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authorJohannes Berg <johannes.berg@intel.com>2018-05-29 12:04:51 +0200
committerJohannes Berg <johannes@sipsolutions.net>2018-06-15 13:02:02 +0200
commit3f61b7a30a6a8fd917d7570cb00a26a054d84ab4 (patch)
treef6977da2207b9a00d14dcdc69815e1035508f446 /drivers/net
parent3c12d0486856b9eb89c2a9ac336713cba90813e3 (diff)
downloadlinux-3f61b7a30a6a8fd917d7570cb00a26a054d84ab4.tar.bz2
mac80211_hwsim: fix module init error paths
We didn't free the workqueue on any errors, nor did we correctly check for rhashtable allocation errors, nor did we free the hashtable on error. Reported-by: Colin King <colin.king@canonical.com> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Diffstat (limited to 'drivers/net')
-rw-r--r--drivers/net/wireless/mac80211_hwsim.c11
1 files changed, 9 insertions, 2 deletions
diff --git a/drivers/net/wireless/mac80211_hwsim.c b/drivers/net/wireless/mac80211_hwsim.c
index 9825bfd42abc..18e819d964f1 100644
--- a/drivers/net/wireless/mac80211_hwsim.c
+++ b/drivers/net/wireless/mac80211_hwsim.c
@@ -3572,11 +3572,14 @@ static int __init init_mac80211_hwsim(void)
hwsim_wq = alloc_workqueue("hwsim_wq", 0, 0);
if (!hwsim_wq)
return -ENOMEM;
- rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
+
+ err = rhashtable_init(&hwsim_radios_rht, &hwsim_rht_params);
+ if (err)
+ goto out_free_wq;
err = register_pernet_device(&hwsim_net_ops);
if (err)
- return err;
+ goto out_free_rht;
err = platform_driver_register(&mac80211_hwsim_driver);
if (err)
@@ -3701,6 +3704,10 @@ out_unregister_driver:
platform_driver_unregister(&mac80211_hwsim_driver);
out_unregister_pernet:
unregister_pernet_device(&hwsim_net_ops);
+out_free_rht:
+ rhashtable_destroy(&hwsim_radios_rht);
+out_free_wq:
+ destroy_workqueue(hwsim_wq);
return err;
}
module_init(init_mac80211_hwsim);