[dpdk-dev] [PATCH 0/2] fix missing check for thread creation

[dpdk-dev] [PATCH 0/2] fix missing check for thread creation

[Min Hu (Connor)]

There exist some thread creation function without result check.

This set of patches add result check and message print out after
failure.

Chengwen Feng (2):
  telemetry: fix missing check for thread creation
  test: fix missing check for thread creation

 app/test/process.h                      |  8 ++++++--
 lib/librte_telemetry/telemetry.c        | 30 +++++++++++++++++++++++++++---
 lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
 3 files changed, 41 insertions(+), 7 deletions(-)

-- 
2.7.4

[dpdk-dev] [PATCH 1/2] telemetry: fix missing check for thread creation

[Min Hu (Connor)]

From: Chengwen Feng <fengchengwen@huawei.com>

Add result check and message print out for thread creation after
failure.

Fixes: b80fe1805eee ("telemetry: introduce backward compatibility")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 lib/librte_telemetry/telemetry.c        | 30 +++++++++++++++++++++++++++---
 lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
 2 files changed, 35 insertions(+), 5 deletions(-)

diff --git a/lib/librte_telemetry/telemetry.c b/lib/librte_telemetry/telemetry.c
index 7e08afd..b039087 100644
--- a/lib/librte_telemetry/telemetry.c
+++ b/lib/librte_telemetry/telemetry.c
@@ -350,6 +350,7 @@ socket_listener(void *socket)
 {
 	while (1) {
 		pthread_t th;
+		int rc;
 		struct socket *s = (struct socket *)socket;
 		int s_accepted = accept(s->sock, NULL, NULL);
 		if (s_accepted < 0) {
@@ -366,7 +367,16 @@ socket_listener(void *socket)
 			__atomic_add_fetch(s->num_clients, 1,
 					__ATOMIC_RELAXED);
 		}
-		pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
+		rc = pthread_create(&th, NULL, s->fn,
+				    (void *)(uintptr_t)s_accepted);
+		if (rc) {
+			snprintf(telemetry_log_error,
+				sizeof(telemetry_log_error),
+				"Error with create thread, telemetry thread "
+				"quitting");
+			close(s_accepted);
+			return NULL;
+		}
 		pthread_detach(th);
 	}
 	return NULL;
@@ -425,6 +435,7 @@ static int
 telemetry_legacy_init(void)
 {
 	pthread_t t_old;
+	int rc;
 
 	if (num_legacy_callbacks == 1) {
 		TMTY_LOG(WARNING, "No legacy callbacks, legacy socket not created\n");
@@ -440,7 +451,13 @@ telemetry_legacy_init(void)
 	v1_socket.sock = create_socket(v1_socket.path);
 	if (v1_socket.sock < 0)
 		return -1;
-	pthread_create(&t_old, NULL, socket_listener, &v1_socket);
+	rc = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
+	if (rc) {
+		snprintf(telemetry_log_error, sizeof(telemetry_log_error),
+				"Error with create thread");
+		unlink_sockets();
+		return -1;
+	}
 	pthread_setaffinity_np(t_old, sizeof(*thread_cpuset), thread_cpuset);
 
 	TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n");
@@ -451,6 +468,7 @@ static int
 telemetry_v2_init(void)
 {
 	pthread_t t_new;
+	int rc;
 
 	v2_socket.num_clients = &v2_clients;
 	rte_telemetry_register_cmd("/", list_commands,
@@ -469,7 +487,13 @@ telemetry_v2_init(void)
 	v2_socket.sock = create_socket(v2_socket.path);
 	if (v2_socket.sock < 0)
 		return -1;
-	pthread_create(&t_new, NULL, socket_listener, &v2_socket);
+	rc = pthread_create(&t_new, NULL, socket_listener, &v2_socket);
+	if (rc) {
+		snprintf(telemetry_log_error, sizeof(telemetry_log_error),
+				"Error with create thread");
+		unlink_sockets();
+		return -1;
+	}
 	pthread_setaffinity_np(t_new, sizeof(*thread_cpuset), thread_cpuset);
 	atexit(unlink_sockets);
 
diff --git a/lib/librte_telemetry/telemetry_legacy.c b/lib/librte_telemetry/telemetry_legacy.c
index 5e9af37..9587bfe 100644
--- a/lib/librte_telemetry/telemetry_legacy.c
+++ b/lib/librte_telemetry/telemetry_legacy.c
@@ -83,6 +83,7 @@ register_client(const char *cmd __rte_unused, const char *params,
 	pthread_t th;
 	char data[BUF_SIZE];
 	int fd;
+	int rc;
 	struct sockaddr_un addrs;
 #endif /* !RTE_EXEC_ENV_WINDOWS */
 
@@ -112,8 +113,13 @@ register_client(const char *cmd __rte_unused, const char *params,
 		close(fd);
 		return -1;
 	}
-	pthread_create(&th, NULL, &legacy_client_handler,
-			(void *)(uintptr_t)fd);
+	rc = pthread_create(&th, NULL, &legacy_client_handler,
+				(void *)(uintptr_t)fd);
+	if (rc) {
+		fprintf(stderr, "Failed to create thread\n");
+		close(fd);
+		return -1;
+	}
 #endif /* !RTE_EXEC_ENV_WINDOWS */
 	return 0;
 }
-- 
2.7.4

[dpdk-dev] [PATCH 2/2] test: fix missing check for thread creation

[Min Hu (Connor)]

From: Chengwen Feng <fengchengwen@huawei.com>

There was a call for thread create function without result check.
Add result check and message print out after failure.

Fixes: 086eb64db39e ("test/pdump: add unit test for pdump library")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 app/test/process.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/app/test/process.h b/app/test/process.h
index 27f1b1c..9b6b85a 100644
--- a/app/test/process.h
+++ b/app/test/process.h
@@ -48,6 +48,7 @@ process_dup(const char *const argv[], int numargs, const char *env_value)
 #ifdef RTE_LIB_PDUMP
 #ifdef RTE_NET_RING
 	pthread_t thread;
+	int rc;
 #endif
 #endif
 
@@ -126,8 +127,11 @@ process_dup(const char *const argv[], int numargs, const char *env_value)
 	/* parent process does a wait */
 #ifdef RTE_LIB_PDUMP
 #ifdef RTE_NET_RING
-	if ((strcmp(env_value, "run_pdump_server_tests") == 0))
-		pthread_create(&thread, NULL, &send_pkts, NULL);
+	if ((strcmp(env_value, "run_pdump_server_tests") == 0)) {
+		rc = pthread_create(&thread, NULL, &send_pkts, NULL);
+		if (rc)
+			rte_panic("Cannot start send pkts thread\n");
+	}
 #endif
 #endif
 
-- 
2.7.4

[dpdk-dev] [PATCH v2 0/2] fix missing check for thread creation

[Min Hu (Connor)]

There exist some thread creation function without result check.

This set of patches add result check and message print out after
failure.

Chengwen Feng (2):
  telemetry: fix missing check for thread creation
  test: fix missing check for thread creation
---
v2:
* fix compiling bugs of missig value.

 app/test/process.h                      |  8 ++++++--
 lib/librte_telemetry/telemetry.c        | 28 +++++++++++++++++++++++++---
 lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
 3 files changed, 39 insertions(+), 7 deletions(-)

-- 
2.7.4

[dpdk-dev] [PATCH v2 1/2] telemetry: fix missing check for thread creation

[Min Hu (Connor)]

From: Chengwen Feng <fengchengwen@huawei.com>

Add result check and message print out for thread creation after
failure.

