vanand123 opened a new issue, #13395: URL: https://github.com/apache/trafficserver/issues/13395
Observed below crash with trafficserver 9.2.13 ``` #0 MIOBufferAccessor::reader_for (areader=0x0, this=0x55aeaad6de88) at /iocore/eventsystem/P_IOBuffer.h:1037 #1 INKVConnInternal::do_io_write (this=0x55aeaad6dd80, c=0x7f22cc7a9d78, nbytes=0, buf=0x0, owner=false) at traffic_server/InkAPI.cc:1219 #2 in HttpTunnel::abort_tunnel (this=this@entry=0x7f22cc7a9d78) at HttpTunnel.cc:608 #3 in HttpSM::state_read_server_response_header (this=0x7f22cc7a8d60, event=100, data=0x55aeaac5ba10) at HttpSM.cc:2083 #4 in HttpSM::main_handler (this=0x7f22cc7a8d60, event=100, data=0x55aeaac5ba10) at HttpSM.cc:2763 #5 in Continuation::handleEvent (data=0x55aeaac5ba10, event=100, this=0x7f22cc7a8d60) at /iocore/eventsystem/I_Continuation.h:227 #6 Continuation::handleEvent (data=0x55aeaac5ba10, event=100, this=0x7f22cc7a8d60) at /iocore/eventsystem/I_Continuation.h:223 #7 read_signal_and_update (event=100, vc=0x55aeaac5b820) at UnixNetVConnection.cc:83 #8 in UnixNetVConnection::readSignalAndUpdate (this=<optimized out>, event=<optimized out>) at UnixNetVConnection.cc:972 #9 in SSLNetVConnection::net_read_io (this=0x55aeaac5b820, nh=0x7f22cffc2410, lthread=<optimized out>) at SSLNetVConnection.cc:691 #10 in NetHandler::process_ready_list (this=this@entry=0x7f22cffc2410) at UnixNet.cc:428 #11 in NetHandler::waitForActivity (this=0x7f22cffc2410, timeout=<optimized out>) at UnixNet.cc:565 #12 in EThread::execute_regular (this=this@entry=0x7f22cffbe010) at UnixEThread.cc:292 #13 in EThread::execute (this=0x7f22cffbe010) at UnixEThread.cc:353 #14 in spawn_thread_internal (a=0x55aeaa92e3d0) at Thread.cc:78 #15 in start_thread () from /lib/x86_64/libc.so.6 #16 in clone3 () from /lib/x86_64/libc.so.6 ``` **Environment Details:** ATS Version: 9.2.13 Platform: Linux x86_64 Compiler: g++ 11.5.0 In ATS 9.2.13, When an origin responds before ATS has finished forwarding a request body,`HttpTunnel::abort_tunnel()` can cancel the request transform by calling `INKVConnInternal::do_io_write()` with a null `IOBufferReader`. It calls `reader_for(buf)` unconditionally. Passing`buf == nullptr` therefore causes a null-pointer dereference and SIGSEGV. Reproduced crash using below script [reproduce_ats_crash.cpp](https://github.com/user-attachments/files/30084507/reproduce_ats_crash.cpp) -- 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]
