selftests/ublk: three bug fixes #481
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January 14, 2026 13:20
Include cmd_inflight in ublk_thread_is_done() check. Without this, the thread may exit before all FETCH commands are completed, which may cause device deletion to hang. Fixes: 6aecda0 ("selftests: ublk: add kernel selftests for ublk") Signed-off-by: Ming Lei <ming.lei@redhat.com>
Fix error handling in ublk_start_daemon() when start_dev fails: 1. Call ublk_ctrl_stop_dev() to cancel inflight uring_cmd before cleanup. Without this, the device deletion may hang waiting for I/O completion that will never happen. 2. Add fail_start label so that pthread_join() is called on the error path. This ensures proper thread cleanup when startup fails. Fixes: 6aecda0 ("selftests: ublk: add kernel selftests for ublk") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
Initialize _evtfd to -1 in struct dev_ctx to prevent garbage output when running kublk in foreground mode. Without this, _evtfd is zero-initialized to 0 (stdin), and ublk_send_dev_event() writes binary data to stdin which appears as garbage on the terminal. Also fix debug message format string. Fixes: 6aecda0 ("selftests: ublk: add kernel selftests for ublk") Signed-off-by: Ming Lei <ming.lei@redhat.com> Reviewed-by: Caleb Sander Mateos <csander@purestorage.com>
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Pull request for series with
subject: selftests/ublk: three bug fixes
version: 1
url: https://patchwork.kernel.org/project/linux-block/list/?series=1041659