* Apply "vfs: don't do RCU lookup of empty pathnames" to stable
@ 2018-02-15 19:11 Eric Biggers
2018-02-15 19:51 ` Greg Kroah-Hartman
0 siblings, 1 reply; 3+ messages in thread
From: Eric Biggers @ 2018-02-15 19:11 UTC (permalink / raw)
To: stable, Greg Kroah-Hartman
Cc: Linus Torvalds, Dmitry Vyukov, Vegard Nossum, Al Viro
Hi Greg, here's another one. When you have a chance can you please apply commit
c0eb027e5aef ("vfs: don't do RCU lookup of empty pathnames") to the stable
trees? I can reproduce the use-after-free on 4.4-stable and 4.9-stable, and it
is fixed by the patch. And I wasn't able to check 3.18 because KASAN isn't
available there, but I think the bug there as well. Thanks,
Eric
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: Apply "vfs: don't do RCU lookup of empty pathnames" to stable
2018-02-15 19:11 Apply "vfs: don't do RCU lookup of empty pathnames" to stable Eric Biggers
@ 2018-02-15 19:51 ` Greg Kroah-Hartman
2018-02-21 9:42 ` Greg Kroah-Hartman
0 siblings, 1 reply; 3+ messages in thread
From: Greg Kroah-Hartman @ 2018-02-15 19:51 UTC (permalink / raw)
To: Eric Biggers
Cc: stable, Linus Torvalds, Dmitry Vyukov, Vegard Nossum, Al Viro
On Thu, Feb 15, 2018 at 11:11:37AM -0800, Eric Biggers wrote:
> Hi Greg, here's another one. When you have a chance can you please apply commit
> c0eb027e5aef ("vfs: don't do RCU lookup of empty pathnames") to the stable
> trees? I can reproduce the use-after-free on 4.4-stable and 4.9-stable, and it
> is fixed by the patch. And I wasn't able to check 3.18 because KASAN isn't
> available there, but I think the bug there as well. Thanks,
Thanks for this, I'll queue it up for the next round of stable patches
after this one.
greg k-h
^ permalink raw reply [flat|nested] 3+ messages in thread* Re: Apply "vfs: don't do RCU lookup of empty pathnames" to stable
2018-02-15 19:51 ` Greg Kroah-Hartman
@ 2018-02-21 9:42 ` Greg Kroah-Hartman
0 siblings, 0 replies; 3+ messages in thread
From: Greg Kroah-Hartman @ 2018-02-21 9:42 UTC (permalink / raw)
To: Eric Biggers
Cc: stable, Linus Torvalds, Dmitry Vyukov, Vegard Nossum, Al Viro
On Thu, Feb 15, 2018 at 08:51:57PM +0100, Greg Kroah-Hartman wrote:
> On Thu, Feb 15, 2018 at 11:11:37AM -0800, Eric Biggers wrote:
> > Hi Greg, here's another one. When you have a chance can you please apply commit
> > c0eb027e5aef ("vfs: don't do RCU lookup of empty pathnames") to the stable
> > trees? I can reproduce the use-after-free on 4.4-stable and 4.9-stable, and it
> > is fixed by the patch. And I wasn't able to check 3.18 because KASAN isn't
> > available there, but I think the bug there as well. Thanks,
>
> Thanks for this, I'll queue it up for the next round of stable patches
> after this one.
It doesn't apply to 3.18.y due to some vfs changes not being there, so
I'm going to go drop the patch I just queued up there, sorry for that
noise. But now added to 4.4.y and 4.9.y.
thanks,
greg k-h
^ permalink raw reply [flat|nested] 3+ messages in thread
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2018-02-15 19:11 Apply "vfs: don't do RCU lookup of empty pathnames" to stable Eric Biggers
2018-02-15 19:51 ` Greg Kroah-Hartman
2018-02-21 9:42 ` Greg Kroah-Hartman
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