block: bfq: swap puts in bfqg_and_blkg_put
Fix trivial use-after-free. This could be last reference to bfqg.
Fixes: 8f9bebc33d
("block, bfq: access and cache blkg data only when safe")
Acked-by: Paolo Valente <paolo.valente@linaro.org>
Signed-off-by: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
hifive-unleashed-5.1
parent
8b2ded1c94
commit
d5274b3cd6
|
@ -275,9 +275,9 @@ static void bfqg_and_blkg_get(struct bfq_group *bfqg)
|
||||||
|
|
||||||
void bfqg_and_blkg_put(struct bfq_group *bfqg)
|
void bfqg_and_blkg_put(struct bfq_group *bfqg)
|
||||||
{
|
{
|
||||||
bfqg_put(bfqg);
|
|
||||||
|
|
||||||
blkg_put(bfqg_to_blkg(bfqg));
|
blkg_put(bfqg_to_blkg(bfqg));
|
||||||
|
|
||||||
|
bfqg_put(bfqg);
|
||||||
}
|
}
|
||||||
|
|
||||||
/* @stats = 0 */
|
/* @stats = 0 */
|
||||||
|
|
Loading…
Reference in New Issue