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Thu, 24 Jun 2021 07:32:36 +0000 (UTC) Received: from imap.suse.de (imap-alt.suse-dmz.suse.de [192.168.254.47]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 25E242197E; Thu, 24 Jun 2021 07:32:35 +0000 (UTC) Received: from imap3-int (imap-alt.suse-dmz.suse.de [192.168.254.47]) by imap.suse.de (Postfix) with ESMTP id E97A011A97; Thu, 24 Jun 2021 07:32:34 +0000 (UTC) Received: from director2.suse.de ([192.168.254.72]) by imap3-int with ESMTPSA id pV9xNxI11GDFAQAALh3uQQ (envelope-from ); Thu, 24 Jun 2021 07:32:34 +0000 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 335ab086-46c3-4d6a-a5c6-636657cbd23b DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1624519955; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=TpIF/bILtwA0IBDOGphI5lxgdvfBEarVL1t14bm/ApU=; b=eVdgNX5LiWCXMCxhdUJzAbSYn+VdhWHEJw4wPEMOARY2Y7S3p4Ois5J+YLWQnedrz3Bbxb X020YgHWRorvD+2fVCGRRiUKK9QZgsDqk0UkZ4VxRWbrvIpjeoxP6xH46H/B2VEHp3q7vU c6XngP0WWi5Jvyp/y0pohNbXegMN4+c= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1624519955; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=TpIF/bILtwA0IBDOGphI5lxgdvfBEarVL1t14bm/ApU=; b=eVdgNX5LiWCXMCxhdUJzAbSYn+VdhWHEJw4wPEMOARY2Y7S3p4Ois5J+YLWQnedrz3Bbxb X020YgHWRorvD+2fVCGRRiUKK9QZgsDqk0UkZ4VxRWbrvIpjeoxP6xH46H/B2VEHp3q7vU c6XngP0WWi5Jvyp/y0pohNbXegMN4+c= Subject: Re: [PATCH 03/10] tools/xenstore: Don't assume conn->in points to the LU request To: Julien Grall , xen-devel@lists.xenproject.org Cc: raphning@amazon.co.uk, doebel@amazon.de, Julien Grall , Ian Jackson , Wei Liu References: <20210616144324.31652-1-julien@xen.org> <20210616144324.31652-4-julien@xen.org> From: Juergen Gross Message-ID: Date: Thu, 24 Jun 2021 09:32:33 +0200 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.10.0 MIME-Version: 1.0 In-Reply-To: <20210616144324.31652-4-julien@xen.org> Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="W0ktchS0A5MkVawIUIt96y0jshRyNBOaC" This is an OpenPGP/MIME signed message (RFC 4880 and 3156) --W0ktchS0A5MkVawIUIt96y0jshRyNBOaC Content-Type: multipart/mixed; boundary="U2wKpwtlBTcvdhcInmyT3IOmaaeD89RvH"; protected-headers="v1" From: Juergen Gross To: Julien Grall , xen-devel@lists.xenproject.org Cc: raphning@amazon.co.uk, doebel@amazon.de, Julien Grall , Ian Jackson , Wei Liu Message-ID: Subject: Re: [PATCH 03/10] tools/xenstore: Don't assume conn->in points to the LU request References: <20210616144324.31652-1-julien@xen.org> <20210616144324.31652-4-julien@xen.org> In-Reply-To: <20210616144324.31652-4-julien@xen.org> --U2wKpwtlBTcvdhcInmyT3IOmaaeD89RvH Content-Type: multipart/mixed; boundary="------------48FEEF55307F5316D5CEDD88" Content-Language: en-US This is a multi-part