Fixes: b80fe1805eee ("telemetry: introduce backward compatibility")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 lib/librte_telemetry/telemetry.c        | 28 +++++++++++++++++++++++++---
 lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
 2 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/lib/librte_telemetry/telemetry.c b/lib/librte_telemetry/telemetry.c
index 7e08afd..3f1a4c4 100644
--- a/lib/librte_telemetry/telemetry.c
+++ b/lib/librte_telemetry/telemetry.c
@@ -350,6 +350,7 @@ socket_listener(void *socket)
 {
 	while (1) {
 		pthread_t th;
+		int rc;
 		struct socket *s = (struct socket *)socket;
 		int s_accepted = accept(s->sock, NULL, NULL);
 		if (s_accepted < 0) {
@@ -366,7 +367,14 @@ socket_listener(void *socket)
 			__atomic_add_fetch(s->num_clients, 1,
 					__ATOMIC_RELAXED);
 		}
-		pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
+		rc = pthread_create(&th, NULL, s->fn,
+				    (void *)(uintptr_t)s_accepted);
+		if (rc) {
+			TMTY_LOG(ERR, "Error with create thread, telemetry thread quitting\n");
+			close(s_accepted);
+			return NULL;
+		}
+
 		pthread_detach(th);
 	}
 	return NULL;
@@ -425,6 +433,7 @@ static int
 telemetry_legacy_init(void)
 {
 	pthread_t t_old;
+	int rc;
 
 	if (num_legacy_callbacks == 1) {
 		TMTY_LOG(WARNING, "No legacy callbacks, legacy socket not created\n");
@@ -440,7 +449,13 @@ telemetry_legacy_init(void)
 	v1_socket.sock = create_socket(v1_socket.path);
 	if (v1_socket.sock < 0)
 		return -1;
-	pthread_create(&t_old, NULL, socket_listener, &v1_socket);
+	rc = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
+	if (rc) {
+		TMTY_LOG(ERR, "Error with create thread\n");
+		unlink_sockets();
+		return -1;
+	}
+
 	pthread_setaffinity_np(t_old, sizeof(*thread_cpuset), thread_cpuset);
 
 	TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n");
@@ -451,6 +466,7 @@ static int
 telemetry_v2_init(void)
 {
 	pthread_t t_new;
+	int rc;
 
 	v2_socket.num_clients = &v2_clients;
 	rte_telemetry_register_cmd("/", list_commands,
@@ -469,7 +485,13 @@ telemetry_v2_init(void)
 	v2_socket.sock = create_socket(v2_socket.path);
 	if (v2_socket.sock < 0)
 		return -1;
-	pthread_create(&t_new, NULL, socket_listener, &v2_socket);
+	rc = pthread_create(&t_new, NULL, socket_listener, &v2_socket);
+	if (rc) {
+		TMTY_LOG(ERR, "Error with create thread\n");
+		unlink_sockets();
+		return -1;
+	}
+
 	pthread_setaffinity_np(t_new, sizeof(*thread_cpuset), thread_cpuset);
 	atexit(unlink_sockets);
 
diff --git a/lib/librte_telemetry/telemetry_legacy.c b/lib/librte_telemetry/telemetry_legacy.c
index 5e9af37..9587bfe 100644
--- a/lib/librte_telemetry/telemetry_legacy.c
+++ b/lib/librte_telemetry/telemetry_legacy.c
@@ -83,6 +83,7 @@ register_client(const char *cmd __rte_unused, const char *params,
 	pthread_t th;
 	char data[BUF_SIZE];
 	int fd;
+	int rc;
 	struct sockaddr_un addrs;
 #endif /* !RTE_EXEC_ENV_WINDOWS */
 
@@ -112,8 +113,13 @@ register_client(const char *cmd __rte_unused, const char *params,
 		close(fd);
 		return -1;
 	}
-	pthread_create(&th, NULL, &legacy_client_handler,
-			(void *)(uintptr_t)fd);
+	rc = pthread_create(&th, NULL, &legacy_client_handler,
+				(void *)(uintptr_t)fd);
+	if (rc) {
+		fprintf(stderr, "Failed to create thread\n");
+		close(fd);
+		return -1;
+	}
 #endif /* !RTE_EXEC_ENV_WINDOWS */
 	return 0;
 }
-- 
2.7.4

Re: [dpdk-dev] [PATCH v2 1/2] telemetry: fix missing check for thread creation

[David Marchand]

On Mon, Apr 12, 2021 at 2:32 AM Min Hu (Connor) <humin29@huawei.com> wrote:
>
> From: Chengwen Feng <fengchengwen@huawei.com>
>
> Add result check and message print out for thread creation after
> failure.

Ah, I was looking at this code too, while looking at your other series :-).


>
> Fixes: b80fe1805eee ("telemetry: introduce backward compatibility")
> Cc: stable@dpdk.org
>
> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
> Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
> ---
>  lib/librte_telemetry/telemetry.c        | 28 +++++++++++++++++++++++++---
>  lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
>  2 files changed, 33 insertions(+), 5 deletions(-)
>
> diff --git a/lib/librte_telemetry/telemetry.c b/lib/librte_telemetry/telemetry.c
> index 7e08afd..3f1a4c4 100644
> --- a/lib/librte_telemetry/telemetry.c
> +++ b/lib/librte_telemetry/telemetry.c
> @@ -350,6 +350,7 @@ socket_listener(void *socket)
>  {
>         while (1) {
>                 pthread_t th;
> +               int rc;
>                 struct socket *s = (struct socket *)socket;
>                 int s_accepted = accept(s->sock, NULL, NULL);
>                 if (s_accepted < 0) {
> @@ -366,7 +367,14 @@ socket_listener(void *socket)
>                         __atomic_add_fetch(s->num_clients, 1,
>                                         __ATOMIC_RELAXED);
>                 }
> -               pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
> +               rc = pthread_create(&th, NULL, s->fn,
> +                                   (void *)(uintptr_t)s_accepted);
> +               if (rc) {

Either you use this rc variable (adding strerror(rc) in the log
message below) or you can remove it.
This comment applies to others updates below.


> +                       TMTY_LOG(ERR, "Error with create thread, telemetry thread quitting\n");
> +                       close(s_accepted);
> +                       return NULL;
> +               }
> +
>                 pthread_detach(th);
>         }
>         return NULL;
> @@ -425,6 +433,7 @@ static int
>  telemetry_legacy_init(void)
>  {
>         pthread_t t_old;
> +       int rc;
>
>         if (num_legacy_callbacks == 1) {
>                 TMTY_LOG(WARNING, "No legacy callbacks, legacy socket not created\n");
> @@ -440,7 +449,13 @@ Fixes: 3b3757bda3c3 ("net/ice: get VF hardware index in DCF")
(void)
>         v1_socket.sock = create_socket(v1_socket.path);
>         if (v1_socket.sock < 0)
>                 return -1;
> -       pthread_create(&t_old, NULL, socket_listener, &v1_socket);
> +       rc = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
> +       if (rc) {
> +               TMTY_LOG(ERR, "Error with create thread\n");
> +               unlink_sockets();

Before this patch, v2 mode could be working fine with v1 ko.
I think it was intended since telemetry_legacy_init return value is
not checked and unlink_sockets() checks whether the v1 and v2 sockets
have been created.

Plus, in this error handling, the v1 socket fd is left open.

How about:

+       ret = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
+       if (ret != 0) {
+               TMTY_LOG(DEBUG, "Failed to create handler for legacy
socket: %s\n",
+                       strerror(ret));
+               close(v1_socket.sock);
+               v1_socket.sock = -1;
+               if (v1_socket.path[0]) {
+                       unlink(v1_socket.path);
+                       v1_socket.path[0] = '\0';
+               }
+               return -1;
+       }


> +               return -1;
> +       }
> +
>         pthread_setaffinity_np(t_old, sizeof(*thread_cpuset), thread_cpuset);
>
>         TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n");
> @@ -451,6 +466,7 @@ static int
>  telemetry_v2_init(void)
>  {
>         pthread_t t_new;
> +       int rc;
>
>         v2_socket.num_clients = &v2_clients;
>         rte_telemetry_register_cmd("/", list_commands,
> @@ -469,7 +485,13 @@ telemetry_v2_init(void)
>         v2_socket.sock = create_socket(v2_socket.path);
>         if (v2_socket.sock < 0)
>                 return -1;
> -       pthread_create(&t_new, NULL, socket_listener, &v2_socket);
> +       rc = pthread_create(&t_new, NULL, socket_listener, &v2_socket);
> +       if (rc) {
> +               TMTY_LOG(ERR, "Error with create thread\n");
> +               unlink_sockets();
> +               return -1;
> +       }
> +

Missing a close on v2 socket,


>         pthread_setaffinity_np(t_new, sizeof(*thread_cpuset), thread_cpuset);
>         atexit(unlink_sockets);
>
> diff --git a/lib/librte_telemetry/telemetry_legacy.c b/lib/librte_telemetry/telemetry_legacy.c
> index 5e9af37..9587bfe 100644
> --- a/lib/librte_telemetry/telemetry_legacy.c
> +++ b/lib/librte_telemetry/telemetry_legacy.c
> @@ -83,6 +83,7 @@ register_client(const char *cmd __rte_unused, const char *params,
>         pthread_t th;
>         char data[BUF_SIZE];
>         int fd;
> +       int rc;
>         struct sockaddr_un addrs;
>  #endif /* !RTE_EXEC_ENV_WINDOWS */
>
> @@ -112,8 +113,13 @@ register_client(const char *cmd __rte_unused, const char *params,
>                 close(fd);
>                 return -1;
>         }
> -       pthread_create(&th, NULL, &legacy_client_handler,
> -                       (void *)(uintptr_t)fd);
> +       rc = pthread_create(&th, NULL, &legacy_client_handler,
> +                               (void *)(uintptr_t)fd);
> +       if (rc) {
> +               fprintf(stderr, "Failed to create thread\n");
> +               close(fd);
> +               return -1;
> +       }
>  #endif /* !RTE_EXEC_ENV_WINDOWS */
>         return 0;
>  }
> --
> 2.7.4
>



-- 
David Marchand

Re: [dpdk-dev] [PATCH v2 1/2] telemetry: fix missing check for thread creation

[Min Hu (Connor)]

Hi, David,
	ALl has been fixed in v3, please check it out, thanks.

