```
# gdb traffic_server core.11704
GNU gdb (GDB) Red Hat Enterprise Linux 7.6.1-100.el7_4.1
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-redhat-linux-gnu".
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>...
Reading symbols from /mmy/app/ats/bin/traffic_server...done.
warning: core file may not match specified executable file.
[New LWP 12308]
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[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/mmy/app/ats/bin/traffic_server -M --httpport
19101:fd=7'.
Program terminated with signal 11, Segmentation fault.
#0 data (this=0x0) at ../../iocore/eventsystem/I_IOBuffer.h:215
215 ../../iocore/eventsystem/I_IOBuffer.h: No such file or directory.
Missing separate debuginfos, use: debuginfo-install
trafficserver-5.3.2-57.el7.centos.x86_64
(gdb) bt
#0 data (this=0x0) at ../../iocore/eventsystem/I_IOBuffer.h:215
#1 ShowCache::handleCacheEvent (this=0x2afeb0c57000, event=<optimized out>,
e=0x2afebb520ae0) at CachePages.cc:332
#2 0x00002afe9c774a0e in handleEvent (data=0x2afebb520ae0, event=<optimized
out>, this=<optimized out>)
at ../../iocore/eventsystem/I_Continuation.h:145
#3 CacheVC::callcont (this=0x2afebb520ae0, event=<optimized out>) at
../../iocore/cache/P_CacheInternal.h:663
#4 0x00002afe9c7d555d in CacheVC::openReadStartEarliest (this=0x2afebb520ae0)
at CacheRead.cc:947
#5 0x00002afe9c7b518e in handleEvent (data=0x0, event=3900,
this=0x2afebb520ae0)
at ../../iocore/eventsystem/I_Continuation.h:145
#6 CacheVC::handleReadDone (this=<optimized out>, event=<optimized out>,
e=<optimized out>) at Cache.cc:2671
#7 0x00002afe9c7735b3 in handleEvent (data=<optimized out>, event=3900,
this=<optimized out>)
at ../../iocore/eventsystem/I_Continuation.h:145
#8 AIOCallbackInternal::io_complete (this=<optimized out>, event=<optimized
out>, data=<optimized out>)
at ../../iocore/aio/P_AIO.h:117
#9 0x00002afe9c82d360 in handleEvent (data=0x2afeb791aca0, event=1,
this=<optimized out>) at I_Continuation.h:145
#10 EThread::process_event (this=this@entry=0x2afea400d2c0,
e=e@entry=0x2afeb791aca0, calling_code=1)
at UnixEThread.cc:128
#11 0x00002afe9c82dc56 in EThread::execute (this=0x2afea400d2c0) at
UnixEThread.cc:179
#12 0x00002afe9c82ce3a in spawn_thread_internal (a=0x2afea19247d0) at
Thread.cc:85
#13 0x00002afe9ecaedc5 in start_thread () from /lib64/libpthread.so.0
#14 0x00002afe9fd4621d in clone () from /lib64/libc.so.6
(gdb) p *(CacheVC *)0x2afebb520ae0
$4 = {<CacheVConnection> = {<VConnection> = {<Continuation> =
{<force_VFPT_to_top> = {
_vptr.force_VFPT_to_top = 0x2afe9cb00190 <vtable for CacheVC+16>},
handler = (int (Continuation::*)(Continuation * const, int,
void *)) 0x2afe9c7d0ae0 <CacheVC::openReadMain(int, Event*)>, mutex =
{m_ptr = 0x2afeb41ddc70},
link = {<SLink<Continuation>> = {next = 0x0}, prev = 0x0}}, lerrno =
0}, <No data fields>},
static size_to_init = 344, key = {b = {1077575731632374735,
17148547417261088732}, u64 = {1077575731632374735,
17148547417261088732}, u32 = {780633039, 250892651, 3821674460,
3992707332},
u8 = "σ\207.kQ\364\016\334\037\312\343\004\341\373", <incomplete sequence
\355>}, first_key = {b = {
15767100406047557196, 8004638818729738088}, u64 = {15767100406047557196,
8004638818729738088}, u32 = {409060940,
3671064136, 1638940520, 1863725208}, u8 =
"L\306a\030H\376\317\332h?\260a\230\060\026o"}, earliest_key = {b = {
3335720549380720586, 5091160752896848827}, u64 = {3335720549380720586,
5091160752896848827}, u32 = {2412709834,
776657962, 181646267, 1185378235}, u8 =
"\312\aϏ*\334J.\273\263\323\n\273o\247F"}, update_key = {b = {0, 0},
u64 = {0, 0}, u32 = {0, 0, 0, 0}, u8 = '\000' <repeats 15 times>}, dir = {w
= {37593, 32484, 9147, 0, 663}},
earliest_dir = {w = {37593, 32484, 9147, 0, 663}}, overwrite_dir = {w = {0,
