shinrich opened a new issue #7838:
URL: https://github.com/apache/trafficserver/issues/7838
We have been getting some background crashes with variations of the
following stack since we moved from a 9.0.0 based build to a 9.0.1 based build.
```
[ 00 ] traffic_server get_header_field
( HPACK.cc:357 )
[ 01 ] traffic_server HpackIndexingTable::lookup(char const*,
int, char const*, int) const ( HPACK.cc:251 )
[ 02 ] traffic_server hpack_encode_header_block
( HPACK.cc:908 )
[ 03 ] traffic_server http2_encode_header_blocks
( HTTP2.cc:669 )
[ 04 ] traffic_server
Http2ConnectionState::send_headers_frame(Http2Stream*) (
Http2ConnectionState.cc:1651 )
[ 05 ] traffic_server
Http2Stream::update_write_request(IOBufferReader*, long, bool) (
Http2Stream.cc:626 )
[ 06 ] traffic_server Http2Stream::do_io_write(Continuation*,
long, IOBufferReader*, bool) ( Http2Stream.cc:348 )
[ 07 ] traffic_server
HttpTunnel::producer_run(HttpTunnelProducer*) (
HttpTunnel.cc:958 )
[ 08 ] traffic_server
HttpTunnel::tunnel_run(HttpTunnelProducer*) (
HttpTunnel.cc:700 )
[ 09 ] traffic_server HttpSM::state_api_callout(int, void*)
( HttpSM.cc:1543 )
[ 10 ] traffic_server HttpSM::state_api_callback(int, void*)
( HttpSM.cc:1350 )
[ 11 ] traffic_server TSHttpTxnReenable
( InkAPI.cc:6230 )
[ 12 ] header_rewrite.so (deleted)
```
I will try to dig into an actual core file to get some more details. From
what I can see in backtracio, the HPACK table looks ok and the index seems
reasonable given the size of the map.
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