On Fri, May 12, 2006 at 10:43:54PM +0100, Al Viro wrote:
> On Fri, May 12, 2006 at 09:34:16PM +0100, Russell King wrote:
> > On Fri, May 12, 2006 at 10:36:57AM -0700, Linus Torvalds wrote:
> > > Yes. We could just revert that commit, but it seems correct, and I'd
> > > really like for somebody to understand _why_ that commit matters at all. I
> > > certainly don't see the overlap here..
> >
> > Reverting the commit breaks MMC/SD in a very real way, and the fix
> > is plainly correct and is actually the only possible fix that can be
> > applied.
>
> Bullshit. Could you explain what generic code dereferences ->driverfs_dev
> after del_gendisk()? If you see such beast, please tell; _that_ is the
> real bug.
Al, I think you're going to eat your own bull on this one.
You'll find that in the reply I've just sent to Linus - two oopen
reported by two different people since the mount/umount hotplug
events got re-merged.
The problem case is:
- insert card
- mount filesystem
- remove card
- umount filesystem <bang, oops>
The generic code is block_uevent(), which is called at umount time
_after_ the gendisk has been deleted (which happens when the card has
been removed.)
Basically, you can't umount a destroyed block device without oopsing.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
