This patchset backports a series of ublk fixes from upstream to 6.14-stable.
Patch 7 fixes the race that can cause kernel panic when ublk server daemon is exiting.
It depends on patches 1-6 which simplifies & improves IO canceling when ublk server daemon is exiting as described here:
https://lore.kernel.org/linux-block/20250416035444.99569-1-ming.lei@redhat.c...
Ming Lei (5): ublk: add helper of ublk_need_map_io() ublk: move device reset into ublk_ch_release() ublk: remove __ublk_quiesce_dev() ublk: simplify aborting ublk request ublk: fix race between io_uring_cmd_complete_in_task and ublk_cancel_cmd
Uday Shankar (2): ublk: properly serialize all FETCH_REQs ublk: improve detection and handling of ublk server exit
drivers/block/ublk_drv.c | 550 +++++++++++++++++++++------------------ 1 file changed, 291 insertions(+), 259 deletions(-)