From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B703C83003 for ; Wed, 29 Apr 2020 08:02:52 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 43FDB2073E for ; Wed, 29 Apr 2020 08:02:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=web.de header.i=@web.de header.b="eEm3HNBo" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 43FDB2073E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=web.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:56754 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jThgB-0003R7-7J for qemu-devel@archiver.kernel.org; Wed, 29 Apr 2020 04:02:51 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49848) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jThXW-0006IG-Gi for qemu-devel@nongnu.org; Wed, 29 Apr 2020 03:57:32 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.90_1) (envelope-from ) id 1jThVK-0003p5-0e for qemu-devel@nongnu.org; Wed, 29 Apr 2020 03:53:54 -0400 Received: from mout.web.de ([212.227.15.3]:57731) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jThVJ-0003ke-7D for qemu-devel@nongnu.org; Wed, 29 Apr 2020 03:51:37 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=web.de; s=dbaedf251592; t=1588146679; bh=zKSI8LSS/bDC25M86GX/4Uoa7Sze0fUwIYQXpTiGb4w=; h=X-UI-Sender-Class:Date:From:To:Cc:Subject:In-Reply-To:References; b=eEm3HNBoRRxlmQTfXo00shUE0dhndwi5ZwEOZ9yJZ+ZtZQrXt/i2zJIEevqo3oX0w S2LJS28TF4swRHwvhqJ5DykEVTs3rv38uFiI0OrQdAJ5EfWOUavwIvuLJJccMLf1et a9br2eweIByEc0iqBI+9mdQnH6blItM8QtUNhFX8= X-UI-Sender-Class: c548c8c5-30a9-4db5-a2e7-cb6cb037b8f9 Received: from luklap ([89.247.255.32]) by smtp.web.de (mrweb006 [213.165.67.108]) with ESMTPSA (Nemesis) id 1Mfc8y-1iwpaR06lU-00fxI9; Wed, 29 Apr 2020 09:51:19 +0200 Date: Wed, 29 Apr 2020 09:51:09 +0200 From: Lukas Straub To: "Zhang, Chen" Subject: Re: [PATCH v3 3/6] net/colo-compare.c: Fix deadlock in compare_chr_send Message-ID: <20200429095109.200f2b5b@luklap> In-Reply-To: References: <6f3906393aaaf0adf21d45a5bf7a41536c7de205.1587935686.git.lukasstraub2@web.de> <20200427092219.3af2a348@luklap> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/U_OzEJjOf=2HFiHY6w1YPBa"; protocol="application/pgp-signature"; micalg=pgp-sha512 X-Provags-ID: V03:K1:svRcFnU9oJkRKiVOGEk28drcxqfxjl3BK43gTEK00vlxewDQpbm Ken+sdgdgz42Fu5ZnV/HdBqYxVvjkd25wIgOopldyANqfF1jn/lhnyujwwG5tfzND0APtaZ Dz7VYmhpaEdrcUyhSa+k7ng999Zrne4+HcDKjQe1CRzuopWNgBLX3L/xKJLVnaV+Cnso7Bi nr4ENG7aeLyMdCNp0Tx1A== X-UI-Out-Filterresults: notjunk:1;V03:K0:WuMZMBTmiEc=:P4PaKxXMUCBqhPF+Tf/NZ7 Hy44Dq63eA+PSolVQFnJb4h/G6rbO+QvxMOWXBrBZWXvVtAPwnLfeygGzjISs5fJRp+drgdLV 8oHf4YEmA9M7jGLr2KL6ajuHYE1Z1UPHjSH05GJzZWW1+OlkS7OOhEJpqDQAs1kxkodeL2cxc 63vsSRgF/2hzVONMw82e5uuDgcWR345LQT7YKXYrDMIrvZgHkBFMolIlnRRcRgYMVCfCE+YDC cMuEpd6Llk9Xiu+0IxTOFdHTkqIlKIzlw3ZgGwbyD5DEQQksS+l8bWGNH/XT8qGCt6v4VSGI5 