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[PATCHv2,for-next,3/7] block/rnbd-srv: Protect dev session sysfs removal

Message ID 20201210101826.29656-4-jinpu.wang@cloud.ionos.com (mailing list archive)
State New, archived
Headers show
Series Misc update for rnbd | expand

Commit Message

Jinpu Wang Dec. 10, 2020, 10:18 a.m. UTC 
From: Md Haris Iqbal <haris.iqbal@cloud.ionos.com>

Since the removal of the session sysfs can also be called from the
function destroy_sess, there is a need to protect the call from the
function rnbd_srv_sess_dev_force_close

Fixes: 786998050cbc ("block/rnbd-srv: close a mapped device from server side.")
Signed-off-by: Md Haris Iqbal <haris.iqbal@cloud.ionos.com>
Reviewed-by: Guoqing Jiang <guoqing.jiang@cloud.ionos.com>
Signed-off-by: Jack Wang <jinpu.wang@cloud.ionos.com>
---
 drivers/block/rnbd/rnbd-srv.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/block/rnbd/rnbd-srv.c b/drivers/block/rnbd/rnbd-srv.c
index d1ee72ed8384..066411cce5e2 100644
--- a/drivers/block/rnbd/rnbd-srv.c
+++ b/drivers/block/rnbd/rnbd-srv.c
@@ -338,9 +338,10 @@  static int rnbd_srv_link_ev(struct rtrs_srv *rtrs,
 
 void rnbd_srv_sess_dev_force_close(struct rnbd_srv_sess_dev *sess_dev)
 {
+	mutex_lock(&sess_dev->sess->lock);
 	rnbd_srv_destroy_dev_session_sysfs(sess_dev);
+	mutex_unlock(&sess_dev->sess->lock);
 	sess_dev->keep_id = true;
-
 }
 
 static int process_msg_close(struct rtrs_srv *rtrs,