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That's all we know. X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, URIBL_BLOCKED=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: Feng Li , Dima Stepanov , Kyle Zhang , "open list:All patches CC here" , Paolo Bonzini Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Have you applied the first one? io/channel: fix crash when qio_channel_readv_all return 0 Thanks, Feng Li Marc-Andr=C3=A9 Lureau =E4=BA=8E2020=E5=B9=B4= 5=E6=9C=888=E6=97=A5=E5=91=A8=E4=BA=94 =E4=B8=8B=E5=8D=887:01=E5=86=99=E9= =81=93=EF=BC=9A > > On Fri, May 8, 2020 at 7:14 AM Li Feng wrote: > > > > 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=3D0x55555582ee90) at chardev= /char-socket.c:120 > > #1 0x000055555558e38c in tcp_chr_disconnect_locked (chr=3D) at chardev/char-socket.c:490 > > #2 0x000055555558e3cd in tcp_chr_disconnect (chr=3D0x55555582ee90)= at chardev/char-socket.c:497 > > #3 0x000055555558ea32 in tcp_chr_new_client (chr=3Dchr@entry=3D0x5= 5555582ee90, sioc=3Dsioc@entry=3D0x55555582f0b0) at chardev/char-socket.c:8= 92 > > #4 0x000055555558eeb8 in qemu_chr_socket_connected (task=3D0x55555= 582f300, opaque=3D) at chardev/char-socket.c:1090 > > #5 0x0000555555574352 in qio_task_complete (task=3Dtask@entry=3D0x= 55555582f300) at io/task.c:196 > > #6 0x00005555555745f4 in qio_task_thread_result (opaque=3D0x555555= 82f300) at io/task.c:111 > > #7 qio_task_wait_thread (task=3D0x55555582f300) at io/task.c:190 > > #8 0x000055555558f17e in tcp_chr_wait_connected (chr=3D0x55555582e= e90, errp=3D0x555555802a08 ) at chardev/char-socket.c:1013 > > #9 0x0000555555567cbd in char_socket_client_reconnect_test (opaque= =3D0x5555557fe020 ) 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=3D0x55= 555582ee90) at chardev/char-socket.c:125 > > #5 0x000055555558df0c in tcp_chr_disconnect_locked (chr=3D) at chardev/char-socket.c:490 > > #6 0x000055555558df4d in tcp_chr_disconnect (chr=3D0x55555582ee90)= at chardev/char-socket.c:497 > > #7 0x000055555558e5b2 in tcp_chr_new_client (chr=3Dchr@entry=3D0x5= 5555582ee90, sioc=3Dsioc@entry=3D0x55555582f0b0) at chardev/char-socket.c:8= 92 > > #8 0x000055555558e93a in tcp_chr_connect_client_sync (chr=3Dchr@en= try=3D0x55555582ee90, errp=3Derrp@entry=3D0x7fffffffd178) at chardev/char-s= ocket.c:944 > > #9 0x000055555558ec78 in tcp_chr_wait_connected (chr=3D0x55555582e= e90, errp=3D0x555555802a08 ) at chardev/char-socket.c:1035 > > #10 0x000055555556804b in char_socket_client_test (opaque=3D0x55555= 57fe020 ) 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: As= sertion `!s->reconnect_timer' failed. > > > > Signed-off-by: Li Feng > > After applying your patch, with qemu configure --enable-debug > --enable-sanitizers: > > $ tests/test-char > Unexpected error in qio_channel_readv_all() at > /home/elmarco/src/qq/io/channel.c:147: > Unexpected end-of-file before all bytes were read > [1] 2445287 abort (core dumped) tests/test-char > > > --- > > chardev/char-socket.c | 2 +- > > tests/test-char.c | 68 ++++++++++++++++++++++++++++++++++++++++---= -------- > > 2 files changed, 55 insertions(+), 15 deletions(-) > > > > diff --git a/chardev/char-socket.c b/chardev/char-socket.c > > index 1f14c2c7c8..d84330b3c9 100644 > > --- a/chardev/char-socket.c > > +++ b/chardev/char-socket.c > > @@ -486,7 +486,7 @@ 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 8d39bdc9fa..d5c9049eec 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 =3D event; > > } > > > > +static void > > +char_socket_event_with_error(void *opaque, QEMUChrEvent event) > > +{ > > + static bool first_error; > > + CharSocketTestData *data =3D opaque; > > + CharBackend *be =3D data->be; > > + data->event =3D event; > > + switch (event) { > > + case CHR_EVENT_OPENED: > > + if (!first_error) { > > + first_error =3D 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 > > +static int > > char_socket_ping_pong(QIOChannel *ioc) > > { > > char greeting[sizeof(SOCKET_PING)]; > > const char *response =3D SOCKET_PONG; > > > > - qio_channel_read_all(ioc, greeting, sizeof(greeting), &error_abort= ); > > + int ret; > > + ret =3D qio_channel_read_all(ioc, greeting, sizeof(greeting), &err= or_abort); > > + if (ret !