[
https://issues.apache.org/jira/browse/TS-1574?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13499366#comment-13499366
]
Zhao Yongming commented on TS-1574:
-----------------------------------
{code}
(gdb) p this
$8 = (RangeTransform * const) 0x2b12603c2c50
(gdb) p *this
$9 = {<INKVConnInternal> = {<INKContInternal> = {<DummyVConnection> =
{<VConnection> = {<Continuation> = {<force_VFPT_to_top> = {
_vptr.force_VFPT_to_top = 0x667970}, handler = (int
(Continuation::*)(Continuation *, int,
void *)) 0x4da200 <RangeTransform::handle_event(int, void*)>, mutex =
{m_ptr = 0x2b12686700e0}, link = {<SLink<Continuation>> = {next = 0x0},
prev = 0x0}}, lerrno = 0}, <No data fields>}, mdata = 0x0,
m_event_func = 0, m_event_count = 0, m_closed = 0, m_deletable = 0,
m_deleted = 0, m_free_magic = INKCONT_INTERN_MAGIC_ALIVE}, m_read_vio =
{_cont = 0x0, nbytes = 0, ndone = 0, op = 0, buffer = {mbuf = 0x0,
entry = 0x0}, vc_server = 0x0, mutex = {m_ptr = 0x0}}, m_write_vio =
{_cont = 0x2b1507efd180, nbytes = 70664, ndone = 0, op = 2, buffer = {
mbuf = 0x2b12301fa140, entry = 0x2b12301fa180}, vc_server =
0x2b12603c2c50, mutex = {m_ptr = 0x2b12686700e0}},
m_output_vc = 0x2b12603c2df8}, m_output_buf = 0x2b126c0b36e0,
m_output_reader = 0x2b126c0b36f8, m_transform_resp = 0x2b1507efbde8,
m_output_vio = 0x2b12603c2e78, m_unsatisfiable_range = false,
m_range_content_length = 0, m_num_chars_for_cl = 1, m_num_range_fields = 0,
m_current_range = 0, m_content_type = 0x2b163abf4abc
"audio/mpeg\r\n\r\n\373=\216\273\344\366ID3\002", m_content_type_len = 10,
m_ranges = 0x0,
m_output_cl = 70664, m_done = 0}
{code}
another flying event?
> Range transform crash at RangeTransform::transform_to_range Transform.cc:842
> ----------------------------------------------------------------------------
>
> Key: TS-1574
> URL: https://issues.apache.org/jira/browse/TS-1574
> Project: Traffic Server
> Issue Type: Bug
> Components: HTTP
> Affects Versions: 3.3.0
> Environment: git master, forward proxy
> Reporter: Zhao Yongming
> Fix For: 3.3.1
>
>
> I have a forward proxy that just updated to the latest git master release on
> 2012-11-16, it crashed several times with the same assert:
> {code}
> Program terminated with signal 11, Segmentation fault.
> #0 RangeTransform::transform_to_range (this=0x2b12603c2c50) at
> Transform.cc:842
> 842 if (*done_byte < (*start - 1)) {
> Missing separate debuginfos, use: debuginfo-install
> expat-2.0.1-11.el6_2.x86_64 glibc-2.12-1.47.el6_2.9.x86_64
> keyutils-libs-1.4-3.el6.x86_64 krb5-libs-1.9-22.el6_2.1.x86_64
> libcom_err-1.41.12-11.el6.x86_64 libgcc-4.4.6-3.el6.x86_64
> libselinux-2.0.94-5.2.el6.x86_64 libstdc++-4.4.6-3.el6.x86_64
> openssl-1.0.0-20.el6_2.4.x86_64 pcre-7.8-3.1.el6.x86_64
> tcl-8.5.7-6.el6.x86_64 xz-libs-4.999.9-0.3.beta.20091007git.el6.x86_64
> zlib-1.2.3-27.el6.x86_64
> (gdb)
> (gdb) bt
> #0 RangeTransform::transform_to_range (this=0x2b12603c2c50) at
> Transform.cc:842
> #1 0x00000000004da440 in RangeTransform::handle_event (this=0x2b12603c2c50,
> event=<value optimized out>, edata=<value optimized out>)
> at Transform.cc:815
> #2 0x0000000000654dd4 in handleEvent (this=0x2b1200404010, e=0x2b12841c0ea0,
