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b=r1t/iVmqBUm8evnaVtQodqdIi6IGNit+KdyXnNH4OtE+gl9cM6PVWnfHi81kxi2Yd pg1zODwoUXs5vZNOScoNORIEo1SQ3XfG4motN785xqc+iChGR0nXqIBKE6Ae8g8DmV 0YPta7l3jrKhx2rn/1SI3eimypKWDlJAnpAIxB7c= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from luklap ([87.123.206.27]) by smtp.web.de (mrweb002 [213.165.67.108]) with ESMTPSA (Nemesis) id 0MJCEk-1jSnAu41Xe-002pe0; Mon, 04 May 2020 12:28:03 +0200 Date: Mon, 4 May 2020 12:28:01 +0200 From: Lukas Straub To: qemu-devel Subject: [PATCH v4 1/6] net/colo-compare.c: Create event_bh with the right AioContext Message-ID: In-Reply-To: References: MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/s6q0XVhHqm25NT3YOV5nWfw"; protocol="application/pgp-signature"; micalg=pgp-sha512 X-Provags-ID: V03:K1:A77I2kLsIrVU50R5laHuCTeEg+6N9tbxM+JO6wyoOcbgOIjoKFV tnFBFakp0GRln9b+ZH8KarQmRBcpe1a3mGSOOOpMFRSXAu9d5dr+W4mRGKU93t5FAS6/1Rs lKXvSZ3VEEZNbuGIlJI6vW+xwZ+iDf0WBxwhtPgUIpjtIx9OXTAj+1B7zve8yJdhHMZ0C7F 7oSFphdaMNSbKVXFd4Q3Q== X-UI-Out-Filterresults: notjunk:1;V03:K0:Gcz4lEaoG1I=:Toqs8isLPKIFtfp9TQ/Li/ c2RaZ1HD9wVECJzfnKvOG9DnB6c+QLXDm4UnhBmqJdEjWjtryC/nHqvGunxAK3jfZcQeSxG0n 2bLndZGhhq+hIpuCZIUz9HeUKkAYKzFbtQrkFBwQLGxc+0KGWWmxhrzTDFs2D4mpTyt/0+k0F T7oLlLdJ7u/5JqwXmMg7bViyXb+73RJy0M7egD215YzvL+d8Ax6rSEijz08QGmrR1GwuTvNk5 Xy7p1NIdFJ1FZLlqv1R1BJnMR5DU0AEiSIjpIZ64xD683DKpmsJr0ql7PmuvZjCeGKvHEii8S 4x0b8XhMdmFKy3NUZR7X3IYJGasFW9Fnib1FVhCR4r4Cbdjr9ElXpZ6axIA8iyEmFPxTvCJzA /zfCfEC2BSB33xr1furAlwrWwXJYAhz5pdlJIaQt35RzC1NkoprpOyPco8RjUKyn5shdiT2mu pP2YBi106wYyvxqZrkOyqca9/z0c7weL/eieTIJduUnW6Sh6Eo5ek5vu1qaIa9lQJHa4SjoMm um1D+/XK0/5ae1ysM+1ww5JEa4PPZIJ9zl1L8AgfB39f2K+VguIdvVy5x4+Rl1/QKofjBYk5q mZyqodno7+zB107jLwHQ2MtsrpFEMFywzwNNJ58x1KWbjMC28CnFhDARS6WURGkKO7zfu67Wn 1Sj0geq+SKO9/e3uj0hKahhLmsXXkFMsc80ShBF3K4b31kARaubjDRZ2q2GQAyiIgyTMddk0t 1tweBga2wKyeIqQW9ZMjUGOvVTBSzbORBOPW0AFcShncJjA6LvVHRGDAU09rZ2gzaIyHDf2Wl fNuB9vdisQ6wPf3aXWAFvP9646eiNfji6K9FZgGgn1md8syla7rcg0ty9vYE+Xo+cjOWPk0mP +g5P8Z8PZflBZOO8St5f5KAeLM3NdIeFOPr2WHW7zlEWLamVYTrZ6x3kOWH/m5IigjtSBXsjZ zvw1NUB+N9lGaBVx/VWqNqwH+f3/1v1F+4pspIPIRomXTM+8sr8qMWrYmJhQ0XstED40zPy4z XSHi2oxpsZW6En6vFWZiSnUMslKuiWJxX0YlauSvtvmO7n53cXBkiGf90r/UFOu/m94mDIt7J 1fSPZKWYqWHsn06NH9MNADL37CuyKnVf44vVHTi0MNoVUBSB4hbamjXLLCzqu/iV9cq+wpdYx yBnVYkidj3Utxceivf0CyNjJAu5fQBeE0aFEk6hxh9fKqWch4eUHHKibDDY2A9TO3pp1NDLqB KhX2IhXG6ltubtSrc Received-SPF: pass client-ip=212.227.15.4; envelope-from=lukasstraub2@web.de; helo=mout.web.