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bcache: fix possible memory leak in bch_cached_dev_run() 

memory malloced in bch_cached_dev_run() and should be freed before
leaving from the error handling cases, otherwise it will cause
memory leak.

Fixes: 0b13efecf5 ("bcache: add return value check to bch_cached_dev_run()")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Coly Li <colyli@suse.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
alistair/sunxi64-5.4-dsi
Wei Yongjun 2019-07-22 22:12:36 +08:00 committed by Jens Axboe
parent 9310a7ba6d
commit 5d9e06d60e
1 changed files with 3 additions and 0 deletions
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3
drivers/md/bcache/super.c
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@ -931,6 +931,9 @@ int bch_cached_dev_run(struct cached_dev *dc)
if (dc->io_disable) {
pr_err("I/O disabled on cached dev %s",
dc->backing_dev_name);
kfree(env[1]);
kfree(env[2]);
kfree(buf);
return -EIO;
}