=3D 0) { > > + object_unref(OBJECT(ioc)); > > + return -1; > > + } > > > > g_assert(memcmp(greeting, SOCKET_PING, sizeof(greeting)) =3D=3D 0)= ; > > > > qio_channel_write_all(ioc, response, sizeof(SOCKET_PONG), &error_a= bort); > > - > > object_unref(OBJECT(ioc)); > > + return 0; > > } > > > > > > @@ -783,6 +811,7 @@ static void char_socket_server_test(gconstpointer o= paque) > > > > reconnect: > > data.event =3D -1; > > + data.be =3D &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 =3D data; > > QIOChannelSocket *cioc; > > > > +retry: > > cioc =3D 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)) !=3D 0) { > > + goto retry; > > + } > > > > return NULL; > > } > > @@ -869,6 +901,7 @@ typedef struct { > > const char *reconnect; > > bool wait_connected; > > bool fd_pass; > > + char_socket_cb event_cb; > > } CharSocketClientTestConfig; > > > > static void char_socket_client_dupid_test(gconstpointer opaque) > > @@ -920,6 +953,7 @@ static void char_socket_client_dupid_test(gconstpoi= nter opaque) > > static void char_socket_client_test(gconstpointer opaque) > > { > > const CharSocketClientTestConfig *config =3D opaque; > > + const char_socket_cb event_cb =3D config->event_cb; > > QIOChannelSocket *ioc; > > char *optstr; > > Chardev *chr; > > @@ -983,8 +1017,9 @@ static void char_socket_client_test(gconstpointer = opaque) > > > > reconnect: > > data.event =3D -1; > > + data.be =3D &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 =3D=3D -1); > > @@ -1022,7 +1057,7 @@ 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 =3D=3D CHR_EVENT_OPENED); > > data.event =3D -1; > > @@ -1467,19 +1502,22 @@ int main(int argc, char **argv) > > > > #define SOCKET_CLIENT_TEST(name, addr) = \ > > static CharSocketClientTestConfig client1 ## name =3D = \ > > - { addr, NULL, false, false }; = \ > > + { addr, NULL, false, false, char_socket_event}; = \ > > static CharSocketClientTestConfig client2 ## name =3D = \ > > - { addr, NULL, true, false }; = \ > > + { addr, NULL, true, false, char_socket_event }; = \ > > static CharSocketClientTestConfig client3 ## name =3D = \ > > - { addr, ",reconnect=3D1", false }; = \ > > + { addr, ",reconnect=3D1", false, false, char_socket_event }; = \ > > static CharSocketClientTestConfig client4 ## name =3D = \ > > - { addr, ",reconnect=3D1", true }; = \ > > + { addr, ",reconnect=3D1", true, false, char_socket_event }; = \ > > static CharSocketClientTestConfig client5 ## name =3D = \ > > - { addr, NULL, false, true }; = \ > > + { addr, NULL, false, true, char_socket_event }; = \ > > static CharSocketClientTestConfig client6 ## name =3D = \ > > - { addr, NULL, true, true }; = \ > > + { addr, NULL, true, true, char_socket_event }; = \ > > static CharSocketClientTestConfig client7 ## name =3D = \ > > - { addr, ",reconnect=3D1", false, false }; = \ > > + { addr, ",reconnect=3D1", false, false, char_socket_event }; = \ > > + static CharSocketClientTestConfig client8 ## name =3D = \ > > + { addr, ",reconnect=3D1", 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, = \ > > @@ -1493,7 +1531,9 @@ int main(int argc, char **argv) > > g_test_add_data_func("/char/socket/client/wait-conn-fdpass/" # nam= e, \ > > &client6 ##name, char_socket_client_test); = \ > > g_test_add_data_func("/char/socket/client/dupid-reconnect/" # name= , \ > > - &client7 ##name, char_socket_client_dupid_tes= t) > > + &client7 ##name, char_socket_client_dupid_tes= t);\ > > + g_test_add_data_func("/char/socket/client/reconnect-error/" # name= , \ > > + &client8 ##name, char_socket_client_test) > > > > if (has_ipv4) { > > SOCKET_SERVER_TEST(tcp, &tcpaddr); > > -- > > 2.11.0 > > >