0, 0, 0, 0}}, first_dir = {w = {0, 0, 0,
0, 0}}, _action = {_vptr.Action = 0x2afe9cafae50 <vtable for Action+16>,
continuation = 0x2afeb0c57000, mutex = {
m_ptr = 0x2afeb41ddc70}, cancelled = 0}, request = {<MIMEHdr> =
{<HdrHeapSDKHandle> = {m_heap = 0x0},
m_mime = 0x0}, m_http = 0x0, m_url_cached = {<HdrHeapSDKHandle> = {m_heap
= 0x0}, m_url_impl = 0x0},
m_host_mime = 0x0, m_host_length = 0, m_port = 0, m_target_cached = false,
m_target_in_url = false,
m_port_in_header = false, static USE_HDR_HEAP_MAGIC = 0x1}, vector = {magic
= 0x0, data = {data = 0x2afebb520bf0,
fast_data = {{alternate = {m_alt = 0x2afeb4170000}}, {alternate = {m_alt
= 0x0}}, {alternate = {m_alt = 0x0}}, {
alternate = {m_alt = 0x0}}}, default_val = 0x2afe9d08e730
<default_vec_info>, size = 4, pos = 0}, xcount = 1,
vector_buf = {m_ptr = 0x0}}, alternate = {m_alt = 0x2afeb4170000}, buf =
{m_ptr = 0x2afeb4dc3e30}, first_buf = {
m_ptr = 0x0}, blocks = {m_ptr = 0x0}, writer_buf = {m_ptr = 0x0}, od = 0x0,
io = {<AIOCallback> = {<Continuation> = {<force_VFPT_to_top> = {
---Type <return> to continue, or q <return> to quit---
_vptr.force_VFPT_to_top = 0x2afe9cb000f0 <vtable for
AIOCallbackInternal+16>},
handler = (int (Continuation::*)(Continuation * const, int,
void *)) 0x2afe9c773580 <AIOCallbackInternal::io_complete(int, void*)>,
mutex = {m_ptr = 0x2afeb41ddc70},
link = {<SLink<Continuation>> = {next = 0x0}, prev = 0x0}}, aiocb =
{aio_fildes = 0, aio_buf = 0x2b058c152000,
aio_nbytes = 1048576, aio_offset = 5706545852416, aio_reqprio = 0,
aio_lio_opcode = 1, aio_state = 0,
aio__pad = {0}}, action = {_vptr.Action = 0x0, continuation =
0x2afebb520ae0, mutex = {m_ptr = 0x2afeb41ddc70},
cancelled = 0}, thread = 0x2afea400d2c0, then = 0x0, aio_result =
1048576}, first = 0x0,
aio_req = 0x2afea95c6a00, sleep_time = 0}, alternate_index = 0,
opendir_link = {<SLink<CacheVC>> = {next = 0x0},
prev = 0x0}, vio = {_cont = 0x0, nbytes = 0, ndone = 0, op = 1, buffer =
{mbuf = 0x0, entry = 0x0},
vc_server = 0x0, mutex = {m_ptr = 0x0}}, initial_thread = 0x2afea400d2c0,
frag_type = CACHE_FRAG_TYPE_HTTP,
info = 0x0, write_vector = 0x2afeb0f10bf0, params = 0x0, header_len = 0,
frag_len = 0, write_len = 0, agg_len = 0,
write_serial = 0, vol = 0x2afea33fc800, last_collision = 0x2b03b225ffb0,
trigger = 0x0, read_key = 0x2afebb520b18,
save_handler = (int (Continuation::*)(Continuation * const, int,
void *)) 0x2afe9c7d4e00 <CacheVC::openReadStartEarliest(int, Event*)>,
pin_in_cache = 0,
start_time = 1537961311944897282, base_stat = 13, recursive = 1, closed = 0,
seek_to = 0, offset = 0,
writer_offset = 0, length = 0, doc_pos = 72, write_pos = 0, total_len = 0,
doc_len = 275795641, update_len = 0,
fragment = 0, scan_msec_delay = 0, write_vc = 0x2afeaf7f7560, hostname = 0x0,
host_len = 0, header_to_write_len = 0,
header_to_write = 0x0, writer_lock_retry = 0, {flags = 24576, f =
{use_first_key = 0, overwrite = 0,
close_complete = 0, sync = 0, evacuator = 0, single_fragment = 0,
evac_vector = 0, lookup = 0, update = 0,
remove = 0, remove_aborted_writers = 0, open_read_timeout = 0, data_done
= 0, read_from_writer_called = 1,
not_from_ram_cache = 1, rewrite_resident_alt = 0, readers = 0,
doc_from_ram_cache = 0, hit_evacuate = 0,
allow_empty_doc = 0}}, scan_vol_map = 0x0, scan_fix_buffer_offset = 0}
(gdb)
(gdb) f 4
#4 0x00002afe9c7d555d in CacheVC::openReadStartEarliest (this=0x2afebb520ae0)
at CacheRead.cc:947
947 CacheRead.cc: No such file or directory.
(gdb) p first_buf
$6 = {m_ptr = 0x0}
(gdb)
```
> This problem occurs in both 5.3.2 and 7.1.4
[ Full content available at:
https://github.com/apache/trafficserver/issues/4328 ]
This message was relayed via gitbox.apache.org for [email protected]
