diff options
author | NeilBrown <neilb@suse.de> | 2008-02-06 01:39:56 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-06 10:41:19 -0800 |
commit | 177a99b23ef9878c0cedcc7273108eba8a6e9472 (patch) | |
tree | 616dd718e94a1e5e8ca536114d5fb91fa780bbc8 /net/9p | |
parent | a17184a911195c274104df98a79bec10f57e735d (diff) |
md: fix use-after-free bug when dropping an rdev from an md array
Due to possible deadlock issues we need to use a schedule work to kobject_del
an 'rdev' object from a different thread.
A recent change means that kobject_add no longer gets a refernce, and
kobject_del doesn't put a reference. Consequently, we need to explicitly hold
a reference to ensure that the last reference isn't dropped before the
scheduled work get a chance to call kobject_del.
Also, rename delayed_delete to md_delayed_delete to that it is more obvious in
a stack trace which code is to blame.
Cc: Al Viro <viro@ZenIV.linux.org.uk>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'net/9p')
0 files changed, 0 insertions, 0 deletions