[dpdk-dev] [PATCH v3 12/13] eal: replace rte_panic instances in init sequence

[Arnon Warshavsky]

Local functions to this file,
changing from void to int are non-abi-breaking.
For handling the single function that cannot
change from void to int due to abi,
where this is the only place it is called in,
I added a state variable that is being checked
right after the call to this function.

Signed-off-by: Arnon Warshavsky <arnon at qwilt.com>
---
 lib/librte_eal/bsdapp/eal/eal.c           |  87 ++++++++++++++-------
 lib/librte_eal/bsdapp/eal/eal_thread.c    |  65 +++++++++++-----
 lib/librte_eal/common/eal_common_launch.c |  21 ++++++
 lib/librte_eal/common/include/rte_debug.h |  12 +++
 lib/librte_eal/linuxapp/eal/eal.c         | 121 ++++++++++++++++++++----------
 lib/librte_eal/linuxapp/eal/eal_thread.c  |  65 +++++++++++-----
 6 files changed, 272 insertions(+), 99 deletions(-)

diff --git a/lib/librte_eal/bsdapp/eal/eal.c b/lib/librte_eal/bsdapp/eal/eal.c
index 4eafcb5..f6aa3b2 100644
--- a/lib/librte_eal/bsdapp/eal/eal.c
+++ b/lib/librte_eal/bsdapp/eal/eal.c
@@ -150,7 +150,7 @@ enum rte_iova_mode
  * We also don't lock the whole file, so that in future we can use read-locks
  * on other parts, e.g. memzones, to detect if there are running secondary
  * processes. */
-static void
+static int
 rte_eal_config_create(void)
 {
 	void *rte_mem_cfg_addr;
@@ -159,60 +159,79 @@ enum rte_iova_mode
 	const char *pathname = eal_runtime_config_path();
 
 	if (internal_config.no_shconf)
-		return;
+		return 0;
 
 	if (mem_cfg_fd < 0){
 		mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
-		if (mem_cfg_fd < 0)
-			rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
+		if (mem_cfg_fd < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot open '%s' for rte_mem_config\n",
+					__func__, pathname);
+			return -1;
+		}
 	}
 
 	retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
 	if (retval < 0){
 		close(mem_cfg_fd);
-		rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
+		RTE_LOG(CRIT, EAL, "%s(): Cannot resize '%s' for rte_mem_config\n",
+				__func__, pathname);
+		return -1;
 	}
 
 	retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
 	if (retval < 0){
 		close(mem_cfg_fd);
-		rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
-				"process running?\n", pathname);
+		RTE_LOG(CRIT, EAL, "%s(): Cannot create lock on '%s'."
+				" Is another primary process running?\n",
+				__func__, pathname);
+		return -1;
 	}
 
 	rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
 				PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
 
 	if (rte_mem_cfg_addr == MAP_FAILED){
-		rte_panic("Cannot mmap memory for rte_config\n");
+		RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for rte_config\n",
+				__func__);
+		return -1;
 	}
 	memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
 	rte_config.mem_config = rte_mem_cfg_addr;
+
+	return 0;
 }
 
 /* attach to an existing shared memory config */
-static void
+static int
 rte_eal_config_attach(void)
 {
 	void *rte_mem_cfg_addr;
 	const char *pathname = eal_runtime_config_path();
 
 	if (internal_config.no_shconf)
-		return;
+		return 0;
 
 	if (mem_cfg_fd < 0){
 		mem_cfg_fd = open(pathname, O_RDWR);
-		if (mem_cfg_fd < 0)
-			rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
+		if (mem_cfg_fd < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot open '%s' for rte_mem_config\n",
+					__func__, pathname);
+			return -1;
+		}
 	}
 
 	rte_mem_cfg_addr = mmap(NULL, sizeof(*rte_config.mem_config),
 				PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
 	close(mem_cfg_fd);
-	if (rte_mem_cfg_addr == MAP_FAILED)
-		rte_panic("Cannot mmap memory for rte_config\n");
+	if (rte_mem_cfg_addr == MAP_FAILED) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for rte_config\n",
+				__func__);
+		return -1;
+	}
 
 	rte_config.mem_config = rte_mem_cfg_addr;
+
+	return 0;
 }
 
 /* Detect if we are a primary or a secondary process */
@@ -236,23 +255,28 @@ enum rte_proc_type_t
 }
 
