From: Jiasheng Jiang Date: Fri, 30 Sep 2022 04:48:43 +0000 (+0800) Subject: net: prestera: acl: Add check for kmemdup X-Git-Tag: baikal/mips/sdk6.1~4743^2~1^2~8 X-Git-Url: https://git.baikalelectronics.ru/sdk/?a=commitdiff_plain;h=987037e8aa0b11ed1163a021ac375aa0af870e25;p=kernel.git net: prestera: acl: Add check for kmemdup As the kemdup could return NULL, it should be better to check the return value and return error if fails. Moreover, the return value of prestera_acl_ruleset_keymask_set() should be checked by cascade. Fixes: 1ae26699a614 ("net: prestera: flower template support") Signed-off-by: Jiasheng Jiang Reviewed-by: Taras Chornyi Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/marvell/prestera/prestera_acl.c b/drivers/net/ethernet/marvell/prestera/prestera_acl.c index 3d4b85f2d5414..f6b2933859d00 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_acl.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_acl.c @@ -178,10 +178,14 @@ err_rhashtable_init: return ERR_PTR(err); } -void prestera_acl_ruleset_keymask_set(struct prestera_acl_ruleset *ruleset, - void *keymask) +int prestera_acl_ruleset_keymask_set(struct prestera_acl_ruleset *ruleset, + void *keymask) { ruleset->keymask = kmemdup(keymask, ACL_KEYMASK_SIZE, GFP_KERNEL); + if (!ruleset->keymask) + return -ENOMEM; + + return 0; } int prestera_acl_ruleset_offload(struct prestera_acl_ruleset *ruleset) diff --git a/drivers/net/ethernet/marvell/prestera/prestera_acl.h b/drivers/net/ethernet/marvell/prestera/prestera_acl.h index 03fc5b9dc9258..131bfbc87cd75 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_acl.h +++ b/drivers/net/ethernet/marvell/prestera/prestera_acl.h @@ -185,8 +185,8 @@ struct prestera_acl_ruleset * prestera_acl_ruleset_lookup(struct prestera_acl *acl, struct prestera_flow_block *block, u32 chain_index); -void prestera_acl_ruleset_keymask_set(struct prestera_acl_ruleset *ruleset, - void *keymask); +int prestera_acl_ruleset_keymask_set(struct prestera_acl_ruleset *ruleset, + void *keymask); bool prestera_acl_ruleset_is_offload(struct prestera_acl_ruleset *ruleset); int prestera_acl_ruleset_offload(struct prestera_acl_ruleset *ruleset); void prestera_acl_ruleset_put(struct prestera_acl_ruleset *ruleset); diff --git a/drivers/net/ethernet/marvell/prestera/prestera_flower.c b/drivers/net/ethernet/marvell/prestera/prestera_flower.c index 19d3b55c578ee..cf551a8379aca 100644 --- a/drivers/net/ethernet/marvell/prestera/prestera_flower.c +++ b/drivers/net/ethernet/marvell/prestera/prestera_flower.c @@ -452,7 +452,9 @@ int prestera_flower_tmplt_create(struct prestera_flow_block *block, } /* preserve keymask/template to this ruleset */ - prestera_acl_ruleset_keymask_set(ruleset, rule.re_key.match.mask); + err = prestera_acl_ruleset_keymask_set(ruleset, rule.re_key.match.mask); + if (err) + goto err_ruleset_keymask_set; /* skip error, as it is not possible to reject template operation, * so, keep the reference to the ruleset for rules to be added @@ -468,6 +470,8 @@ int prestera_flower_tmplt_create(struct prestera_flow_block *block, list_add_rcu(&template->list, &block->template_list); return 0; +err_ruleset_keymask_set: + prestera_acl_ruleset_put(ruleset); err_ruleset_get: kfree(template); err_malloc: