[TS-2654] Range request crash in trafficserver 4.2.0

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Fix Version/s: 4.2.1, 5.0.0
• Component/s: HTTP
• Labels: crash
• Assignee: Leif Hedstrom
• Reporter: Chaokovsky Lee
• Created: 21/Mar/14 10:24
• Updated: 10/Aug/14 20:16
• Resolved: 10/Apr/14 16:48

Description

I have updated trafficserver from 4.1.2 to 4.2.0, but the range request crash bug even appear.

I use "read while writer" feature in my configuration, Maybe the feature cause crash ?
CONFIG proxy.config.cache.enable_read_while_writer INT 1

/usr/bin/traffic_server - STACK TRACE:
/lib64/libpthread.so.0[0x3a8300f4a0]
/usr/bin/traffic_server(HttpTransact::change_response_header_because_of_range_request(HttpTransact::State*, HTTPHdr*)+0x255)[0x533295]
/usr/bin/traffic_server(HttpTransact::handle_content_length_header(HttpTransact::State*, HTTPHdr*, HTTPHdr*)+0x2c8)[0x533638]
/usr/bin/traffic_server(HttpTransact::build_response(HttpTransact::State*, HTTPHdr*, HTTPHdr*, HTTPVersion, HTTPStatus, char const*)+0x460)[0x533b40]
/usr/bin/traffic_server(HttpTransact::handle_transform_ready(HttpTransact::State*)+0x7d)[0x53a2dd]
/usr/bin/traffic_server(HttpSM::call_transact_and_set_next_state(void (*)(HttpTransact::State*))+0x28)[0x50b268]
/usr/bin/traffic_server(HttpSM::state_response_wait_for_transform_read(int, void*)+0xed)[0x514b4d]
/usr/bin/traffic_server(HttpSM::main_handler(int, void*)+0x70)[0x51feb0]
/usr/bin/traffic_server(TransformTerminus::handle_event(int, void*)+0x1d6)[0x4df8d6]
/usr/bin/traffic_server(EThread::process_event(Event*, int)+0x8f)[0x66d37f]
/usr/bin/traffic_server(EThread::execute()+0x61b)[0x66deab]
/usr/bin/traffic_server[0x66c89a]
/lib64/libpthread.so.0[0x3a830077f1]
/lib64/libc.so.6(clone+0x6d)[0x3a82ce570d]

Thank for your excellent work, the trafficserver is so great!

Issue Links

• is cloned by: TS-2731 Range request crash
• relates to: TS-1955 read_while_writer sends wrong response for range request.