[dpdk-dev] [PATCH] lib: fix to free trail queue entry after use

[dpdk-dev] [PATCH] lib: fix to free trail queue entry after use

[Hari Kumar Vemula]

In rte_efd_create() allocated memory for trail queue entry but
not freed.
Added freeing the trail queue entry.

Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
Cc: stable@dpdk.org

Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
---
 lib/librte_efd/rte_efd.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c
index a780e2fe8..f8c6c447f 100644
--- a/lib/librte_efd/rte_efd.c
+++ b/lib/librte_efd/rte_efd.c
@@ -739,17 +739,38 @@ void
 rte_efd_free(struct rte_efd_table *table)
 {
 	uint8_t socket_id;
+	struct rte_efd_list *efd_list = NULL;
+	struct rte_tailq_entry *te;
 
 	if (table == NULL)
 		return;
 
+	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
+
 	for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
 		rte_free(table->chunks[socket_id]);
 
+	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
+
+	/* find our tailq entry */
+	TAILQ_FOREACH(te, efd_list, next) {
+		if (te->data == (void *) table)
+			break;
+	}
+
+	if (te == NULL) {
+		rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
+		return;
+	}
+
+	TAILQ_REMOVE(efd_list, te, next);
+	rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
+
 	rte_ring_free(table->free_slots);
 	rte_free(table->offline_chunks);
 	rte_free(table->keys);
 	rte_free(table);
+	rte_free(te);
 }
 
 /**
-- 
2.13.6

Re: [dpdk-dev] [PATCH] lib: fix to free trail queue entry after use

[Pattan, Reshma]

> -----Original Message-----
> From: Vemula, Hari KumarX
> Sent: Tuesday, November 13, 2018 11:46 AM
> To: dev@dpdk.org
> Cc: Pattan, Reshma <reshma.pattan@intel.com>; Marohn, Byron
> <byron.marohn@intel.com>; De Lara Guarch, Pablo
> <pablo.de.lara.guarch@intel.com>; Vemula, Hari KumarX
> <hari.kumarx.vemula@intel.com>; stable@dpdk.org
> Subject: [PATCH] lib: fix to free trail queue entry after use

Nit: heading should have lib/efd: 

Other than that   

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

[dpdk-dev] [PATCH v2] lib/efd: fix to free tail queue entry after use

[Hari Kumar Vemula]

In rte_efd_create() allocated memory for tail queue entry but
not freed.
Added freeing the tail queue entry.

Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
Cc: stable@dpdk.org

Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
Acked-by: Reshma Pattan <reshma.pattan@intel.com>

---
v2: Updated commit message.
---

 lib/librte_efd/rte_efd.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c
index a780e2fe8..f8c6c447f 100644
--- a/lib/librte_efd/rte_efd.c
+++ b/lib/librte_efd/rte_efd.c
@@ -739,17 +739,38 @@ void
 rte_efd_free(struct rte_efd_table *table)
 {
 	uint8_t socket_id;
+	struct rte_efd_list *efd_list = NULL;
+	struct rte_tailq_entry *te;
 
 	if (table == NULL)
 		return;
 
+	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
+
 	for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
 		rte_free(table->chunks[socket_id]);
 
+	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
+
+	/* find our tailq entry */
+	TAILQ_FOREACH(te, efd_list, next) {
+		if (te->data == (void *) table)
+			break;
+	}
+
+	if (te == NULL) {
+		rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
+		return;
+	}
+
+	TAILQ_REMOVE(efd_list, te, next);
+	rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
+
 	rte_ring_free(table->free_slots);
 	rte_free(table->offline_chunks);
 	rte_free(table->keys);
 	rte_free(table);
+	rte_free(te);
 }
 
 /**
-- 
2.13.6

Re: [dpdk-dev] [PATCH v2] lib/efd: fix to free tail queue entry after use

[Thomas Monjalon]

This patch is not trivial, it may require an ack from a maintainer,
Pablo is unavailable this month.
Byron, any comment please?

