Hans de Goede 5e61aede47
uas: Do not use scsi_host_find_tag ...
Using scsi_host_find_tag with tags returned by the device is unsafe for
multiple reasons:
1) It returns tags->rqs[tag], which may be non NULL even when the cmnd is
not owned by us
2) It returns tags->rqs[tag], without holding any locks protecting it
3) It returns tags->rqs[tag], without doing any boundary checking
Instead keep our own list which maps tags -> inflight cmnds.
Signed-off-by: Hans de Goede <hdegoede@redhat.com >
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org >
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