On Wed, Apr 20, 2016 at 03:43:13PM -0400, Tejun Heo wrote: > On Sun, Apr 17, 2016 at 03:04:31PM -0500, serge.hallyn@xxxxxxxxxx wrote: > > From: Serge Hallyn <serge.hallyn@xxxxxxxxxx> > > > > We've calculated @len to be the bytes we need for '/..' entries from > > @kn_from to the common ancestor, and calculated @nlen to be the extra > > bytes we need to get from the common ancestor to @kn_to. We use them > > as such at the end. But in the loop copying the actual entries, we > > overwrite @nlen. Use a temporary variable for that instead. > > > > Without this, the return length, when the buffer is large enough, is > > wrong. (When the buffer is NULL or too small, the returned value is > > correct. The buffer contents are also correct.) > > > > Interestingly, no callers of this function are affected by this as of > > yet. However the upcoming cgroup_show_path() will be. > > > > Signed-off-by: Serge Hallyn <serge.hallyn@xxxxxxxxxx> > > Acked-by: Tejun Heo <tj@xxxxxxxxxx> > > Greg, can you please pick this one up for v4.6? Looks like Greg missed this one. Greg, I'll route this through cgroup/for-4.6-fixes. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-api" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
