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[PULL 04/12] s390x: sclp: boundary check
From: |
Christian Borntraeger |
Subject: |
[PULL 04/12] s390x: sclp: boundary check |
Date: |
Mon, 30 Sep 2019 15:19:47 +0200 |
From: Janosch Frank <address@hidden>
All sclp codes need to be checked for page boundary violations.
Signed-off-by: Janosch Frank <address@hidden>
Reviewed-by: Jason J. Herne <address@hidden>
Message-Id: <address@hidden>
Reviewed-by: David Hildenbrand <address@hidden>
Signed-off-by: Christian Borntraeger <address@hidden>
---
hw/s390x/sclp.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index 95ebfe7bd2f1..73244c938b10 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -234,6 +234,11 @@ int sclp_service_call(CPUS390XState *env, uint64_t sccb,
uint32_t code)
goto out_write;
}
+ if ((sccb + be16_to_cpu(work_sccb.h.length)) > ((sccb & PAGE_MASK) +
PAGE_SIZE)) {
+ work_sccb.h.response_code =
cpu_to_be16(SCLP_RC_SCCB_BOUNDARY_VIOLATION);
+ goto out_write;
+ }
+
sclp_c->execute(sclp, &work_sccb, code);
out_write:
cpu_physical_memory_write(sccb, &work_sccb,
--
2.21.0
- [PULL 01/12] MAINTAINERS: Update S390 PCI Maintainer, (continued)
- [PULL 01/12] MAINTAINERS: Update S390 PCI Maintainer, Christian Borntraeger, 2019/09/30
- [PULL 08/12] kvm: extract kvm_log_clear_one_slot, Christian Borntraeger, 2019/09/30
- [PULL 02/12] s390: PCI: fix IOMMU region init, Christian Borntraeger, 2019/09/30
- [PULL 03/12] s390x: sclp: refactor invalid command check, Christian Borntraeger, 2019/09/30
- [PULL 07/12] configure: Remove s390 (31-bit mode) from the list of supported CPUs, Christian Borntraeger, 2019/09/30
- [PULL 09/12] kvm: clear dirty bitmaps from all overlapping memslots, Christian Borntraeger, 2019/09/30
- [PULL 05/12] s390x: sclp: fix error handling for oversize control blocks, Christian Borntraeger, 2019/09/30
- [PULL 12/12] s390/kvm: split kvm mem slots at 4TB, Christian Borntraeger, 2019/09/30
- [PULL 11/12] s390: do not call memory_region_allocate_system_memory() multiple times, Christian Borntraeger, 2019/09/30
- [PULL 06/12] s390x: sclp: Report insufficient SCCB length, Christian Borntraeger, 2019/09/30
- [PULL 04/12] s390x: sclp: boundary check,
Christian Borntraeger <=
- [PULL 10/12] kvm: split too big memory section on several memslots, Christian Borntraeger, 2019/09/30