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android_kernel_oneplus_msm8998/arch/s390/kvm
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Janosch Frank 0a3df0418d KVM: s390: Disable dirty log retrieval for UCONTROL guests 
commit e1e8a9624f7ba8ead4f056ff558ed070e86fa747 upstream.

User controlled KVM guests do not support the dirty log, as they have
no single gmap that we can check for changes.

As they have no single gmap, kvm->arch.gmap is NULL and all further
referencing to it for dirty checking will result in a NULL
dereference.

Let's return -EINVAL if a caller tries to sync dirty logs for a
UCONTROL guest.

Fixes: 15f36eb ("KVM: s390: Add proper dirty bitmap support to S390 kvm.")
Signed-off-by: Janosch Frank <frankja@linux.vnet.ibm.com>
Reported-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Reviewed-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-03-15 09:57:11 +08:00
..
diag.c KVM: s390: add more debug data for the pfault diagnoses 2015-07-29 11:02:34 +02:00
gaccess.c KVM: s390: Add MEMOP ioctls for reading/writing guest memory 2015-03-17 16:26:24 +01:00
gaccess.h KVM: s390: Add MEMOP ioctls for reading/writing guest memory 2015-03-17 16:26:24 +01:00
guestdbg.c KVM: s390: filter space-switch events when PER is enforced 2015-07-29 10:36:22 +02:00
intercept.c KVM: s390: use simple switch statement as multiplexer 2015-10-29 15:59:11 +01:00
interrupt.c KVM: s390: fix wrong lookup of VCPUs by array index 2015-11-19 14:47:43 +01:00
irq.h
Kconfig rcu: Make SRCU optional by using CONFIG_SRCU 2015-01-06 11:04:29 -08:00
kvm-s390.c KVM: s390: Disable dirty log retrieval for UCONTROL guests 2017-03-15 09:57:11 +08:00
kvm-s390.h KVM: s390: factor out reading of the guest TOD clock 2015-10-13 15:50:35 +02:00
Makefile
priv.c KVM: s390: fix pfmf intercept handler 2015-11-19 11:08:17 +01:00
sigp.c KVM: s390: fix wrong lookup of VCPUs by array index 2015-11-19 14:47:43 +01:00
trace-s390.h KVM: s390: more irq names for trace events 2015-07-29 11:02:34 +02:00
trace.h KVM: s390: interpretive execution of SIGP EXTERNAL CALL 2014-05-16 14:57:28 +02:00