joelnn commented on issue #19379:
URL:
https://github.com/apache/incubator-mxnet/issues/19379#issuecomment-1145325082
This is more important now that #19378 was reverted. I am seeing the
segfault described in #19360
```
(gdb) bt
#0 0x00007efccaa7d277 in raise () from /lib64/libc.so.6
#1 0x00007efccaa7e968 in abort () from /lib64/libc.so.6
#2 0x00007efccaabfd37 in __libc_message () from /lib64/libc.so.6
#3 0x00007efccaac8499 in _int_free () from /lib64/libc.so.6
#4 0x00007efccaa80c00 in __run_exit_handlers () from /lib64/libc.so.6
#5 0x00007efccaa80c27 in exit () from /lib64/libc.so.6
#6 0x00007efc5531808d in ?? () from
<snip>/mxnet/lib/python3.9/site-packages/mxnet/libmxnet.so
#7 <signal handler called>
#8 0x00007efbc1836061 in ?? () from
/opt/apps/cudnn/8.2.4_cuda10.2/lib64/libcudnn_ops_infer.so.8
#9 0x00007efbc1861c00 in ?? () from
/opt/apps/cudnn/8.2.4_cuda10.2/lib64/libcudnn_ops_infer.so.8
#10 0x00007efbc0fa7edf in cudnnDestroy () from
/opt/apps/cudnn/8.2.4_cuda10.2/lib64/libcudnn_ops_infer.so.8
#11 0x00007efc552619b6 in mshadow::Stream<mshadow::gpu>::DestroyDnnHandle()
() from <snip>/mxnet/lib/python3.9/site-packages/mxnet/libmxnet.so
#12 0x00007efc55261b78 in void
mshadow::DeleteStream<mshadow::gpu>(mshadow::Stream<mshadow::gpu>*) () from
<snip>/mxnet/lib/python3.9/site-packages/mxnet/libmxnet.so
#13 0x00007efc55276607 in void
mxnet::engine::ThreadedEnginePerDevice::GPUWorker<(dmlc::ConcurrentQueueType)0>(mxnet::Context,
bool,
mxnet::engine::ThreadedEnginePerDevice::ThreadWorkerBlock<(dmlc::ConcurrentQueueType)0>*,
std::shared_ptr<dmlc::ManualEvent> const&) () from
<snip>/mxnet/lib/python3.9/site-packages/mxnet/libmxnet.so
#14 0x00007efc5527683e in std::_Function_handler<void
(std::shared_ptr<dmlc::ManualEvent>),
mxnet::engine::ThreadedEnginePerDevice::PushToExecute(mxnet::engine::OprBlock*,
bool)::{lambda()#4}::operator()()
const::{lambda(std::shared_ptr<dmlc::ManualEvent>)#1}>::_M_invoke(std::_Any_data
const&, std::shared_ptr<dmlc::ManualEvent>) ()
from <snip>/mxnet/lib/python3.9/site-packages/mxnet/libmxnet.so
#15 0x00007efc5527381b in
std::thread::_Impl<std::_Bind_simple<std::function<void
(std::shared_ptr<dmlc::ManualEvent>)> (std::shared_ptr<dmlc::ManualEvent>)>
>::_M_run() ()
from <snip>/mxnet/lib/python3.9/site-packages/mxnet/libmxnet.so
#16 0x00007efc84cba2bd in std::execute_native_thread_routine_compat
(__p=<optimized out>)
at
/home/builder/ktietz/cos6/ci_cos6/ctng-compilers_1622658800915/work/.build/x86_64-conda-linux-gnu/src/gcc/libstdc++-v3/src/c++11/thread.cc:94
#17 0x00007efccae1be25 in start_thread () from /lib64/libpthread.so.0
#18 0x00007efccab45bad in clone () from /lib64/libc.so.6
```
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