 /* Sets up rte_config structure with the pointer to shared memory config.*/
-static void
+static int
 rte_config_init(void)
 {
 	rte_config.process_type = internal_config.process_type;
 
 	switch (rte_config.process_type){
 	case RTE_PROC_PRIMARY:
-		rte_eal_config_create();
+		if (rte_eal_config_create())
+			return -1;
 		break;
 	case RTE_PROC_SECONDARY:
-		rte_eal_config_attach();
+		if (rte_eal_config_attach())
+			return -1;
 		rte_eal_mcfg_wait_complete(rte_config.mem_config);
 		break;
 	case RTE_PROC_AUTO:
 	case RTE_PROC_INVALID:
-		rte_panic("Invalid process type\n");
+		RTE_LOG(CRIT, EAL, "%s(): Invalid process type %d\n",
+				__func__, rte_config.process_type);
+		return -1;
 	}
+	return 0;
 }
 
 /* display usage */
@@ -583,7 +607,8 @@ static void rte_eal_init_alert(const char *msg)
 
 	rte_srand(rte_rdtsc());
 
-	rte_config_init();
+	if (rte_config_init() != 0)
+		return -1;
 
 	if (rte_mp_channel_init() < 0) {
 		rte_eal_init_alert("failed to init mp channel\n");
@@ -630,7 +655,8 @@ static void rte_eal_init_alert(const char *msg)
 
 	eal_check_mem_on_local_socket();
 
-	eal_thread_init_master(rte_config.master_lcore);
+	if (eal_thread_init_master(rte_config.master_lcore) != 0)
+		return -1;
 
 	ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
 
@@ -644,18 +670,27 @@ static void rte_eal_init_alert(const char *msg)
 		 * create communication pipes between master thread
 		 * and children
 		 */
-		if (pipe(lcore_config[i].pipe_master2slave) < 0)
-			rte_panic("Cannot create pipe\n");
-		if (pipe(lcore_config[i].pipe_slave2master) < 0)
-			rte_panic("Cannot create pipe\n");
+		if (pipe(lcore_config[i].pipe_master2slave) < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot create pipe\n",
+					__func__);
+			return -1;
+		}
+		if (pipe(lcore_config[i].pipe_slave2master) < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot create pipe\n",
+					__func__);
+			return -1;
+		}
 
 		lcore_config[i].state = WAIT;
 
 		/* create a thread for each lcore */
 		ret = pthread_create(&lcore_config[i].thread_id, NULL,
 				     eal_thread_loop, NULL);
-		if (ret != 0)
-			rte_panic("Cannot create thread\n");
+		if (ret != 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot create thread\n",
+					__func__);
+			return -1;
+		}
 
 		/* Set thread_name for aid in debugging. */
 		snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
diff --git a/lib/librte_eal/bsdapp/eal/eal_thread.c b/lib/librte_eal/bsdapp/eal/eal_thread.c
index d602daf..5c3947c 100644
--- a/lib/librte_eal/bsdapp/eal/eal_thread.c
+++ b/lib/librte_eal/bsdapp/eal/eal_thread.c
@@ -51,16 +51,22 @@
 	n = 0;
 	while (n == 0 || (n < 0 && errno == EINTR))
 		n = write(m2s, &c, 1);
-	if (n < 0)
-		rte_panic("cannot write on configuration pipe\n");
+	if (n < 0) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot write on configuration pipe\n",
+				__func__);
+		return -1;
+	}
 
