tree 9c4727a695f1f8f0e92fa5c94de94b1478fd318a
parent 75ba4ada8286d415bcaab993ce1f11125b8aa13e
author Colin Ian King <colin.king@canonical.com> 1492697238 +0100
committer Jens Axboe <axboe@fb.com> 1492697963 -0600

block, bfq: don't dereference bic before null checking it

The call to bfq_check_ioprio_change will dereference bic, however,
the null check for bic is after this call.  Move the the null
check on bic to before the call to avoid any potential null
pointer dereference issues.

Detected by CoverityScan, CID#1430138 ("Dereference before null check")

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Jens Axboe <axboe@fb.com>