Harald Freudenberger 026499a9c2 s390/zcrypt: fix zcard and zqueue hot-unplug memleak ... commit 70fac8088cfad9f3b379c9082832b4d7532c16c2 upstream. Tests with kvm and a kmemdebug kernel showed, that on hot unplug the zcard and zqueue structs for the unplugged card or queue are not properly freed because of a mismatch with get/put for the embedded kref counter. This fix now adjusts the handling of the kref counters. With init the kref counter starts with 1. This initial value needs to drop to zero with the unregister of the card or queue to trigger the release and free the object. Fixes: 29c2680fd2 ("s390/ap: fix ap devices reference counting") Reported-by: Marc Hartmayer <mhartmay@linux.ibm.com> Signed-off-by: Harald Freudenberger <freude@linux.ibm.com> Cc: stable@vger.kernel.org Reviewed-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-05-11 14:47:11 +02:00
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block	s390/dasd: fix hanging IO request during DASD driver unbind	2021-03-17 17:06:28 +01:00
char	s390 updates for the 5.10 merge window	2020-10-16 12:36:38 -07:00
cio	s390/cio: return -EFAULT if copy_to_user() fails	2021-03-17 17:06:19 +01:00
crypto	s390/zcrypt: fix zcard and zqueue hot-unplug memleak	2021-05-11 14:47:11 +02:00
net	s390/qeth: schedule TX NAPI on QAOB completion	2021-03-25 09:04:13 +01:00
scsi	s390 updates for the 5.10 merge window	2020-10-16 12:36:38 -07:00
virtio	virtio/s390: implement virtio-ccw revision 2 correctly	2021-03-04 11:38:42 +01:00
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