cZBJiByI2GL5vTUf2F9TdvCqgD8xtBAfWMF3XqUI9iypzcpJHTxmjB1iaP+FPlVJE5fz6yOjN Uz/rGjmZ2iUpX33rUamhr8E/7lPGMj/ffcU2QyCic2c7uSRq76C/jj9Z9hK71L0BsomK5TVIq HXDPnBiEnYKXhLLvkOH58nbwK5pRSmZe5ZtJ5HbqFlVnA6QbcBGoDXoNz4oxw4PsG8in0Q19L Uu9cQp5SNgr0x7qsv7Vf+39+ISKuHVUpyo6Bs1Ss7y+A3tKZoXp8mCoZPeG7LQ96xSiWD0eLy 3Y22bIQzgVgKT9Mic2YrfM2lscH2pXri5JYrnCDb0RPzdWRjlhGnRHfN9/YJbqHkc1XHqQrLD nsoeRgfbHwOzGp3zRWYi+6S3jhSBMp9/WGpE6O1RVe7FHeUjZbPo+evCqiFbrwVTwIt9bV+L5 9JurmmbdOewPrIEcMyIfYrw0gnAXQIDbg1yvcsMjolYHhKS4IuD+P0Jj8A89LC3aAJ5Ib3SRW g25bEAFGg2XDr15OljYMw50m7wXzsD40JqXVPdvK2Np4LwR/H/om8OwUeqstYxvP9wXoPDIMn 4O+XkRs2AIGDN9n75H3fXn9JFwEK6MZHGDldrt4OzMhNEJGNz/cJvuHdDp4oaCATmFyOn/HDP BSHL7lQW1bv1v3Mx0vfxT/aL1uiupTS0UHJRo24sPGgvILEkdRCchwLqGytqT9Y95QHZK6OWz NviIqQjXJiqHlFuBBbqrlVb1/mUeJqREj9JJxLjV6PAKu/rtd8zdJ4vOtUZ/wgRZf+opp5ST3 3si/kkWv9zOK6gR73lCM61aZkZ7kIIiygvMh/X2G9ocWEn4FZO3zgpVYBYD4qhel8pzgsCcFy sh1KktJklCmPRv3kEiKua6fcB1bqnDR/ZDdNjLQ/H6XVQjVaRVckDtVYZOAnnhUmqwrzayOC3 WlXuBiHcbuRKDrUHx Received-SPF: pass client-ip=212.227.15.3; envelope-from=lukasstraub2@web.de; helo=mout.web.de X-detected-operating-system: by eggs.gnu.org: First seen = 2020/04/29 03:51:34 X-ACL-Warn: Detected OS = Linux 3.11 and newer X-Received-From: 212.227.15.3 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: =?UTF-8?B?TWFyYy1BbmRyw6k=?= Lureau , Jason Wang , qemu-devel , Li Zhijian , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" --Sig_/U_OzEJjOf=2HFiHY6w1YPBa Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Wed, 29 Apr 2020 05:37:17 +0000 "Zhang, Chen" wrote: > > -----Original Message----- > > From: Lukas Straub > > Sent: Monday, April 27, 2020 3:22 PM > > To: Zhang, Chen > > Cc: qemu-devel ; Li Zhijian > > ; Jason Wang ; Marc- > > Andr=C3=A9 Lureau ; Paolo Bonzini > > > > Subject: Re: [PATCH v3 3/6] net/colo-compare.c: Fix deadlock in > > compare_chr_send > >=20 > > On Mon, 27 Apr 2020 03:36:57 +0000 > > "Zhang, Chen" wrote: > > =20 > > > > -----Original Message----- > > > > From: Lukas Straub > > > > Sent: Monday, April 27, 2020 5:19 AM > > > > To: qemu-devel > > > > Cc: Zhang, Chen ; Li Zhijian > > > > ; Jason Wang ; Marc- > > > > Andr=C3=A9 Lureau ; Paolo Bonzini > > > > > > > > Subject: [PATCH v3 3/6] net/colo-compare.c: Fix deadlock in > > > > compare_chr_send > > > > > > > > The chr_out chardev is connected to a filter-redirector running in > > > > the main loop. qemu_chr_fe_write_all might block here in > > > > compare_chr_send if the (socket-)buffer is full. > > > > If another filter-redirector in the main loop want's to send data to > > > > chr_pri_in it might also block if the buffer is full. This leads to > > > > a deadlock because both event loops get blocked. > > > > > > > > Fix this by converting compare_chr_send to a coroutine and putting > > > > the packets in a send queue. Also create a new function > > > > notify_chr_send, since that should be independend. > > > > > > > > Signed-off-by: Lukas Straub > > > > --- > > > > net/colo-compare.c | 173 ++++++++++++++++++++++++++++++++++--- =20 > > ---- =20 > > > > ---- > > > > 1 file changed, 130 insertions(+), 43 deletions(-) > > > > > > > > diff --git a/net/colo-compare.c b/net/colo-compare.c index > > > > 1de4220fe2..ff6a740284 100644 > > > > --- a/net/colo-compare.c > > > > +++ b/net/colo-compare.c > > > > @@ -32,6 +32,9 @@ > > > > #include "migration/migration.h" > > > > #include "util.h" > > > > > > > > +#include "block/aio-wait.h" > > > > +#include "qemu/coroutine.h" > > > > + > > > > #define TYPE_COLO_COMPARE "colo-compare" > > > > #define COLO_COMPARE(obj) \ > > > > OBJECT_CHECK(CompareState, (obj), TYPE_COLO_COMPARE) @@ - =20 > > 77,6 =20 > > > > +80,20 @@ static int event_unhandled_count; > > > > * |packet | |packet + |packet | |packet= + > > > > * +--------+ +--------+ +--------+ +------= --+ > > > > */ > > > > + > > > > +typedef struct SendCo { > > > > + Coroutine *co; > > > > + GQueue send_list; > > > > + bool done; > > > > + int ret; > > > > +} SendCo; > > > > + > > > > +typedef struct SendEntry { > > > > + uint32_t size; > > > > + uint32_t vnet_hdr_len; > > > > + uint8_t buf[]; > > > > +} SendEntry; > > > > + > > > > typedef struct CompareState { > > > > Object parent; > > > > > > > > @@ -91,6 +108,7 @@ typedef struct CompareState { > > > > SocketReadState pri_rs; > > > > SocketReadState sec_rs; > > > > SocketReadState notify_rs; > > > > + SendCo sendco; > > > > bool vnet_hdr; > > > > uint32_t compare_timeout; > > > > uint32_t expired_scan_cycle; > > > > @@ -126,8 +144,11 @@ enum { > > > > static int compare_chr_send(CompareState *s, > > > > const uint8_t *buf, > > > > uint32_t size, > > > > - uint32_t vnet_hdr_len, > > > > - bool notify_remote_frame); > > > > + uint32_t vnet_hdr_len); > > > > + > > > > +static int notify_chr_send(CompareState *s, > > > > + const uint8_t *buf, > > > > + uint32_t size); > > > > > > > > static bool packet_matches_str(const char *str, > > > > const uint8_t *buf, @@ -145,7 +166,7 > > > > @@ static void notify_remote_frame(CompareState *s) > > > > char msg[] =3D "DO_CHECKPOINT"; > > > > int ret =3D 0; > > > > > > > > - ret =3D compare_chr_send(s, (uint8_t *)msg, strlen(msg), 0, tr= ue); > > > > + ret =3D notify_chr_send(s, (uint8_t *)msg, strlen(msg)); > > > > if (ret < 0) { > > > > error_report("Notify Xen COLO-frame failed"); > > > > } > > > > @@ -271,8 +292,7 @@ static void > > > > colo_release_primary_pkt(CompareState > > > > *s, Packet *pkt) > > > > ret =3D compare_chr_send(s, > > > > pkt->data, > > > > pkt->size, > > > > - pkt->vnet_hdr_len, > > > > - false); > > > > + pkt->vnet_hdr_len); > > > > if (ret < 0) { > > > > error_report("colo send primary packet failed"); > > > > } > > > > @@ -699,63 +719,123 @@ static void colo_compare_connection(void > > > > *opaque, void *user_data) > > > > } > > > > } > > > > > > > > -static int compare_chr_send(CompareState *s, > > > > - const uint8_t *buf, > > > > - uint32_t size, > > > > - uint32_t vnet_hdr_len, > > > > - bool notify_remote_frame) > > > > +static void coroutine_fn _compare_chr_send(void *opaque) > > > > { > > > > + CompareState *s =3D opaque; > > > > + SendCo *sendco =3D &s->sendco; > > > > int ret =3D 0; > > > > - uint32_t len =3D htonl(size); > > > > > > > > - if (!size) { > > > > - return 0; > > > > - } > > > > + while (!g_queue_is_empty(&sendco->send_list)) { > > > > + SendEntry *entry =3D g_queue_pop_tail(&sendco->send_list); > > > > + uint32_t len =3D htonl(entry->size); > > > > > > > > - if (notify_remote_frame) { > > > > - ret =3D qemu_chr_fe_write_all(&s->chr_notify_dev, > > > > - (uint8_t *)&len, > > > > - sizeof(len)); > > > > - } else { > > > > ret =3D qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)&len= , =20 > > sizeof(len)); =20 > > > > - } > > > > > > > > - if (ret !=3D sizeof(len)) { > > > > - goto err; > > > > - } > > > > + if (ret !=3D sizeof(len)) { > > > > + g_free(entry); > > > > + goto err; > > > > + } > > > > > > > > - if (s->vnet_hdr) { > > > > - /* > > > > - * We send vnet header len make other module(like filter-r= edirector) > > > > - * know how to parse net packet correctly. > > > > - */ > > > > - len =3D htonl(vnet_hdr_len); > > > > + if (s->vnet_hdr) { > > > > + /* > > > > + * We send vnet header len make other module(like filt= er- =20 > > redirector) =20 > > > > + * know how to parse net packet correctly. > > > > + */ > > > > + len =3D htonl(entry->vnet_hdr_len); > > > > > > > > - if (!notify_remote_frame) { > > > > ret =3D qemu_chr_fe_write_all(&s->chr_out, > > > > (uint8_t *)&len, > > > > sizeof(len)); > > > > + > > > > + if (ret !=3D sizeof(len)) { > > > > + g_free(entry); > > > > + goto err; > > > > + } > > > > } > > > > > > > > - if (ret !=3D sizeof(len)) { > > > > + ret =3D qemu_chr_fe_write_all(&s->chr_out, > > > > + (uint8_t *)entry->buf, > > > > + entry->size); > > > > + > > > > + if (ret !=3D entry->size) { > > > > + g_free(entry); > > > > goto err; > > > > } > > > > + > > > > + g_free(entry); > > > > } > > > > > > > > - if (notify_remote_frame) { > > > > - ret =3D qemu_chr_fe_write_all(&s->chr_notify_dev, > > > > - (uint8_t *)buf, > > > > - size); > > > > - } else { > > > > - ret =3D qemu_chr_fe_write_all(&s->chr_out, (uint8_t *)buf,= size); > > > > + sendco->ret =3D 0; > > > > + goto out; > > > > + > > > > +err: > > > > + while (!g_queue_is_empty(&sendco->send_list)) { > > > > + SendEntry *entry =3D g_queue_pop_tail(&sendco->send_list); > > > > + g_free(entry); > > > > } > > > > + sendco->ret =3D ret < 0 ? ret : -EIO; > > > > +out: > > > > + sendco->co =3D