The path_latency prioriziter was assuming that prepare_directio_read()
always succeeds. However, it doesn't, and when it fails, the prioritizer
used buf without it pointing to alloced memory. Found by coverity.
Reviewed-by: Martin Wilck <mwilck@suse.com>
Signed-off-by: Benjamin Marzinski <bmarzins@redhat.com>
lg_maxavglatency = log(MAX_AVG_LATENCY) / lg_base;
lg_minavglatency = log(MIN_AVG_LATENCY) / lg_base;
- prepare_directio_read(pp->fd, &blksize, &buf, &restore_flags);
+ if (prepare_directio_read(pp->fd, &blksize, &buf, &restore_flags) < 0)
+ return PRIO_UNDEF;
temp = io_num;
while (temp-- > 0) {