[PATCH AUTOSEL 6.8 01/68] wifi: ath9k: fix LNA selection in ath_ant_try_scan()

[PATCH AUTOSEL 6.8 01/68] wifi: ath9k: fix LNA selection in ath_ant_try_scan()

[Sasha Levin]

From: Dmitry Antipov <dmantipov@yandex.ru>

[ Upstream commit d6b27eb997ef9a2aa51633b3111bc4a04748e6d3 ]

In 'ath_ant_try_scan()', (most likely) the 2nd LNA's signal
strength should be used in comparison against RSSI when
selecting first LNA as the main one. Compile tested only.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20231211172502.25202-1-dmantipov@yandex.ru
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/ath9k/antenna.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath9k/antenna.c b/drivers/net/wireless/ath/ath9k/antenna.c
index 988222cea9dfe..acc84e6711b0e 100644
--- a/drivers/net/wireless/ath/ath9k/antenna.c
+++ b/drivers/net/wireless/ath/ath9k/antenna.c
@@ -643,7 +643,7 @@ static void ath_ant_try_scan(struct ath_ant_comb *antcomb,
 				conf->main_lna_conf = ATH_ANT_DIV_COMB_LNA1;
 				conf->alt_lna_conf = ATH_ANT_DIV_COMB_LNA1_PLUS_LNA2;
 			} else if (antcomb->rssi_sub >
-				   antcomb->rssi_lna1) {
+				   antcomb->rssi_lna2) {
 				/* set to A-B */
 				conf->main_lna_conf = ATH_ANT_DIV_COMB_LNA1;
 				conf->alt_lna_conf = ATH_ANT_DIV_COMB_LNA1_MINUS_LNA2;
-- 
2.43.0

[PATCH AUTOSEL 6.8 02/68] wifi: rtw89: fix null pointer access when abort scan

[Sasha Levin]

From: Po-Hao Huang <phhuang@realtek.com>

[ Upstream commit 7e11a2966f51695c0af0b1f976a32d64dee243b2 ]

During cancel scan we might use vif that weren't scanning.
Fix this by using the actual scanning vif.

Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240119081501.25223-6-pkshih@realtek.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/realtek/rtw89/mac80211.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw89/mac80211.c b/drivers/net/wireless/realtek/rtw89/mac80211.c
index 93889d2fface1..956a06c8cdaab 100644
--- a/drivers/net/wireless/realtek/rtw89/mac80211.c
+++ b/drivers/net/wireless/realtek/rtw89/mac80211.c
@@ -441,7 +441,7 @@ static void rtw89_ops_bss_info_changed(struct ieee80211_hw *hw,
 			 * when disconnected by peer
 			 */
 			if (rtwdev->scanning)
-				rtw89_hw_scan_abort(rtwdev, vif);
+				rtw89_hw_scan_abort(rtwdev, rtwdev->scan_info.scanning_vif);
 		}
 	}
 
@@ -990,7 +990,7 @@ static int rtw89_ops_remain_on_channel(struct ieee80211_hw *hw,
 	}
 
 	if (rtwdev->scanning)
-		rtw89_hw_scan_abort(rtwdev, vif);
+		rtw89_hw_scan_abort(rtwdev, rtwdev->scan_info.scanning_vif);
 
 	if (type == IEEE80211_ROC_TYPE_MGMT_TX)
 		roc->state = RTW89_ROC_MGMT;
-- 
2.43.0

[PATCH AUTOSEL 6.8 03/68] bnx2x: Fix firmware version string character counts

[Sasha Levin]

From: Kees Cook <keescook@chromium.org>

[ Upstream commit 5642c82b9463c3263c086efb002516244bd4c668 ]

A potential string truncation was reported in bnx2x_fill_fw_str(),
when a long bp->fw_ver and a long phy_fw_ver might coexist, but seems
unlikely with real-world hardware.

Use scnprintf() to indicate the intent that truncations are tolerated.

While reading this code, I found a collection of various buffer size
counting issues. None looked like they might lead to a buffer overflow
with current code (the small buffers are 20 bytes and might only ever
consume 10 bytes twice with a trailing %NUL). However, early truncation
(due to a %NUL in the middle of the string) might be happening under
likely rare conditions. Regardless fix the formatters and related
functions:

- Switch from a separate strscpy() to just adding an additional "%s" to
  the format string that immediately follows it in bnx2x_fill_fw_str().
- Use sizeof() universally instead of using unbound defines.
- Fix bnx2x_7101_format_ver() and bnx2x_null_format_ver() to report the
  number of characters written, not including the trailing %NUL (as
  already done with the other firmware formatting functions).
- Require space for at least 1 byte in bnx2x_get_ext_phy_fw_version()
  for the trailing %NUL.
- Correct the needed buffer size in bnx2x_3_seq_format_ver().

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401260858.jZN6vD1k-lkp@intel.com/
Cc: Ariel Elior <aelior@marvell.com>
Cc: Sudarsana Kalluru <skalluru@marvell.com>
Cc: Manish Chopra <manishc@marvell.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20240126041044.work.220-kees@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c    |  9 +++++----
 .../net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c    |  2 +-
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c   | 14 +++++++-------
 3 files changed, 13 insertions(+), 12 deletions(-)

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index e9c1e1bb55806..528441b28c4ef 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -147,10 +147,11 @@ void bnx2x_fill_fw_str(struct bnx2x *bp, char *buf, size_t buf_len)
 
 		phy_fw_ver[0] = '\0';
 		bnx2x_get_ext_phy_fw_version(&bp->link_params,
-					     phy_fw_ver, PHY_FW_VER_LEN);
-		strscpy(buf, bp->fw_ver, buf_len);
-		snprintf(buf + strlen(bp->fw_ver), 32 - strlen(bp->fw_ver),
-			 "bc %d.%d.%d%s%s",
+					     phy_fw_ver, sizeof(phy_fw_ver));
+		/* This may become truncated. */
+		scnprintf(buf, buf_len,
+			 "%sbc %d.%d.%d%s%s",
+			 bp->fw_ver,
 			 (bp->common.bc_ver & 0xff0000) >> 16,
 			 (bp->common.bc_ver & 0xff00) >> 8,
 			 (bp->common.bc_ver & 0xff),
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
index 81d232e6d05fe..0bc7690cdee16 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_ethtool.c
@@ -1132,7 +1132,7 @@ static void bnx2x_get_drvinfo(struct net_device *dev,
 	}
 
 	memset(version, 0, sizeof(version));
-	bnx2x_fill_fw_str(bp, version, ETHTOOL_FWVERS_LEN);
+	bnx2x_fill_fw_str(bp, version, sizeof(version));
 	strlcat(info->fw_version, version, sizeof(info->fw_version));
 
 	strscpy(info->bus_info, pci_name(bp->pdev), sizeof(info->bus_info));
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
index 02808513ffe45..ea310057fe3af 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
@@ -6163,8 +6163,8 @@ static void bnx2x_link_int_ack(struct link_params *params,
 
 static int bnx2x_null_format_ver(u32 spirom_ver, u8 *str, u16 *len)
 {
-	str[0] = '\0';
-	(*len)--;
+	if (*len)
+		str[0] = '\0';
 	return 0;
 }
 
@@ -6173,7 +6173,7 @@ static int bnx2x_format_ver(u32 num, u8 *str, u16 *len)
 	u16 ret;
 
 	if (*len < 10) {
-		/* Need more than 10chars for this format */
+		/* Need more than 10 chars for this format */
 		bnx2x_null_format_ver(num, str, len);
 		return -EINVAL;
 	}
@@ -6188,8 +6188,8 @@ static int bnx2x_3_seq_format_ver(u32 num, u8 *str, u16 *len)
 {
 	u16 ret;
 
-	if (*len < 10) {
-		/* Need more than 10chars for this format */
+	if (*len < 9) {
+		/* Need more than 9 chars for this format */
 		bnx2x_null_format_ver(num, str, len);
 		return -EINVAL;
 	}
@@ -6208,7 +6208,7 @@ int bnx2x_get_ext_phy_fw_version(struct link_params *params, u8 *version,
 	int status = 0;
 	u8 *ver_p = version;
 	u16 remain_len = len;
-	if (version == NULL || params == NULL)
+	if (version == NULL || params == NULL || len == 0)
 		return -EINVAL;
 	bp = params->bp;
 
@@ -11546,7 +11546,7 @@ static int bnx2x_7101_format_ver(u32 spirom_ver, u8 *str, u16 *len)
 	str[2] = (spirom_ver & 0xFF0000) >> 16;
 	str[3] = (spirom_ver & 0xFF000000) >> 24;
 	str[4] = '\0';
-	*len -= 5;
+	*len -= 4;
 	return 0;
 }
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 04/68] batman-adv: Return directly after a failed batadv_dat_select_candidates() in batadv_dat_forward_data()

[Sasha Levin]

From: Markus Elfring <elfring@users.sourceforge.net>

[ Upstream commit ffc15626c861f811f9778914be004fcf43810a91 ]

The kfree() function was called in one case by
the batadv_dat_forward_data() function during error handling
even if the passed variable contained a null pointer.
This issue was detected by using the Coccinelle software.

* Thus return directly after a batadv_dat_select_candidates() call failed
  at the beginning.

* Delete the label “out” which became unnecessary with this refactoring.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/batman-adv/distributed-arp-table.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/batman-adv/distributed-arp-table.c b/net/batman-adv/distributed-arp-table.c
index 28a939d560906..4c7e855343245 100644
--- a/net/batman-adv/distributed-arp-table.c
+++ b/net/batman-adv/distributed-arp-table.c
@@ -684,7 +684,7 @@ static bool batadv_dat_forward_data(struct batadv_priv *bat_priv,
 
 	cand = batadv_dat_select_candidates(bat_priv, ip, vid);
 	if (!cand)
-		goto out;
+		return ret;
 
 	batadv_dbg(BATADV_DBG_DAT, bat_priv, "DHT_SEND for %pI4\n", &ip);
 
@@ -728,7 +728,6 @@ static bool batadv_dat_forward_data(struct batadv_priv *bat_priv,
 		batadv_orig_node_put(cand[i].orig_node);
 	}
 
-out:
 	kfree(cand);
 	return ret;
 }
-- 
2.43.0

[PATCH AUTOSEL 6.8 05/68] batman-adv: Improve exception handling in batadv_throw_uevent()

[Sasha Levin]

From: Markus Elfring <elfring@users.sourceforge.net>

[ Upstream commit 5593e9abf1cf2bf096366d8c7fd933bc69d561ce ]

The kfree() function was called in up to three cases by
the batadv_throw_uevent() function during error handling
even if the passed variable contained a null pointer.
This issue was detected by using the Coccinelle software.

* Thus adjust jump targets.

* Reorder kfree() calls at the end.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/batman-adv/main.c | 14 ++++++++------
 1 file changed, 8 insertions(+), 6 deletions(-)

diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 5fc754b0b3f7f..75119f1ffcccf 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -691,29 +691,31 @@ int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type,
 				  "%s%s", BATADV_UEV_TYPE_VAR,
 				  batadv_uev_type_str[type]);
 	if (!uevent_env[0])
-		goto out;
+		goto report_error;
 
 	uevent_env[1] = kasprintf(GFP_ATOMIC,
 				  "%s%s", BATADV_UEV_ACTION_VAR,
 				  batadv_uev_action_str[action]);
 	if (!uevent_env[1])
-		goto out;
+		goto free_first_env;
 
 	/* If the event is DEL, ignore the data field */
 	if (action != BATADV_UEV_DEL) {
 		uevent_env[2] = kasprintf(GFP_ATOMIC,
 					  "%s%s", BATADV_UEV_DATA_VAR, data);
 		if (!uevent_env[2])
-			goto out;
+			goto free_second_env;
 	}
 
 	ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env);
-out:
-	kfree(uevent_env[0]);
-	kfree(uevent_env[1]);
 	kfree(uevent_env[2]);
+free_second_env:
+	kfree(uevent_env[1]);
+free_first_env:
+	kfree(uevent_env[0]);
 
 	if (ret)
+report_error:
 		batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
 			   "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n",
 			   batadv_uev_type_str[type],
-- 
2.43.0

[PATCH AUTOSEL 6.8 06/68] arm64: dts: qcom: Add support for Xiaomi Redmi Note 9S

[Sasha Levin]

From: Joe Mason <buddyjojo06@outlook.com>

[ Upstream commit 6016fb7c91f72f4afbb4017e13cd91954d0f1a9b ]

Add a device tree for the Xiaomi Redmi Note 9S (curtana) phone, based on
sm7125-xiaomi-common.dtsi.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Joe Mason <buddyjojo06@outlook.com>
Signed-off-by: David Wronek <davidwronek@gmail.com>
Link: https://lore.kernel.org/r/20240121-sm7125-upstream-v4-8-f7d1212c8ebb@gmail.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/qcom/Makefile                |  1 +
 .../boot/dts/qcom/sm7125-xiaomi-curtana.dts      | 16 ++++++++++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 arch/arm64/boot/dts/qcom/sm7125-xiaomi-curtana.dts

diff --git a/arch/arm64/boot/dts/qcom/Makefile b/arch/arm64/boot/dts/qcom/Makefile
index 39889d5f8e123..2e6984bbbb836 100644
--- a/arch/arm64/boot/dts/qcom/Makefile
+++ b/arch/arm64/boot/dts/qcom/Makefile
@@ -210,6 +210,7 @@ dtb-$(CONFIG_ARCH_QCOM)	+= sm6125-sony-xperia-seine-pdx201.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6125-xiaomi-laurel-sprout.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6350-sony-xperia-lena-pdx213.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm6375-sony-xperia-murray-pdx225.dtb
+dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-xiaomi-curtana.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm7125-xiaomi-joyeuse.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm7225-fairphone-fp4.dtb
 dtb-$(CONFIG_ARCH_QCOM)	+= sm8150-hdk.dtb
diff --git a/arch/arm64/boot/dts/qcom/sm7125-xiaomi-curtana.dts b/arch/arm64/boot/dts/qcom/sm7125-xiaomi-curtana.dts
new file mode 100644
index 0000000000000..12f517a8492c3
--- /dev/null
+++ b/arch/arm64/boot/dts/qcom/sm7125-xiaomi-curtana.dts
@@ -0,0 +1,16 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2023, Joe Mason <buddyjojo06@outlook.com>
+ */
+
+/dts-v1/;
+
+#include "sm7125-xiaomi-common.dtsi"
+
+/ {
+	model = "Xiaomi Redmi Note 9S";
+	compatible = "xiaomi,curtana", "qcom,sm7125";
+
+	/* required for bootloader to select correct board */
+	qcom,board-id = <0x20022 1>;
+};
-- 
2.43.0

[PATCH AUTOSEL 6.8 07/68] net: stmmac: dwmac-starfive: Add support for JH7100 SoC

[Sasha Levin]

From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>

[ Upstream commit 8d4597b871210429bda0f5c3a8816b7d9b6daf7e ]

Add a missing quirk to enable support for the StarFive JH7100 SoC.

Additionally, for greater flexibility in operation, allow using the
rgmii-rxid and rgmii-txid phy modes.

Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/Kconfig   |  6 ++--
 .../ethernet/stmicro/stmmac/dwmac-starfive.c  | 32 ++++++++++++++++---
 2 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index 85dcda51df052..4ec61f1ee71a2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -165,9 +165,9 @@ config DWMAC_STARFIVE
 	help
 	  Support for ethernet controllers on StarFive RISC-V SoCs
 
-	  This selects the StarFive platform specific glue layer support for
-	  the stmmac device driver. This driver is used for StarFive JH7110
-	  ethernet controller.
+	  This selects the StarFive platform specific glue layer support
+	  for the stmmac device driver. This driver is used for the
+	  StarFive JH7100 and JH7110 ethernet controllers.
 
 config DWMAC_STI
 	tristate "STi GMAC support"
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
index 5d630affb4d15..4e1076faee0cd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
@@ -15,13 +15,20 @@
 
 #include "stmmac_platform.h"
 
-#define STARFIVE_DWMAC_PHY_INFT_RGMII	0x1
-#define STARFIVE_DWMAC_PHY_INFT_RMII	0x4
-#define STARFIVE_DWMAC_PHY_INFT_FIELD	0x7U
+#define STARFIVE_DWMAC_PHY_INFT_RGMII		0x1
+#define STARFIVE_DWMAC_PHY_INFT_RMII		0x4
+#define STARFIVE_DWMAC_PHY_INFT_FIELD		0x7U
+
+#define JH7100_SYSMAIN_REGISTER49_DLYCHAIN	0xc8
+
+struct starfive_dwmac_data {
+	unsigned int gtxclk_dlychain;
+};
 
 struct starfive_dwmac {
 	struct device *dev;
 	struct clk *clk_tx;
+	const struct starfive_dwmac_data *data;
 };
 
 static void starfive_dwmac_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode)
@@ -67,6 +74,8 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat)
 
 	case PHY_INTERFACE_MODE_RGMII:
 	case PHY_INTERFACE_MODE_RGMII_ID:
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+	case PHY_INTERFACE_MODE_RGMII_TXID:
 		mode = STARFIVE_DWMAC_PHY_INFT_RGMII;
 		break;
 
@@ -89,6 +98,14 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat)
 	if (err)
 		return dev_err_probe(dwmac->dev, err, "error setting phy mode\n");
 
+	if (dwmac->data) {
+		err = regmap_write(regmap, JH7100_SYSMAIN_REGISTER49_DLYCHAIN,
+				   dwmac->data->gtxclk_dlychain);
+		if (err)
+			return dev_err_probe(dwmac->dev, err,
+					     "error selecting gtxclk delay chain\n");
+	}
+
 	return 0;
 }
 
@@ -114,6 +131,8 @@ static int starfive_dwmac_probe(struct platform_device *pdev)
 	if (!dwmac)
 		return -ENOMEM;
 
+	dwmac->data = device_get_match_data(&pdev->dev);
+
 	dwmac->clk_tx = devm_clk_get_enabled(&pdev->dev, "tx");
 	if (IS_ERR(dwmac->clk_tx))
 		return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_tx),
@@ -144,8 +163,13 @@ static int starfive_dwmac_probe(struct platform_device *pdev)
 	return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 }
 
+static const struct starfive_dwmac_data jh7100_data = {
+	.gtxclk_dlychain = 4,
+};
+
 static const struct of_device_id starfive_dwmac_match[] = {
-	{ .compatible = "starfive,jh7110-dwmac"	},
+	{ .compatible = "starfive,jh7100-dwmac", .data = &jh7100_data },
+	{ .compatible = "starfive,jh7110-dwmac" },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, starfive_dwmac_match);
-- 
2.43.0

[PATCH AUTOSEL 6.8 07/68] net: stmmac: dwmac-starfive: Add support for JH7100 SoC

[Sasha Levin]

From: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>

[ Upstream commit 8d4597b871210429bda0f5c3a8816b7d9b6daf7e ]

Add a missing quirk to enable support for the StarFive JH7100 SoC.

Additionally, for greater flexibility in operation, allow using the
rgmii-rxid and rgmii-txid phy modes.

Co-developed-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@collabora.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/stmicro/stmmac/Kconfig   |  6 ++--
 .../ethernet/stmicro/stmmac/dwmac-starfive.c  | 32 ++++++++++++++++---
 2 files changed, 31 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig
index 85dcda51df052..4ec61f1ee71a2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/Kconfig
+++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig
@@ -165,9 +165,9 @@ config DWMAC_STARFIVE
 	help
 	  Support for ethernet controllers on StarFive RISC-V SoCs
 
-	  This selects the StarFive platform specific glue layer support for
-	  the stmmac device driver. This driver is used for StarFive JH7110
-	  ethernet controller.
+	  This selects the StarFive platform specific glue layer support
+	  for the stmmac device driver. This driver is used for the
+	  StarFive JH7100 and JH7110 ethernet controllers.
 
 config DWMAC_STI
 	tristate "STi GMAC support"
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
index 5d630affb4d15..4e1076faee0cd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-starfive.c
@@ -15,13 +15,20 @@
 
 #include "stmmac_platform.h"
 
-#define STARFIVE_DWMAC_PHY_INFT_RGMII	0x1
-#define STARFIVE_DWMAC_PHY_INFT_RMII	0x4
-#define STARFIVE_DWMAC_PHY_INFT_FIELD	0x7U
+#define STARFIVE_DWMAC_PHY_INFT_RGMII		0x1
+#define STARFIVE_DWMAC_PHY_INFT_RMII		0x4
+#define STARFIVE_DWMAC_PHY_INFT_FIELD		0x7U
+
+#define JH7100_SYSMAIN_REGISTER49_DLYCHAIN	0xc8
+
+struct starfive_dwmac_data {
+	unsigned int gtxclk_dlychain;
+};
 
 struct starfive_dwmac {
 	struct device *dev;
 	struct clk *clk_tx;
+	const struct starfive_dwmac_data *data;
 };
 
 static void starfive_dwmac_fix_mac_speed(void *priv, unsigned int speed, unsigned int mode)
@@ -67,6 +74,8 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat)
 
 	case PHY_INTERFACE_MODE_RGMII:
 	case PHY_INTERFACE_MODE_RGMII_ID:
+	case PHY_INTERFACE_MODE_RGMII_RXID:
+	case PHY_INTERFACE_MODE_RGMII_TXID:
 		mode = STARFIVE_DWMAC_PHY_INFT_RGMII;
 		break;
 
@@ -89,6 +98,14 @@ static int starfive_dwmac_set_mode(struct plat_stmmacenet_data *plat_dat)
 	if (err)
 		return dev_err_probe(dwmac->dev, err, "error setting phy mode\n");
 
+	if (dwmac->data) {
+		err = regmap_write(regmap, JH7100_SYSMAIN_REGISTER49_DLYCHAIN,
+				   dwmac->data->gtxclk_dlychain);
+		if (err)
+			return dev_err_probe(dwmac->dev, err,
+					     "error selecting gtxclk delay chain\n");
+	}
+
 	return 0;
 }
 
@@ -114,6 +131,8 @@ static int starfive_dwmac_probe(struct platform_device *pdev)
 	if (!dwmac)
 		return -ENOMEM;
 
+	dwmac->data = device_get_match_data(&pdev->dev);
+
 	dwmac->clk_tx = devm_clk_get_enabled(&pdev->dev, "tx");
 	if (IS_ERR(dwmac->clk_tx))
 		return dev_err_probe(&pdev->dev, PTR_ERR(dwmac->clk_tx),
@@ -144,8 +163,13 @@ static int starfive_dwmac_probe(struct platform_device *pdev)
 	return stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
 }
 
+static const struct starfive_dwmac_data jh7100_data = {
+	.gtxclk_dlychain = 4,
+};
+
 static const struct of_device_id starfive_dwmac_match[] = {
-	{ .compatible = "starfive,jh7110-dwmac"	},
+	{ .compatible = "starfive,jh7100-dwmac", .data = &jh7100_data },
+	{ .compatible = "starfive,jh7110-dwmac" },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, starfive_dwmac_match);
-- 
2.43.0


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[PATCH AUTOSEL 6.8 08/68] net: phy: phy_device: Prevent nullptr exceptions on ISR

[Sasha Levin]

From: Andre Werner <andre.werner@systec-electronic.com>

[ Upstream commit 61c81872815f46006982bb80460c0c80a949b35b ]

If phydev->irq is set unconditionally, check
for valid interrupt handler or fall back to polling mode to prevent
nullptr exceptions in interrupt service routine.

Signed-off-by: Andre Werner <andre.werner@systec-electronic.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20240129135734.18975-2-andre.werner@systec-electronic.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/phy/phy_device.c | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c
index 3611ea64875ef..7cbe7c7141773 100644
--- a/drivers/net/phy/phy_device.c
+++ b/drivers/net/phy/phy_device.c
@@ -1413,6 +1413,11 @@ int phy_sfp_probe(struct phy_device *phydev,
 }
 EXPORT_SYMBOL(phy_sfp_probe);
 
+static bool phy_drv_supports_irq(struct phy_driver *phydrv)
+{
+	return phydrv->config_intr && phydrv->handle_interrupt;
+}
+
 /**
  * phy_attach_direct - attach a network device to a given PHY device pointer
  * @dev: network device to attach
@@ -1527,6 +1532,9 @@ int phy_attach_direct(struct net_device *dev, struct phy_device *phydev,
 	if (phydev->dev_flags & PHY_F_NO_IRQ)
 		phydev->irq = PHY_POLL;
 
+	if (!phy_drv_supports_irq(phydev->drv) && phy_interrupt_is_valid(phydev))
+		phydev->irq = PHY_POLL;
+
 	/* Port is set to PORT_TP by default and the actual PHY driver will set
 	 * it to different value depending on the PHY configuration. If we have
 	 * the generic PHY driver we can't figure it out, thus set the old
@@ -2992,11 +3000,6 @@ s32 phy_get_internal_delay(struct phy_device *phydev, struct device *dev,
 }
 EXPORT_SYMBOL(phy_get_internal_delay);
 
-static bool phy_drv_supports_irq(struct phy_driver *phydrv)
-{
-	return phydrv->config_intr && phydrv->handle_interrupt;
-}
-
 static int phy_led_set_brightness(struct led_classdev *led_cdev,
 				  enum led_brightness value)
 {
-- 
2.43.0

[PATCH AUTOSEL 6.8 09/68] wifi: rtw89: pci: validate RX tag for RXQ and RPQ

[Sasha Levin]

From: Ping-Ke Shih <pkshih@realtek.com>

[ Upstream commit 0bc7d1d4e63cf31ff1b4396b0e2f0e3c76828d26 ]

PCI RX ring is a kind of read/write index ring, and DMA and ring index are
asynchronous, so suddenly driver gets newer index ahead before DMA. To
resolve this rare situation, we use a RX tag as helpers to make sure DMA
is done.

The RX tag is a 13-bit value, and range is from 1 ~ 0x1FFF, but 0 isn't
used so should be skipped.

Only enable this validation to coming WiFi 7 chips, because existing
chips use different design and don't really meet this situation.

Add missed rx_ring_eq_is_full for 8851BE by the way.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240121071826.10159-4-pkshih@realtek.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/realtek/rtw89/pci.c      | 60 +++++++++++++++++--
 drivers/net/wireless/realtek/rtw89/pci.h      |  4 +-
 .../net/wireless/realtek/rtw89/rtw8851be.c    |  2 +
 .../net/wireless/realtek/rtw89/rtw8852ae.c    |  1 +
 .../net/wireless/realtek/rtw89/rtw8852be.c    |  1 +
 .../net/wireless/realtek/rtw89/rtw8852ce.c    |  1 +
 .../net/wireless/realtek/rtw89/rtw8922ae.c    |  1 +
 7 files changed, 63 insertions(+), 7 deletions(-)

diff --git a/drivers/net/wireless/realtek/rtw89/pci.c b/drivers/net/wireless/realtek/rtw89/pci.c
index 769f1ce62ebcc..cb03474f81552 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.c
+++ b/drivers/net/wireless/realtek/rtw89/pci.c
@@ -155,8 +155,8 @@ static void rtw89_pci_sync_skb_for_device(struct rtw89_dev *rtwdev,
 				   DMA_FROM_DEVICE);
 }
 
-static int rtw89_pci_rxbd_info_update(struct rtw89_dev *rtwdev,
-				      struct sk_buff *skb)
+static void rtw89_pci_rxbd_info_update(struct rtw89_dev *rtwdev,
+				       struct sk_buff *skb)
 {
 	struct rtw89_pci_rxbd_info *rxbd_info;
 	struct rtw89_pci_rx_info *rx_info = RTW89_PCI_RX_SKB_CB(skb);
@@ -166,10 +166,58 @@ static int rtw89_pci_rxbd_info_update(struct rtw89_dev *rtwdev,
 	rx_info->ls = le32_get_bits(rxbd_info->dword, RTW89_PCI_RXBD_LS);
 	rx_info->len = le32_get_bits(rxbd_info->dword, RTW89_PCI_RXBD_WRITE_SIZE);
 	rx_info->tag = le32_get_bits(rxbd_info->dword, RTW89_PCI_RXBD_TAG);
+}
+
+static int rtw89_pci_validate_rx_tag(struct rtw89_dev *rtwdev,
+				     struct rtw89_pci_rx_ring *rx_ring,
+				     struct sk_buff *skb)
+{
+	struct rtw89_pci_rx_info *rx_info = RTW89_PCI_RX_SKB_CB(skb);
+	const struct rtw89_pci_info *info = rtwdev->pci_info;
+	u32 target_rx_tag;
+
+	if (!info->check_rx_tag)
+		return 0;
+
+	/* valid range is 1 ~ 0x1FFF */
+	if (rx_ring->target_rx_tag == 0)
+		target_rx_tag = 1;
+	else
+		target_rx_tag = rx_ring->target_rx_tag;
+
+	if (rx_info->tag != target_rx_tag) {
+		rtw89_debug(rtwdev, RTW89_DBG_UNEXP, "mismatch RX tag 0x%x 0x%x\n",
+			    rx_info->tag, target_rx_tag);
+		return -EAGAIN;
+	}
 
 	return 0;
 }
 
+static
+int rtw89_pci_sync_skb_for_device_and_validate_rx_info(struct rtw89_dev *rtwdev,
+						       struct rtw89_pci_rx_ring *rx_ring,
+						       struct sk_buff *skb)
+{
+	struct rtw89_pci_rx_info *rx_info = RTW89_PCI_RX_SKB_CB(skb);
+	int rx_tag_retry = 100;
+	int ret;
+
+	do {
+		rtw89_pci_sync_skb_for_cpu(rtwdev, skb);
+		rtw89_pci_rxbd_info_update(rtwdev, skb);
+
+		ret = rtw89_pci_validate_rx_tag(rtwdev, rx_ring, skb);
+		if (ret != -EAGAIN)
+			break;
+	} while (rx_tag_retry--);
+
+	/* update target rx_tag for next RX */
+	rx_ring->target_rx_tag = rx_info->tag + 1;
+
+	return ret;
+}
+
 static void rtw89_pci_ctrl_txdma_ch_pcie(struct rtw89_dev *rtwdev, bool enable)
 {
 	const struct rtw89_pci_info *info = rtwdev->pci_info;
@@ -259,9 +307,8 @@ static u32 rtw89_pci_rxbd_deliver_skbs(struct rtw89_dev *rtwdev,
 
 	skb_idx = rtw89_pci_get_rx_skb_idx(rtwdev, bd_ring);
 	skb = rx_ring->buf[skb_idx];
-	rtw89_pci_sync_skb_for_cpu(rtwdev, skb);
 
-	ret = rtw89_pci_rxbd_info_update(rtwdev, skb);
+	ret = rtw89_pci_sync_skb_for_device_and_validate_rx_info(rtwdev, rx_ring, skb);
 	if (ret) {
 		rtw89_err(rtwdev, "failed to update %d RXBD info: %d\n",
 			  bd_ring->wp, ret);
@@ -549,9 +596,8 @@ static u32 rtw89_pci_release_tx_skbs(struct rtw89_dev *rtwdev,
 
 	skb_idx = rtw89_pci_get_rx_skb_idx(rtwdev, bd_ring);
 	skb = rx_ring->buf[skb_idx];
-	rtw89_pci_sync_skb_for_cpu(rtwdev, skb);
 
-	ret = rtw89_pci_rxbd_info_update(rtwdev, skb);
+	ret = rtw89_pci_sync_skb_for_device_and_validate_rx_info(rtwdev, rx_ring, skb);
 	if (ret) {
 		rtw89_err(rtwdev, "failed to update %d RXBD info: %d\n",
 			  bd_ring->wp, ret);
@@ -1550,6 +1596,7 @@ static void rtw89_pci_reset_trx_rings(struct rtw89_dev *rtwdev)
 		bd_ring->rp = 0;
 		rx_ring->diliver_skb = NULL;
 		rx_ring->diliver_desc.ready = false;
+		rx_ring->target_rx_tag = 0;
 
 		rtw89_write16(rtwdev, addr_num, bd_ring->len);
 		rtw89_write32(rtwdev, addr_desa_l, bd_ring->dma);
@@ -3148,6 +3195,7 @@ static int rtw89_pci_alloc_rx_ring(struct rtw89_dev *rtwdev,
 	rx_ring->buf_sz = buf_sz;
 	rx_ring->diliver_skb = NULL;
 	rx_ring->diliver_desc.ready = false;
+	rx_ring->target_rx_tag = 0;
 
 	for (i = 0; i < len; i++) {
 		skb = dev_alloc_skb(buf_sz);
diff --git a/drivers/net/wireless/realtek/rtw89/pci.h b/drivers/net/wireless/realtek/rtw89/pci.h
index ca5de77fee90a..83a36358504f4 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.h
+++ b/drivers/net/wireless/realtek/rtw89/pci.h
@@ -1234,6 +1234,7 @@ struct rtw89_pci_info {
 	enum mac_ax_pcie_func_ctrl io_rcy_en;
 	enum mac_ax_io_rcy_tmr io_rcy_tmr;
 	bool rx_ring_eq_is_full;
+	bool check_rx_tag;
 
 	u32 init_cfg_reg;
 	u32 txhci_en_bit;
@@ -1276,7 +1277,7 @@ struct rtw89_pci_tx_data {
 
 struct rtw89_pci_rx_info {
 	dma_addr_t dma;
-	u32 fs:1, ls:1, tag:11, len:14;
+	u32 fs:1, ls:1, tag:13, len:14;
 };
 
