[Bug 94727] [NV30/NV40] nouveau/pushbuf.c:238: pushbuf_krel: Assertion `bkref` failed. - bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ

From: bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org
To: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
Subject: [Bug 94727] [NV30/NV40] nouveau/pushbuf.c:238: pushbuf_krel: Assertion `bkref` failed.
Date: Tue, 06 Dec 2016 19:42:15 +0000	[thread overview]
Message-ID: <bug-94727-8800-YLTgMETFEI@http.bugs.freedesktop.org/> (raw)
In-Reply-To: <bug-94727-8800-V0hAGp6uBxMKqLRl/0Ahz6D7qz1kEfGD2LY78lusg7I@public.gmane.org/>

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https://bugs.freedesktop.org/show_bug.cgi?id=94727

--- Comment #8 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
OK, well staring at the code didn't do me much good.

bkref == NULL means that the pushbuf thing doesn't know about the bo we're
trying to reloc. However just a few lines above in nv30_transfer_rect_m2mf we
do

nouveau_pushbuf_refn (push, refs, 2)

which should tell it about the src/dst bo's. So either there's concurrency
going on, or something's not working as advertised. In the no-concurrency case,
I'd need repro steps (that can't start with "install tons of software").

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