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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [qemu-xen staging] char-socket: initialize reconnect timer only when the timer doesn't start
commit 2b61bb716cd45ffe10fc92512b6134084c0ffcde
Author: Li Feng <fengli@xxxxxxxxxx>
AuthorDate: Fri May 22 10:55:54 2020 +0800
Commit: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>
CommitDate: Mon Jul 13 11:59:47 2020 +0400
char-socket: initialize reconnect timer only when the timer doesn't start
When the disconnect event is triggered in the connecting stage,
the tcp_chr_disconnect_locked may be called twice.
The first call:
#0 qemu_chr_socket_restart_timer (chr=0x55555582ee90) at
chardev/char-socket.c:120
#1 0x000055555558e38c in tcp_chr_disconnect_locked (chr=<optimized
out>) at chardev/char-socket.c:490
#2 0x000055555558e3cd in tcp_chr_disconnect (chr=0x55555582ee90) at
chardev/char-socket.c:497
#3 0x000055555558ea32 in tcp_chr_new_client
(chr=chr@entry=0x55555582ee90, sioc=sioc@entry=0x55555582f0b0) at
chardev/char-socket.c:892
#4 0x000055555558eeb8 in qemu_chr_socket_connected
(task=0x55555582f300, opaque=<optimized out>) at chardev/char-socket.c:1090
#5 0x0000555555574352 in qio_task_complete
(task=task@entry=0x55555582f300) at io/task.c:196
#6 0x00005555555745f4 in qio_task_thread_result
(opaque=0x55555582f300) at io/task.c:111
#7 qio_task_wait_thread (task=0x55555582f300) at io/task.c:190
#8 0x000055555558f17e in tcp_chr_wait_connected (chr=0x55555582ee90,
errp=0x555555802a08 <error_abort>) at chardev/char-socket.c:1013
#9 0x0000555555567cbd in char_socket_client_reconnect_test
(opaque=0x5555557fe020 <client8unix>) at tests/test-char.c:1152
The second call:
#0 0x00007ffff5ac3277 in raise () from /lib64/libc.so.6
#1 0x00007ffff5ac4968 in abort () from /lib64/libc.so.6
#2 0x00007ffff5abc096 in __assert_fail_base () from /lib64/libc.so.6
#3 0x00007ffff5abc142 in __assert_fail () from /lib64/libc.so.6
#4 0x000055555558d10a in qemu_chr_socket_restart_timer
(chr=0x55555582ee90) at chardev/char-socket.c:125
#5 0x000055555558df0c in tcp_chr_disconnect_locked (chr=<optimized
out>) at chardev/char-socket.c:490
#6 0x000055555558df4d in tcp_chr_disconnect (chr=0x55555582ee90) at
chardev/char-socket.c:497
#7 0x000055555558e5b2 in tcp_chr_new_client
(chr=chr@entry=0x55555582ee90, sioc=sioc@entry=0x55555582f0b0) at
chardev/char-socket.c:892
#8 0x000055555558e93a in tcp_chr_connect_client_sync
(chr=chr@entry=0x55555582ee90, errp=errp@entry=0x7fffffffd178) at
chardev/char-socket.c:944
#9 0x000055555558ec78 in tcp_chr_wait_connected (chr=0x55555582ee90,
errp=0x555555802a08 <error_abort>) at chardev/char-socket.c:1035
#10 0x000055555556804b in char_socket_client_test
(opaque=0x5555557fe020 <client8unix>) at tests/test-char.c:1023
Run test/test-char to reproduce this issue.
test-char: chardev/char-socket.c:125: qemu_chr_socket_restart_timer:
Assertion `!s->reconnect_timer' failed.
Signed-off-by: Li Feng <fengli@xxxxxxxxxx>
Acked-by: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>
Message-Id: <20200522025554.41063-1-fengli@xxxxxxxxxx>
---
chardev/char-socket.c | 2 +-
tests/test-char.c | 73 +++++++++++++++++++++++++++++++++++++++------------
2 files changed, 57 insertions(+), 18 deletions(-)
diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index 5758d9900f..320aa7c642 100644
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -490,7 +490,7 @@ static void tcp_chr_disconnect_locked(Chardev *chr)
if (emit_close) {
qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
}
- if (s->reconnect_time) {
+ if (s->reconnect_time && !s->reconnect_timer) {
qemu_chr_socket_restart_timer(chr);
}
}
diff --git a/tests/test-char.c b/tests/test-char.c
index 3afc9b1b8d..73ba1cf601 100644
--- a/tests/test-char.c
+++ b/tests/test-char.c
@@ -625,12 +625,14 @@ static void char_udp_test(void)
typedef struct {
int event;
bool got_pong;
+ CharBackend *be;
} CharSocketTestData;
#define SOCKET_PING "Hello"
#define SOCKET_PONG "World"
+typedef void (*char_socket_cb)(void *opaque, QEMUChrEvent event);
static void
char_socket_event(void *opaque, QEMUChrEvent event)
@@ -639,6 +641,27 @@ char_socket_event(void *opaque, QEMUChrEvent event)
data->event = event;
}
+static void
+char_socket_event_with_error(void *opaque, QEMUChrEvent event)
+{
+ static bool first_error;
+ CharSocketTestData *data = opaque;
+ CharBackend *be = data->be;
+ data->event = event;
+ switch (event) {
+ case CHR_EVENT_OPENED:
+ if (!first_error) {
+ first_error = true;
+ qemu_chr_fe_disconnect(be);
+ }
+ return;
