Mesa (master): drisw: Fix shared memory leak on drawable resize

[GitLab Mirror]

Module: Mesa
Branch: master
Commit: c5a2ccec5e9fa60bbec5e7b574877f8af4c14462
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=c5a2ccec5e9fa60bbec5e7b574877f8af4c14462

Author: Andreas Gottschling <andreasgottschling at outlook.de>
Date:   Fri Sep 27 12:02:06 2019 -0400

drisw: Fix shared memory leak on drawable resize

XDestroyImage will mark the segment as to-be-destroyed, but it will
persist until we detach it, and we weren't doing so.

Cc: mesa-stable at lists.freedesktop.org
Gitlab: https://gitlab.freedesktop.org/mesa/mesa/issues/121
Reviewed-by: Adam Jackson <ajax at redhat.com>

---

 src/glx/drisw_glx.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/glx/drisw_glx.c b/src/glx/drisw_glx.c
index 45a61e654c7..3bf15322ff8 100644
--- a/src/glx/drisw_glx.c
+++ b/src/glx/drisw_glx.c
@@ -56,6 +56,8 @@ XCreateDrawable(struct drisw_drawable * pdp, int shmid, Display * dpy)
    if (pdp->ximage) {
       XDestroyImage(pdp->ximage);
       pdp->ximage = NULL;
+      if ((pdp->shminfo.shmid > 0) && (shmid != pdp->shminfo.shmid))
+         XShmDetach(dpy, &pdp->shminfo);
    }
 
    if (!xshm_error && shmid >= 0) {