From: Miaoqian Lin Date: Tue, 2 Sep 2025 04:09:49 +0000 (+0800) Subject: wifi: iwlwifi: Fix dentry reference leak in iwl_mld_add_link_debugfs X-Git-Tag: v6.18-rc1~132^2~207^2~1^2~15 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ff46e2e7034c78489fa7a6bc35f7c9dd8ab82905;p=thirdparty%2Fkernel%2Flinux.git wifi: iwlwifi: Fix dentry reference leak in iwl_mld_add_link_debugfs The debugfs_lookup() function increases the dentry reference count. Add missing dput() call to release the reference when the "iwlmld" directory already exists. Fixes: d1e879ec600f ("wifi: iwlwifi: add iwlmld sub-driver") Cc: stable@vger.kernel.org Signed-off-by: Miaoqian Lin Link: https://patch.msgid.link/20250902040955.2362472-1-linmq006@gmail.com Signed-off-by: Miri Korenblit --- diff --git a/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c b/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c index cc052b0aa53ff..372204bf84522 100644 --- a/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c +++ b/drivers/net/wireless/intel/iwlwifi/mld/debugfs.c @@ -1001,8 +1001,12 @@ void iwl_mld_add_link_debugfs(struct ieee80211_hw *hw, * If not, this is a per-link dir of a MLO vif, add in it the iwlmld * dir. */ - if (!mld_link_dir) + if (!mld_link_dir) { mld_link_dir = debugfs_create_dir("iwlmld", dir); + } else { + /* Release the reference from debugfs_lookup */ + dput(mld_link_dir); + } } static ssize_t _iwl_dbgfs_fixed_rate_write(struct iwl_mld *mld, char *buf,