在 2021/4/12 15:48, David Marchand 写道:
> On Mon, Apr 12, 2021 at 2:32 AM Min Hu (Connor) <humin29@huawei.com> wrote:
>>
>> From: Chengwen Feng <fengchengwen@huawei.com>
>>
>> Add result check and message print out for thread creation after
>> failure.
> 
> Ah, I was looking at this code too, while looking at your other series :-).
> 
> 
>>
>> Fixes: b80fe1805eee ("telemetry: introduce backward compatibility")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
>> Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
>> ---
>>   lib/librte_telemetry/telemetry.c        | 28 +++++++++++++++++++++++++---
>>   lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
>>   2 files changed, 33 insertions(+), 5 deletions(-)
>>
>> diff --git a/lib/librte_telemetry/telemetry.c b/lib/librte_telemetry/telemetry.c
>> index 7e08afd..3f1a4c4 100644
>> --- a/lib/librte_telemetry/telemetry.c
>> +++ b/lib/librte_telemetry/telemetry.c
>> @@ -350,6 +350,7 @@ socket_listener(void *socket)
>>   {
>>          while (1) {
>>                  pthread_t th;
>> +               int rc;
>>                  struct socket *s = (struct socket *)socket;
>>                  int s_accepted = accept(s->sock, NULL, NULL);
>>                  if (s_accepted < 0) {
>> @@ -366,7 +367,14 @@ socket_listener(void *socket)
>>                          __atomic_add_fetch(s->num_clients, 1,
>>                                          __ATOMIC_RELAXED);
>>                  }
>> -               pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
>> +               rc = pthread_create(&th, NULL, s->fn,
>> +                                   (void *)(uintptr_t)s_accepted);
>> +               if (rc) {
> 
> Either you use this rc variable (adding strerror(rc) in the log
> message below) or you can remove it.
> This comment applies to others updates below.
> 
> 
>> +                       TMTY_LOG(ERR, "Error with create thread, telemetry thread quitting\n");
>> +                       close(s_accepted);
>> +                       return NULL;
>> +               }
>> +
>>                  pthread_detach(th);
>>          }
>>          return NULL;
>> @@ -425,6 +433,7 @@ static int
>>   telemetry_legacy_init(void)
>>   {
>>          pthread_t t_old;
>> +       int rc;
>>
>>          if (num_legacy_callbacks == 1) {
>>                  TMTY_LOG(WARNING, "No legacy callbacks, legacy socket not created\n");
>> @@ -440,7 +449,13 @@ Fixes: 3b3757bda3c3 ("net/ice: get VF hardware index in DCF")
> (void)
>>          v1_socket.sock = create_socket(v1_socket.path);
>>          if (v1_socket.sock < 0)
>>                  return -1;
>> -       pthread_create(&t_old, NULL, socket_listener, &v1_socket);
>> +       rc = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
>> +       if (rc) {
>> +               TMTY_LOG(ERR, "Error with create thread\n");
>> +               unlink_sockets();
> 
> Before this patch, v2 mode could be working fine with v1 ko.
> I think it was intended since telemetry_legacy_init return value is
> not checked and unlink_sockets() checks whether the v1 and v2 sockets
> have been created.
> 
> Plus, in this error handling, the v1 socket fd is left open.
> 
> How about:
> 
> +       ret = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
> +       if (ret != 0) {
> +               TMTY_LOG(DEBUG, "Failed to create handler for legacy
> socket: %s\n",
> +                       strerror(ret));
> +               close(v1_socket.sock);
> +               v1_socket.sock = -1;
> +               if (v1_socket.path[0]) {
> +                       unlink(v1_socket.path);
> +                       v1_socket.path[0] = '\0';
> +               }
> +               return -1;
> +       }
> 
ok, but there is no need to judge v1_socket.path[0] because previous
setup will ensure it's validation.
> 
>> +               return -1;
>> +       }
>> +
>>          pthread_setaffinity_np(t_old, sizeof(*thread_cpuset), thread_cpuset);
>>
>>          TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n");
>> @@ -451,6 +466,7 @@ static int
>>   telemetry_v2_init(void)
>>   {
>>          pthread_t t_new;
>> +       int rc;
>>
>>          v2_socket.num_clients = &v2_clients;
>>          rte_telemetry_register_cmd("/", list_commands,
>> @@ -469,7 +485,13 @@ telemetry_v2_init(void)
>>          v2_socket.sock = create_socket(v2_socket.path);
>>          if (v2_socket.sock < 0)
>>                  return -1;
>> -       pthread_create(&t_new, NULL, socket_listener, &v2_socket);
>> +       rc = pthread_create(&t_new, NULL, socket_listener, &v2_socket);
>> +       if (rc) {
>> +               TMTY_LOG(ERR, "Error with create thread\n");
>> +               unlink_sockets();
>> +               return -1;
>> +       }
>> +
> 
> Missing a close on v2 socket,
> 
> 
>>          pthread_setaffinity_np(t_new, sizeof(*thread_cpuset), thread_cpuset);
>>          atexit(unlink_sockets);
>>
>> diff --git a/lib/librte_telemetry/telemetry_legacy.c b/lib/librte_telemetry/telemetry_legacy.c
>> index 5e9af37..9587bfe 100644
>> --- a/lib/librte_telemetry/telemetry_legacy.c
>> +++ b/lib/librte_telemetry/telemetry_legacy.c
>> @@ -83,6 +83,7 @@ register_client(const char *cmd __rte_unused, const char *params,
>>          pthread_t th;
>>          char data[BUF_SIZE];
>>          int fd;
>> +       int rc;
>>          struct sockaddr_un addrs;
>>   #endif /* !RTE_EXEC_ENV_WINDOWS */
>>
>> @@ -112,8 +113,13 @@ register_client(const char *cmd __rte_unused, const char *params,
>>                  close(fd);
>>                  return -1;
>>          }
>> -       pthread_create(&th, NULL, &legacy_client_handler,
>> -                       (void *)(uintptr_t)fd);
>> +       rc = pthread_create(&th, NULL, &legacy_client_handler,
>> +                               (void *)(uintptr_t)fd);
>> +       if (rc) {
>> +               fprintf(stderr, "Failed to create thread\n");
>> +               close(fd);
>> +               return -1;
>> +       }
>>   #endif /* !RTE_EXEC_ENV_WINDOWS */
>>          return 0;
>>   }
>> --
>> 2.7.4
>>
> 
> 
> 

[dpdk-dev] [PATCH v2 2/2] test: fix missing check for thread creation

[Min Hu (Connor)]

From: Chengwen Feng <fengchengwen@huawei.com>

There was a call for thread create function without result check.
Add result check and message print out after failure.

Fixes: 086eb64db39e ("test/pdump: add unit test for pdump library")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 app/test/process.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/app/test/process.h b/app/test/process.h
index 27f1b1c..9b6b85a 100644
--- a/app/test/process.h
+++ b/app/test/process.h
@@ -48,6 +48,7 @@ process_dup(const char *const argv[], int numargs, const char *env_value)
 #ifdef RTE_LIB_PDUMP
 #ifdef RTE_NET_RING
 	pthread_t thread;
+	int rc;
 #endif
 #endif
 
@@ -126,8 +127,11 @@ process_dup(const char *const argv[], int numargs, const char *env_value)
 	/* parent process does a wait */
 #ifdef RTE_LIB_PDUMP
 #ifdef RTE_NET_RING
-	if ((strcmp(env_value, "run_pdump_server_tests") == 0))
-		pthread_create(&thread, NULL, &send_pkts, NULL);
+	if ((strcmp(env_value, "run_pdump_server_tests") == 0)) {
+		rc = pthread_create(&thread, NULL, &send_pkts, NULL);
+		if (rc)
+			rte_panic("Cannot start send pkts thread\n");
+	}
 #endif
 #endif
 
-- 
2.7.4

[dpdk-dev] [PATCH v3 0/2] fix missing check for thread creation

[Min Hu (Connor)]

There exist some thread creation function without result check.

This set of patches add result check and message print out after
failure.

