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Wed, 5 Jun 2019 16:22:43 +0000 (UTC) To: John Snow , Gerd Hoffmann References: From: Max Reitz Openpgp: preference=signencrypt Autocrypt: addr=mreitz@redhat.com; prefer-encrypt=mutual; keydata= mQENBFXOJlcBCADEyyhOTsoa/2ujoTRAJj4MKA21dkxxELVj3cuILpLTmtachWj7QW+TVG8U /PsMCFbpwsQR7oEy8eHHZwuGQsNpEtNC2G/L8Yka0BIBzv7dEgrPzIu+W3anZXQW4702+uES U29G8TP/NGfXRRHGlbBIH9KNUnOSUD2vRtpOLXkWsV5CN6vQFYgQfFvmp5ZpPeUe6xNplu8V mcTw8OSEDW/ZnxJc8TekCKZSpdzYoxfzjm7xGmZqB18VFwgJZlIibt1HE0EB4w5GsD7x5ekh awIe3RwoZgZDLQMdOitJ1tUc8aqaxvgA4tz6J6st8D8pS//m1gAoYJWGwwIVj1DjTYLtABEB AAG0HU1heCBSZWl0eiA8bXJlaXR6QHJlZGhhdC5jb20+iQFTBBMBCAA9AhsDBQkSzAMABQsJ CAcCBhUICQoLAgQWAgMBAh4BAheABQJVzie5FRhoa3A6Ly9rZXlzLmdudXBnLm5ldAAKCRD0 B9sAYdXPQDcIB/9uNkbYEex1rHKz3mr12uxYMwLOOFY9fstP5aoVJQ1nWQVB6m2cfKGdcRe1 2/nFaHSNAzT0NnKz2MjhZVmcrpyd2Gp2QyISCfb1FbT82GMtXFj1wiHmPb3CixYmWGQUUh+I AvUqsevLA+WihgBUyaJq/vuDVM1/K9Un+w+Tz5vpeMidlIsTYhcsMhn0L9wlCjoucljvbDy/ 8C9L2DUdgi3XTa0ORKeflUhdL4gucWoAMrKX2nmPjBMKLgU7WLBc8AtV+84b9OWFML6NEyo4 4cP7cM/07VlJK53pqNg5cHtnWwjHcbpGkQvx6RUx6F1My3y52vM24rNUA3+ligVEgPYBuQEN BFXOJlcBCADAmcVUNTWT6yLWQHvxZ0o47KCP8OcLqD+67T0RCe6d0LP8GsWtrJdeDIQk+T+F xO7DolQPS6iQ6Ak2/lJaPX8L0BkEAiMuLCKFU6Bn3lFOkrQeKp3u05wCSV1iKnhg0UPji9V2 W5eNfy8F4ZQHpeGUGy+liGXlxqkeRVhLyevUqfU0WgNqAJpfhHSGpBgihUupmyUg7lfUPeRM DzAN1pIqoFuxnN+BRHdAecpsLcbR8sQddXmDg9BpSKozO/JyBmaS1RlquI8HERQoe6EynJhd 64aICHDfj61rp+/0jTIcevxIIAzW70IadoS/y3DVIkuhncgDBvGbF3aBtjrJVP+5ABEBAAGJ ASUEGAEIAA8FAlXOJlcCGwwFCRLMAwAACgkQ9AfbAGHVz0CbFwf9F/PXxQR9i4N0iipISYjU sxVdjJOM2TMut+ZZcQ6NSMvhZ0ogQxJ+iEQ5OjnIputKvPVd5U7WRh+4lF1lB/NQGrGZQ1ic alkj6ocscQyFwfib+xIe9w8TG1CVGkII7+TbS5pXHRxZH1niaRpoi/hYtgzkuOPp35jJyqT/ /ELbqQTDAWcqtJhzxKLE/ugcOMK520dJDeb6x2xVES+S5LXby0D4juZlvUj+1fwZu+7Io5+B bkhSVPb/QdOVTpnz7zWNyNw+OONo1aBUKkhq2UIByYXgORPFnbfMY7QWHcjpBVw9MgC4tGeF R4bv+1nAMMxKmb5VvQCExr0eFhJUAHAhVg== Message-ID: Date: Wed, 5 Jun 2019 18:22:41 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="Ayq8fE1kZFsM2g5zoKprtuzlwKSGiqQdz" X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.28]); Wed, 05 Jun 2019 16:22:50 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 X-Content-Filtered-By: Mailman/MimeDel 2.1.21 Subject: Re: [Qemu-devel] sigsegv in chardev on iotest 045 (raw) X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: qemu-devel Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --Ayq8fE1kZFsM2g5zoKprtuzlwKSGiqQdz From: Max Reitz To: John Snow , Gerd Hoffmann Cc: qemu-devel Message-ID: Subject: Re: [Qemu-devel] sigsegv in chardev on iotest 045 (raw) References: In-Reply-To: Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 05.06.19 03:15, John Snow wrote: > Running tests on a development branch (I haven't touched chardev stuff,= > I swear!); I ran into the below crash where s->ioc was NULL. I don't > have the time to investigate at this exact moment, so please excuse the= > hasty report so I don't forget to tell someone. >=20 > It does not reproduce consistently, and I can't get it to show up again= =2E >=20 > (Is this maybe just a race on close where the device went away too fast= > and it had nowhere to print the information? --js) Your back trace looks exactly like what I posted in http://lists.nongnu.org/archive/html/qemu-devel/2018-12/msg05579.html . No, I don=E2=80=99t think anybody has posted a fix for this so far. I kn= ow other people saw similar issues. I know what I have on my test branch (which contains various fixes to make all iotests run or at least pass those which are terminally broken):= https://git.xanclic.moe/XanClic/qemu/commit/c52433f218c61ef608ab4d9abb56e= 1f705a3ae22 I have a lot of patches on my test branch. (15, to be exact.) Max --Ayq8fE1kZFsM2g5zoKprtuzlwKSGiqQdz Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEkb62CjDbPohX0Rgp9AfbAGHVz0AFAlz37FEACgkQ9AfbAGHV z0DARQgAj1G6RnLntDEKpKQu2XUiK+5izFyGrw90feKhf/7HdGpC4+qS0fq9IWUg enx6xZhrOQUaxGSjoDARk+FZyOeWhvbRARpLEOeMpP5+Rtfsl68x0/qa7rc1TOEo 62iTeTlvhUoieX04qnjtONoysoXXc59XZAOBGONBK2U4JgJ9Hgeazpryj0jywye5 4n6gIlZXgbvxJC0vGuHFnd9DGWUxz+yBA4jRM9lS/eAahjGV9IJWxDP0nvItoyi4 OvUUFDYsS/FL55dlQIUX0zBuKkk/ZohSYpLdcKfy6nISzPE4nUOGvSiGlzAVEYWO TZUt3JAWvQP7jgtslfkx8CmSgClVhg== =su+T -----END PGP SIGNATURE----- --Ayq8fE1kZFsM2g5zoKprtuzlwKSGiqQdz--