On Mon, May 05, 2025 at 07:06:37PM +0300, Jared Holzman wrote: > Hi Ming, > > I'm attempting to back port the fix for this issue to the 6.14-stable branch. > > Greg Kroah-Hartman has already applied d6aa0c178bf8 - "ublk: call ublk_dispatch_req() for handling UBLK_U_IO_NEED_GET_DATA", > but was unable to apply f40139fde527 cleanly. > > I created the patch below. It applies and compiles, but when I rerun the scenario I get several hung tasks waiting on the ub->mutex > which is being held by the following task: Hi Jared, You need to pull in the following patchset too: https://lore.kernel.org/linux-block/20250416035444.99569-1-ming.lei@xxxxxxxxxx/ which avoids ub->mutex in error handling code path. I just picked them in the following tree: https://github.com/ming1/linux/commits/linux-6.14.y/ Please test and see if they work for you. Thanks, Ming
