From mboxrd@z Thu Jan 1 00:00:00 1970 From: "herbert cland" Subject: [XEN BUG] XEN + Qemu upstream + Qcow2 + coroutine = BOOM Date: Mon, 10 Feb 2014 17:47:33 +0800 Message-ID: <2014021017472829063425@gmail.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============4738104836848553965==" Return-path: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org To: xen-devel List-Id: xen-devel@lists.xenproject.org This is a multi-part message in MIME format. --===============4738104836848553965== Content-Type: multipart/alternative; boundary="----=_001_NextPart213635228552_=----" This is a multi-part message in MIME format. ------=_001_NextPart213635228552_=---- Content-Type: text/plain; charset="GB2312" Content-Transfer-Encoding: base64 RGVhciBBTEwhDQoNCnFjb3cyIGZvcm1hdCBkaXNrIHdvcmtzIHdlbGwgd2l0aCB4ZW4gZm9yIG1v c3QgY2FzZXM7DQpCVVQgaWYgdXNpbmcgY29yb3V0aW5lIGZ1bmN0aW9uIHN1Y2ggYXMgYmxvY2st c3RyZWFtLCB0aGUgcWVtdSBwcm9jZXNzIGNyYXNoZWQhDQpBbmQgd2UgY2FuIGZvdW5kIGZvbGxv d2luZyBtc2cgZnJvbSBjbWQgZG1lc2cNCg0KcWVtdS1zeXN0ZW0taTM4WzIwNTE0XTogc2VnZmF1 bHQgYXQgNjAgaXAgMDAwMDdmMmI2MGRjODc5YSBzcCAwMDAwN2ZmZmZjYzJmMDAwIGVycm9yIDQg aW4gcWVtdS1zeXN0ZW0taTM4Nls3ZjJiNjBjZGYwMDArNTI5MDAwXSANCg0KQW55IHN1Z2dlc3Rp b24/DQoNCi0tLS0tLS0tLS0tLS0tLS0NClhFTiB2ZXJzaW9uo7ogeGVuIDQuNC4wLXJjMw0KZ3Vl c3Qgb3MgOiBjZW50b3MgNi40DQoNCg0KDQoNCg0KaGVyYmVydCBjbGFuZA== ------=_001_NextPart213635228552_=---- Content-Type: text/html; charset="GB2312" Content-Transfer-Encoding: quoted-printable

Dear ALL!

qcow2 format disk works well with xen for = most=20 cases;

BUT if using coroutine function such as=20 block-stream, the qemu process crashed!

And we can found following msg from cmd=20 dmesg

qemu-system-i38[20514]: segfault at 60 ip=20 00007f2b60dc879a sp 00007ffffcc2f000 error 4 in=20 qemu-system-i386[7f2b60cdf000+529000]

Any suggestion?

----------------

XEN version=A3=BA xen 4.4.0-rc3

guest os : centos 6.4

herbert cland

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