x000000000056115a in HttpSM::call_transact_and_set_next_state
> (this=0x2aaab4470830, f=0) at HttpSM.cc:6328
> #23 0x0000000000572faf in HttpSM::set_next_state (this=0x2aaab4470830) at
> HttpSM.cc:6378
> #24 0x000000000056115a in HttpSM::call_transact_and_set_next_state
> (this=0x2aaab4470830, f=0) at HttpSM.cc:6328
> #25 0x0000000000574b78 in HttpSM::handle_api_return (this=0x2aaab4470830) at
> HttpSM.cc:1516
> #26 0x000000000056dbe7 in HttpSM::state_api_callout (this=0x2aaab4470830,
> event=0, data=0x0) at HttpSM.cc:1448
> #27 0x000000000056de77 in HttpSM::do_api_callout_internal
> (this=0x2aaab4470830) at HttpSM.cc:4345
> #28 0x0000000000578c89 in HttpSM::do_api_callout (this=0x2aaab4470830) at
> HttpSM.cc:497
> #29 0x0000000000572e93 in HttpSM::set_next_state (this=0x2aaab4470830) at
> HttpSM.cc:6362
> #30 0x000000000056115a in HttpSM::call_transact_and_set_next_state
> (this=0x2aaab4470830, f=0) at HttpSM.cc:6328
> #31 0x0000000000574b78 in HttpSM::handle_api_return (this=0x2aaab4470830) at
> HttpSM.cc:1516
> #32 0x000000000056dbe7 in HttpSM::state_api_callout (this=0x2aaab4470830,
> event=0, data=0x0) at HttpSM.cc:1448
> #33 0x000000000056de77 in HttpSM::do_api_callout_internal
> (this=0x2aaab4470830) at HttpSM.cc:4345
> #34 0x0000000000578c89 in HttpSM::do_api_callout (this=0x2aaab4470830) at
> HttpSM.cc:497
> #35 0x0000000000572e93 in HttpSM::set_next_state (this=0x2aaab4470830) at
> HttpSM.cc:6362
> #36 0x000000000056115a in HttpSM::call_transact_and_set_next_state
> (this=0x2aaab4470830, f=0x59e52e
> <HttpTransact::ModifyRequest(HttpTransact::State*)>) at HttpSM.cc:6328
> #37 0x000000000057490c in HttpSM::state_read_client_request_header
> (this=0x2aaab4470830, event=100, data=0x2049f5e8) at HttpSM.cc:780
> #38 0x000000000056e49f in HttpSM::main_handler (this=0x2aaab4470830,
> event=100, data=0x2049f5e8) at HttpSM.cc:2436
> #39 0x00000000004d302f in Continuation::handleEvent (this=0x2aaab4470830,
> event=100, data=0x2049f5e8) at I_Continuation.h:146
> #40 0x00000000006d6b61 in read_signal_and_update (event=100, vc=0x2049f420)
> at UnixNetVConnection.cc:138
> #41 0x00000000006d739e in read_from_net (nh=0x2aaaab32f688, vc=0x2049f420,
> thread=0x2aaaab32e010) at UnixNetVConnection.cc:320
> #42 0x00000000006d74b9 in UnixNetVConnection::net_read_io (this=0x2049f420,
> nh=0x2aaaab32f688, lthread=0x2aaaab32e010) at UnixNetVConnection.cc:793
> #43 0x00000000006d0bbc in NetHandler::mainNetEvent (this=0x2aaaab32f688,
> event=5, e=0x1ebf6830) at UnixNet.cc:389
> #44 0x00000000004d302f in Continuation::handleEvent (this=0x2aaaab32f688,
> event=5, data=0x1ebf6830) at I_Continuation.h:146
> #45 0x00000000006f9978 in EThread::process_event (this=0x2aaaab32e010,
> e=0x1ebf6830, calling_code=5) at UnixEThread.cc:140
> #46 0x00000000006f9e96 in EThread::execute (this=0x2aaaab32e010) at
> UnixEThread.cc:262
> ---Type <return> to continue, or q <return> to quit---b
> #47 0x00000000006f92c9 in spawn_thread_internal (a=0x1ebea410) at Thread.cc:88
> #48 0x00000030e3a064a7 in start_thread () from /lib64/libpthread.so.0
> #49 0x00000030e2ed3c2d in clone () from /lib64/libc.so.6
> {code}
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