Re: NULL pointer dereference in 3.14 cephfs kernel client

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On Tue, Jan 06, 2015 at 06:32:55AM -0800, Sage Weil wrote:
> On Tue, 6 Jan 2015, Markus Blank-Burian wrote:
> > Hi,
> > 
> > as discussed in http://tracker.ceph.com/issues/10450 the 3.14 kernel
> > sometimes hits a NULL pointer dereference if the MDS server crashes.
> > The corresponding fix is in commit
> > 00bd8edb861eb41d274938cfc0338999d9c593a3 which only adds a list_empty
> > check. The patch applies cleanly with a -1 offset to the 3.14 tree and
> > is included in mainline kernel since 3.15.
> > Can this patch be included in one of the next stable releases?
> 
> Yeah, definitely.  We haven't been aggressive about sending cephfs fixes 
> to stable but will start doing so soon.  This particular one is is safe to 
> backport.
> 
> Greg, do you need a patch sent to stable@ or is the sha1 above enough?

The sha1 is enough, I'll queue it up soon when I get caught up on my
stable patch backlog.

thanks,

greg k-h
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