migration/ram: fix use after free of local_err
local_err is used again in migration_bitmap_sync_precopy() after
precopy_notify(), so we must zero it. Otherwise try to set
non-NULL local_err will crash.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200324153630.11882-6-vsementsov@virtuozzo.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
(cherry picked from commit b4a1733c5e
)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
stable-4.2
parent
09397e9657
commit
1c8d9fb334
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@ -1906,6 +1906,7 @@ static void migration_bitmap_sync_precopy(RAMState *rs)
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*/
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if (precopy_notify(PRECOPY_NOTIFY_BEFORE_BITMAP_SYNC, &local_err)) {
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error_report_err(local_err);
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local_err = NULL;
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}
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migration_bitmap_sync(rs);
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