From: Stefan Haberland sth@linux.ibm.com
[ Upstream commit 669f3765b755fd8739ab46ce3a9c6292ce8b3d2a ]
During offline processing two worker threads are canceled without freeing the device reference which leads to a hanging offline process.
Reviewed-by: Jan Hoeppner hoeppner@linux.ibm.com Signed-off-by: Stefan Haberland sth@linux.ibm.com Signed-off-by: Martin Schwidefsky schwidefsky@de.ibm.com Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- drivers/s390/block/dasd_eckd.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index 3a3e1dfcb032..ff1ab6da8cff 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -2066,8 +2066,11 @@ static int dasd_eckd_basic_to_ready(struct dasd_device *device)
static int dasd_eckd_online_to_ready(struct dasd_device *device) { - cancel_work_sync(&device->reload_device); - cancel_work_sync(&device->kick_validate); + if (cancel_work_sync(&device->reload_device)) + dasd_put_device(device); + if (cancel_work_sync(&device->kick_validate)) + dasd_put_device(device); + return 0; };