The following patch to radeon_sa_bo_new that
went into 3.10.99
commit 8d5e1e5af0c667545c202e8f4051f77aa3bf31b7
Author: Nicolai Hähnle <nicolai.haeh...@amd.com>
Date: Fri Feb 5 14:35:53 2016 -0500
drm/radeon: hold reference to fences in radeon_sa_bo_new
commit f6ff4f67cdf8455d0a4226eeeaf5af17c37d05eb upstream.
is triggering an Oops for me right when xscreensaver
first began doing 3D stuff. After reverting this
patch, xscreensaver has been happily running 3D stuff.
Mar 6 18:00:43 sage kernel: BUG: unable to handle kernel NULL pointer
dereference at 0000000000000008
Mar 6 18:00:43 sage kernel: IP: [<ffffffffa010345d>] radeon_fence_ref+0xd/0x50
[radeon]
Mar 6 18:00:43 sage kernel: PGD 799e1d067 PUD 819186067 PMD 0
Mar 6 18:00:43 sage kernel: Oops: 0002 [#1] SMP
Mar 6 18:00:43 sage kernel: Stack:
Mar 6 18:00:43 sage kernel: ffffffffa01607ec ffff88108a4e8000
ffff88108a4e8000 ffff880888fbc000
Mar 6 18:00:43 sage kernel: ffff880ecbf11c78 0000fe2001000006
0000000000000000 0020000000000100
Mar 6 18:00:43 sage kernel: 00000000000d1200 ffff880ecbf11c14
0000000000000000 0000000000000000
Mar 6 18:00:43 sage kernel: Call Trace:
Mar 6 18:00:43 sage kernel: [<ffffffffa01607ec>] ?
radeon_sa_bo_new+0x2ac/0x4f0 [radeon]
Mar 6 18:00:43 sage kernel: [<ffffffffa005fc9d>] ?
ttm_eu_list_ref_sub+0x3d/0x60 [ttm]
Mar 6 18:00:43 sage kernel: [<ffffffffa0117c49>] radeon_ib_get+0x39/0x110
[radeon]
Mar 6 18:00:43 sage kernel: [<ffffffffa011a4ea>] radeon_cs_ioctl+0x69a/0xa70
[radeon]
Mar 6 18:00:43 sage kernel: [<ffffffffa008e2d2>] drm_ioctl+0x512/0x650 [drm]
Mar 6 18:00:43 sage kernel: [<ffffffff810a46e1>] ? do_futex+0x111/0xc30
Mar 6 18:00:43 sage kernel: [<ffffffff81182a45>] do_vfs_ioctl+0x305/0x520
Mar 6 18:00:43 sage kernel: [<ffffffff8107cd39>] ?
vtime_account_user+0x69/0x80
Mar 6 18:00:43 sage kernel: [<ffffffff81182ce1>] SyS_ioctl+0x81/0xa0
Mar 6 18:00:43 sage kernel: [<ffffffff8178210f>] tracesys+0xe1/0xe6
$ lspci | grep VGA
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] Redwood XT [Radeon HD 5670/5690/5730]
-Erik
--
Erik B. Andersen
--This message was written using 73% post-consumer electrons--
