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From: Alexei Podtelezhnikov <apodtele@gmail.com>
To: intel-gfx@lists.freedesktop.org
Subject: [Intel-gfx] [PATCH xf86-video-intel] sna: Fix double-free crashes
Date: Tue,  7 Apr 2020 22:41:33 -0400	[thread overview]
Message-ID: <20200408024133.5699-1-apodtele@gmail.com> (raw)

Fix double-free crashes.
See https://bugzilla.redhat.com/show_bug.cgi?id=1808767

Signed-off-by:  Alexei Podtelezhnikov <apodtele@gmail.com>
---
 src/sna/kgem.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/sna/kgem.c b/src/sna/kgem.c
index 6a35067c..9865a912 100644
--- a/src/sna/kgem.c
+++ b/src/sna/kgem.c
@@ -3079,6 +3079,9 @@ static void kgem_buffer_release(struct kgem *kgem, struct kgem_buffer *bo)
 		assert(cached != &bo->base);
 		list_del(&cached->vma);
 
+               if (!cached->map__gtt)
+                       continue;
+
 		assert(*(struct kgem_bo **)cached->map__gtt == cached);
 		*(struct kgem_bo **)cached->map__gtt = NULL;
 		cached->map__gtt = NULL;
-- 
2.26.0

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             reply	other threads:[~2020-04-08  2:42 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-08  2:41 Alexei Podtelezhnikov [this message]
2020-04-08  2:55 ` [Intel-gfx] ✗ Fi.CI.BUILD: failure for sna: Fix double-free crashes Patchwork
  -- strict thread matches above, loose matches on Subject: below --
2020-04-08  3:09 [Intel-gfx] [PATCH xf86-video-intel] " Alexei Podtelezhnikov
2020-04-08  7:09 ` Chris Wilson
2020-04-08  7:27   ` Alexei Podtelezhnikov

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