On 07/08/2015 05:24 PM, Johannes Thumshirn wrote:
> Destroy st_index_idr on module exit, reclaiming the allocated memory.
>
> This was detected by the following semantic patch (written by Luis Rodriguez
> <mcg...@suse.com>)
> <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 <jthumsh...@suse.de>
> ---
> drivers/scsi/st.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/drivers/scsi/st.c b/drivers/scsi/st.c
> index 3f25b8f..79ac024 100644
> --- a/drivers/scsi/st.c
> +++ b/drivers/scsi/st.c
> @@ -4427,6 +4427,7 @@ static void __exit exit_st(void)
> unregister_chrdev_region(MKDEV(SCSI_TAPE_MAJOR, 0),
> ST_MAX_TAPE_ENTRIES);
> class_unregister(&st_sysfs_class);
> + idr_destroy(&st_index_idr);
> printk(KERN_INFO "st: Unloaded.\n");
> }
>
>
Reviewed-by: Hannes Reinecke <h...@suse.de>
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
h...@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton
HRB 21284 (AG Nürnberg)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
