1 files changed, 4 insertions, 2 deletions

diff --git a/block/blk-mq-tag.c b/block/blk-mq-tag.c
index d53a764b05ea..be3290cc0644 100644
--- a/block/blk-mq-tag.c
+++ b/block/blk-mq-tag.c
@@ -278,9 +278,11 @@ static int bt_get(struct blk_mq_alloc_data *data,
                 /*
                  * We're out of tags on this hardware queue, kick any
                  * pending IO submits before going to sleep waiting for
-                 * some to complete.
+                 * some to complete. Note that hctx can be NULL here for
+                 * reserved tag allocation.
                  */
-                blk_mq_run_hw_queue(hctx, false);
+                if (hctx)
+                        blk_mq_run_hw_queue(hctx, false);
 
                 /*
                  * Retry tag allocation after running the hardware queue,