Stefan Dirsch
4fe3fcb083
Fixes for BNC#866445 OBS-URL: https://build.opensuse.org/request/show/225987 OBS-URL: https://build.opensuse.org/package/show/X11:XOrg/Mesa?expand=0&rev=362
86 lines
3.5 KiB
Diff
86 lines
3.5 KiB
Diff
From 507f0230d4ca2238c818006499e21abb4c133203 Mon Sep 17 00:00:00 2001
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From: Ilia Mirkin <imirkin@alum.mit.edu>
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Date: Thu, 06 Mar 2014 03:25:55 +0000
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Subject: nouveau: fix fence waiting logic in screen destroy
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nouveau_fence_wait has the expectation that an external entity is
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holding onto the fence being waited on, not that it is merely held onto
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by the current pointer. Fixes a use-after-free in nouveau_fence_wait
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when used on the screen's current fence.
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Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=75279
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Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
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Reviewed-by: Christoph Bumiller <e0425955@student.tuwien.ac.at>
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Cc: "9.2 10.0 10.1" <mesa-stable@lists.freedesktop.org>
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---
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diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
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index 82f2c06..5378913 100644
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--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
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+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
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@@ -308,10 +308,16 @@ nv30_screen_destroy(struct pipe_screen *pscreen)
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if (!nouveau_drm_screen_unref(&screen->base))
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return;
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- if (screen->base.fence.current &&
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- screen->base.fence.current->state >= NOUVEAU_FENCE_STATE_EMITTED) {
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- nouveau_fence_wait(screen->base.fence.current);
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- nouveau_fence_ref (NULL, &screen->base.fence.current);
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+ if (screen->base.fence.current) {
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+ struct nouveau_fence *current = NULL;
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+
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+ /* nouveau_fence_wait will create a new current fence, so wait on the
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+ * _current_ one, and remove both.
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+ */
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+ nouveau_fence_ref(screen->base.fence.current, ¤t);
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+ nouveau_fence_wait(current);
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+ nouveau_fence_ref(NULL, ¤t);
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+ nouveau_fence_ref(NULL, &screen->base.fence.current);
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}
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nouveau_object_del(&screen->query);
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diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
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index ab0d63e..e8c7fe3 100644
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--- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c
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+++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c
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@@ -294,8 +294,15 @@ nv50_screen_destroy(struct pipe_screen *pscreen)
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return;
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if (screen->base.fence.current) {
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- nouveau_fence_wait(screen->base.fence.current);
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- nouveau_fence_ref (NULL, &screen->base.fence.current);
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+ struct nouveau_fence *current = NULL;
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+
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+ /* nouveau_fence_wait will create a new current fence, so wait on the
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+ * _current_ one, and remove both.
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+ */
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+ nouveau_fence_ref(screen->base.fence.current, ¤t);
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+ nouveau_fence_wait(current);
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+ nouveau_fence_ref(NULL, ¤t);
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+ nouveau_fence_ref(NULL, &screen->base.fence.current);
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}
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if (screen->base.pushbuf)
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screen->base.pushbuf->user_priv = NULL;
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diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
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index 044847d..04f3088 100644
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--- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
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+++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
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@@ -340,7 +340,14 @@ nvc0_screen_destroy(struct pipe_screen *pscreen)
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return;
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if (screen->base.fence.current) {
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- nouveau_fence_wait(screen->base.fence.current);
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+ struct nouveau_fence *current = NULL;
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+
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+ /* nouveau_fence_wait will create a new current fence, so wait on the
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+ * _current_ one, and remove both.
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+ */
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+ nouveau_fence_ref(screen->base.fence.current, ¤t);
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+ nouveau_fence_wait(current);
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+ nouveau_fence_ref(NULL, ¤t);
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nouveau_fence_ref(NULL, &screen->base.fence.current);
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}
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if (screen->base.pushbuf)
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--
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cgit v0.9.0.2-2-gbebe
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