From: Zhang Chen <chen.zhang@intel.com >
To: Jason Wang <jasowang@redhat.com>
Cc: Derek Su <dereksu@qnap.com>, Zhang Chen <chen.zhang@intel.com>,
qemu-dev <qemu-devel@nongnu.org>,
Zhang Chen <zhangckid@gmail.com>
Subject: [PATCH V2 7/7] colo-compare: Fix memory leak in packet_enqueue()
Date: Fri, 22 May 2020 15:53:57 +0800 [thread overview]
Message-ID: <20200522075357.19883-8-chen.zhang@intel.com> (raw)
In-Reply-To: <20200522075357.19883-1-chen.zhang@intel.com>
From: Derek Su <dereksu@qnap.com>
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 <dereksu@qnap.com>
Reviewed-by: Zhang Chen <chen.zhang@intel.com>
Signed-off-by: Zhang Chen <chen.zhang@intel.com>
---
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 ed1f3d0af0..f15779dedc 100644
--- a/net/colo-compare.c
+++ b/net/colo-compare.c
@@ -146,6 +146,10 @@ enum {
SECONDARY_IN,
};
+static const char *colo_mode[] = {
+ [PRIMARY_IN] = "primary",
+ [SECONDARY_IN] = "secondary",
+};
static int compare_chr_send(CompareState *s,
uint8_t *buf,
@@ -242,6 +246,7 @@ static int packet_enqueue(CompareState *s, int mode, Connection **con)
ConnectionKey key;
Packet *pkt = NULL;
Connection *conn;
+ int ret;
if (mode == PRIMARY_IN) {
pkt = packet_new(s->pri_rs.buf,
@@ -270,16 +275,18 @@ static int packet_enqueue(CompareState *s, int mode, Connection **con)
}
if (mode == PRIMARY_IN) {
- if (!colo_insert_packet(&conn->primary_list, pkt, &conn->pack)) {
- error_report("colo compare primary queue size too big,"
- "drop packet");
- }
+ ret = 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 = 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 = NULL;
+ }
+
*con = conn;
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"
# 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 = %d"
colo_compare_icmp_miscompare(const char *sta, int size) ": %s = %d"
colo_compare_ip_info(int psize, const char *sta, const char *stb, int ssize, const char *stc, const char *std) "ppkt size = %d, ip_src = %s, ip_dst = %s, spkt size = %d, ip_src = %s, ip_dst = %s"
--
2.17.1
next prev parent reply other threads:[~2020-05-22 8:08 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-22 7:53 [PATCH V2 0/7] Latest COLO tree queued patches Zhang Chen
2020-05-22 7:53 ` [PATCH V2 1/7] net/colo-compare.c: Create event_bh with the right AioContext Zhang Chen
2020-05-22 7:53 ` [PATCH V2 2/7] chardev/char.c: Use qemu_co_sleep_ns if in coroutine Zhang Chen
2020-05-22 7:53 ` [PATCH V2 3/7] net/colo-compare.c: Fix deadlock in compare_chr_send Zhang Chen
2020-05-22 7:53 ` [PATCH V2 4/7] net/colo-compare.c: Only hexdump packets if tracing is enabled Zhang Chen
2020-05-22 7:53 ` [PATCH V2 5/7] net/colo-compare.c: Check that colo-compare is active Zhang Chen
2020-05-22 7:53 ` [PATCH V2 6/7] net/colo-compare.c: Correct ordering in complete and finalize Zhang Chen
2020-05-22 7:53 ` Zhang Chen [this message]
2020-05-25 2:46 ` [PATCH V2 0/7] Latest COLO tree queued patches Jason Wang
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