Commit 6f6c9333 authored by Janosch Frank's avatar Janosch Frank Committed by Christian Borntraeger
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s390x: sclp: boundary check 



All sclp codes need to be checked for page boundary violations.

Signed-off-by: default avatarJanosch Frank <frankja@linux.ibm.com>
Reviewed-by: default avatarJason J. Herne <jjherne@linux.ibm.com>
Message-Id: <1569591203-15258-3-git-send-email-imbrenda@linux.ibm.com>
Reviewed-by: default avatarDavid Hildenbrand <david@redhat.com>
Signed-off-by: default avatarChristian Borntraeger <borntraeger@de.ibm.com>
parent 679b8447

hw/s390x/sclp.c

+5 −0
Original line number Diff line number Diff line
@@ -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,