 #define RTW89_PCI_TXBD_OPTION_LS	BIT(14)
@@ -1405,6 +1406,7 @@ struct rtw89_pci_rx_ring {
 	u32 buf_sz;
 	struct sk_buff *diliver_skb;
 	struct rtw89_rx_desc_info diliver_desc;
+	u32 target_rx_tag:13;
 };
 
 struct rtw89_pci_isrs {
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8851be.c b/drivers/net/wireless/realtek/rtw89/rtw8851be.c
index ade69bd30fc86..ca1374a717272 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8851be.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8851be.c
@@ -25,6 +25,8 @@ static const struct rtw89_pci_info rtw8851b_pci_info = {
 	.autok_en		= MAC_AX_PCIE_DISABLE,
 	.io_rcy_en		= MAC_AX_PCIE_DISABLE,
 	.io_rcy_tmr		= MAC_AX_IO_RCY_ANA_TMR_6MS,
+	.rx_ring_eq_is_full	= false,
+	.check_rx_tag		= false,
 
 	.init_cfg_reg		= R_AX_PCIE_INIT_CFG1,
 	.txhci_en_bit		= B_AX_TXHCI_EN,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852ae.c b/drivers/net/wireless/realtek/rtw89/rtw8852ae.c
index f1e890bde0499..7c6ffedb77e27 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852ae.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852ae.c
@@ -26,6 +26,7 @@ static const struct rtw89_pci_info rtw8852a_pci_info = {
 	.io_rcy_en		= MAC_AX_PCIE_DISABLE,
 	.io_rcy_tmr		= MAC_AX_IO_RCY_ANA_TMR_6MS,
 	.rx_ring_eq_is_full	= false,
+	.check_rx_tag		= false,
 
 	.init_cfg_reg		= R_AX_PCIE_INIT_CFG1,
 	.txhci_en_bit		= B_AX_TXHCI_EN,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852be.c b/drivers/net/wireless/realtek/rtw89/rtw8852be.c
index 920b20bbcfb73..ed71364e6437b 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852be.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852be.c
@@ -26,6 +26,7 @@ static const struct rtw89_pci_info rtw8852b_pci_info = {
 	.io_rcy_en		= MAC_AX_PCIE_DISABLE,
 	.io_rcy_tmr		= MAC_AX_IO_RCY_ANA_TMR_6MS,
 	.rx_ring_eq_is_full	= false,
+	.check_rx_tag		= false,
 
 	.init_cfg_reg		= R_AX_PCIE_INIT_CFG1,
 	.txhci_en_bit		= B_AX_TXHCI_EN,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8852ce.c b/drivers/net/wireless/realtek/rtw89/rtw8852ce.c
index 4592de3dbd942..583ea673a4f54 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8852ce.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8852ce.c
@@ -35,6 +35,7 @@ static const struct rtw89_pci_info rtw8852c_pci_info = {
 	.io_rcy_en		= MAC_AX_PCIE_ENABLE,
 	.io_rcy_tmr		= MAC_AX_IO_RCY_ANA_TMR_6MS,
 	.rx_ring_eq_is_full	= false,
+	.check_rx_tag		= false,
 
 	.init_cfg_reg		= R_AX_HAXI_INIT_CFG1,
 	.txhci_en_bit		= B_AX_TXHCI_EN_V1,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8922ae.c b/drivers/net/wireless/realtek/rtw89/rtw8922ae.c
index 7b3d98d2c402c..9f46fb1661055 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8922ae.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8922ae.c
@@ -26,6 +26,7 @@ static const struct rtw89_pci_info rtw8922a_pci_info = {
 	.io_rcy_en		= MAC_AX_PCIE_ENABLE,
 	.io_rcy_tmr		= MAC_AX_IO_RCY_ANA_TMR_DEF,
 	.rx_ring_eq_is_full	= true,
+	.check_rx_tag		= true,
 
 	.init_cfg_reg		= R_BE_HAXI_INIT_CFG1,
 	.txhci_en_bit		= B_BE_TXDMA_EN,
-- 
2.43.0

[PATCH AUTOSEL 6.8 10/68] wifi: rtw89: pci: enlarge RX DMA buffer to consider size of RX descriptor

[Sasha Levin]

From: Ping-Ke Shih <pkshih@realtek.com>

[ Upstream commit c108b4a50dd7650941d4f4ec5c161655a73711db ]

Hardware puts RX descriptor and packet in RX DMA buffer, so it could be
over one buffer size if packet size is 11454, and then it will be split
into two segments. WiFi 7 chips use larger size of RX descriptor, so
enlarge DMA buffer size according to RX descriptor to have better
performance and simple flow.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240121071826.10159-5-pkshih@realtek.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/realtek/rtw89/pci.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtw89/pci.h b/drivers/net/wireless/realtek/rtw89/pci.h
index 83a36358504f4..772a84bd8db6b 100644
--- a/drivers/net/wireless/realtek/rtw89/pci.h
+++ b/drivers/net/wireless/realtek/rtw89/pci.h
@@ -996,7 +996,7 @@
 #define RTW89_PCI_TXWD_NUM_MAX		512
 #define RTW89_PCI_TXWD_PAGE_SIZE	128
 #define RTW89_PCI_ADDRINFO_MAX		4
-#define RTW89_PCI_RX_BUF_SIZE		11460
+#define RTW89_PCI_RX_BUF_SIZE		(11454 + 40) /* +40 for rtw89_rxdesc_long_v2 */
 
 #define RTW89_PCI_POLL_BDRAM_RST_CNT	100
 #define RTW89_PCI_MULTITAG		8
-- 
2.43.0

[PATCH AUTOSEL 6.8 11/68] VMCI: Fix memcpy() run-time warning in dg_dispatch_as_host()

[Sasha Levin]

From: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>

[ Upstream commit 19b070fefd0d024af3daa7329cbc0d00de5302ec ]

Syzkaller hit 'WARNING in dg_dispatch_as_host' bug.

memcpy: detected field-spanning write (size 56) of single field "&dg_info->msg"
at drivers/misc/vmw_vmci/vmci_datagram.c:237 (size 24)

WARNING: CPU: 0 PID: 1555 at drivers/misc/vmw_vmci/vmci_datagram.c:237
dg_dispatch_as_host+0x88e/0xa60 drivers/misc/vmw_vmci/vmci_datagram.c:237

Some code commentry, based on my understanding:

544 #define VMCI_DG_SIZE(_dg) (VMCI_DG_HEADERSIZE + (size_t)(_dg)->payload_size)
/// This is 24 + payload_size

memcpy(&dg_info->msg, dg, dg_size);
	Destination = dg_info->msg ---> this is a 24 byte
					structure(struct vmci_datagram)
	Source = dg --> this is a 24 byte structure (struct vmci_datagram)
	Size = dg_size = 24 + payload_size

{payload_size = 56-24 =32} -- Syzkaller managed to set payload_size to 32.

 35 struct delayed_datagram_info {
 36         struct datagram_entry *entry;
 37         struct work_struct work;
 38         bool in_dg_host_queue;
 39         /* msg and msg_payload must be together. */
 40         struct vmci_datagram msg;
 41         u8 msg_payload[];
 42 };

So those extra bytes of payload are copied into msg_payload[], a run time
warning is seen while fuzzing with Syzkaller.

One possible way to fix the warning is to split the memcpy() into
two parts -- one -- direct assignment of msg and second taking care of payload.

Gustavo quoted:
"Under FORTIFY_SOURCE we should not copy data across multiple members
in a structure."

Reported-by: syzkaller <syzkaller@googlegroups.com>
Suggested-by: Vegard Nossum <vegard.nossum@oracle.com>
Suggested-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Harshit Mogalapalli <harshit.m.mogalapalli@oracle.com>
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Reviewed-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/20240105164001.2129796-2-harshit.m.mogalapalli@oracle.com
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/misc/vmw_vmci/vmci_datagram.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/misc/vmw_vmci/vmci_datagram.c b/drivers/misc/vmw_vmci/vmci_datagram.c
index f50d22882476f..d1d8224c8800c 100644
--- a/drivers/misc/vmw_vmci/vmci_datagram.c
+++ b/drivers/misc/vmw_vmci/vmci_datagram.c
@@ -234,7 +234,8 @@ static int dg_dispatch_as_host(u32 context_id, struct vmci_datagram *dg)
 
 			dg_info->in_dg_host_queue = true;
 			dg_info->entry = dst_entry;
-			memcpy(&dg_info->msg, dg, dg_size);
+			dg_info->msg = *dg;
+			memcpy(&dg_info->msg_payload, dg + 1, dg->payload_size);
 
 			INIT_WORK(&dg_info->work, dg_delayed_dispatch);
 			schedule_work(&dg_info->work);
-- 
2.43.0

[PATCH AUTOSEL 6.8 12/68] wifi: iwlwifi: pcie: Add the PCI device id for new hardware

[Sasha Levin]

From: Mukesh Sisodiya <mukesh.sisodiya@intel.com>

[ Upstream commit 6770eee75148ba10c0c051885379714773e00b48 ]

Add the support for a new PCI device id.

Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Reviewed-by: Gregory Greenman <gregory.greenman@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240129211905.fde32107e0a3.I597cff4f340e4bed12b7568a0ad504bd4b2c1cf8@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
index 2c9b98c8184b5..271be64ce19ae 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
@@ -502,6 +502,7 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
 
 /* Bz devices */
 	{IWL_PCI_DEVICE(0x2727, PCI_ANY_ID, iwl_bz_trans_cfg)},
+	{IWL_PCI_DEVICE(0x272D, PCI_ANY_ID, iwl_bz_trans_cfg)},
 	{IWL_PCI_DEVICE(0x272b, PCI_ANY_ID, iwl_bz_trans_cfg)},
 	{IWL_PCI_DEVICE(0xA840, PCI_ANY_ID, iwl_bz_trans_cfg)},
 	{IWL_PCI_DEVICE(0x7740, PCI_ANY_ID, iwl_bz_trans_cfg)},
-- 
2.43.0

[PATCH AUTOSEL 6.8 13/68] arm64: dts: qcom: qcm6490-idp: Add definition for three LEDs

[Sasha Levin]

From: Hui Liu <quic_huliu@quicinc.com>

[ Upstream commit 8385383cc2c2f7039ecc57864043112cdc7026c7 ]

Add definition for three LEDs to make sure they can
be enabled base on QCOM LPG LED driver.

Signed-off-by: Hui Liu <quic_huliu@quicinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240126-lpg-v6-1-f879cecbce69@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/qcom/qcm6490-idp.dts | 28 ++++++++++++++++++++++++
 1 file changed, 28 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcm6490-idp.dts b/arch/arm64/boot/dts/qcom/qcm6490-idp.dts
index 03e97e27d16d4..b3853fba5c3c5 100644
--- a/arch/arm64/boot/dts/qcom/qcm6490-idp.dts
+++ b/arch/arm64/boot/dts/qcom/qcm6490-idp.dts
@@ -5,6 +5,7 @@
 
 /dts-v1/;
 
+#include <dt-bindings/leds/common.h>
 #include <dt-bindings/regulator/qcom,rpmh-regulator.h>
 #include "sc7280.dtsi"
 #include "pm7325.dtsi"
@@ -415,6 +416,33 @@ vreg_bob_3p296: bob {
 	};
 };
 
+&pm8350c_pwm {
+	status = "okay";
+
+	multi-led {
+		color = <LED_COLOR_ID_RGB>;
+		function = LED_FUNCTION_STATUS;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		led@1 {
+			reg = <1>;
+			color = <LED_COLOR_ID_RED>;
+		};
+
+		led@2 {
+			reg = <2>;
+			color = <LED_COLOR_ID_GREEN>;
+		};
+
+		led@3 {
+			reg = <3>;
+			color = <LED_COLOR_ID_BLUE>;
+		};
+	};
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };
-- 
2.43.0

[PATCH AUTOSEL 6.8 14/68] net: dsa: qca8k: put MDIO controller OF node if unavailable

[Sasha Levin]

From: Vladimir Oltean <vladimir.oltean@nxp.com>

[ Upstream commit 08932323ccf7f8c4c85db9cb12a791ed81264f66 ]

It was pointed out during the review [1] of commit e66bf63a7f67 ("net:
dsa: qca8k: skip MDIO bus creation if its OF node has status =
"disabled"") that we now leak a reference to the "mdio" OF node if it is
disabled.

This is only a concern when using dynamic OF as far as I can tell (like
probing on an overlay), since OF nodes are never freed in the regular
case. Additionally, I'm unaware of any actual device trees (in
production or elsewhere) which have status = "disabled" for the MDIO OF
node. So handling this as a simple enhancement.

[1] https://lore.kernel.org/netdev/CAJq09z4--Ug+3FAmp=EimQ8HTQYOWOuVon-PUMGB5a1N=RPv4g@mail.gmail.com/

Suggested-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/dsa/qca/qca8k-8xxx.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/dsa/qca/qca8k-8xxx.c b/drivers/net/dsa/qca/qca8k-8xxx.c
index 7a864329cb726..95d78b3181d1c 100644
--- a/drivers/net/dsa/qca/qca8k-8xxx.c
+++ b/drivers/net/dsa/qca/qca8k-8xxx.c
@@ -954,7 +954,7 @@ qca8k_mdio_register(struct qca8k_priv *priv)
 
 	mdio = of_get_child_by_name(dev->of_node, "mdio");
 	if (mdio && !of_device_is_available(mdio))
-		goto out;
+		goto out_put_node;
 
 	bus = devm_mdiobus_alloc(dev);
 	if (!bus) {
@@ -988,7 +988,6 @@ qca8k_mdio_register(struct qca8k_priv *priv)
 
 out_put_node:
 	of_node_put(mdio);
-out:
 	return err;
 }
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 15/68] arm64: dts: ti: Makefile: Add HDMI audio check for AM62A7-SK

[Sasha Levin]

From: Aradhya Bhatia <a-bhatia1@ti.com>

[ Upstream commit cff6dd01a68fe9a8aaab724ef4e21f37eff609e9 ]

HDMI audio can be enabled over AM62A-SK using the same DT overlay that
is used for AM625 / AM62-LP SK-EVMs.

Add the sk.dtb + hdmi-audio.dtbo combination for AM62A7-SK as well, to
check for overlay applicability during DTBS compile tests.

Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Link: https://lore.kernel.org/r/20240201125452.1920623-4-a-bhatia1@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/ti/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 52c1dc9103087..a0304fcd6b5ea 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -101,6 +101,7 @@ k3-am62a7-sk-csi2-ov5640-dtbs := k3-am62a7-sk.dtb \
 	k3-am62x-sk-csi2-ov5640.dtbo
 k3-am62a7-sk-csi2-tevi-ov5640-dtbs := k3-am62a7-sk.dtb \
 	k3-am62x-sk-csi2-tevi-ov5640.dtbo
+k3-am62a7-sk-hdmi-audio-dtbs := k3-am62a7-sk.dtb k3-am62x-sk-hdmi-audio.dtbo
 k3-am642-tqma64xxl-mbax4xxl-sdcard-dtbs := \
 	k3-am642-tqma64xxl-mbax4xxl.dtb k3-am64-tqma64xxl-mbax4xxl-sdcard.dtbo
 k3-am642-tqma64xxl-mbax4xxl-wlan-dtbs := \
@@ -118,6 +119,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-am62-lp-sk-hdmi-audio.dtb \
 	k3-am62a7-sk-csi2-imx219.dtb \
 	k3-am62a7-sk-csi2-ov5640.dtb \
+	k3-am62a7-sk-hdmi-audio.dtb \
 	k3-am642-tqma64xxl-mbax4xxl-sdcard.dtb \
 	k3-am642-tqma64xxl-mbax4xxl-wlan.dtb \
 	k3-j721e-evm-pcie0-ep.dtb \
-- 
2.43.0

[PATCH AUTOSEL 6.8 15/68] arm64: dts: ti: Makefile: Add HDMI audio check for AM62A7-SK

[Sasha Levin]

From: Aradhya Bhatia <a-bhatia1@ti.com>

[ Upstream commit cff6dd01a68fe9a8aaab724ef4e21f37eff609e9 ]

HDMI audio can be enabled over AM62A-SK using the same DT overlay that
is used for AM625 / AM62-LP SK-EVMs.

Add the sk.dtb + hdmi-audio.dtbo combination for AM62A7-SK as well, to
check for overlay applicability during DTBS compile tests.

Signed-off-by: Aradhya Bhatia <a-bhatia1@ti.com>
Link: https://lore.kernel.org/r/20240201125452.1920623-4-a-bhatia1@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/ti/Makefile | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makefile
index 52c1dc9103087..a0304fcd6b5ea 100644
--- a/arch/arm64/boot/dts/ti/Makefile
+++ b/arch/arm64/boot/dts/ti/Makefile
@@ -101,6 +101,7 @@ k3-am62a7-sk-csi2-ov5640-dtbs := k3-am62a7-sk.dtb \
 	k3-am62x-sk-csi2-ov5640.dtbo
 k3-am62a7-sk-csi2-tevi-ov5640-dtbs := k3-am62a7-sk.dtb \
 	k3-am62x-sk-csi2-tevi-ov5640.dtbo
+k3-am62a7-sk-hdmi-audio-dtbs := k3-am62a7-sk.dtb k3-am62x-sk-hdmi-audio.dtbo
 k3-am642-tqma64xxl-mbax4xxl-sdcard-dtbs := \
 	k3-am642-tqma64xxl-mbax4xxl.dtb k3-am64-tqma64xxl-mbax4xxl-sdcard.dtbo
 k3-am642-tqma64xxl-mbax4xxl-wlan-dtbs := \
@@ -118,6 +119,7 @@ dtb- += k3-am625-beagleplay-csi2-ov5640.dtb \
 	k3-am62-lp-sk-hdmi-audio.dtb \
 	k3-am62a7-sk-csi2-imx219.dtb \
 	k3-am62a7-sk-csi2-ov5640.dtb \
+	k3-am62a7-sk-hdmi-audio.dtb \
 	k3-am642-tqma64xxl-mbax4xxl-sdcard.dtb \
 	k3-am642-tqma64xxl-mbax4xxl-wlan.dtb \
 	k3-j721e-evm-pcie0-ep.dtb \
-- 
2.43.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH AUTOSEL 6.8 16/68] arm64: dts: qcom: qrb2210-rb1: disable cluster power domains

[Sasha Levin]

From: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

[ Upstream commit 7f492d48f08207e4ee23edc926b11de9f720aa61 ]

If cluster domain idle state is enabled on the RB1, the board becomes
significantly less responsive. Under certain circumstances (if some of
the devices are disabled in kernel config) the board can even lock up.

It seems this is caused by the MPM not updating wakeup timer during CPU
idle (in the same way the RPMh updates it when cluster idle state is
entered).

Disable cluster domain idle for the RB1 board until MPM driver is fixed
to cooperate with the CPU idle states.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Link: https://lore.kernel.org/r/20240130-rb1-suspend-cluster-v2-1-5bc1109b0869@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/qcom/qrb2210-rb1.dts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
index aa53b6af6d9cb..9a0308ef8b0f8 100644
--- a/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
+++ b/arch/arm64/boot/dts/qcom/qrb2210-rb1.dts
@@ -177,6 +177,24 @@ vph_pwr: regulator-vph-pwr {
 	};
 };
 
+&CPU_PD0 {
+	/delete-property/ power-domains;
+};
+
+&CPU_PD1 {
+	/delete-property/ power-domains;
+};
+
+&CPU_PD2 {
+	/delete-property/ power-domains;
+};
+
+&CPU_PD3 {
+	/delete-property/ power-domains;
+};
+
+/delete-node/ &CLUSTER_PD;
+
 &gpi_dma0 {
 	status = "okay";
 };
-- 
2.43.0

[PATCH AUTOSEL 6.8 17/68] printk: For @suppress_panic_printk check for other CPU in panic

[Sasha Levin]

From: John Ogness <john.ogness@linutronix.de>

[ Upstream commit 0ab7cdd00491b532591ef065be706301de7e448f ]

Currently @suppress_panic_printk is checked along with
non-matching @panic_cpu and current CPU. This works
because @suppress_panic_printk is only set when
panic_in_progress() is true.

Rather than relying on the @suppress_panic_printk semantics,
use the concise helper function other_cpu_in_progress(). The
helper function exists to avoid open coding such tests.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240207134103.1357162-7-john.ogness@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/printk/printk.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index f2444b581e16c..d9f20d222293b 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -2270,8 +2270,7 @@ asmlinkage int vprintk_emit(int facility, int level,
 	if (unlikely(suppress_printk))
 		return 0;
 
-	if (unlikely(suppress_panic_printk) &&
-	    atomic_read(&panic_cpu) != raw_smp_processor_id())
+	if (unlikely(suppress_panic_printk) && other_cpu_in_panic())
 		return 0;
 
 	if (level == LOGLEVEL_SCHED) {
-- 
2.43.0

[PATCH AUTOSEL 6.8 18/68] printk: Add this_cpu_in_panic()

[Sasha Levin]

From: John Ogness <john.ogness@linutronix.de>

[ Upstream commit 36652d0f3bf34899e82d31a5fa9e2bdd02fd6381 ]

There is already panic_in_progress() and other_cpu_in_panic(),
but checking if the current CPU is the panic CPU must still be
open coded.

Add this_cpu_in_panic() to complete the set.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240207134103.1357162-8-john.ogness@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/printk/internal.h |  1 +
 kernel/printk/printk.c   | 43 +++++++++++++++++++++-------------------
 2 files changed, 24 insertions(+), 20 deletions(-)

diff --git a/kernel/printk/internal.h b/kernel/printk/internal.h
index 6c2afee5ef620..ac2d9750e5f81 100644
--- a/kernel/printk/internal.h
+++ b/kernel/printk/internal.h
@@ -130,6 +130,7 @@ struct printk_message {
 };
 
 bool other_cpu_in_panic(void);
+bool this_cpu_in_panic(void);
 bool printk_get_next_message(struct printk_message *pmsg, u64 seq,
 			     bool is_extended, bool may_supress);
 
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index d9f20d222293b..742fb479b1d60 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -347,6 +347,29 @@ static bool panic_in_progress(void)
 	return unlikely(atomic_read(&panic_cpu) != PANIC_CPU_INVALID);
 }
 
+/* Return true if a panic is in progress on the current CPU. */
+bool this_cpu_in_panic(void)
+{
+	/*
+	 * We can use raw_smp_processor_id() here because it is impossible for
+	 * the task to be migrated to the panic_cpu, or away from it. If
+	 * panic_cpu has already been set, and we're not currently executing on
+	 * that CPU, then we never will be.
+	 */
+	return unlikely(atomic_read(&panic_cpu) == raw_smp_processor_id());
+}
+
+/*
+ * Return true if a panic is in progress on a remote CPU.
+ *
+ * On true, the local CPU should immediately release any printing resources
+ * that may be needed by the panic CPU.
+ */
+bool other_cpu_in_panic(void)
+{
+	return (panic_in_progress() && !this_cpu_in_panic());
+}
+
 /*
  * This is used for debugging the mess that is the VT code by
  * keeping track if we have the console semaphore held. It's
@@ -2600,26 +2623,6 @@ static int console_cpu_notify(unsigned int cpu)
 	return 0;
 }
 
-/*
- * Return true if a panic is in progress on a remote CPU.
- *
- * On true, the local CPU should immediately release any printing resources
- * that may be needed by the panic CPU.
- */
-bool other_cpu_in_panic(void)
-{
-	if (!panic_in_progress())
-		return false;
-
-	/*
-	 * We can use raw_smp_processor_id() here because it is impossible for
-	 * the task to be migrated to the panic_cpu, or away from it. If
-	 * panic_cpu has already been set, and we're not currently executing on
-	 * that CPU, then we never will be.
-	 */
-	return atomic_read(&panic_cpu) != raw_smp_processor_id();
-}
-
 /**
  * console_lock - block the console subsystem from printing
  *
-- 
2.43.0

[PATCH AUTOSEL 6.8 19/68] printk: Avoid non-panic CPUs writing to ringbuffer

[Sasha Levin]

From: John Ogness <john.ogness@linutronix.de>

[ Upstream commit 779dbc2e78d746250f07c463e13ac603b349f6f3 ]

Commit 13fb0f74d702 ("printk: Avoid livelock with heavy printk
during panic") introduced a mechanism to silence non-panic CPUs
if too many messages are being dropped. Aside from trying to
workaround the livelock bugs of legacy consoles, it was also
intended to avoid losing panic messages. However, if non-panic
CPUs are writing to the ringbuffer, then reacting to dropped
messages is too late.

Another motivation is that non-finalized messages already might
be skipped in panic(). In other words, random messages from
non-panic CPUs might already get lost. It is better to ignore
all to avoid confusion.

To avoid losing panic CPU messages, silence non-panic CPUs
immediately on panic.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240207134103.1357162-13-john.ogness@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/printk/printk.c | 26 ++++++--------------------
 1 file changed, 6 insertions(+), 20 deletions(-)

diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index 742fb479b1d60..336c092632f4e 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -462,12 +462,6 @@ static int console_msg_format = MSG_FORMAT_DEFAULT;
 static DEFINE_MUTEX(syslog_lock);
 
 #ifdef CONFIG_PRINTK
-/*
- * During panic, heavy printk by other CPUs can delay the
- * panic and risk deadlock on console resources.
- */
-static int __read_mostly suppress_panic_printk;
-
 DECLARE_WAIT_QUEUE_HEAD(log_wait);
 /* All 3 protected by @syslog_lock. */
 /* the next printk record to read by syslog(READ) or /proc/kmsg */
@@ -2293,7 +2287,12 @@ asmlinkage int vprintk_emit(int facility, int level,
 	if (unlikely(suppress_printk))
 		return 0;
 
-	if (unlikely(suppress_panic_printk) && other_cpu_in_panic())
+	/*
+	 * The messages on the panic CPU are the most important. If
+	 * non-panic CPUs are generating any messages, they will be
+	 * silently dropped.
+	 */
+	if (other_cpu_in_panic())
 		return 0;
 
 	if (level == LOGLEVEL_SCHED) {
@@ -2778,8 +2777,6 @@ void console_prepend_dropped(struct printk_message *pmsg, unsigned long dropped)
 bool printk_get_next_message(struct printk_message *pmsg, u64 seq,
 			     bool is_extended, bool may_suppress)
 {
-	static int panic_console_dropped;
-
 	struct printk_buffers *pbufs = pmsg->pbufs;
 	const size_t scratchbuf_sz = sizeof(pbufs->scratchbuf);
 	const size_t outbuf_sz = sizeof(pbufs->outbuf);
@@ -2807,17 +2804,6 @@ bool printk_get_next_message(struct printk_message *pmsg, u64 seq,
 	pmsg->seq = r.info->seq;
 	pmsg->dropped = r.info->seq - seq;
 
-	/*
-	 * Check for dropped messages in panic here so that printk
-	 * suppression can occur as early as possible if necessary.
-	 */
-	if (pmsg->dropped &&
-	    panic_in_progress() &&
-	    panic_console_dropped++ > 10) {
-		suppress_panic_printk = 1;
-		pr_warn_once("Too many dropped messages. Suppress messages on non-panic CPUs to prevent livelock.\n");
-	}
-
 	/* Skip record that has level above the console loglevel. */
 	if (may_suppress && suppress_message_printing(r.info->level))
 		goto out;
-- 
2.43.0

[PATCH AUTOSEL 6.8 20/68] panic: Flush kernel log buffer at the end

[Sasha Levin]

From: John Ogness <john.ogness@linutronix.de>

[ Upstream commit d988d9a9b9d180bfd5c1d353b3b176cb90d6861b ]

If the kernel crashes in a context where printk() calls always
defer printing (such as in NMI or inside a printk_safe section)
then the final panic messages will be deferred to irq_work. But
if irq_work is not available, the messages will not get printed
unless explicitly flushed. The result is that the final
"end Kernel panic" banner does not get printed.

Add one final flush after the last printk() call to make sure
the final panic messages make it out as well.

Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240207134103.1357162-14-john.ogness@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/panic.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/kernel/panic.c b/kernel/panic.c
index 2807639aab51d..f22d8f33ea147 100644
--- a/kernel/panic.c
+++ b/kernel/panic.c
@@ -446,6 +446,14 @@ void panic(const char *fmt, ...)
 
 	/* Do not scroll important messages printed above */
 	suppress_printk = 1;
+
+	/*
+	 * The final messages may not have been printed if in a context that
+	 * defers printing (such as NMI) and irq_work is not available.
+	 * Explicitly flush the kernel log buffer one last time.
+	 */
+	console_flush_on_panic(CONSOLE_FLUSH_PENDING);
+
 	local_irq_enable();
 	for (i = 0; ; i += PANIC_TIMER_STEP) {
 		touch_softlockup_watchdog();
-- 
2.43.0

[PATCH AUTOSEL 6.8 21/68] dump_stack: Do not get cpu_sync for panic CPU

[Sasha Levin]

From: John Ogness <john.ogness@linutronix.de>

[ Upstream commit 7412dc6d55eed6b76180e40ac3601412ebde29bd ]

dump_stack() is called in panic(). If for some reason another CPU
is holding the printk_cpu_sync and is unable to release it, the
panic CPU will be unable to continue and print the stacktrace.

Since non-panic CPUs are not allowed to store new printk messages
anyway, there is no need to synchronize the stacktrace output in
a panic situation.

For the panic CPU, do not get the printk_cpu_sync because it is
not needed and avoids a potential deadlock scenario in panic().

Link: https://lore.kernel.org/lkml/ZcIGKU8sxti38Kok@alley
Signed-off-by: John Ogness <john.ogness@linutronix.de>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240207134103.1357162-15-john.ogness@linutronix.de
Signed-off-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/printk.h   |  2 ++
 kernel/printk/internal.h |  1 -
 lib/dump_stack.c         | 16 +++++++++++++---
 3 files changed, 15 insertions(+), 4 deletions(-)

diff --git a/include/linux/printk.h b/include/linux/printk.h
index 8ef499ab3c1ed..955e31860095e 100644
--- a/include/linux/printk.h
+++ b/include/linux/printk.h
@@ -273,6 +273,8 @@ static inline void printk_trigger_flush(void)
 }
 #endif
 
+bool this_cpu_in_panic(void);
+
 #ifdef CONFIG_SMP
 extern int __printk_cpu_sync_try_get(void);
 extern void __printk_cpu_sync_wait(void);
diff --git a/kernel/printk/internal.h b/kernel/printk/internal.h
index ac2d9750e5f81..6c2afee5ef620 100644
--- a/kernel/printk/internal.h
+++ b/kernel/printk/internal.h
@@ -130,7 +130,6 @@ struct printk_message {
 };
 
 bool other_cpu_in_panic(void);
-bool this_cpu_in_panic(void);
 bool printk_get_next_message(struct printk_message *pmsg, u64 seq,
 			     bool is_extended, bool may_supress);
 
diff --git a/lib/dump_stack.c b/lib/dump_stack.c
index 83471e81501a7..222c6d6c8281a 100644
--- a/lib/dump_stack.c
+++ b/lib/dump_stack.c
@@ -96,15 +96,25 @@ static void __dump_stack(const char *log_lvl)
  */
 asmlinkage __visible void dump_stack_lvl(const char *log_lvl)
 {
+	bool in_panic = this_cpu_in_panic();
 	unsigned long flags;
 
 	/*
 	 * Permit this cpu to perform nested stack dumps while serialising
-	 * against other CPUs
+	 * against other CPUs, unless this CPU is in panic.
+	 *
+	 * When in panic, non-panic CPUs are not permitted to store new
+	 * printk messages so there is no need to synchronize the output.
+	 * This avoids potential deadlock in panic() if another CPU is
+	 * holding and unable to release the printk_cpu_sync.
 	 */
-	printk_cpu_sync_get_irqsave(flags);
+	if (!in_panic)
+		printk_cpu_sync_get_irqsave(flags);
+
 	__dump_stack(log_lvl);
-	printk_cpu_sync_put_irqrestore(flags);
+
+	if (!in_panic)
+		printk_cpu_sync_put_irqrestore(flags);
 }
 EXPORT_SYMBOL(dump_stack_lvl);
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 22/68] wifi: iwlwifi: pcie: Add new PCI device id and CNVI

[Sasha Levin]

From: Mukesh Sisodiya <mukesh.sisodiya@intel.com>

[ Upstream commit 5f4e0994996fa08d57711b5b247a0cb3085ec66a ]

Add the support for a new PCIE device-id 0x272E and a new CNVI
type.