14/11/2018 12:17, Hari Kumar Vemula:
> In rte_efd_create() allocated memory for tail queue entry but
> not freed.
> Added freeing the tail queue entry.
> 
> Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
> Acked-by: Reshma Pattan <reshma.pattan@intel.com>

Re: [dpdk-dev] [PATCH v2] lib/efd: fix to free tail queue entry after use

[Maxime Coquelin]

On 11/14/18 12:17 PM, Hari Kumar Vemula wrote:
> In rte_efd_create() allocated memory for tail queue entry but
> not freed.
> Added freeing the tail queue entry.
> 
> Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
> Acked-by: Reshma Pattan <reshma.pattan@intel.com>
> 
> ---
> v2: Updated commit message.
> ---
> 
>   lib/librte_efd/rte_efd.c | 21 +++++++++++++++++++++
>   1 file changed, 21 insertions(+)
> 
> diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c
> index a780e2fe8..f8c6c447f 100644
> --- a/lib/librte_efd/rte_efd.c
> +++ b/lib/librte_efd/rte_efd.c
> @@ -739,17 +739,38 @@ void
>   rte_efd_free(struct rte_efd_table *table)
>   {
>   	uint8_t socket_id;
> +	struct rte_efd_list *efd_list = NULL;

NULL init seems useless here.

> +	struct rte_tailq_entry *te;
>   
>   	if (table == NULL)
>   		return;
>   
> +	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
> +
>   	for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
>   		rte_free(table->chunks[socket_id]);
>   
> +	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
> +
> +	/* find our tailq entry */
> +	TAILQ_FOREACH(te, efd_list, next) {
> +		if (te->data == (void *) table)
> +			break;
> +	}
> +
> +	if (te == NULL) {
> +		rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
> +		return;
> +	}
> +
> +	TAILQ_REMOVE(efd_list, te, next);
> +	rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);

Wouldn't this be simpler by using TAILQ_FOREACH_SAFE() instead?
The element could removed from the list and freed within the loop.

> +
>   	rte_ring_free(table->free_slots);
>   	rte_free(table->offline_chunks);
>   	rte_free(table->keys);
>   	rte_free(table);
> +	rte_free(te);
>   }
>   
>   /**
> 

Re: [dpdk-dev] [PATCH v2] lib/efd: fix to free tail queue entry after use

[Maxime Coquelin]

On 11/23/18 2:30 PM, Maxime Coquelin wrote:
> 
> 
> On 11/14/18 12:17 PM, Hari Kumar Vemula wrote:
>> In rte_efd_create() allocated memory for tail queue entry but
>> not freed.
>> Added freeing the tail queue entry.
>>
>> Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
>> Cc: stable@dpdk.org
>>
>> Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
>> Acked-by: Reshma Pattan <reshma.pattan@intel.com>
>>
>> ---
>> v2: Updated commit message.
>> ---
>>
>>   lib/librte_efd/rte_efd.c | 21 +++++++++++++++++++++
>>   1 file changed, 21 insertions(+)
>>
>> diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c
>> index a780e2fe8..f8c6c447f 100644
>> --- a/lib/librte_efd/rte_efd.c
>> +++ b/lib/librte_efd/rte_efd.c
>> @@ -739,17 +739,38 @@ void
>>   rte_efd_free(struct rte_efd_table *table)
>>   {
>>       uint8_t socket_id;
>> +    struct rte_efd_list *efd_list = NULL;
> 
> NULL init seems useless here.
> 
>> +    struct rte_tailq_entry *te;
>>       if (table == NULL)
>>           return;
>> +    efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
>> +
>>       for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
>>           rte_free(table->chunks[socket_id]);
>> +    rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
>> +
>> +    /* find our tailq entry */
>> +    TAILQ_FOREACH(te, efd_list, next) {
>> +        if (te->data == (void *) table)
>> +            break;
>> +    }
>> +
>> +    if (te == NULL) {
>> +        rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
>> +        return;

And in this case, I think there is a leak, as all table stuffs don't get
freed.

>> +    }
>> +
>> +    TAILQ_REMOVE(efd_list, te, next);
>> +    rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
> 
> Wouldn't this be simpler by using TAILQ_FOREACH_SAFE() instead?
> The element could removed from the list and freed within the loop.
> 
>> +
>>       rte_ring_free(table->free_slots);
>>       rte_free(table->offline_chunks);
>>       rte_free(table->keys);
>>       rte_free(table);
>> +    rte_free(te);
>>   }
>>   /**
>>

[dpdk-dev] [PATCH v3] lib/efd: fix to free tail queue entry after use

[Hari Kumar Vemula]

In rte_efd_create() allocated memory for tail queue entry but
not freed.
Added freeing the tail queue entry.

Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
Cc: stable@dpdk.org

Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
Acked-by: Reshma Pattan <reshma.pattan@intel.com>

---
v3: Replaced TAILQ_FOREACH_SAFE with TAILQ_FOREACH
v2: Updated commit message.
---
 lib/librte_efd/rte_efd.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c
index e6e5cfda2..8b8330e0b 100644
--- a/lib/librte_efd/rte_efd.c
+++ b/lib/librte_efd/rte_efd.c
@@ -740,17 +740,32 @@ void
 rte_efd_free(struct rte_efd_table *table)
 {
 	uint8_t socket_id;
+	struct rte_efd_list *efd_list;
+	struct rte_tailq_entry *te, *temp;
 
 	if (table == NULL)
 		return;
 
+	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
+
 	for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
 		rte_free(table->chunks[socket_id]);
+	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
 
+	TAILQ_FOREACH_SAFE(te, efd_list, next, temp) {
+		if (te->data == (void *) table) {
+			TAILQ_REMOVE(efd_list, te, next);
+			rte_free(te);
+			te = NULL;
+		}
+	}
+
+	rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
 	rte_ring_free(table->free_slots);
 	rte_free(table->offline_chunks);
 	rte_free(table->keys);
 	rte_free(table);
+
 }
 
 /**
-- 
2.17.2

Re: [dpdk-dev] [dpdk-stable] [PATCH v3] lib/efd: fix to free tail queue entry after use

[Thomas Monjalon]

Any review please?

11/01/2019 12:49, Hari Kumar Vemula:
> In rte_efd_create() allocated memory for tail queue entry but
> not freed.
> Added freeing the tail queue entry.
> 
> Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
> Acked-by: Reshma Pattan <reshma.pattan@intel.com>
> 
> ---
> v3: Replaced TAILQ_FOREACH_SAFE with TAILQ_FOREACH
> v2: Updated commit message.
> ---
>  lib/librte_efd/rte_efd.c | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
> 
> diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c
> index e6e5cfda2..8b8330e0b 100644
> --- a/lib/librte_efd/rte_efd.c
> +++ b/lib/librte_efd/rte_efd.c
> @@ -740,17 +740,32 @@ void
>  rte_efd_free(struct rte_efd_table *table)
>  {
>  	uint8_t socket_id;
> +	struct rte_efd_list *efd_list;
> +	struct rte_tailq_entry *te, *temp;
>  
>  	if (table == NULL)
>  		return;
>  
> +	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
> +
>  	for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
>  		rte_free(table->chunks[socket_id]);
> +	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
>  
> +	TAILQ_FOREACH_SAFE(te, efd_list, next, temp) {
> +		if (te->data == (void *) table) {
> +			TAILQ_REMOVE(efd_list, te, next);
> +			rte_free(te);
> +			te = NULL;
> +		}
> +	}
> +
> +	rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
>  	rte_ring_free(table->free_slots);
>  	rte_free(table->offline_chunks);
>  	rte_free(table->keys);
>  	rte_free(table);
> +
>  }
>  
>  /**
> 

Re: [dpdk-dev] [dpdk-stable] [PATCH v3] lib/efd: fix to free tail queue entry after use

[Honnappa Nagarahalli]

> 
> Any review please?
> 
> 11/01/2019 12:49, Hari Kumar Vemula:
> > In rte_efd_create() allocated memory for tail queue entry but not
> > freed.
> > Added freeing the tail queue entry.
> >
> > Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
> > Cc: stable@dpdk.org
> >
> > Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
> > Acked-by: Reshma Pattan <reshma.pattan@intel.com>
> >
> > ---
> > v3: Replaced TAILQ_FOREACH_SAFE with TAILQ_FOREACH
> > v2: Updated commit message.
> > ---
> >  lib/librte_efd/rte_efd.c | 15 +++++++++++++++
> >  1 file changed, 15 insertions(+)
> >
> > diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c index
> > e6e5cfda2..8b8330e0b 100644
> > --- a/lib/librte_efd/rte_efd.c
> > +++ b/lib/librte_efd/rte_efd.c
> > @@ -740,17 +740,32 @@ void
> >  rte_efd_free(struct rte_efd_table *table)  {
> >  	uint8_t socket_id;
> > +	struct rte_efd_list *efd_list;
> > +	struct rte_tailq_entry *te, *temp;
> >
> >  	if (table == NULL)
> >  		return;
> >
> > +	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
> > +
Minor comment. May be better to move this after the 'for' loop below.

