shinrich commented on issue #7333:
URL: https://github.com/apache/trafficserver/issues/7333#issuecomment-730565362
Interestingly, the crashes associated with PR #7278 all seem to be with the
Http2 client. Here are a couple stack traces.
```
(gdb) bt
#0 0x000000000061968f in get_header_field (index=<optimized out>,
this=0x2b3b8eb3d3c0) at
../../../../../../_vcs/trafficserver9/proxy/http2/HPACK.cc:357
#1 get_header_field (field=..., index=<optimized out>, this=<optimized
out>) at ../../../../../../_vcs/trafficserver9/proxy/http2/HPACK.cc:294
#2 HpackIndexingTable::get_header_field (this=<optimized out>,
index=<optimized out>, field=...) at
../../../../../../_vcs/trafficserver9/proxy/http2/HPACK.cc:281
#3 0x0000000000619ed8 in decode_indexed_header_field(MIMEFieldWrapper&,
unsigned char const*, unsigned char const*, HpackIndexingTable&) ()
at ../../../../../../_vcs/trafficserver9/proxy/http2/HPACK.cc:649
#4 0x000000000061b20f in hpack_decode_header_block (indexing_table=...,
hdr=hdr@entry=0x2b3da9b40f58,
in_buf=0x2b3e97a31900
"\202\005\377\210\004b\277\361\060\001w\032u\241>\a\300\333N:\353A\370\213\214\034~\021",
in_buf_len=<optimized out>, max_header_size=131072,
maximum_table_size=maximum_table_size@entry=4096) at
../../../../../../_vcs/trafficserver9/proxy/http2/HPACK.cc:812
#5 0x00000000005fb0bb in http2_decode_header_blocks
(hdr=hdr@entry=0x2b3da9b40f58, buf_start=<optimized out>, buf_len=<optimized
out>, len_read=len_read@entry=0x0, handle=...,
trailing_header=@0x2b3da9b41978: false, maximum_table_size=4096) at
../../../../../../_vcs/trafficserver9/proxy/http2/HTTP2.cc:690
#6 0x000000000060ea01 in Http2Stream::decode_header_blocks
(this=this@entry=0x2b3da9b40e00, hpack_handle=...,
maximum_table_size=<optimized out>)
at ../../../../../../_vcs/trafficserver9/proxy/http2/Http2Stream.cc:158
#7 0x000000000060a6a2 in rcv_headers_frame(Http2ConnectionState&,
Http2Frame const&) () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ConnectionState.h:103
#8 0x000000000060c1a4 in Http2ConnectionState::main_event_handler(int,
void*) () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ConnectionState.cc:1063
#9 0x00000000005ffac9 in handleEvent (data=0x2b3935901370, event=2253,
this=0x2b3e97a82700)
at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/iocore/eventsystem/I_Continuation.h:167
#10 handleEvent (data=0x2b3935901370, event=2253, this=0x2b3e97a82700)
at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/iocore/eventsystem/I_Continuation.h:163
#11 send_connection_event(Continuation*, int, void*) () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:65
#12 0x00000000006004f7 in Http2ClientSession::do_complete_frame_read
(this=this@entry=0x2b3e97a82400) at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:568
#13 0x0000000000600985 in Http2ClientSession::state_process_frame_read(int,
VIO*, bool) () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:626
#14 0x00000000005ffdeb in Http2ClientSession::main_event_handler(int, void*)
() at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:352
#15 0x000000000076327e in read_signal_and_update(int, UnixNetVConnection*)
() at ../../../../../../_vcs/trafficserver9/iocore/net/UnixNetVConnection.cc:83
#16 0x0000000000739a69 in SSLNetVConnection::net_read_io(NetHandler*,
EThread*) () at
../../../../../../_vcs/trafficserver9/iocore/net/SSLNetVConnection.cc:670
#17 0x0000000000757abe in NetHandler::process_ready_list
(this=this@entry=0x2b3931736ae0) at
../../../../../../_vcs/trafficserver9/iocore/net/UnixNet.cc:413
#18 0x0000000000757f00 in NetHandler::waitForActivity(long) () at
../../../../../../_vcs/trafficserver9/iocore/net/UnixNet.cc:548