 	/* wait ack */
 	do {
 		n = read(s2m, &c, 1);
 	} while (n < 0 && errno == EINTR);
 
-	if (n <= 0)
-		rte_panic("cannot read on configuration pipe\n");
+	if (n <= 0) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot read on configuration pipe\n",
+				__func__);
+		return -1;
+	}
 
 	return 0;
 }
@@ -84,8 +90,19 @@ void eal_thread_init_master(unsigned lcore_id)
 	RTE_PER_LCORE(_lcore_id) = lcore_id;
 
 	/* set CPU affinity */
-	if (eal_thread_set_affinity() < 0)
-		rte_panic("cannot set affinity\n");
+	if (eal_thread_set_affinity() < 0) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot set affinity\n", __func__);
+		rte_move_to_panic_state();
+	}
+}
+
+/* move to panic state and do not return */
+static __attribute__((noreturn)) void
+defunct_and_remain_in_endless_loop(void)
+{
+	rte_move_to_panic_state();
+	while (1)
+		sleep(1);
 }
 
 /* main loop of threads */
@@ -106,8 +123,11 @@ void eal_thread_init_master(unsigned lcore_id)
 		if (thread_id == lcore_config[lcore_id].thread_id)
 			break;
 	}
-	if (lcore_id == RTE_MAX_LCORE)
-		rte_panic("cannot retrieve lcore id\n");
+	if (lcore_id == RTE_MAX_LCORE) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot retrieve lcore id\n",
+				__func__);
+		defunct_and_remain_in_endless_loop();
+	}
 
 	m2s = lcore_config[lcore_id].pipe_master2slave[0];
 	s2m = lcore_config[lcore_id].pipe_slave2master[1];
@@ -116,8 +136,10 @@ void eal_thread_init_master(unsigned lcore_id)
 	RTE_PER_LCORE(_lcore_id) = lcore_id;
 
 	/* set CPU affinity */
-	if (eal_thread_set_affinity() < 0)
-		rte_panic("cannot set affinity\n");
+	if (eal_thread_set_affinity() < 0) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot set affinity\n", __func__);
+		defunct_and_remain_in_endless_loop();
+	}
 
 	ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
 
@@ -133,8 +155,11 @@ void eal_thread_init_master(unsigned lcore_id)
 			n = read(m2s, &c, 1);
 		} while (n < 0 && errno == EINTR);
 
-		if (n <= 0)
-			rte_panic("cannot read on configuration pipe\n");
+		if (n <= 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot read on configuration pipe\n",
+					__func__);
+			defunct_and_remain_in_endless_loop();
+		}
 
 		lcore_config[lcore_id].state = RUNNING;
 
@@ -142,11 +167,17 @@ void eal_thread_init_master(unsigned lcore_id)
 		n = 0;
 		while (n == 0 || (n < 0 && errno == EINTR))
 			n = write(s2m, &c, 1);
-		if (n < 0)
-			rte_panic("cannot write on configuration pipe\n");
-
-		if (lcore_config[lcore_id].f == NULL)
-			rte_panic("NULL function pointer\n");
+		if (n < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot write on configuration pipe\n",
+					__func__);
+			defunct_and_remain_in_endless_loop();
+		}
+
+		if (lcore_config[lcore_id].f == NULL) {
+			RTE_LOG(CRIT, EAL, "%s(): NULL function pointer\n",
+					__func__);
+			defunct_and_remain_in_endless_loop();
+		}
 
 		/* call the function and store the return value */
 		fct_arg = lcore_config[lcore_id].arg;
diff --git a/lib/librte_eal/common/eal_common_launch.c b/lib/librte_eal/common/eal_common_launch.c
index fe0ba3f..6f8bd46 100644
--- a/lib/librte_eal/common/eal_common_launch.c
+++ b/lib/librte_eal/common/eal_common_launch.c
@@ -14,6 +14,7 @@
 #include <rte_pause.h>
 #include <rte_per_lcore.h>
 #include <rte_lcore.h>
+#include <rte_debug.h>
 
