From 87550fc6571968c61afbb23f0bc0b079b6cd8527 Mon Sep 17 00:00:00 2001
From: Karol Herbst <kherbst@redhat.com>
Date: Fri, 7 Nov 2025 17:40:44 +0100
Subject: [PATCH] st/interop: fix fence leak

Cc: mesa-stable
Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/14050
Fixes: 1396dc1c387 ("mesa/st, dri2, wgl, glx: Modify flush_objects interop func to export a fence_fd")
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/38310>
---
 src/mesa/state_tracker/st_interop.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/mesa/state_tracker/st_interop.c b/src/mesa/state_tracker/st_interop.c
index 531b57aeb7b..555dba7d9c2 100644
--- a/src/mesa/state_tracker/st_interop.c
+++ b/src/mesa/state_tracker/st_interop.c
@@ -437,6 +437,7 @@ st_interop_flush_objects(struct st_context *st,
             struct pipe_fence_handle *fence = NULL;
             ctx->pipe->flush(ctx->pipe, &fence, PIPE_FLUSH_FENCE_FD | PIPE_FLUSH_ASYNC);
             *out->fence_fd = ctx->screen->fence_get_fd(ctx->screen, fence);
+            ctx->screen->fence_reference(ctx->screen, &fence, NULL);
          }
          out->version = MIN2(out->version, 1);
       } else {