From: Russell King <rmk+lkml@arm.linux.org.uk>
To: James Bottomley <James.Bottomley@SteelEye.com>
Cc: Linus Torvalds <torvalds@osdl.org>,
Erik Mouw <erik@harddisk-recovery.com>,
Or Gerlitz <or.gerlitz@gmail.com>,
linux-scsi@vger.kernel.org, axboe@suse.de,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [BUG 2.6.17-git] kmem_cache_create: duplicate cache scsi_cmd_cache
Date: Fri, 12 May 2006 21:37:50 +0100 [thread overview]
Message-ID: <20060512203749.GB17120@flint.arm.linux.org.uk> (raw)
In-Reply-To: <1147460325.3769.46.camel@mulgrave.il.steeleye.com>
On Fri, May 12, 2006 at 01:58:45PM -0500, James Bottomley wrote:
> I suggest simply reversing this patch at the moment. If Russell and
> Jens can tell me what they're trying to do I'll see if there's another
> way to do it.
When a MMC card is pulled, we remove the MMC device structure (which
is what the driverfs_dev points at.) At this point, the MMC layer
*totally* forgets about the MMC device and deletes it.
Unfortunately, an uncounted reference is kept while the partition is
mounted by the gendisk layer, which when the partition is unmounted
via hotplug causes another hotplug event to be generated with respect
to this freed MMC device structure, and hence you get an oops.
Since the MMC layer has lost all knowledge of the device, the only
possible solution is as given in that patch.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
next prev parent reply other threads:[~2006-05-12 20:37 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-11 15:14 [BUG 2.6.17-git] kmem_cache_create: duplicate cache scsi_cmd_cache Erik Mouw
2006-05-12 4:53 ` Or Gerlitz
2006-05-12 17:16 ` Erik Mouw
2006-05-12 17:27 ` Andrew Vasquez
2006-05-12 20:18 ` Erik Mouw
2006-05-12 17:36 ` Linus Torvalds
2006-05-12 17:47 ` James Bottomley
2006-05-12 18:58 ` James Bottomley
2006-05-12 19:09 ` Linus Torvalds
2006-05-12 20:38 ` Russell King
2006-05-12 20:50 ` Linus Torvalds
2006-05-12 20:58 ` Russell King
2006-05-12 21:27 ` Linus Torvalds
2006-05-12 21:46 ` Linus Torvalds
2006-05-12 21:51 ` Russell King
2006-05-12 22:15 ` Linus Torvalds
2006-05-12 22:37 ` Linus Torvalds
2006-05-12 23:57 ` Greg KH
2006-05-14 16:01 ` Russell King
2006-05-12 21:18 ` Greg KH
2006-05-12 21:32 ` Linus Torvalds
2006-05-12 22:45 ` Greg KH
2006-05-12 20:52 ` Greg KH
2006-05-12 21:03 ` Russell King
2006-05-12 21:34 ` Greg KH
2006-05-12 21:39 ` Al Viro
2006-05-12 20:30 ` Erik Mouw
2006-05-12 20:37 ` Russell King [this message]
2006-05-12 20:21 ` Erik Mouw
2006-05-12 20:34 ` Russell King
2006-05-12 21:43 ` Al Viro
2006-05-12 21:55 ` Russell King
2006-05-12 22:08 ` Al Viro
2006-05-12 22:22 ` Linus Torvalds
2006-05-12 22:28 ` Al Viro
2006-05-12 22:48 ` Al Viro
2006-05-12 22:51 ` Al Viro
2006-05-12 23:04 ` Linus Torvalds
2006-05-12 23:21 ` Al Viro
2006-05-12 23:37 ` Al Viro
2006-05-12 23:50 ` Linus Torvalds
2006-05-13 0:20 ` Al Viro
2006-05-24 14:07 ` Erik Mouw
2006-05-13 0:08 ` Greg KH
2006-05-12 22:37 ` Russell King
2006-05-12 21:58 ` Al Viro
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