masaori335 opened a new issue #7796:
URL: https://github.com/apache/trafficserver/issues/7796
On the current master branch (ed89b7b694908b12f21452195e2bbfd4e0fbb156), I
observed below assertion failure intermittently.
```
2021-05-07 15:17:51.924268+0900 traffic_server[20019:1779140] Fatal:
HttpCacheSM.cc:161: failed assertion `captive_action.cancelled == 0`
Process 20019 stopped
* thread #2, name = '[ET_NET 0]', stop reason = signal SIGABRT
frame #0: 0x00007fff20394946 libsystem_kernel.dylib`__pthread_kill + 10
libsystem_kernel.dylib`__pthread_kill:
-> 0x7fff20394946 <+10>: jae 0x7fff20394950 ; <+20>
0x7fff20394948 <+12>: movq %rax, %rdi
0x7fff2039494b <+15>: jmp 0x7fff2038eb49 ; cerror_nocancel
0x7fff20394950 <+20>: retq
Target 0: (traffic_server) stopped.
(lldb) bt
* thread #2, name = '[ET_NET 0]', stop reason = signal SIGABRT
* frame #0: 0x00007fff20394946 libsystem_kernel.dylib`__pthread_kill + 10
frame #1: 0x00007fff203c3615 libsystem_pthread.dylib`pthread_kill + 263
frame #2: 0x00007fff20318411 libsystem_c.dylib`abort + 120
frame #3: 0x00000001012202ae
libtscore.10.dylib`ink_abort(message_format="%s:%d: failed assertion `%s`") at
ink_error.cc:99:3
frame #4: 0x000000010121c3cc
libtscore.10.dylib`::_ink_assert(expression="captive_action.cancelled == 0",
file="HttpCacheSM.cc", line=161) at ink_assert.cc:37:3
frame #5: 0x00000001000a69c0
traffic_server`HttpCacheSM::state_cache_open_write(this=0x0000000109001990,
event=1108, data=0x000000013004e840) at HttpCacheSM.cc:161:3
frame #6: 0x0000000100005aff
traffic_server`Continuation::handleEvent(this=0x0000000109001990, event=1108,
data=0x000000013004e840) at I_Continuation.h:219:12
frame #7: 0x0000000100338a33
traffic_server`CacheVC::callcont(this=0x000000013004e840, event=1108) at
P_CacheInternal.h:640:25
frame #8: 0x0000000100339633
traffic_server`CacheVC::openWriteStartDone(this=0x000000013004e840, event=3900,
e=0x0000000000000000) at CacheWrite.cc:1627:10
frame #9: 0x0000000100005aff
traffic_server`Continuation::handleEvent(this=0x000000013004e840, event=3900,
data=0x0000000000000000) at I_Continuation.h:219:12
frame #10: 0x000000010033acef
traffic_server`Cache::open_write(this=0x0000000101c415e0,
cont=0x0000000109001990, key=0x00000001082c5c38, info=0x000000013004ed88,
apin_in_cache=0, (null)=0x0000000000000000, type=CACHE_FRAG_TYPE_HTTP,
hostname="localhost8001http100kblocalhost:8001http://localhost:8001/100kb";,
host_len=9) at CacheWrite.cc:1868:10
frame #11: 0x00000001002f9ca9
traffic_server`CacheProcessor::open_write(this=0x000000010069da00,
cont=0x0000000109001990, expected_size=0, key=0x00000001082c5c28,
request=0x0000000109000370, old_info=0x000000013004ed88, pin_in_cache=0,
type=CACHE_FRAG_TYPE_HTTP) at Cache.cc:3254:24
frame #12: 0x00000001000a768f
traffic_server`HttpCacheSM::open_write(this=0x0000000109001990,
key=0x00000001082c5c28, url=0x0000000109000388, request=0x0000000109000370,
old_info=0x000000013004ed88, pin_in_cache=0, retry=true, allow_multiple=false)
at HttpCacheSM.cc:363:20
frame #13: 0x000000010010257f
traffic_server`HttpSM::do_cache_prepare_action(this=0x0000000108fffbc0,
c_sm=0x0000000109001990, object_read_info=0x000000013004ed88, retry=true,
allow_multiple=false) at HttpSM.cc:4795:11
frame #14: 0x0000000100109208
traffic_server`HttpSM::do_cache_prepare_write(this=0x0000000108fffbc0) at
HttpSM.cc:4724:3
frame #15: 0x000000010010896c
traffic_server`HttpSM::set_next_state(this=0x0000000108fffbc0) at
HttpSM.cc:7608:5
frame #16: 0x00000001000df33a
traffic_server`HttpSM::call_transact_and_set_next_state(this=0x0000000108fffbc0,
f=0x0000000000000000)(HttpTransact::State*)) at HttpSM.cc:7339:3
