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sna/dri: Add a bunch of assertions for hunting a use-after-free 

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
This commit is contained in:
Chris Wilson 2012-09-14 13:04:14 +01:00
parent d875609147
commit d2dbb99138
2 changed files with 8 additions and 0 deletions
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1
src/sna/sna_display.c
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@ -2495,6 +2495,7 @@ sna_page_flip(struct sna *sna,
int count;
DBG(("%s: handle %d attached\n", __FUNCTION__, bo->handle));
assert(bo->refcnt);
kgem_submit(&sna->kgem);

7
src/sna/sna_dri.c
View File

@ -115,6 +115,7 @@ get_private(DRI2Buffer2Ptr buffer)
static inline struct kgem_bo *ref(struct kgem_bo *bo)
{
assert(bo->refcnt);
bo->refcnt++;
return bo;
}
@ -877,6 +878,8 @@ sna_dri_remove_frame_event(WindowPtr win,
while (chain->chain != info)
chain = chain->chain;
assert(chain != info);
assert(info->chain != chain);
chain->chain = info->chain;
}
@ -912,8 +915,11 @@ sna_dri_add_frame_event(DrawablePtr draw, struct sna_dri_frame_event *info)
return;
}
assert(chain != info);
while (chain->chain != NULL)
chain = chain->chain;
assert(chain != info);
chain->chain = info;
}
@ -2031,6 +2037,7 @@ blit:
CREATE_SCANOUT | CREATE_EXACT);
name = kgem_bo_flink(&sna->kgem, bo);
}
assert(bo->refcnt);
get_private(info->back)->bo = bo;
info->back->name = name;