#19 0x00000000007a51e1 in EThread::execute_regular
(this=this@entry=0x2b3931732a40) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/I_PriorityEventQueue.h:115
#20 0x00000000007a5436 in execute (this=0x2b3931732a40) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/UnixEThread.cc:332
#21 EThread::execute (this=0x2b3931732a40) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/UnixEThread.cc:310
#22 0x00000000007a3669 in spawn_thread_internal (a=0x2b392de7f100) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/Thread.cc:92
#23 0x00002b392c2e9ea5 in start_thread () from /lib64/libpthread.so.0
#24 0x00002b392d01f8dd in clone () from /lib64/libc.so.6
```
```
(gdb) bt
#0 mime_hdr_destroy_field_block_list (head=0x594d2d31746c4867,
heap=0x2ab7496c8000) at
../../../../../../_vcs/trafficserver9/proxy/hdrs/MIME.cc:1091
#1 mime_hdr_fields_clear (heap=0x2ab7496c8000, mh=0x2ab7496c8088) at
../../../../../../_vcs/trafficserver9/proxy/hdrs/MIME.cc:1232
#2 0x0000000000619914 in fields_clear (this=<optimized out>,
this=<optimized out>)
at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/proxy/hdrs/MIME.h:1159
#3 HpackDynamicTable::~HpackDynamicTable (this=0x2ab81c5b2cf0,
__in_chrg=<optimized out>) at
../../../../../../_vcs/trafficserver9/proxy/http2/HPACK.cc:343
#4 0x00000000006038a8 in ~HpackIndexingTable (this=0x2ab6f56c27e0,
__in_chrg=<optimized out>) at
../../../../../../_vcs/trafficserver9/proxy/http2/HPACK.h:147
#5 Http2ConnectionState::destroy (this=this@entry=0x2ab830ab5700) at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ConnectionState.h:157
#6 0x00000000006020eb in Http2ClientSession::free() () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:160
#7 0x0000000000600021 in Http2ClientSession::main_event_handler(int, void*)
() at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:420
#8 0x000000000076327e in read_signal_and_update(int, UnixNetVConnection*)
() at ../../../../../../_vcs/trafficserver9/iocore/net/UnixNetVConnection.cc:83
#9 0x000000000076752c in UnixNetVConnection::mainEvent(int, Event*) () at
../../../../../../_vcs/trafficserver9/iocore/net/UnixNetVConnection.cc:1189
#10 0x000000000075a445 in InactivityCop::check_inactivity
(this=0x2ab4438cb000, event=<optimized out>, e=<optimized out>) at
../../../../../../_vcs/trafficserver9/iocore/net/UnixNet.cc:93
#11 0x00000000007a4113 in handleEvent (data=0x2ab443800060, event=2,
this=0x2ab4438cb000) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/I_Continuation.h:167
#12 handleEvent (data=0x2ab443800060, event=2, this=0x2ab4438cb000) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/I_Continuation.h:163
#13 EThread::process_event(Event*, int) () at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/UnixEThread.cc:132
#14 0x00000000007a5024 in EThread::execute_regular
(this=this@entry=0x2ab43d5325c0) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/UnixEThread.cc:241
#15 0x00000000007a5436 in execute (this=0x2ab43d5325c0) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/UnixEThread.cc:332
#16 EThread::execute (this=0x2ab43d5325c0) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/UnixEThread.cc:310
#17 0x00000000007a3669 in spawn_thread_internal (a=0x2ab4397a3b80) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/Thread.cc:92
#18 0x00002ab437bb4ea5 in start_thread () from /lib64/libpthread.so.0
#19 0x00002ab4388ea8dd in clone () from /lib64/libc.so.6
```
```
(gdb) bt
#0 Mutex_lock (t=0x2ba9791b04c0, m=0x0) at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/iocore/eventsystem/I_Lock.h:446
