Halil Pasic d66a735571 vfio: ccw: fix cleanup if cp_prefetch fails ... If the translation of a channel program fails, we may end up attempting to clean up (free, unpin) stuff that never got translated (and allocated, pinned) in the first place. By adjusting the lengths of the chains accordingly (so the element that failed, and all subsequent elements are excluded) cleanup activities based on false assumptions can be avoided. Let's make sure cp_free works properly after cp_prefetch returns with an error by setting ch_len of a ccw chain to the number of the translated CCWs on that chain. Cc: stable@vger.kernel.org #v4.12+ Acked-by: Pierre Morel <pmorel@linux.vnet.ibm.com> Reviewed-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Signed-off-by: Halil Pasic <pasic@linux.vnet.ibm.com> Signed-off-by: Dong Jia Shi <bjsdjshi@linux.vnet.ibm.com> Message-Id: <20180423110113.59385-2-bjsdjshi@linux.vnet.ibm.com> [CH: fixed typos] Signed-off-by: Cornelia Huck <cohuck@redhat.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		2018-04-27 07:23:20 +02:00
..
block	s390/dasd: fix IO error for newly defined devices	2018-04-23 07:57:16 +02:00
char	s390/sclp: avoid potential usage of uninitialized value	2018-04-16 09:10:17 +02:00
cio	vfio: ccw: fix cleanup if cp_prefetch fails	2018-04-27 07:23:20 +02:00
crypto	s390/zcrypt: Support up to 256 crypto adapters.	2018-04-11 10:36:27 +02:00
net	s390/qeth: use Read device to query hypervisor for MAC	2018-04-22 14:42:32 -04:00
scsi	bsg-lib: introduce a timeout field in struct bsg_job	2018-03-13 11:40:21 -06:00
virtio	virtio/s390: implement PM operations for virtio_ccw	2018-02-14 14:34:09 +02:00
Makefile	kbuild: rename built-in.o to built-in.a	2018-03-26 02:01:19 +09:00