From: Ondrej Zary <linux@zary.sk>
To: Ben Skeggs <bskeggs@redhat.com>
Cc: dri-devel@lists.freedesktop.org, nouveau@lists.freedesktop.org,
linux-kernel@vger.kernel.org
Subject: Re: nouveau broken on Riva TNT2 in 5.13.0-rc4: NULL pointer dereference in nouveau_bo_sync_for_device
Date: Sat, 5 Jun 2021 23:34:23 +0200 [thread overview]
Message-ID: <202106052334.23943.linux@zary.sk> (raw)
In-Reply-To: <202106052143.52488.linux@zary.sk>
On Saturday 05 June 2021 21:43:52 Ondrej Zary wrote:
> Hello,
> I'm testing 5.13.0-rc4 and nouveau crashes with NULL pointer dereference in nouveau_bo_sync_for_device.
> Found various reports like this but that was back in februaryso that should be fixed now.
So it is the same bug. Broken since 5.11. This revert fixes it in 5.11:
https://lists.freedesktop.org/archives/dri-devel/2021-February/298531.html
Added some debug printks to nouveau_bo_sync_for_device:
[ 22.225048] ttm_dma=fc33b500
[ 22.225066] ttm_dma->num_pages=18
[ 22.225071] i=0 num_pages=16
[ 22.225077] ttm_dma->dma_address=00000000
[ 22.225094] BUG: kernel NULL pointer dereference, address: 00000000
So ttm->dma_address is NULL.
--
Ondrej Zary
next prev parent reply other threads:[~2021-06-05 21:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-05 19:43 nouveau broken on Riva TNT2 in 5.13.0-rc4: NULL pointer dereference in nouveau_bo_sync_for_device Ondrej Zary
2021-06-05 21:22 ` [Nouveau] " Ilia Mirkin
2021-06-05 21:34 ` Ondrej Zary [this message]
2021-06-06 21:16 ` Ondrej Zary
2021-06-07 20:58 ` Ondrej Zary
2021-06-08 18:47 ` Ondrej Zary
2021-06-08 20:01 ` Ondrej Zary
2021-06-08 21:59 ` Ondrej Zary
2021-06-09 6:43 ` Christian König
2021-06-09 6:57 ` Ondrej Zary
2021-06-09 7:02 ` Christian König
2021-06-09 7:10 ` Ondrej Zary
2021-06-09 9:21 ` Christian König
2021-06-09 20:00 ` Ondrej Zary
2021-06-10 6:43 ` Christian König
2021-06-10 17:50 ` Ondrej Zary
2021-06-10 17:59 ` Christian König
2021-06-11 12:38 ` Christian König
2021-06-11 18:23 ` Ondrej Zary
2021-06-14 11:07 ` Christian König
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