kanseiishikawa opened a new issue, #13496: URL: https://github.com/apache/trafficserver/issues/13496
# Happened A crash occurred while using ATS9.2.11 ``` Thread 1562, [ET_NET 57]: 0 0x0000557bbf45a498 crash_logger_invoke(int, siginfo_t*, void*) + 0x88 1 0x00007fb9728d1520 __sigaction + 0x50 2 0x0000557bbf53abd2 HttpTransact::handle_request_keep_alive_headers(HttpTransact::State*, HTTPVersion, HTTPHdr*) + 0x32 3 0x0000557bbf53f039 HttpTransact::build_request(HttpTransact::State*, HTTPHdr*, HTTPHdr*, HTTPVersion) + 0xb9 4 0x0000557bbf51e584 HttpTransact::HandleCacheOpenReadHit(HttpTransact::State*) + 0x834 5 0x0000557bbf4f9941 HttpSM::call_transact_and_set_next_state(void (*)(HttpTransact::State*)) + 0x201 6 0x0000557bbf4d7cf2 HttpSM::state_api_callout(int, void*) + 0x592 7 0x0000557bbf4d3eec HttpSM::state_api_callback(int, void*) + 0xec 8 0x0000557bbf47a2fb TSHttpTxnReenable + 0x18b 9 0x00007fb96f625226 0x0 + 0x18b ``` It occurred at the moment parent.config was reloaded. # My investigation Based on the code and this stack trace, I suspect the issue is occurring at position [HttpTransact.cc#L6889](https://github.com/apache/trafficserver/blob/9.2.11/proxy/http/HttpTransact.cc#L6889). `build_request` is called after the null check for [HttpTransact.cc#L2931](https://github.com/apache/trafficserver/blob/fdf5fb223c5eef92991ceb28a53cb8add956914b/proxy/http/HttpTransact.cc#L2931), but it appears there is no subsequent null check. ## I would like to know the following - Is it possible for execution to reach point [HttpTransact.cc#L6889](https://github.com/apache/trafficserver/blob/9.2.11/proxy/http/HttpTransact.cc#L6889 with `s->current.server` being null? - Are there any other possible causes? Any help would be appreciated -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
