On Tue, Dec 18, 2018 at 12:57 PM Frank Rowand <[email protected]> wrote: > > On 12/17/18 2:52 AM, Michael Ellerman wrote: > > Hi Frank, > > > > [email protected] writes: > >> From: Frank Rowand <[email protected]> > >> > >> Non-overlay dynamic devicetree node removal may leave the node in > >> the phandle cache. Subsequent calls to of_find_node_by_phandle() > >> will incorrectly find the stale entry. Remove the node from the > >> cache. > >> > >> Add paranoia checks in of_find_node_by_phandle() as a second level > >> of defense (do not return cached node if detached, do not add node > >> to cache if detached). > >> > >> Reported-by: Michael Bringmann <[email protected]> > >> Signed-off-by: Frank Rowand <[email protected]> > >> --- > > > > Similarly here can we add: > > > > Fixes: 0b3ce78e90fc ("of: cache phandle nodes to reduce cost of > > of_find_node_by_phandle()") > > Yes, thanks. > > > > Cc: [email protected] # v4.17+ > > Nope, 0b3ce78e90fc does not belong in stable (it is a feature, not a bug > fix). So the bug will not be in stable.
0b3ce78e90fc landed in v4.17, so Michael's line above is correct. Annotating it with 4.17 only saves Greg from trying and then emailing us to backport this patch as it wouldn't apply. Rob