Chengwen Feng (2):
  telemetry: fix missing check for thread creation
  test: fix missing check for thread creation
---
v3:
* modify return value check and error logging.

v2:
* fix compiling bugs of missig value.

 app/test/process.h                      |  8 ++++++--
 lib/librte_telemetry/telemetry.c        | 30 +++++++++++++++++++++++++++---
 lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
 3 files changed, 41 insertions(+), 7 deletions(-)

-- 
2.7.4

[dpdk-dev] [PATCH v3 1/2] telemetry: fix missing check for thread creation

[Min Hu (Connor)]

From: Chengwen Feng <fengchengwen@huawei.com>

Add result check and message print out for thread creation after
failure.

Fixes: b80fe1805eee ("telemetry: introduce backward compatibility")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 lib/librte_telemetry/telemetry.c        | 30 +++++++++++++++++++++++++++---
 lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
 2 files changed, 35 insertions(+), 5 deletions(-)

diff --git a/lib/librte_telemetry/telemetry.c b/lib/librte_telemetry/telemetry.c
index 7e08afd..e6a99f3 100644
--- a/lib/librte_telemetry/telemetry.c
+++ b/lib/librte_telemetry/telemetry.c
@@ -350,6 +350,7 @@ socket_listener(void *socket)
 {
 	while (1) {
 		pthread_t th;
+		int rc;
 		struct socket *s = (struct socket *)socket;
 		int s_accepted = accept(s->sock, NULL, NULL);
 		if (s_accepted < 0) {
@@ -366,7 +367,12 @@ socket_listener(void *socket)
 			__atomic_add_fetch(s->num_clients, 1,
 					__ATOMIC_RELAXED);
 		}
-		pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
+		rc = pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
+		if (rc != 0) {
+			TMTY_LOG(ERR, "Error with create client thread\n");
+			close(s_accepted);
+			return NULL;
+		}
 		pthread_detach(th);
 	}
 	return NULL;
@@ -425,6 +431,7 @@ static int
 telemetry_legacy_init(void)
 {
 	pthread_t t_old;
+	int rc;
 
 	if (num_legacy_callbacks == 1) {
 		TMTY_LOG(WARNING, "No legacy callbacks, legacy socket not created\n");
@@ -440,7 +447,15 @@ telemetry_legacy_init(void)
 	v1_socket.sock = create_socket(v1_socket.path);
 	if (v1_socket.sock < 0)
 		return -1;
-	pthread_create(&t_old, NULL, socket_listener, &v1_socket);
+	rc = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
+	if (rc != 0) {
+		TMTY_LOG(ERR, "Error with create thread for legacy socket\n");
+		close(v1_socket.sock);
+		v1_socket.sock = -1;
+		unlink(v1_socket.path);
+		v1_socket.path[0] = '\0';
+		return -1;
+	}
 	pthread_setaffinity_np(t_old, sizeof(*thread_cpuset), thread_cpuset);
 
 	TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n");
@@ -451,6 +466,7 @@ static int
 telemetry_v2_init(void)
 {
 	pthread_t t_new;
+	int rc;
 
 	v2_socket.num_clients = &v2_clients;
 	rte_telemetry_register_cmd("/", list_commands,
@@ -469,7 +485,15 @@ telemetry_v2_init(void)
 	v2_socket.sock = create_socket(v2_socket.path);
 	if (v2_socket.sock < 0)
 		return -1;
-	pthread_create(&t_new, NULL, socket_listener, &v2_socket);
+	rc = pthread_create(&t_new, NULL, socket_listener, &v2_socket);
+	if (rc != 0) {
+		TMTY_LOG(ERR, "Error with create thread for socket");
+		close(v2_socket.sock);
+		v2_socket.sock = -1;
+		unlink(v2_socket.path);
+		v2_socket.path[0] = '\0';
+		return -1;
+	}
 	pthread_setaffinity_np(t_new, sizeof(*thread_cpuset), thread_cpuset);
 	atexit(unlink_sockets);
 
diff --git a/lib/librte_telemetry/telemetry_legacy.c b/lib/librte_telemetry/telemetry_legacy.c
index 5e9af37..fd242bf 100644
--- a/lib/librte_telemetry/telemetry_legacy.c
+++ b/lib/librte_telemetry/telemetry_legacy.c
@@ -83,6 +83,7 @@ register_client(const char *cmd __rte_unused, const char *params,
 	pthread_t th;
 	char data[BUF_SIZE];
 	int fd;
+	int rc;
 	struct sockaddr_un addrs;
 #endif /* !RTE_EXEC_ENV_WINDOWS */
 
@@ -112,8 +113,13 @@ register_client(const char *cmd __rte_unused, const char *params,
 		close(fd);
 		return -1;
 	}
-	pthread_create(&th, NULL, &legacy_client_handler,
-			(void *)(uintptr_t)fd);
+	rc = pthread_create(&th, NULL, &legacy_client_handler,
+				(void *)(uintptr_t)fd);
+	if (rc != 0) {
+		perror("Failed to create legacy client thread\n");
+		close(fd);
+		return -1;
+	}
 #endif /* !RTE_EXEC_ENV_WINDOWS */
 	return 0;
 }
-- 
2.7.4

Re: [dpdk-dev] [PATCH v3 1/2] telemetry: fix missing check for thread creation

[David Marchand]

On Thu, Apr 15, 2021 at 1:50 PM Min Hu (Connor) <humin29@huawei.com> wrote:
> diff --git a/lib/librte_telemetry/telemetry.c b/lib/librte_telemetry/telemetry.c
> index 7e08afd..e6a99f3 100644
> --- a/lib/librte_telemetry/telemetry.c
> +++ b/lib/librte_telemetry/telemetry.c
> @@ -350,6 +350,7 @@ socket_listener(void *socket)
>  {
>         while (1) {
>                 pthread_t th;
> +               int rc;
>                 struct socket *s = (struct socket *)socket;
>                 int s_accepted = accept(s->sock, NULL, NULL);
>                 if (s_accepted < 0) {
> @@ -366,7 +367,12 @@ socket_listener(void *socket)
>                         __atomic_add_fetch(s->num_clients, 1,
>                                         __ATOMIC_RELAXED);
>                 }
> -               pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
> +               rc = pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
> +               if (rc != 0) {
> +                       TMTY_LOG(ERR, "Error with create client thread\n");
> +                       close(s_accepted);
> +                       return NULL;
> +               }

Repeating my comment:

Either you use this rc variable (adding strerror(rc) in the log
message in TMTY_LOG()) or you remove the variable and simply test if
(pthread_create(...) != 0).

This comment applies to other changes in this patch.
And this applies to patch 2 too.

>                 pthread_detach(th);
>         }
>         return NULL;

Thanks.


--
David Marchand

Re: [dpdk-dev] [PATCH v3 1/2] telemetry: fix missing check for thread creation

[Min Hu (Connor)]

Hi, David, fixed in v4. Thanks.

在 2021/4/15 22:55, David Marchand 写道:
> On Thu, Apr 15, 2021 at 1:50 PM Min Hu (Connor) <humin29@huawei.com> wrote:
>> diff --git a/lib/librte_telemetry/telemetry.c b/lib/librte_telemetry/telemetry.c
>> index 7e08afd..e6a99f3 100644
>> --- a/lib/librte_telemetry/telemetry.c
>> +++ b/lib/librte_telemetry/telemetry.c
>> @@ -350,6 +350,7 @@ socket_listener(void *socket)
>>   {
>>          while (1) {
>>                  pthread_t th;
>> +               int rc;
>>                  struct socket *s = (struct socket *)socket;
>>                  int s_accepted = accept(s->sock, NULL, NULL);
>>                  if (s_accepted < 0) {
>> @@ -366,7 +367,12 @@ socket_listener(void *socket)
>>                          __atomic_add_fetch(s->num_clients, 1,
>>                                          __ATOMIC_RELAXED);
>>                  }
>> -               pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
>> +               rc = pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
>> +               if (rc != 0) {
>> +                       TMTY_LOG(ERR, "Error with create client thread\n");
>> +                       close(s_accepted);
>> +                       return NULL;
>> +               }
> 
> Repeating my comment:
> 
> Either you use this rc variable (adding strerror(rc) in the log
> message in TMTY_LOG()) or you remove the variable and simply test if
> (pthread_create(...) != 0).
> 
> This comment applies to other changes in this patch.
> And this applies to patch 2 too.
> 
>>                  pthread_detach(th);
>>          }
>>          return NULL;
> 
> Thanks.
> 
> 
> --
> David Marchand
> 
> .
> 

Re: [dpdk-dev] [PATCH v3 1/2] telemetry: fix missing check for thread creation

[Power, Ciara]

Hi Connor, 

Thanks for looking at this. Left some comments inline.