NULL; > > > > + sendco->done =3D true; > > > > + aio_wait_kick(); > > > > +} > > > > + > > > > +static int compare_chr_send(CompareState *s, > > > > + const uint8_t *buf, > > > > + uint32_t size, > > > > + uint32_t vnet_hdr_len) { > > > > + SendCo *sendco =3D &s->sendco; > > > > + SendEntry *entry; > > > > + > > > > + if (!size) { > > > > + return 0; > > > > + } > > > > + > > > > + entry =3D g_malloc(sizeof(SendEntry) + size); > > > > + entry->size =3D size; > > > > + entry->vnet_hdr_len =3D vnet_hdr_len; > > > > + memcpy(entry->buf, buf, size); > > > > + g_queue_push_head(&sendco->send_list, entry); > > > > + > > > > + if (sendco->done) { > > > > + sendco->co =3D qemu_coroutine_create(_compare_chr_send, s); > > > > + sendco->done =3D false; > > > > + qemu_coroutine_enter(sendco->co); > > > > + if (sendco->done) { > > > > + /* report early errors */ > > > > + return sendco->ret; > > > > + } > > > > + } > > > > + > > > > + /* assume success */ > > > > + return 0; > > > > +} > > > > + =20 > > > > > > Why not make notify_chr_send same as compare_chr_send? =20 > >=20 > > Hello, > > The notify chardev_dev is not affected from this deadlock issue and is > > independent from the outdev chardev. So it wouldn't make sense for noti= fy > > messages to wait in the queue if the outdev chardev is blocked. Also, t= he > > code is easier to understand this way. > > =20 >=20 > Yes, I means maybe the deadlock issue will also occur in Xen COLO side, w= e can resolve the potential problem here. Ok, I will change it in the next version. > Thanks > Zhang Chen >=20 > > Regards, > > Lukas Straub > > =20 > > > Thanks > > > Zhang Chen > > > =20 > > > > +static int notify_chr_send(CompareState *s, > > > > + const uint8_t *buf, > > > > + uint32_t size) { > > > > + int ret =3D 0; > > > > + uint32_t len =3D htonl(size); > > > > + > > > > + ret =3D qemu_chr_fe_write_all(&s->chr_notify_dev, > > > > + (uint8_t *)&len, > > > > + sizeof(len)); > > > > + > > > > + if (ret !=3D sizeof(len)) { > > > > + goto err; > > > > + } > > > > + > > > > + ret =3D qemu_chr_fe_write_all(&s->chr_notify_dev, > > > > + (uint8_t *)buf, > > > > + size); > > > > > > > > if (ret !=3D size) { > > > > goto err; > > > > } > > > > > > > > return 0; > > > > - > > > > err: > > > > return ret < 0 ? ret : -EIO; > > > > } > > > > @@ -1062,8 +1142,7 @@ static void > > > > compare_pri_rs_finalize(SocketReadState *pri_rs) > > > > compare_chr_send(s, > > > > pri_rs->buf, > > > > pri_rs->packet_len, > > > > - pri_rs->vnet_hdr_len, > > > > - false); > > > > + pri_rs->vnet_hdr_len); > > > > } else { > > > > /* compare packet in the specified connection */ > > > > colo_compare_connection(conn, s); @@ -1093,7 +1172,7 @@ > > > > static void compare_notify_rs_finalize(SocketReadState *notify_rs) > > > > if (packet_matches_str("COLO_USERSPACE_PROXY_INIT", > > > > notify_rs->buf, > > > > notify_rs->packet_len)) { > > > > - ret =3D compare_chr_send(s, (uint8_t *)msg, strlen(msg), 0= , true); > > > > + ret =3D notify_chr_send(s, (uint8_t *)msg, strlen(msg)); > > > > if (ret < 0) { > > > > error_report("Notify Xen COLO-frame INIT failed"); > > > > } > > > > @@ -1199,6 +1278,9 @@ static void > > > > colo_compare_complete(UserCreatable > > > > *uc, Error **errp) > > > > > > > > QTAILQ_INSERT_TAIL(&net_compares, s, next); > > > > > > > > + s->sendco.done =3D true; > > > > + g_queue_init(&s->sendco.send_list); > > > > + > > > > g_queue_init(&s->conn_list); > > > > > > > > qemu_mutex_init(&event_mtx); > > > > @@ -1224,8 +1306,7 @@ static void colo_flush_packets(void *opaque, > > > > void > > > > *user_data) > > > > compare_chr_send(s, > > > > pkt->data, > > > > pkt->size, > > > > - pkt->vnet_hdr_len, > > > > - false); > > > > + pkt->vnet_hdr_len); > > > > packet_destroy(pkt, NULL); > > > > } > > > > while (!g_queue_is_empty(&conn->secondary_list)) { @@ -1281,6 > > > > +1362,11 @@ static void colo_compare_finalize(Object *obj) > > > > CompareState *s =3D COLO_COMPARE(obj); > > > > CompareState *tmp =3D NULL; > > > > > > > > + AioContext *ctx =3D iothread_get_aio_context(s->iothread); > > > > + aio_context_acquire(ctx); > > > > + AIO_WAIT_WHILE(ctx, !s->sendco.done); > > > > + aio_context_release(ctx); > > > > + > > > > qemu_chr_fe_deinit(&s->chr_pri_in, false); > > > > qemu_chr_fe_deinit(&s->chr_sec_in, false); > > > > qemu_chr_fe_deinit(&s->chr_out, false); @@ -1305,6 +1391,7 @@ > > > > static void colo_compare_finalize(Object *obj) > > > > g_queue_foreach(&s->conn_list, colo_flush_packets, s); > > > > > > > > g_queue_clear(&s->conn_list); > > > > + g_queue_clear(&s->sendco.send_list); > > > > > > > > if (s->connection_track_table) { > > > > g_hash_table_destroy(s->connection_track_table); > > > > -- > > > > 2.20.1 =20 > > > =20 >=20 --Sig_/U_OzEJjOf=2HFiHY6w1YPBa Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQIzBAEBCgAdFiEEg/qxWKDZuPtyYo+kNasLKJxdslgFAl6pMe0ACgkQNasLKJxd sljlhw//f8TPTl2R3Q1CvhsJtMMXLVZ3jysHmXN6TcjnVn1SMq06XbAUl7Ay23pd tTw48mpe+EZp2+E43Vq6Q/UUnNTkD+mtwsvqcQhEqVINkRta0MWslvVsqzlUNQsw W2RX3nL7gCv1sjiV09cmS8zi+B7Lav9O1VaPgSO5C5oNXKp4ExuEmF5Vom20mxkx dJLJrbJ/UVGitdlsZlYZF0+x6JT059pc/5b2q6Ay6oxTRJ5sF0f17tOIRMgVucPw ZiFPm8zFqpW9Dyy0PpqlUM7159q37mKX50++qTG6Ew9qh7e/j3pD4Ugh0JsWL3Be jhQ0XRY4vZhvz2MubYe9OfF5jmd35xQG7USzyN+mYRDAMGYaDE3EFrm5hH+W/GCc AJlqoKebpm9zmHsRxEHPboxxHbVCb7iW7NkxIuNPf7iHHGCzTT7+cLxljILpQy2q FDKjPH3NzA6nhuQCfvUwZWjNc2TwAcvIfz2G0yUIyw5lehPTcQJg18SG1F/VqWDt uJJBicu41r2VEZ5htsT3WHffS1osSAu8K2MDAjD7ZoibvAEn3qagYEMd/00zvJL9 gRk53mjpuBiIvOlh1DOwZHdgJlfIoty5/E70JM9WPtMv0qpV0WatRgDbXKKM0Fxf EHtGTk3aejDfwdHLVbkN0x4wFFlB2hrlYC2x5qw+yJb/HmTC9AY= =Gfqx -----END PGP SIGNATURE----- --Sig_/U_OzEJjOf=2HFiHY6w1YPBa--