kernel/linux
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ synced 2026-10-18 19:12:56 +00:00
Code Issues Releases Packages Activity
linux/arch/s390/kvm
History
Janosch Frank 035dcc8e87 KVM: s390: Disable dirty log retrieval for UCONTROL guests 
commit e1e8a9624f 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>
History 2017-03-15 10:02:40 +08:00
..
diag.c KVM: s390: provide logging for diagnose 0x500 2016-06-10 12:07:26 +02:00
gaccess.c KVM: s390: gaccess: simplify translation exception handling 2016-09-08 09:07:53 +02:00
gaccess.h s390/mm: take ipte_lock during shadow faults 2016-06-20 09:54:40 +02:00
guestdbg.c KVM: s390: Use memdup_user() rather than duplicating code 2016-09-08 13:40:55 +02:00
intercept.c KVM: s390: reject invalid modes for runtime instrumentation 2016-10-20 20:06:12 +02:00
interrupt.c KVM: s390: allow 255 VCPUs when sca entries aren't used 2016-09-08 13:40:53 +02:00
irq.h KVM: s390: irq routing for adapter interrupts. 2014-03-21 13:43:00 +01:00
Kconfig KVM: halt_polling: provide a way to qualify wakeups during poll 2016-05-13 17:29:23 +02:00
kvm-s390.c KVM: s390: Disable dirty log retrieval for UCONTROL guests 2017-03-15 10:02:40 +08:00
kvm-s390.h KVM: s390: allow 255 VCPUs when sca entries aren't used 2016-09-08 13:40:53 +02:00
Makefile KVM: s390: vsie: initial support for nested virtualization 2016-06-21 09:43:33 +02:00
priv.c KVM: s390: lazy enable RI 2016-09-08 13:40:39 +02:00
sigp.c KVM: s390: don't use CPUSTAT_WAIT to detect if a VCPU is idle 2016-06-21 09:43:45 +02:00
sthyi.c KVM: s390: Fix STHYI buffer alignment for diag224 2016-10-26 13:46:44 +02:00
trace-s390.h KVM: s390: obey kptr_restrict in traces 2015-12-15 17:06:32 +01:00
trace.h KVM: s390: trace and count all skey intercepts 2016-06-10 12:07:31 +02:00
vsie.c KVM: s390: vsie: fix riccbd 2016-09-05 13:48:50 +02:00