lkml.org 
[lkml]   [2020]   [May]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Date
SubjectRe: [PATCH] kobject: Make sure the parent does not get released before its children
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>

\
 
 \ /
  Last update: 2020-05-13 23:32    [W:0.133 / U:0.088 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site