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| author | Konstantin Khlebnikov <khlebnikov@yandex-team.ru> | 2018-09-06 11:05:44 +0300 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2018-09-06 11:32:58 -0600 |
| commit | d5274b3cd6a814ccb2f56d81ee87cbbf51bd4cf7 (patch) | |
| tree | 0b89b27d5406615c5c235347583086bb6e3c7815 | |
| parent | 8b2ded1c94c06f841f8c1612bcfa33c85012a36b (diff) | |
| download | linux-d5274b3cd6a814ccb2f56d81ee87cbbf51bd4cf7.tar.gz linux-d5274b3cd6a814ccb2f56d81ee87cbbf51bd4cf7.tar.bz2 linux-d5274b3cd6a814ccb2f56d81ee87cbbf51bd4cf7.zip | |
block: bfq: swap puts in bfqg_and_blkg_put
Fix trivial use-after-free. This could be last reference to bfqg.
Fixes: 8f9bebc33dd7 ("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>
| -rw-r--r-- | block/bfq-cgroup.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/block/bfq-cgroup.c b/block/bfq-cgroup.c index 58c6efa9f9a9..9fe5952d117d 100644 --- a/block/bfq-cgroup.c +++ b/block/bfq-cgroup.c @@ -275,9 +275,9 @@ static void bfqg_and_blkg_get(struct bfq_group *bfqg) void bfqg_and_blkg_put(struct bfq_group *bfqg) { - bfqg_put(bfqg); - blkg_put(bfqg_to_blkg(bfqg)); + + bfqg_put(bfqg); } /* @stats = 0 */ |