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Fri, 14 Feb 2020 17:17:23 +0000 (UTC) From: Stefan Hajnoczi To: qemu-devel@nongnu.org Subject: [PATCH 1/5] aio-posix: fix use after leaving scope in aio_poll() Date: Fri, 14 Feb 2020 17:17:08 +0000 Message-Id: <20200214171712.541358-2-stefanha@redhat.com> In-Reply-To: <20200214171712.541358-1-stefanha@redhat.com> References: <20200214171712.541358-1-stefanha@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: ch3_E6IMPeOCiv8erYUMFg-1 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: base64 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 207.211.31.81 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Fam Zheng , Kevin Wolf , qemu-block@nongnu.org, Max Reitz , Stefan Hajnoczi , =?UTF-8?q?Marc-Andr=C3=A9=20Lureau?= , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" ZXBvbGxfaGFuZGxlciBpcyBhIHN0YWNrIHZhcmlhYmxlIGFuZCBtdXN0IG5vdCBiZSBhY2Nlc3Nl ZCBhZnRlciBpdCBnb2VzCm91dCBvZiBzY29wZToKCiAgICAgIGlmIChhaW9fZXBvbGxfY2hlY2tf cG9sbChjdHgsIHBvbGxmZHMsIG5wZmQsIHRpbWVvdXQpKSB7CiAgICAgICAgICBBaW9IYW5kbGVy IGVwb2xsX2hhbmRsZXI7CiAgICAgICAgICAuLi4KICAgICAgICAgIGFkZF9wb2xsZmQoJmVwb2xs X2hhbmRsZXIpOwogICAgICAgICAgcmV0ID0gYWlvX2Vwb2xsKGN0eCwgcG9sbGZkcywgbnBmZCwg dGltZW91dCk7CiAgICAgIH0gLi4uCgogIC4uLgoKICAvKiBpZiB3ZSBoYXZlIGFueSByZWFkYWJs ZSBmZHMsIGRpc3BhdGNoIGV2ZW50ICovCiAgaWYgKHJldCA+IDApIHsKICAgICAgZm9yIChpID0g MDsgaSA8IG5wZmQ7IGkrKykgewogICAgICAgICAgbm9kZXNbaV0tPnBmZC5yZXZlbnRzID0gcG9s bGZkc1tpXS5yZXZlbnRzOwogICAgICB9CiAgfQoKbm9kZXNbMF0gaXMgJmVwb2xsX2hhbmRsZXIs IHdoaWNoIGhhcyBhbHJlYWR5IGdvbmUgb3V0IG9mIHNjb3BlLgoKVGhlcmUgaXMgbm8gbmVlZCB0 byB1c2UgcG9sbGZkc1tdIGZvciBlcG9sbC4gIFdlIGRvbid0IG5lZWQgYW4KQWlvSGFuZGxlciBm b3IgdGhlIGVwb2xsIGZkLgoKU2lnbmVkLW9mZi1ieTogU3RlZmFuIEhham5vY3ppIDxzdGVmYW5o YUByZWRoYXQuY29tPgotLS0KIHV0aWwvYWlvLXBvc2l4LmMgfCAyMCArKysrKysrKy0tLS0tLS0t LS0tLQogMSBmaWxlIGNoYW5nZWQsIDggaW5zZXJ0aW9ucygrKSwgMTIgZGVsZXRpb25zKC0pCgpk aWZmIC0tZ2l0IGEvdXRpbC9haW8tcG9zaXguYyBiL3V0aWwvYWlvLXBvc2l4LmMKaW5kZXggYTQ5 