diff options
| author |   Milan Broz <mbroz@redhat.com> | 2009-06-22 10:12:11 +0100 |
|---|---|---|
| committer |   Alasdair G Kergon <agk@redhat.com> | 2009-06-22 10:12:11 +0100 |
| commit | 4d89b7b4e4726893453d0fb4ddbb5b3e16353994 (patch) | |
| tree | f0775811ee4942eadd555d5ddcdbb5ff313290bb /drivers/md/dm.c | |
| parent | dm mpath: validate hw_handler argument count (diff) | |
| download | linux-dev-4d89b7b4e4726893453d0fb4ddbb5b3e16353994.tar.xz linux-dev-4d89b7b4e4726893453d0fb4ddbb5b3e16353994.zip | |
dm: sysfs skip output when device is being destroyed
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.
Cc: stable@kernel.org
Signed-off-by: Milan Broz <mbroz@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Diffstat (limited to 'drivers/md/dm.c')
| -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 48db308fae67..f1db689667ea 100644 --- a/drivers/md/dm.c +++ b/drivers/md/dm.c @@ -1777,6 +1777,10 @@ 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; } |