From: Miri Korenblit <miriam.rachel.korenblit@intel.com>
To: johannes@sipsolutions.net
Cc: linux-wireless@vger.kernel.org,
Johannes Berg <johannes.berg@intel.com>,
stable@vger.kernel.org
Subject: [PATCH 11/17] wifi: iwlwifi: mvm: handle debugfs names more carefully
Date: Wed, 20 Mar 2024 23:26:32 +0200 [thread overview]
Message-ID: <20240320232419.4dc1eb3dd015.I32f308b0356ef5bcf8d188dd98ce9b210e3ab9fd@changeid> (raw)
In-Reply-To: <20240320212638.1446082-1-miriam.rachel.korenblit@intel.com>
From: Johannes Berg <johannes.berg@intel.com>
With debugfs=off, we can get here with the dbgfs_dir being
an ERR_PTR(). Instead of checking for all this, which is
often flagged as a mistake, simply handle the names here
more carefully by printing them, then we don't need extra
checks.
Also, while checking, I noticed theoretically 'buf' is too
small, so fix that size as well.
Cc: stable@vger.kernel.org
Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218422
Fixes: c36235acb34f ("wifi: iwlwifi: mvm: rework debugfs handling")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
---
drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
index 5485e8bf613e..af56a55063a7 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/debugfs-vif.c
@@ -806,7 +806,9 @@ void iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct dentry *dbgfs_dir = vif->debugfs_dir;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
- char buf[100];
+ char buf[3 * 3 + 11 + (NL80211_WIPHY_NAME_MAXLEN + 1) +
+ (7 + IFNAMSIZ + 1) + 6 + 1];
+ char name[7 + IFNAMSIZ + 1];
/* this will happen in monitor mode */
if (!dbgfs_dir)
@@ -819,10 +821,11 @@ void iwl_mvm_vif_dbgfs_add_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
* find
* netdev:wlan0 -> ../../../ieee80211/phy0/netdev:wlan0/iwlmvm/
*/
- snprintf(buf, 100, "../../../%pd3/iwlmvm", dbgfs_dir);
+ snprintf(name, sizeof(name), "%pd", dbgfs_dir);
+ snprintf(buf, sizeof(buf), "../../../%pd3/iwlmvm", dbgfs_dir);
- mvmvif->dbgfs_slink = debugfs_create_symlink(dbgfs_dir->d_name.name,
- mvm->debugfs_dir, buf);
+ mvmvif->dbgfs_slink =
+ debugfs_create_symlink(name, mvm->debugfs_dir, buf);
}
void iwl_mvm_vif_dbgfs_rm_link(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
--
2.34.1
next prev parent reply other threads:[~2024-03-20 21:27 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-20 21:26 [PATCH 00/17] wifi: iwlwifi: updates - 2024-03-20 Miri Korenblit
2024-03-20 21:26 ` [PATCH 01/17] wifi: iwlwifi: mvm: include link ID when releasing frames Miri Korenblit
2024-03-20 21:26 ` [PATCH 02/17] wifi: iwlwifi: mvm: guard against invalid STA ID on removal Miri Korenblit
2024-03-20 21:26 ` [PATCH 03/17] wifi: iwlwifi: mvm: assign link STA ID lookups during restart Miri Korenblit
2024-03-20 21:26 ` [PATCH 04/17] wifi: iwlwifi: mvm: fix active link counting during recovery Miri Korenblit
2024-03-20 21:26 ` [PATCH 05/17] wifi: iwlwifi: mvm: mark EMLSR disabled in cleanup iterator Miri Korenblit
2024-03-20 21:26 ` [PATCH 06/17] wifi: iwlwifi: remove devices that never came out Miri Korenblit
2024-03-20 21:26 ` [PATCH 07/17] wifi: iwlwifi: remove wrong CRF_IDs Miri Korenblit
2024-03-20 21:26 ` [PATCH 08/17] wifi: iwlwifi: Print a specific device name Miri Korenblit
2024-03-20 21:26 ` [PATCH 09/17] wifi: iwlwifi: add support for BZ_W Miri Korenblit
2024-03-20 21:26 ` [PATCH 10/17] wifi: iwlwifi: mvm: Remove outdated comment Miri Korenblit
2024-03-20 21:26 ` Miri Korenblit [this message]
2024-03-20 21:26 ` [PATCH 12/17] wifi: iwlwifi: mvm: Declare HE/EHT capabilities support for P2P interfaces Miri Korenblit
2024-03-20 21:26 ` [PATCH 13/17] wifi: iwlwifi: Add support for LARI_CONFIG_CHANGE_CMD cmd v9 Miri Korenblit
2024-03-20 21:26 ` [PATCH 14/17] wifi: iwlwifi: mvm: set wider BW OFDMA ignore correctly Miri Korenblit
2024-03-20 21:26 ` [PATCH 15/17] wifi: iwlwifi: mvm: select STA mask only for active links Miri Korenblit
2024-03-25 14:27 ` Johannes Berg
2024-03-20 21:26 ` [PATCH 16/17] wifi: iwlwifi: mvm: don't change BA sessions during restart Miri Korenblit
2024-03-20 21:26 ` [PATCH 17/17] wifi: iwlwifi: reconfigure TLC during HW restart Miri Korenblit
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