 /*
  * Wait until a lcore finished its job.
@@ -88,3 +89,23 @@ enum rte_lcore_state_t
 		rte_eal_wait_lcore(lcore_id);
 	}
 }
+
+/* panic state */
+static int _panic_state;
+
+/**
+ * Check if the system is in panic state
+ * @return int
+ */
+int rte_get_panic_state(void)
+{
+	return _panic_state;
+}
+
+/**
+ * Move the system to be in panic state
+ */
+void rte_move_to_panic_state(void)
+{
+	_panic_state = 1;
+}
diff --git a/lib/librte_eal/common/include/rte_debug.h b/lib/librte_eal/common/include/rte_debug.h
index 272df49..b421d33 100644
--- a/lib/librte_eal/common/include/rte_debug.h
+++ b/lib/librte_eal/common/include/rte_debug.h
@@ -79,4 +79,16 @@ void __rte_panic(const char *funcname , const char *format, ...)
 }
 #endif
 
+/**
+ * Check if the system is in panic state
+ * @return int
+ */
+int rte_get_panic_state(void);
+
+/**
+ * Move the system to be in panic state
+ */
+void rte_move_to_panic_state(void);
+
+
 #endif /* _RTE_DEBUG_H_ */
diff --git a/lib/librte_eal/linuxapp/eal/eal.c b/lib/librte_eal/linuxapp/eal/eal.c
index 2ecd07b..b7b950a 100644
--- a/lib/librte_eal/linuxapp/eal/eal.c
+++ b/lib/librte_eal/linuxapp/eal/eal.c
@@ -160,7 +160,7 @@ enum rte_iova_mode
  * We also don't lock the whole file, so that in future we can use read-locks
  * on other parts, e.g. memzones, to detect if there are running secondary
  * processes. */
-static void
+static int
 rte_eal_config_create(void)
 {
 	void *rte_mem_cfg_addr;
@@ -169,7 +169,7 @@ enum rte_iova_mode
 	const char *pathname = eal_runtime_config_path();
 
 	if (internal_config.no_shconf)
-		return;
+		return 0;
 
 	/* map the config before hugepage address so that we don't waste a page */
 	if (internal_config.base_virtaddr != 0)
@@ -179,30 +179,39 @@ enum rte_iova_mode
 	else
 		rte_mem_cfg_addr = NULL;
 
-	if (mem_cfg_fd < 0){
+	if (mem_cfg_fd < 0) {
 		mem_cfg_fd = open(pathname, O_RDWR | O_CREAT, 0660);
-		if (mem_cfg_fd < 0)
-			rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
+		if (mem_cfg_fd < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot open '%s' for "
+					"rte_mem_config\n", __func__, pathname);
+			return -1;
+		}
 	}
 
 	retval = ftruncate(mem_cfg_fd, sizeof(*rte_config.mem_config));
-	if (retval < 0){
+	if (retval < 0) {
 		close(mem_cfg_fd);
-		rte_panic("Cannot resize '%s' for rte_mem_config\n", pathname);
+		RTE_LOG(CRIT, EAL, "%s(): Cannot resize '%s' for rte_mem_config\n",
+				__func__, pathname);
+		return -1;
 	}
 
 	retval = fcntl(mem_cfg_fd, F_SETLK, &wr_lock);
-	if (retval < 0){
+	if (retval < 0) {
 		close(mem_cfg_fd);
-		rte_exit(EXIT_FAILURE, "Cannot create lock on '%s'. Is another primary "
-				"process running?\n", pathname);
+		RTE_LOG(CRIT, EAL, "%s(): Cannot create lock on '%s'."
+				" Is another primary process running?\n",
+				__func__, pathname);
+		return -1;
 	}
 
 	rte_mem_cfg_addr = mmap(rte_mem_cfg_addr, sizeof(*rte_config.mem_config),
 				PROT_READ | PROT_WRITE, MAP_SHARED, mem_cfg_fd, 0);
 
