Critical Description
Seeing this on latest master, running on docs:
#0 0x00002b411eeff1cd in write () at ../sysdeps/unix/syscall-template.S:81
#1 0x00002b411be4860c in __interceptor_write (fd=66, ptr=0x6290000a0203, count=<optimized out>)
at ../../../../libsanitizer/sanitizer_common/sanitizer_common_interceptors.inc:453
#2 0x00002b411deaa826 in fd_write () from /opt/openssl/lib/libcrypto.so.1.0.0
#3 0x00002b411dea91ab in BIO_write () from /opt/openssl/lib/libcrypto.so.1.0.0
#4 0x00002b411db50142 in ssl3_write_pending () from /opt/openssl/lib/libssl.so.1.0.0
#5 0x00002b411db52a70 in ssl3_dispatch_alert () from /opt/openssl/lib/libssl.so.1.0.0
#6 0x00002b411db4df92 in ssl3_shutdown () from /opt/openssl/lib/libssl.so.1.0.0
#7 0x0000000000a003a2 in SSLNetVConnection::do_io_close (this=0x61800003b880, lerrno=-1) at SSLNetVConnection.cc:837
#8 0x000000000066bb4a in Http1ClientSession::do_io_close (this=0x619000029980, alerrno=-1) at Http1ClientSession.cc:303
#9 0x000000000066c7d3 in Http1ClientSession::state_keep_alive (this=0x619000029980, event=104, data=0x61800003b9a0)
at Http1ClientSession.cc:415
#10 0x000000000053a621 in Continuation::handleEvent (this=0x619000029980, event=104, data=0x61800003b9a0)
at ../iocore/eventsystem/I_Continuation.h:153
#11 0x0000000000a34eab in read_signal_and_update (event=104, vc=0x61800003b880) at UnixNetVConnection.cc:153
#12 0x0000000000a35594 in read_signal_done (event=104, nh=0x2b4123c27490, vc=0x61800003b880) at UnixNetVConnection.cc:214
#13 0x0000000000a3b72e in UnixNetVConnection::readSignalDone (this=0x61800003b880, event=104, nh=0x2b4123c27490)
at UnixNetVConnection.cc:1030
#14 0x00000000009fe003 in SSLNetVConnection::net_read_io (this=0x61800003b880, nh=0x2b4123c27490, lthread=0x2b4123c23800)
at SSLNetVConnection.cc:620
#15 0x0000000000a227e9 in NetHandler::mainNetEvent (this=0x2b4123c27490, event=5, e=0x60900000d040) at UnixNet.cc:527
#16 0x000000000053a621 in Continuation::handleEvent (this=0x2b4123c27490, event=5, data=0x60900000d040)
at ../iocore/eventsystem/I_Continuation.h:153
#17 0x0000000000a809fb in EThread::process_event (this=0x2b4123c23800, e=0x60900000d040, calling_code=5) at UnixEThread.cc:146
#18 0x0000000000a8183b in EThread::execute (this=0x2b4123c23800) at UnixEThread.cc:273
#19 0x0000000000a7f407 in spawn_thread_internal (a=0x604000018890) at Thread.cc:84
#20 0x00002b411eef8dc5 in start_thread (arg=0x2b4124431700) at pthread_create.c:308
#21 0x00002b411f920ced in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113