diff --git a/include/linux/stackdepot.h b/include/linux/stackdepot.h
index bf0136891a0f..f863f35cf12a 100644
--- a/include/linux/stackdepot.h
+++ b/include/linux/stackdepot.h
@@ -147,7 +147,7 @@ static inline int stack_depot_early_init(void)	{ return 0; }
  * If the provided stack trace comes from the interrupt context, only the part
  * up to the interrupt entry is saved.
  *
- * Context: Any context, but setting STACK_DEPOT_FLAG_CAN_ALLOC is required if
+ * Context: Any context, but unsetting STACK_DEPOT_FLAG_CAN_ALLOC is required if
  *          alloc_pages() cannot be used from the current context. Currently
  *          this is the case for contexts where neither %GFP_ATOMIC nor
  *          %GFP_NOWAIT can be used (NMI, raw_spin_lock).
@@ -156,7 +156,7 @@ static inline int stack_depot_early_init(void)	{ return 0; }
  */
 depot_stack_handle_t stack_depot_save_flags(unsigned long *entries,
 					    unsigned int nr_entries,
-					    gfp_t gfp_flags,
+					    gfp_t alloc_flags,
 					    depot_flags_t depot_flags);
 
 /**
@@ -175,7 +175,7 @@ depot_stack_handle_t stack_depot_save_flags(unsigned long *entries,
  * Return: Handle of the stack trace stored in depot, 0 on failure
  */
 depot_stack_handle_t stack_depot_save(unsigned long *entries,
-				      unsigned int nr_entries, gfp_t gfp_flags);
+				      unsigned int nr_entries, gfp_t alloc_flags);
 
 /**
  * stack_depot_fetch - Fetch a stack trace from stack depot
diff --git a/lib/stackdepot.c b/lib/stackdepot.c
index 91d2301fdef7..7ef575462c7a 100644
--- a/lib/stackdepot.c
+++ b/lib/stackdepot.c
@@ -637,7 +637,15 @@ depot_stack_handle_t stack_depot_save_flags(unsigned long *entries,
 			prealloc = page_address(page);
 	}
 
-	raw_spin_lock_irqsave(&pool_lock, flags);
+	if (in_nmi()) {
+		/* We can never allocate in NMI context. */
+		WARN_ON_ONCE(can_alloc);
+		/* Best effort; bail if we fail to take the lock. */
+		if (!raw_spin_trylock_irqsave(&pool_lock, flags))
+			goto exit;
+	} else {
+		raw_spin_lock_irqsave(&pool_lock, flags);
+	}
 	printk_deferred_enter();
 
 	/* Try to find again, to avoid concurrently inserting duplicates. */