-	if (rte_mem_cfg_addr == MAP_FAILED){
-		rte_panic("Cannot mmap memory for rte_config\n");
+	if (rte_mem_cfg_addr == MAP_FAILED) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for "
+				"rte_config\n", __func__);
+		return -1;
 	}
 	memcpy(rte_mem_cfg_addr, &early_mem_config, sizeof(early_mem_config));
 	rte_config.mem_config = rte_mem_cfg_addr;
@@ -211,10 +220,11 @@ enum rte_iova_mode
 	 * processes could later map the config into this exact location */
 	rte_config.mem_config->mem_cfg_addr = (uintptr_t) rte_mem_cfg_addr;
 
+	return 0;
 }
 
 /* attach to an existing shared memory config */
-static void
+static int
 rte_eal_config_attach(void)
 {
 	struct rte_mem_config *mem_config;
@@ -222,33 +232,41 @@ enum rte_iova_mode
 	const char *pathname = eal_runtime_config_path();
 
 	if (internal_config.no_shconf)
-		return;
+		return 0;
 
-	if (mem_cfg_fd < 0){
+	if (mem_cfg_fd < 0) {
 		mem_cfg_fd = open(pathname, O_RDWR);
-		if (mem_cfg_fd < 0)
-			rte_panic("Cannot open '%s' for rte_mem_config\n", pathname);
+		if (mem_cfg_fd < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot open '%s' for rte_mem_config\n",
+						__func__, pathname);
+			return -1;
+		}
 	}
 
 	/* map it as read-only first */
 	mem_config = (struct rte_mem_config *) mmap(NULL, sizeof(*mem_config),
 			PROT_READ, MAP_SHARED, mem_cfg_fd, 0);
-	if (mem_config == MAP_FAILED)
-		rte_panic("Cannot mmap memory for rte_config! error %i (%s)\n",
-			  errno, strerror(errno));
+	if (mem_config == MAP_FAILED) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for "
+				"rte_config! error %i (%s)\n",
+				__func__, errno, strerror(errno));
+		return -1;
+	}
 
 	rte_config.mem_config = mem_config;
+
+	return 0;
 }
 
 /* reattach the shared config at exact memory location primary process has it */
-static void
+static int
 rte_eal_config_reattach(void)
 {
 	struct rte_mem_config *mem_config;
 	void *rte_mem_cfg_addr;
 
 	if (internal_config.no_shconf)
-		return;
+		return 0;
 
 	/* save the address primary process has mapped shared config to */
 	rte_mem_cfg_addr = (void *) (uintptr_t) rte_config.mem_config->mem_cfg_addr;
@@ -263,16 +281,21 @@ enum rte_iova_mode
 	if (mem_config == MAP_FAILED || mem_config != rte_mem_cfg_addr) {
 		if (mem_config != MAP_FAILED)
 			/* errno is stale, don't use */
-			rte_panic("Cannot mmap memory for rte_config at [%p], got [%p]"
-				  " - please use '--base-virtaddr' option\n",
-				  rte_mem_cfg_addr, mem_config);
+			RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for "
+					"rte_config at [%p], got [%p] - please use "
+					"'--base-virtaddr' option\n",
+					__func__, rte_mem_cfg_addr, mem_config);
 		else
-			rte_panic("Cannot mmap memory for rte_config! error %i (%s)\n",
-				  errno, strerror(errno));
+			RTE_LOG(CRIT, EAL, "%s(): Cannot mmap memory for "
+					"rte_config! error %i (%s)\n",
+					__func__, errno, strerror(errno));
+		return -1;
 	}
 	close(mem_cfg_fd);
 
 	rte_config.mem_config = mem_config;
+
+	return 0;
 }
 
 /* Detect if we are a primary or a secondary process */
@@ -296,24 +319,31 @@ enum rte_proc_type_t
 }
 
