migration: Check for ID length
commit581f08bac22bdd5e081ae07f68071a0fc3c5c2c7
authorDr. David Alan Gilbert <dgilbert@redhat.com>
Thu, 2 Feb 2017 12:59:55 +0000 (2 12:59 +0000)
committerJuan Quintela <quintela@redhat.com>
Mon, 6 Feb 2017 12:36:49 +0000 (6 13:36 +0100)
treed8d094240391437df6994e6c49938c2a2cbd018f
parentbc5c4f21966977c4ff00ae77979b95a2b39142a3
migration: Check for ID length

The qdev id of a device can be huge if it's on the end of a chain
of bridges; in reality such chains shouldn't occur but they can
be made to by chaining PCIe bridges together.

The migration format has a number of 256 character long format
limits; check we don't hit them (we already use pstrcat/cpy but
that just protects us from buffer overruns, we fairly quickly
hit an assert).

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Message-Id: <20170202125956.21942-3-dgilbert@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
include/migration/vmstate.h
migration/savevm.c