Ciara

>-----Original Message-----
>From: Min Hu (Connor) <humin29@huawei.com>
>Sent: Thursday 15 April 2021 12:50
>To: dev@dpdk.org
>Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; Power, Ciara
><ciara.power@intel.com>; Pattan, Reshma <reshma.pattan@intel.com>;
>david.marchand@redhat.com
>Subject: [PATCH v3 1/2] telemetry: fix missing check for thread creation
>
>From: Chengwen Feng <fengchengwen@huawei.com>
>
>Add result check and message print out for thread creation after failure.
>
>Fixes: b80fe1805eee ("telemetry: introduce backward compatibility")
>Cc: stable@dpdk.org
>
>Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
>Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
>---
> lib/librte_telemetry/telemetry.c        | 30 +++++++++++++++++++++++++++-
>--
> lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
> 2 files changed, 35 insertions(+), 5 deletions(-)
>
>diff --git a/lib/librte_telemetry/telemetry.c
>b/lib/librte_telemetry/telemetry.c
>index 7e08afd..e6a99f3 100644
>--- a/lib/librte_telemetry/telemetry.c
>+++ b/lib/librte_telemetry/telemetry.c
>@@ -350,6 +350,7 @@ socket_listener(void *socket)  {
> 	while (1) {
> 		pthread_t th;
>+		int rc;
> 		struct socket *s = (struct socket *)socket;
> 		int s_accepted = accept(s->sock, NULL, NULL);
> 		if (s_accepted < 0) {
>@@ -366,7 +367,12 @@ socket_listener(void *socket)
> 			__atomic_add_fetch(s->num_clients, 1,
> 					__ATOMIC_RELAXED);
> 		}
>-		pthread_create(&th, NULL, s->fn, (void
>*)(uintptr_t)s_accepted);
>+		rc = pthread_create(&th, NULL, s->fn, (void
>*)(uintptr_t)s_accepted);
>+		if (rc != 0) {
>+			TMTY_LOG(ERR, "Error with create client thread\n");
>+			close(s_accepted);
>+			return NULL;


I think this should be "continue" instead of "return NULL" - if one client connection thread fails,
we probably want to keep listening for more clients rather than stop completely.

The "s->num_clients" counter should be decremented here too,
it gets incremented above when the connection is accepted, but if we are closing the connection,
the counter should reflect that.


>+		}
> 		pthread_detach(th);
> 	}
> 	return NULL;
>@@ -425,6 +431,7 @@ static int
> telemetry_legacy_init(void)
> {
> 	pthread_t t_old;
>+	int rc;
>
> 	if (num_legacy_callbacks == 1) {
> 		TMTY_LOG(WARNING, "No legacy callbacks, legacy socket not
>created\n"); @@ -440,7 +447,15 @@ telemetry_legacy_init(void)
> 	v1_socket.sock = create_socket(v1_socket.path);
> 	if (v1_socket.sock < 0)
> 		return -1;
>-	pthread_create(&t_old, NULL, socket_listener, &v1_socket);
>+	rc = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
>+	if (rc != 0) {
>+		TMTY_LOG(ERR, "Error with create thread for legacy
>socket\n");
>+		close(v1_socket.sock);
>+		v1_socket.sock = -1;
>+		unlink(v1_socket.path);
>+		v1_socket.path[0] = '\0';
>+		return -1;
>+	}
> 	pthread_setaffinity_np(t_old, sizeof(*thread_cpuset),
>thread_cpuset);
>
> 	TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n"); @@ -
>451,6 +466,7 @@ static int
> telemetry_v2_init(void)
> {
> 	pthread_t t_new;
>+	int rc;
>
> 	v2_socket.num_clients = &v2_clients;
> 	rte_telemetry_register_cmd("/", list_commands, @@ -469,7 +485,15
>@@ telemetry_v2_init(void)
> 	v2_socket.sock = create_socket(v2_socket.path);
> 	if (v2_socket.sock < 0)
> 		return -1;
>-	pthread_create(&t_new, NULL, socket_listener, &v2_socket);
>+	rc = pthread_create(&t_new, NULL, socket_listener, &v2_socket);
>+	if (rc != 0) {
>+		TMTY_LOG(ERR, "Error with create thread for socket");
>+		close(v2_socket.sock);
>+		v2_socket.sock = -1;
>+		unlink(v2_socket.path);
>+		v2_socket.path[0] = '\0';
>+		return -1;
>+	}
> 	pthread_setaffinity_np(t_new, sizeof(*thread_cpuset),
>thread_cpuset);
> 	atexit(unlink_sockets);
>
>diff --git a/lib/librte_telemetry/telemetry_legacy.c
>b/lib/librte_telemetry/telemetry_legacy.c
>index 5e9af37..fd242bf 100644
>--- a/lib/librte_telemetry/telemetry_legacy.c
>+++ b/lib/librte_telemetry/telemetry_legacy.c
>@@ -83,6 +83,7 @@ register_client(const char *cmd __rte_unused, const
>char *params,
> 	pthread_t th;
> 	char data[BUF_SIZE];
> 	int fd;
>+	int rc;
> 	struct sockaddr_un addrs;
> #endif /* !RTE_EXEC_ENV_WINDOWS */
>
>@@ -112,8 +113,13 @@ register_client(const char *cmd __rte_unused, const
>char *params,
> 		close(fd);
> 		return -1;
> 	}
>-	pthread_create(&th, NULL, &legacy_client_handler,
>-			(void *)(uintptr_t)fd);
>+	rc = pthread_create(&th, NULL, &legacy_client_handler,
>+				(void *)(uintptr_t)fd);
>+	if (rc != 0) {
>+		perror("Failed to create legacy client thread\n");
>+		close(fd);
>+		return -1;
>+	}
> #endif /* !RTE_EXEC_ENV_WINDOWS */
> 	return 0;
> }
>--
>2.7.4

Re: [dpdk-dev] [PATCH v3 1/2] telemetry: fix missing check for thread creation

[Min Hu (Connor)]

Thanks Power, v4 has been sent, please check it out.

