[PATCH v6.6] erofs: fix NULL dereference of dif->bdev_handle in fscache mode

[Greg KH]

On Thu, Jun 27, 2024 at 08:51:37PM +0800, Gao Xiang wrote:
> 
> 
> On 2024/6/27 20:36, Gao Xiang wrote:
> > Hi Greg,
> > 
> > On 2024/6/27 19:16, Greg KH wrote:
> 
> ...
> 
> > > 
> > > So what specifically should we do here?
> > 
> > Thanks for the reply..  Honestly I'd like to revert
> > 
> > block: Provide bdev_open_* functions
> > erofs: Convert to use bdev_open_by_path()
> > erofs: fix handling kern_mount() failure
> > 
> > Not quite sure if they can be cleanly reverted, but
> > since the upstream doen't have 'bdev_handle' anymore,
> > I will resend a proper backport for
> > "erofs: fix handling kern_mount() failure".
> 
> Sigh, I just tried and it seems it causes more
> conflicts due to my revert.  It seems another churn..
> 
> Anyway, on 6.6 LTS only the erofs one uses the
> obsolete `struct bdev_handle`, but I think at least
> it doesn't cause some serious issue.
> 
> Hi Greg,
> 
> Could you just pick up Hongbo's backport to resolve
> the NULL dereference issue?

Sure, is that the one earlier in this thread?

And if so, what is the git commit id of it in Linus's tree?

thanks,

greg k-h