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bh=elivO27Qf/JSTlTnpF6OqVy6SM5yMeRd8r5vrxQeoxI=; b=FjPZOm/ZSF1KNGa5arYMkIp1p816C0dSwL1YIso9stAPGkTV8yiIDltrlqkjZAKCP783U1 0ypQGr6uONo/+dZ+cJebIk5cded5fGsQqLVRyDhSnEpew92WW6LAd+bTfNeMcd4rJ+LFWp yr2z/DWNNS5XZx6Eb9ldKDv1NKiO5R0= X-MC-Unique: xTr9xwMrO0yXKoCM0SALxw-1 From: Jason Wang To: peter.maydell@linaro.org Subject: [PULL 30/33] colo-compare: Fix memory leak in packet_enqueue() Date: Tue, 16 Jun 2020 14:45:41 +0800 Message-Id: <1592289944-13727-31-git-send-email-jasowang@redhat.com> In-Reply-To: <1592289944-13727-1-git-send-email-jasowang@redhat.com> References: <1592289944-13727-1-git-send-email-jasowang@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jasowang@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable 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=207.211.31.81; envelope-from=jasowang@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/16 02:45:57 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=-0.01, RCVD_IN_MSPIKE_WL=-0.01, SPF_HELO_NONE=0.001, SPF_PASS=-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: Derek Su , Zhang Chen , Jason Wang , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) From: Derek Su 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: Zhang Chen Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Zhang Chen Signed-off-by: Jason Wang --- 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 ed1f3d0..f15779d 100644 --- a/net/colo-compare.c +++ b/net/colo-compare.c @@ -146,6 +146,10 @@ 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, uint8_t *buf, @@ -242,6 +246,7 @@ 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, @@ -270,16 +275,18 @@ 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 02c13fd..fa49c71 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 2.5.0