diff --git a/tokio/src/task/blocking.rs b/tokio/src/task/blocking.rs
index dbd6edaaed3..88a8ae6a625 100644
--- a/tokio/src/task/blocking.rs
+++ b/tokio/src/task/blocking.rs
@@ -65,6 +65,21 @@ cfg_rt_multi_thread! {
/// # }
/// ```
///
+ ///
+ ///
+ /// If a future comprises different branches that attempt to acquire the same async [`Mutex`]
+ /// (e.g. [`select`] branches), then calling `lock` via `block_in_place` and `block_on` in one
+ /// branch can **deadlock** if another branch had previously yielded while waiting for the same
+ /// mutex. This happens because the yielded branch holds a position in the mutex's (FIFO) wait
+ /// queue that cannot be fulfilled. Hence the future fails to make progress.
+ ///
+ /// See [#7892](https://github.com/tokio-rs/tokio/issues/7892) for more information.
+ ///
+ /// [`Mutex`]: struct@crate::sync::Mutex
+ /// [`select`]: macro@crate::select
+ ///
+ ///
+ ///
/// # Panics
///
/// This function panics if called from a [`current_thread`] runtime.