Signed-off-by: Mukesh Sisodiya <mukesh.sisodiya@intel.com>
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Link: https://msgid.link/20240206175739.506db9b4a664.Ia2e3a77b880c449ac0e8d20b8cea25e6f07f1b81@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/intel/iwlwifi/cfg/sc.c   | 38 +++++++++++++++++--
 .../net/wireless/intel/iwlwifi/iwl-config.h   |  8 +++-
 drivers/net/wireless/intel/iwlwifi/pcie/drv.c | 15 +++++++-
 3 files changed, 55 insertions(+), 6 deletions(-)

diff --git a/drivers/net/wireless/intel/iwlwifi/cfg/sc.c b/drivers/net/wireless/intel/iwlwifi/cfg/sc.c
index 80eb9b4995389..156c428547497 100644
--- a/drivers/net/wireless/intel/iwlwifi/cfg/sc.c
+++ b/drivers/net/wireless/intel/iwlwifi/cfg/sc.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
  * Copyright (C) 2015-2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2023 Intel Corporation
+ * Copyright (C) 2018-2024 Intel Corporation
  */
 #include <linux/module.h>
 #include <linux/stringify.h>
@@ -33,6 +33,10 @@
 #define IWL_SC_A_GF_A_FW_PRE		"iwlwifi-sc-a0-gf-a0"
 #define IWL_SC_A_GF4_A_FW_PRE		"iwlwifi-sc-a0-gf4-a0"
 #define IWL_SC_A_WH_A_FW_PRE		"iwlwifi-sc-a0-wh-a0"
+#define IWL_SC2_A_FM_C_FW_PRE		"iwlwifi-sc2-a0-fm-c0"
+#define IWL_SC2_A_WH_A_FW_PRE		"iwlwifi-sc2-a0-wh-a0"
+#define IWL_SC2F_A_FM_C_FW_PRE		"iwlwifi-sc2f-a0-fm-c0"
+#define IWL_SC2F_A_WH_A_FW_PRE		"iwlwifi-sc2f-a0-wh-a0"
 
 #define IWL_SC_A_FM_B_FW_MODULE_FIRMWARE(api) \
 	IWL_SC_A_FM_B_FW_PRE "-" __stringify(api) ".ucode"
@@ -48,6 +52,14 @@
 	IWL_SC_A_GF4_A_FW_PRE "-" __stringify(api) ".ucode"
 #define IWL_SC_A_WH_A_FW_MODULE_FIRMWARE(api) \
 	IWL_SC_A_WH_A_FW_PRE "-" __stringify(api) ".ucode"
+#define IWL_SC2_A_FM_C_FW_MODULE_FIRMWARE(api) \
+	IWL_SC2_A_FM_C_FW_PRE "-" __stringify(api) ".ucode"
+#define IWL_SC2_A_WH_A_FW_MODULE_FIRMWARE(api) \
+	IWL_SC2_A_WH_A_FW_PRE "-" __stringify(api) ".ucode"
+#define IWL_SC2F_A_FM_C_FW_MODULE_FIRMWARE(api) \
+	IWL_SC2F_A_FM_C_FW_PRE "-" __stringify(api) ".ucode"
+#define IWL_SC2F_A_WH_A_FW_MODULE_FIRMWARE(api) \
+	IWL_SC2F_A_WH_A_FW_PRE "-" __stringify(api) ".ucode"
 
 static const struct iwl_base_params iwl_sc_base_params = {
 	.eeprom_size = OTP_LOW_IMAGE_SIZE_32K,
@@ -124,6 +136,9 @@ static const struct iwl_base_params iwl_sc_base_params = {
 
 #define IWL_DEVICE_SC							\
 	IWL_DEVICE_BZ_COMMON,						\
+	.uhb_supported = true,						\
+	.features = IWL_TX_CSUM_NETIF_FLAGS | NETIF_F_RXCSUM,		\
+	.num_rbds = IWL_NUM_RBDS_SC_EHT,				\
 	.ht_params = &iwl_22000_ht_params
 
 /*
@@ -149,10 +164,21 @@ const char iwl_sc_name[] = "Intel(R) TBD Sc device";
 
 const struct iwl_cfg iwl_cfg_sc = {
 	.fw_name_mac = "sc",
-	.uhb_supported = true,
 	IWL_DEVICE_SC,
-	.features = IWL_TX_CSUM_NETIF_FLAGS | NETIF_F_RXCSUM,
-	.num_rbds = IWL_NUM_RBDS_SC_EHT,
+};
+
+const char iwl_sc2_name[] = "Intel(R) TBD Sc2 device";
+
+const struct iwl_cfg iwl_cfg_sc2 = {
+	.fw_name_mac = "sc2",
+	IWL_DEVICE_SC,
+};
+
+const char iwl_sc2f_name[] = "Intel(R) TBD Sc2f device";
+
+const struct iwl_cfg iwl_cfg_sc2f = {
+	.fw_name_mac = "sc2f",
+	IWL_DEVICE_SC,
 };
 
 MODULE_FIRMWARE(IWL_SC_A_FM_B_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));
@@ -162,3 +188,7 @@ MODULE_FIRMWARE(IWL_SC_A_HR_B_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL_SC_A_GF_A_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL_SC_A_GF4_A_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL_SC_A_WH_A_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));
+MODULE_FIRMWARE(IWL_SC2_A_FM_C_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));
+MODULE_FIRMWARE(IWL_SC2_A_WH_A_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));
+MODULE_FIRMWARE(IWL_SC2F_A_FM_C_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));
+MODULE_FIRMWARE(IWL_SC2F_A_WH_A_FW_MODULE_FIRMWARE(IWL_SC_UCODE_API_MAX));
diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-config.h b/drivers/net/wireless/intel/iwlwifi/iwl-config.h
index ae6f1cd4d6605..e99d691362a86 100644
--- a/drivers/net/wireless/intel/iwlwifi/iwl-config.h
+++ b/drivers/net/wireless/intel/iwlwifi/iwl-config.h
@@ -2,7 +2,7 @@
 /*
  * Copyright (C) 2005-2014, 2018-2021 Intel Corporation
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
- * Copyright (C) 2018-2023 Intel Corporation
+ * Copyright (C) 2018-2024 Intel Corporation
  */
 #ifndef __IWL_CONFIG_H__
 #define __IWL_CONFIG_H__
@@ -418,6 +418,8 @@ struct iwl_cfg {
 #define IWL_CFG_MAC_TYPE_BZ		0x46
 #define IWL_CFG_MAC_TYPE_GL		0x47
 #define IWL_CFG_MAC_TYPE_SC		0x48
+#define IWL_CFG_MAC_TYPE_SC2		0x49
+#define IWL_CFG_MAC_TYPE_SC2F		0x4A
 
 #define IWL_CFG_RF_TYPE_TH		0x105
 #define IWL_CFG_RF_TYPE_TH1		0x108
@@ -527,6 +529,8 @@ extern const char iwl_ax231_name[];
 extern const char iwl_ax411_name[];
 extern const char iwl_bz_name[];
 extern const char iwl_sc_name[];
+extern const char iwl_sc2_name[];
+extern const char iwl_sc2f_name[];
 #if IS_ENABLED(CONFIG_IWLDVM)
 extern const struct iwl_cfg iwl5300_agn_cfg;
 extern const struct iwl_cfg iwl5100_agn_cfg;
@@ -632,6 +636,8 @@ extern const struct iwl_cfg iwl_cfg_bz;
 extern const struct iwl_cfg iwl_cfg_gl;
 
 extern const struct iwl_cfg iwl_cfg_sc;
+extern const struct iwl_cfg iwl_cfg_sc2;
+extern const struct iwl_cfg iwl_cfg_sc2f;
 #endif /* CONFIG_IWLMVM */
 
 #endif /* __IWL_CONFIG_H__ */
diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
index 271be64ce19ae..ba3db601ab878 100644
--- a/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
+++ b/drivers/net/wireless/intel/iwlwifi/pcie/drv.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
 /*
- * Copyright (C) 2005-2014, 2018-2023 Intel Corporation
+ * Copyright (C) 2005-2014, 2018-2024 Intel Corporation
  * Copyright (C) 2013-2015 Intel Mobile Communications GmbH
  * Copyright (C) 2016-2017 Intel Deutschland GmbH
  */
@@ -509,6 +509,9 @@ static const struct pci_device_id iwl_hw_card_ids[] = {
 
 /* Sc devices */
 	{IWL_PCI_DEVICE(0xE440, PCI_ANY_ID, iwl_sc_trans_cfg)},
+	{IWL_PCI_DEVICE(0xE340, PCI_ANY_ID, iwl_sc_trans_cfg)},
+	{IWL_PCI_DEVICE(0xD340, PCI_ANY_ID, iwl_sc_trans_cfg)},
+	{IWL_PCI_DEVICE(0x6E70, PCI_ANY_ID, iwl_sc_trans_cfg)},
 #endif /* CONFIG_IWLMVM */
 
 	{0}
@@ -1116,6 +1119,16 @@ static const struct iwl_dev_info iwl_dev_info_table[] = {
 		      IWL_CFG_ANY, IWL_CFG_ANY, IWL_CFG_ANY,
 		      IWL_CFG_ANY, IWL_CFG_ANY, IWL_CFG_ANY,
 		      iwl_cfg_sc, iwl_sc_name),
+	_IWL_DEV_INFO(IWL_CFG_ANY, IWL_CFG_ANY,
+		      IWL_CFG_MAC_TYPE_SC2, IWL_CFG_ANY,
+		      IWL_CFG_ANY, IWL_CFG_ANY, IWL_CFG_ANY,
+		      IWL_CFG_ANY, IWL_CFG_ANY, IWL_CFG_ANY,
+		      iwl_cfg_sc2, iwl_sc2_name),
+	_IWL_DEV_INFO(IWL_CFG_ANY, IWL_CFG_ANY,
+		      IWL_CFG_MAC_TYPE_SC2F, IWL_CFG_ANY,
+		      IWL_CFG_ANY, IWL_CFG_ANY, IWL_CFG_ANY,
+		      IWL_CFG_ANY, IWL_CFG_ANY, IWL_CFG_ANY,
+		      iwl_cfg_sc2f, iwl_sc2f_name),
 #endif /* CONFIG_IWLMVM */
 };
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 23/68] cpuidle: Avoid potential overflow in integer multiplication

[Sasha Levin]

From: C Cheng <C.Cheng@mediatek.com>

[ Upstream commit 88390dd788db485912ee7f9a8d3d56fc5265d52f ]

In detail:

In C language, when you perform a multiplication operation, if
both operands are of int type, the multiplication operation is
performed on the int type, and then the result is converted to
the target type. This means that if the product of int type
multiplication exceeds the range that int type can represent,
an overflow will occur even if you store the result in a
variable of int64_t type.

For a multiplication of two int values, it is better to use
mul_u32_u32() rather than s->exit_latency_ns = s->exit_latency *
NSEC_PER_USEC to avoid potential overflow happenning.

Signed-off-by: C Cheng <C.Cheng@mediatek.com>
Signed-off-by: Bo Ye <bo.ye@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
[ rjw: New subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/cpuidle/driver.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index d9cda7f6ccb98..cf5873cc45dc8 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -16,6 +16,7 @@
 #include <linux/cpumask.h>
 #include <linux/tick.h>
 #include <linux/cpu.h>
+#include <linux/math64.h>
 
 #include "cpuidle.h"
 
@@ -187,7 +188,7 @@ static void __cpuidle_driver_init(struct cpuidle_driver *drv)
 			s->target_residency = div_u64(s->target_residency_ns, NSEC_PER_USEC);
 
 		if (s->exit_latency > 0)
-			s->exit_latency_ns = s->exit_latency * NSEC_PER_USEC;
+			s->exit_latency_ns = mul_u32_u32(s->exit_latency, NSEC_PER_USEC);
 		else if (s->exit_latency_ns < 0)
 			s->exit_latency_ns =  0;
 		else
-- 
2.43.0

[PATCH AUTOSEL 6.8 23/68] cpuidle: Avoid potential overflow in integer multiplication

[Sasha Levin]

From: C Cheng <C.Cheng@mediatek.com>

[ Upstream commit 88390dd788db485912ee7f9a8d3d56fc5265d52f ]

In detail:

In C language, when you perform a multiplication operation, if
both operands are of int type, the multiplication operation is
performed on the int type, and then the result is converted to
the target type. This means that if the product of int type
multiplication exceeds the range that int type can represent,
an overflow will occur even if you store the result in a
variable of int64_t type.

For a multiplication of two int values, it is better to use
mul_u32_u32() rather than s->exit_latency_ns = s->exit_latency *
NSEC_PER_USEC to avoid potential overflow happenning.

Signed-off-by: C Cheng <C.Cheng@mediatek.com>
Signed-off-by: Bo Ye <bo.ye@mediatek.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
[ rjw: New subject ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/cpuidle/driver.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/cpuidle/driver.c b/drivers/cpuidle/driver.c
index d9cda7f6ccb98..cf5873cc45dc8 100644
--- a/drivers/cpuidle/driver.c
+++ b/drivers/cpuidle/driver.c
@@ -16,6 +16,7 @@
 #include <linux/cpumask.h>
 #include <linux/tick.h>
 #include <linux/cpu.h>
+#include <linux/math64.h>
 
 #include "cpuidle.h"
 
@@ -187,7 +188,7 @@ static void __cpuidle_driver_init(struct cpuidle_driver *drv)
 			s->target_residency = div_u64(s->target_residency_ns, NSEC_PER_USEC);
 
 		if (s->exit_latency > 0)
-			s->exit_latency_ns = s->exit_latency * NSEC_PER_USEC;
+			s->exit_latency_ns = mul_u32_u32(s->exit_latency, NSEC_PER_USEC);
 		else if (s->exit_latency_ns < 0)
 			s->exit_latency_ns =  0;
 		else
-- 
2.43.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH AUTOSEL 6.8 24/68] ARM: dts: rockchip: fix rk3288 hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 585e4dc07100a6465b3da8d24e46188064c1c925 ]

Fix rk3288 hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding with some reordering
to align with the (new) documentation about
property ordering.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/cc3a9b4f-076d-4660-b464-615003b6a066@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/rockchip/rk3288.dtsi | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/rockchip/rk3288.dtsi b/arch/arm/boot/dts/rockchip/rk3288.dtsi
index ead343dc3df10..3f1d640afafae 100644
--- a/arch/arm/boot/dts/rockchip/rk3288.dtsi
+++ b/arch/arm/boot/dts/rockchip/rk3288.dtsi
@@ -1240,27 +1240,37 @@ hdmi: hdmi@ff980000 {
 		compatible = "rockchip,rk3288-dw-hdmi";
 		reg = <0x0 0xff980000 0x0 0x20000>;
 		reg-io-width = <4>;
-		#sound-dai-cells = <0>;
-		rockchip,grf = <&grf>;
 		interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru  PCLK_HDMI_CTRL>, <&cru SCLK_HDMI_HDCP>, <&cru SCLK_HDMI_CEC>;
 		clock-names = "iahb", "isfr", "cec";
 		power-domains = <&power RK3288_PD_VIO>;
+		rockchip,grf = <&grf>;
+		#sound-dai-cells = <0>;
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
 				#address-cells = <1>;
 				#size-cells = <0>;
+
 				hdmi_in_vopb: endpoint@0 {
 					reg = <0>;
 					remote-endpoint = <&vopb_out_hdmi>;
 				};
+
 				hdmi_in_vopl: endpoint@1 {
 					reg = <1>;
 					remote-endpoint = <&vopl_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 24/68] ARM: dts: rockchip: fix rk3288 hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 585e4dc07100a6465b3da8d24e46188064c1c925 ]

Fix rk3288 hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding with some reordering
to align with the (new) documentation about
property ordering.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/cc3a9b4f-076d-4660-b464-615003b6a066@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/rockchip/rk3288.dtsi | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/rockchip/rk3288.dtsi b/arch/arm/boot/dts/rockchip/rk3288.dtsi
index ead343dc3df10..3f1d640afafae 100644
--- a/arch/arm/boot/dts/rockchip/rk3288.dtsi
+++ b/arch/arm/boot/dts/rockchip/rk3288.dtsi
@@ -1240,27 +1240,37 @@ hdmi: hdmi@ff980000 {
 		compatible = "rockchip,rk3288-dw-hdmi";
 		reg = <0x0 0xff980000 0x0 0x20000>;
 		reg-io-width = <4>;
-		#sound-dai-cells = <0>;
-		rockchip,grf = <&grf>;
 		interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru  PCLK_HDMI_CTRL>, <&cru SCLK_HDMI_HDCP>, <&cru SCLK_HDMI_CEC>;
 		clock-names = "iahb", "isfr", "cec";
 		power-domains = <&power RK3288_PD_VIO>;
+		rockchip,grf = <&grf>;
+		#sound-dai-cells = <0>;
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
 				#address-cells = <1>;
 				#size-cells = <0>;
+
 				hdmi_in_vopb: endpoint@0 {
 					reg = <0>;
 					remote-endpoint = <&vopb_out_hdmi>;
 				};
+
 				hdmi_in_vopl: endpoint@1 {
 					reg = <1>;
 					remote-endpoint = <&vopl_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0


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[PATCH AUTOSEL 6.8 24/68] ARM: dts: rockchip: fix rk3288 hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 585e4dc07100a6465b3da8d24e46188064c1c925 ]

Fix rk3288 hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding with some reordering
to align with the (new) documentation about
property ordering.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/cc3a9b4f-076d-4660-b464-615003b6a066@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/rockchip/rk3288.dtsi | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/rockchip/rk3288.dtsi b/arch/arm/boot/dts/rockchip/rk3288.dtsi
index ead343dc3df10..3f1d640afafae 100644
--- a/arch/arm/boot/dts/rockchip/rk3288.dtsi
+++ b/arch/arm/boot/dts/rockchip/rk3288.dtsi
@@ -1240,27 +1240,37 @@ hdmi: hdmi@ff980000 {
 		compatible = "rockchip,rk3288-dw-hdmi";
 		reg = <0x0 0xff980000 0x0 0x20000>;
 		reg-io-width = <4>;
-		#sound-dai-cells = <0>;
-		rockchip,grf = <&grf>;
 		interrupts = <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&cru  PCLK_HDMI_CTRL>, <&cru SCLK_HDMI_HDCP>, <&cru SCLK_HDMI_CEC>;
 		clock-names = "iahb", "isfr", "cec";
 		power-domains = <&power RK3288_PD_VIO>;
+		rockchip,grf = <&grf>;
+		#sound-dai-cells = <0>;
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
 				#address-cells = <1>;
 				#size-cells = <0>;
+
 				hdmi_in_vopb: endpoint@0 {
 					reg = <0>;
 					remote-endpoint = <&vopb_out_hdmi>;
 				};
+
 				hdmi_in_vopl: endpoint@1 {
 					reg = <1>;
 					remote-endpoint = <&vopl_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0


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[PATCH AUTOSEL 6.8 25/68] ARM: dts: rockchip: fix rk322x hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 15a5ed03000cf61daf87d14628085cb1bc8ae72c ]

Fix rk322x hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/9b84adf0-9312-47fd-becc-cadd06941f70@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/rockchip/rk322x.dtsi | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/rockchip/rk322x.dtsi b/arch/arm/boot/dts/rockchip/rk322x.dtsi
index 831561fc18146..96421355c2746 100644
--- a/arch/arm/boot/dts/rockchip/rk322x.dtsi
+++ b/arch/arm/boot/dts/rockchip/rk322x.dtsi
@@ -736,14 +736,20 @@ hdmi: hdmi@200a0000 {
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
-				#address-cells = <1>;
-				#size-cells = <0>;
-				hdmi_in_vop: endpoint@0 {
-					reg = <0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
+
+				hdmi_in_vop: endpoint {
 					remote-endpoint = <&vop_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 25/68] ARM: dts: rockchip: fix rk322x hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 15a5ed03000cf61daf87d14628085cb1bc8ae72c ]

Fix rk322x hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/9b84adf0-9312-47fd-becc-cadd06941f70@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/rockchip/rk322x.dtsi | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/rockchip/rk322x.dtsi b/arch/arm/boot/dts/rockchip/rk322x.dtsi
index 831561fc18146..96421355c2746 100644
--- a/arch/arm/boot/dts/rockchip/rk322x.dtsi
+++ b/arch/arm/boot/dts/rockchip/rk322x.dtsi
@@ -736,14 +736,20 @@ hdmi: hdmi@200a0000 {
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
-				#address-cells = <1>;
-				#size-cells = <0>;
-				hdmi_in_vop: endpoint@0 {
-					reg = <0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
+
+				hdmi_in_vop: endpoint {
 					remote-endpoint = <&vop_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0


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[PATCH AUTOSEL 6.8 25/68] ARM: dts: rockchip: fix rk322x hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 15a5ed03000cf61daf87d14628085cb1bc8ae72c ]

Fix rk322x hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/9b84adf0-9312-47fd-becc-cadd06941f70@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm/boot/dts/rockchip/rk322x.dtsi | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

diff --git a/arch/arm/boot/dts/rockchip/rk322x.dtsi b/arch/arm/boot/dts/rockchip/rk322x.dtsi
index 831561fc18146..96421355c2746 100644
--- a/arch/arm/boot/dts/rockchip/rk322x.dtsi
+++ b/arch/arm/boot/dts/rockchip/rk322x.dtsi
@@ -736,14 +736,20 @@ hdmi: hdmi@200a0000 {
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
-				#address-cells = <1>;
-				#size-cells = <0>;
-				hdmi_in_vop: endpoint@0 {
-					reg = <0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
+
+				hdmi_in_vop: endpoint {
 					remote-endpoint = <&vop_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0


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[PATCH AUTOSEL 6.8 26/68] arm64: dts: rockchip: fix rk3328 hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 1d00ba4700d1e0f88ae70d028d2e17e39078fa1c ]

Fix rk3328 hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/e5dea3b7-bf84-4474-9530-cc2da3c41104@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3328.dtsi | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
index 7b4c15c4a9c31..b6f045069ee2f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -744,11 +744,20 @@ hdmi: hdmi@ff3c0000 {
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
+
 				hdmi_in_vop: endpoint {
 					remote-endpoint = <&vop_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 26/68] arm64: dts: rockchip: fix rk3328 hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 1d00ba4700d1e0f88ae70d028d2e17e39078fa1c ]

Fix rk3328 hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/e5dea3b7-bf84-4474-9530-cc2da3c41104@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3328.dtsi | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
index 7b4c15c4a9c31..b6f045069ee2f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -744,11 +744,20 @@ hdmi: hdmi@ff3c0000 {
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
+
 				hdmi_in_vop: endpoint {
 					remote-endpoint = <&vop_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0


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[PATCH AUTOSEL 6.8 26/68] arm64: dts: rockchip: fix rk3328 hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit 1d00ba4700d1e0f88ae70d028d2e17e39078fa1c ]

Fix rk3328 hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/e5dea3b7-bf84-4474-9530-cc2da3c41104@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3328.dtsi | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3328.dtsi b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
index 7b4c15c4a9c31..b6f045069ee2f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3328.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3328.dtsi
@@ -744,11 +744,20 @@ hdmi: hdmi@ff3c0000 {
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
+
 				hdmi_in_vop: endpoint {
 					remote-endpoint = <&vop_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0


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[PATCH AUTOSEL 6.8 27/68] arm64: dts: rockchip: fix rk3399 hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit f051b6ace7ffcc48d6d1017191f167c0a85799f6 ]

Fix rk3399 hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/a6ab6f75-3b80-40b1-bd30-3113e14becdd@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 6e12c5a920cab..fe818a2700aa7 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -1956,6 +1956,7 @@ simple-audio-card,codec {
 	hdmi: hdmi@ff940000 {
 		compatible = "rockchip,rk3399-dw-hdmi";
 		reg = <0x0 0xff940000 0x0 0x20000>;
+		reg-io-width = <4>;
 		interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH 0>;
 		clocks = <&cru PCLK_HDMI_CTRL>,
 			 <&cru SCLK_HDMI_SFR>,
@@ -1964,13 +1965,16 @@ hdmi: hdmi@ff940000 {
 			 <&cru PLL_VPLL>;
 		clock-names = "iahb", "isfr", "cec", "grf", "ref";
 		power-domains = <&power RK3399_PD_HDCP>;
-		reg-io-width = <4>;
 		rockchip,grf = <&grf>;
 		#sound-dai-cells = <0>;
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
 				#address-cells = <1>;
 				#size-cells = <0>;
 
@@ -1983,6 +1987,10 @@ hdmi_in_vopl: endpoint@1 {
 					remote-endpoint = <&vopl_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 27/68] arm64: dts: rockchip: fix rk3399 hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit f051b6ace7ffcc48d6d1017191f167c0a85799f6 ]

Fix rk3399 hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/a6ab6f75-3b80-40b1-bd30-3113e14becdd@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 6e12c5a920cab..fe818a2700aa7 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -1956,6 +1956,7 @@ simple-audio-card,codec {
 	hdmi: hdmi@ff940000 {
 		compatible = "rockchip,rk3399-dw-hdmi";
 		reg = <0x0 0xff940000 0x0 0x20000>;
+		reg-io-width = <4>;
 		interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH 0>;
 		clocks = <&cru PCLK_HDMI_CTRL>,
 			 <&cru SCLK_HDMI_SFR>,
@@ -1964,13 +1965,16 @@ hdmi: hdmi@ff940000 {
 			 <&cru PLL_VPLL>;
 		clock-names = "iahb", "isfr", "cec", "grf", "ref";
 		power-domains = <&power RK3399_PD_HDCP>;
-		reg-io-width = <4>;
 		rockchip,grf = <&grf>;
 		#sound-dai-cells = <0>;
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
 				#address-cells = <1>;
 				#size-cells = <0>;
 
@@ -1983,6 +1987,10 @@ hdmi_in_vopl: endpoint@1 {
 					remote-endpoint = <&vopl_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0


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[PATCH AUTOSEL 6.8 27/68] arm64: dts: rockchip: fix rk3399 hdmi ports node

[Sasha Levin]

From: Johan Jonker <jbx6244@gmail.com>

[ Upstream commit f051b6ace7ffcc48d6d1017191f167c0a85799f6 ]

Fix rk3399 hdmi ports node so that it matches the
rockchip,dw-hdmi.yaml binding.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
Link: https://lore.kernel.org/r/a6ab6f75-3b80-40b1-bd30-3113e14becdd@gmail.com
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/rockchip/rk3399.dtsi | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399.dtsi b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
index 6e12c5a920cab..fe818a2700aa7 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399.dtsi
@@ -1956,6 +1956,7 @@ simple-audio-card,codec {
 	hdmi: hdmi@ff940000 {
 		compatible = "rockchip,rk3399-dw-hdmi";
 		reg = <0x0 0xff940000 0x0 0x20000>;
+		reg-io-width = <4>;
 		interrupts = <GIC_SPI 23 IRQ_TYPE_LEVEL_HIGH 0>;
 		clocks = <&cru PCLK_HDMI_CTRL>,
 			 <&cru SCLK_HDMI_SFR>,
@@ -1964,13 +1965,16 @@ hdmi: hdmi@ff940000 {
 			 <&cru PLL_VPLL>;
 		clock-names = "iahb", "isfr", "cec", "grf", "ref";
 		power-domains = <&power RK3399_PD_HDCP>;
-		reg-io-width = <4>;
 		rockchip,grf = <&grf>;
 		#sound-dai-cells = <0>;
 		status = "disabled";
 
 		ports {
-			hdmi_in: port {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			hdmi_in: port@0 {
+				reg = <0>;
 				#address-cells = <1>;
 				#size-cells = <0>;
 
@@ -1983,6 +1987,10 @@ hdmi_in_vopl: endpoint@1 {
 					remote-endpoint = <&vopl_out_hdmi>;
 				};
 			};
+
+			hdmi_out: port@1 {
+				reg = <1>;
+			};
 		};
 	};
 
-- 
2.43.0


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[PATCH AUTOSEL 6.8 28/68] net: add netdev_lockdep_set_classes() to virtual drivers

[Sasha Levin]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 0bef512012b1cd8820f0c9ec80e5f8ceb43fdd59 ]

Based on a syzbot report, it appears many virtual
drivers do not yet use netdev_lockdep_set_classes(),
triggerring lockdep false positives.