在 2021/4/16 0:11, Power, Ciara 写道:
> Hi Connor,
> 
> Thanks for looking at this. Left some comments inline.
> 
> Ciara
> 
>> -----Original Message-----
>> From: Min Hu (Connor) <humin29@huawei.com>
>> Sent: Thursday 15 April 2021 12:50
>> To: dev@dpdk.org
>> Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; Power, Ciara
>> <ciara.power@intel.com>; Pattan, Reshma <reshma.pattan@intel.com>;
>> david.marchand@redhat.com
>> Subject: [PATCH v3 1/2] telemetry: fix missing check for thread creation
>>
>> From: Chengwen Feng <fengchengwen@huawei.com>
>>
>> Add result check and message print out for thread creation after failure.
>>
>> Fixes: b80fe1805eee ("telemetry: introduce backward compatibility")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
>> Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
>> ---
>> lib/librte_telemetry/telemetry.c        | 30 +++++++++++++++++++++++++++-
>> --
>> lib/librte_telemetry/telemetry_legacy.c | 10 ++++++++--
>> 2 files changed, 35 insertions(+), 5 deletions(-)
>>
>> diff --git a/lib/librte_telemetry/telemetry.c
>> b/lib/librte_telemetry/telemetry.c
>> index 7e08afd..e6a99f3 100644
>> --- a/lib/librte_telemetry/telemetry.c
>> +++ b/lib/librte_telemetry/telemetry.c
>> @@ -350,6 +350,7 @@ socket_listener(void *socket)  {
>> 	while (1) {
>> 		pthread_t th;
>> +		int rc;
>> 		struct socket *s = (struct socket *)socket;
>> 		int s_accepted = accept(s->sock, NULL, NULL);
>> 		if (s_accepted < 0) {
>> @@ -366,7 +367,12 @@ socket_listener(void *socket)
>> 			__atomic_add_fetch(s->num_clients, 1,
>> 					__ATOMIC_RELAXED);
>> 		}
>> -		pthread_create(&th, NULL, s->fn, (void
>> *)(uintptr_t)s_accepted);
>> +		rc = pthread_create(&th, NULL, s->fn, (void
>> *)(uintptr_t)s_accepted);
>> +		if (rc != 0) {
>> +			TMTY_LOG(ERR, "Error with create client thread\n");
>> +			close(s_accepted);
>> +			return NULL;
> 
> 
> I think this should be "continue" instead of "return NULL" - if one client connection thread fails,
> we probably want to keep listening for more clients rather than stop completely.
> 
> The "s->num_clients" counter should be decremented here too,
> it gets incremented above when the connection is accepted, but if we are closing the connection,
> the counter should reflect that.
> 
> 
>> +		}
>> 		pthread_detach(th);
>> 	}
>> 	return NULL;
>> @@ -425,6 +431,7 @@ static int
>> telemetry_legacy_init(void)
>> {
>> 	pthread_t t_old;
>> +	int rc;
>>
>> 	if (num_legacy_callbacks == 1) {
>> 		TMTY_LOG(WARNING, "No legacy callbacks, legacy socket not
>> created\n"); @@ -440,7 +447,15 @@ telemetry_legacy_init(void)
>> 	v1_socket.sock = create_socket(v1_socket.path);
>> 	if (v1_socket.sock < 0)
>> 		return -1;
>> -	pthread_create(&t_old, NULL, socket_listener, &v1_socket);
>> +	rc = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
>> +	if (rc != 0) {
>> +		TMTY_LOG(ERR, "Error with create thread for legacy
>> socket\n");
>> +		close(v1_socket.sock);
>> +		v1_socket.sock = -1;
>> +		unlink(v1_socket.path);
>> +		v1_socket.path[0] = '\0';
>> +		return -1;
>> +	}
>> 	pthread_setaffinity_np(t_old, sizeof(*thread_cpuset),
>> thread_cpuset);
>>
>> 	TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n"); @@ -
>> 451,6 +466,7 @@ static int
>> telemetry_v2_init(void)
>> {
>> 	pthread_t t_new;
>> +	int rc;
>>
>> 	v2_socket.num_clients = &v2_clients;
>> 	rte_telemetry_register_cmd("/", list_commands, @@ -469,7 +485,15
>> @@ telemetry_v2_init(void)
>> 	v2_socket.sock = create_socket(v2_socket.path);
>> 	if (v2_socket.sock < 0)
>> 		return -1;
>> -	pthread_create(&t_new, NULL, socket_listener, &v2_socket);
>> +	rc = pthread_create(&t_new, NULL, socket_listener, &v2_socket);
>> +	if (rc != 0) {
>> +		TMTY_LOG(ERR, "Error with create thread for socket");
>> +		close(v2_socket.sock);
>> +		v2_socket.sock = -1;
>> +		unlink(v2_socket.path);
>> +		v2_socket.path[0] = '\0';
>> +		return -1;
>> +	}
>> 	pthread_setaffinity_np(t_new, sizeof(*thread_cpuset),
>> thread_cpuset);
>> 	atexit(unlink_sockets);
>>
>> diff --git a/lib/librte_telemetry/telemetry_legacy.c
>> b/lib/librte_telemetry/telemetry_legacy.c
>> index 5e9af37..fd242bf 100644
>> --- a/lib/librte_telemetry/telemetry_legacy.c
>> +++ b/lib/librte_telemetry/telemetry_legacy.c
>> @@ -83,6 +83,7 @@ register_client(const char *cmd __rte_unused, const
>> char *params,
>> 	pthread_t th;
>> 	char data[BUF_SIZE];
>> 	int fd;
>> +	int rc;
>> 	struct sockaddr_un addrs;
>> #endif /* !RTE_EXEC_ENV_WINDOWS */
>>
>> @@ -112,8 +113,13 @@ register_client(const char *cmd __rte_unused, const
>> char *params,
>> 		close(fd);
>> 		return -1;
>> 	}
>> -	pthread_create(&th, NULL, &legacy_client_handler,
>> -			(void *)(uintptr_t)fd);
>> +	rc = pthread_create(&th, NULL, &legacy_client_handler,
>> +				(void *)(uintptr_t)fd);
>> +	if (rc != 0) {
>> +		perror("Failed to create legacy client thread\n");
>> +		close(fd);
>> +		return -1;
>> +	}
>> #endif /* !RTE_EXEC_ENV_WINDOWS */
>> 	return 0;
>> }
>> --
>> 2.7.4
> 
> .
> 

[dpdk-dev] [PATCH v3 2/2] test: fix missing check for thread creation

[Min Hu (Connor)]

From: Chengwen Feng <fengchengwen@huawei.com>

There was a call for thread create function without result check.
Add result check and message print out after failure.

Fixes: 086eb64db39e ("test/pdump: add unit test for pdump library")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 app/test/process.h | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/app/test/process.h b/app/test/process.h
index 27f1b1c..2a0a8da 100644
--- a/app/test/process.h
+++ b/app/test/process.h
@@ -48,6 +48,7 @@ process_dup(const char *const argv[], int numargs, const char *env_value)
 #ifdef RTE_LIB_PDUMP
 #ifdef RTE_NET_RING
 	pthread_t thread;
+	int rc;
 #endif
 #endif
 
@@ -126,8 +127,11 @@ process_dup(const char *const argv[], int numargs, const char *env_value)
 	/* parent process does a wait */
 #ifdef RTE_LIB_PDUMP
 #ifdef RTE_NET_RING
-	if ((strcmp(env_value, "run_pdump_server_tests") == 0))
-		pthread_create(&thread, NULL, &send_pkts, NULL);
+	if ((strcmp(env_value, "run_pdump_server_tests") == 0)) {
+		rc = pthread_create(&thread, NULL, &send_pkts, NULL);
+		if (rc != 0)
+			rte_panic("Cannot start send pkts thread\n");
+	}
 #endif
 #endif
 
-- 
2.7.4

Re: [dpdk-dev] [PATCH v3 2/2] test: fix missing check for thread creation

[Pattan, Reshma]

> -----Original Message-----
> From: Min Hu (Connor) <humin29@huawei.com>
> +	if ((strcmp(env_value, "run_pdump_server_tests") == 0)) {
> +		rc = pthread_create(&thread, NULL, &send_pkts, NULL);
> +		if (rc != 0)
> +			rte_panic("Cannot start send pkts thread\n");
> +	}


I think you still have not addressed the David comment on previous version of the patch. 
So , can you change this to  something like below

Option1)
rc = pthread_create(&thread, NULL, &send_pkts, NULL);
If ( rc ! = 0 )
{
	rte_panic("Cannot start send pkts thread : %s\n", strerror(rc));
}

Or 

Option2)
If ( pthread_create(&thread, NULL, &send_pkts, NULL) !=0 )
	rte_panic("Cannot start send pkts thread\n");


Also, 

>> test: fix missing check for thread creation
Change this subject line to  "test/pdump: fix missing check for thread creation"

Thanks,
Reshma

Re: [dpdk-dev] [PATCH v3 2/2] test: fix missing check for thread creation

[Min Hu (Connor)]

在 2021/4/16 1:05, Pattan, Reshma 写道:
> 
> 
>> -----Original Message-----
>> From: Min Hu (Connor) <humin29@huawei.com>
>> +	if ((strcmp(env_value, "run_pdump_server_tests") == 0)) {
>> +		rc = pthread_create(&thread, NULL, &send_pkts, NULL);
>> +		if (rc != 0)
>> +			rte_panic("Cannot start send pkts thread\n");
>> +	}
> 
> 
> I think you still have not addressed the David comment on previous version of the patch.
> So , can you change this to  something like below
> 
> Option1)
> rc = pthread_create(&thread, NULL, &send_pkts, NULL);
> If ( rc ! = 0 )
> {
> 	rte_panic("Cannot start send pkts thread : %s\n", strerror(rc));
> }
> 
> Or
> 
> Option2)
> If ( pthread_create(&thread, NULL, &send_pkts, NULL) !=0 )
> 	rte_panic("Cannot start send pkts thread\n");
> 
> 
> Also,
> 
>>> test: fix missing check for thread creation
> Change this subject line to  "test/pdump: fix missing check for thread creation"
> 
Hi, Pattan, fixed in v4, except for "test/pdump", if v4 is OK, please
modify it for me, @Ferruh, thanks.
> Thanks,
> Reshma
> 
> .
> 

Re: [dpdk-dev] [PATCH v3 2/2] test: fix missing check for thread creation

[Ferruh Yigit]

On 4/16/2021 9:21 AM, Min Hu (Connor) wrote:
> 
> 
> 在 2021/4/16 1:05, Pattan, Reshma 写道:
>>
>>
>>> -----Original Message-----
>>> From: Min Hu (Connor) <humin29@huawei.com>
>>> +    if ((strcmp(env_value, "run_pdump_server_tests") == 0)) {
>>> +        rc = pthread_create(&thread, NULL, &send_pkts, NULL);
>>> +        if (rc != 0)
>>> +            rte_panic("Cannot start send pkts thread\n");
>>> +    }
>>
>>
>> I think you still have not addressed the David comment on previous version of 
>> the patch.
>> So , can you change this to  something like below
>>
>> Option1)
>> rc = pthread_create(&thread, NULL, &send_pkts, NULL);
>> If ( rc ! = 0 )
>> {
>>     rte_panic("Cannot start send pkts thread : %s\n", strerror(rc));
>> }
>>
>> Or
>>
>> Option2)
>> If ( pthread_create(&thread, NULL, &send_pkts, NULL) !=0 )
>>     rte_panic("Cannot start send pkts thread\n");
>>
>>
>> Also,
>>
>>>> test: fix missing check for thread creation
>> Change this subject line to  "test/pdump: fix missing check for thread creation"
>>
> Hi, Pattan, fixed in v4, except for "test/pdump", if v4 is OK, please
> modify it for me, @Ferruh, thanks.

