linux-kernel - Re: i915 #GP [was: mmotm 2010-02-01-16-25 uploaded]

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Date:	Fri, 05 Feb 2010 22:32:23 +0100
From:	Jiri Slaby <jirislaby@...il.com>
To:	adi@...apodia.org
CC:	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	mm-commits@...r.kernel.org, airlied@...ux.ie,
	dri-devel@...ts.sourceforge.net, zhenyuw@...ux.intel.com,
	Eric Paris <eparis@...hat.com>, Tejun Heo <tj@...nel.org>,
	Roel Kluin <roel.kluin@...il.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>
Subject: Re: i915 #GP [was: mmotm 2010-02-01-16-25 uploaded]

On 02/05/2010 09:34 AM, Jiri Slaby wrote:
> On 02/03/2010 10:41 PM, Jiri Slaby wrote:
>> On 02/02/2010 01:25 AM, akpm@...ux-foundation.org wrote:
>>> The mm-of-the-moment snapshot 2010-02-01-16-25 has been uploaded to
>>
>> Hi, when thunderbird appears on clean X+xterm I get this with the snapshot:
>> [drm:i915_gem_do_execbuffer] *ERROR* Invalid object handle 1073741824 at
>> index 1
>> general protection fault: 0000 [#1] SMP
>> last sysfs file: /sys/devices/pci0000:00/0000:00:1e.0/0000:04:00.0/resource
>> CPU 0
>> Pid: 3412, comm: X Not tainted 2.6.33-rc6-mm1_64+ #941 To be filled by
>> O.E.M./To Be Filled By O.E.M.
>> RIP: 0010:[<ffffffff812579ef>]  [<ffffffff812579ef>]
>> i915_gem_do_execbuffer+0x3ef/0xbf0
>> RSP: 0018:ffff8801c2313c68  EFLAGS: 00010202
>> RAX: ffff8801c2f6a7c8 RBX: 0000000000000002 RCX: 0000000000000049
>> RDX: 6b6b6b6b6b6b6b6b RSI: ffffffff81237e70 RDI: ffff8801c2a28738
>> RBP: ffff8801c2313d18 R08: 0000000000000000 R09: 0000000002000000
>> R10: 0000000000000000 R11: 0000000000000004 R12: ffff8801c2f6a7b8
>> R13: ffff8801c2313d38 R14: 0000000000000000 R15: 00000000fffffff7
>> FS:  00007f4910c476f0(0000) GS:ffff880100200000(0000) knlGS:0000000000000000
>> CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> CR2: 00007f48fb928000 CR3: 00000001c2cd5000 CR4: 00000000000006f0
>> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
>> DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
>> Process X (pid: 3412, threadinfo ffff8801c2312000, task ffff8801c3539c00)
>> Stack:
>>  ffffffff81803580 00000000000000d0 ffff8801c2e043d8 0000000000d7ba90
>> <0> 0000000000000060 ffffffff810be556 ffff8801c5f918f8 ffff8801c2f6a7b8
>> <0> ffff8801cbc0a048 0000000000000000 ffff8801c2f6a7b8 ffff8801c5f918d8
>> Call Trace:
>>  [<ffffffff810be556>] ? __slab_alloc+0x266/0x2f0
>>  [<ffffffff81258584>] i915_gem_execbuffer+0x1b4/0x360
>>  [<ffffffff81253516>] ? i915_gem_sw_finish_ioctl+0x96/0xd0
>>  [<ffffffff812363ed>] drm_ioctl+0x1bd/0x480
>>  [<ffffffff8108fe12>] ? unlock_page+0x22/0x30
>>  [<ffffffff812583d0>] ? i915_gem_execbuffer+0x0/0x360
>>  [<ffffffff810a9dbb>] ? handle_mm_fault+0x18b/0x3c0
>>  [<ffffffff810d7468>] vfs_ioctl+0x38/0xd0
>>  [<ffffffff810d7ca0>] do_vfs_ioctl+0x80/0x340
>>  [<ffffffff81024841>] ? do_page_fault+0x131/0x2d0
>>  [<ffffffff810d7faa>] sys_ioctl+0x4a/0x80
>>  [<ffffffff81002e6b>] system_call_fastpath+0x16/0x1b
>> Code: 44 8b 5a 08 45 85 db 74 4f 31 db 4c 8b 65 a0 49 89 d5 66 2e 0f 1f
>> 84 00 00 00 00 00 48 63 c3 49 8d 04 c4 48 8b 10 48 85 d2 74 25 <48> 8b
>> 92 80 00 00 00 c7 82 a0 00 00 00 00 00 00 00 48 8b 38 48
>> RIP  [<ffffffff812579ef>] i915_gem_do_execbuffer+0x3ef/0xbf0
>>  RSP <ffff8801c2313c68>
>> ---[ end trace 99140c91bbc9294a ]---
>>
>>
>> opposing to 2010-01-15-15-34 which was OK. This is a setup with no KMS
>> with 2.9.1 intel X drv.
> 
> 
> 
> 
>> Does reverting 859ddf09743a8cc680af33f7259ccd0fd36bfe9d help?
> 
> For me it fixes the problem.

(Adding some CCs)

And when I revert
drivers-gpu-drm-drm_crtc_helperc-fix-setting-of-fb_changed-in-drm_crtc_helper_set_config.patch

I can even use KMS with intel.

The fb_changed patch causes X to not render the screen, I can blindly
move windows after X starts, cursors changes, but the screen is always
black.

regards,
-- 
js
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