WARNING: possible recursive locking detected
6.8.0-rc4-next-20240212-syzkaller #0 Not tainted

syz-executor.0/19016 is trying to acquire lock:
 ffff8880162cb298 (_xmit_ETHER#2){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 ffff8880162cb298 (_xmit_ETHER#2){+.-.}-{2:2}, at: __netif_tx_lock include/linux/netdevice.h:4452 [inline]
 ffff8880162cb298 (_xmit_ETHER#2){+.-.}-{2:2}, at: sch_direct_xmit+0x1c4/0x5f0 net/sched/sch_generic.c:340

but task is already holding lock:
 ffff8880223db4d8 (_xmit_ETHER#2){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
 ffff8880223db4d8 (_xmit_ETHER#2){+.-.}-{2:2}, at: __netif_tx_lock include/linux/netdevice.h:4452 [inline]
 ffff8880223db4d8 (_xmit_ETHER#2){+.-.}-{2:2}, at: sch_direct_xmit+0x1c4/0x5f0 net/sched/sch_generic.c:340

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
  lock(_xmit_ETHER#2);
  lock(_xmit_ETHER#2);

 *** DEADLOCK ***

 May be due to missing lock nesting notation

9 locks held by syz-executor.0/19016:
  #0: ffffffff8f385208 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
  #0: ffffffff8f385208 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x82c/0x1040 net/core/rtnetlink.c:6603
  #1: ffffc90000a08c00 ((&in_dev->mr_ifc_timer)){+.-.}-{0:0}, at: call_timer_fn+0xc0/0x600 kernel/time/timer.c:1697
  #2: ffffffff8e131520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
  #2: ffffffff8e131520 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
  #2: ffffffff8e131520 (rcu_read_lock){....}-{1:2}, at: ip_finish_output2+0x45f/0x1360 net/ipv4/ip_output.c:228
  #3: ffffffff8e131580 (rcu_read_lock_bh){....}-{1:2}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
  #3: ffffffff8e131580 (rcu_read_lock_bh){....}-{1:2}, at: rcu_read_lock_bh include/linux/rcupdate.h:802 [inline]
  #3: ffffffff8e131580 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x2c4/0x3b10 net/core/dev.c:4284
  #4: ffff8880416e3258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: spin_trylock include/linux/spinlock.h:361 [inline]
  #4: ffff8880416e3258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: qdisc_run_begin include/net/sch_generic.h:195 [inline]
  #4: ffff8880416e3258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: __dev_xmit_skb net/core/dev.c:3771 [inline]
  #4: ffff8880416e3258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: __dev_queue_xmit+0x1262/0x3b10 net/core/dev.c:4325
  #5: ffff8880223db4d8 (_xmit_ETHER#2){+.-.}-{2:2}, at: spin_lock include/linux/spinlock.h:351 [inline]
  #5: ffff8880223db4d8 (_xmit_ETHER#2){+.-.}-{2:2}, at: __netif_tx_lock include/linux/netdevice.h:4452 [inline]
  #5: ffff8880223db4d8 (_xmit_ETHER#2){+.-.}-{2:2}, at: sch_direct_xmit+0x1c4/0x5f0 net/sched/sch_generic.c:340
  #6: ffffffff8e131520 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline]
  #6: ffffffff8e131520 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline]
  #6: ffffffff8e131520 (rcu_read_lock){....}-{1:2}, at: ip_finish_output2+0x45f/0x1360 net/ipv4/ip_output.c:228
  #7: ffffffff8e131580 (rcu_read_lock_bh){....}-{1:2}, at: local_bh_disable include/linux/bottom_half.h:20 [inline]
  #7: ffffffff8e131580 (rcu_read_lock_bh){....}-{1:2}, at: rcu_read_lock_bh include/linux/rcupdate.h:802 [inline]
  #7: ffffffff8e131580 (rcu_read_lock_bh){....}-{1:2}, at: __dev_queue_xmit+0x2c4/0x3b10 net/core/dev.c:4284
  #8: ffff888014d9d258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: spin_trylock include/linux/spinlock.h:361 [inline]
  #8: ffff888014d9d258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: qdisc_run_begin include/net/sch_generic.h:195 [inline]
  #8: ffff888014d9d258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: __dev_xmit_skb net/core/dev.c:3771 [inline]
  #8: ffff888014d9d258 (dev->qdisc_tx_busylock ?: &qdisc_tx_busylock){+...}-{2:2}, at: __dev_queue_xmit+0x1262/0x3b10 net/core/dev.c:4325

stack backtrace:
CPU: 1 PID: 19016 Comm: syz-executor.0 Not tainted 6.8.0-rc4-next-20240212-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024
Call Trace:
 <IRQ>
  __dump_stack lib/dump_stack.c:88 [inline]
  dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
  check_deadlock kernel/locking/lockdep.c:3062 [inline]
  validate_chain+0x15c1/0x58e0 kernel/locking/lockdep.c:3856
  __lock_acquire+0x1346/0x1fd0 kernel/locking/lockdep.c:5137
  lock_acquire+0x1e4/0x530 kernel/locking/lockdep.c:5754
  __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
  _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
  spin_lock include/linux/spinlock.h:351 [inline]
  __netif_tx_lock include/linux/netdevice.h:4452 [inline]
  sch_direct_xmit+0x1c4/0x5f0 net/sched/sch_generic.c:340
  __dev_xmit_skb net/core/dev.c:3784 [inline]
  __dev_queue_xmit+0x1912/0x3b10 net/core/dev.c:4325
  neigh_output include/net/neighbour.h:542 [inline]
  ip_finish_output2+0xe66/0x1360 net/ipv4/ip_output.c:235
  iptunnel_xmit+0x540/0x9b0 net/ipv4/ip_tunnel_core.c:82
  ip_tunnel_xmit+0x20ee/0x2960 net/ipv4/ip_tunnel.c:831
  erspan_xmit+0x9de/0x1460 net/ipv4/ip_gre.c:720
  __netdev_start_xmit include/linux/netdevice.h:4989 [inline]
  netdev_start_xmit include/linux/netdevice.h:5003 [inline]
  xmit_one net/core/dev.c:3555 [inline]
  dev_hard_start_xmit+0x242/0x770 net/core/dev.c:3571
  sch_direct_xmit+0x2b6/0x5f0 net/sched/sch_generic.c:342
  __dev_xmit_skb net/core/dev.c:3784 [inline]
  __dev_queue_xmit+0x1912/0x3b10 net/core/dev.c:4325
  neigh_output include/net/neighbour.h:542 [inline]
  ip_finish_output2+0xe66/0x1360 net/ipv4/ip_output.c:235
  igmpv3_send_cr net/ipv4/igmp.c:723 [inline]
  igmp_ifc_timer_expire+0xb71/0xd90 net/ipv4/igmp.c:813
  call_timer_fn+0x17e/0x600 kernel/time/timer.c:1700
  expire_timers kernel/time/timer.c:1751 [inline]
  __run_timers+0x621/0x830 kernel/time/timer.c:2038
  run_timer_softirq+0x67/0xf0 kernel/time/timer.c:2051
  __do_softirq+0x2bc/0x943 kernel/softirq.c:554
  invoke_softirq kernel/softirq.c:428 [inline]
  __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
  irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
  instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1076 [inline]
  sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1076
 </IRQ>
 <TASK>
  asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
 RIP: 0010:resched_offsets_ok kernel/sched/core.c:10127 [inline]
 RIP: 0010:__might_resched+0x16f/0x780 kernel/sched/core.c:10142
Code: 00 4c 89 e8 48 c1 e8 03 48 ba 00 00 00 00 00 fc ff df 48 89 44 24 38 0f b6 04 10 84 c0 0f 85 87 04 00 00 41 8b 45 00 c1 e0 08 <01> d8 44 39 e0 0f 85 d6 00 00 00 44 89 64 24 1c 48 8d bc 24 a0 00
RSP: 0018:ffffc9000ee069e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff8880296a9e00
RDX: dffffc0000000000 RSI: ffff8880296a9e00 RDI: ffffffff8bfe8fa0
RBP: ffffc9000ee06b00 R08: ffffffff82326877 R09: 1ffff11002b5ad1b
R10: dffffc0000000000 R11: ffffed1002b5ad1c R12: 0000000000000000
R13: ffff8880296aa23c R14: 000000000000062a R15: 1ffff92001dc0d44
  down_write+0x19/0x50 kernel/locking/rwsem.c:1578
  kernfs_activate fs/kernfs/dir.c:1403 [inline]
  kernfs_add_one+0x4af/0x8b0 fs/kernfs/dir.c:819
  __kernfs_create_file+0x22e/0x2e0 fs/kernfs/file.c:1056
  sysfs_add_file_mode_ns+0x24a/0x310 fs/sysfs/file.c:307
  create_files fs/sysfs/group.c:64 [inline]
  internal_create_group+0x4f4/0xf20 fs/sysfs/group.c:152
  internal_create_groups fs/sysfs/group.c:192 [inline]
  sysfs_create_groups+0x56/0x120 fs/sysfs/group.c:218
  create_dir lib/kobject.c:78 [inline]
  kobject_add_internal+0x472/0x8d0 lib/kobject.c:240
  kobject_add_varg lib/kobject.c:374 [inline]
  kobject_init_and_add+0x124/0x190 lib/kobject.c:457
  netdev_queue_add_kobject net/core/net-sysfs.c:1706 [inline]
  netdev_queue_update_kobjects+0x1f3/0x480 net/core/net-sysfs.c:1758
  register_queue_kobjects net/core/net-sysfs.c:1819 [inline]
  netdev_register_kobject+0x265/0x310 net/core/net-sysfs.c:2059
  register_netdevice+0x1191/0x19c0 net/core/dev.c:10298
  bond_newlink+0x3b/0x90 drivers/net/bonding/bond_netlink.c:576
  rtnl_newlink_create net/core/rtnetlink.c:3506 [inline]
  __rtnl_newlink net/core/rtnetlink.c:3726 [inline]
  rtnl_newlink+0x158f/0x20a0 net/core/rtnetlink.c:3739
  rtnetlink_rcv_msg+0x885/0x1040 net/core/rtnetlink.c:6606
  netlink_rcv_skb+0x1e3/0x430 net/netlink/af_netlink.c:2543
  netlink_unicast_kernel net/netlink/af_netlink.c:1341 [inline]
  netlink_unicast+0x7ea/0x980 net/netlink/af_netlink.c:1367
  netlink_sendmsg+0xa3c/0xd70 net/netlink/af_netlink.c:1908
  sock_sendmsg_nosec net/socket.c:730 [inline]
  __sock_sendmsg+0x221/0x270 net/socket.c:745
  __sys_sendto+0x3a4/0x4f0 net/socket.c:2191
  __do_sys_sendto net/socket.c:2203 [inline]
  __se_sys_sendto net/socket.c:2199 [inline]
  __x64_sys_sendto+0xde/0x100 net/socket.c:2199
 do_syscall_64+0xfb/0x240
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7fc3fa87fa9c

Reported-by: syzbot <syzkaller@googlegroups.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Link: https://lore.kernel.org/r/20240212140700.2795436-4-edumazet@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/dummy.c            | 1 +
 drivers/net/geneve.c           | 1 +
 drivers/net/loopback.c         | 1 +
 drivers/net/veth.c             | 1 +
 drivers/net/vxlan/vxlan_core.c | 1 +
 net/ipv4/ip_tunnel.c           | 1 +
 net/ipv6/ip6_gre.c             | 2 ++
 net/ipv6/ip6_tunnel.c          | 1 +
 net/ipv6/ip6_vti.c             | 1 +
 net/ipv6/sit.c                 | 1 +
 10 files changed, 11 insertions(+)

diff --git a/drivers/net/dummy.c b/drivers/net/dummy.c
index 768454aa36d6c..946bba0701a4f 100644
--- a/drivers/net/dummy.c
+++ b/drivers/net/dummy.c
@@ -71,6 +71,7 @@ static int dummy_dev_init(struct net_device *dev)
 	if (!dev->lstats)
 		return -ENOMEM;
 
+	netdev_lockdep_set_classes(dev);
 	return 0;
 }
 
diff --git a/drivers/net/geneve.c b/drivers/net/geneve.c
index c4ed36c718974..097a8db0d1d99 100644
--- a/drivers/net/geneve.c
+++ b/drivers/net/geneve.c
@@ -349,6 +349,7 @@ static int geneve_init(struct net_device *dev)
 		gro_cells_destroy(&geneve->gro_cells);
 		return err;
 	}
+	netdev_lockdep_set_classes(dev);
 	return 0;
 }
 
diff --git a/drivers/net/loopback.c b/drivers/net/loopback.c
index f6d53e63ef4ec..f6eab66c26608 100644
--- a/drivers/net/loopback.c
+++ b/drivers/net/loopback.c
@@ -144,6 +144,7 @@ static int loopback_dev_init(struct net_device *dev)
 	dev->lstats = netdev_alloc_pcpu_stats(struct pcpu_lstats);
 	if (!dev->lstats)
 		return -ENOMEM;
+	netdev_lockdep_set_classes(dev);
 	return 0;
 }
 
diff --git a/drivers/net/veth.c b/drivers/net/veth.c
index cd4a6fe458f95..1ff3f93d4e037 100644
--- a/drivers/net/veth.c
+++ b/drivers/net/veth.c
@@ -1483,6 +1483,7 @@ static void veth_free_queues(struct net_device *dev)
 
 static int veth_dev_init(struct net_device *dev)
 {
+	netdev_lockdep_set_classes(dev);
 	return veth_alloc_queues(dev);
 }
 
diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index 16106e088c630..0bedb804824ba 100644
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -2855,6 +2855,7 @@ static int vxlan_init(struct net_device *dev)
 	if (err)
 		goto err_gro_cells_destroy;
 
+	netdev_lockdep_set_classes(dev);
 	return 0;
 
 err_gro_cells_destroy:
diff --git a/net/ipv4/ip_tunnel.c b/net/ipv4/ip_tunnel.c
index 1b6981de3f295..e92093cc0e8af 100644
--- a/net/ipv4/ip_tunnel.c
+++ b/net/ipv4/ip_tunnel.c
@@ -1285,6 +1285,7 @@ int ip_tunnel_init(struct net_device *dev)
 
 	if (tunnel->collect_md)
 		netif_keep_dst(dev);
+	netdev_lockdep_set_classes(dev);
 	return 0;
 }
 EXPORT_SYMBOL_GPL(ip_tunnel_init);
diff --git a/net/ipv6/ip6_gre.c b/net/ipv6/ip6_gre.c
index 070d87abf7c02..447d244c01b15 100644
--- a/net/ipv6/ip6_gre.c
+++ b/net/ipv6/ip6_gre.c
@@ -1511,6 +1511,7 @@ static int ip6gre_tunnel_init_common(struct net_device *dev)
 	ip6gre_tnl_init_features(dev);
 
 	netdev_hold(dev, &tunnel->dev_tracker, GFP_KERNEL);
+	netdev_lockdep_set_classes(dev);
 	return 0;
 
 cleanup_dst_cache_init:
@@ -1903,6 +1904,7 @@ static int ip6erspan_tap_init(struct net_device *dev)
 	ip6erspan_tnl_link_config(tunnel, 1);
 
 	netdev_hold(dev, &tunnel->dev_tracker, GFP_KERNEL);
+	netdev_lockdep_set_classes(dev);
 	return 0;
 
 cleanup_dst_cache_init:
diff --git a/net/ipv6/ip6_tunnel.c b/net/ipv6/ip6_tunnel.c
index 9bbabf750a21e..70478027a7af7 100644
--- a/net/ipv6/ip6_tunnel.c
+++ b/net/ipv6/ip6_tunnel.c
@@ -1898,6 +1898,7 @@ ip6_tnl_dev_init_gen(struct net_device *dev)
 	dev->max_mtu = IP6_MAX_MTU - dev->hard_header_len;
 
 	netdev_hold(dev, &t->dev_tracker, GFP_KERNEL);
+	netdev_lockdep_set_classes(dev);
 	return 0;
 
 destroy_dst:
diff --git a/net/ipv6/ip6_vti.c b/net/ipv6/ip6_vti.c
index e550240c85e1c..1163ca6ea4af1 100644
--- a/net/ipv6/ip6_vti.c
+++ b/net/ipv6/ip6_vti.c
@@ -935,6 +935,7 @@ static inline int vti6_dev_init_gen(struct net_device *dev)
 	if (!dev->tstats)
 		return -ENOMEM;
 	netdev_hold(dev, &t->dev_tracker, GFP_KERNEL);
+	netdev_lockdep_set_classes(dev);
 	return 0;
 }
 
diff --git a/net/ipv6/sit.c b/net/ipv6/sit.c
index 5e9f625b76e36..fbad6e1c970e4 100644
--- a/net/ipv6/sit.c
+++ b/net/ipv6/sit.c
@@ -1460,6 +1460,7 @@ static int ipip6_tunnel_init(struct net_device *dev)
 		return err;
 	}
 	netdev_hold(dev, &tunnel->dev_tracker, GFP_KERNEL);
+	netdev_lockdep_set_classes(dev);
 	return 0;
 }
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 29/68] arm64: dts: qcom: qcs6490-rb3gen2: Declare GCC clocks protected

[Sasha Levin]

From: Bjorn Andersson <quic_bjorande@quicinc.com>

[ Upstream commit 7c6bef576a8891abce08d448165b53328032aa5f ]

The SC7280 GCC binding describes clocks which, due to the difference in
security model, are not accessible on the RB3gen2 - in the same way seen
on QCM6490.

Mark these clocks as protected, to allow the board to boot. In contrast
to the present QCM6490 boards GCC_EDP_CLKREF_EN is left out, as this
does not need to be "protected" and is used on the RB3Gen2 board.

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>
Reviewed-by: Luca Weiss <luca.weiss@fairphone.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Signed-off-by: Bjorn Andersson <quic_bjorande@quicinc.com>
Link: https://lore.kernel.org/r/20240209-qcm6490-gcc-protected-clocks-v2-1-11cd5fc13bd0@quicinc.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
index 8bb7d13d85f66..ebbe2c1123f6e 100644
--- a/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
+++ b/arch/arm64/boot/dts/qcom/qcs6490-rb3gen2.dts
@@ -413,6 +413,23 @@ vreg_bob_3p296: bob {
 	};
 };
 
+&gcc {
+	protected-clocks = <GCC_CFG_NOC_LPASS_CLK>,
+			   <GCC_MSS_CFG_AHB_CLK>,
+			   <GCC_MSS_GPLL0_MAIN_DIV_CLK_SRC>,
+			   <GCC_MSS_OFFLINE_AXI_CLK>,
+			   <GCC_MSS_Q6SS_BOOT_CLK_SRC>,
+			   <GCC_MSS_Q6_MEMNOC_AXI_CLK>,
+			   <GCC_MSS_SNOC_AXI_CLK>,
+			   <GCC_QSPI_CNOC_PERIPH_AHB_CLK>,
+			   <GCC_QSPI_CORE_CLK>,
+			   <GCC_QSPI_CORE_CLK_SRC>,
+			   <GCC_SEC_CTRL_CLK_SRC>,
+			   <GCC_WPSS_AHB_BDG_MST_CLK>,
+			   <GCC_WPSS_AHB_CLK>,
+			   <GCC_WPSS_RSCP_CLK>;
+};
+
 &qupv3_id_0 {
 	status = "okay";
 };
-- 
2.43.0

[PATCH AUTOSEL 6.8 30/68] pmdomain: ti: Add a null pointer check to the omap_prm_domain_init

[Sasha Levin]

From: Kunwu Chan <chentao@kylinos.cn>

[ Upstream commit 5d7f58ee08434a33340f75ac7ac5071eea9673b3 ]

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Link: https://lore.kernel.org/r/20240118054257.200814-1-chentao@kylinos.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pmdomain/ti/omap_prm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pmdomain/ti/omap_prm.c b/drivers/pmdomain/ti/omap_prm.c
index c2feae3a634ca..b8ceb3c2b81c2 100644
--- a/drivers/pmdomain/ti/omap_prm.c
+++ b/drivers/pmdomain/ti/omap_prm.c
@@ -695,6 +695,8 @@ static int omap_prm_domain_init(struct device *dev, struct omap_prm *prm)
 	data = prm->data;
 	name = devm_kasprintf(dev, GFP_KERNEL, "prm_%s",
 			      data->name);
+	if (!name)
+		return -ENOMEM;
 
 	prmd->dev = dev;
 	prmd->prm = prm;
-- 
2.43.0

[PATCH AUTOSEL 6.8 30/68] pmdomain: ti: Add a null pointer check to the omap_prm_domain_init

[Sasha Levin]

From: Kunwu Chan <chentao@kylinos.cn>

[ Upstream commit 5d7f58ee08434a33340f75ac7ac5071eea9673b3 ]

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Link: https://lore.kernel.org/r/20240118054257.200814-1-chentao@kylinos.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pmdomain/ti/omap_prm.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/pmdomain/ti/omap_prm.c b/drivers/pmdomain/ti/omap_prm.c
index c2feae3a634ca..b8ceb3c2b81c2 100644
--- a/drivers/pmdomain/ti/omap_prm.c
+++ b/drivers/pmdomain/ti/omap_prm.c
@@ -695,6 +695,8 @@ static int omap_prm_domain_init(struct device *dev, struct omap_prm *prm)
 	data = prm->data;
 	name = devm_kasprintf(dev, GFP_KERNEL, "prm_%s",
 			      data->name);
+	if (!name)
+		return -ENOMEM;
 
 	prmd->dev = dev;
 	prmd->prm = prm;
-- 
2.43.0


_______________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH AUTOSEL 6.8 31/68] pmdomain: imx8mp-blk-ctrl: imx8mp_blk: Add fdcc clock to hdmimix domain

[Sasha Levin]

From: Adam Ford <aford173@gmail.com>

[ Upstream commit 697624ee8ad557ab5417f985d2c804241a7ad30d ]

According to i.MX8MP RM and HDMI ADD, the fdcc clock is part of
hdmi rx verification IP that should not enable for HDMI TX.
But actually if the clock is disabled before HDMI/LCDIF probe,
LCDIF will not get pixel clock from HDMI PHY and print the error
logs:

[CRTC:39:crtc-2] vblank wait timed out
WARNING: CPU: 2 PID: 9 at drivers/gpu/drm/drm_atomic_helper.c:1634 drm_atomic_helper_wait_for_vblanks.part.0+0x23c/0x260

Add fdcc clock to LCDIF and HDMI TX power domains to fix the issue.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
Link: https://lore.kernel.org/r/20240203165307.7806-5-aford173@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pmdomain/imx/imx8mp-blk-ctrl.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/pmdomain/imx/imx8mp-blk-ctrl.c b/drivers/pmdomain/imx/imx8mp-blk-ctrl.c
index e3203eb6a0229..a56f7f92d0915 100644
--- a/drivers/pmdomain/imx/imx8mp-blk-ctrl.c
+++ b/drivers/pmdomain/imx/imx8mp-blk-ctrl.c
@@ -55,7 +55,7 @@ struct imx8mp_blk_ctrl_domain_data {
 	const char *gpc_name;
 };
 
-#define DOMAIN_MAX_CLKS 2
+#define DOMAIN_MAX_CLKS 3
 #define DOMAIN_MAX_PATHS 3
 
 struct imx8mp_blk_ctrl_domain {
@@ -457,8 +457,8 @@ static const struct imx8mp_blk_ctrl_domain_data imx8mp_hdmi_domain_data[] = {
 	},
 	[IMX8MP_HDMIBLK_PD_LCDIF] = {
 		.name = "hdmiblk-lcdif",
-		.clk_names = (const char *[]){ "axi", "apb" },
-		.num_clks = 2,
+		.clk_names = (const char *[]){ "axi", "apb", "fdcc" },
+		.num_clks = 3,
 		.gpc_name = "lcdif",
 		.path_names = (const char *[]){"lcdif-hdmi"},
 		.num_paths = 1,
@@ -483,8 +483,8 @@ static const struct imx8mp_blk_ctrl_domain_data imx8mp_hdmi_domain_data[] = {
 	},
 	[IMX8MP_HDMIBLK_PD_HDMI_TX] = {
 		.name = "hdmiblk-hdmi-tx",
-		.clk_names = (const char *[]){ "apb", "ref_266m" },
-		.num_clks = 2,
+		.clk_names = (const char *[]){ "apb", "ref_266m", "fdcc" },
+		.num_clks = 3,
 		.gpc_name = "hdmi-tx",
 	},
 	[IMX8MP_HDMIBLK_PD_HDMI_TX_PHY] = {
-- 
2.43.0

[PATCH AUTOSEL 6.8 31/68] pmdomain: imx8mp-blk-ctrl: imx8mp_blk: Add fdcc clock to hdmimix domain

[Sasha Levin]

From: Adam Ford <aford173@gmail.com>

[ Upstream commit 697624ee8ad557ab5417f985d2c804241a7ad30d ]

According to i.MX8MP RM and HDMI ADD, the fdcc clock is part of
hdmi rx verification IP that should not enable for HDMI TX.
But actually if the clock is disabled before HDMI/LCDIF probe,
LCDIF will not get pixel clock from HDMI PHY and print the error
logs:

[CRTC:39:crtc-2] vblank wait timed out
WARNING: CPU: 2 PID: 9 at drivers/gpu/drm/drm_atomic_helper.c:1634 drm_atomic_helper_wait_for_vblanks.part.0+0x23c/0x260

Add fdcc clock to LCDIF and HDMI TX power domains to fix the issue.

Signed-off-by: Adam Ford <aford173@gmail.com>
Reviewed-by: Jacky Bai <ping.bai@nxp.com>
Signed-off-by: Sandor Yu <Sandor.yu@nxp.com>
Link: https://lore.kernel.org/r/20240203165307.7806-5-aford173@gmail.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/pmdomain/imx/imx8mp-blk-ctrl.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/pmdomain/imx/imx8mp-blk-ctrl.c b/drivers/pmdomain/imx/imx8mp-blk-ctrl.c
index e3203eb6a0229..a56f7f92d0915 100644
--- a/drivers/pmdomain/imx/imx8mp-blk-ctrl.c
+++ b/drivers/pmdomain/imx/imx8mp-blk-ctrl.c
@@ -55,7 +55,7 @@ struct imx8mp_blk_ctrl_domain_data {
 	const char *gpc_name;
 };
 
-#define DOMAIN_MAX_CLKS 2
+#define DOMAIN_MAX_CLKS 3
 #define DOMAIN_MAX_PATHS 3
 
 struct imx8mp_blk_ctrl_domain {
@@ -457,8 +457,8 @@ static const struct imx8mp_blk_ctrl_domain_data imx8mp_hdmi_domain_data[] = {
 	},
 	[IMX8MP_HDMIBLK_PD_LCDIF] = {
 		.name = "hdmiblk-lcdif",
-		.clk_names = (const char *[]){ "axi", "apb" },
-		.num_clks = 2,
+		.clk_names = (const char *[]){ "axi", "apb", "fdcc" },
+		.num_clks = 3,
 		.gpc_name = "lcdif",
 		.path_names = (const char *[]){"lcdif-hdmi"},
 		.num_paths = 1,
@@ -483,8 +483,8 @@ static const struct imx8mp_blk_ctrl_domain_data imx8mp_hdmi_domain_data[] = {
 	},
 	[IMX8MP_HDMIBLK_PD_HDMI_TX] = {
 		.name = "hdmiblk-hdmi-tx",
-		.clk_names = (const char *[]){ "apb", "ref_266m" },
-		.num_clks = 2,
+		.clk_names = (const char *[]){ "apb", "ref_266m", "fdcc" },
+		.num_clks = 3,
 		.gpc_name = "hdmi-tx",
 	},
 	[IMX8MP_HDMIBLK_PD_HDMI_TX_PHY] = {
-- 
2.43.0


_______________________________________________
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http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH AUTOSEL 6.8 32/68] arm64: dts: sc8280xp: correct DMIC2 and DMIC3 pin config node names

[Sasha Levin]

From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

[ Upstream commit 61474b18e762671a69b2df9665f3cec5c87a38af ]

Correct the TLMM pin configuration and muxing node names used for DMIC2
and DMIC3 (dmic01 -> dmic23).  This has no functional impact, but
improves code readability and avoids any confusion when reading the DTS.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240212172335.124845-1-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts | 2 +-
 arch/arm64/boot/dts/qcom/sc8280xp.dtsi                     | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
index eb657e544961d..5fca27f668a5b 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
+++ b/arch/arm64/boot/dts/qcom/sc8280xp-lenovo-thinkpad-x13s.dts
@@ -1204,7 +1204,7 @@ &usb_1_role_switch {
 };
 
 &vamacro {
-	pinctrl-0 = <&dmic01_default>, <&dmic02_default>;
+	pinctrl-0 = <&dmic01_default>, <&dmic23_default>;
 	pinctrl-names = "default";
 
 	vdd-micb-supply = <&vreg_s10b>;
diff --git a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
index febf28356ff8b..38351e8ea8b33 100644
--- a/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc8280xp.dtsi
@@ -2978,7 +2978,7 @@ data-pins {
 				};
 			};
 
-			dmic02_default: dmic02-default-state {
+			dmic23_default: dmic23-default-state {
 				clk-pins {
 					pins = "gpio8";
 					function = "dmic2_clk";
@@ -2994,7 +2994,7 @@ data-pins {
 				};
 			};
 
-			dmic02_sleep: dmic02-sleep-state {
+			dmic23_sleep: dmic23-sleep-state {
 				clk-pins {
 					pins = "gpio8";
 					function = "dmic2_clk";
-- 
2.43.0

[PATCH AUTOSEL 6.8 33/68] arm64: dts: sm8450: correct DMIC2 and DMIC3 pin config node names

[Sasha Levin]

From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

[ Upstream commit 0d3eb7ff1f3a994a5b3e49a9bd48f0c2f3c80ef5 ]

Correct the TLMM pin configuration and muxing node names used for DMIC2
and DMIC3 (dmic01 -> dmic23).  This has no functional impact, but
improves code readability and avoids any confusion when reading the DTS.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240212172335.124845-2-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/qcom/sm8450-hdk.dts | 2 +-
 arch/arm64/boot/dts/qcom/sm8450.dtsi    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8450-hdk.dts b/arch/arm64/boot/dts/qcom/sm8450-hdk.dts
index a20d5d76af352..5a6e0b34934cb 100644
--- a/arch/arm64/boot/dts/qcom/sm8450-hdk.dts
+++ b/arch/arm64/boot/dts/qcom/sm8450-hdk.dts
@@ -1147,7 +1147,7 @@ &usb_1_qmpphy_usb_ss_in {
 };
 
 &vamacro {
-	pinctrl-0 = <&dmic01_default>, <&dmic02_default>;
+	pinctrl-0 = <&dmic01_default>, <&dmic23_default>;
 	pinctrl-names = "default";
 	vdd-micb-supply = <&vreg_s10b_1p8>;
 	qcom,dmic-sample-rate = <600000>;
diff --git a/arch/arm64/boot/dts/qcom/sm8450.dtsi b/arch/arm64/boot/dts/qcom/sm8450.dtsi
index 01e4dfc4babd2..0a802c9a3c8f7 100644
--- a/arch/arm64/boot/dts/qcom/sm8450.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8450.dtsi
@@ -3934,7 +3934,7 @@ data-pins {
 				};
 			};
 
-			dmic02_default: dmic02-default-state {
+			dmic23_default: dmic23-default-state {
 				clk-pins {
 					pins = "gpio8";
 					function = "dmic2_clk";
-- 
2.43.0

[PATCH AUTOSEL 6.8 34/68] arm64: dts: sm8550: correct DMIC2 and DMIC3 pin config node names

[Sasha Levin]

From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

[ Upstream commit c6e5bf9278749eaa094dc944add747f10a15dceb ]

Correct the TLMM pin configuration and muxing node names used for DMIC2
and DMIC3 (dmic01 -> dmic23).  This has no functional impact, but
improves code readability and avoids any confusion when reading the DTS.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240212172335.124845-3-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/qcom/sm8550.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8550.dtsi b/arch/arm64/boot/dts/qcom/sm8550.dtsi
index ee1ba5a8c8fc2..a6663eefd3a30 100644
--- a/arch/arm64/boot/dts/qcom/sm8550.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8550.dtsi
@@ -2507,7 +2507,7 @@ data-pins {
 				};
 			};
 
-			dmic02_default: dmic02-default-state {
+			dmic23_default: dmic23-default-state {
 				clk-pins {
 					pins = "gpio8";
 					function = "dmic2_clk";
-- 
2.43.0

[PATCH AUTOSEL 6.8 35/68] arm64: dts: sm8650: correct DMIC2 and DMIC3 pin config node names

[Sasha Levin]

From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

[ Upstream commit 94c312767160f0d527da035b9080ff5675d17f4c ]

Correct the TLMM pin configuration and muxing node names used for DMIC2
and DMIC3 (dmic01 -> dmic23).  This has no functional impact, but
improves code readability and avoids any confusion when reading the DTS.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20240212172335.124845-4-krzysztof.kozlowski@linaro.org
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/arm64/boot/dts/qcom/sm8650.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index 2df77123a8c7b..27b3917c13277 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -2919,7 +2919,7 @@ data-pins {
 				};
 			};
 
-			dmic02_default: dmic02-default-state {
+			dmic23_default: dmic23-default-state {
 				clk-pins {
 					pins = "gpio8";
 					function = "dmic2_clk";
-- 
2.43.0

[PATCH AUTOSEL 6.8 36/68] ACPI: resource: Add IRQ override quirk for ASUS ExpertBook B2502FBA

[Sasha Levin]

From: Sviatoslav Harasymchuk <sviatoslav.harasymchuk@gmail.com>

[ Upstream commit 0793e511c4c66c38dd26add86f7236bcdc70c3b5 ]

In order to fix the keyboard on ASUS ExpertBook B2502FBA, add an IRQ override
quirk for it in analogy with how it was done for other members of this machine
family.

Link: https://lore.kernel.org/linux-acpi/20230411183144.6932-1-pmenzel@molgen.mpg.de
Link: https://bugzilla.kernel.org/show_bug.cgi?id=217323
Signed-off-by: Sviatoslav Harasymchuk <sviatoslav.harasymchuk@gmail.com>
[ rjw: Subject and changelog rewrite, fix broken white space ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/acpi/resource.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/acpi/resource.c b/drivers/acpi/resource.c
index dacad1d846c0d..2f7ae709bb192 100644
--- a/drivers/acpi/resource.c
+++ b/drivers/acpi/resource.c
@@ -489,6 +489,13 @@ static const struct dmi_system_id irq1_level_low_skip_override[] = {
 			DMI_MATCH(DMI_BOARD_NAME, "B2502CBA"),
 		},
 	},
+	{
+		/* Asus ExpertBook B2502FBA */
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
+			DMI_MATCH(DMI_BOARD_NAME, "B2502FBA"),
+		},
+	},
 	{
 		/* Asus Vivobook E1504GA */
 		.matches = {
-- 
2.43.0

[PATCH AUTOSEL 6.8 37/68] ionic: set adminq irq affinity

[Sasha Levin]

From: Shannon Nelson <shannon.nelson@amd.com>

[ Upstream commit c699f35d658f3c21b69ed24e64b2ea26381e941d ]

We claim to have the AdminQ on our irq0 and thus cpu id 0,
but we need to be sure we set the affinity hint to try to
keep it there.

