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| author | Philipp Reisner <philipp.reisner@linbit.com> | 2014-11-10 17:21:14 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-11-10 09:27:41 -0700 |
| commit | 9581f97a687724ea41cf2e145dda4751161198c1 (patch) | |
| tree | 64bcd8625412df63a422f0671a81e0f50d211319 | |
| parent | 3b9d35d744bb5139f9fed57f38c019bb8c7d351c (diff) | |
| download | op-kernel-dev-9581f97a687724ea41cf2e145dda4751161198c1.zip op-kernel-dev-9581f97a687724ea41cf2e145dda4751161198c1.tar.gz | |
drbd: Fix state change in case of connection timeout
A connection timeout affects all volumes of a resource!
Under the following conditions:
A resource with multiple volumes
AND
ko-count >=1
AND
a write request triggers the timeout (ko-count * timeout)
DRBD's internal state gets confused. That in turn may
lead to very miss leading follow up failures. E.g.
"BUG: scheduling while atomic"
CC: stable@kernel.org # v3.17
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
| -rw-r--r-- | drivers/block/drbd/drbd_req.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c index 90319b1..3b797cd 100644 --- a/drivers/block/drbd/drbd_req.c +++ b/drivers/block/drbd/drbd_req.c @@ -1629,7 +1629,7 @@ void request_timer_fn(unsigned long data) time_after(now, req_peer->pre_send_jif + ent) && !time_in_range(now, connection->last_reconnect_jif, connection->last_reconnect_jif + ent)) { drbd_warn(device, "Remote failed to finish a request within ko-count * timeout\n"); - _drbd_set_state(_NS(device, conn, C_TIMEOUT), CS_VERBOSE | CS_HARD, NULL); + _conn_request_state(connection, NS(conn, C_TIMEOUT), CS_VERBOSE | CS_HARD); } if (dt && oldest_submit_jif != now && time_after(now, oldest_submit_jif + dt) && |
