Commit eb072a79 authored by Sebastian Ott's avatar Sebastian Ott Committed by Martin Schwidefsky
Browse files

s390/cio: fix unlocked access of global bitmap 



Access to the slow_subchannel_set has to be secured via the
slow_subchannel_lock.

Signed-off-by: default avatarSebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
parent 57b5918c

drivers/s390/cio/css.c

+2 −0
Original line number Diff line number Diff line
@@ -546,7 +546,9 @@ static int slow_eval_unknown_fn(struct subchannel_id schid, void *data) 
		case -ENOMEM:

		case -EIO:

			/* These should abort looping */

			spin_lock_irq(&slow_subchannel_lock);

			idset_sch_del_subseq(slow_subchannel_set, schid);

			spin_unlock_irq(&slow_subchannel_lock);

			break;

		default:

			rc = 0;