This bug is present in all kernels tested from 4.15. Tested kernels are at the end of this comment. The bug appears to depend heavily on the speed of data. For example it works erasing a disk with all kernels with dd if=/dev/urandom, but not with faster if=/dev/zero or if="openssl" (exact syntax in attached test-script).
Linux 5.4.0-37-generic #41-Ubuntu SMP Wed Jun 3 18:57:02 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux Linux 5.0.1-050001-generic #201903100732 SMP Sun Mar 10 07:33:53 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux Linux 4.17.0-041700-generic #201806041953 SMP Mon Jun 4 19:55:25 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux Linux 4.16.18-041618-generic #201806252030 SMP Tue Jun 26 00:33:13 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux Linux 4.16.1-041601-generic #201804081334 SMP Sun Apr 8 13:35:48 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux Linux 4.15.18-041518-generic #201804190330 SMP Thu Apr 19 07:34:21 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux Linux 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux ** Attachment added: "test script" https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886172/+attachment/5394463/+files/test.sh -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886172 Title: high speed data to usb disk makes the kernel think that is has been unmounted To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886172/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