Signed-off-by: Shannon Nelson <shannon.nelson@amd.com>
Reviewed-by: Brett Creeley <brett.creeley@amd.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/pensando/ionic/ionic_lif.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_lif.c b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
index fcb44ceeb6aa5..44d30115ded13 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_lif.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_lif.c
@@ -3391,9 +3391,12 @@ static int ionic_lif_adminq_init(struct ionic_lif *lif)
 
 	napi_enable(&qcq->napi);
 
-	if (qcq->flags & IONIC_QCQ_F_INTR)
+	if (qcq->flags & IONIC_QCQ_F_INTR) {
+		irq_set_affinity_hint(qcq->intr.vector,
+				      &qcq->intr.affinity_mask);
 		ionic_intr_mask(idev->intr_ctrl, qcq->intr.index,
 				IONIC_INTR_MASK_CLEAR);
+	}
 
 	qcq->flags |= IONIC_QCQ_F_INITED;
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 38/68] net: skbuff: add overflow debug check to pull/push helpers

[Sasha Levin]

From: Florian Westphal <fw@strlen.de>

[ Upstream commit 219eee9c0d16f1b754a8b85275854ab17df0850a ]

syzbot managed to trigger following splat:
BUG: KASAN: use-after-free in __skb_flow_dissect+0x4a3b/0x5e50
Read of size 1 at addr ffff888208a4000e by task a.out/2313
[..]
  __skb_flow_dissect+0x4a3b/0x5e50
  __skb_get_hash+0xb4/0x400
  ip_tunnel_xmit+0x77e/0x26f0
  ipip_tunnel_xmit+0x298/0x410
  ..

Analysis shows that the skb has a valid ->head, but bogus ->data
pointer.

skb->data gets its bogus value via the neigh layer, which does:

1556    __skb_pull(skb, skb_network_offset(skb));

... and the skb was already dodgy at this point:

skb_network_offset(skb) returns a negative value due to an
earlier overflow of skb->network_header (u16).  __skb_pull thus
"adjusts" skb->data by a huge offset, pointing outside skb->head
area.

Allow debug builds to splat when we try to pull/push more than
INT_MAX bytes.

After this, the syzkaller reproducer yields a more precise splat
before the flow dissector attempts to read off skb->data memory:

WARNING: CPU: 5 PID: 2313 at include/linux/skbuff.h:2653 neigh_connected_output+0x28e/0x400
  ip_finish_output2+0xb25/0xed0
  iptunnel_xmit+0x4ff/0x870
  ipgre_xmit+0x78e/0xbb0

Signed-off-by: Florian Westphal <fw@strlen.de>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://lore.kernel.org/r/20240216113700.23013-1-fw@strlen.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/skbuff.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 2dde34c29203b..fd9198fcc3c30 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2642,6 +2642,8 @@ static inline void skb_put_u8(struct sk_buff *skb, u8 val)
 void *skb_push(struct sk_buff *skb, unsigned int len);
 static inline void *__skb_push(struct sk_buff *skb, unsigned int len)
 {
+	DEBUG_NET_WARN_ON_ONCE(len > INT_MAX);
+
 	skb->data -= len;
 	skb->len  += len;
 	return skb->data;
@@ -2650,6 +2652,8 @@ static inline void *__skb_push(struct sk_buff *skb, unsigned int len)
 void *skb_pull(struct sk_buff *skb, unsigned int len);
 static inline void *__skb_pull(struct sk_buff *skb, unsigned int len)
 {
+	DEBUG_NET_WARN_ON_ONCE(len > INT_MAX);
+
 	skb->len -= len;
 	if (unlikely(skb->len < skb->data_len)) {
 #if defined(CONFIG_DEBUG_NET)
@@ -2674,6 +2678,8 @@ void *__pskb_pull_tail(struct sk_buff *skb, int delta);
 static inline enum skb_drop_reason
 pskb_may_pull_reason(struct sk_buff *skb, unsigned int len)
 {
+	DEBUG_NET_WARN_ON_ONCE(len > INT_MAX);
+
 	if (likely(len <= skb_headlen(skb)))
 		return SKB_NOT_DROPPED_YET;
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 39/68] net: mdio: mdio-bcm-unimac: Manage clock around I/O accesses

[Sasha Levin]

From: Florian Fainelli <florian.fainelli@broadcom.com>

[ Upstream commit ee975351cf0c2a11cdf97eae58265c126cb32850 ]

Up until now we have managed not to have the mdio-bcm-unimac manage its
clock except during probe and suspend/resume. This works most of the
time, except where it does not.

With a fully modular build, we can get into a situation whereby the
GENET driver is fully registered, and so is the mdio-bcm-unimac driver,
however the Ethernet PHY driver is not yet, because it depends on a
resource that is not yet available (e.g.: GPIO provider). In that state,
the network device is not usable yet, and so to conserve power, the
GENET driver will have turned off its "main" clock which feeds its MDIO
controller.

When the PHY driver finally probes however, we make an access to the PHY
registers to e.g.: disable interrupts, and this causes a bus error
within the MDIO controller space because the MDIO controller clock(s)
are turned off.

To remedy that, we manage the clock around all of the I/O accesses to
the hardware which are done exclusively during read, write and clock
divider configuration.

This ensures that the register space is accessible, and this also
ensures that there are not unnecessarily elevated reference counts
keeping the clocks active when the network device is administratively
turned off. It would be the case with the previous way of managing the
clock.

Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/mdio/mdio-bcm-unimac.c            | 93 ++++++++++---------
 include/linux/platform_data/mdio-bcm-unimac.h |  3 +
 2 files changed, 53 insertions(+), 43 deletions(-)

diff --git a/drivers/net/mdio/mdio-bcm-unimac.c b/drivers/net/mdio/mdio-bcm-unimac.c
index 68f8ee0ec8baa..6fe08427fdd4a 100644
--- a/drivers/net/mdio/mdio-bcm-unimac.c
+++ b/drivers/net/mdio/mdio-bcm-unimac.c
@@ -94,6 +94,10 @@ static int unimac_mdio_read(struct mii_bus *bus, int phy_id, int reg)
 	int ret;
 	u32 cmd;
 
+	ret = clk_prepare_enable(priv->clk);
+	if (ret)
+		return ret;
+
 	/* Prepare the read operation */
 	cmd = MDIO_RD | (phy_id << MDIO_PMD_SHIFT) | (reg << MDIO_REG_SHIFT);
 	unimac_mdio_writel(priv, cmd, MDIO_CMD);
@@ -103,7 +107,7 @@ static int unimac_mdio_read(struct mii_bus *bus, int phy_id, int reg)
 
 	ret = priv->wait_func(priv->wait_func_data);
 	if (ret)
-		return ret;
+		goto out;
 
 	cmd = unimac_mdio_readl(priv, MDIO_CMD);
 
@@ -112,10 +116,15 @@ static int unimac_mdio_read(struct mii_bus *bus, int phy_id, int reg)
 	 * that condition here and ignore the MDIO controller read failure
 	 * indication.
 	 */
-	if (!(bus->phy_ignore_ta_mask & 1 << phy_id) && (cmd & MDIO_READ_FAIL))
-		return -EIO;
+	if (!(bus->phy_ignore_ta_mask & 1 << phy_id) && (cmd & MDIO_READ_FAIL)) {
+		ret = -EIO;
+		goto out;
+	}
 
-	return cmd & 0xffff;
+	ret = cmd & 0xffff;
+out:
+	clk_disable_unprepare(priv->clk);
+	return ret;
 }
 
 static int unimac_mdio_write(struct mii_bus *bus, int phy_id,
@@ -123,6 +132,11 @@ static int unimac_mdio_write(struct mii_bus *bus, int phy_id,
 {
 	struct unimac_mdio_priv *priv = bus->priv;
 	u32 cmd;
+	int ret;
+
+	ret = clk_prepare_enable(priv->clk);
+	if (ret)
+		return ret;
 
 	/* Prepare the write operation */
 	cmd = MDIO_WR | (phy_id << MDIO_PMD_SHIFT) |
@@ -131,7 +145,10 @@ static int unimac_mdio_write(struct mii_bus *bus, int phy_id,
 
 	unimac_mdio_start(priv);
 
-	return priv->wait_func(priv->wait_func_data);
+	ret = priv->wait_func(priv->wait_func_data);
+	clk_disable_unprepare(priv->clk);
+
+	return ret;
 }
 
 /* Workaround for integrated BCM7xxx Gigabit PHYs which have a problem with
@@ -178,14 +195,19 @@ static int unimac_mdio_reset(struct mii_bus *bus)
 	return 0;
 }
 
-static void unimac_mdio_clk_set(struct unimac_mdio_priv *priv)
+static int unimac_mdio_clk_set(struct unimac_mdio_priv *priv)
 {
 	unsigned long rate;
 	u32 reg, div;
+	int ret;
 
 	/* Keep the hardware default values */
 	if (!priv->clk_freq)
-		return;
+		return 0;
+
+	ret = clk_prepare_enable(priv->clk);
+	if (ret)
+		return ret;
 
 	if (!priv->clk)
 		rate = 250000000;
@@ -195,7 +217,8 @@ static void unimac_mdio_clk_set(struct unimac_mdio_priv *priv)
 	div = (rate / (2 * priv->clk_freq)) - 1;
 	if (div & ~MDIO_CLK_DIV_MASK) {
 		pr_warn("Incorrect MDIO clock frequency, ignoring\n");
-		return;
+		ret = 0;
+		goto out;
 	}
 
 	/* The MDIO clock is the reference clock (typically 250Mhz) divided by
@@ -205,6 +228,9 @@ static void unimac_mdio_clk_set(struct unimac_mdio_priv *priv)
 	reg &= ~(MDIO_CLK_DIV_MASK << MDIO_CLK_DIV_SHIFT);
 	reg |= div << MDIO_CLK_DIV_SHIFT;
 	unimac_mdio_writel(priv, reg, MDIO_CFG);
+out:
+	clk_disable_unprepare(priv->clk);
+	return ret;
 }
 
 static int unimac_mdio_probe(struct platform_device *pdev)
@@ -235,24 +261,12 @@ static int unimac_mdio_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 
-	priv->clk = devm_clk_get_optional(&pdev->dev, NULL);
-	if (IS_ERR(priv->clk))
-		return PTR_ERR(priv->clk);
-
-	ret = clk_prepare_enable(priv->clk);
-	if (ret)
-		return ret;
-
 	if (of_property_read_u32(np, "clock-frequency", &priv->clk_freq))
 		priv->clk_freq = 0;
 
-	unimac_mdio_clk_set(priv);
-
 	priv->mii_bus = mdiobus_alloc();
-	if (!priv->mii_bus) {
-		ret = -ENOMEM;
-		goto out_clk_disable;
-	}
+	if (!priv->mii_bus)
+		return -ENOMEM;
 
 	bus = priv->mii_bus;
 	bus->priv = priv;
@@ -261,17 +275,29 @@ static int unimac_mdio_probe(struct platform_device *pdev)
 		priv->wait_func = pdata->wait_func;
 		priv->wait_func_data = pdata->wait_func_data;
 		bus->phy_mask = ~pdata->phy_mask;
+		priv->clk = pdata->clk;
 	} else {
 		bus->name = "unimac MII bus";
 		priv->wait_func_data = priv;
 		priv->wait_func = unimac_mdio_poll;
+		priv->clk = devm_clk_get_optional(&pdev->dev, NULL);
+	}
+
+	if (IS_ERR(priv->clk)) {
+		ret = PTR_ERR(priv->clk);
+		goto out_mdio_free;
 	}
+
 	bus->parent = &pdev->dev;
 	bus->read = unimac_mdio_read;
 	bus->write = unimac_mdio_write;
 	bus->reset = unimac_mdio_reset;
 	snprintf(bus->id, MII_BUS_ID_SIZE, "%s-%d", pdev->name, pdev->id);
 
+	ret = unimac_mdio_clk_set(priv);
+	if (ret)
+		goto out_mdio_free;
+
 	ret = of_mdiobus_register(bus, np);
 	if (ret) {
 		dev_err(&pdev->dev, "MDIO bus registration failed\n");
@@ -286,8 +312,6 @@ static int unimac_mdio_probe(struct platform_device *pdev)
 
 out_mdio_free:
 	mdiobus_free(bus);
-out_clk_disable:
-	clk_disable_unprepare(priv->clk);
 	return ret;
 }
 
@@ -297,34 +321,17 @@ static void unimac_mdio_remove(struct platform_device *pdev)
 
 	mdiobus_unregister(priv->mii_bus);
 	mdiobus_free(priv->mii_bus);
-	clk_disable_unprepare(priv->clk);
-}
-
-static int __maybe_unused unimac_mdio_suspend(struct device *d)
-{
-	struct unimac_mdio_priv *priv = dev_get_drvdata(d);
-
-	clk_disable_unprepare(priv->clk);
-
-	return 0;
 }
 
 static int __maybe_unused unimac_mdio_resume(struct device *d)
 {
 	struct unimac_mdio_priv *priv = dev_get_drvdata(d);
-	int ret;
 
-	ret = clk_prepare_enable(priv->clk);
-	if (ret)
-		return ret;
-
-	unimac_mdio_clk_set(priv);
-
-	return 0;
+	return unimac_mdio_clk_set(priv);
 }
 
 static SIMPLE_DEV_PM_OPS(unimac_mdio_pm_ops,
-			 unimac_mdio_suspend, unimac_mdio_resume);
+			 NULL, unimac_mdio_resume);
 
 static const struct of_device_id unimac_mdio_ids[] = {
 	{ .compatible = "brcm,asp-v2.1-mdio", },
diff --git a/include/linux/platform_data/mdio-bcm-unimac.h b/include/linux/platform_data/mdio-bcm-unimac.h
index 8a5f9f0b2c520..724e1f57b81ff 100644
--- a/include/linux/platform_data/mdio-bcm-unimac.h
+++ b/include/linux/platform_data/mdio-bcm-unimac.h
@@ -1,11 +1,14 @@
 #ifndef __MDIO_BCM_UNIMAC_PDATA_H
 #define __MDIO_BCM_UNIMAC_PDATA_H
 
+struct clk;
+
 struct unimac_mdio_pdata {
 	u32 phy_mask;
 	int (*wait_func)(void *data);
 	void *wait_func_data;
 	const char *bus_name;
+	struct clk *clk;
 };
 
 #define UNIMAC_MDIO_DRV_NAME	"unimac-mdio"
-- 
2.43.0

[PATCH AUTOSEL 6.8 40/68] firmware: tegra: bpmp: Return directly after a failed kzalloc() in get_filename()

[Sasha Levin]

From: Markus Elfring <elfring@users.sourceforge.net>

[ Upstream commit 1315848f1f8a0100cb6f8a7187bc320c5d98947f ]

The kfree() function was called in one case by
the get_filename() function during error handling
even if the passed variable contained a null pointer.
This issue was detected by using the Coccinelle software.

Thus return directly after a call of the function “kzalloc” failed
at the beginning.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/firmware/tegra/bpmp-debugfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/firmware/tegra/bpmp-debugfs.c b/drivers/firmware/tegra/bpmp-debugfs.c
index bbcdd9fed3fb6..4221fed70ad48 100644
--- a/drivers/firmware/tegra/bpmp-debugfs.c
+++ b/drivers/firmware/tegra/bpmp-debugfs.c
@@ -77,7 +77,7 @@ static const char *get_filename(struct tegra_bpmp *bpmp,
 
 	root_path_buf = kzalloc(root_path_buf_len, GFP_KERNEL);
 	if (!root_path_buf)
-		goto out;
+		return NULL;
 
 	root_path = dentry_path(bpmp->debugfs_mirror, root_path_buf,
 				root_path_buf_len);
-- 
2.43.0

[PATCH AUTOSEL 6.8 41/68] wifi: brcmfmac: Add DMI nvram filename quirk for ACEPC W5 Pro

[Sasha Levin]

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 32167707aa5e7ae4b160c18be79d85a7b4fdfcfb ]

The ACEPC W5 Pro HDMI stick contains quite generic names in the sys_vendor
and product_name DMI strings, without this patch brcmfmac will try to load:
"brcmfmac43455-sdio.$(DEFAULT_STRING)-$(DEFAULT_STRING).txt" as nvram file
which is both too generic and messy with the $ symbols in the name.

The ACEPC W5 Pro uses the same Ampak AP6255 module as the ACEPC T8
and the nvram for the T8 is already in linux-firmware, so point the new
DMI nvram filename quirk to the T8 nvram file.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://msgid.link/20240216213649.251718-1-hdegoede@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
index 86ff174936a9a..c3a602197662b 100644
--- a/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
+++ b/drivers/net/wireless/broadcom/brcm80211/brcmfmac/dmi.c
@@ -82,6 +82,15 @@ static const struct dmi_system_id dmi_platform_data[] = {
 		},
 		.driver_data = (void *)&acepc_t8_data,
 	},
+	{
+		/* ACEPC W5 Pro Cherry Trail Z8350 HDMI stick, same wifi as the T8 */
+		.matches = {
+			DMI_MATCH(DMI_BOARD_NAME, "T3 MRD"),
+			DMI_MATCH(DMI_CHASSIS_TYPE, "3"),
+			DMI_MATCH(DMI_BIOS_VENDOR, "American Megatrends Inc."),
+		},
+		.driver_data = (void *)&acepc_t8_data,
+	},
 	{
 		/* Chuwi Hi8 Pro with D2D3_Hi8Pro.233 BIOS */
 		.matches = {
-- 
2.43.0

[PATCH AUTOSEL 6.8 42/68] wifi: mt76: mt7915: add locking for accessing mapped registers

[Sasha Levin]

From: Shayne Chen <shayne.chen@mediatek.com>

[ Upstream commit 0937f95ab07af6e663ae932d592f630d9eb591da ]

Sicne the mapping is global, mapped register access needs to be protected
against concurrent access, otherwise a race condition might cause the reads
or writes to go towards the wrong register

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../net/wireless/mediatek/mt76/mt7915/mmio.c  | 45 ++++++++++++++++---
 .../wireless/mediatek/mt76/mt7915/mt7915.h    |  1 +
 2 files changed, 41 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
index 3039f53e22454..dceb505987b19 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
@@ -490,6 +490,11 @@ static u32 __mt7915_reg_addr(struct mt7915_dev *dev, u32 addr)
 		return dev->reg.map[i].maps + ofs;
 	}
 
+	return 0;
+}
+
+static u32 __mt7915_reg_remap_addr(struct mt7915_dev *dev, u32 addr)
+{
 	if ((addr >= MT_INFRA_BASE && addr < MT_WFSYS0_PHY_START) ||
 	    (addr >= MT_WFSYS0_PHY_START && addr < MT_WFSYS1_PHY_START) ||
 	    (addr >= MT_WFSYS1_PHY_START && addr <= MT_WFSYS1_PHY_END))
@@ -514,15 +519,30 @@ void mt7915_memcpy_fromio(struct mt7915_dev *dev, void *buf, u32 offset,
 {
 	u32 addr = __mt7915_reg_addr(dev, offset);
 
-	memcpy_fromio(buf, dev->mt76.mmio.regs + addr, len);
+	if (addr) {
+		memcpy_fromio(buf, dev->mt76.mmio.regs + addr, len);
+		return;
+	}
+
+	spin_lock_bh(&dev->reg_lock);
+	memcpy_fromio(buf, dev->mt76.mmio.regs +
+			   __mt7915_reg_remap_addr(dev, offset), len);
+	spin_unlock_bh(&dev->reg_lock);
 }
 
 static u32 mt7915_rr(struct mt76_dev *mdev, u32 offset)
 {
 	struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
-	u32 addr = __mt7915_reg_addr(dev, offset);
+	u32 addr = __mt7915_reg_addr(dev, offset), val;
 
-	return dev->bus_ops->rr(mdev, addr);
+	if (addr)
+		return dev->bus_ops->rr(mdev, addr);
+
+	spin_lock_bh(&dev->reg_lock);
+	val = dev->bus_ops->rr(mdev, __mt7915_reg_remap_addr(dev, offset));
+	spin_unlock_bh(&dev->reg_lock);
+
+	return val;
 }
 
 static void mt7915_wr(struct mt76_dev *mdev, u32 offset, u32 val)
@@ -530,7 +550,14 @@ static void mt7915_wr(struct mt76_dev *mdev, u32 offset, u32 val)
 	struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
 	u32 addr = __mt7915_reg_addr(dev, offset);
 
-	dev->bus_ops->wr(mdev, addr, val);
+	if (addr) {
+		dev->bus_ops->wr(mdev, addr, val);
+		return;
+	}
+
+	spin_lock_bh(&dev->reg_lock);
+	dev->bus_ops->wr(mdev, __mt7915_reg_remap_addr(dev, offset), val);
+	spin_unlock_bh(&dev->reg_lock);
 }
 
 static u32 mt7915_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
@@ -538,7 +565,14 @@ static u32 mt7915_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
 	struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
 	u32 addr = __mt7915_reg_addr(dev, offset);
 
-	return dev->bus_ops->rmw(mdev, addr, mask, val);
+	if (addr)
+		return dev->bus_ops->rmw(mdev, addr, mask, val);
+
+	spin_lock_bh(&dev->reg_lock);
+	val = dev->bus_ops->rmw(mdev, __mt7915_reg_remap_addr(dev, offset), mask, val);
+	spin_unlock_bh(&dev->reg_lock);
+
+	return val;
 }
 
 #ifdef CONFIG_NET_MEDIATEK_SOC_WED
@@ -707,6 +741,7 @@ static int mt7915_mmio_init(struct mt76_dev *mdev,
 
 	dev = container_of(mdev, struct mt7915_dev, mt76);
 	mt76_mmio_init(&dev->mt76, mem_base);
+	spin_lock_init(&dev->reg_lock);
 
 	switch (device_id) {
 	case 0x7915:
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index 4727d9c7b11de..6e79bc65f5a51 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -287,6 +287,7 @@ struct mt7915_dev {
 
 	struct list_head sta_rc_list;
 	struct list_head twt_list;
+	spinlock_t reg_lock;
 
 	u32 hw_pattern;
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 42/68] wifi: mt76: mt7915: add locking for accessing mapped registers

[Sasha Levin]

From: Shayne Chen <shayne.chen@mediatek.com>

[ Upstream commit 0937f95ab07af6e663ae932d592f630d9eb591da ]

Sicne the mapping is global, mapped register access needs to be protected
against concurrent access, otherwise a race condition might cause the reads
or writes to go towards the wrong register

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../net/wireless/mediatek/mt76/mt7915/mmio.c  | 45 ++++++++++++++++---
 .../wireless/mediatek/mt76/mt7915/mt7915.h    |  1 +
 2 files changed, 41 insertions(+), 5 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
index 3039f53e22454..dceb505987b19 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mmio.c
@@ -490,6 +490,11 @@ static u32 __mt7915_reg_addr(struct mt7915_dev *dev, u32 addr)
 		return dev->reg.map[i].maps + ofs;
 	}
 
+	return 0;
+}
+
+static u32 __mt7915_reg_remap_addr(struct mt7915_dev *dev, u32 addr)
+{
 	if ((addr >= MT_INFRA_BASE && addr < MT_WFSYS0_PHY_START) ||
 	    (addr >= MT_WFSYS0_PHY_START && addr < MT_WFSYS1_PHY_START) ||
 	    (addr >= MT_WFSYS1_PHY_START && addr <= MT_WFSYS1_PHY_END))
@@ -514,15 +519,30 @@ void mt7915_memcpy_fromio(struct mt7915_dev *dev, void *buf, u32 offset,
 {
 	u32 addr = __mt7915_reg_addr(dev, offset);
 
-	memcpy_fromio(buf, dev->mt76.mmio.regs + addr, len);
+	if (addr) {
+		memcpy_fromio(buf, dev->mt76.mmio.regs + addr, len);
+		return;
+	}
+
+	spin_lock_bh(&dev->reg_lock);
+	memcpy_fromio(buf, dev->mt76.mmio.regs +
+			   __mt7915_reg_remap_addr(dev, offset), len);
+	spin_unlock_bh(&dev->reg_lock);
 }
 
 static u32 mt7915_rr(struct mt76_dev *mdev, u32 offset)
 {
 	struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
-	u32 addr = __mt7915_reg_addr(dev, offset);
+	u32 addr = __mt7915_reg_addr(dev, offset), val;
 
-	return dev->bus_ops->rr(mdev, addr);
+	if (addr)
+		return dev->bus_ops->rr(mdev, addr);
+
+	spin_lock_bh(&dev->reg_lock);
+	val = dev->bus_ops->rr(mdev, __mt7915_reg_remap_addr(dev, offset));
+	spin_unlock_bh(&dev->reg_lock);
+
+	return val;
 }
 
 static void mt7915_wr(struct mt76_dev *mdev, u32 offset, u32 val)
@@ -530,7 +550,14 @@ static void mt7915_wr(struct mt76_dev *mdev, u32 offset, u32 val)
 	struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
 	u32 addr = __mt7915_reg_addr(dev, offset);
 
-	dev->bus_ops->wr(mdev, addr, val);
+	if (addr) {
+		dev->bus_ops->wr(mdev, addr, val);
+		return;
+	}
+
+	spin_lock_bh(&dev->reg_lock);
+	dev->bus_ops->wr(mdev, __mt7915_reg_remap_addr(dev, offset), val);
+	spin_unlock_bh(&dev->reg_lock);
 }
 
 static u32 mt7915_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
@@ -538,7 +565,14 @@ static u32 mt7915_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
 	struct mt7915_dev *dev = container_of(mdev, struct mt7915_dev, mt76);
 	u32 addr = __mt7915_reg_addr(dev, offset);
 
-	return dev->bus_ops->rmw(mdev, addr, mask, val);
+	if (addr)
+		return dev->bus_ops->rmw(mdev, addr, mask, val);
+
+	spin_lock_bh(&dev->reg_lock);
+	val = dev->bus_ops->rmw(mdev, __mt7915_reg_remap_addr(dev, offset), mask, val);
+	spin_unlock_bh(&dev->reg_lock);
+
+	return val;
 }
 
 #ifdef CONFIG_NET_MEDIATEK_SOC_WED
@@ -707,6 +741,7 @@ static int mt7915_mmio_init(struct mt76_dev *mdev,
 
 	dev = container_of(mdev, struct mt7915_dev, mt76);
 	mt76_mmio_init(&dev->mt76, mem_base);
+	spin_lock_init(&dev->reg_lock);
 
 	switch (device_id) {
 	case 0x7915:
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index 4727d9c7b11de..6e79bc65f5a51 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -287,6 +287,7 @@ struct mt7915_dev {
 
 	struct list_head sta_rc_list;
 	struct list_head twt_list;
+	spinlock_t reg_lock;
 
 	u32 hw_pattern;
 
-- 
2.43.0


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[PATCH AUTOSEL 6.8 43/68] wifi: mt76: mt7996: disable AMSDU for non-data frames

[Sasha Levin]

From: Peter Chiu <chui-hao.chiu@mediatek.com>

[ Upstream commit 5d5edc09197cd8c705b42a73cdf8ba03db53c033 ]

Disable AMSDU for non-data frames to prevent TX token leak issues.

Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7996/mac.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
index 53258488d49f3..b5b8b163f94df 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
@@ -732,6 +732,9 @@ mt7996_mac_write_txwi_8023(struct mt7996_dev *dev, __le32 *txwi,
 	      FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype);
 
 	txwi[2] |= cpu_to_le32(val);
+
+	if (wcid->amsdu)
+		txwi[3] |= cpu_to_le32(MT_TXD3_HW_AMSDU);
 }
 
 static void
@@ -862,8 +865,6 @@ void mt7996_mac_write_txwi(struct mt7996_dev *dev, __le32 *txwi,
 		val |= MT_TXD3_PROTECT_FRAME;
 	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 		val |= MT_TXD3_NO_ACK;
-	if (wcid->amsdu)
-		val |= MT_TXD3_HW_AMSDU;
 
 	txwi[3] = cpu_to_le32(val);
 	txwi[4] = 0;
-- 
2.43.0

[PATCH AUTOSEL 6.8 43/68] wifi: mt76: mt7996: disable AMSDU for non-data frames

[Sasha Levin]

From: Peter Chiu <chui-hao.chiu@mediatek.com>

[ Upstream commit 5d5edc09197cd8c705b42a73cdf8ba03db53c033 ]

Disable AMSDU for non-data frames to prevent TX token leak issues.

Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/mediatek/mt76/mt7996/mac.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
index 53258488d49f3..b5b8b163f94df 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mac.c
@@ -732,6 +732,9 @@ mt7996_mac_write_txwi_8023(struct mt7996_dev *dev, __le32 *txwi,
 	      FIELD_PREP(MT_TXD2_SUB_TYPE, fc_stype);
 
 	txwi[2] |= cpu_to_le32(val);
+
+	if (wcid->amsdu)
+		txwi[3] |= cpu_to_le32(MT_TXD3_HW_AMSDU);
 }
 
 static void
@@ -862,8 +865,6 @@ void mt7996_mac_write_txwi(struct mt7996_dev *dev, __le32 *txwi,
 		val |= MT_TXD3_PROTECT_FRAME;
 	if (info->flags & IEEE80211_TX_CTL_NO_ACK)
 		val |= MT_TXD3_NO_ACK;
-	if (wcid->amsdu)
-		val |= MT_TXD3_HW_AMSDU;
 
 	txwi[3] = cpu_to_le32(val);
 	txwi[4] = 0;
-- 
2.43.0


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[PATCH AUTOSEL 6.8 44/68] wifi: mt76: mt7996: add locking for accessing mapped registers

[Sasha Levin]

From: Shayne Chen <shayne.chen@mediatek.com>

[ Upstream commit 3687854d3e7e7fd760d939dd9e5a3520d5ab60fe ]

A race condition was observed when accessing mapped registers, so add
locking to protect against concurrent access.

