On Mon, Apr 10, 2017 at 12:36:26PM -0700, Liu Bo wrote: > KASAN reports that there is a use-after-free case of bio in btrfs_map_bio. > > If we need to submit IOs to several disks at a time, the original bio > would get cloned and mapped to the destination disk, but we really should > use the original bio instead of a cloned bio to do the sanity check > because cloned bios are likely to be freed by its endio. > > Reported-by: Diego <[email protected]> > Signed-off-by: Liu Bo <[email protected]>
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