QuantizedElemwiseMulOpShape accesses out of bound elements

[leezu]

Description

MKLDNN QuantizedElemwiseMulOpShape accesses out of bound elements in line 64 during quantized_elemwise_mul test.

https://github.com/apache/incubator-mxnet/blob/ab4f7f6a7335e88034edcf61402aec170cdca5fd/src/operator/quantization/quantized_elemwise_mul.cc#L63-L65

Preventing that invalid access by adding out_attrs->size() > quantized_elemwise_mul::kOutMin to the if condition, leads to errors in infer_shape_pass.

CI with updated toolchain (ie #17984) catches the bug. See #17987 for instructions to reproduce: use recent gcc and build in debug build

CC: @xinyu-intel

[pengzhao-intel]

Thanks to reporting the issue. We will fix soon.

[pengzhao-intel]

cc @bgawrych

[leezu]

Ping @bgawrych @pengzhao-intel

Let's try to fix this and reenable the tests. Thanks for your help

[leezu]

Thanks @bgawrych