Message-ID: <4C358076.1040302@gmail.com>
Date:	Thu, 08 Jul 2010 00:38:30 -0700
From:	"Justin P. Mattock" <justinmattock@...il.com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	airlied@...ux.ie, dri-devel@...ts.freedesktop.org,
	venki@...gle.com, hpa@...ux.intel.com,
	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: [bisected]X:2252 conflicting memory types 40000000-48000000 uncached-minus<->write-combining

On 07/07/2010 11:44 PM, Ingo Molnar wrote:
>
> * Justin P. Mattock<justinmattock@...il.com>  wrote:
>
>> On 07/02/10 13:04, Justin P. Mattock wrote:
>>> this is new(below) has anybody reported/bisected hit this yet
>>> (if not I'll bisect it)
>>>
>>> [drm] Num pipes: 1
>>> [   29.742432] [drm] writeback test succeeded in 1 usecs
>>> [   30.089717] X:2252 conflicting memory types 40000000-48000000
>>> uncached-minus<->write-combining
>>> [   30.089721] reserve_memtype failed 0x40000000-0x48000000, track
>>> uncached-minus, req uncached-minus
>>> [   30.123517] [drm] Num pipes: 1
>>> [   30.351017] X:2252 freeing invalid memtype 40000000-48000000
>>> [   30.354255] CPU 0
>>> [   30.354255] Modules linked in: radeon ttm drm_kms_helper drm
>>> sco xcbc bnep rmd160 sha512_generic xt_tcpudp ipt_LOG iptable_nat
>>> nf_nat xt_state nf_conntrack_ftp nf_conntrack_ipv4 nf_conntrack
>>> nf_defrag_ipv4 iptable_filter ip_tables x_tables firewire_ohci
>>> firewire_core video battery ath9k ac ath9k_common joydev sky2
>>> ath9k_hw ohci1394 ath thermal evdev button i2c_i801 hid_magicmouse
>>> aes_x86_64 lzo lzo_compress zlib ipcomp xfrm_ipcomp crypto_null
>>> sha256_generic cbc des_generic cast5 blowfish serpent camellia
>>> twofish twofish_common ctr ah4 esp4 authenc raw1394 ieee1394
>>> uhci_hcd ehci_hcd hci_uart rfcomm btusb hidp l2cap bluetooth
>>> coretemp acpi_cpufreq processor mperf appletouch applesmc
>>> uvcvideo[   30.354255]
>>> [   30.354255] Pid: 2252, comm: X Not tainted
>>> 2.6.35-rc3-00397-g123f94f #3 Mac-F42187C8/MacBookPro2,2
>>> [   30.354255] RIP: 0010:[<ffffffffa035811b>]
>>> [<ffffffffa035811b>] radeon_read_ring_rptr+0x2b/0x2f [radeon]
>>> [   30.354255] RSP: 0018:ffff8800360dfc80  EFLAGS: 00010202
>>> [   30.354255] RAX: ffff88003e0085d8 RBX: ffff8800385e8848 RCX:
>>> ffffc90000cf8000
>>> [   30.354255] RDX: 0000000000000028 RSI: 6b6b6b6b6b6b6b6b RDI:
>>> ffff8800385e8848
>>> [   30.354255] RBP: ffff8800360dfc80 R08: ffff8800385e8a28 R09:
>>> 0000000000000010
>>> [   30.354255] R10: ffffffffffffffff R11: ffffea0000930af0 R12:
>>> 0000000000000010
>>> [   30.354255] R13: ffff8800385e8000 R14: ffff8800385e89c8 R15:
>>> ffff8800385e8178
>>> [   30.354255] FS:  00007f0aaa823840(0000)
>>> GS:ffff880001a00000(0000) knlGS:0000000000000000
>>> [   30.354255] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>>> [   30.354255] CR2: 00007f0a9ad67118 CR3: 000000000166d000 CR4:
>>> 00000000000006f0
>>> [   30.354255] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
>>> 0000000000000000
>>> [   30.354255] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
>>> 0000000000000400
>>> [   30.354255] Process X (pid: 2252, threadinfo ffff8800360de000,
>>> task ffff880033dc5c40)
>>> [   30.354255]  ffff8800360dfc90 ffffffffa0358130 ffff8800360dfca8
>>> ffffffffa035881c
>>> [   30.354255]<0>  ffff8800385e8848 ffff8800360dfcc8
>>> ffffffffa0359ac7 0000000000000000
>>> [   30.354255]<0>  ffff8800385e8848 ffff8800360dfce8
>>> ffffffffa035c961 ffff8800385e8848
>>> [   30.354255]  [<ffffffffa0358130>]
>>> radeon_get_ring_head+0x11/0x3c [radeon]
>>> [   30.354255]  [<ffffffffa035881c>] radeon_commit_ring+0x48/0x97
>>> [radeon]
>>> [   30.354255]  [<ffffffffa0359ac7>] radeon_do_cp_idle+0x140/0x14d
>>> [radeon]
>>> [   30.354255]  [<ffffffffa035c961>]
>>> radeon_apply_surface_regs+0x22/0x138 [radeon]
>>> [   30.354255]  [<ffffffffa035cb4f>] free_surface+0xd8/0xee [radeon]
>>> [   30.354255]  [<ffffffffa0365036>]
>>> radeon_driver_lastclose+0x3c/0x56 [radeon]
>>> [   30.354255]  [<ffffffffa031440b>] drm_lastclose+0x44/0x2ad [drm]
>>> [   30.354255]  [<ffffffffa0314eda>] drm_release+0x656/0x6a3 [drm]
>>> [   30.354255]  [<ffffffff8105abaf>] put_files_struct+0x65/0xb3
>>> [   30.354255]  [<ffffffff8105ac43>] exit_files+0x46/0x4e
>>> [   30.354255]  [<ffffffff8105c2e6>] do_exit+0x214/0x69f
>>> [   30.354255]  [<ffffffff810ebc2e>] ? fput+0x1e2/0x1f1
>>> [   30.354255]  [<ffffffff8105c7e3>] do_group_exit+0x72/0x9a
>>> [   30.354255]  [<ffffffff8105c81d>] sys_exit_group+0x12/0x16
>>> [   30.354255]  [<ffffffff81026442>] system_call_fastpath+0x16/0x1b
>>> [   30.354255]  RSP<ffff8800360dfc80>
>>> [   31.312879] ---[ end trace 9a7b92300d4121f6 ]---
>>> [   30.354255]  [<ffffffff810ebb6e>] fput+0x122/0x1f1
>>> [   30.354255]  [<ffffffff810e9181>] filp_close+0x63/0x6d
>>>
>>> Justin P. Mattock
>>
>> o.k. finished bisecting.. the results point to this: 6a4f3b523 doing
>> a git revert gets me to startx without crashing and burning.
>> the problem code is this:
>> new->subtree_max_end = new->end;
>>
>> which sends me to: (if im reading correctly)
>> if (match->type != found_type&&  newtype == NULL)
>>          goto failure;
>>
>> so how/what might be happening here?!
>
> Could you please check latest upstream, which has this fix:
>
>    b945d6b: rbtree: Undo augmented trees performance damage and regression
>
> Does it fix your X too?
>
> Thanks,
>
> 	Ingo
>


yep.. just pulled, everything looks good...

Justin P. Mattock
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