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[PATCH v2 3/4] s390x: sclp: fix error handling for oversize control bloc
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From: |
Claudio Imbrenda |
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Subject: |
[PATCH v2 3/4] s390x: sclp: fix error handling for oversize control blocks |
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Date: |
Fri, 27 Sep 2019 15:33:22 +0200 |
From: Janosch Frank <address@hidden>
Requests over 4k are not a spec exception.
Signed-off-by: Janosch Frank <address@hidden>
Reviewed-by: Jason J. Herne <address@hidden>
---
hw/s390x/sclp.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/hw/s390x/sclp.c b/hw/s390x/sclp.c
index 73244c9..abb6e50 100644
--- a/hw/s390x/sclp.c
+++ b/hw/s390x/sclp.c
@@ -213,8 +213,7 @@ int sclp_service_call(CPUS390XState *env, uint64_t sccb,
uint32_t code)
cpu_physical_memory_read(sccb, &work_sccb, sccb_len);
/* Valid sccb sizes */
- if (be16_to_cpu(work_sccb.h.length) < sizeof(SCCBHeader) ||
- be16_to_cpu(work_sccb.h.length) > SCCB_SIZE) {
+ if (be16_to_cpu(work_sccb.h.length) < sizeof(SCCBHeader)) {
r = -PGM_SPECIFICATION;
goto out;
}
--
2.7.4