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../net/wireless/mediatek/mt76/mt7996/mmio.c  | 64 ++++++++++++-------
 .../wireless/mediatek/mt76/mt7996/mt7996.h    |  3 +-
 2 files changed, 43 insertions(+), 24 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
index 9f2abfa273c9b..efd4a767eb37d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
@@ -140,7 +140,6 @@ static u32 mt7996_reg_map_l1(struct mt7996_dev *dev, u32 addr)
 	u32 offset = FIELD_GET(MT_HIF_REMAP_L1_OFFSET, addr);
 	u32 base = FIELD_GET(MT_HIF_REMAP_L1_BASE, addr);
 
-	dev->reg_l1_backup = dev->bus_ops->rr(&dev->mt76, MT_HIF_REMAP_L1);
 	dev->bus_ops->rmw(&dev->mt76, MT_HIF_REMAP_L1,
 			  MT_HIF_REMAP_L1_MASK,
 			  FIELD_PREP(MT_HIF_REMAP_L1_MASK, base));
@@ -155,7 +154,6 @@ static u32 mt7996_reg_map_l2(struct mt7996_dev *dev, u32 addr)
 	u32 offset = FIELD_GET(MT_HIF_REMAP_L2_OFFSET, addr);
 	u32 base = FIELD_GET(MT_HIF_REMAP_L2_BASE, addr);
 
-	dev->reg_l2_backup = dev->bus_ops->rr(&dev->mt76, MT_HIF_REMAP_L2);
 	dev->bus_ops->rmw(&dev->mt76, MT_HIF_REMAP_L2,
 			  MT_HIF_REMAP_L2_MASK,
 			  FIELD_PREP(MT_HIF_REMAP_L2_MASK, base));
@@ -165,26 +163,10 @@ static u32 mt7996_reg_map_l2(struct mt7996_dev *dev, u32 addr)
 	return MT_HIF_REMAP_BASE_L2 + offset;
 }
 
-static void mt7996_reg_remap_restore(struct mt7996_dev *dev)
-{
-	/* remap to ori status */
-	if (unlikely(dev->reg_l1_backup)) {
-		dev->bus_ops->wr(&dev->mt76, MT_HIF_REMAP_L1, dev->reg_l1_backup);
-		dev->reg_l1_backup = 0;
-	}
-
-	if (dev->reg_l2_backup) {
-		dev->bus_ops->wr(&dev->mt76, MT_HIF_REMAP_L2, dev->reg_l2_backup);
-		dev->reg_l2_backup = 0;
-	}
-}
-
 static u32 __mt7996_reg_addr(struct mt7996_dev *dev, u32 addr)
 {
 	int i;
 
-	mt7996_reg_remap_restore(dev);
-
 	if (addr < 0x100000)
 		return addr;
 
@@ -201,6 +183,11 @@ static u32 __mt7996_reg_addr(struct mt7996_dev *dev, u32 addr)
 		return dev->reg.map[i].mapped + ofs;
 	}
 
+	return 0;
+}
+
+static u32 __mt7996_reg_remap_addr(struct mt7996_dev *dev, u32 addr)
+{
 	if ((addr >= MT_INFRA_BASE && addr < MT_WFSYS0_PHY_START) ||
 	    (addr >= MT_WFSYS0_PHY_START && addr < MT_WFSYS1_PHY_START) ||
 	    (addr >= MT_WFSYS1_PHY_START && addr <= MT_WFSYS1_PHY_END))
@@ -225,28 +212,60 @@ void mt7996_memcpy_fromio(struct mt7996_dev *dev, void *buf, u32 offset,
 {
 	u32 addr = __mt7996_reg_addr(dev, offset);
 
-	memcpy_fromio(buf, dev->mt76.mmio.regs + addr, len);
+	if (addr) {
+		memcpy_fromio(buf, dev->mt76.mmio.regs + addr, len);
+		return;
+	}
+
+	spin_lock_bh(&dev->reg_lock);
+	memcpy_fromio(buf, dev->mt76.mmio.regs +
+			   __mt7996_reg_remap_addr(dev, offset), len);
+	spin_unlock_bh(&dev->reg_lock);
 }
 
 static u32 mt7996_rr(struct mt76_dev *mdev, u32 offset)
 {
 	struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76);
+	u32 addr = __mt7996_reg_addr(dev, offset), val;
+
+	if (addr)
+		return dev->bus_ops->rr(mdev, addr);
 
-	return dev->bus_ops->rr(mdev, __mt7996_reg_addr(dev, offset));
+	spin_lock_bh(&dev->reg_lock);
+	val = dev->bus_ops->rr(mdev, __mt7996_reg_remap_addr(dev, offset));
+	spin_unlock_bh(&dev->reg_lock);
+
+	return val;
 }
 
 static void mt7996_wr(struct mt76_dev *mdev, u32 offset, u32 val)
 {
 	struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76);
+	u32 addr = __mt7996_reg_addr(dev, offset);
 
-	dev->bus_ops->wr(mdev, __mt7996_reg_addr(dev, offset), val);
+	if (addr) {
+		dev->bus_ops->wr(mdev, addr, val);
+		return;
+	}
+
+	spin_lock_bh(&dev->reg_lock);
+	dev->bus_ops->wr(mdev, __mt7996_reg_remap_addr(dev, offset), val);
+	spin_unlock_bh(&dev->reg_lock);
 }
 
 static u32 mt7996_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
 {
 	struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76);
+	u32 addr = __mt7996_reg_addr(dev, offset);
+
+	if (addr)
+		return dev->bus_ops->rmw(mdev, addr, mask, val);
+
+	spin_lock_bh(&dev->reg_lock);
+	val = dev->bus_ops->rmw(mdev, __mt7996_reg_remap_addr(dev, offset), mask, val);
+	spin_unlock_bh(&dev->reg_lock);
 
-	return dev->bus_ops->rmw(mdev, __mt7996_reg_addr(dev, offset), mask, val);
+	return val;
 }
 
 #ifdef CONFIG_NET_MEDIATEK_SOC_WED
@@ -421,6 +440,7 @@ static int mt7996_mmio_init(struct mt76_dev *mdev,
 
 	dev = container_of(mdev, struct mt7996_dev, mt76);
 	mt76_mmio_init(&dev->mt76, mem_base);
+	spin_lock_init(&dev->reg_lock);
 
 	switch (device_id) {
 	case 0x7990:
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
index bc73bcb47bf02..eac7051d9a9a6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
@@ -324,8 +324,7 @@ struct mt7996_dev {
 		u8 n_agrt;
 	} twt;
 
-	u32 reg_l1_backup;
-	u32 reg_l2_backup;
+	spinlock_t reg_lock;
 
 	u8 wtbl_size_group;
 };
-- 
2.43.0

[PATCH AUTOSEL 6.8 44/68] wifi: mt76: mt7996: add locking for accessing mapped registers

[Sasha Levin]

From: Shayne Chen <shayne.chen@mediatek.com>

[ Upstream commit 3687854d3e7e7fd760d939dd9e5a3520d5ab60fe ]

A race condition was observed when accessing mapped registers, so add
locking to protect against concurrent access.

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 .../net/wireless/mediatek/mt76/mt7996/mmio.c  | 64 ++++++++++++-------
 .../wireless/mediatek/mt76/mt7996/mt7996.h    |  3 +-
 2 files changed, 43 insertions(+), 24 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
index 9f2abfa273c9b..efd4a767eb37d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mmio.c
@@ -140,7 +140,6 @@ static u32 mt7996_reg_map_l1(struct mt7996_dev *dev, u32 addr)
 	u32 offset = FIELD_GET(MT_HIF_REMAP_L1_OFFSET, addr);
 	u32 base = FIELD_GET(MT_HIF_REMAP_L1_BASE, addr);
 
-	dev->reg_l1_backup = dev->bus_ops->rr(&dev->mt76, MT_HIF_REMAP_L1);
 	dev->bus_ops->rmw(&dev->mt76, MT_HIF_REMAP_L1,
 			  MT_HIF_REMAP_L1_MASK,
 			  FIELD_PREP(MT_HIF_REMAP_L1_MASK, base));
@@ -155,7 +154,6 @@ static u32 mt7996_reg_map_l2(struct mt7996_dev *dev, u32 addr)
 	u32 offset = FIELD_GET(MT_HIF_REMAP_L2_OFFSET, addr);
 	u32 base = FIELD_GET(MT_HIF_REMAP_L2_BASE, addr);
 
-	dev->reg_l2_backup = dev->bus_ops->rr(&dev->mt76, MT_HIF_REMAP_L2);
 	dev->bus_ops->rmw(&dev->mt76, MT_HIF_REMAP_L2,
 			  MT_HIF_REMAP_L2_MASK,
 			  FIELD_PREP(MT_HIF_REMAP_L2_MASK, base));
@@ -165,26 +163,10 @@ static u32 mt7996_reg_map_l2(struct mt7996_dev *dev, u32 addr)
 	return MT_HIF_REMAP_BASE_L2 + offset;
 }
 
-static void mt7996_reg_remap_restore(struct mt7996_dev *dev)
-{
-	/* remap to ori status */
-	if (unlikely(dev->reg_l1_backup)) {
-		dev->bus_ops->wr(&dev->mt76, MT_HIF_REMAP_L1, dev->reg_l1_backup);
-		dev->reg_l1_backup = 0;
-	}
-
-	if (dev->reg_l2_backup) {
-		dev->bus_ops->wr(&dev->mt76, MT_HIF_REMAP_L2, dev->reg_l2_backup);
-		dev->reg_l2_backup = 0;
-	}
-}
-
 static u32 __mt7996_reg_addr(struct mt7996_dev *dev, u32 addr)
 {
 	int i;
 
-	mt7996_reg_remap_restore(dev);
-
 	if (addr < 0x100000)
 		return addr;
 
@@ -201,6 +183,11 @@ static u32 __mt7996_reg_addr(struct mt7996_dev *dev, u32 addr)
 		return dev->reg.map[i].mapped + ofs;
 	}
 
+	return 0;
+}
+
+static u32 __mt7996_reg_remap_addr(struct mt7996_dev *dev, u32 addr)
+{
 	if ((addr >= MT_INFRA_BASE && addr < MT_WFSYS0_PHY_START) ||
 	    (addr >= MT_WFSYS0_PHY_START && addr < MT_WFSYS1_PHY_START) ||
 	    (addr >= MT_WFSYS1_PHY_START && addr <= MT_WFSYS1_PHY_END))
@@ -225,28 +212,60 @@ void mt7996_memcpy_fromio(struct mt7996_dev *dev, void *buf, u32 offset,
 {
 	u32 addr = __mt7996_reg_addr(dev, offset);
 
-	memcpy_fromio(buf, dev->mt76.mmio.regs + addr, len);
+	if (addr) {
+		memcpy_fromio(buf, dev->mt76.mmio.regs + addr, len);
+		return;
+	}
+
+	spin_lock_bh(&dev->reg_lock);
+	memcpy_fromio(buf, dev->mt76.mmio.regs +
+			   __mt7996_reg_remap_addr(dev, offset), len);
+	spin_unlock_bh(&dev->reg_lock);
 }
 
 static u32 mt7996_rr(struct mt76_dev *mdev, u32 offset)
 {
 	struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76);
+	u32 addr = __mt7996_reg_addr(dev, offset), val;
+
+	if (addr)
+		return dev->bus_ops->rr(mdev, addr);
 
-	return dev->bus_ops->rr(mdev, __mt7996_reg_addr(dev, offset));
+	spin_lock_bh(&dev->reg_lock);
+	val = dev->bus_ops->rr(mdev, __mt7996_reg_remap_addr(dev, offset));
+	spin_unlock_bh(&dev->reg_lock);
+
+	return val;
 }
 
 static void mt7996_wr(struct mt76_dev *mdev, u32 offset, u32 val)
 {
 	struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76);
+	u32 addr = __mt7996_reg_addr(dev, offset);
 
-	dev->bus_ops->wr(mdev, __mt7996_reg_addr(dev, offset), val);
+	if (addr) {
+		dev->bus_ops->wr(mdev, addr, val);
+		return;
+	}
+
+	spin_lock_bh(&dev->reg_lock);
+	dev->bus_ops->wr(mdev, __mt7996_reg_remap_addr(dev, offset), val);
+	spin_unlock_bh(&dev->reg_lock);
 }
 
 static u32 mt7996_rmw(struct mt76_dev *mdev, u32 offset, u32 mask, u32 val)
 {
 	struct mt7996_dev *dev = container_of(mdev, struct mt7996_dev, mt76);
+	u32 addr = __mt7996_reg_addr(dev, offset);
+
+	if (addr)
+		return dev->bus_ops->rmw(mdev, addr, mask, val);
+
+	spin_lock_bh(&dev->reg_lock);
+	val = dev->bus_ops->rmw(mdev, __mt7996_reg_remap_addr(dev, offset), mask, val);
+	spin_unlock_bh(&dev->reg_lock);
 
-	return dev->bus_ops->rmw(mdev, __mt7996_reg_addr(dev, offset), mask, val);
+	return val;
 }
 
 #ifdef CONFIG_NET_MEDIATEK_SOC_WED
@@ -421,6 +440,7 @@ static int mt7996_mmio_init(struct mt76_dev *mdev,
 
 	dev = container_of(mdev, struct mt7996_dev, mt76);
 	mt76_mmio_init(&dev->mt76, mem_base);
+	spin_lock_init(&dev->reg_lock);
 
 	switch (device_id) {
 	case 0x7990:
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
index bc73bcb47bf02..eac7051d9a9a6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
@@ -324,8 +324,7 @@ struct mt7996_dev {
 		u8 n_agrt;
 	} twt;
 
-	u32 reg_l1_backup;
-	u32 reg_l2_backup;
+	spinlock_t reg_lock;
 
 	u8 wtbl_size_group;
 };
-- 
2.43.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH AUTOSEL 6.8 45/68] ACPI: x86: Move acpi_quirk_skip_serdev_enumeration() out of CONFIG_X86_ANDROID_TABLETS

[Sasha Levin]

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 7c86e17455de1a442ec906d3449148b5e9a218a4 ]

Some recent(ish) Dell AIO devices have a backlight controller board
connected to an UART.

This UART has a DELL0501 HID with CID set to PNP0501 so that the UART is
still handled by 8250_pnp.c. Unfortunately there is no separate ACPI device
with an UartSerialBusV2() resource to model the backlight-controller.

The next patch in this series will use acpi_quirk_skip_serdev_enumeration()
to still create a serdev for this for a backlight driver to bind to
instead of creating a /dev/ttyS0.

This new acpi_quirk_skip_serdev_enumeration() use is not limited to Android
X86 tablets, so move it out of the ifdef CONFIG_X86_ANDROID_TABLETS block.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/acpi/x86/utils.c | 18 ++++++++++++++----
 include/acpi/acpi_bus.h  | 14 +++++++-------
 2 files changed, 21 insertions(+), 11 deletions(-)

diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index bc65ebfcdf767..8829a907eee02 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -428,7 +428,7 @@ bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
 }
 EXPORT_SYMBOL_GPL(acpi_quirk_skip_i2c_client_enumeration);
 
-int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
 {
 	struct acpi_device *adev = ACPI_COMPANION(controller_parent);
 	const struct dmi_system_id *dmi_id;
@@ -436,8 +436,6 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s
 	u64 uid;
 	int ret;
 
-	*skip = false;
-
 	ret = acpi_dev_uid_to_integer(adev, &uid);
 	if (ret)
 		return 0;
@@ -463,7 +461,6 @@ int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *s
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
 
 bool acpi_quirk_skip_gpio_event_handlers(void)
 {
@@ -478,8 +475,21 @@ bool acpi_quirk_skip_gpio_event_handlers(void)
 	return (quirks & ACPI_QUIRK_SKIP_GPIO_EVENT_HANDLERS);
 }
 EXPORT_SYMBOL_GPL(acpi_quirk_skip_gpio_event_handlers);
+#else
+static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+{
+	return 0;
+}
 #endif
 
+int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+{
+	*skip = false;
+
+	return acpi_dmi_skip_serdev_enumeration(controller_parent, skip);
+}
+EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
+
 /* Lists of PMIC ACPI HIDs with an (often better) native charger driver */
 static const struct {
 	const char *hid;
diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h
index e4d24d3f9abb5..446225aada50d 100644
--- a/include/acpi/acpi_bus.h
+++ b/include/acpi/acpi_bus.h
@@ -749,6 +749,7 @@ bool acpi_device_override_status(struct acpi_device *adev, unsigned long long *s
 bool acpi_quirk_skip_acpi_ac_and_battery(void);
 int acpi_install_cmos_rtc_space_handler(acpi_handle handle);
 void acpi_remove_cmos_rtc_space_handler(acpi_handle handle);
+int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
 #else
 static inline bool acpi_device_override_status(struct acpi_device *adev,
 					       unsigned long long *status)
@@ -766,23 +767,22 @@ static inline int acpi_install_cmos_rtc_space_handler(acpi_handle handle)
 static inline void acpi_remove_cmos_rtc_space_handler(acpi_handle handle)
 {
 }
+static inline int
+acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
+{
+	*skip = false;
+	return 0;
+}
 #endif
 
 #if IS_ENABLED(CONFIG_X86_ANDROID_TABLETS)
 bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev);
-int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip);
 bool acpi_quirk_skip_gpio_event_handlers(void);
 #else
 static inline bool acpi_quirk_skip_i2c_client_enumeration(struct acpi_device *adev)
 {
 	return false;
 }
-static inline int
-acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
-{
-	*skip = false;
-	return 0;
-}
 static inline bool acpi_quirk_skip_gpio_event_handlers(void)
 {
 	return false;
-- 
2.43.0

[PATCH AUTOSEL 6.8 46/68] ACPI: x86: Add DELL0501 handling to acpi_quirk_skip_serdev_enumeration()

[Sasha Levin]

From: Hans de Goede <hdegoede@redhat.com>

[ Upstream commit 99b572e6136eab69a8c91d72cf8595b256e304b5 ]

Some recent(ish) Dell AIO devices have a backlight controller board
connected to an UART.

This UART has a DELL0501 HID with CID set to PNP0501 so that the UART is
still handled by 8250_pnp.c. Unfortunately there is no separate ACPI device
with an UartSerialBusV2() resource to model the backlight-controller.
This causes the kernel to create a /dev/ttyS0 char-device for the UART
instead of creating an in kernel serdev-controller + serdev-device pair
for a kernel backlight driver.

Use the existing acpi_quirk_skip_serdev_enumeration() mechanism to work
around this by returning skip=true for tty-ctrl parents with a HID
of DELL0501.

Like other cases where the UartSerialBusV2() resource is missing or broken
this will only create the serdev-controller device and the serdev-device
itself will need to be instantiated by platform code.

Unfortunately in this case there is no device for the platform-code
instantiating the serdev-device to bind to. So also create
a platform_device for this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/acpi/x86/utils.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/drivers/acpi/x86/utils.c b/drivers/acpi/x86/utils.c
index 8829a907eee02..90c3d2eab9e99 100644
--- a/drivers/acpi/x86/utils.c
+++ b/drivers/acpi/x86/utils.c
@@ -484,8 +484,28 @@ static int acpi_dmi_skip_serdev_enumeration(struct device *controller_parent, bo
 
 int acpi_quirk_skip_serdev_enumeration(struct device *controller_parent, bool *skip)
 {
+	struct acpi_device *adev = ACPI_COMPANION(controller_parent);
+
 	*skip = false;
 
+	/*
+	 * The DELL0501 ACPI HID represents an UART (CID is set to PNP0501) with
+	 * a backlight-controller attached. There is no separate ACPI device with
+	 * an UartSerialBusV2() resource to model the backlight-controller.
+	 * Set skip to true so that the tty core creates a serdev ctrl device.
+	 * The backlight driver will manually create the serdev client device.
+	 */
+	if (acpi_dev_hid_match(adev, "DELL0501")) {
+		*skip = true;
+		/*
+		 * Create a platform dev for dell-uart-backlight to bind to.
+		 * This is a static device, so no need to store the result.
+		 */
+		platform_device_register_simple("dell-uart-backlight", PLATFORM_DEVID_NONE,
+						NULL, 0);
+		return 0;
+	}
+
 	return acpi_dmi_skip_serdev_enumeration(controller_parent, skip);
 }
 EXPORT_SYMBOL_GPL(acpi_quirk_skip_serdev_enumeration);
-- 
2.43.0

[PATCH AUTOSEL 6.8 47/68] pstore/zone: Add a null pointer check to the psz_kmsg_read

[Sasha Levin]

From: Kunwu Chan <chentao@kylinos.cn>

[ Upstream commit 98bc7e26e14fbb26a6abf97603d59532475e97f8 ]

kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
Link: https://lore.kernel.org/r/20240118100206.213928-1-chentao@kylinos.cn
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/pstore/zone.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/fs/pstore/zone.c b/fs/pstore/zone.c
index 2770746bb7aa1..abca117725c81 100644
--- a/fs/pstore/zone.c
+++ b/fs/pstore/zone.c
@@ -973,6 +973,8 @@ static ssize_t psz_kmsg_read(struct pstore_zone *zone,
 		char *buf = kasprintf(GFP_KERNEL, "%s: Total %d times\n",
 				      kmsg_dump_reason_str(record->reason),
 				      record->count);
+		if (!buf)
+			return -ENOMEM;
 		hlen = strlen(buf);
 		record->buf = krealloc(buf, hlen + size, GFP_KERNEL);
 		if (!record->buf) {
-- 
2.43.0

[PATCH AUTOSEL 6.8 48/68] tools/power x86_energy_perf_policy: Fix file leak in get_pkg_num()

[Sasha Levin]

From: Samasth Norway Ananda <samasth.norway.ananda@oracle.com>

[ Upstream commit f85450f134f0b4ca7e042dc3dc89155656a2299d ]

In function get_pkg_num() if fopen_or_die() succeeds it returns a file
pointer to be used. But fclose() is never called before returning from
the function.

Signed-off-by: Samasth Norway Ananda <samasth.norway.ananda@oracle.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
index 5fd9e594079cf..ebda9c366b2ba 100644
--- a/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
+++ b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c
@@ -1241,6 +1241,7 @@ unsigned int get_pkg_num(int cpu)
 	retval = fscanf(fp, "%d\n", &pkg);
 	if (retval != 1)
 		errx(1, "%s: failed to parse", pathname);
+	fclose(fp);
 	return pkg;
 }
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 49/68] net: pcs: xpcs: Return EINVAL in the internal methods

[Sasha Levin]

From: Serge Semin <fancer.lancer@gmail.com>

[ Upstream commit f5151005d379d9ce42e327fd3b2d2aaef61cda81 ]

In particular the xpcs_soft_reset() and xpcs_do_config() functions
currently return -1 if invalid auto-negotiation mode is specified. That
value might be then passed to the generic kernel subsystems which require
a standard kernel errno value. Even though the erroneous conditions are
very specific (memory corruption or buggy driver implementation) using a
hard-coded -1 literal doesn't seem correct anyway especially when it comes
to passing it higher to the network subsystem or printing to the system
log.  Convert the hard-coded error values to -EINVAL then.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Tested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/pcs/pcs-xpcs.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/net/pcs/pcs-xpcs.c b/drivers/net/pcs/pcs-xpcs.c
index 31f0beba638a2..03d6a6aef77cd 100644
--- a/drivers/net/pcs/pcs-xpcs.c
+++ b/drivers/net/pcs/pcs-xpcs.c
@@ -293,7 +293,7 @@ static int xpcs_soft_reset(struct dw_xpcs *xpcs,
 		dev = MDIO_MMD_VEND2;
 		break;
 	default:
-		return -1;
+		return -EINVAL;
 	}
 
 	ret = xpcs_write(xpcs, dev, MDIO_CTRL1, MDIO_CTRL1_RESET);
@@ -891,7 +891,7 @@ int xpcs_do_config(struct dw_xpcs *xpcs, phy_interface_t interface,
 			return ret;
 		break;
 	default:
-		return -1;
+		return -EINVAL;
 	}
 
 	if (compat->pma_config) {
-- 
2.43.0

[PATCH AUTOSEL 6.8 50/68] dma-direct: Leak pages on dma_set_decrypted() failure

[Sasha Levin]

From: Rick Edgecombe <rick.p.edgecombe@intel.com>

[ Upstream commit b9fa16949d18e06bdf728a560f5c8af56d2bdcaf ]

On TDX it is possible for the untrusted host to cause
set_memory_encrypted() or set_memory_decrypted() to fail such that an
error is returned and the resulting memory is shared. Callers need to
take care to handle these errors to avoid returning decrypted (shared)
memory to the page allocator, which could lead to functional or security
issues.

DMA could free decrypted/shared pages if dma_set_decrypted() fails. This
should be a rare case. Just leak the pages in this case instead of
freeing them.

Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 kernel/dma/direct.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/kernel/dma/direct.c b/kernel/dma/direct.c
index 98b2e192fd696..4d543b1e9d577 100644
--- a/kernel/dma/direct.c
+++ b/kernel/dma/direct.c
@@ -286,7 +286,7 @@ void *dma_direct_alloc(struct device *dev, size_t size,
 	} else {
 		ret = page_address(page);
 		if (dma_set_decrypted(dev, ret, size))
-			goto out_free_pages;
+			goto out_leak_pages;
 	}
 
 	memset(ret, 0, size);
@@ -307,6 +307,8 @@ void *dma_direct_alloc(struct device *dev, size_t size,
 out_free_pages:
 	__dma_direct_free_pages(dev, page, size);
 	return NULL;
+out_leak_pages:
+	return NULL;
 }
 
 void dma_direct_free(struct device *dev, size_t size,
@@ -367,12 +369,11 @@ struct page *dma_direct_alloc_pages(struct device *dev, size_t size,
 
 	ret = page_address(page);
 	if (dma_set_decrypted(dev, ret, size))
-		goto out_free_pages;
+		goto out_leak_pages;
 	memset(ret, 0, size);
 	*dma_handle = phys_to_dma_direct(dev, page_to_phys(page));
 	return page;
-out_free_pages:
-	__dma_direct_free_pages(dev, page, size);
+out_leak_pages:
 	return NULL;
 }
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 51/68] wifi: ath11k: decrease MHI channel buffer length to 8KB

[Sasha Levin]

From: Baochen Qiang <quic_bqiang@quicinc.com>

[ Upstream commit 1cca1bddf9ef080503c15378cecf4877f7510015 ]

Currently buf_len field of ath11k_mhi_config_qca6390 is assigned
with 0, making MHI use a default size, 64KB, to allocate channel
buffers. This is likely to fail in some scenarios where system
memory is highly fragmented and memory compaction or reclaim is
not allowed.

There is a fail report which is caused by it:
kworker/u32:45: page allocation failure: order:4, mode:0x40c00(GFP_NOIO|__GFP_COMP), nodemask=(null),cpuset=/,mems_allowed=0
CPU: 0 PID: 19318 Comm: kworker/u32:45 Not tainted 6.8.0-rc3-1.gae4495f-default #1 openSUSE Tumbleweed (unreleased) 493b6d5b382c603654d7a81fc3c144d59a1dfceb
Workqueue: events_unbound async_run_entry_fn
Call Trace:
 <TASK>
 dump_stack_lvl+0x47/0x60
 warn_alloc+0x13a/0x1b0
 ? srso_alias_return_thunk+0x5/0xfbef5
 ? __alloc_pages_direct_compact+0xab/0x210
 __alloc_pages_slowpath.constprop.0+0xd3e/0xda0
 __alloc_pages+0x32d/0x350
 ? mhi_prepare_channel+0x127/0x2d0 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814]
 __kmalloc_large_node+0x72/0x110
 __kmalloc+0x37c/0x480
 ? mhi_map_single_no_bb+0x77/0xf0 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814]
 ? mhi_prepare_channel+0x127/0x2d0 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814]
 mhi_prepare_channel+0x127/0x2d0 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814]
 __mhi_prepare_for_transfer+0x44/0x80 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814]
 ? __pfx_____mhi_prepare_for_transfer+0x10/0x10 [mhi 40df44e07c05479f7a6e7b90fba9f0e0031a7814]
 device_for_each_child+0x5c/0xa0
 ? __pfx_pci_pm_resume+0x10/0x10
 ath11k_core_resume+0x65/0x100 [ath11k a5094e22d7223135c40d93c8f5321cf09fd85e4e]
 ? srso_alias_return_thunk+0x5/0xfbef5
 ath11k_pci_pm_resume+0x32/0x60 [ath11k_pci 830b7bfc3ea80ebef32e563cafe2cb55e9cc73ec]
 ? srso_alias_return_thunk+0x5/0xfbef5
 dpm_run_callback+0x8c/0x1e0
 device_resume+0x104/0x340
 ? __pfx_dpm_watchdog_handler+0x10/0x10
 async_resume+0x1d/0x30
 async_run_entry_fn+0x32/0x120
 process_one_work+0x168/0x330
 worker_thread+0x2f5/0x410
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xe8/0x120
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x34/0x50
 ? __pfx_kthread+0x10/0x10
 ret_from_fork_asm+0x1b/0x30
 </TASK>

Actually those buffers are used only by QMI target -> host communication.
And for WCN6855 and QCA6390, the largest packet size for that is less
than 6KB. So change buf_len field to 8KB, which results in order 1
allocation if page size is 4KB. In this way, we can at least save some
memory, and as well as decrease the possibility of allocation failure
in those scenarios.

Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.30

Reported-by: Vlastimil Babka <vbabka@suse.cz>
Closes: https://lore.kernel.org/ath11k/96481a45-3547-4d23-ad34-3a8f1d90c1cd@suse.cz/
Signed-off-by: Baochen Qiang <quic_bqiang@quicinc.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Kalle Valo <quic_kvalo@quicinc.com>
Link: https://msgid.link/20240223053111.29170-1-quic_bqiang@quicinc.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/ath/ath11k/mhi.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/wireless/ath/ath11k/mhi.c b/drivers/net/wireless/ath/ath11k/mhi.c
index 6835c14b82cc9..337590236485f 100644
--- a/drivers/net/wireless/ath/ath11k/mhi.c
+++ b/drivers/net/wireless/ath/ath11k/mhi.c
@@ -106,7 +106,7 @@ static struct mhi_controller_config ath11k_mhi_config_qca6390 = {
 	.max_channels = 128,
 	.timeout_ms = 2000,
 	.use_bounce_buf = false,
-	.buf_len = 0,
+	.buf_len = 8192,
 	.num_channels = ARRAY_SIZE(ath11k_mhi_channels_qca6390),
 	.ch_cfg = ath11k_mhi_channels_qca6390,
 	.num_events = ARRAY_SIZE(ath11k_mhi_events_qca6390),
-- 
2.43.0

[PATCH AUTOSEL 6.8 52/68] iommu/arm-smmu-v3: Hold arm_smmu_asid_lock during all of attach_dev

[Sasha Levin]

From: Jason Gunthorpe <jgg@nvidia.com>

[ Upstream commit 9f7c68911579bc15c57d227d021ccd253da2b635 ]

The BTM support wants to be able to change the ASID of any smmu_domain.
When it goes to do this it holds the arm_smmu_asid_lock and iterates over
the target domain's devices list.

During attach of a S1 domain we must ensure that the devices list and
CD are in sync, otherwise we could miss CD updates or a parallel CD update
could push an out of date CD.

This is pretty complicated, and almost works today because
arm_smmu_detach_dev() removes the master from the linked list before
working on the CD entries, preventing parallel update of the CD.

However, it does have an issue where the CD can remain programed while the
domain appears to be unattached. arm_smmu_share_asid() will then not clear
any CD entriess and install its own CD entry with the same ASID
concurrently. This creates a small race window where the IOMMU can see two
ASIDs pointing to different translations.

       CPU0                                   CPU1
arm_smmu_attach_dev()
   arm_smmu_detach_dev()
     spin_lock_irqsave(&smmu_domain->devices_lock, flags);
     list_del(&master->domain_head);
     spin_unlock_irqrestore(&smmu_domain->devices_lock, flags);

				      arm_smmu_mmu_notifier_get()
				       arm_smmu_alloc_shared_cd()
					arm_smmu_share_asid():
                                          // Does nothing due to list_del above
					  arm_smmu_update_ctx_desc_devices()
					  arm_smmu_tlb_inv_asid()
				       arm_smmu_write_ctx_desc()
					 ** Now the ASID is in two CDs
					    with different translation

     arm_smmu_write_ctx_desc(master, IOMMU_NO_PASID, NULL);

Solve this by wrapping most of the attach flow in the
arm_smmu_asid_lock. This locks more than strictly needed to prepare for
the next patch which will reorganize the order of the linked list, STE and
CD changes.

Move arm_smmu_detach_dev() till after we have initialized the domain so
the lock can be held for less time.

Reviewed-by: Michael Shavit <mshavit@google.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Mostafa Saleh <smostafa@google.com>
Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Moritz Fischer <moritzf@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/5-v6-96275f25c39d+2d4-smmuv3_newapi_p1_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 22 ++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 0ffb1cf17e0b2..f3f2e47b6d488 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -2398,8 +2398,6 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 		return -EBUSY;
 	}
 
-	arm_smmu_detach_dev(master);
-
 	mutex_lock(&smmu_domain->init_mutex);
 
 	if (!smmu_domain->smmu) {
@@ -2414,6 +2412,16 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 	if (ret)
 		return ret;
 
+	/*
+	 * Prevent arm_smmu_share_asid() from trying to change the ASID
+	 * of either the old or new domain while we are working on it.
+	 * This allows the STE and the smmu_domain->devices list to
+	 * be inconsistent during this routine.
+	 */
+	mutex_lock(&arm_smmu_asid_lock);
+
+	arm_smmu_detach_dev(master);
+
 	master->domain = smmu_domain;
 
 	/*
@@ -2439,13 +2447,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 			}
 		}
 
-		/*
-		 * Prevent SVA from concurrently modifying the CD or writing to
-		 * the CD entry
-		 */
-		mutex_lock(&arm_smmu_asid_lock);
 		ret = arm_smmu_write_ctx_desc(master, IOMMU_NO_PASID, &smmu_domain->cd);
-		mutex_unlock(&arm_smmu_asid_lock);
 		if (ret) {
 			master->domain = NULL;
 			goto out_list_del;
@@ -2455,13 +2457,15 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 	arm_smmu_install_ste_for_dev(master);
 
 	arm_smmu_enable_ats(master);
-	return 0;
+	goto out_unlock;
 
 out_list_del:
 	spin_lock_irqsave(&smmu_domain->devices_lock, flags);
 	list_del(&master->domain_head);
 	spin_unlock_irqrestore(&smmu_domain->devices_lock, flags);
 
+out_unlock:
+	mutex_unlock(&arm_smmu_asid_lock);
 	return ret;
 }
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 52/68] iommu/arm-smmu-v3: Hold arm_smmu_asid_lock during all of attach_dev

[Sasha Levin]

From: Jason Gunthorpe <jgg@nvidia.com>

[ Upstream commit 9f7c68911579bc15c57d227d021ccd253da2b635 ]

The BTM support wants to be able to change the ASID of any smmu_domain.
When it goes to do this it holds the arm_smmu_asid_lock and iterates over
the target domain's devices list.

During attach of a S1 domain we must ensure that the devices list and
CD are in sync, otherwise we could miss CD updates or a parallel CD update
could push an out of date CD.

This is pretty complicated, and almost works today because
arm_smmu_detach_dev() removes the master from the linked list before
working on the CD entries, preventing parallel update of the CD.

