On Fri, Mar 26, 2021 at 07:57:52AM +0100, Harald Dunkel wrote:
> Hi folks,
>
> using
>
> dd if=ubuntu-20.10-desktop-amd64.iso bs=64k of=/dev/sdx
>
> on 5.11.10 to write a live iso to USB stick dd never returns.
>
> lsof shows that the file handles for source and destination
> have been closed, but dd doesn't exit. It cannot be interrupted
> or killed, either. If I run "sync" in another terminal, then this
> gets stuck as well.
>
> I could reproduce this problem using Debian's 5.10.13-1 and
> 5.11.{9,10} built from the sources in git, on Debian 10 and
> Unstable. I tried to copy the ubuntu live iso and the RHEL 8.3
> installer iso. 3 different USB sticks.
>
> There is no such problem using Debian's 4.19.0-16-amd64 kernel
> on Debian 10.
>
> Can anybody reproduce this as well?
What does the dmesg log say when this happens?
Alan Stern