message in MIME format. --------------48FEEF55307F5316D5CEDD88 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable On 16.06.21 16:43, Julien Grall wrote: > From: Julien Grall >=20 > call_delayed() is currently assuming that conn->in is NULL when > handling delayed request. However, the connection is not paused. > Therefore new request can be processed and conn->in may be non-NULL > if we have only received a partial request. >=20 > Furthermore, as we overwrite conn->in, the current partial request > will not be transferred. This will result to corrupt the connection. >=20 > Rather than updating conn->in, stash the LU request in lu_status and > let each callback for delayed request to update conn->in when > necessary. >=20 > To keep a sane interface, the code to write the "OK" response the > LU request is moved in xenstored_core.c. >=20 > Fixes: c5ca1404b4 ("tools/xenstore: add support for delaying execution = of a xenstore request") > Fixes: ed6eebf17d ("tools/xenstore: dump the xenstore state for live up= date") > Signed-off-by: Julien Grall With dropping the conn parameter from call_delayed as already mentioned by Luca you can add my: Reviewed-by: Juergen Gross Juergen --------------48FEEF55307F5316D5CEDD88 Content-Type: application/pgp-keys; name="OpenPGP_0xB0DE9DD628BF132F.asc" Content-Transfer-Encoding: quoted-printable Content-Description: OpenPGP public key Content-Disposition: attachment; filename="OpenPGP_0xB0DE9DD628BF132F.asc" -----BEGIN PGP PUBLIC KEY BLOCK----- xsBNBFOMcBYBCACgGjqjoGvbEouQZw/ToiBg9W98AlM2QHV+iNHsEs7kxWhKMjrioyspZKOBy= cWx w3ie3j9uvg9EOB3aN4xiTv4qbnGiTr3oJhkB1gsb6ToJQZ8uxGq2kaV2KL9650I1SJvedYm8O= f8Z d621lSmoKOwlNClALZNew72NjJLEzTalU1OdT7/i1TXkH09XSSI8mEQ/ouNcMvIJNwQpd369y= 9bf IhWUiVXEK7MlRgUG6MvIj6Y3Am/BBLUVbDa4+gmzDC9ezlZkTZG2t14zWPvxXP3FAp2pkW0xq= G7/ 377qptDmrk42GlSKN4z76ELnLxussxc7I2hx18NUcbP8+uty4bMxABEBAAHNHEp1ZXJnZW4gR= 3Jv c3MgPGpnQHBmdXBmLm5ldD7CwHkEEwECACMFAlOMcBYCGwMHCwkIBwMCAQYVCAIJCgsEFgIDA= QIe AQIXgAAKCRCw3p3WKL8TL0KdB/93FcIZ3GCNwFU0u3EjNbNjmXBKDY4FUGNQH2lvWAUy+dnyT= hpw dtF/jQ6j9RwE8VP0+NXcYpGJDWlNb9/JmYqLiX2Q3TyevpB0CA3dbBQp0OW0fgCetToGIQrg0= MbD 1C/sEOv8Mr4NAfbauXjZlvTj30H2jO0u+6WGM6nHwbh2l5O8ZiHkH32iaSTfN7Eu5RnNVUJbv= oPH Z8SlM4KWm8rG+lIkGurqqu5gu8q8ZMKdsdGC4bBxdQKDKHEFExLJK/nRPFmAuGlId1E3fe10v= 5QL +qHI3EIPtyfE7i9Hz6rVwi7lWKgh7pe0ZvatAudZ+JNIlBKptb64FaiIOAWDCx1SzR9KdWVyZ= 2Vu IEdyb3NzIDxqZ3Jvc3NAc3VzZS5jb20+wsB5BBMBAgAjBQJTjHCvAhsDBwsJCAcDAgEGFQgCC= QoL BBYCAwECHgECF4AACgkQsN6d1ii/Ey/HmQf/RtI7kv5A2PS4RF7HoZhPVPogNVbC4YA6lW7Dr= Wf0 teC0RR3MzXfy6pJ+7KLgkqMlrAbN/8Dvjoz78X+5vhH/rDLa9BuZQlhFmvcGtCF8eR0T1v0nC= /nu AFVGy+67q2DH8As3KPu0344TBDpAvr2uYM4tSqxK4DURx5INz4ZZ0WNFHcqsfvlGJALDeE0Lh= ITT