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From: "Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
To: Jeff Johnson <jjohnson@kernel.org>,
	 Loic Poulain <loic.poulain@linaro.org>,
	 Brian Norris <briannorris@chromium.org>,
	 Francesco Dolcini <francesco@dolcini.it>,
	 Tony Nguyen <anthony.l.nguyen@intel.com>,
	 Przemek Kitszel <przemyslaw.kitszel@intel.com>,
	 Andrew Lunn <andrew+netdev@lunn.ch>,
	 "David S. Miller" <davem@davemloft.net>,
	Eric Dumazet <edumazet@google.com>,
	 Jakub Kicinski <kuba@kernel.org>,
	Paolo Abeni <pabeni@redhat.com>,
	 Saeed Mahameed <saeedm@nvidia.com>,
	Leon Romanovsky <leon@kernel.org>,
	 Tariq Toukan <tariqt@nvidia.com>
Cc: ath10k@lists.infradead.org, linux-kernel@vger.kernel.org,
	ath11k@lists.infradead.org, ath12k@lists.infradead.org,
	wcn36xx@lists.infradead.org, linux-wireless@vger.kernel.org,
	intel-wired-lan@lists.osuosl.org, netdev@vger.kernel.org,
	linux-rdma@vger.kernel.org,
	"Thomas Weißschuh" <thomas.weissschuh@linutronix.de>
Subject: [PATCH net-next 3/7] wifi: ath12k: Don't use %pK through printk
Date: Mon, 14 Apr 2025 10:26:04 +0200	[thread overview]
Message-ID: <20250414-restricted-pointers-net-v1-3-12af0ce46cdd@linutronix.de> (raw)
In-Reply-To: <20250414-restricted-pointers-net-v1-0-12af0ce46cdd@linutronix.de>

In the past %pK was preferable to %p as it would not leak raw pointer
values into the kernel log.
Since commit ad67b74d2469 ("printk: hash addresses printed with %p")
the regular %p has been improved to avoid this issue.
Furthermore, restricted pointers ("%pK") were never meant to be used
through printk(). They can still unintentionally leak raw pointers or
acquire sleeping looks in atomic contexts.

Switch to the regular pointer formatting which is safer and
easier to reason about.
There are still a few users of %pK left, but these use it through seq_file,
for which its usage is safe.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
---
 drivers/net/wireless/ath/ath12k/testmode.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/ath/ath12k/testmode.c b/drivers/net/wireless/ath/ath12k/testmode.c
index 18d56a976dc74c4f6eab87e358c14d4faea648e2..fb6af7ccf71f44ae4bd01cde53fba3527eed0d2d 100644
--- a/drivers/net/wireless/ath/ath12k/testmode.c
+++ b/drivers/net/wireless/ath/ath12k/testmode.c
@@ -97,7 +97,7 @@ void ath12k_tm_process_event(struct ath12k_base *ab, u32 cmd_id,
 	u8 const *buf_pos;
 
 	ath12k_dbg(ab, ATH12K_DBG_TESTMODE,
-		   "testmode event wmi cmd_id %d ftm event msg %pK datalen %d\n",
+		   "testmode event wmi cmd_id %d ftm event msg %p datalen %d\n",
 		   cmd_id, ftm_msg, length);
 	ath12k_dbg_dump(ab, ATH12K_DBG_TESTMODE, NULL, "", ftm_msg, length);
 	pdev_id = DP_HW2SW_MACID(le32_to_cpu(ftm_msg->seg_hdr.pdev_id));
@@ -227,7 +227,7 @@ static int ath12k_tm_cmd_process_ftm(struct ath12k *ar, struct nlattr *tb[])
 	buf_len = nla_len(tb[ATH_TM_ATTR_DATA]);
 	cmd_id = WMI_PDEV_UTF_CMDID;
 	ath12k_dbg(ar->ab, ATH12K_DBG_TESTMODE,
-		   "testmode cmd wmi cmd_id %d buf %pK buf_len %d\n",
+		   "testmode cmd wmi cmd_id %d buf %p buf_len %d\n",
 		   cmd_id, buf, buf_len);
 	ath12k_dbg_dump(ar->ab, ATH12K_DBG_TESTMODE, NULL, "", buf, buf_len);
 	bufpos = buf;

-- 
2.49.0



  parent reply	other threads:[~2025-04-14  8:26 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-04-14  8:26 [PATCH net-next 0/7] net: Don't use %pK through printk Thomas Weißschuh
2025-04-14  8:26 ` [PATCH net-next 1/7] wifi: ath10k: " Thomas Weißschuh
2025-04-14 16:16   ` [Intel-wired-lan] " Loktionov, Aleksandr
2025-04-14  8:26 ` [PATCH net-next 2/7] wifi: ath11k: " Thomas Weißschuh
2025-04-14 16:17   ` [Intel-wired-lan] " Loktionov, Aleksandr
2025-04-14  8:26 ` Thomas Weißschuh [this message]
2025-04-14 16:16   ` [Intel-wired-lan] [PATCH net-next 3/7] wifi: ath12k: " Loktionov, Aleksandr
2025-04-14  8:26 ` [PATCH net-next 4/7] wifi: wcn36xx: " Thomas Weißschuh
2025-04-14 19:04   ` Loic Poulain
2025-04-14  8:26 ` [PATCH net-next 5/7] wifi: mwifiex: " Thomas Weißschuh
2025-04-14 16:15   ` [Intel-wired-lan] " Loktionov, Aleksandr
2025-04-14  8:26 ` [PATCH net-next 6/7] ice: Don't use %pK through printk or tracepoints Thomas Weißschuh
2025-04-14  9:59   ` Przemek Kitszel
2025-04-14 16:18   ` [Intel-wired-lan] " Loktionov, Aleksandr
2025-04-14  8:26 ` [PATCH net-next 7/7] net/mlx5: Don't use %pK through tracepoints Thomas Weißschuh
2025-04-14 10:49   ` Tariq Toukan
2025-04-14 16:17   ` [Intel-wired-lan] " Loktionov, Aleksandr
2025-04-14 15:02 ` [PATCH net-next 0/7] net: Don't use %pK through printk Jeff Johnson
2025-04-15  6:42   ` Thomas Weißschuh
2025-04-14 16:17 ` [Intel-wired-lan] " Loktionov, Aleksandr
2025-04-14 18:44 ` Brian Norris
2025-04-15  6:59   ` Thomas Weißschuh

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