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batman-adv: Initialize lockdep class keys for hashes

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Different hashes have the same class key because they get
initialised with the same one. For this reason lockdep can create
false warning when they are used recursively.

Re-initialise the key for each hash after the invocation to hash_new()
to avoid this problem.

Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Tested-by: Linus Lüssing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
This commit is contained in:
Antonio Quartulli 2012-11-10 11:00:32 +01:00
parent 8425ec6aea
commit dec05074b1
3 changed files with 22 additions and 0 deletions
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6
net/batman-adv/originator.c
View File

@ -29,6 +29,9 @@
#include "soft-interface.h"
#include "bridge_loop_avoidance.h"
/* hash class keys */
static struct lock_class_key batadv_orig_hash_lock_class_key;
static void batadv_purge_orig(struct work_struct *work);
static void batadv_start_purge_timer(struct batadv_priv *bat_priv)
@ -57,6 +60,9 @@ int batadv_originator_init(struct batadv_priv *bat_priv)
if (!bat_priv->orig_hash)
goto err;
batadv_hash_set_lock_class(bat_priv->orig_hash,
&batadv_orig_hash_lock_class_key);
batadv_start_purge_timer(bat_priv);
return 0;

10
net/batman-adv/translation-table.c
View File

@ -29,6 +29,10 @@
#include <linux/crc16.h>
/* hash class keys */
static struct lock_class_key batadv_tt_local_hash_lock_class_key;
static struct lock_class_key batadv_tt_global_hash_lock_class_key;
static void batadv_send_roam_adv(struct batadv_priv *bat_priv, uint8_t *client,
struct batadv_orig_node *orig_node);
static void batadv_tt_purge(struct work_struct *work);
@ -235,6 +239,9 @@ static int batadv_tt_local_init(struct batadv_priv *bat_priv)
if (!bat_priv->tt.local_hash)
return -ENOMEM;
batadv_hash_set_lock_class(bat_priv->tt.local_hash,
&batadv_tt_local_hash_lock_class_key);
return 0;
}
@ -694,6 +701,9 @@ static int batadv_tt_global_init(struct batadv_priv *bat_priv)
if (!bat_priv->tt.global_hash)
return -ENOMEM;
batadv_hash_set_lock_class(bat_priv->tt.global_hash,
&batadv_tt_global_hash_lock_class_key);
return 0;
}

6
net/batman-adv/vis.c
View File

@ -28,6 +28,9 @@
#define BATADV_MAX_VIS_PACKET_SIZE 1000
/* hash class keys */
static struct lock_class_key batadv_vis_hash_lock_class_key;
static void batadv_start_vis_timer(struct batadv_priv *bat_priv);
/* free the info */
@ -852,6 +855,9 @@ int batadv_vis_init(struct batadv_priv *bat_priv)
goto err;
}
batadv_hash_set_lock_class(bat_priv->vis.hash,
&batadv_vis_hash_lock_class_key);
bat_priv->vis.my_info = kmalloc(BATADV_MAX_VIS_PACKET_SIZE, GFP_ATOMIC);
if (!bat_priv->vis.my_info)
goto err;