linux-kernel - Re: [bisected]X:2252 conflicting memory types 40000000-48000000 uncached-minus<->write-combining

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Date:	Thu, 8 Jul 2010 08:44:48 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	"Justin P. Mattock" <justinmattock@...il.com>
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


* 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
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