> >  	for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
> >  		rte_free(table->chunks[socket_id]);
> > +	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
> >
> > +	TAILQ_FOREACH_SAFE(te, efd_list, next, temp) {
> > +		if (te->data == (void *) table) {
> > +			TAILQ_REMOVE(efd_list, te, next);
> > +			rte_free(te);
> > +			te = NULL;
> > +		}
> > +	}
> > +
> > +	rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
> >  	rte_ring_free(table->free_slots);
> >  	rte_free(table->offline_chunks);
> >  	rte_free(table->keys);
> >  	rte_free(table);
> > +
Minor comment, extra space
> >  }
> >
> >  /**
> >
Some minor comments. Looks good otherwise.

Reviewed-by: Honnappa Nagarahalli <Honnappa.nagarahalli@arm.com>
> 
> 
> 
> 

[dpdk-dev] [PATCH v4] lib/efd: fix to free tail queue entry after use

[Hari Kumar Vemula]

In rte_efd_create() allocated memory for tail queue entry but
not freed.
Added freeing the tail queue entry.

Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
Cc: stable@dpdk.org

Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
Acked-by: Reshma Pattan <reshma.pattan@intel.com>
Reviewed-by: Honnappa Nagarahalli <Honnappa.nagarahalli@arm.com>
---
v4: RTE_TAILQ_CAST moved after for loop
v3: Replaced TAILQ_FOREACH_SAFE with TAILQ_FOREACH
v2: Updated commit message.
---
 lib/librte_efd/rte_efd.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c
index e6e5cfda2..b19e707d8 100644
--- a/lib/librte_efd/rte_efd.c
+++ b/lib/librte_efd/rte_efd.c
@@ -740,6 +740,8 @@ void
 rte_efd_free(struct rte_efd_table *table)
 {
 	uint8_t socket_id;
+	struct rte_efd_list *efd_list;
+	struct rte_tailq_entry *te, *temp;
 
 	if (table == NULL)
 		return;
@@ -747,6 +749,18 @@ rte_efd_free(struct rte_efd_table *table)
 	for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
 		rte_free(table->chunks[socket_id]);
 
+	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
+	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
+
+	TAILQ_FOREACH_SAFE(te, efd_list, next, temp) {
+		if (te->data == (void *) table) {
+			TAILQ_REMOVE(efd_list, te, next);
+			rte_free(te);
+			te = NULL;
+		}
+	}
+
+	rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
 	rte_ring_free(table->free_slots);
 	rte_free(table->offline_chunks);
 	rte_free(table->keys);
-- 
2.17.2

Re: [dpdk-dev] [PATCH v4] lib/efd: fix to free tail queue entry after use

[De Lara Guarch, Pablo]

Hi,

> -----Original Message-----
> From: Vemula, Hari KumarX
> Sent: Thursday, January 17, 2019 1:37 PM
> To: dev@dpdk.org
> Cc: Marohn, Byron <byron.marohn@intel.com>; Pattan, Reshma
> <reshma.pattan@intel.com>; De Lara Guarch, Pablo
> <pablo.de.lara.guarch@intel.com>; Parthasarathy, JananeeX M
> <jananeex.m.parthasarathy@intel.com>; Vemula, Hari KumarX
> <hari.kumarx.vemula@intel.com>; stable@dpdk.org
> Subject: [PATCH v4] lib/efd: fix to free tail queue entry after use
> 
> In rte_efd_create() allocated memory for tail queue entry but not freed.
> Added freeing the tail queue entry.
> 
> Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
> Acked-by: Reshma Pattan <reshma.pattan@intel.com>
> Reviewed-by: Honnappa Nagarahalli <Honnappa.nagarahalli@arm.com>
> ---
> v4: RTE_TAILQ_CAST moved after for loop
> v3: Replaced TAILQ_FOREACH_SAFE with TAILQ_FOREACH
> v2: Updated commit message.
> ---
>  lib/librte_efd/rte_efd.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c index
> e6e5cfda2..b19e707d8 100644
> --- a/lib/librte_efd/rte_efd.c
> +++ b/lib/librte_efd/rte_efd.c
> @@ -740,6 +740,8 @@ void
>  rte_efd_free(struct rte_efd_table *table)  {
>  	uint8_t socket_id;
> +	struct rte_efd_list *efd_list;
> +	struct rte_tailq_entry *te, *temp;
> 
>  	if (table == NULL)
>  		return;
> @@ -747,6 +749,18 @@ rte_efd_free(struct rte_efd_table *table)
>  	for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
>  		rte_free(table->chunks[socket_id]);
> 
> +	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
> +	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
> +
> +	TAILQ_FOREACH_SAFE(te, efd_list, next, temp) {
> +		if (te->data == (void *) table) {
> +			TAILQ_REMOVE(efd_list, te, next);
> +			rte_free(te);
> +			te = NULL;

