SegFault when adding rtlsdr flow

[johnavich]

What happened? When adding a GRC flow, the app crashes with the following in syslog: Jan 4 19:50:21 np3 kernel: [79027.967650] gnuradio-compan[235862]: segfault at 7f1642acbab7 ip 00007f15e6bc58ea sp 00007ffdefdd5170 error 7 in _imagingft.cpython-38-x86_64-linux-gnu.so[7f15e6bbd000+b000] Jan 4 19:50:21 np3 kernel: [79027.967658] Code: e8 7b ae ff ff 48 85 c0 48 89 03 0f 84 bf 01 00 00 48 8d 35 28 11 00 00 48 89 c7 e8 10 b3 ff ff 48 8b 2d 29 1f 20 00 48 85 c0 <48> 89 45 00 0f 84 6c 01 00 00 48 8b 3b 48 8d 35 9a 10 00 00 e8 ed

System Information OS: Ubuntu 20.04.3 GR Installation Method: apt

GNU Radio Version 3.8 (maint-3.8)

Specific Version 3.8.3.1

Steps to Reproduce the Problem Add flow for any radio from gr-smart_meters. Segfault occurs immediately.

Relevant log output

Jan  4 19:50:21 np3 kernel: [79027.967650] gnuradio-compan[235862]: segfault at 7f1642acbab7 ip 00007f15e6bc58ea sp 00007ffdefdd5170 error 7 in _imagingft.cpython-38-x86_64-linux-gnu.so[7f15e6bbd000+b000]
Jan  4 19:50:21 np3 kernel: [79027.967658] Code: e8 7b ae ff ff 48 85 c0 48 89 03 0f 84 bf 01 00 00 48 8d 35 28 11 00 00 48 89 c7 e8 10 b3 ff ff 48 8b 2d 29 1f 20 00 48 85 c0 <48> 89 45 00 0f 84 6c 01 00 00 48 8b 3b 48 8d 35 9a 10 00 00 e8 ed