Am 25.03.2015 um 11:15 schrieb Greg Kroah-Hartman:
On Wed, Mar 25, 2015 at 10:23:27AM +0100, Alexander Holler wrote:
Am 25.03.2015 um 09:33 schrieb Greg Kroah-Hartman:
Is there a specific patch that is in Linus's tree that fixes this issue
that I should be applying to the stable tree?
No specific one. The changes of this patch were discarded by other patches
in Linus tree which fixed other problems of gadgetfs too.
Besides that the solution for this one specific patch is a one-liner, I'll
give a short overview:
- gadgetfs is already unusable since 3.16 (even with this patch) because
(p)read/(p)write doesn't work (fixed with 4.0)
- the problem this patch fixes is unlikely to be hit because glibc doesn't
use the Linux aio-syscall, but pread/pwrite, which means someone has to use
a special lib and not aio(7) to end up at the syscall the patch in question
fixes.
- there aren't that many users of gadgetfs
No idea if you want to apply or backport the whole series found in Al Viros
vfs.git/gadgetfs.
As this has been broken since 3.16, and no one has taken the time to fix
it since then, it's not really an issue here, people can just use 4.0 if
they want it.
Just a hint I think which should be kept in mind: Debian still uses
something below 3.16, which very likely is the reason why nobody has hit
(and examined) these bugs before.
Regards,
Alexander Holler
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