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SUSE:SLE-12-SP4:GA
xen.1317
xsa152.patch
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File xsa152.patch of Package xen.1317
x86: rate-limit logging in do_xen{oprof,pmu}_op() Some of the sub-ops are acessible to all guests, and hence should be rate-limited. In the xenoprof case, just like for XSA-146, include them only in debug builds. Since the vPMU code is rather new, allow them to be always present, but downgrade them to (rate limited) guest messages. This is XSA-152. Signed-off-by: Jan Beulich <jbeulich@suse.com> Index: xen-4.4.3-testing/xen/common/xenoprof.c =================================================================== --- xen-4.4.3-testing.orig/xen/common/xenoprof.c +++ xen-4.4.3-testing/xen/common/xenoprof.c @@ -670,15 +670,13 @@ ret_t do_xenoprof_op(int op, XEN_GUEST_H if ( (op < 0) || (op > XENOPROF_last_op) ) { - printk("xenoprof: invalid operation %d for domain %d\n", - op, current->domain->domain_id); + gdprintk(XENLOG_DEBUG, "invalid operation %d\n", op); return -EINVAL; } if ( !NONPRIV_OP(op) && (current->domain != xenoprof_primary_profiler) ) { - printk("xenoprof: dom %d denied privileged operation %d\n", - current->domain->domain_id, op); + gdprintk(XENLOG_DEBUG, "denied privileged operation %d\n", op); return -EPERM; } @@ -901,8 +899,7 @@ ret_t do_xenoprof_op(int op, XEN_GUEST_H spin_unlock(&xenoprof_lock); if ( ret < 0 ) - printk("xenoprof: operation %d failed for dom %d (status : %d)\n", - op, current->domain->domain_id, ret); + gdprintk(XENLOG_DEBUG, "operation %d failed: %d\n", op, ret); return ret; }
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