linux-kernel - [PATCH 0/2] udf: Fix corrupt on-disk integrity descriptor following sync()

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Date:   Fri,  8 Feb 2019 11:34:53 -0600
From:   Steve Magnani <steve.magnani@...idescorp.com>
To:     jack@...e.com
Cc:     linux-kernel@...r.kernel.org
Subject: [PATCH 0/2] udf: Fix corrupt on-disk integrity descriptor following sync()

In cases where the next unique ID or file/directory count of the
in-core Logical Volume Integrity Descriptor have been updated,
a sync() causes a (corrupt) LVID with a stale CRC to be written to disk.

Ordinarily, this is corrected by an update of the on-disk LVID that occurs
when the filesystem is unmounted. However, if power is lost or the
filesystem resides on a device that is surprise-removed, the corrupt LVID
remains and can complicate later remounting or fsck/chkdsk.