NzdmNTM4ZS4uMzFhOGUwM2NhNyAxMDA2NDQKLS0tIGEvdXRpbC9haW8tcG9zaXguYworKysgYi91 dGlsL2Fpby1wb3NpeC5jCkBAIC0xMDQsMTcgKzEwNCwxOCBAQCBzdGF0aWMgdm9pZCBhaW9fZXBv bGxfdXBkYXRlKEFpb0NvbnRleHQgKmN0eCwgQWlvSGFuZGxlciAqbm9kZSwgYm9vbCBpc19uZXcp CiAgICAgfQogfQogCi1zdGF0aWMgaW50IGFpb19lcG9sbChBaW9Db250ZXh0ICpjdHgsIEdQb2xs RkQgKnBmZHMsCi0gICAgICAgICAgICAgICAgICAgICB1bnNpZ25lZCBucGZkLCBpbnQ2NF90IHRp bWVvdXQpCitzdGF0aWMgaW50IGFpb19lcG9sbChBaW9Db250ZXh0ICpjdHgsIGludDY0X3QgdGlt ZW91dCkKIHsKKyAgICBHUG9sbEZEIHBmZCA9IHsKKyAgICAgICAgLmZkID0gY3R4LT5lcG9sbGZk LAorICAgICAgICAuZXZlbnRzID0gR19JT19JTiB8IEdfSU9fT1VUIHwgR19JT19IVVAgfCBHX0lP X0VSUiwKKyAgICB9OwogICAgIEFpb0hhbmRsZXIgKm5vZGU7CiAgICAgaW50IGksIHJldCA9IDA7 CiAgICAgc3RydWN0IGVwb2xsX2V2ZW50IGV2ZW50c1sxMjhdOwogCi0gICAgYXNzZXJ0KG5wZmQg PT0gMSk7Ci0gICAgYXNzZXJ0KHBmZHNbMF0uZmQgPT0gY3R4LT5lcG9sbGZkKTsKICAgICBpZiAo dGltZW91dCA+IDApIHsKLSAgICAgICAgcmV0ID0gcWVtdV9wb2xsX25zKHBmZHMsIG5wZmQsIHRp bWVvdXQpOworICAgICAgICByZXQgPSBxZW11X3BvbGxfbnMoJnBmZCwgMSwgdGltZW91dCk7CiAg ICAgfQogICAgIGlmICh0aW1lb3V0IDw9IDAgfHwgcmV0ID4gMCkgewogICAgICAgICByZXQgPSBl cG9sbF93YWl0KGN0eC0+ZXBvbGxmZCwgZXZlbnRzLApAQCAtNjU4LDEzICs2NTksOCBAQCBib29s IGFpb19wb2xsKEFpb0NvbnRleHQgKmN0eCwgYm9vbCBibG9ja2luZykKIAogICAgICAgICAvKiB3 YWl0IHVudGlsIG5leHQgZXZlbnQgKi8KICAgICAgICAgaWYgKGFpb19lcG9sbF9jaGVja19wb2xs KGN0eCwgcG9sbGZkcywgbnBmZCwgdGltZW91dCkpIHsKLSAgICAgICAgICAgIEFpb0hhbmRsZXIg ZXBvbGxfaGFuZGxlcjsKLQotICAgICAgICAgICAgZXBvbGxfaGFuZGxlci5wZmQuZmQgPSBjdHgt PmVwb2xsZmQ7Ci0gICAgICAgICAgICBlcG9sbF9oYW5kbGVyLnBmZC5ldmVudHMgPSBHX0lPX0lO IHwgR19JT19PVVQgfCBHX0lPX0hVUCB8IEdfSU9fRVJSOwotICAgICAgICAgICAgbnBmZCA9IDA7 Ci0gICAgICAgICAgICBhZGRfcG9sbGZkKCZlcG9sbF9oYW5kbGVyKTsKLSAgICAgICAgICAgIHJl dCA9IGFpb19lcG9sbChjdHgsIHBvbGxmZHMsIG5wZmQsIHRpbWVvdXQpOworICAgICAgICAgICAg bnBmZCA9IDA7IC8qIHBvbGxmZHNbXSBpcyBub3QgYmVpbmcgdXNlZCAqLworICAgICAgICAgICAg cmV0ID0gYWlvX2Vwb2xsKGN0eCwgdGltZW91dCk7CiAgICAgICAgIH0gZWxzZSAgewogICAgICAg ICAgICAgcmV0ID0gcWVtdV9wb2xsX25zKHBvbGxmZHMsIG5wZmQsIHRpbWVvdXQpOwogICAgICAg ICB9Ci0tIAoyLjI0LjEKCg==