From: "Jan Beulich" <JBeulich@suse.com>
To: xen-devel <xen-devel@lists.xenproject.org>
Cc: Stefano Stabellini <sstabellini@kernel.org>,
Wei Liu <wei.liu2@citrix.com>,
Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>,
George Dunlap <George.Dunlap@eu.citrix.com>,
Andrew Cooper <andrew.cooper3@citrix.com>,
Ian Jackson <Ian.Jackson@eu.citrix.com>, Tim Deegan <tim@xen.org>,
Julien Grall <julien.grall@arm.com>
Subject: [PATCH] fix uninitialized variable error in do_poll()
Date: Fri, 05 Oct 2018 04:12:10 -0600 [thread overview]
Message-ID: <5BB738FA02000078001EEB89@prv1-mh.provo.novell.com> (raw)
Now that CONFIG_HVM can (and should) be turned off for the shim, gcc 8.2
apparently is no longer sure that "port" is indeed initialized at
if ( sched_poll->nr_ports == 1 )
v->poll_evtchn = port;
It doesn't look to be impossible for the compiler to prove it is not,
but we also can't rely on that to be the case. Add an initializer.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
--- a/xen/common/schedule.c
+++ b/xen/common/schedule.c
@@ -1014,7 +1014,7 @@ static long do_poll(struct sched_poll *s
{
struct vcpu *v = current;
struct domain *d = v->domain;
- evtchn_port_t port;
+ evtchn_port_t port = 0;
long rc;
unsigned int i;
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next reply other threads:[~2018-10-05 10:12 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-05 10:12 Jan Beulich [this message]
2018-10-05 10:28 ` [PATCH] fix uninitialized variable error in do_poll() Wei Liu
2018-10-05 11:22 ` Jan Beulich
2018-10-05 11:25 ` Wei Liu
2018-10-05 11:43 ` Andrew Cooper
2018-10-05 11:56 ` Jan Beulich
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