linux-kernel - Re: [PATCH] SCSI: fix data corruption caused by ses v2

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Date:	Fri, 15 Feb 2008 10:44:50 -0800
From:	Yinghai Lu <Yinghai.Lu@....COM>
To:	James Bottomley <James.Bottomley@...senpartnership.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-scsi@...r.kernel.org, linux-ide@...r.kernel.org,
	kristen.c.accardi@...el.com, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH] SCSI: fix data corruption caused by ses v2

On Friday 15 February 2008 07:53:06 am James Bottomley wrote:
> On Wed, 2008-02-13 at 16:25 -0800, Yinghai Lu wrote:
> > one system: initrd get courrupted:
> > 
> > RAMDISK: Compressed image found at block 0
> > RAMDISK: incomplete write (-28 != 2048) 134217728
> > crc error
> > VFS: Mounted root (ext2 filesystem).
> > Freeing unused kernel memory: 388k freed
> > init_special_inode: bogus i_mode (177777)
> > Warning: unable to open an initial console.
> > init_special_inode: bogus i_mode (177777)
> > init_special_inode: bogus i_mode (177777)
> > Kernel panic - not syncing: No init found.  Try passing init= option to kernel.
> > 
> > bisected to
> > commit 9927c68864e9c39cc317b4f559309ba29e642168
> > Author: James Bottomley <James.Bottomley@...senPartnership.com>
> > Date:   Sun Feb 3 15:48:56 2008 -0600
> > 
> >     [SCSI] ses: add new Enclosure ULD
> > 
> > changes:
> > 1. change char to unsigned char to avoid type change later.
> > 2. preserve len for page1
> > 3. need to move desc_ptr even the entry is not enclosure_component_device/raid.
> >    so keep desc_ptr on right position
> > 4. record page7 len, and double check if desc_ptr out of boundary before touch.
> > 5. fix typo in subenclosure checking: should use hdr_buf instead.
> > 
> > Signed-off-by: Yinghai Lu <yinghai.lu@....com>
> 
> OK, I added this with a fixup to eliminate the spurious goto
> 

good
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