From: Fengguang Wu <fengguang.wu@intel.com>
To: Dave Airlie <airlied@gmail.com>
Cc: Thomas Hellstrom <thellstrom@vmware.com>,
Dave Airlie <airlied@redhat.com>,
dri-devel@lists.freedesktop.org,
LKML <linux-kernel@vger.kernel.org>
Subject: Re: general protection fault on ttm_init()
Date: Sat, 7 Jul 2012 23:31:42 +0800 [thread overview]
Message-ID: <20120707153142.GA24787@localhost> (raw)
In-Reply-To: <20120707020847.GA28771@localhost>
On Sat, Jul 07, 2012 at 10:08:47AM +0800, Fengguang Wu wrote:
> On Fri, Jul 06, 2012 at 06:09:20PM +0100, Dave Airlie wrote:
> > On Fri, Jul 6, 2012 at 5:49 PM, Dave Airlie <airlied@gmail.com> wrote:
> > > On Fri, Jul 6, 2012 at 3:48 PM, Fengguang Wu <fengguang.wu@intel.com> wrote:
> > >> ... The missed kconfig.
> > >>
> > >> On Fri, Jul 06, 2012 at 10:46:22PM +0800, Fengguang Wu wrote:
> > >>> Hi Thomas,
> > >
> > > Wierd, I'm sorta tempted to just depend drm on CONFIG_PROC_FS, but it
> > > looks like the error path is failing to dtrt.
> >
> > I've attached a patch that should fix it, let me know if it works.
>
> It does not work.. The dmesg (attached) remains the same.
I got more interesting back traces in a clean kernel:
device class 'drm': registering
kobject: 'drm' (ffff88000f07f050): kobject_add_internal: parent: 'class', set: 'class'
kobject: 'drm' (ffff88000f07f050): kobject_uevent_env
kobject: 'drm' (ffff88000f07f050): fill_kobj_path: path = '/class/drm'
[drm:drm_core_init] *ERROR* Cannot create /proc/dri
device class 'drm': unregistering
kobject: 'drm' (ffff88000f07f050): kobject_cleanup
kobject: 'drm' (ffff88000f07f050): auto cleanup 'remove' event
kobject: 'drm' (ffff88000f07f050): kobject_uevent_env
kobject: 'drm' (ffff88000f07f050): fill_kobj_path: path = '/class/drm'
kobject: 'drm' (ffff88000f07f050): auto cleanup kobject_del
kobject: 'drm' (ffff88000f07f050): calling ktype release
class 'drm': release.
class_create_release called for drm
kobject: 'drm': free name
kobject: 'drm' (ffff88000f080070): kobject_cleanup
kobject: 'drm' (ffff88000f080070): calling ktype release
kobject: 'drm': free name
device: 'ttm': device_add
kobject: '(null)' (ffff88000f080230): kobject_add_internal: parent: 'virtual', set: '(null)'
kobject: 'ttm' (ffffffff824709b0): kobject_add_internal: parent: '(null)', set: 'devices'
general protection fault: 0000 [#1] SMP
CPU 1
Pid: 1, comm: swapper/0 Not tainted 3.5.0-rc5-bisect #207
RIP: 0010:[<ffffffff8115eb59>] [<ffffffff8115eb59>] sysfs_do_create_link+0x59/0x1c0
RSP: 0018:ffff880000107db0 EFLAGS: 00010206
RAX: ffff880000100000 RBX: 00cccccccccccccc RCX: 000000000000dad9
RDX: 000000000000d9d9 RSI: 0000000000000000 RDI: ffffffff8243b320
RBP: ffff880000107e00 R08: ffff880000100580 R09: fffffffffe000080
R10: ffff880000100000 R11: 0000000002000000 R12: ffffffff821622db
R13: ffff88000f080150 R14: 0000000000000001 R15: ffff88000f080308
FS: 0000000000000000(0000) GS:ffff88000df00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000000000000 CR3: 0000000002411000 CR4: 00000000000006a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper/0 (pid: 1, threadinfo ffff880000106000, task ffff880000100000)
Stack:
ffff88000f080308 0000000000000000 ffffffff824709b0 00000000000002ec
0000000000000000 0000000000000000 ffffffff824709b0 00000000000002ec
0000000000000000 ffffffff824709a0 ffff880000107e10 ffffffff8115ecce
Call Trace:
[<ffffffff8115ecce>] sysfs_create_link+0xe/0x10
[<ffffffff81580309>] device_add+0x289/0x610
[<ffffffff8255aae2>] ? drm_core_init+0xca/0xca
[<ffffffff81589d09>] ? device_pm_init+0x69/0x90
[<ffffffff8255aae2>] ? drm_core_init+0xca/0xca
[<ffffffff815806a9>] device_register+0x19/0x20
[<ffffffff8147d507>] drm_class_device_register+0x17/0x20
[<ffffffff8255ab19>] ttm_init+0x37/0x62
[<ffffffff8252ed56>] do_one_initcall+0x7a/0x139
[<ffffffff8252ef18>] kernel_init+0x103/0x187
[<ffffffff8252e614>] ? do_early_param+0x8c/0x8c