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/05/04 06:28:16 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Spam_score_int: -24 X-Spam_score: -2.5 X-Spam_bar: -- X-Spam_report: (-2.5 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: Zhang Chen , Jason Wang , Paolo Bonzini , Li Zhijian , =?UTF-8?B?TWFyYy1BbmRyw6k=?= Lureau Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --Sig_/s6q0XVhHqm25NT3YOV5nWfw Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable qemu_bh_new will set the bh to be executed in the main loop. This causes crashes as colo_compare_handle_event assumes that it has exclusive access the queues, which are also concurrently accessed in the iothread. Create the bh with the AioContext of the iothread to fulfill these assumptions and fix the crashes. This is safe, because the bh already takes the appropriate locks. Signed-off-by: Lukas Straub Reviewed-by: Zhang Chen Reviewed-by: Derek Su Tested-by: Derek Su --- net/colo-compare.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/net/colo-compare.c b/net/colo-compare.c index 10c0239f9d..1de4220fe2 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -890,6 +890,7 @@ static void colo_compare_handle_event(void *opaque) =20 static void colo_compare_iothread(CompareState *s) { + AioContext *ctx =3D iothread_get_aio_context(s->iothread); object_ref(OBJECT(s->iothread)); s->worker_context =3D iothread_get_g_main_context(s->iothread); =20 @@ -906,7 +907,7 @@ static void colo_compare_iothread(CompareState *s) } =20 colo_compare_timer_init(s); - s->event_bh =3D qemu_bh_new(colo_compare_handle_event, s); + s->event_bh =3D aio_bh_new(ctx, colo_compare_handle_event, s); } =20 static char *compare_get_pri_indev(Object *obj, Error **errp) --=20 2.20.1 --Sig_/s6q0XVhHqm25NT3YOV5nWfw Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEg/qxWKDZuPtyYo+kNasLKJxdslgFAl6v7jEACgkQNasLKJxd sljHBw/8DAicldDJrVDdgKMBKAJMYwACttCjljfnSd2/jqj6BxvhrHH3qMilPeBN mtrzWxU3A04vuMB7bEpFDqvjMj3SxJq30UZ38kYv2R4sIAO3TKJmWzbFk9s7Jm3i QuExC/U60VmryFzBeobaxQlCFOfqqKbU136jJzTr4WK8m9Fpr/og3C4y/GlKAq7i +EZOZZtqC2qk7wnCt2OwM7y93KZje3Ba8AvoaPATsXn36gxtzPChDIt8WmKT5x0F bhmam5E1hp7oZ6kyiohI6A2mJKWN5r/HZCWPsYE22oyTQ5IN8ld1gZZyolLIDx67 nl8p4UeNlQWxTQfwpSFZij9QrXHj2/3R3cZKzsoDJ5x+/f+Lh7xhOZemNRvWLxFN YVAOPXk3DmD6SFP7HyYy+PiskSVhoUg+DfCJnJ677AdKV40GAVk+wrzs5gAUiYwe jjcF+jXZwq1UZxDQY4Vedm4tJMTyUMaxZ/PCGNPHtycxxGLe+KCq3slWJI7NjBEO Giwdgd2GK6F68f9y5Yo7C+7PsCfAuf3nATnkoojwm8zGsMoENp346qZU+uWx+DCJ XllocXUq64LMkplauAyqAvs13k/bE/Pl7fWNlI1KZCZWcjDyftdfUIUxyBHBGZpE oV7WQTYKkThLk9ZqwNo/Sl6xa3hSdU7M5zkzz2YMexKLxIEKJoc= =6Cs4 -----END PGP SIGNATURE----- --Sig_/s6q0XVhHqm25NT3YOV5nWfw--