Public bug reported: There is a discussion at https://www.reddit.com/r/RTLSDR/comments/ds73ow/rtl_process_being_killed_newbie_troubleshooting/ for reference.
When installed with the default librtlsdr-dev, the rtl apps crash on Ubuntu 20.04 LTS with this error sequence. This example is from rtl-test: Reading samples in async mode... Allocating 15 zero-copy buffers Killed The relevant patch from upstream is https://github.com/steve-m/librtlsdr/commit/81833a1cf6288fee93a9157c0f60cafb5ec340b9 lib: disable usbfs zero-copy support by default Although we added a detection mechanism for the presence of the Kernel bug earlier, reading from the incorrectly mapped memory might cause a bus error on some ARM systems. With the overall performance benefit being rather minimal for the data rates of rtl-sdr, disable zero-copy by default. ** Affects: rtl-sdr (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1876624 Title: rtl apps crash "allocating zero-copy buffers", Pi 4, Ubuntu 20.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/rtl-sdr/+bug/1876624/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