 /* Sets up rte_config structure with the pointer to shared memory config.*/
-static void
+static int
 rte_config_init(void)
 {
 	rte_config.process_type = internal_config.process_type;
 
 	switch (rte_config.process_type){
 	case RTE_PROC_PRIMARY:
-		rte_eal_config_create();
+		if (rte_eal_config_create() != 0)
+			return -1;
 		break;
 	case RTE_PROC_SECONDARY:
-		rte_eal_config_attach();
+		if (rte_eal_config_attach() != 0)
+			return -1;
 		rte_eal_mcfg_wait_complete(rte_config.mem_config);
-		rte_eal_config_reattach();
+		if (rte_eal_config_reattach() != 0)
+			return -1;
 		break;
 	case RTE_PROC_AUTO:
 	case RTE_PROC_INVALID:
-		rte_panic("Invalid process type\n");
+		RTE_LOG(CRIT, EAL, "%s(): Invalid process type %d\n",
+				__func__, rte_config.process_type);
+		return -1;
 	}
+
+	return 0;
 }
 
 /* Unlocks hugepage directories that were locked by eal_hugepage_info_init */
@@ -827,7 +857,8 @@ static void rte_eal_init_alert(const char *msg)
 
 	rte_srand(rte_rdtsc());
 
-	rte_config_init();
+	if (rte_config_init() != 0)
+		return -1;
 
 	if (rte_eal_log_init(logid, internal_config.syslog_facility) < 0) {
 		rte_eal_init_alert("Cannot init logging.");
@@ -890,6 +921,9 @@ static void rte_eal_init_alert(const char *msg)
 
 	eal_thread_init_master(rte_config.master_lcore);
 
+	if (rte_get_panic_state())
+		return -1;
+
 	ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
 
 	RTE_LOG(DEBUG, EAL, "Master lcore %u is ready (tid=%x;cpuset=[%s%s])\n",
@@ -907,18 +941,27 @@ static void rte_eal_init_alert(const char *msg)
 		 * create communication pipes between master thread
 		 * and children
 		 */
-		if (pipe(lcore_config[i].pipe_master2slave) < 0)
-			rte_panic("Cannot create pipe\n");
-		if (pipe(lcore_config[i].pipe_slave2master) < 0)
-			rte_panic("Cannot create pipe\n");
+		if (pipe(lcore_config[i].pipe_master2slave) < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot create pipe\n",
+					__func__);
+			return -1;
+		}
+		if (pipe(lcore_config[i].pipe_slave2master) < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot create pipe\n",
+					__func__);
+			return -1;
+		}
 
 		lcore_config[i].state = WAIT;
 
 		/* create a thread for each lcore */
 		ret = pthread_create(&lcore_config[i].thread_id, NULL,
 				     eal_thread_loop, NULL);
-		if (ret != 0)
-			rte_panic("Cannot create thread\n");
+		if (ret != 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot create thread\n",
+					__func__);
+			return -1;
+		}
 
 		/* Set thread_name for aid in debugging. */
 		snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN,
diff --git a/lib/librte_eal/linuxapp/eal/eal_thread.c b/lib/librte_eal/linuxapp/eal/eal_thread.c
index 08e150b..3afcee5 100644
--- a/lib/librte_eal/linuxapp/eal/eal_thread.c
+++ b/lib/librte_eal/linuxapp/eal/eal_thread.c
@@ -51,16 +51,22 @@
 	n = 0;
 	while (n == 0 || (n < 0 && errno == EINTR))
 		n = write(m2s, &c, 1);
-	if (n < 0)
-		rte_panic("cannot write on configuration pipe\n");
+	if (n < 0) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot write on configuration pipe\n",
+				__func__);
+		return -1;
+	}
 