However, it does have an issue where the CD can remain programed while the
domain appears to be unattached. arm_smmu_share_asid() will then not clear
any CD entriess and install its own CD entry with the same ASID
concurrently. This creates a small race window where the IOMMU can see two
ASIDs pointing to different translations.

       CPU0                                   CPU1
arm_smmu_attach_dev()
   arm_smmu_detach_dev()
     spin_lock_irqsave(&smmu_domain->devices_lock, flags);
     list_del(&master->domain_head);
     spin_unlock_irqrestore(&smmu_domain->devices_lock, flags);

				      arm_smmu_mmu_notifier_get()
				       arm_smmu_alloc_shared_cd()
					arm_smmu_share_asid():
                                          // Does nothing due to list_del above
					  arm_smmu_update_ctx_desc_devices()
					  arm_smmu_tlb_inv_asid()
				       arm_smmu_write_ctx_desc()
					 ** Now the ASID is in two CDs
					    with different translation

     arm_smmu_write_ctx_desc(master, IOMMU_NO_PASID, NULL);

Solve this by wrapping most of the attach flow in the
arm_smmu_asid_lock. This locks more than strictly needed to prepare for
the next patch which will reorganize the order of the linked list, STE and
CD changes.

Move arm_smmu_detach_dev() till after we have initialized the domain so
the lock can be held for less time.

Reviewed-by: Michael Shavit <mshavit@google.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Reviewed-by: Mostafa Saleh <smostafa@google.com>
Tested-by: Shameer Kolothum <shameerali.kolothum.thodi@huawei.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Tested-by: Moritz Fischer <moritzf@google.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/5-v6-96275f25c39d+2d4-smmuv3_newapi_p1_jgg@nvidia.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c | 22 ++++++++++++---------
 1 file changed, 13 insertions(+), 9 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
index 0ffb1cf17e0b2..f3f2e47b6d488 100644
--- a/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
+++ b/drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c
@@ -2398,8 +2398,6 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 		return -EBUSY;
 	}
 
-	arm_smmu_detach_dev(master);
-
 	mutex_lock(&smmu_domain->init_mutex);
 
 	if (!smmu_domain->smmu) {
@@ -2414,6 +2412,16 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 	if (ret)
 		return ret;
 
+	/*
+	 * Prevent arm_smmu_share_asid() from trying to change the ASID
+	 * of either the old or new domain while we are working on it.
+	 * This allows the STE and the smmu_domain->devices list to
+	 * be inconsistent during this routine.
+	 */
+	mutex_lock(&arm_smmu_asid_lock);
+
+	arm_smmu_detach_dev(master);
+
 	master->domain = smmu_domain;
 
 	/*
@@ -2439,13 +2447,7 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 			}
 		}
 
-		/*
-		 * Prevent SVA from concurrently modifying the CD or writing to
-		 * the CD entry
-		 */
-		mutex_lock(&arm_smmu_asid_lock);
 		ret = arm_smmu_write_ctx_desc(master, IOMMU_NO_PASID, &smmu_domain->cd);
-		mutex_unlock(&arm_smmu_asid_lock);
 		if (ret) {
 			master->domain = NULL;
 			goto out_list_del;
@@ -2455,13 +2457,15 @@ static int arm_smmu_attach_dev(struct iommu_domain *domain, struct device *dev)
 	arm_smmu_install_ste_for_dev(master);
 
 	arm_smmu_enable_ats(master);
-	return 0;
+	goto out_unlock;
 
 out_list_del:
 	spin_lock_irqsave(&smmu_domain->devices_lock, flags);
 	list_del(&master->domain_head);
 	spin_unlock_irqrestore(&smmu_domain->devices_lock, flags);
 
+out_unlock:
+	mutex_unlock(&arm_smmu_asid_lock);
 	return ret;
 }
 
-- 
2.43.0


_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH AUTOSEL 6.8 53/68] sparc: vdso: Disable UBSAN instrumentation

[Sasha Levin]

From: Kees Cook <keescook@chromium.org>

[ Upstream commit d4be85d068b4418c341f79b654399f7f0891069a ]

The UBSAN instrumentation cannot work in the vDSO since it is executing
in userspace, so disable it in the Makefile. Fixes the build failures
such as:

arch/sparc/vdso/vclock_gettime.c:217: undefined reference to `__ubsan_handle_shift_out_of_bounds'

Acked-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://lore.kernel.org/all/20240224073617.GA2959352@ravnborg.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/sparc/vdso/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/sparc/vdso/Makefile b/arch/sparc/vdso/Makefile
index 7f5eedf1f5e0a..e8aef2c8ae99b 100644
--- a/arch/sparc/vdso/Makefile
+++ b/arch/sparc/vdso/Makefile
@@ -2,6 +2,7 @@
 #
 # Building vDSO images for sparc.
 #
+UBSAN_SANITIZE := n
 
 # files to link into the vdso
 vobjs-y := vdso-note.o vclock_gettime.o
-- 
2.43.0

[PATCH AUTOSEL 6.8 54/68] cpufreq: Don't unregister cpufreq cooling on CPU hotplug

[Sasha Levin]

From: Viresh Kumar <viresh.kumar@linaro.org>

[ Upstream commit c4d61a529db788d2e52654f5b02c8d1de4952c5b ]

Offlining a CPU and bringing it back online is a common operation and it
happens frequently during system suspend/resume, where the non-boot CPUs
are hotplugged out during suspend and brought back at resume.

The cpufreq core already tries to make this path as fast as possible as
the changes are only temporary in nature and full cleanup of resources
isn't required in this case. For example the drivers can implement
online()/offline() callbacks to avoid a lot of tear down of resources.

On similar lines, there is no need to unregister the cpufreq cooling
device during suspend / resume, but only while the policy is getting
removed.

Moreover, unregistering the cpufreq cooling device is resulting in an
unwanted outcome, where the system suspend is eventually aborted in the
process.  Currently, during system suspend the cpufreq core unregisters
the cooling device, which in turn removes a kobject using device_del()
and that generates a notification to the userspace via uevent broadcast.
This causes system suspend to abort in some setups.

This was also earlier reported (indirectly) by Roman [1]. Maybe there is
another way around to fixing that problem properly, but this change
makes sense anyways.

Move the registering and unregistering of the cooling device to policy
creation and removal times onlyy.

Closes: https://bugzilla.kernel.org/show_bug.cgi?id=218521
Reported-by: Manaf Meethalavalappu Pallikunhi <quic_manafm@quicinc.com>
Reported-by: Roman Stratiienko <r.stratiienko@gmail.com>
Link: https://patchwork.kernel.org/project/linux-pm/patch/20220710164026.541466-1-r.stratiienko@gmail.com/ [1]
Tested-by: Manaf Meethalavalappu Pallikunhi <quic_manafm@quicinc.com>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/cpufreq/cpufreq.c | 17 +++++++++++------
 1 file changed, 11 insertions(+), 6 deletions(-)

diff --git a/drivers/cpufreq/cpufreq.c b/drivers/cpufreq/cpufreq.c
index 44db4f59c4cc6..4133c606dacb9 100644
--- a/drivers/cpufreq/cpufreq.c
+++ b/drivers/cpufreq/cpufreq.c
@@ -1571,7 +1571,8 @@ static int cpufreq_online(unsigned int cpu)
 	if (cpufreq_driver->ready)
 		cpufreq_driver->ready(policy);
 
-	if (cpufreq_thermal_control_enabled(cpufreq_driver))
+	/* Register cpufreq cooling only for a new policy */
+	if (new_policy && cpufreq_thermal_control_enabled(cpufreq_driver))
 		policy->cdev = of_cpufreq_cooling_register(policy);
 
 	pr_debug("initialization complete\n");
@@ -1655,11 +1656,6 @@ static void __cpufreq_offline(unsigned int cpu, struct cpufreq_policy *policy)
 	else
 		policy->last_policy = policy->policy;
 
-	if (cpufreq_thermal_control_enabled(cpufreq_driver)) {
-		cpufreq_cooling_unregister(policy->cdev);
-		policy->cdev = NULL;
-	}
-
 	if (has_target())
 		cpufreq_exit_governor(policy);
 
@@ -1720,6 +1716,15 @@ static void cpufreq_remove_dev(struct device *dev, struct subsys_interface *sif)
 		return;
 	}
 
+	/*
+	 * Unregister cpufreq cooling once all the CPUs of the policy are
+	 * removed.
+	 */
+	if (cpufreq_thermal_control_enabled(cpufreq_driver)) {
+		cpufreq_cooling_unregister(policy->cdev);
+		policy->cdev = NULL;
+	}
+
 	/* We did light-weight exit earlier, do full tear down now */
 	if (cpufreq_driver->offline)
 		cpufreq_driver->exit(policy);
-- 
2.43.0

[PATCH AUTOSEL 6.8 55/68] overflow: Allow non-type arg to type_max() and type_min()

[Sasha Levin]

From: Kees Cook <keescook@chromium.org>

[ Upstream commit bd1ebf2467f9c5d157bec7b025e83f8ffdae1318 ]

A common use of type_max() is to find the max for the type of a
variable. Using the pattern type_max(typeof(var)) is needlessly
verbose. Instead, since typeof(type) == type we can just explicitly
call typeof() on the argument to type_max() and type_min(). Add
wrappers for readability.

We can do some replacements right away:

$ git grep '\btype_\(min\|max\)(typeof' | wc -l
11

Link: https://lore.kernel.org/r/20240301062221.work.840-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 include/linux/overflow.h | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

diff --git a/include/linux/overflow.h b/include/linux/overflow.h
index 7b5cf4a5cd191..51af56522915e 100644
--- a/include/linux/overflow.h
+++ b/include/linux/overflow.h
@@ -31,8 +31,10 @@
  * credit to Christian Biere.
  */
 #define __type_half_max(type) ((type)1 << (8*sizeof(type) - 1 - is_signed_type(type)))
-#define type_max(T) ((T)((__type_half_max(T) - 1) + __type_half_max(T)))
-#define type_min(T) ((T)((T)-type_max(T)-(T)1))
+#define __type_max(T) ((T)((__type_half_max(T) - 1) + __type_half_max(T)))
+#define type_max(t)	__type_max(typeof(t))
+#define __type_min(T) ((T)((T)-type_max(T)-(T)1))
+#define type_min(t)	__type_min(typeof(t))
 
 /*
  * Avoids triggering -Wtype-limits compilation warning,
@@ -130,10 +132,10 @@ static inline bool __must_check __must_check_overflow(bool overflow)
 
 #define __overflows_type_constexpr(x, T) (			\
 	is_unsigned_type(typeof(x)) ?				\
-		(x) > type_max(typeof(T)) :			\
+		(x) > type_max(T) :				\
 	is_unsigned_type(typeof(T)) ?				\
-		(x) < 0 || (x) > type_max(typeof(T)) :		\
-	(x) < type_min(typeof(T)) || (x) > type_max(typeof(T)))
+		(x) < 0 || (x) > type_max(T) :			\
+	(x) < type_min(T) || (x) > type_max(T))
 
 #define __overflows_type(x, T)		({	\
 	typeof(T) v = 0;			\
-- 
2.43.0

[PATCH AUTOSEL 6.8 56/68] sh: Fix build with CONFIG_UBSAN=y

[Sasha Levin]

From: Kees Cook <keescook@chromium.org>

[ Upstream commit e36b70fb8c707a0688960184380bc151390d671b ]

The early boot stub for sh had UBSan instrumentation present where it is
not supported. Disable it for this part of the build.

  sh4-linux-ld: arch/sh/boot/compressed/misc.o: in function `zlib_inflate_table':
  misc.c:(.text+0x670): undefined reference to `__ubsan_handle_shift_out_of_bounds'

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202401310416.s8HLiLnC-lkp@intel.com/
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Masahiro Yamada <masahiroy@kernel.org>
Cc: Nicolas Schier <n.schier@avm.de>
Cc:  <linux-sh@vger.kernel.org>
Link: https://lore.kernel.org/r/20240130232717.work.088-kees@kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 arch/sh/boot/compressed/Makefile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/sh/boot/compressed/Makefile b/arch/sh/boot/compressed/Makefile
index b5e29f99c02c8..6c6c791a1d063 100644
--- a/arch/sh/boot/compressed/Makefile
+++ b/arch/sh/boot/compressed/Makefile
@@ -12,6 +12,7 @@ targets := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
            vmlinux.bin.lzma vmlinux.bin.xz vmlinux.bin.lzo $(OBJECTS)
 
 GCOV_PROFILE := n
+UBSAN_SANITIZE := n
 
 #
 # IMAGE_OFFSET is the load offset of the compression loader
-- 
2.43.0

[PATCH AUTOSEL 6.8 57/68] wifi: iwlwifi: Add missing MODULE_FIRMWARE() for *.pnvm

[Sasha Levin]

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 4223675d2b5912060a85e48fd8fee51207e00957 ]

A few models require *.pnvm files while we don't declare them via
MODULE_FIRMWARE().  This resulted in the breakage of WiFi on the
system that relies on the information from modinfo (e.g. openSUSE
installer image).

This patch adds those missing MODULE_FIRMWARE() entries for *.pnvm
files.

type=feature
ticket=none

Link: https://bugzilla.opensuse.org/show_bug.cgi?id=1207553
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://msgid.link/20240228163837.4320-1-tiwai@suse.de
[move to appropriate files]
Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/wireless/intel/iwlwifi/cfg/ax210.c | 6 ++++++
 drivers/net/wireless/intel/iwlwifi/cfg/bz.c    | 2 ++
 2 files changed, 8 insertions(+)

diff --git a/drivers/net/wireless/intel/iwlwifi/cfg/ax210.c b/drivers/net/wireless/intel/iwlwifi/cfg/ax210.c
index 134635c70ce85..73cbb120a49b4 100644
--- a/drivers/net/wireless/intel/iwlwifi/cfg/ax210.c
+++ b/drivers/net/wireless/intel/iwlwifi/cfg/ax210.c
@@ -299,3 +299,9 @@ MODULE_FIRMWARE(IWL_MA_B_HR_B_FW_MODULE_FIRMWARE(IWL_AX210_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL_MA_B_GF_A_FW_MODULE_FIRMWARE(IWL_AX210_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL_MA_B_GF4_A_FW_MODULE_FIRMWARE(IWL_AX210_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL_MA_B_MR_A_FW_MODULE_FIRMWARE(IWL_AX210_UCODE_API_MAX));
+
+MODULE_FIRMWARE("iwlwifi-so-a0-gf-a0.pnvm");
+MODULE_FIRMWARE("iwlwifi-so-a0-gf4-a0.pnvm");
+MODULE_FIRMWARE("iwlwifi-ty-a0-gf-a0.pnvm");
+MODULE_FIRMWARE("iwlwifi-ma-b0-gf-a0.pnvm");
+MODULE_FIRMWARE("iwlwifi-ma-b0-gf4-a0.pnvm");
diff --git a/drivers/net/wireless/intel/iwlwifi/cfg/bz.c b/drivers/net/wireless/intel/iwlwifi/cfg/bz.c
index 82da957adcf6e..1b6249561cd58 100644
--- a/drivers/net/wireless/intel/iwlwifi/cfg/bz.c
+++ b/drivers/net/wireless/intel/iwlwifi/cfg/bz.c
@@ -179,3 +179,5 @@ MODULE_FIRMWARE(IWL_BZ_A_FM_C_MODULE_FIRMWARE(IWL_BZ_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL_BZ_A_FM4_B_MODULE_FIRMWARE(IWL_BZ_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL_GL_B_FM_B_MODULE_FIRMWARE(IWL_BZ_UCODE_API_MAX));
 MODULE_FIRMWARE(IWL_GL_C_FM_C_MODULE_FIRMWARE(IWL_BZ_UCODE_API_MAX));
+
+MODULE_FIRMWARE("iwlwifi-gl-c0-fm-c0.pnvm");
-- 
2.43.0

[PATCH AUTOSEL 6.8 58/68] wifi: cfg80211: check A-MSDU format more carefully

[Sasha Levin]

From: Johannes Berg <johannes.berg@intel.com>

[ Upstream commit 9ad7974856926129f190ffbe3beea78460b3b7cc ]

If it looks like there's another subframe in the A-MSDU
but the header isn't fully there, we can end up reading
data out of bounds, only to discard later. Make this a
bit more careful and check if the subframe header can
even be present.

Reported-by: syzbot+d050d437fe47d479d210@syzkaller.appspotmail.com
Link: https://msgid.link/20240226203405.a731e2c95e38.I82ce7d8c0cc8970ce29d0a39fdc07f1ffc425be4@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/wireless/util.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/net/wireless/util.c b/net/wireless/util.c
index d1ce3bee27973..b9d15f369378b 100644
--- a/net/wireless/util.c
+++ b/net/wireless/util.c
@@ -791,15 +791,19 @@ ieee80211_amsdu_subframe_length(void *field, u8 mesh_flags, u8 hdr_type)
 
 bool ieee80211_is_valid_amsdu(struct sk_buff *skb, u8 mesh_hdr)
 {
-	int offset = 0, remaining, subframe_len, padding;
+	int offset = 0, subframe_len, padding;
 
 	for (offset = 0; offset < skb->len; offset += subframe_len + padding) {
+		int remaining = skb->len - offset;
 		struct {
 		    __be16 len;
 		    u8 mesh_flags;
 		} hdr;
 		u16 len;
 
+		if (sizeof(hdr) > remaining)
+			return false;
+
 		if (skb_copy_bits(skb, offset + 2 * ETH_ALEN, &hdr, sizeof(hdr)) < 0)
 			return false;
 
@@ -807,7 +811,6 @@ bool ieee80211_is_valid_amsdu(struct sk_buff *skb, u8 mesh_hdr)
 						      mesh_hdr);
 		subframe_len = sizeof(struct ethhdr) + len;
 		padding = (4 - subframe_len) & 0x3;
-		remaining = skb->len - offset;
 
 		if (subframe_len > remaining)
 			return false;
@@ -825,7 +828,7 @@ void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
 {
 	unsigned int hlen = ALIGN(extra_headroom, 4);
 	struct sk_buff *frame = NULL;
-	int offset = 0, remaining;
+	int offset = 0;
 	struct {
 		struct ethhdr eth;
 		uint8_t flags;
@@ -839,10 +842,14 @@ void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
 		copy_len = sizeof(hdr);
 
 	while (!last) {
+		int remaining = skb->len - offset;
 		unsigned int subframe_len;
 		int len, mesh_len = 0;
 		u8 padding;
 
+		if (copy_len > remaining)
+			goto purge;
+
 		skb_copy_bits(skb, offset, &hdr, copy_len);
 		if (iftype == NL80211_IFTYPE_MESH_POINT)
 			mesh_len = __ieee80211_get_mesh_hdrlen(hdr.flags);
@@ -852,7 +859,6 @@ void ieee80211_amsdu_to_8023s(struct sk_buff *skb, struct sk_buff_head *list,
 		padding = (4 - subframe_len) & 0x3;
 
 		/* the last MSDU has no padding */
-		remaining = skb->len - offset;
 		if (subframe_len > remaining)
 			goto purge;
 		/* mitigate A-MSDU aggregation injection attacks */
-- 
2.43.0

[PATCH AUTOSEL 6.8 59/68] btrfs: preallocate temporary extent buffer for inode logging when needed

[Sasha Levin]

From: Filipe Manana <fdmanana@suse.com>

[ Upstream commit e383e158ed1b6abc2d2d3e6736d77a46393f80fa ]

When logging an inode and we require to copy items from subvolume leaves
to the log tree, we clone each subvolume leaf and than use that clone to
copy items to the log tree. This is required to avoid possible deadlocks
as stated in commit 796787c978ef ("btrfs: do not modify log tree while
holding a leaf from fs tree locked").

The cloning requires allocating an extent buffer (struct extent_buffer)
and then allocating pages (folios) to attach to the extent buffer. This
may be slow in case we are under memory pressure, and since we are doing
the cloning while holding a read lock on a subvolume leaf, it means we
can be blocking other operations on that leaf for significant periods of
time, which can increase latency on operations like creating other files,
renaming files, etc. Similarly because we're under a log transaction, we
may also cause extra delay on other tasks doing an fsync, because syncing
the log requires waiting for tasks that joined a log transaction to exit
the transaction.

So to improve this, for any inode logging operation that needs to copy
items from a subvolume leaf ("full sync" or "copy everything" bit set
in the inode), preallocate a dummy extent buffer before locking any
extent buffer from the subvolume tree, and even before joining a log
transaction, add it to the log context and then use it when we need to
copy items from a subvolume leaf to the log tree. This avoids making
other operations get extra latency when waiting to lock a subvolume
leaf that is used during inode logging and we are under heavy memory
pressure.

The following test script with bonnie++ was used to test this:

  $ cat test.sh
  #!/bin/bash

  DEV=/dev/sdh
  MNT=/mnt/sdh
  MOUNT_OPTIONS="-o ssd"

  MEMTOTAL_BYTES=`free -b | grep Mem: | awk '{ print $2 }'`
  NR_DIRECTORIES=20
  NR_FILES=20480
  DATASET_SIZE=$((MEMTOTAL_BYTES * 2 / 1048576))
  DIRECTORY_SIZE=$((MEMTOTAL_BYTES * 2 / NR_FILES))
  NR_FILES=$((NR_FILES / 1024))

  echo "performance" | \
      tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor

  umount $DEV &> /dev/null
  mkfs.btrfs -f $MKFS_OPTIONS $DEV
  mount $MOUNT_OPTIONS $DEV $MNT

  bonnie++ -u root -d $MNT \
      -n $NR_FILES:$DIRECTORY_SIZE:$DIRECTORY_SIZE:$NR_DIRECTORIES \
      -r 0 -s $DATASET_SIZE -b

  umount $MNT

The results of this test on a 8G VM running a non-debug kernel (Debian's
default kernel config), were the following.

Before this change:

  Version 2.00a       ------Sequential Output------ --Sequential Input- --Random-
                      -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
  Name:Size etc        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
  debian0       7501M  376k  99  1.4g  96  117m  14 1510k  99  2.5g  95 +++++ +++
  Latency             35068us   24976us    2944ms   30725us   71770us   26152us
  Version 2.00a       ------Sequential Create------ --------Random Create--------
  debian0             -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
  files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
  20:384100:384100/20 20480  32 20480  58 20480  48 20480  39 20480  56 20480  61
  Latency               411ms   11914us     119ms     617ms   10296us     110ms

After this change:

  Version 2.00a       ------Sequential Output------ --Sequential Input- --Random-
                      -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
  Name:Size etc        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
  debian0       7501M  375k  99  1.4g  97  117m  14 1546k  99  2.3g  98 +++++ +++
  Latency             35975us  20945us    2144ms   10297us    2217us    6004us
  Version 2.00a       ------Sequential Create------ --------Random Create--------
  debian0             -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
  files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
  20:384100:384100/20 20480  35 20480  58 20480  48 20480  40 20480  57 20480  59
  Latency               320ms   11237us   77779us     518ms    6470us   86389us

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/btrfs/file.c     | 12 ++++++
 fs/btrfs/tree-log.c | 93 +++++++++++++++++++++++++++------------------
 fs/btrfs/tree-log.h | 25 ++++++++++++
 3 files changed, 94 insertions(+), 36 deletions(-)

diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index 38dfcac476099..77c3b4567b91a 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -1912,6 +1912,8 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 		goto out_release_extents;
 	}
 
+	btrfs_init_log_ctx_scratch_eb(&ctx);
+
 	/*
 	 * We use start here because we will need to wait on the IO to complete
 	 * in btrfs_sync_log, which could require joining a transaction (for
@@ -1931,6 +1933,15 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 	trans->in_fsync = true;
 
 	ret = btrfs_log_dentry_safe(trans, dentry, &ctx);
+	/*
+	 * Scratch eb no longer needed, release before syncing log or commit
+	 * transaction, to avoid holding unnecessary memory during such long
+	 * operations.
+	 */
+	if (ctx.scratch_eb) {
+		free_extent_buffer(ctx.scratch_eb);
+		ctx.scratch_eb = NULL;
+	}
 	btrfs_release_log_ctx_extents(&ctx);
 	if (ret < 0) {
 		/* Fallthrough and commit/free transaction. */
@@ -2006,6 +2017,7 @@ int btrfs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
 
 	ret = btrfs_commit_transaction(trans);
 out:
+	free_extent_buffer(ctx.scratch_eb);
 	ASSERT(list_empty(&ctx.list));
 	ASSERT(list_empty(&ctx.conflict_inodes));
 	err = file_check_and_advance_wb_err(file);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 331fc7429952f..761b13b3d3421 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -3619,6 +3619,30 @@ static int flush_dir_items_batch(struct btrfs_trans_handle *trans,
 	return ret;
 }
 
+static int clone_leaf(struct btrfs_path *path, struct btrfs_log_ctx *ctx)
+{
+	const int slot = path->slots[0];
+
+	if (ctx->scratch_eb) {
+		copy_extent_buffer_full(ctx->scratch_eb, path->nodes[0]);
+	} else {
+		ctx->scratch_eb = btrfs_clone_extent_buffer(path->nodes[0]);
+		if (!ctx->scratch_eb)
+			return -ENOMEM;
+	}
+
+	btrfs_release_path(path);
+	path->nodes[0] = ctx->scratch_eb;
+	path->slots[0] = slot;
+	/*
+	 * Add extra ref to scratch eb so that it is not freed when callers
+	 * release the path, so we can reuse it later if needed.
+	 */
+	atomic_inc(&ctx->scratch_eb->refs);
+
+	return 0;
+}
+
 static int process_dir_items_leaf(struct btrfs_trans_handle *trans,
 				  struct btrfs_inode *inode,
 				  struct btrfs_path *path,
@@ -3633,23 +3657,20 @@ static int process_dir_items_leaf(struct btrfs_trans_handle *trans,
 	bool last_found = false;
 	int batch_start = 0;
 	int batch_size = 0;
-	int i;
+	int ret;
 
 	/*
 	 * We need to clone the leaf, release the read lock on it, and use the
 	 * clone before modifying the log tree. See the comment at copy_items()
 	 * about why we need to do this.
 	 */
-	src = btrfs_clone_extent_buffer(path->nodes[0]);
-	if (!src)
-		return -ENOMEM;
+	ret = clone_leaf(path, ctx);
+	if (ret < 0)
+		return ret;
 
-	i = path->slots[0];
-	btrfs_release_path(path);
-	path->nodes[0] = src;
-	path->slots[0] = i;
+	src = path->nodes[0];
 
-	for (; i < nritems; i++) {
+	for (int i = path->slots[0]; i < nritems; i++) {
 		struct btrfs_dir_item *di;
 		struct btrfs_key key;
 		int ret;
@@ -4259,17 +4280,16 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
 			       struct btrfs_path *dst_path,
 			       struct btrfs_path *src_path,
 			       int start_slot, int nr, int inode_only,
-			       u64 logged_isize)
+			       u64 logged_isize, struct btrfs_log_ctx *ctx)
 {
 	struct btrfs_root *log = inode->root->log_root;
 	struct btrfs_file_extent_item *extent;
 	struct extent_buffer *src;
-	int ret = 0;
+	int ret;
 	struct btrfs_key *ins_keys;
 	u32 *ins_sizes;
 	struct btrfs_item_batch batch;
 	char *ins_data;
-	int i;
 	int dst_index;
 	const bool skip_csum = (inode->flags & BTRFS_INODE_NODATASUM);
 	const u64 i_size = i_size_read(&inode->vfs_inode);
@@ -4302,14 +4322,11 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
 	 * while the other is holding the delayed node's mutex and wants to
 	 * write lock the same subvolume leaf for flushing delayed items.
 	 */
-	src = btrfs_clone_extent_buffer(src_path->nodes[0]);
-	if (!src)
-		return -ENOMEM;
+	ret = clone_leaf(src_path, ctx);
+	if (ret < 0)
+		return ret;
 
-	i = src_path->slots[0];
-	btrfs_release_path(src_path);
-	src_path->nodes[0] = src;
-	src_path->slots[0] = i;
+	src = src_path->nodes[0];
 
 	ins_data = kmalloc(nr * sizeof(struct btrfs_key) +
 			   nr * sizeof(u32), GFP_NOFS);
@@ -4324,7 +4341,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
 	batch.nr = 0;
 
 	dst_index = 0;
-	for (i = 0; i < nr; i++) {
+	for (int i = 0; i < nr; i++) {
 		const int src_slot = start_slot + i;
 		struct btrfs_root *csum_root;
 		struct btrfs_ordered_sum *sums;
@@ -4431,7 +4448,7 @@ static noinline int copy_items(struct btrfs_trans_handle *trans,
 		goto out;
 
 	dst_index = 0;
-	for (i = 0; i < nr; i++) {
+	for (int i = 0; i < nr; i++) {
 		const int src_slot = start_slot + i;
 		const int dst_slot = dst_path->slots[0] + dst_index;
 		struct btrfs_key key;
@@ -4704,7 +4721,8 @@ static int log_one_extent(struct btrfs_trans_handle *trans,
  */
 static int btrfs_log_prealloc_extents(struct btrfs_trans_handle *trans,
 				      struct btrfs_inode *inode,
-				      struct btrfs_path *path)
+				      struct btrfs_path *path,
+				      struct btrfs_log_ctx *ctx)
 {
 	struct btrfs_root *root = inode->root;
 	struct btrfs_key key;
@@ -4770,7 +4788,7 @@ static int btrfs_log_prealloc_extents(struct btrfs_trans_handle *trans,
 		if (slot >= btrfs_header_nritems(leaf)) {
 			if (ins_nr > 0) {
 				ret = copy_items(trans, inode, dst_path, path,
-						 start_slot, ins_nr, 1, 0);
+						 start_slot, ins_nr, 1, 0, ctx);
 				if (ret < 0)
 					goto out;
 				ins_nr = 0;
@@ -4820,7 +4838,7 @@ static int btrfs_log_prealloc_extents(struct btrfs_trans_handle *trans,
 	}
 	if (ins_nr > 0)
 		ret = copy_items(trans, inode, dst_path, path,
-				 start_slot, ins_nr, 1, 0);
+				 start_slot, ins_nr, 1, 0, ctx);
 out:
 	btrfs_release_path(path);
 	btrfs_free_path(dst_path);
@@ -4899,7 +4917,7 @@ static int btrfs_log_changed_extents(struct btrfs_trans_handle *trans,
 	write_unlock(&tree->lock);
 
 	if (!ret)
-		ret = btrfs_log_prealloc_extents(trans, inode, path);
+		ret = btrfs_log_prealloc_extents(trans, inode, path, ctx);
 	if (ret)
 		return ret;
 