No need to set te = NULL, as it is a local variable.
Also, you can break here, as no duplicates are allowed.

Apart from this two changes:

Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

[dpdk-dev] [PATCH v5] lib/efd: fix to free tail queue entry after use

[Hari Kumar Vemula]

In rte_efd_create() allocated memory for tail queue entry but
not freed.
Added freeing the tail queue entry.

Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
Cc: stable@dpdk.org

Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
Reviewed-by: Honnappa Nagarahalli <Honnappa.nagarahalli@arm.com>
Acked-by: Reshma Pattan <reshma.pattan@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
v5: Removed NULL initialization
v4: RTE_TAILQ_CAST moved after for loop
v3: Replaced TAILQ_FOREACH_SAFE with TAILQ_FOREACH
v2: Updated commit message.
---
 lib/librte_efd/rte_efd.c | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/lib/librte_efd/rte_efd.c b/lib/librte_efd/rte_efd.c
index e6e5cfda2..1a97ece05 100644
--- a/lib/librte_efd/rte_efd.c
+++ b/lib/librte_efd/rte_efd.c
@@ -740,6 +740,8 @@ void
 rte_efd_free(struct rte_efd_table *table)
 {
 	uint8_t socket_id;
+	struct rte_efd_list *efd_list;
+	struct rte_tailq_entry *te, *temp;
 
 	if (table == NULL)
 		return;
@@ -747,6 +749,18 @@ rte_efd_free(struct rte_efd_table *table)
 	for (socket_id = 0; socket_id < RTE_MAX_NUMA_NODES; socket_id++)
 		rte_free(table->chunks[socket_id]);
 
+	efd_list = RTE_TAILQ_CAST(rte_efd_tailq.head, rte_efd_list);
+	rte_rwlock_write_lock(RTE_EAL_TAILQ_RWLOCK);
+
+	TAILQ_FOREACH_SAFE(te, efd_list, next, temp) {
+		if (te->data == (void *) table) {
+			TAILQ_REMOVE(efd_list, te, next);
+			rte_free(te);
+			break;
+		}
+	}
+
+	rte_rwlock_write_unlock(RTE_EAL_TAILQ_RWLOCK);
 	rte_ring_free(table->free_slots);
 	rte_free(table->offline_chunks);
 	rte_free(table->keys);
-- 
2.17.2

Re: [dpdk-dev] [PATCH v5] lib/efd: fix to free tail queue entry after use

[Thomas Monjalon]

18/01/2019 08:40, Hari Kumar Vemula:
> In rte_efd_create() allocated memory for tail queue entry but
> not freed.
> Added freeing the tail queue entry.
> 
> Fixes: 56b6ef874f80 ("efd: new Elastic Flow Distributor library")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Hari Kumar Vemula <hari.kumarx.vemula@intel.com>
> Reviewed-by: Honnappa Nagarahalli <Honnappa.nagarahalli@arm.com>
> Acked-by: Reshma Pattan <reshma.pattan@intel.com>
> Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
> ---
> v5: Removed NULL initialization
> v4: RTE_TAILQ_CAST moved after for loop
> v3: Replaced TAILQ_FOREACH_SAFE with TAILQ_FOREACH
> v2: Updated commit message.
> ---

Applied, thanks