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[202.39.79.13]) by smtp.gmail.com with ESMTPSA id l15sm360884pgk.59.2020.04.09.19.01.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Apr 2020 19:01:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=qnap.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references; bh=mMXD71z/Ccdb4LRFHGzamc1anIpuoOHtQv1un+B2Q3s=; b=LSYgdn4BkDz5auHKMqWh5BsByo1BAsYUurqTQoBlufnvW5jiuLTMPB7kWJ/mwy7i4o seH6FrpMa+4PlcDa+lhKQwokN/v8y4tlFTQSYcGphgi2E71rZubCd9WNas/1RmmSZo/T WVxnHC4ytFK4+Dgq/UjCrrPU2Vxp+PyR+aXec= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references; bh=mMXD71z/Ccdb4LRFHGzamc1anIpuoOHtQv1un+B2Q3s=; b=Kl5wloc8qBl+TC6iZm5/o+1HoBpmkn3FQixRfMoArNiUXIA/HsUxeDtpl4MUFuGB3M uIIGeZ+EsdiTDdTO4njOXnZke5HndsfxlstCC6MZyFAwLjSRze8lm/4aKZ/lTxaprono sUq/PTSv0AU8PwsnFykitmV2knJG8HzJAGl95+wcgTCXMz0hfJr1a5k4zoUCS5tCXdh/ 0I1WzZshAL0HT36MsdQlTip/DIVx8IJGHWldV1esAQ9Y5g1sIzRYrQZxL3NXgeczHcHp XnjuRsuiowu/gPezy/VOiWPuZ0q+XJ+4T/vAQyIn94+1zIIkdVE1I7hdG0sGamjVbbcC Qd4w== X-Gm-Message-State: AGi0PuadVYF5SnMk+J8YmLdrD+aGUBimMQnuTqwy38FHCpRXAOTbwZwX p6Q2fO7Cv0EPkQrPr8aB3gQSTswBVUI= X-Google-Smtp-Source: APiQypKwOrjcx6B1rIhDTKoX0s0euikQbBr1jreaUhbrwV3CdSzYONnlmkl97VwRM/nXr53JyPxj6Q== X-Received: by 2002:a17:902:a985:: with SMTP id bh5mr2472343plb.163.1586484076386; Thu, 09 Apr 2020 19:01:16 -0700 (PDT) From: Derek Su To: qemu-devel@nongnu.org Subject: [PATCH v5 1/1] colo-compare: Fix memory leak in packet_enqueue() Date: Fri, 10 Apr 2020 10:00:56 +0800 Message-Id: <20200410020056.12104-2-dereksu@qnap.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200410020056.12104-1-dereksu@qnap.com> References: <20200410020056.12104-1-dereksu@qnap.com> X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 2607:f8b0:4864:20::1044 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: lizhijian@cn.fujitsu.com, chyang@qnap.com, Derek Su , jasowang@redhat.com, ctcheng@qnap.com, chen.zhang@intel.com, jwsu1986@gmail.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" The patch is to fix the "pkt" memory leak in packet_enqueue(). The allocated "pkt" needs to be freed if the colo compare primary or secondary queue is too big. Replace the error_report of full queue with a trace event. Signed-off-by: Derek Su Reviewed-by: Lukas Straub Reviewed-by: Zhang Chen Tested-by: Lukas Straub --- net/colo-compare.c | 23 +++++++++++++++-------- net/trace-events | 1 + 2 files changed, 16 insertions(+), 8 deletions(-) diff --git a/net/colo-compare.c b/net/colo-compare.c index 10c0239f9d..035e11d4d3 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -122,6 +122,10 @@ enum { SECONDARY_IN, }; =20 +static const char *colo_mode[] =3D { + [PRIMARY_IN] =3D "primary", + [SECONDARY_IN] =3D "secondary", +}; =20 static int compare_chr_send(CompareState *s, const uint8_t *buf, @@ -217,6 +221,7 @@ static int packet_enqueue(CompareState *s, int mode, Co= nnection **con) ConnectionKey key; Packet *pkt =3D NULL; Connection *conn; + int ret; =20 if (mode =3D=3D PRIMARY_IN) { pkt =3D packet_new(s->pri_rs.buf, @@ -245,16 +250,18 @@ static int packet_enqueue(CompareState *s, int mode, = Connection **con) } =20 if (mode =3D=3D PRIMARY_IN) { - if (!colo_insert_packet(&conn->primary_list, pkt, &conn->pack)) { - error_report("colo compare primary queue size too big," - "drop packet"); - } + ret =3D colo_insert_packet(&conn->primary_list, pkt, &conn->pack); } else { - if (!colo_insert_packet(&conn->secondary_list, pkt, &conn->sack)) { - error_report("colo compare secondary queue size too big," - "drop packet"); - } + ret =3D colo_insert_packet(&conn->secondary_list, pkt, &conn->sack= ); } + + if (!ret) { + trace_colo_compare_drop_packet(colo_mode[mode], + "queue size too big, drop packet"); + packet_destroy(pkt, NULL); + pkt =3D NULL; + } + *con =3D conn; =20 return 0; diff --git a/net/trace-events b/net/trace-events index 02c13fd0ba..fa49c71533 100644 --- a/net/trace-events +++ b/net/trace-events @@ -12,6 +12,7 @@ colo_proxy_main(const char *chr) ": %s" =20 # colo-compare.c colo_compare_main(const char *chr) ": %s" +colo_compare_drop_packet(const char *queue, const char *chr) ": %s: %s" colo_compare_udp_miscompare(const char *sta, int size) ": %s =3D %d" colo_compare_icmp_miscompare(const char *sta, int size) ": %s =3D %d" colo_compare_ip_info(int psize, const char *sta, const char *stb, int ssiz= e, const char *stc, const char *std) "ppkt size =3D %d, ip_src =3D %s, ip_d= st =3D %s, spkt size =3D %d, ip_src =3D %s, ip_dst =3D %s" --=20 2.17.1