 	/* wait ack */
 	do {
 		n = read(s2m, &c, 1);
 	} while (n < 0 && errno == EINTR);
 
-	if (n <= 0)
-		rte_panic("cannot read on configuration pipe\n");
+	if (n <= 0) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot read on configuration pipe\n",
+				__func__);
+		return -1;
+	}
 
 	return 0;
 }
@@ -84,8 +90,19 @@ void eal_thread_init_master(unsigned lcore_id)
 	RTE_PER_LCORE(_lcore_id) = lcore_id;
 
 	/* set CPU affinity */
-	if (eal_thread_set_affinity() < 0)
-		rte_panic("cannot set affinity\n");
+	if (eal_thread_set_affinity() < 0) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot set affinity\n", __func__);
+		rte_move_to_panic_state();
+	}
+}
+
+/* move to panic state and do not return */
+static __attribute__((noreturn)) void
+defunct_and_remain_in_endless_loop(void)
+{
+	rte_move_to_panic_state();
+	while (1)
+		sleep(1);
 }
 
 /* main loop of threads */
@@ -106,8 +123,11 @@ void eal_thread_init_master(unsigned lcore_id)
 		if (thread_id == lcore_config[lcore_id].thread_id)
 			break;
 	}
-	if (lcore_id == RTE_MAX_LCORE)
-		rte_panic("cannot retrieve lcore id\n");
+	if (lcore_id == RTE_MAX_LCORE) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot retrieve lcore id\n",
+				__func__);
+		defunct_and_remain_in_endless_loop();
+	}
 
 	m2s = lcore_config[lcore_id].pipe_master2slave[0];
 	s2m = lcore_config[lcore_id].pipe_slave2master[1];
@@ -116,8 +136,10 @@ void eal_thread_init_master(unsigned lcore_id)
 	RTE_PER_LCORE(_lcore_id) = lcore_id;
 
 	/* set CPU affinity */
-	if (eal_thread_set_affinity() < 0)
-		rte_panic("cannot set affinity\n");
+	if (eal_thread_set_affinity() < 0) {
+		RTE_LOG(CRIT, EAL, "%s(): Cannot set affinity\n", __func__);
+		defunct_and_remain_in_endless_loop();
+	}
 
 	ret = eal_thread_dump_affinity(cpuset, RTE_CPU_AFFINITY_STR_LEN);
 
@@ -133,8 +155,11 @@ void eal_thread_init_master(unsigned lcore_id)
 			n = read(m2s, &c, 1);
 		} while (n < 0 && errno == EINTR);
 
-		if (n <= 0)
-			rte_panic("cannot read on configuration pipe\n");
+		if (n <= 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot read on configuration pipe\n",
+					__func__);
+			defunct_and_remain_in_endless_loop();
+		}
 
 		lcore_config[lcore_id].state = RUNNING;
 
@@ -142,11 +167,17 @@ void eal_thread_init_master(unsigned lcore_id)
 		n = 0;
 		while (n == 0 || (n < 0 && errno == EINTR))
 			n = write(s2m, &c, 1);
-		if (n < 0)
-			rte_panic("cannot write on configuration pipe\n");
-
-		if (lcore_config[lcore_id].f == NULL)
-			rte_panic("NULL function pointer\n");
+		if (n < 0) {
+			RTE_LOG(CRIT, EAL, "%s(): Cannot write on configuration pipe\n",
+					__func__);
+			defunct_and_remain_in_endless_loop();
+		}
+
+		if (lcore_config[lcore_id].f == NULL) {
+			RTE_LOG(CRIT, EAL, "%s(): NULL function pointer\n",
+					__func__);
+			defunct_and_remain_in_endless_loop();
+		}
 
 		/* call the function and store the return value */
 		fct_arg = lcore_config[lcore_id].arg;
-- 
1.8.3.1