Mesa (master): glx/drisw: return false if shmid == -1
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Tue Feb 25 01:38:37 UTC 2020
Module: Mesa
Branch: master
Commit: 246e4aeaef4c1f1071c64e9681fc9229aac22020
URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=246e4aeaef4c1f1071c64e9681fc9229aac22020
Author: Dave Airlie <airlied at redhat.com>
Date: Mon Feb 24 10:19:51 2020 +1000
glx/drisw: return false if shmid == -1
If an attempt to create an shm pixmap in XCreateDrawable fails
then it ends up with the shmid == -1. This means the get image
path needs to fallback so return false in this case to use the
non-shm get image path.
Fixes: 02c3dad0f3b4 ("Call shmget() with permission 0600 instead of 0777")
Reviewed-by: Michel Dänzer <mdaenzer at redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3823>
---
src/glx/drisw_glx.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/glx/drisw_glx.c b/src/glx/drisw_glx.c
index 6e37f0274b0..dfa3218d759 100644
--- a/src/glx/drisw_glx.c
+++ b/src/glx/drisw_glx.c
@@ -303,6 +303,9 @@ swrastGetImageShm2(__DRIdrawable * read,
if (!XCreateDrawable(prp, shmid, dpy))
return GL_FALSE;
}
+
+ if (prp->shminfo.shmid == -1)
+ return GL_FALSE;
readable = pread->xDrawable;
ximage = prp->ximage;
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