2015-07-08 15:20:06

by Johannes Thumshirn

Subject: [PATCH] lpfc: Destroy lpfc_hba_index IDR on module exit

Destroy lpfc_hba_index IDR on module exit, reclaiming the allocated memory.

This was detected by the following semantic patch (written by Luis Rodriguez
<[email protected]>)
<SmPL>
@ defines_module_init @
declarer name module_init, module_exit;
declarer name DEFINE_IDR;
identifier init;
@@

module_init(init);

@ defines_module_exit @
identifier exit;
@@

module_exit(exit);

@ declares_idr depends on defines_module_init && defines_module_exit @
identifier idr;
@@

DEFINE_IDR(idr);

@ on_exit_calls_destroy depends on declares_idr && defines_module_exit @
identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
...
idr_destroy(&idr);
...
}

@ missing_module_idr_destroy depends on declares_idr && defines_module_exit && !on_exit_calls_destroy @
identifier declares_idr.idr, defines_module_exit.exit;
@@

exit(void)
{
...
+idr_destroy(&idr);
}
</SmPL>

Signed-off-by: Johannes Thumshirn <[email protected]>
---
drivers/scsi/lpfc/lpfc_init.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
index f962118..4bedb06 100644
--- a/drivers/scsi/lpfc/lpfc_init.c
+++ b/drivers/scsi/lpfc/lpfc_init.c
@@ -11477,6 +11477,7 @@ lpfc_exit(void)
free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
}
kfree(lpfc_used_cpu);
+ idr_destroy(&lpfc_hba_index);
}

module_init(lpfc_init);
--
2.4.3

2015-07-10 06:39:21

by Hannes Reinecke

Subject: Re: [PATCH] lpfc: Destroy lpfc_hba_index IDR on module exit

On 07/08/2015 05:19 PM, Johannes Thumshirn wrote:
> Destroy lpfc_hba_index IDR on module exit, reclaiming the allocated memory.
>
> This was detected by the following semantic patch (written by Luis Rodriguez
> <[email protected]>)
> <SmPL>
> @ defines_module_init @
> declarer name module_init, module_exit;
> declarer name DEFINE_IDR;
> identifier init;
> @@
>
> module_init(init);
>
> @ defines_module_exit @
> identifier exit;
> @@
>
> module_exit(exit);
>
> @ declares_idr depends on defines_module_init && defines_module_exit @
> identifier idr;
> @@
>
> DEFINE_IDR(idr);
>
> @ on_exit_calls_destroy depends on declares_idr && defines_module_exit @
> identifier declares_idr.idr, defines_module_exit.exit;
> @@
>
> exit(void)
> {
> ...
> idr_destroy(&idr);
> ...
> }
>
> @ missing_module_idr_destroy depends on declares_idr && defines_module_exit && !on_exit_calls_destroy @
> identifier declares_idr.idr, defines_module_exit.exit;
> @@
>
> exit(void)
> {
> ...
> +idr_destroy(&idr);
> }
> </SmPL>
>
> Signed-off-by: Johannes Thumshirn <[email protected]>
> ---
> drivers/scsi/lpfc/lpfc_init.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
> index f962118..4bedb06 100644
> --- a/drivers/scsi/lpfc/lpfc_init.c
> +++ b/drivers/scsi/lpfc/lpfc_init.c
> @@ -11477,6 +11477,7 @@ lpfc_exit(void)
> free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
> }
> kfree(lpfc_used_cpu);
> + idr_destroy(&lpfc_hba_index);
> }
>
> module_init(lpfc_init);
>
Reviewed-by: Hannes Reinecke <[email protected]>

Cheers,

Hannes
--
Dr. Hannes Reinecke zSeries & Storage
[email protected] +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 N?rnberg
GF: F. Imend?rffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG N?rnberg)

2015-07-10 12:34:04

by James Smart

Subject: Re: [PATCH] lpfc: Destroy lpfc_hba_index IDR on module exit

Reviewed-By: James Smart <[email protected]>

-- james s


On 7/8/2015 11:19 AM, Johannes Thumshirn wrote:
> Destroy lpfc_hba_index IDR on module exit, reclaiming the allocated memory.
>
> This was detected by the following semantic patch (written by Luis Rodriguez
> <[email protected]>)
> <SmPL>
> @ defines_module_init @
> declarer name module_init, module_exit;
> declarer name DEFINE_IDR;
> identifier init;
> @@
>
> module_init(init);
>
> @ defines_module_exit @
> identifier exit;
> @@
>
> module_exit(exit);
>
> @ declares_idr depends on defines_module_init && defines_module_exit @
> identifier idr;
> @@
>
> DEFINE_IDR(idr);
>
> @ on_exit_calls_destroy depends on declares_idr && defines_module_exit @
> identifier declares_idr.idr, defines_module_exit.exit;
> @@
>
> exit(void)
> {
> ...
> idr_destroy(&idr);
> ...
> }
>
> @ missing_module_idr_destroy depends on declares_idr && defines_module_exit && !on_exit_calls_destroy @
> identifier declares_idr.idr, defines_module_exit.exit;
> @@
>
> exit(void)
> {
> ...
> +idr_destroy(&idr);
> }
> </SmPL>
>
> Signed-off-by: Johannes Thumshirn <[email protected]>
> ---
> drivers/scsi/lpfc/lpfc_init.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/scsi/lpfc/lpfc_init.c b/drivers/scsi/lpfc/lpfc_init.c
> index f962118..4bedb06 100644
> --- a/drivers/scsi/lpfc/lpfc_init.c
> +++ b/drivers/scsi/lpfc/lpfc_init.c
> @@ -11477,6 +11477,7 @@ lpfc_exit(void)
> free_pages((unsigned long)_dump_buf_dif, _dump_buf_dif_order);
> }
> kfree(lpfc_used_cpu);
> + idr_destroy(&lpfc_hba_index);
> }
>
> module_init(lpfc_init);