[lkml]   [2018]   [Sep]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: KASAN: use-after-free Read in fuse_dev_do_read
On Mon, Sep 24, 2018 at 2:06 PM, Kirill Tkhai <> wrote:

> Fix from my previous message makes the use-after-free does not reproduce
> with the reproducer in my setup.


> I can prepare the patch, but before this some comments from Miklos would
> be welcome.
> Miklos, what you think about this?

I like the patch.

We could optimize away the get/put by moving the set_bit/test_bit part
inside the fpq->lock-ed region and only get the refcount for the
(unlikely) interrupted case. OTOH it's probably not worth the extra
complexity, so let's stay with this simpler fix.


 \ /
  Last update: 2018-09-24 16:29    [W:0.056 / U:1.644 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site