#1 Mutex_lock (t=0x2ba9791b04c0, m=...) at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/iocore/eventsystem/I_Lock.h:358
#2 MutexLock::MutexLock (this=0x2ba97d0750f0, am=..., t=0x2ba9791b04c0)
at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/iocore/eventsystem/I_Lock.h:446
#3 0x000000000060f70b in Http2Stream::initiating_close() ()
at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/include/tscore/ink_thread.h:124
#4 0x00000000006091f2 in Http2ConnectionState::cleanup_streams() () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ConnectionState.cc:1342
#5 0x000000000060bc93 in Http2ConnectionState::main_event_handler(int,
void*) () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ConnectionState.cc:1017
#6 0x0000000000604620 in handleEvent (data=0x0, event=2252,
this=0x2bac32592900)
at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/iocore/eventsystem/I_Continuation.h:167
#7 handleEvent (data=0x0, event=2252, this=0x2bac32592900)
at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/iocore/eventsystem/I_Continuation.h:163
#8 rcv_goaway_frame(Http2ConnectionState&, Http2Frame const&) () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ConnectionState.cc:756
#9 0x000000000060c1a4 in Http2ConnectionState::main_event_handler(int,
void*) () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ConnectionState.cc:1063
#10 0x00000000005ffac9 in handleEvent (data=0x2ba97d075370, event=2253,
this=0x2bac32592900)
at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/iocore/eventsystem/I_Continuation.h:167
#11 handleEvent (data=0x2ba97d075370, event=2253, this=0x2bac32592900)
at
/home/shinrich/build/_build/build_release_posix-x86_64_gcc/trafficserver9/build/../../../../_vcs/trafficserver9/iocore/eventsystem/I_Continuation.h:163
#12 send_connection_event(Continuation*, int, void*) () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:65
#13 0x00000000006004f7 in Http2ClientSession::do_complete_frame_read
(this=this@entry=0x2bac32592600) at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:568
#14 0x0000000000600985 in Http2ClientSession::state_process_frame_read(int,
VIO*, bool) () at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:626
#15 0x00000000005ffdeb in Http2ClientSession::main_event_handler(int, void*)
() at
../../../../../../_vcs/trafficserver9/proxy/http2/Http2ClientSession.cc:352
#16 0x000000000076327e in read_signal_and_update(int, UnixNetVConnection*)
() at ../../../../../../_vcs/trafficserver9/iocore/net/UnixNetVConnection.cc:83
#17 0x0000000000739a69 in SSLNetVConnection::net_read_io(NetHandler*,
EThread*) () at
../../../../../../_vcs/trafficserver9/iocore/net/SSLNetVConnection.cc:670
#18 0x0000000000757abe in NetHandler::process_ready_list
(this=this@entry=0x2ba9791b4560) at
../../../../../../_vcs/trafficserver9/iocore/net/UnixNet.cc:413
#19 0x0000000000757f00 in NetHandler::waitForActivity(long) () at
../../../../../../_vcs/trafficserver9/iocore/net/UnixNet.cc:548
#20 0x00000000007a51e1 in EThread::execute_regular
(this=this@entry=0x2ba9791b04c0) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/I_PriorityEventQueue.h:115
#21 0x00000000007a5436 in execute (this=0x2ba9791b04c0) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/UnixEThread.cc:332
#22 EThread::execute (this=0x2ba9791b04c0) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/UnixEThread.cc:310
#23 0x00000000007a3669 in spawn_thread_internal (a=0x2ba9765a3880) at
../../../../../../_vcs/trafficserver9/iocore/eventsystem/Thread.cc:92
#24 0x00002ba974894ea5 in start_thread () from /lib64/libpthread.so.0
#25 0x00002ba9755ca8dd in clone () from /lib64/libc.so.6
```
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