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Sun, 26 Apr 2020 17:18:58 -0400 Received: from luklap ([94.134.180.69]) by smtp.web.de (mrweb003 [213.165.67.108]) with ESMTPSA (Nemesis) id 0MTPjb-1jaguA08sp-00SOp0; Sun, 26 Apr 2020 23:18:45 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1587935925; bh=KlCniyLWMcP5meR1EMfh+9J/dqnOAwFcyGmWU0KJCdg=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:In-Reply-To:References; b=gYBWYSW4FDWXgautvwygWZODJtfrNr0R0Vx6CaKYyt7jdBckgm6yYjwuR5PPRG27O qVThMIi3HQDGf5ukXHqtmRbedo2yBPVNhq5nmBuRKzTQ/CdEKNltoO91ix28MYCx1R EpsIc6rpWutyYobkFedpl1v7wzEyKPnnR2te2lpg= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Date: Sun, 26 Apr 2020 23:18:43 +0200 From: Lukas Straub To: qemu-devel Subject: [PATCH v3 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_/6Yb3bbn4LWPpQk2bs5bYoiY"; protocol="application/pgp-signature"; micalg=pgp-sha512 X-Provags-ID: V03:K1:Y+e1XuD7bAxwd1lKicD6/cC+P9/ujCZvW4cX1iaIzwlQeyBnK6W IKBMQxWOtnu8ulz0AQDdf584Rt+MF2Stj+53kkw/3W52vo4pnyq2hWvswPNL9SZE+A8skyS ohOV47+rjqHoZTSA1HS89//qqoHzWT0CwUComk5GJ3VtZVRLQgFUdaVmLAS0URtriydswMz MvVYXy8Bnp7+DW4308gdg== X-UI-Out-Filterresults: notjunk:1;V03:K0:QSlz2Tr0d38=:Qdg/N1F122ByJ4TikGf1d6 2wrnaqWPxWYZ9B8QUtTC9oJZtd/jrFcQvZMShc/mCmuBdHI1VmxJ4UVL32tPG6PZ8cTmjhr8Y pnqrl3z3PhSYPZBVYuxsij8nupdhm1PxB0RxXJSdxnAKL9QhulmCwhwyKGHQXjbjcvJq7R+xj nErmZ/AyWvFvmfuP/eSJQlnqxVFsNHRbgpHzCVwQ5GsqSNEigxhazbHtEYBNKjVGbPO+MwU/Z uf9nEL3FGgExyJ8XkwHD+waWgyyKPbrfAnI8LUQomCQ2VJ1zBs013cjc4MbR1OGVS1M/ggaeB 0TkU/an/7MrwefSjmQHWTbdXH64fEdfZqcjcNcrQH4hyD/8Jr7kWzZTIrMQR/aI6UVWTEfNEo yMNNCXeSsSnIMdbqI0Gmd7loWJxglzCHdiyjDipzW31jA0XJNfMVA5kcaBitmA3hMQGzk0llo AkRCvvHy1mp472id16cX0VvMYhK818U1UF5JwcN426aqYmFnISDZpK1wZHUSlYfPpREdokWUY 5vULvm2HheNDYWFAN+/qVXDMoZKyngv6CysYvoUnrfUB2Dyc1Mt4lYm7VdKJKc/0Bq25oqTMW IupgyUnnMHFkTUZi1Chs7YjWiCHqw4VVc/ejUvSrApZLfp7+WHidwn+s7E9fmJmCrEUQuv+I7 0ffgtOyHOgDiVOykQffeGFi/oeAJUQHBTHgK7uo/8SG7pdYRwPiAxQz3qdQXNasPNbP0Bod5g OWmo/QSe8GkV447anime1ltUOxcKlAK0kqIGdI+0SHp9FZgtLt4m+YesUQQ7KaEu1s8Oc7KjR kxYZe42hgIxUwgOOMu1naPUBZVukpIQ71drnbhbFYJBKZtDS/U+0cfwkeE+5iv8F52ifYw8RE Fsub1HCkhNUu6iuG9Tk0fq133i3tcc4pq8tCxvrLIxDGN68M7BMcYdugF5QZwoYe1dIWTqt2B kvZ+tr0DMDN8OB8V3zNXN5Fxzz5TyX/QgTown4A2ZMVfuRXchupsiIpNIBXN+3XvvzgfVyLXg RwDxnUQUIUv6zKumuN+tLPP5WP1MFqCo+WdWNZOqcNtL2wjGZzqRDmhmZl5tpHyrpv6HvYAc2 wfln/IvGhQdujWuiF3QIKFcBr7NOt9GRL3XkYmO5chEnn3DP36m5vBgDJbPhpIlJaz4jBe9r+ iAc37i83AFmLBODgflbzUnKu/4qj99EhPoM+BVGyBT9bR+vE1vWDsBUH0AFA1A18K2CmCYEmz 08wmAp72Es6tMlGbz Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; 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 = 2020/04/26 15:25:56 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] X-Received-From: 212.227.15.4 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-Zoho-Virus-Status: 1 X-ZohoMail-DKIM: fail (Header signature does not verify) --Sig_/6Yb3bbn4LWPpQk2bs5bYoiY Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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_/6Yb3bbn4LWPpQk2bs5bYoiY Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEg/qxWKDZuPtyYo+kNasLKJxdslgFAl6l+rMACgkQNasLKJxd sliATQ//Qi/V6wtWk/Lva94UlZTax5WxkKP6uaP0QoHMXBMZ7oTXwt84BHsy+Srh 5oNS6G8m9MX1V+9kpZ+mZcdepjcDvwP0my6Lr2vbZzBSA7MXGRA5xmg3kxcCDn96 zp1EysuuLNZjHRBi2cceRsZ0FuVqGrYQJsEFzOvkRzfSr0i5D1WiVB0EEwiuNdHK b+5tk2O2EReBUAAbShAHut5/mevrGMBHi+rMdZyYulnHwYN3exKLnyZ1JTpDUZIs 6GRXYdC0JH0nGTRRhuUnVxLFrdZu2RTcS7WPSk+eI9gqFr5o1rTgiWLtCJ/HB/HK jfLCrpoVT3kfshI7oYtvCMPPbvd1FETXpDh4ucy4yjeU3PzVjevqQuQ+YyOIFqh5 qsex+3JZZpc7AdRSt9SKonSYgTQulWgonI2RvSmv4YIiN1FYcSW//FdN3UNoEXs3 078KbTQg0/j4d7/oz4WRhktkNrnlyBmM2WunBBUFRMV8GfizO6NJvAShILd4qT49 W3Vqfvo9hpndYnXlgl5xSGRpHQLAxQNJjuTKPnrmsRUC4iphczCIj/dKI4w4D5pg VtG9hhrj4yd6l5Tx2CHetp0xO972PUGi+OsVHhrHgwFUlhH135R69CDVyz0SFsqu Ojqn+29NXM2DejOMaJAfenlErlGVfYlHxhLYnTeiPt83bO4dwWQ= =ru6O -----END PGP SIGNATURE----- --Sig_/6Yb3bbn4LWPpQk2bs5bYoiY--