linux-kernel - Re: [BUG] unable to handle kernel paging request in next-20080516

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Message-Id: <20080518021423.3dcf0ddd.akpm@linux-foundation.org>
Date:	Sun, 18 May 2008 02:14:23 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Sitsofe Wheeler <sitsofe@...oo.com>
Cc:	linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	Greg KH <greg@...ah.com>
Subject: Re: [BUG] unable to handle kernel paging request in next-20080516


(cc's added)

On Sat, 17 May 2008 12:50:24 +0000 (UTC) Sitsofe Wheeler <sitsofe@...oo.com> wrote:

> Sometimes when booting next-20080516 on Ubuntu Gutsy an oops then a panic 
> will occur. At first I thought it might be provoked by vga=0x164 but this 
> does not appear to be the case and the issue is seemingly random. I've 
> hand transcribed the oops so there may be errors in it but hopefully it 
> will still help:
> 
> BUG: unable to handle kernel paging request at e6f17fac
> IP: [<c02604d6>] scsi_bus_uevent+0x1/0x17
> *pde = 2714b163 *pte = 26f17160
> Oops: 0000 [#1] DEBUG_PAGEALLOC
> last sysfs file:
> 
> Pid:  1, comm: swapper Not tainted (2.6.26-rc2-next-20080516skw #30)
> EIP: 0060:[<c02604d6>] EFLAGS: 00010282 CPU: 0
> EIP is at scsi_bus_uevent+0x1/0x17
> EAX: e6f18014 EBX: e6f18014 ECX: c02604d5 EDX: e7173000
> ESI: e7173000 EDI: e7173000 EBP: e7851ca0 ESP: e7851c90
>  DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068
> Process swapper (pid: 1, ti=e7850000 task=e7848000 task.ti=e7850000)
> Stack: e7851ca0 c0237f3a c0237eac 00000000 e7851ce4 c01da36d 00000000 e6f180fc
>        e7835000 c03ebf42 e7163240 c03af631 c040b050 c040b598 00000000 e6f18014
>        00000000 e7851cdc 00000000 e6f18014 00000000 e7851cec c01da52a e7851d2c
> Call Trace:
>  [<c0237f3a>] ? dev_uevent+0x8e/0xca
>  [<c0237eac>] ? dev_uevent+0x0/0xca
>  [<c01da36d>] ? kobject_uevent_env+0x14c/0x2ff
>  [<c01da52a>] ? kobject_uevent_env+0xa/0xc
>  [<c023884b>] ? device_add+0x2bf/0x3f0
>  [<c0321905>] ? mutex_unlock+0x8/0xa
>  [<c02607b4>] ? scsi_sysfs_add_sdev+0x39/0x1d3
>  [<c025f037>] ? scsi_probe_and_add_lun+0x714/0x08
>  [<c025f9ef>] ? __scsi_add_device+0x85/0xab
>  [<c026a70c>] ? ata_scsi_scan_host+0x7f/0x15e
>  [<c0267ec8>] ? ata_host_register+0x1c8/0x1e5
>  [<c026ec75>] ? ata_pci_sff_activate_host+0x179/0x19f
>  [<c0270b61>] ? ata_sff_interupt+0x0/0x1d7
>  [<c026f076>] ? ata_pci_sff_init_one+0x97/0xe1
>  [<c027219c>] ? via_init_one+0x1da/0x1e3
>  [<c01e5670>] ? pci_device_probe+0x39/0x59
>  [<c023a0a1>] ? driver_probe_device+0x9f/0x119
>  [<c023a158>] ? __driver_attach+0x3d/0x5f
>  [<c023990a>] ? bus_for_each_dev+0x3e/0x60
>  [<c0239f39>] ? driver_attach+0x14/0x16
>  [<c023a11b>] ? __driver_attach+0x0/0x5f
>  [<c0239c9d>] ? bus_add_driver+0x99/0x1a0
>  [<c023a2d6>] ? driver_register+0x71/0xcd
>  [<c01e5852>] ? __pci_register_driver+0x53/0x81
>  [<c04205b1>] ? kernel_init+0x0/0xc4
>  [<c04378fc>] ? via_init+0x14/0x16
>  [<c0132800>] ? trace_softirqs_on+0x78/0x7e
>  [<c01dd90c>] ? trace_hardirqs_on_thunk+0xc/0x10
>  [<c0102c3a>] ? restore_nocheck_notrace+0x0/0xe
>  [<c04205b1>] ? kernel_init+0x0/0x1c4
>  [<c04205b1>] ? kernel_init+0x0/0x1c4
>  [<c010373f>] ? kernel_thread_helper+0x7/0x10
>  =======================
> 

I thought we'd already fixed this?
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