+ case CHR_EVENT_CLOSED:
+ return;
+ default:
+ return;
+ }
+}
+
static void
char_socket_read(void *opaque, const uint8_t *buf, int size)
@@ -699,19 +722,24 @@ char_socket_addr_to_opt_str(SocketAddress *addr, bool
fd_pass,
}
-static void
-char_socket_ping_pong(QIOChannel *ioc)
+static int
+char_socket_ping_pong(QIOChannel *ioc, Error **errp)
{
char greeting[sizeof(SOCKET_PING)];
const char *response = SOCKET_PONG;
- qio_channel_read_all(ioc, greeting, sizeof(greeting), &error_abort);
+ int ret;
+ ret = qio_channel_read_all(ioc, greeting, sizeof(greeting), errp);
+ if (ret != 0) {
+ object_unref(OBJECT(ioc));
+ return -1;
+ }
g_assert(memcmp(greeting, SOCKET_PING, sizeof(greeting)) == 0);
- qio_channel_write_all(ioc, response, sizeof(SOCKET_PONG), &error_abort);
-
+ qio_channel_write_all(ioc, response, sizeof(SOCKET_PONG), errp);
object_unref(OBJECT(ioc));
+ return 0;
}
@@ -723,7 +751,7 @@ char_socket_server_client_thread(gpointer data)
qio_channel_socket_connect_sync(ioc, addr, &error_abort);
- char_socket_ping_pong(QIO_CHANNEL(ioc));
+ char_socket_ping_pong(QIO_CHANNEL(ioc), &error_abort);
return NULL;
}
@@ -783,6 +811,7 @@ static void char_socket_server_test(gconstpointer opaque)
reconnect:
data.event = -1;
+ data.be = &be;
qemu_chr_fe_set_handlers(&be, NULL, NULL,
char_socket_event, NULL,
&data, NULL, true);
@@ -855,10 +884,13 @@ char_socket_client_server_thread(gpointer data)
QIOChannelSocket *ioc = data;
QIOChannelSocket *cioc;
+retry:
cioc = qio_channel_socket_accept(ioc, &error_abort);
g_assert_nonnull(cioc);
- char_socket_ping_pong(QIO_CHANNEL(cioc));
+ if (char_socket_ping_pong(QIO_CHANNEL(cioc), NULL) != 0) {
+ goto retry;
+ }
return NULL;
}
@@ -869,12 +901,13 @@ typedef struct {
const char *reconnect;
bool wait_connected;
bool fd_pass;
+ char_socket_cb event_cb;
} CharSocketClientTestConfig;
-
static void char_socket_client_test(gconstpointer opaque)
{
const CharSocketClientTestConfig *config = opaque;
+ const char_socket_cb event_cb = config->event_cb;
QIOChannelSocket *ioc;
char *optstr;
Chardev *chr;
@@ -938,8 +971,9 @@ static void char_socket_client_test(gconstpointer opaque)
reconnect:
data.event = -1;
+ data.be = &be;
qemu_chr_fe_set_handlers(&be, NULL, NULL,
- char_socket_event, NULL,
+ event_cb, NULL,
&data, NULL, true);
if (config->reconnect) {
g_assert(data.event == -1);
@@ -977,7 +1011,7 @@ static void char_socket_client_test(gconstpointer opaque)
/* Setup a callback to receive the reply to our greeting */
qemu_chr_fe_set_handlers(&be, char_socket_can_read,
char_socket_read,
- char_socket_event, NULL,
+ event_cb, NULL,
&data, NULL, true);
g_assert(data.event == CHR_EVENT_OPENED);
data.event = -1;
@@ -1422,17 +1456,20 @@ int main(int argc, char **argv)
#define SOCKET_CLIENT_TEST(name, addr) \
static CharSocketClientTestConfig client1 ## name = \
- { addr, NULL, false, false }; \
+ { addr, NULL, false, false, char_socket_event}; \
static CharSocketClientTestConfig client2 ## name = \
- { addr, NULL, true, false }; \
+ { addr, NULL, true, false, char_socket_event }; \
static CharSocketClientTestConfig client3 ## name = \
- { addr, ",reconnect=1", false }; \
+ { addr, ",reconnect=1", false, false, char_socket_event }; \
static CharSocketClientTestConfig client4 ## name = \
- { addr, ",reconnect=1", true }; \
+ { addr, ",reconnect=1", true, false, char_socket_event }; \
static CharSocketClientTestConfig client5 ## name = \
- { addr, NULL, false, true }; \
+ { addr, NULL, false, true, char_socket_event }; \
static CharSocketClientTestConfig client6 ## name = \
- { addr, NULL, true, true }; \
+ { addr, NULL, true, true, char_socket_event }; \
+ static CharSocketClientTestConfig client7 ## name = \
+ { addr, ",reconnect=1", true, false, \
+ char_socket_event_with_error }; \
g_test_add_data_func("/char/socket/client/mainloop/" # name, \
&client1 ##name, char_socket_client_test); \
g_test_add_data_func("/char/socket/client/wait-conn/" # name, \
@@ -1444,7 +1481,9 @@ int main(int argc, char **argv)
g_test_add_data_func("/char/socket/client/mainloop-fdpass/" # name, \
&client5 ##name, char_socket_client_test); \
g_test_add_data_func("/char/socket/client/wait-conn-fdpass/" # name, \
- &client6 ##name, char_socket_client_test)
+ &client6 ##name, char_socket_client_test); \
+ g_test_add_data_func("/char/socket/client/reconnect-error/" # name, \
+ &client7 ##name, char_socket_client_test)
if (has_ipv4) {
SOCKET_SERVER_TEST(tcp, &tcpaddr);
--
generated by git-patchbot for /home/xen/git/qemu-xen.git#staging
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