Re: [Bug 365] New: Raid-0 causes kernel BUG at drivers/block/ll_rw_blk.c:1996

From: Jens Axboe (axboe@suse.de)
Date: Sun Feb 16 2003 - 04:54:16 EST


On Sat, Feb 15 2003, Martin J. Bligh wrote:
>
> http://bugme.osdl.org/show_bug.cgi?id=365
>
> Summary: Raid-0 causes kernel BUG at
> drivers/block/ll_rw_blk.c:1996
> Kernel Version: 2.5.61
> Status: NEW
> Severity: blocking
> Owner: bugme-janitors@lists.osdl.org
> Submitter: harisri@bigpond.com
>
>
> Distribution: RH 8.0
> Hardware Environment: Athlon, AMD 761 (AMD North Bridge, VIA South bridge),
> IDE Hard drives
> Software Environment: Gnu C 3.2, Linux C Library 2.2.93,
> raidtools-1.00.2-3.3 Problem Description: 2.5.61 oops while trying to
> activate raid-0 volumes. Please refer the thread
> http://marc.theaimsgroup.com/?l=linux-kernel&m=103830814911111&w=2 for more
> information from Neil Brown, Jens Axboe and Andrew Morton.
>
> Steps to reproduce: Try to enable raid-0 volumes under 2.5.49 to 2.5.61

Known bug, raid0 doesn't accept a full PAGE_CACHE_SIZE page at any
offset, and the api relies on that. Fix is probably to add the sub-page
split stuff.

-- 
Jens Axboe

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