tree 214d463d2ca567c8969a70b1255edc1c15b61947
parent 0c79ce0b75304fbbe42282a7d40af4367e31efc6
author Benjamin Marzinski <bmarzins@redhat.com> 1480915598 -0600
committer Mike Snitzer <snitzer@redhat.com> 1481224395 -0500

dm space map: always set ev if sm_ll_mutate() succeeds

If no block was allocated or freed, sm_ll_mutate() wasn't setting
*ev, leaving the variable unitialized. sm_ll_insert(),
sm_disk_inc_block(), and sm_disk_new_block() all check ev to see
if there was an allocation event in sm_ll_mutate(), possibly
reading unitialized data.

If no allocation event occured, sm_ll_mutate() should set *ev
to SM_NONE.

Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>