Hi Connor, this patch is on David's domain, he will commit the patch, not me.

Re: [dpdk-dev] [PATCH v3 2/2] test: fix missing check for thread creation

[Min Hu (Connor)]

在 2021/4/16 16:34, Ferruh Yigit 写道:
> On 4/16/2021 9:21 AM, Min Hu (Connor) wrote:
>>
>>
>> 在 2021/4/16 1:05, Pattan, Reshma 写道:
>>>
>>>
>>>> -----Original Message-----
>>>> From: Min Hu (Connor) <humin29@huawei.com>
>>>> +    if ((strcmp(env_value, "run_pdump_server_tests") == 0)) {
>>>> +        rc = pthread_create(&thread, NULL, &send_pkts, NULL);
>>>> +        if (rc != 0)
>>>> +            rte_panic("Cannot start send pkts thread\n");
>>>> +    }
>>>
>>>
>>> I think you still have not addressed the David comment on previous 
>>> version of the patch.
>>> So , can you change this to  something like below
>>>
>>> Option1)
>>> rc = pthread_create(&thread, NULL, &send_pkts, NULL);
>>> If ( rc ! = 0 )
>>> {
>>>     rte_panic("Cannot start send pkts thread : %s\n", strerror(rc));
>>> }
>>>
>>> Or
>>>
>>> Option2)
>>> If ( pthread_create(&thread, NULL, &send_pkts, NULL) !=0 )
>>>     rte_panic("Cannot start send pkts thread\n");
>>>
>>>
>>> Also,
>>>
>>>>> test: fix missing check for thread creation
>>> Change this subject line to  "test/pdump: fix missing check for 
>>> thread creation"
>>>
>> Hi, Pattan, fixed in v4, except for "test/pdump", if v4 is OK, please
>> modify it for me, @Ferruh, thanks.
> 
> Hi Connor, this patch is on David's domain, he will commit the patch, 
> not me.
Sorry for that, Ferruh, @David, thanks.
> .

[dpdk-dev] [PATCH v4 0/2] fix missing check for thread creation

[Min Hu (Connor)]

There exist some thread creation function without result check.

This set of patches add result check and message print out after
failure.

Chengwen Feng (2):
  telemetry: fix missing check for thread creation
  test: fix missing check for thread creation
---
v4:
* change error logging.

v3:
* modify return value check and error logging.

v2:
* fix compiling bugs of missig value.

 app/test/process.h                      | 10 +++++++--
 lib/librte_telemetry/telemetry.c        | 37 ++++++++++++++++++++++++++++++---
 lib/librte_telemetry/telemetry_legacy.c | 11 ++++++++--
 3 files changed, 51 insertions(+), 7 deletions(-)

-- 
2.7.4

[dpdk-dev] [PATCH v4 1/2] telemetry: fix missing check for thread creation

[Min Hu (Connor)]

From: Chengwen Feng <fengchengwen@huawei.com>

Add result check and message print out for thread creation after
failure.

Fixes: b80fe1805eee ("telemetry: introduce backward compatibility")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 lib/librte_telemetry/telemetry.c        | 37 ++++++++++++++++++++++++++++++---
 lib/librte_telemetry/telemetry_legacy.c | 11 ++++++++--
 2 files changed, 43 insertions(+), 5 deletions(-)

diff --git a/lib/librte_telemetry/telemetry.c b/lib/librte_telemetry/telemetry.c
index 7e08afd..08ce189 100644
--- a/lib/librte_telemetry/telemetry.c
+++ b/lib/librte_telemetry/telemetry.c
@@ -350,6 +350,7 @@ socket_listener(void *socket)
 {
 	while (1) {
 		pthread_t th;
+		int rc;
 		struct socket *s = (struct socket *)socket;
 		int s_accepted = accept(s->sock, NULL, NULL);
 		if (s_accepted < 0) {
@@ -366,7 +367,17 @@ socket_listener(void *socket)
 			__atomic_add_fetch(s->num_clients, 1,
 					__ATOMIC_RELAXED);
 		}
-		pthread_create(&th, NULL, s->fn, (void *)(uintptr_t)s_accepted);
+		rc = pthread_create(&th, NULL, s->fn,
+				    (void *)(uintptr_t)s_accepted);
+		if (rc != 0) {
+			TMTY_LOG(ERR, "Error with create client thread: %s\n",
+				 strerror(rc));
+			close(s_accepted);
+			if (s->num_clients != NULL)
+				__atomic_sub_fetch(s->num_clients, 1,
+						   __ATOMIC_RELAXED);
+			continue;
+		}
 		pthread_detach(th);
 	}
 	return NULL;
@@ -425,6 +436,7 @@ static int
 telemetry_legacy_init(void)
 {
 	pthread_t t_old;
+	int rc;
 
 	if (num_legacy_callbacks == 1) {
 		TMTY_LOG(WARNING, "No legacy callbacks, legacy socket not created\n");
@@ -440,7 +452,16 @@ telemetry_legacy_init(void)
 	v1_socket.sock = create_socket(v1_socket.path);
 	if (v1_socket.sock < 0)
 		return -1;
-	pthread_create(&t_old, NULL, socket_listener, &v1_socket);
+	rc = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
+	if (rc != 0) {
+		TMTY_LOG(ERR, "Error with create legcay socket thread: %s\n",
+			 strerror(rc));
+		close(v1_socket.sock);
+		v1_socket.sock = -1;
+		unlink(v1_socket.path);
+		v1_socket.path[0] = '\0';
+		return -1;
+	}
 	pthread_setaffinity_np(t_old, sizeof(*thread_cpuset), thread_cpuset);
 
 	TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n");
@@ -451,6 +472,7 @@ static int
 telemetry_v2_init(void)
 {
 	pthread_t t_new;
+	int rc;
 
 	v2_socket.num_clients = &v2_clients;
 	rte_telemetry_register_cmd("/", list_commands,
@@ -469,7 +491,16 @@ telemetry_v2_init(void)
 	v2_socket.sock = create_socket(v2_socket.path);
 	if (v2_socket.sock < 0)
 		return -1;
-	pthread_create(&t_new, NULL, socket_listener, &v2_socket);
+	rc = pthread_create(&t_new, NULL, socket_listener, &v2_socket);
+	if (rc != 0) {
+		TMTY_LOG(ERR, "Error with create socket thread: %s\n",
+			 strerror(rc));
+		close(v2_socket.sock);
+		v2_socket.sock = -1;
+		unlink(v2_socket.path);
+		v2_socket.path[0] = '\0';
+		return -1;
+	}
 	pthread_setaffinity_np(t_new, sizeof(*thread_cpuset), thread_cpuset);
 	atexit(unlink_sockets);
 
diff --git a/lib/librte_telemetry/telemetry_legacy.c b/lib/librte_telemetry/telemetry_legacy.c
index 5e9af37..b7cd1bd 100644
--- a/lib/librte_telemetry/telemetry_legacy.c
+++ b/lib/librte_telemetry/telemetry_legacy.c
@@ -83,6 +83,7 @@ register_client(const char *cmd __rte_unused, const char *params,
 	pthread_t th;
 	char data[BUF_SIZE];
 	int fd;
+	int rc;
 	struct sockaddr_un addrs;
 #endif /* !RTE_EXEC_ENV_WINDOWS */
 
@@ -112,8 +113,14 @@ register_client(const char *cmd __rte_unused, const char *params,
 		close(fd);
 		return -1;
 	}
-	pthread_create(&th, NULL, &legacy_client_handler,
-			(void *)(uintptr_t)fd);
+	rc = pthread_create(&th, NULL, &legacy_client_handler,
+				(void *)(uintptr_t)fd);
+	if (rc != 0) {
+		fprintf(stderr, "Failed to create legacy client thread: %s\n",
+			strerror(rc));
+		close(fd);
+		return -1;
+	}
 #endif /* !RTE_EXEC_ENV_WINDOWS */
 	return 0;
 }
-- 
2.7.4

Re: [dpdk-dev] [PATCH v4 1/2] telemetry: fix missing check for thread creation

[Power, Ciara]