[<ffffffff81ccf334>] kernel_thread_helper+0x4/0x10
[<ffffffff81ccd8b0>] ? retint_restore_args+0x13/0x13
[<ffffffff8252ee15>] ? do_one_initcall+0x139/0x139
[<ffffffff81ccf330>] ? gs_change+0x13/0x13
Code: 4c 8b 7f 30 bb f2 ff ff ff 4d 85 ff 0f 84 a2 00 00 00 48 c7 c7 20 b3 43 82 e8 c4 e2 b6 00 49 8b 5d 30 48 85 db 0f 84 27 01 00 00 <8b> 03 f0 ff 03 48 c7 c7 20 b3 43 82 e8 d6 e3 b6 00 4c 89 e7 ba
RIP [<ffffffff8115eb59>] sysfs_do_create_link+0x59/0x1c0
RSP <ffff880000107db0>
and:
kobject: 'drm': free name
device: 'ttm': device_add
BUG: unable to handle kernel paging request at 0000000100000001
IP: [<ffffffff8137b7ad>] strnlen+0xd/0x40
PGD 0
Oops: 0000 [#1] SMP
CPU 1
Pid: 1, comm: swapper/0 Not tainted 3.5.0-rc5-bisect #207
RIP: 0010:[<ffffffff8137b7ad>] [<ffffffff8137b7ad>] strnlen+0xd/0x40
RSP: 0018:ffff880000107c30 EFLAGS: 00010286
RAX: ffffffff8210a8fc RBX: 0000000000000000 RCX: fffffffffffffffe
RDX: 0000000100000001 RSI: ffffffffffffffff RDI: 0000000100000001
RBP: ffff880000107c30 R08: 000000000000ffff R09: 000000000000ffff
R10: ffff88000f0750f0 R11: ffffffff824384e0 R12: 0000000100000001
R13: 0000000000000000 R14: 000000000000ffff R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff88000df00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
CR2: 0000000100000001 CR3: 0000000002411000 CR4: 00000000000006a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Process swapper/0 (pid: 1, threadinfo ffff880000106000, task ffff880000100000)
Stack:
ffff880000107c70 ffffffff8137cc3e ffffffff82ff88a0 0000000000000000
0000000000000000 ffff880000107d08 ffffffff8222f3dc ffffffff8222f3dc
ffff880000107cf0 ffffffff8137d719 0000000000000007 0000000000000006
Call Trace:
[<ffffffff8137cc3e>] string.isra.4+0x3e/0xd0
[<ffffffff8137d719>] vsnprintf+0x219/0x5e0
[<ffffffff81381468>] kvasprintf+0x48/0x90
[<ffffffff81374fa1>] kobject_set_name_vargs+0x21/0x60
[<ffffffff81375394>] kobject_add+0x54/0xc0
[<ffffffff81cb9093>] get_device_parent.isra.11+0x142/0x18f
[<ffffffff815801b8>] device_add+0x138/0x610
[<ffffffff8255aae2>] ? drm_core_init+0xca/0xca
[<ffffffff81589d09>] ? device_pm_init+0x69/0x90
[<ffffffff8255aae2>] ? drm_core_init+0xca/0xca
[<ffffffff815806a9>] device_register+0x19/0x20
[<ffffffff8147d507>] drm_class_device_register+0x17/0x20
[<ffffffff8255ab19>] ttm_init+0x37/0x62
[<ffffffff8252ed56>] do_one_initcall+0x7a/0x139
[<ffffffff8252ef18>] kernel_init+0x103/0x187
[<ffffffff8252e614>] ? do_early_param+0x8c/0x8c
[<ffffffff81ccf334>] kernel_thread_helper+0x4/0x10
[<ffffffff81ccd8b0>] ? retint_restore_args+0x13/0x13
[<ffffffff8252ee15>] ? do_one_initcall+0x139/0x139
[<ffffffff81ccf330>] ? gs_change+0x13/0x13
Code: c0 01 80 38 00 75 f7 48 29 f8 5d c3 31 c0 5d c3 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 55 48 85 f6 48 8d 4e ff 48 89 e5 74 2a <80> 3f 00 74 25 48 89 f8 31 d2 eb 10 0f 1f 80 00 00 00 00 48 83
RIP [<ffffffff8137b7ad>] strnlen+0xd/0x40
RSP <ffff880000107c30>
CR2: 0000000100000001
Thanks,
Fengguang
next prev parent reply other threads:[~2012-07-07 15:31 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-07-06 14:46 general protection fault on ttm_init() Fengguang Wu
2012-07-06 14:48 ` Fengguang Wu
2012-07-06 16:49 ` Dave Airlie
2012-07-06 16:49 ` Dave Airlie
2012-07-06 17:09 ` Dave Airlie
2012-07-06 17:09 ` Dave Airlie
2012-07-07 2:08 ` Fengguang Wu
2012-07-07 15:31 ` Fengguang Wu [this message]
2012-07-11 4:41 ` Fengguang Wu
2012-07-11 4:41 ` Fengguang Wu
2012-07-14 3:33 ` Dave Airlie
2012-07-14 5:19 ` Fengguang Wu
2012-07-14 5:19 ` Fengguang Wu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120707153142.GA24787@localhost \
--to=fengguang.wu@intel.com \
--cc=airlied@gmail.com \
--cc=airlied@redhat.com \
--cc=dri-devel@lists.freedesktop.org \
--cc=linux-kernel@vger.kernel.org \
--cc=thellstrom@vmware.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.