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mtd: blkdevs: fix crash related to sysfs attributes.

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Remove the attributes group before disk to avoid use after free

Signed-off-by: Maxim Levitsky <maximlevitsky@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
This commit is contained in:
Maxim Levitsky 2010-07-28 18:53:16 +03:00 • committed by David Woodhouse
parent ef41e1bb11
commit dba76c033f
1 changed files with 4 additions and 3 deletions
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7
drivers/mtd/mtd_blkdevs.c
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@ -410,13 +410,14 @@ int del_mtd_blktrans_dev(struct mtd_blktrans_dev *old)
BUG(); BUG();
} }
/* Stop new requests to arrive */
del_gendisk(old->disk);
if (old->disk_attributes) if (old->disk_attributes)
sysfs_remove_group(&disk_to_dev(old->disk)->kobj, sysfs_remove_group(&disk_to_dev(old->disk)->kobj,
old->disk_attributes); old->disk_attributes);
/* Stop new requests to arrive */
del_gendisk(old->disk);
/* Stop the thread */ /* Stop the thread */
kthread_stop(old->thread); kthread_stop(old->thread);