> calling_code=1) at I_Continuation.h:146
> #3 EThread::process_event (this=0x2b1200404010, e=0x2b12841c0ea0,
> calling_code=1) at UnixEThread.cc:142
> #4 0x000000000065593b in EThread::execute (this=0x2b1200404010) at
> UnixEThread.cc:193
> #5 0x00000000006540d2 in spawn_thread_internal (a=0x2c987d0) at Thread.cc:88
> #6 0x0000003e878077f1 in start_thread () from /lib64/libpthread.so.0
> #7 0x0000003e86ce5ccd in clone () from /lib64/libc.so.6
> (gdb) f 1
> #1 0x00000000004da440 in RangeTransform::handle_event (this=0x2b12603c2c50,
> event=<value optimized out>, edata=<value optimized out>)
> at Transform.cc:815
> 815 transform_to_range();
> (gdb) l
> 810 m_output_vio->nbytes = m_done;
> 811 m_output_vio->reenable();
> 812 return 0;
> 813 }
> 814
> 815 transform_to_range();
> 816 break;
> 817 }
> 818 }
> 819
> (gdb) p m_output_vio
> $1 = (VIO *) 0x2b12603c2e78
> (gdb) p *m_output_vio
> $2 = {_cont = 0x2b12603c2c50, nbytes = 70664, ndone = 0, op = 2, buffer =
> {mbuf = 0x2b126c0b36e0, entry = 0x2b126c0b36f8},
> vc_server = 0x2b12603c2df8, mutex = {m_ptr = 0x2b12686700e0}}
> (gdb) f 2
> #2 0x0000000000654dd4 in handleEvent (this=0x2b1200404010, e=0x2b12841c0ea0,
> calling_code=1) at I_Continuation.h:146
> 146 return (this->*handler) (event, data);
> (gdb) l
> 141 @param data General purpose data related to the event code
> (Processor specific).
> 142 @return State machine and processor specific return code.
> 143
> 144 */
> 145 int handleEvent(int event = CONTINUATION_EVENT_NONE, void *data = 0) {
> 146 return (this->*handler) (event, data);
> 147 }
> 148
> 149 /**
> 150 Contructor of the Continuation object. It should not be used
> (gdb) bt
> #0 RangeTransform::transform_to_range (this=0x2b12603c2c50) at
> Transform.cc:842
> #1 0x00000000004da440 in RangeTransform::handle_event (this=0x2b12603c2c50,
> event=<value optimized out>, edata=<value optimized out>)
> at Transform.cc:815
> #2 0x0000000000654dd4 in handleEvent (this=0x2b1200404010, e=0x2b12841c0ea0,
> calling_code=1) at I_Continuation.h:146
> #3 EThread::process_event (this=0x2b1200404010, e=0x2b12841c0ea0,
> calling_code=1) at UnixEThread.cc:142
> #4 0x000000000065593b in EThread::execute (this=0x2b1200404010) at
> UnixEThread.cc:193
> #5 0x00000000006540d2 in spawn_thread_internal (a=0x2c987d0) at Thread.cc:88
> #6 0x0000003e878077f1 in start_thread () from /lib64/libpthread.so.0
> #7 0x0000003e86ce5ccd in clone () from /lib64/libc.so.6
> (gdb) f 0
> #0 RangeTransform::transform_to_range (this=0x2b12603c2c50) at
> Transform.cc:842
> 842 if (*done_byte < (*start - 1)) {
> (gdb) l
> 837 done_byte = &m_ranges[m_current_range]._done_byte;
> 838 start = &m_ranges[m_current_range]._start;
> 839 avail = reader->read_avail();
> 840
> 841 while (true) {
> 842 if (*done_byte < (*start - 1)) {
> 843 toskip = *start - *done_byte - 1;
> 844
> 845 if (toskip > avail)
> 846 toskip = avail;
> (gdb) p m_ranges
> $4 = (RangeRecord *) 0x0
> (gdb) p start
> $5 = (const int64_t *) 0x0
> (gdb) p avail
> $6 = 70664
> (gdb) p done_byte
> $7 = (int64_t *) 0x10
> {code}
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