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| author | Md Haris Iqbal <haris.iqbal@cloud.ionos.com> | 2021-04-28 08:13:58 +0200 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2021-05-03 11:00:11 -0600 |
| commit | 1056ad829ec43f9b705b507c2093b05e2088b0b7 (patch) | |
| tree | c05aef9cf34a7ea1365ea3d04086ab13aa457916 /drivers/block/rnbd/rnbd-clt.c | |
| parent | 292660fa35e8917a78235d39722edf9bbc04cab7 (diff) | |
| download | lwn-1056ad829ec43f9b705b507c2093b05e2088b0b7.tar.gz lwn-1056ad829ec43f9b705b507c2093b05e2088b0b7.zip | |
block/rnbd-clt: Check the return value of the function rtrs_clt_query
In case none of the paths are in connected state, the function
rtrs_clt_query returns an error. In such a case, error out since the
values in the rtrs_attrs structure would be garbage.
Fixes: f7a7a5c228d45 ("block/rnbd: client: main functionality")
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Reviewed-by: Guoqing Jiang <guoqing.jiang@ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com>
Link: https://lore.kernel.org/r/20210428061359.206794-4-gi-oh.kim@ionos.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'drivers/block/rnbd/rnbd-clt.c')
| -rw-r--r-- | drivers/block/rnbd/rnbd-clt.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/drivers/block/rnbd/rnbd-clt.c b/drivers/block/rnbd/rnbd-clt.c index 15f831159c31..f855bf1fa8d5 100644 --- a/drivers/block/rnbd/rnbd-clt.c +++ b/drivers/block/rnbd/rnbd-clt.c @@ -691,7 +691,11 @@ static void remap_devs(struct rnbd_clt_session *sess) return; } - rtrs_clt_query(sess->rtrs, &attrs); + err = rtrs_clt_query(sess->rtrs, &attrs); + if (err) { + pr_err("rtrs_clt_query(\"%s\"): %d\n", sess->sessname, err); + return; + } mutex_lock(&sess->lock); sess->max_io_size = attrs.max_io_size; @@ -1294,7 +1298,11 @@ find_and_get_or_create_sess(const char *sessname, err = PTR_ERR(sess->rtrs); goto wake_up_and_put; } - rtrs_clt_query(sess->rtrs, &attrs); + + err = rtrs_clt_query(sess->rtrs, &attrs); + if (err) + goto close_rtrs; + sess->max_io_size = attrs.max_io_size; sess->queue_depth = attrs.queue_depth; sess->nr_poll_queues = nr_poll_queues; |