Re: linux-next: Tree for December 17 (Radeon DRM BUG)

Kevin Winchester
2008-12-18T00:14:38Z

Stephen Rothwell wrote:
> Hi all,
>
>

I get the following BUG in the radeon drm code with today's linux-next
when I run "startx". I have not built or tested linux-next in a while,
but the problem definitely does not occur in mainline.

Dec 17 20:02:41 winchester [ 43.741709] BUG: unable to handle kernel
NULL pointer dereference at 0000000000000000
Dec 17 20:02:41 winchester [ 43.741723] IP: [<ffffffff8038411d>]
radeon_cp_init+0x311/0x9f6
Dec 17 20:02:41 winchester [ 43.741740] PGD 4d501067 PUD 4d533067 PMD 0
Dec 17 20:02:41 winchester [ 43.741747] Oops: 0002 [#1]
Dec 17 20:02:41 winchester [ 43.741751] last sysfs file:
/sys/devices/pci0000:00/0000:00:01.0/0000:01:00.0/resource
Dec 17 20:02:41 winchester [ 43.741757] CPU 0
Dec 17 20:02:41 winchester [ 43.741760] Modules linked in:
Dec 17 20:02:41 winchester [ 43.741766] Pid: 3630, comm: X Not tainted
2.6.28-rc8-next-20081217 #192
Dec 17 20:02:41 winchester [ 43.741771] RIP:
0010:[<ffffffff8038411d>] [<ffffffff8038411d>] radeon_cp_init+0x311/0x9f6
Dec 17 20:02:41 winchester [ 43.741780] RSP: 0018:ffff88004d575e18
EFLAGS: 00010282
Dec 17 20:02:41 winchester [ 43.741784] RAX: ffff88004f36d640 RBX:
ffff88004f257400 RCX: ffff88004f36d640
Dec 17 20:02:41 winchester [ 43.741789] RDX: 0000002000000002 RSI:
ffff88004f3fd000 RDI: ffff88004f085800
Dec 17 20:02:41 winchester [ 43.741793] RBP: ffff88004d575e38 R08:
ffff88004d559600 R09: ffff88004d575ef8
Dec 17 20:02:41 winchester [ 43.741798] R10: 0000000000000000 R11:
0000000000003202 R12: ffff88004f085800
Dec 17 20:02:41 winchester [ 43.741802] R13: ffff88004eb9d500 R14:
0000000000000000 R15: ffff88004eb9db00
Dec 17 20:02:41 winchester [ 43.741808] FS: 00007f845ffa26f0(0000)
GS:ffffffff80699e40(0000) knlGS:0000000000000000
Dec 17 20:02:41 winchester [ 43.741813] CS: 0010 DS: 0000 ES: 0000
CR0: 000000008005003b
Dec 17 20:02:41 winchester [ 43.741817] CR2: 0000000000000000 CR3:
000000004d55f000 CR4: 00000000000006e0
Dec 17 20:02:41 winchester [ 43.741822] DR0: 0000000000000000 DR1:
0000000000000000 DR2: 0000000000000000
Dec 17 20:02:41 winchester [ 43.741826] DR3: 0000000000000000 DR6:
00000000ffff0ff0 DR7: 0000000000000400
Dec 17 20:02:41 winchester [ 43.741832] Process X (pid: 3630,
threadinfo ffff88004d574000, task ffff88004f287330)
Dec 17 20:02:41 winchester [ 43.741835] Stack:
Dec 17 20:02:41 winchester [ 43.741838] 00000000fffffff4
0000000040786440 ffff88004f085800 ffffffff80383e0c
Dec 17 20:02:41 winchester [ 43.741845] ffff88004d575e98
ffffffff8037249e ffff88004d575e48 ffff88004d575e48
Dec 17 20:02:41 winchester [ 43.741852] 00007fff67fbf5a0
ffff88004eb9d500 ffff88004f08583c ffff88004d559600
Dec 17 20:02:41 winchester [ 43.741860] Call Trace:
Dec 17 20:02:41 winchester [ 43.741865] [<ffffffff80383e0c>] ?
radeon_cp_init+0x0/0x9f6
Dec 17 20:02:41 winchester [ 43.741871] [<ffffffff8037249e>]
drm_ioctl+0x1de/0x270
Dec 17 20:02:41 winchester [ 43.741881] [<ffffffff80298d2e>]
vfs_ioctl+0x4a/0x55
Dec 17 20:02:41 winchester [ 43.741890] [<ffffffff8029911a>]
do_vfs_ioctl+0x3b2/0x3ff
Dec 17 20:02:41 winchester [ 43.741896] [<ffffffff8028d0fa>] ?
fsnotify_modify+0x4e/0x53
Dec 17 20:02:41 winchester [ 43.741904] [<ffffffff802991ac>]
sys_ioctl+0x45/0x80
Dec 17 20:02:41 winchester [ 43.741910] [<ffffffff8028de98>] ?
sys_write+0x62/0x72
Dec 17 20:02:41 winchester [ 43.741917] [<ffffffff8020b94b>]
system_call_fastpath+0x16/0x1b
Dec 17 20:02:41 winchester [ 43.741925] Code: 00 00 49 8b 45 60 48 89
83 f8 00 00 00 49 8b 45 68 48 89 83 00 01 00 00 49 8b 45 70 48 89 83 08
01 00 00 e8 7e da fe ff 48 85 c0 <49> 89 06 48 c7 c6 b0 4e 4d 80 48 c7
c7 13 4a 5c 80 0f 84 a7 fd
Dec 17 20:02:41 winchester [ 43.741970] RIP [<ffffffff8038411d>]
radeon_cp_init+0x311/0x9f6
Dec 17 20:02:41 winchester [ 43.741977] RSP <ffff88004d575e18>
Dec 17 20:02:41 winchester [ 43.741980] CR2: 0000000000000000
Dec 17 20:02:41 winchester [ 43.741984] ---[ end trace
dc6d31ddec008340 ]---
Dec 17 20:02:41 winchester [ 43.761235] [drm:drm_release] *ERROR*
Device busy: 1

What other information can I provide?

--
Kevin Winchester