d9jLzdDad1pQSToCnLl6SBJZjDOX9QQcyUigZFtCXFst4dlsvddrxyqT1f17+2cFSdu7+ynLm= XBK 7abQ3rwJY8SbRO2iRulogc5vr/RLMMlscDAiDkaFQWLoqHHOdfO9rURssHNN8WkMnQfvUewRz= 80h SnVlcmdlbiBHcm9zcyA8amdyb3NzQG5vdmVsbC5jb20+wsB5BBMBAgAjBQJTjHDXAhsDBwsJC= AcD AgEGFQgCCQoLBBYCAwECHgECF4AACgkQsN6d1ii/Ey8PUQf/ehmgCI9jB9hlgexLvgOtf7PJn= FOX gMLdBQgBlVPO3/D9R8LtF9DBAFPNhlrsfIG/SqICoRCqUcJ96Pn3P7UUinFG/I0ECGF4EvTE1= jnD kfJZr6jrbjgyoZHiw/4BNwSTL9rWASyLgqlA8u1mf+c2yUwcGhgkRAd1gOwungxcwzwqgljf0= N51 N5JfVRHRtyfwq/ge+YEkDGcTU6Y0sPOuj4Dyfm8fJzdfHNQsWq3PnczLVELStJNdapwPOoE+l= otu fe3AM2vAEYJ9rTz3Cki4JFUsgLkHFqGZarrPGi1eyQcXeluldO3m91NK/1xMI3/+8jbO0tsn1= tqS EUGIJi7ox80eSnVlcmdlbiBHcm9zcyA8amdyb3NzQHN1c2UuZGU+wsB5BBMBAgAjBQJTjHDrA= hsD BwsJCAcDAgEGFQgCCQoLBBYCAwECHgECF4AACgkQsN6d1ii/Ey+LhQf9GL45eU5vOowA2u5N3= g3O ZUEBmDHVVbqMtzwlmNC4k9Kx39r5s2vcFl4tXqW7g9/ViXYuiDXb0RfUpZiIUW89siKrkzmQ5= dM7 wRqzgJpJwK8Bn2MIxAKArekWpiCKvBOB/Cc+3EXE78XdlxLyOi/NrmSGRIov0karw2RzMNOu5= D+j LRZQd1Sv27AR+IP3I8U4aqnhLpwhK7MEy9oCILlgZ1QZe49kpcumcZKORmzBTNh30FVKK1Evm= V2x AKDoaEOgQB4iFQLhJCdP1I5aSgM5IVFdn7v5YgEYuJYx37IoN1EblHI//x/e2AaIHpzK5h88N= Eaw QsaNRpNSrcfbFmAg987ATQRTjHAWAQgAyzH6AOODMBjgfWE9VeCgsrwH3exNAU32gLq2xvjpW= nHI s98ndPUDpnoxWQugJ6MpMncr0xSwFmHEgnSEjK/PAjppgmyc57BwKII3sV4on+gDVFJR6Y8ZR= wgn BC5mVM6JjQ5xDk8WRXljExRfUX9pNhdE5eBOZJrDRoLUmmjDtKzWaDhIg/+1Hzz93X4fCQkNV= bVF LELU9bMaLPBG/x5q4iYZ2k2ex6d47YE1ZFdMm6YBYMOljGkZKwYde5ldM9mo45mmwe0icXKLk= pEd IXKTZeKDO+Hdv1aqFuAcccTg9RXDQjmwhC3yEmrmcfl0+rPghO0Iv3OOImwTEe4co3c1mwARA= QAB wsBfBBgBAgAJBQJTjHAWAhsMAAoJELDendYovxMvQ/gH/1ha96vm4P/L+bQpJwrZ/dneZcmEw= Tbe 8YFsw2V/Buv6Z4Mysln3nQK5ZadD534CF7TDVft7fC4tU4PONxF5D+/tvgkPfDAfF77zy2AH1= vJz Q1fOU8lYFpZXTXIHb+559UqvIB8AdgR3SAJGHHt4RKA0F7f5ipYBBrC6cyXJyyoprT10EMvU8= VGi wXvTyJz3fjoYsdFzpWPlJEBRMedCot60g5dmbdrZ5DWClAr0yau47zpWj3enf1tLWaqcsuylW= svi uGjKGw7KHQd3bxALOknAp4dN3QwBYCKuZ7AddY9yjynVaD5X7nF9nO5BjR/i1DG86lem3iBDX= zXs ZDn8R38=3D =3D2wuH -----END PGP PUBLIC KEY BLOCK----- --------------48FEEF55307F5316D5CEDD88-- --U2wKpwtlBTcvdhcInmyT3IOmaaeD89RvH-- --W0ktchS0A5MkVawIUIt96y0jshRyNBOaC Content-Type: application/pgp-signature; name="OpenPGP_signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="OpenPGP_signature" -----BEGIN PGP SIGNATURE----- wsB5BAABCAAjFiEEhRJncuj2BJSl0Jf3sN6d1ii/Ey8FAmDUNRIFAwAAAAAACgkQsN6d1ii/Ey8N Xgf/btaSB1d4+WNRCDFMT9wx4DLH6rTRv2nMw0lh29THuD/Fj2QuALJF+aAa/ofdE8pBXeyY9jsf N7UDHUwsyU4VEdl0LajhlfJsdyCcC6lYeB7SJ0q541yQ8bo3uuZAVfdeMPS9fOAYuE+XRqz6BN0a aQv6jcqmhYSXT9txnCbRdkQ3a+S/YI6oziz4R0cKp0nkiU6EjZQy8wczf9HzYa+mBcbVWtBEcx5u 3QzfMyrUaaHXZDLQt0P5A0fvtDtATHAlg9cjCbCFqnmxkHDVophsdoRSlDIh3DPsMkoCRGpa0u1I pkMUcHYHnVa0KmvM3Teo6POLDP9kKdCv7+N+QZPnpA== =NXMg -----END PGP SIGNATURE----- --W0ktchS0A5MkVawIUIt96y0jshRyNBOaC--