diff options
| author | Milan Broz <mbroz@redhat.com> | 2009-06-22 10:12:11 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-07-02 16:50:40 -0700 |
| commit | 7dce9502a4396efca6d4c962f083440900ea9951 (patch) | |
| tree | 26accee91a3a96980a722f3d26ec7ceae23098e1 | |
| parent | cb23f287db2d8966bcf97c57cc5f4f98cc57b51b (diff) | |
dm: sysfs skip output when device is being destroyed
commit 4d89b7b4e4726893453d0fb4ddbb5b3e16353994 upstream.
Do not process sysfs attributes when device is being destroyed.
Otherwise code can cause
BUG_ON(test_bit(DMF_FREEING, &md->flags));
in dm_put() call.
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/md/dm.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/dm.c b/drivers/md/dm.c index 424f7b048c30..add49c19050e 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1780,6 +1780,10 @@ struct mapped_device *dm_get_from_kobject(struct kobject *kobj) if (&md->kobj != kobj) return NULL; + if (test_bit(DMF_FREEING, &md->flags) || + test_bit(DMF_DELETING, &md->flags)) + return NULL; + dm_get(md); return md; } |