Description
As of ~9/20, we are seeing intermittent crashes in the regressions. Here's an example crash:
#0 0x00000000004f11ac in Ptr<IOBufferBlock>::operator IOBufferBlock* (this=0x10) at ../../lib/ts/Ptr.h:300 #1 0x0000000000508802 in IOBufferReader::read_avail (this=0x0) at ../../iocore/eventsystem/P_IOBuffer.h:606 #2 0x0000000000771da8 in write_to_net_io (nh=0x7f0c5755cb90, vc=0x7f0c480a7670, thread=0x7f0c57559010) at ../../../iocore/net/UnixNetVConnection.cc:553 #3 0x0000000000771679 in write_to_net (nh=0x7f0c5755cb90, vc=0x7f0c480a7670, thread=0x7f0c57559010) at ../../../iocore/net/UnixNetVConnection.cc:422 #4 0x00000000007689d9 in NetHandler::mainNetEvent (this=0x7f0c5755cb90, event=5, e=0x1e8bdf0) at ../../../iocore/net/UnixNet.cc:532 #5 0x00000000005083a4 in Continuation::handleEvent (this=0x7f0c5755cb90, event=5, data=0x1e8bdf0) at ../../iocore/eventsystem/I_Continuation.h:146 #6 0x0000000000793570 in EThread::process_event (this=0x7f0c57559010, e=0x1e8bdf0, calling_code=5) at ../../../iocore/eventsystem/UnixEThread.cc:128 #7 0x0000000000793b27 in EThread::execute (this=0x7f0c57559010) at ../../../iocore/eventsystem/UnixEThread.cc:252 #8 0x0000000000792ad3 in spawn_thread_internal (a=0x1e5a3d0) at ../../../iocore/eventsystem/Thread.cc:86 #9 0x00007f0c5a523182 in start_thread (arg=0x7f0c57457700) at pthread_create.c:312 #10 0x00007f0c5982c47d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111