Messages in this thread | | | Subject | Re: [PATCH] kobject: Make sure the parent does not get released before its children | From | Randy Dunlap <> | Date | Wed, 13 May 2020 16:14:51 -0700 |
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On 5/13/20 2:30 PM, Brendan Higgins wrote: > On Wed, May 13, 2020 at 8:18 AM Heikki Krogerus > <heikki.krogerus@linux.intel.com> wrote: >> >> In the function kobject_cleanup(), kobject_del(kobj) is >> called before the kobj->release(). That makes it possible to >> release the parent of the kobject before the kobject itself. >> >> To fix that, adding function __kboject_del() that does >> everything that kobject_del() does except release the parent >> reference. kobject_cleanup() then calls __kobject_del() >> instead of kobject_del(), and separately decrements the >> reference count of the parent kobject after kobj->release() >> has been called. >> >> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> >> Reported-by: kernel test robot <rong.a.chen@intel.com> >> Fixes: 7589238a8cf3 ("Revert "software node: Simplify software_node_release() function"") >> Cc: Brendan Higgins <brendanhiggins@google.com> >> Cc: Randy Dunlap <rdunlap@infradead.org> >> Suggested-by: "Rafael J. Wysocki" <rafael@kernel.org> >> Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com> > > Reviewed-by: Brendan Higgins <brendanhiggins@google.com> > Tested-by: Brendan Higgins <brendanhiggins@google.com> >
Acked-by: Randy Dunlap <rdunlap@infradead.org> Tested-by: Randy Dunlap <rdunlap@infradead.org>
Thanks. -- ~Randy
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