frame #17: 0x00000001000e8094
traffic_server`HttpSM::handle_api_return(this=0x0000000108fffbc0) at
HttpSM.cc:1691:5
frame #18: 0x00000001000dad8f
traffic_server`HttpSM::do_api_callout(this=0x0000000108fffbc0) at
HttpSM.cc:436:5
frame #19: 0x00000001001071b4
traffic_server`HttpSM::set_next_state(this=0x0000000108fffbc0) at
HttpSM.cc:7373:5
frame #20: 0x00000001000df33a
traffic_server`HttpSM::call_transact_and_set_next_state(this=0x0000000108fffbc0,
f=0x0000000000000000)(HttpTransact::State*)) at HttpSM.cc:7339:3
frame #21: 0x00000001000f3aa7
traffic_server`HttpSM::state_hostdb_lookup(this=0x0000000108fffbc0, event=500,
data=0x0000000102839f80) at HttpSM.cc:2348:5
frame #22: 0x00000001000da6d8
traffic_server`HttpSM::main_handler(this=0x0000000108fffbc0, event=500,
data=0x0000000102839f80) at HttpSM.cc:2701:5
frame #23: 0x0000000100005aff
traffic_server`Continuation::handleEvent(this=0x0000000108fffbc0, event=500,
data=0x0000000102839f80) at I_Continuation.h:219:12
frame #24: 0x00000001002b39ef
traffic_server`reply_to_cont(cont=0x0000000108fffbc0, r=0x0000000102839f80,
is_srv=false) at HostDB.cc:503:9
frame #25: 0x00000001002b9e7d
traffic_server`HostDBContinuation::dnsEvent(this=0x000000011818f5e0, event=600,
e=0x0000000109449a00) at HostDB.cc:1366:11
frame #26: 0x0000000100005aff
traffic_server`Continuation::handleEvent(this=0x000000011818f5e0, event=600,
data=0x0000000109449a00) at I_Continuation.h:219:12
frame #27: 0x00000001002da3bd
traffic_server`DNSEntry::postOneEvent(this=0x0000000120958800, (null)=0,
(null)=0x0000000000000000) at DNS.cc:1449:26
frame #28: 0x00000001002da0fc
traffic_server`DNSEntry::post(this=0x0000000120958800, h=0x0000000118118000,
ent=0x0000000109449a00) at DNS.cc:1435:5
frame #29: 0x00000001002d9d72
traffic_server`DNSEntry::postAllEvent(this=0x0000000120958800, (null)=0,
(null)=0x0000000000000000) at DNS.cc:1412:7
frame #30: 0x0000000100005aff
traffic_server`Continuation::handleEvent(this=0x0000000120958800, event=0,
data=0x0000000000000000) at I_Continuation.h:219:12
frame #31: 0x00000001002d959a
traffic_server`dns_result(h=0x0000000118118000, e=0x0000000120958800,
ent=0x0000000109449a00, retry=false, tcp_retry=false) at DNS.cc:1379:6
frame #32: 0x00000001002d74d6
traffic_server`dns_process(handler=0x0000000118118000, buf=0x0000000109449a00,
len=43) at DNS.cc:1792:7
frame #33: 0x00000001002d434c
traffic_server`DNSHandler::recv_dns(this=0x0000000118118000, (null)=0,
(null)=0x0000000000000000) at DNS.cc:927:11
frame #34: 0x00000001002d138a
traffic_server`DNSHandler::mainEvent(this=0x0000000118118000, event=0,
e=0x0000000000000000) at DNS.cc:940:3
frame #35: 0x0000000100005aff
traffic_server`Continuation::handleEvent(this=0x0000000118118000, event=0,
data=0x0000000000000000) at I_Continuation.h:219:12
frame #36: 0x00000001002df6c4
traffic_server`DNSConnection::trigger(this=0x000000011812d678) at
DNSConnection.cc:87:12
frame #37: 0x000000010043da46
traffic_server`NetHandler::waitForActivity(this=0x00000001080bc0f0,
timeout=60000000) at UnixNet.cc:534:27
frame #38: 0x0000000100484f01
traffic_server`EThread::execute_regular(this=0x00000001080b8000) at
UnixEThread.cc:303:14
frame #39: 0x000000010048537d
traffic_server`EThread::execute(this=0x00000001080b8000) at
UnixEThread.cc:364:11
frame #40: 0x000000010048353b
traffic_server`spawn_thread_internal(a=0x0000000101c3d770) at Thread.cc:92:12
frame #41: 0x00007fff203c3954 libsystem_pthread.dylib`_pthread_start +
224
frame #42: 0x00007fff203bf4a7 libsystem_pthread.dylib`thread_start + 15
```
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