ACK: [PATCH 0/2] Fix fuse sync io races

[Brad Figg]

On Tue, Mar 22, 2016 at 08:51:57AM -0500, Seth Forshee wrote:
> BugLink: http://bugs.launchpad.net/bugs/1505948
> 
> Impact: Races in fuse's synchronous io handling can result in
> use-after-free bugs which are causing kernel crashes.
> 
> Fix: Two commits from fuse-next, one which simply caches the result of a
> test to avoid a use-after-free and another which adds reference counting
> to the fuse_io_priv struct to get rid of some convoluted rules for
> determining when this structure can be freed.
> 
> Test case: Tested on LP #1505948.
> 
> Note that these patches are only for wily and xenial, but the first
> patch fixes a bug introduced in 3.10. The problems have only been seen
> in 4.1 and later kernels, so it's likely the second patch that really
> fixes this bug and we can just wait for the first patch to make its way
> to older kernels via upstream stable.
> 
> Thanks,
> Seth
> 
> -- 
> kernel-team mailing list
> kernel-team at lists.ubuntu.com
> https://lists.ubuntu.com/mailman/listinfo/kernel-team


-- 
Brad Figg brad.figg at canonical.com http://www.canonical.com