Hi Connor,

>-----Original Message-----
>From: Min Hu (Connor) <humin29@huawei.com>
>Sent: Friday 16 April 2021 09:18
>To: dev@dpdk.org
>Cc: Yigit, Ferruh <ferruh.yigit@intel.com>; Power, Ciara
><ciara.power@intel.com>; Pattan, Reshma <reshma.pattan@intel.com>;
>david.marchand@redhat.com
>Subject: [PATCH v4 1/2] telemetry: fix missing check for thread creation
>
>From: Chengwen Feng <fengchengwen@huawei.com>
>
>Add result check and message print out for thread creation after failure.
>
>Fixes: b80fe1805eee ("telemetry: introduce backward compatibility")
>Cc: stable@dpdk.org
>
>Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
>Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
>---
> lib/librte_telemetry/telemetry.c        | 37
>++++++++++++++++++++++++++++++---
> lib/librte_telemetry/telemetry_legacy.c | 11 ++++++++--
> 2 files changed, 43 insertions(+), 5 deletions(-)
>
>diff --git a/lib/librte_telemetry/telemetry.c
>b/lib/librte_telemetry/telemetry.c
>index 7e08afd..08ce189 100644
>--- a/lib/librte_telemetry/telemetry.c
>+++ b/lib/librte_telemetry/telemetry.c
>@@ -350,6 +350,7 @@ socket_listener(void *socket)  {
> 	while (1) {
> 		pthread_t th;
>+		int rc;
> 		struct socket *s = (struct socket *)socket;
> 		int s_accepted = accept(s->sock, NULL, NULL);
> 		if (s_accepted < 0) {
>@@ -366,7 +367,17 @@ socket_listener(void *socket)
> 			__atomic_add_fetch(s->num_clients, 1,
> 					__ATOMIC_RELAXED);
> 		}
>-		pthread_create(&th, NULL, s->fn, (void
>*)(uintptr_t)s_accepted);
>+		rc = pthread_create(&th, NULL, s->fn,
>+				    (void *)(uintptr_t)s_accepted);
>+		if (rc != 0) {
>+			TMTY_LOG(ERR, "Error with create client thread:
>%s\n",
>+				 strerror(rc));
>+			close(s_accepted);
>+			if (s->num_clients != NULL)
>+				__atomic_sub_fetch(s->num_clients, 1,
>+						   __ATOMIC_RELAXED);
>+			continue;
>+		}
> 		pthread_detach(th);
> 	}
> 	return NULL;
>@@ -425,6 +436,7 @@ static int
> telemetry_legacy_init(void)
> {
> 	pthread_t t_old;
>+	int rc;
>
> 	if (num_legacy_callbacks == 1) {
> 		TMTY_LOG(WARNING, "No legacy callbacks, legacy socket
>not created\n"); @@ -440,7 +452,16 @@ telemetry_legacy_init(void)
> 	v1_socket.sock = create_socket(v1_socket.path);
> 	if (v1_socket.sock < 0)
> 		return -1;
>-	pthread_create(&t_old, NULL, socket_listener, &v1_socket);
>+	rc = pthread_create(&t_old, NULL, socket_listener, &v1_socket);
>+	if (rc != 0) {
>+		TMTY_LOG(ERR, "Error with create legcay socket thread:
>%s\n",
>+			 strerror(rc));
>+		close(v1_socket.sock);
>+		v1_socket.sock = -1;
>+		unlink(v1_socket.path);
>+		v1_socket.path[0] = '\0';
>+		return -1;
>+	}
> 	pthread_setaffinity_np(t_old, sizeof(*thread_cpuset), thread_cpuset);
>
> 	TMTY_LOG(DEBUG, "Legacy telemetry socket initialized ok\n"); @@
>-451,6 +472,7 @@ static int
> telemetry_v2_init(void)
> {
> 	pthread_t t_new;
>+	int rc;
>
> 	v2_socket.num_clients = &v2_clients;
> 	rte_telemetry_register_cmd("/", list_commands, @@ -469,7 +491,16
>@@ telemetry_v2_init(void)
> 	v2_socket.sock = create_socket(v2_socket.path);
> 	if (v2_socket.sock < 0)
> 		return -1;
>-	pthread_create(&t_new, NULL, socket_listener, &v2_socket);
>+	rc = pthread_create(&t_new, NULL, socket_listener, &v2_socket);
>+	if (rc != 0) {
>+		TMTY_LOG(ERR, "Error with create socket thread: %s\n",
>+			 strerror(rc));
>+		close(v2_socket.sock);
>+		v2_socket.sock = -1;
>+		unlink(v2_socket.path);
>+		v2_socket.path[0] = '\0';
>+		return -1;
>+	}
> 	pthread_setaffinity_np(t_new, sizeof(*thread_cpuset),
>thread_cpuset);
> 	atexit(unlink_sockets);
>
>diff --git a/lib/librte_telemetry/telemetry_legacy.c
>b/lib/librte_telemetry/telemetry_legacy.c
>index 5e9af37..b7cd1bd 100644
>--- a/lib/librte_telemetry/telemetry_legacy.c
>+++ b/lib/librte_telemetry/telemetry_legacy.c
>@@ -83,6 +83,7 @@ register_client(const char *cmd __rte_unused, const
>char *params,
> 	pthread_t th;
> 	char data[BUF_SIZE];
> 	int fd;
>+	int rc;
> 	struct sockaddr_un addrs;
> #endif /* !RTE_EXEC_ENV_WINDOWS */
>
>@@ -112,8 +113,14 @@ register_client(const char *cmd __rte_unused,
>const char *params,
> 		close(fd);
> 		return -1;
> 	}
>-	pthread_create(&th, NULL, &legacy_client_handler,
>-			(void *)(uintptr_t)fd);
>+	rc = pthread_create(&th, NULL, &legacy_client_handler,
>+				(void *)(uintptr_t)fd);
>+	if (rc != 0) {
>+		fprintf(stderr, "Failed to create legacy client thread: %s\n",
>+			strerror(rc));
>+		close(fd);
>+		return -1;
>+	}
> #endif /* !RTE_EXEC_ENV_WINDOWS */
> 	return 0;
> }
>--
>2.7.4

I think there is a Fixes tag missing for commit:
Fixes: 6dd571fd07c3 ("telemetry: introduce new functionality")

With that added in, the code changes look good to me,
Acked-by: Ciara Power <ciara.power@intel.com> 

Thanks!

[dpdk-dev] [PATCH v4 2/2] test: fix missing check for thread creation

[Min Hu (Connor)]

From: Chengwen Feng <fengchengwen@huawei.com>

There was a call for thread create function without result check.
Add result check and message print out after failure.

Fixes: 086eb64db39e ("test/pdump: add unit test for pdump library")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
Signed-off-by: Min Hu (Connor) <humin29@huawei.com>
---
 app/test/process.h | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/app/test/process.h b/app/test/process.h
index 27f1b1c..a09a088 100644
--- a/app/test/process.h
+++ b/app/test/process.h
@@ -48,6 +48,7 @@ process_dup(const char *const argv[], int numargs, const char *env_value)
 #ifdef RTE_LIB_PDUMP
 #ifdef RTE_NET_RING
 	pthread_t thread;
+	int rc;
 #endif
 #endif
 
@@ -126,8 +127,13 @@ process_dup(const char *const argv[], int numargs, const char *env_value)
 	/* parent process does a wait */
 #ifdef RTE_LIB_PDUMP
 #ifdef RTE_NET_RING
-	if ((strcmp(env_value, "run_pdump_server_tests") == 0))
-		pthread_create(&thread, NULL, &send_pkts, NULL);
+	if ((strcmp(env_value, "run_pdump_server_tests") == 0)) {
+		rc = pthread_create(&thread, NULL, &send_pkts, NULL);
+		if (rc != 0) {
+			rte_panic("Cannot start send pkts thread: %s\n",
+				  strerror(rc));
+		}
+	}
 #endif
 #endif
 
-- 
2.7.4

Re: [dpdk-dev] [PATCH v4 2/2] test: fix missing check for thread creation

[Pattan, Reshma]

> -----Original Message-----
> From: Min Hu (Connor) <humin29@huawei.com>
> Subject: [PATCH v4 2/2] test: fix missing check for thread creation
> 
> Fixes: 086eb64db39e ("test/pdump: add unit test for pdump library")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
> Signed-off-by: Min Hu (Connor) <humin29@huawei.com>


Acked-by: Reshma Pattan <reshma.pattan@intel.com>

Re: [dpdk-dev] [PATCH v4 0/2] fix missing check for thread creation

[Thomas Monjalon]

> Chengwen Feng (2):
>   telemetry: fix missing check for thread creation
>   test: fix missing check for thread creation

Applied, thanks