@@ -4980,7 +4998,8 @@ static int logged_inode_size(struct btrfs_root *log, struct btrfs_inode *inode,
 static int btrfs_log_all_xattrs(struct btrfs_trans_handle *trans,
 				struct btrfs_inode *inode,
 				struct btrfs_path *path,
-				struct btrfs_path *dst_path)
+				struct btrfs_path *dst_path,
+				struct btrfs_log_ctx *ctx)
 {
 	struct btrfs_root *root = inode->root;
 	int ret;
@@ -5009,7 +5028,7 @@ static int btrfs_log_all_xattrs(struct btrfs_trans_handle *trans,
 		if (slot >= nritems) {
 			if (ins_nr > 0) {
 				ret = copy_items(trans, inode, dst_path, path,
-						 start_slot, ins_nr, 1, 0);
+						 start_slot, ins_nr, 1, 0, ctx);
 				if (ret < 0)
 					return ret;
 				ins_nr = 0;
@@ -5035,7 +5054,7 @@ static int btrfs_log_all_xattrs(struct btrfs_trans_handle *trans,
 	}
 	if (ins_nr > 0) {
 		ret = copy_items(trans, inode, dst_path, path,
-				 start_slot, ins_nr, 1, 0);
+				 start_slot, ins_nr, 1, 0, ctx);
 		if (ret < 0)
 			return ret;
 	}
@@ -5847,7 +5866,7 @@ static int copy_inode_items_to_log(struct btrfs_trans_handle *trans,
 				}
 				ret = copy_items(trans, inode, dst_path, path,
 						 ins_start_slot, ins_nr,
-						 inode_only, logged_isize);
+						 inode_only, logged_isize, ctx);
 				if (ret < 0)
 					return ret;
 				ins_nr = 0;
@@ -5866,7 +5885,7 @@ static int copy_inode_items_to_log(struct btrfs_trans_handle *trans,
 				goto next_slot;
 			ret = copy_items(trans, inode, dst_path, path,
 					 ins_start_slot,
-					 ins_nr, inode_only, logged_isize);
+					 ins_nr, inode_only, logged_isize, ctx);
 			if (ret < 0)
 				return ret;
 			ins_nr = 0;
@@ -5883,7 +5902,7 @@ static int copy_inode_items_to_log(struct btrfs_trans_handle *trans,
 		}
 
 		ret = copy_items(trans, inode, dst_path, path, ins_start_slot,
-				 ins_nr, inode_only, logged_isize);
+				 ins_nr, inode_only, logged_isize, ctx);
 		if (ret < 0)
 			return ret;
 		ins_nr = 1;
@@ -5898,7 +5917,7 @@ static int copy_inode_items_to_log(struct btrfs_trans_handle *trans,
 		if (ins_nr) {
 			ret = copy_items(trans, inode, dst_path, path,
 					 ins_start_slot, ins_nr, inode_only,
-					 logged_isize);
+					 logged_isize, ctx);
 			if (ret < 0)
 				return ret;
 			ins_nr = 0;
@@ -5923,7 +5942,7 @@ static int copy_inode_items_to_log(struct btrfs_trans_handle *trans,
 	}
 	if (ins_nr) {
 		ret = copy_items(trans, inode, dst_path, path, ins_start_slot,
-				 ins_nr, inode_only, logged_isize);
+				 ins_nr, inode_only, logged_isize, ctx);
 		if (ret)
 			return ret;
 	}
@@ -5934,7 +5953,7 @@ static int copy_inode_items_to_log(struct btrfs_trans_handle *trans,
 		 * lock the same leaf with btrfs_log_prealloc_extents() below.
 		 */
 		btrfs_release_path(path);
-		ret = btrfs_log_prealloc_extents(trans, inode, dst_path);
+		ret = btrfs_log_prealloc_extents(trans, inode, dst_path, ctx);
 	}
 
 	return ret;
@@ -6526,7 +6545,7 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
 
 	btrfs_release_path(path);
 	btrfs_release_path(dst_path);
-	ret = btrfs_log_all_xattrs(trans, inode, path, dst_path);
+	ret = btrfs_log_all_xattrs(trans, inode, path, dst_path, ctx);
 	if (ret)
 		goto out_unlock;
 	xattrs_logged = true;
@@ -6553,7 +6572,7 @@ static int btrfs_log_inode(struct btrfs_trans_handle *trans,
 		 * BTRFS_INODE_COPY_EVERYTHING set.
 		 */
 		if (!xattrs_logged && inode->logged_trans < trans->transid) {
-			ret = btrfs_log_all_xattrs(trans, inode, path, dst_path);
+			ret = btrfs_log_all_xattrs(trans, inode, path, dst_path, ctx);
 			if (ret)
 				goto out_unlock;
 			btrfs_release_path(path);
@@ -7502,6 +7521,7 @@ void btrfs_log_new_name(struct btrfs_trans_handle *trans,
 
 	btrfs_init_log_ctx(&ctx, &inode->vfs_inode);
 	ctx.logging_new_name = true;
+	btrfs_init_log_ctx_scratch_eb(&ctx);
 	/*
 	 * We don't care about the return value. If we fail to log the new name
 	 * then we know the next attempt to sync the log will fallback to a full
@@ -7510,6 +7530,7 @@ void btrfs_log_new_name(struct btrfs_trans_handle *trans,
 	 * inconsistent state after a rename operation.
 	 */
 	btrfs_log_inode_parent(trans, inode, parent, LOG_INODE_EXISTS, &ctx);
+	free_extent_buffer(ctx.scratch_eb);
 	ASSERT(list_empty(&ctx.conflict_inodes));
 out:
 	/*
diff --git a/fs/btrfs/tree-log.h b/fs/btrfs/tree-log.h
index a550a8a375cd1..af219e8840d28 100644
--- a/fs/btrfs/tree-log.h
+++ b/fs/btrfs/tree-log.h
@@ -36,6 +36,15 @@ struct btrfs_log_ctx {
 	struct list_head conflict_inodes;
 	int num_conflict_inodes;
 	bool logging_conflict_inodes;
+	/*
+	 * Used for fsyncs that need to copy items from the subvolume tree to
+	 * the log tree (full sync flag set or copy everything flag set) to
+	 * avoid allocating a temporary extent buffer while holding a lock on
+	 * an extent buffer of the subvolume tree and under the log transaction.
+	 * Also helps to avoid allocating and freeing a temporary extent buffer
+	 * in case we need to process multiple leaves from the subvolume tree.
+	 */
+	struct extent_buffer *scratch_eb;
 };
 
 static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
@@ -53,6 +62,22 @@ static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
 	INIT_LIST_HEAD(&ctx->conflict_inodes);
 	ctx->num_conflict_inodes = 0;
 	ctx->logging_conflict_inodes = false;
+	ctx->scratch_eb = NULL;
+}
+
+static inline void btrfs_init_log_ctx_scratch_eb(struct btrfs_log_ctx *ctx)
+{
+	struct btrfs_inode *inode = BTRFS_I(ctx->inode);
+
+	if (!test_bit(BTRFS_INODE_NEEDS_FULL_SYNC, &inode->runtime_flags) &&
+	    !test_bit(BTRFS_INODE_COPY_EVERYTHING, &inode->runtime_flags))
+		return;
+
+	/*
+	 * Don't care about allocation failure. This is just for optimization,
+	 * if we fail to allocate here, we will try again later if needed.
+	 */
+	ctx->scratch_eb = alloc_dummy_extent_buffer(inode->root->fs_info, 0);
 }
 
 static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx)
-- 
2.43.0

[PATCH AUTOSEL 6.8 60/68] btrfs: handle chunk tree lookup error in btrfs_relocate_sys_chunks()

[Sasha Levin]

From: David Sterba <dsterba@suse.com>

[ Upstream commit 7411055db5ce64f836aaffd422396af0075fdc99 ]

The unhandled case in btrfs_relocate_sys_chunks() loop is a corruption,
as it could be caused only by two impossible conditions:

- at first the search key is set up to look for a chunk tree item, with
  offset -1, this is an inexact search and the key->offset will contain
  the correct offset upon a successful search, a valid chunk tree item
  cannot have an offset -1

- after first successful search, the found_key corresponds to a chunk
  item, the offset is decremented by 1 before the next loop, it's
  impossible to find a chunk item there due to alignment and size
  constraints

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/btrfs/volumes.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c
index d67785be2c778..6aae92e4b4240 100644
--- a/fs/btrfs/volumes.c
+++ b/fs/btrfs/volumes.c
@@ -3393,7 +3393,17 @@ static int btrfs_relocate_sys_chunks(struct btrfs_fs_info *fs_info)
 			mutex_unlock(&fs_info->reclaim_bgs_lock);
 			goto error;
 		}
-		BUG_ON(ret == 0); /* Corruption */
+		if (ret == 0) {
+			/*
+			 * On the first search we would find chunk tree with
+			 * offset -1, which is not possible. On subsequent
+			 * loops this would find an existing item on an invalid
+			 * offset (one less than the previous one, wrong
+			 * alignment and size).
+			 */
+			ret = -EUCLEAN;
+			goto error;
+		}
 
 		ret = btrfs_previous_item(chunk_root, path, key.objectid,
 					  key.type);
-- 
2.43.0

[PATCH AUTOSEL 6.8 61/68] btrfs: export: handle invalid inode or root reference in btrfs_get_parent()

[Sasha Levin]

From: David Sterba <dsterba@suse.com>

[ Upstream commit 26b66d1d366a375745755ca7365f67110bbf6bd5 ]

The get_parent handler looks up a parent of a given dentry, this can be
either a subvolume or a directory. The search is set up with offset -1
but it's never expected to find such item, as it would break allowed
range of inode number or a root id. This means it's a corruption (ext4
also returns this error code).

Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Anand Jain <anand.jain@oracle.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/btrfs/export.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/export.c b/fs/btrfs/export.c
index 744a02b7fd671..203e5964c9b0f 100644
--- a/fs/btrfs/export.c
+++ b/fs/btrfs/export.c
@@ -174,8 +174,15 @@ struct dentry *btrfs_get_parent(struct dentry *child)
 	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
 	if (ret < 0)
 		goto fail;
+	if (ret == 0) {
+		/*
+		 * Key with offset of -1 found, there would have to exist an
+		 * inode with such number or a root with such id.
+		 */
+		ret = -EUCLEAN;
+		goto fail;
+	}
 
-	BUG_ON(ret == 0); /* Key with offset of -1 found */
 	if (path->slots[0] == 0) {
 		ret = -ENOENT;
 		goto fail;
-- 
2.43.0

[PATCH AUTOSEL 6.8 62/68] btrfs: send: handle path ref underflow in header iterate_inode_ref()

[Sasha Levin]

From: David Sterba <dsterba@suse.com>

[ Upstream commit 3c6ee34c6f9cd12802326da26631232a61743501 ]

Change BUG_ON to proper error handling if building the path buffer
fails. The pointers are not printed so we don't accidentally leak kernel
addresses.

Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/btrfs/send.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index e48a063ef0851..e9bafc73c621e 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -1070,7 +1070,15 @@ static int iterate_inode_ref(struct btrfs_root *root, struct btrfs_path *path,
 					ret = PTR_ERR(start);
 					goto out;
 				}
-				BUG_ON(start < p->buf);
+				if (unlikely(start < p->buf)) {
+					btrfs_err(root->fs_info,
+			"send: path ref buffer underflow for key (%llu %u %llu)",
+						  found_key->objectid,
+						  found_key->type,
+						  found_key->offset);
+					ret = -EINVAL;
+					goto out;
+				}
 			}
 			p->start = start;
 		} else {
-- 
2.43.0

[PATCH AUTOSEL 6.8 63/68] ice: use relative VSI index for VFs instead of PF VSI number

[Sasha Levin]

From: Jacob Keller <jacob.e.keller@intel.com>

[ Upstream commit 11fbb1bfb5bc8c98b2d7db9da332b5e568f4aaab ]

When initializing over virtchnl, the PF is required to pass a VSI ID to the
VF as part of its capabilities exchange. The VF driver reports this value
back to the PF in a variety of commands. The PF driver validates that this
value matches the value it sent to the VF.

Some hardware families such as the E700 series could use this value when
reading RSS registers or communicating directly with firmware over the
Admin Queue.

However, E800 series hardware does not support any of these interfaces and
the VF's only use for this value is to report it back to the PF. Thus,
there is no requirement that this value be an actual VSI ID value of any
kind.

The PF driver already does not trust that the VF sends it a real VSI ID.
The VSI structure is always looked up from the VF structure. The PF does
validate that the VSI ID provided matches a VSI associated with the VF, but
otherwise does not use the VSI ID for any purpose.

Instead of reporting the VSI number relative to the PF space, report a
fixed value of 1. When communicating with the VF over virtchnl, validate
that the VSI number is returned appropriately.

This avoids leaking information about the firmware of the PF state.
Currently the ice driver only supplies a VF with a single VSI. However, it
appears that virtchnl has some support for allowing multiple VSIs. I did
not attempt to implement this. However, space is left open to allow further
relative indexes if additional VSIs are provided in future feature
development. For this reason, keep the ice_vc_isvalid_vsi_id function in
place to allow extending it for multiple VSIs in the future.

This change will also simplify handling of live migration in a future
series. Since we no longer will provide a real VSI number to the VF, there
will be no need to keep track of this number when migrating to a new host.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/intel/ice/ice_virtchnl.c | 9 ++-------
 drivers/net/ethernet/intel/ice/ice_virtchnl.h | 9 +++++++++
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.c b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
index 6f2328a049bf1..7b550d7d96b68 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
@@ -499,7 +499,7 @@ static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg)
 	vfres->rss_lut_size = ICE_LUT_VSI_SIZE;
 	vfres->max_mtu = ice_vc_get_max_frame_size(vf);
 
-	vfres->vsi_res[0].vsi_id = vf->lan_vsi_num;
+	vfres->vsi_res[0].vsi_id = ICE_VF_VSI_ID;
 	vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
 	vfres->vsi_res[0].num_queue_pairs = vsi->num_txq;
 	ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
@@ -545,12 +545,7 @@ static void ice_vc_reset_vf_msg(struct ice_vf *vf)
  */
 bool ice_vc_isvalid_vsi_id(struct ice_vf *vf, u16 vsi_id)
 {
-	struct ice_pf *pf = vf->pf;
-	struct ice_vsi *vsi;
-
-	vsi = ice_find_vsi(pf, vsi_id);
-
-	return (vsi && (vsi->vf == vf));
+	return vsi_id == ICE_VF_VSI_ID;
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.h b/drivers/net/ethernet/intel/ice/ice_virtchnl.h
index 60dfbe05980aa..3a41158691532 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl.h
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.h
@@ -19,6 +19,15 @@
 #define ICE_MAX_MACADDR_PER_VF		18
 #define ICE_FLEX_DESC_RXDID_MAX_NUM	64
 
+/* VFs only get a single VSI. For ice hardware, the VF does not need to know
+ * its VSI index. However, the virtchnl interface requires a VSI number,
+ * mainly due to legacy hardware.
+ *
+ * Since the VF doesn't need this information, report a static value to the VF
+ * instead of leaking any information about the PF or hardware setup.
+ */
+#define ICE_VF_VSI_ID	1
+
 struct ice_virtchnl_ops {
 	int (*get_ver_msg)(struct ice_vf *vf, u8 *msg);
 	int (*get_vf_res_msg)(struct ice_vf *vf, u8 *msg);
-- 
2.43.0

[Intel-wired-lan] [PATCH AUTOSEL 6.8 63/68] ice: use relative VSI index for VFs instead of PF VSI number

[Sasha Levin]

From: Jacob Keller <jacob.e.keller@intel.com>

[ Upstream commit 11fbb1bfb5bc8c98b2d7db9da332b5e568f4aaab ]

When initializing over virtchnl, the PF is required to pass a VSI ID to the
VF as part of its capabilities exchange. The VF driver reports this value
back to the PF in a variety of commands. The PF driver validates that this
value matches the value it sent to the VF.

Some hardware families such as the E700 series could use this value when
reading RSS registers or communicating directly with firmware over the
Admin Queue.

However, E800 series hardware does not support any of these interfaces and
the VF's only use for this value is to report it back to the PF. Thus,
there is no requirement that this value be an actual VSI ID value of any
kind.

The PF driver already does not trust that the VF sends it a real VSI ID.
The VSI structure is always looked up from the VF structure. The PF does
validate that the VSI ID provided matches a VSI associated with the VF, but
otherwise does not use the VSI ID for any purpose.

Instead of reporting the VSI number relative to the PF space, report a
fixed value of 1. When communicating with the VF over virtchnl, validate
that the VSI number is returned appropriately.

This avoids leaking information about the firmware of the PF state.
Currently the ice driver only supplies a VF with a single VSI. However, it
appears that virtchnl has some support for allowing multiple VSIs. I did
not attempt to implement this. However, space is left open to allow further
relative indexes if additional VSIs are provided in future feature
development. For this reason, keep the ice_vc_isvalid_vsi_id function in
place to allow extending it for multiple VSIs in the future.

This change will also simplify handling of live migration in a future
series. Since we no longer will provide a real VSI number to the VF, there
will be no need to keep track of this number when migrating to a new host.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Tested-by: Rafal Romanowski <rafal.romanowski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/intel/ice/ice_virtchnl.c | 9 ++-------
 drivers/net/ethernet/intel/ice/ice_virtchnl.h | 9 +++++++++
 2 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.c b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
index 6f2328a049bf1..7b550d7d96b68 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.c
@@ -499,7 +499,7 @@ static int ice_vc_get_vf_res_msg(struct ice_vf *vf, u8 *msg)
 	vfres->rss_lut_size = ICE_LUT_VSI_SIZE;
 	vfres->max_mtu = ice_vc_get_max_frame_size(vf);
 
-	vfres->vsi_res[0].vsi_id = vf->lan_vsi_num;
+	vfres->vsi_res[0].vsi_id = ICE_VF_VSI_ID;
 	vfres->vsi_res[0].vsi_type = VIRTCHNL_VSI_SRIOV;
 	vfres->vsi_res[0].num_queue_pairs = vsi->num_txq;
 	ether_addr_copy(vfres->vsi_res[0].default_mac_addr,
@@ -545,12 +545,7 @@ static void ice_vc_reset_vf_msg(struct ice_vf *vf)
  */
 bool ice_vc_isvalid_vsi_id(struct ice_vf *vf, u16 vsi_id)
 {
-	struct ice_pf *pf = vf->pf;
-	struct ice_vsi *vsi;
-
-	vsi = ice_find_vsi(pf, vsi_id);
-
-	return (vsi && (vsi->vf == vf));
+	return vsi_id == ICE_VF_VSI_ID;
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl.h b/drivers/net/ethernet/intel/ice/ice_virtchnl.h
index 60dfbe05980aa..3a41158691532 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl.h
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl.h
@@ -19,6 +19,15 @@
 #define ICE_MAX_MACADDR_PER_VF		18
 #define ICE_FLEX_DESC_RXDID_MAX_NUM	64
 
+/* VFs only get a single VSI. For ice hardware, the VF does not need to know
+ * its VSI index. However, the virtchnl interface requires a VSI number,
+ * mainly due to legacy hardware.
+ *
+ * Since the VF doesn't need this information, report a static value to the VF
+ * instead of leaking any information about the PF or hardware setup.
+ */
+#define ICE_VF_VSI_ID	1
+
 struct ice_virtchnl_ops {
 	int (*get_ver_msg)(struct ice_vf *vf, u8 *msg);
 	int (*get_vf_res_msg)(struct ice_vf *vf, u8 *msg);
-- 
2.43.0

[PATCH AUTOSEL 6.8 64/68] net/smc: reduce rtnl pressure in smc_pnet_create_pnetids_list()

[Sasha Levin]

From: Eric Dumazet <edumazet@google.com>

[ Upstream commit 00af2aa93b76b1bade471ad0d0525d4d29ca5cc0 ]

Many syzbot reports show extreme rtnl pressure, and many of them hint
that smc acquires rtnl in netns creation for no good reason [1]

This patch returns early from smc_pnet_net_init()
if there is no netdevice yet.

I am not even sure why smc_pnet_create_pnetids_list() even exists,
because smc_pnet_netdev_event() is also calling
smc_pnet_add_base_pnetid() when handling NETDEV_UP event.

[1] extract of typical syzbot reports

2 locks held by syz-executor.3/12252:
  #0: ffffffff8f369610 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.4/12253:
  #0: ffffffff8f369610 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.1/12257:
  #0: ffffffff8f369610 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.2/12261:
  #0: ffffffff8f369610 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.0/12265:
  #0: ffffffff8f369610 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.3/12268:
  #0: ffffffff8f369610 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.4/12271:
  #0: ffffffff8f369610 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.1/12274:
  #0: ffffffff8f369610 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878
2 locks held by syz-executor.2/12280:
  #0: ffffffff8f369610 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c7/0x7b0 net/core/net_namespace.c:491
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_create_pnetids_list net/smc/smc_pnet.c:809 [inline]
  #1: ffffffff8f375b88 (rtnl_mutex){+.+.}-{3:3}, at: smc_pnet_net_init+0x10a/0x1e0 net/smc/smc_pnet.c:878

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Wenjia Zhang <wenjia@linux.ibm.com>
Cc: Jan Karcher <jaka@linux.ibm.com>
Cc: "D. Wythe" <alibuda@linux.alibaba.com>
Cc: Tony Lu <tonylu@linux.alibaba.com>
Cc: Wen Gu <guwen@linux.alibaba.com>
Reviewed-by: Wenjia Zhang <wenjia@linux.ibm.com>
Link: https://lore.kernel.org/r/20240302100744.3868021-1-edumazet@google.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/smc/smc_pnet.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/net/smc/smc_pnet.c b/net/smc/smc_pnet.c
index 9f2c58c5a86b7..2adb92b8c4699 100644
--- a/net/smc/smc_pnet.c
+++ b/net/smc/smc_pnet.c
@@ -806,6 +806,16 @@ static void smc_pnet_create_pnetids_list(struct net *net)
 	u8 ndev_pnetid[SMC_MAX_PNETID_LEN];
 	struct net_device *dev;
 
+	/* Newly created netns do not have devices.
+	 * Do not even acquire rtnl.
+	 */
+	if (list_empty(&net->dev_base_head))
+		return;
+
+	/* Note: This might not be needed, because smc_pnet_netdev_event()
+	 * is also calling smc_pnet_add_base_pnetid() when handling
+	 * NETDEV_UP event.
+	 */
 	rtnl_lock();
 	for_each_netdev(net, dev)
 		smc_pnet_add_base_pnetid(net, dev, ndev_pnetid);
-- 
2.43.0

[PATCH AUTOSEL 6.8 65/68] netdev: let netlink core handle -EMSGSIZE errors

[Sasha Levin]

From: Jakub Kicinski <kuba@kernel.org>

[ Upstream commit 0b11b1c5c320555483e8a94c44549db24c289987 ]

Previous change added -EMSGSIZE handling to af_netlink, we don't
have to hide these errors any longer.

Theoretically the error handling changes from:
 if (err == -EMSGSIZE)
to
 if (err == -EMSGSIZE && skb->len)

everywhere, but in practice it doesn't matter.
All messages fit into NLMSG_GOODSIZE, so overflow of an empty
skb cannot happen.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/core/netdev-genl.c    | 15 +++------------
 net/core/page_pool_user.c |  2 --
 2 files changed, 3 insertions(+), 14 deletions(-)

diff --git a/net/core/netdev-genl.c b/net/core/netdev-genl.c
index fd98936da3aec..918b109e0cf40 100644
--- a/net/core/netdev-genl.c
+++ b/net/core/netdev-genl.c
@@ -152,10 +152,7 @@ int netdev_nl_dev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
 	}
 	rtnl_unlock();
 
-	if (err != -EMSGSIZE)
-		return err;
-
-	return skb->len;
+	return err;
 }
 
 static int
@@ -287,10 +284,7 @@ int netdev_nl_napi_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
 	}
 	rtnl_unlock();
 
-	if (err != -EMSGSIZE)
-		return err;
-
-	return skb->len;
+	return err;
 }
 
 static int
@@ -463,10 +457,7 @@ int netdev_nl_queue_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb)
 	}
 	rtnl_unlock();
 
-	if (err != -EMSGSIZE)
-		return err;
-
-	return skb->len;
+	return err;
 }
 
 static int netdev_genl_netdevice_event(struct notifier_block *nb,
diff --git a/net/core/page_pool_user.c b/net/core/page_pool_user.c
index 278294aca66ab..3a3277ba167b1 100644
--- a/net/core/page_pool_user.c
+++ b/net/core/page_pool_user.c
@@ -103,8 +103,6 @@ netdev_nl_page_pool_get_dump(struct sk_buff *skb, struct netlink_callback *cb,
 	mutex_unlock(&page_pools_lock);
 	rtnl_unlock();
 
-	if (skb->len && err == -EMSGSIZE)
-		return skb->len;
 	return err;
 }
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 66/68] Bluetooth: btintel: Fix null ptr deref in btintel_read_version

[Sasha Levin]

From: Edward Adam Davis <eadavis@qq.com>

[ Upstream commit b79e040910101b020931ba0c9a6b77e81ab7f645 ]

If hci_cmd_sync_complete() is triggered and skb is NULL, then
hdev->req_skb is NULL, which will cause this issue.

Reported-and-tested-by: syzbot+830d9e3fa61968246abd@syzkaller.appspotmail.com
Signed-off-by: Edward Adam Davis <eadavis@qq.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/bluetooth/btintel.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btintel.c b/drivers/bluetooth/btintel.c
index cdc5c08824a0a..e5b043d962073 100644
--- a/drivers/bluetooth/btintel.c
+++ b/drivers/bluetooth/btintel.c
@@ -435,7 +435,7 @@ int btintel_read_version(struct hci_dev *hdev, struct intel_version *ver)
 	struct sk_buff *skb;
 
 	skb = __hci_cmd_sync(hdev, 0xfc05, 0, NULL, HCI_CMD_TIMEOUT);
-	if (IS_ERR(skb)) {
+	if (IS_ERR_OR_NULL(skb)) {
 		bt_dev_err(hdev, "Reading Intel version information failed (%ld)",
 			   PTR_ERR(skb));
 		return PTR_ERR(skb);
-- 
2.43.0

[PATCH AUTOSEL 6.8 67/68] Bluetooth: btmtk: Add MODULE_FIRMWARE() for MT7922

[Sasha Levin]

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 3e465a07cdf444140f16bc57025c23fcafdde997 ]

Since dracut refers to the module info for defining the required
firmware files and btmtk driver doesn't provide the firmware info for
MT7922, the generate initrd misses the firmware, resulting in the
broken Bluetooth.

This patch simply adds the MODULE_FIRMWARE() for the missing entry
for covering that.

Link: https://bugzilla.suse.com/show_bug.cgi?id=1214133
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/bluetooth/btmtk.c | 1 +
 drivers/bluetooth/btmtk.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index aaabb732082cd..e5138a207f371 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -420,5 +420,6 @@ MODULE_LICENSE("GPL");
 MODULE_FIRMWARE(FIRMWARE_MT7622);
 MODULE_FIRMWARE(FIRMWARE_MT7663);
 MODULE_FIRMWARE(FIRMWARE_MT7668);
+MODULE_FIRMWARE(FIRMWARE_MT7922);
 MODULE_FIRMWARE(FIRMWARE_MT7961);
 MODULE_FIRMWARE(FIRMWARE_MT7925);
diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h
index 56f5502baadf9..cbcdb99a22e6d 100644
--- a/drivers/bluetooth/btmtk.h
+++ b/drivers/bluetooth/btmtk.h
@@ -4,6 +4,7 @@
 #define FIRMWARE_MT7622		"mediatek/mt7622pr2h.bin"
 #define FIRMWARE_MT7663		"mediatek/mt7663pr2h.bin"
 #define FIRMWARE_MT7668		"mediatek/mt7668pr2h.bin"
+#define FIRMWARE_MT7922		"mediatek/BT_RAM_CODE_MT7922_1_1_hdr.bin"
 #define FIRMWARE_MT7961		"mediatek/BT_RAM_CODE_MT7961_1_2_hdr.bin"
 #define FIRMWARE_MT7925		"mediatek/mt7925/BT_RAM_CODE_MT7925_1_1_hdr.bin"
 
-- 
2.43.0

[PATCH AUTOSEL 6.8 67/68] Bluetooth: btmtk: Add MODULE_FIRMWARE() for MT7922

[Sasha Levin]

From: Takashi Iwai <tiwai@suse.de>

[ Upstream commit 3e465a07cdf444140f16bc57025c23fcafdde997 ]

Since dracut refers to the module info for defining the required
firmware files and btmtk driver doesn't provide the firmware info for
MT7922, the generate initrd misses the firmware, resulting in the
broken Bluetooth.

This patch simply adds the MODULE_FIRMWARE() for the missing entry
for covering that.

Link: https://bugzilla.suse.com/show_bug.cgi?id=1214133
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/bluetooth/btmtk.c | 1 +
 drivers/bluetooth/btmtk.h | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/bluetooth/btmtk.c b/drivers/bluetooth/btmtk.c
index aaabb732082cd..e5138a207f371 100644
--- a/drivers/bluetooth/btmtk.c
+++ b/drivers/bluetooth/btmtk.c
@@ -420,5 +420,6 @@ MODULE_LICENSE("GPL");
 MODULE_FIRMWARE(FIRMWARE_MT7622);
 MODULE_FIRMWARE(FIRMWARE_MT7663);
 MODULE_FIRMWARE(FIRMWARE_MT7668);
+MODULE_FIRMWARE(FIRMWARE_MT7922);
 MODULE_FIRMWARE(FIRMWARE_MT7961);
 MODULE_FIRMWARE(FIRMWARE_MT7925);
diff --git a/drivers/bluetooth/btmtk.h b/drivers/bluetooth/btmtk.h
index 56f5502baadf9..cbcdb99a22e6d 100644
--- a/drivers/bluetooth/btmtk.h
+++ b/drivers/bluetooth/btmtk.h
@@ -4,6 +4,7 @@
 #define FIRMWARE_MT7622		"mediatek/mt7622pr2h.bin"
 #define FIRMWARE_MT7663		"mediatek/mt7663pr2h.bin"
 #define FIRMWARE_MT7668		"mediatek/mt7668pr2h.bin"
+#define FIRMWARE_MT7922		"mediatek/BT_RAM_CODE_MT7922_1_1_hdr.bin"
 #define FIRMWARE_MT7961		"mediatek/BT_RAM_CODE_MT7961_1_2_hdr.bin"
 #define FIRMWARE_MT7925		"mediatek/mt7925/BT_RAM_CODE_MT7925_1_1_hdr.bin"
 
-- 
2.43.0


_______________________________________________
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linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

[PATCH AUTOSEL 6.8 68/68] Bluetooth: Add new quirk for broken read key length on ATS2851

[Sasha Levin]

From: Vinicius Peixoto <nukelet64@gmail.com>

[ Upstream commit 48201a3b3f398be6a01f78a14b18bd5d31c47458 ]

The ATS2851 controller erroneously reports support for the "Read
Encryption Key Length" HCI command. This makes it unable to connect
to any devices, since this command is issued by the kernel during the
connection process in response to an "Encryption Change" HCI event.

Add a new quirk (HCI_QUIRK_BROKEN_ENC_KEY_SIZE) to hint that the command
is unsupported, preventing it from interrupting the connection process.

This is the error log from btmon before this patch:

> HCI Event: Encryption Change (0x08) plen 4
        Status: Success (0x00)
        Handle: 2048 Address: ...
        Encryption: Enabled with E0 (0x01)
< HCI Command: Read Encryption Key Size (0x05|0x0008) plen 2
        Handle: 2048 Address: ...
> HCI Event: Command Status (0x0f) plen 4
      Read Encryption Key Size (0x05|0x0008) ncmd 1
        Status: Unknown HCI Command (0x01)

Signed-off-by: Vinicius Peixoto <nukelet64@gmail.com>
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/bluetooth/btusb.c   | 1 +
 include/net/bluetooth/hci.h | 8 ++++++++
 net/bluetooth/hci_event.c   | 3 ++-
 3 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index d31edad7a0560..0c0e06ea92863 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -4481,6 +4481,7 @@ static int btusb_probe(struct usb_interface *intf,
 		set_bit(HCI_QUIRK_BROKEN_READ_TRANSMIT_POWER, &hdev->quirks);
 		set_bit(HCI_QUIRK_BROKEN_SET_RPA_TIMEOUT, &hdev->quirks);
 		set_bit(HCI_QUIRK_BROKEN_EXT_SCAN, &hdev->quirks);
+		set_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks);
 	}
 
 	if (!reset)
diff --git a/include/net/bluetooth/hci.h b/include/net/bluetooth/hci.h
index bdee5d649cc61..8c36e094ec99f 100644
--- a/include/net/bluetooth/hci.h
+++ b/include/net/bluetooth/hci.h
@@ -330,6 +330,14 @@ enum {
 	 * during the hdev->setup vendor callback.
 	 */
 	HCI_QUIRK_BROKEN_LE_CODED,
+
+	/*
+	 * When this quirk is set, the HCI_OP_READ_ENC_KEY_SIZE command is
+	 * skipped during an HCI_EV_ENCRYPT_CHANGE event. This is required
+	 * for Actions Semiconductor ATS2851 based controllers, which erroneously
+	 * claim to support it.
+	 */
+	HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE,
 };
 
 /* HCI device flags */
diff --git a/net/bluetooth/hci_event.c b/net/bluetooth/hci_event.c
index 2a5f5a7d2412b..8652cdee14b00 100644
--- a/net/bluetooth/hci_event.c
+++ b/net/bluetooth/hci_event.c
@@ -3660,7 +3660,8 @@ static void hci_encrypt_change_evt(struct hci_dev *hdev, void *data,
 		 * controller really supports it. If it doesn't, assume
 		 * the default size (16).
 		 */
-		if (!(hdev->commands[20] & 0x10)) {
+		if (!(hdev->commands[20] & 0x10) ||
+		    test_bit(HCI_QUIRK_BROKEN_READ_ENC_KEY_SIZE, &hdev->quirks)) {
 			conn->enc_key_size = HCI_LINK_KEY_SIZE;
 			goto notify;
 		}
-- 
2.43.0

Re: [PATCH AUTOSEL 6.8 39/68] net: mdio: mdio-bcm-unimac: Manage clock around I/O accesses

[Florian Fainelli]

[-- Attachment #1: Type: text/plain, Size: 2090 bytes --]



On 3/29/2024 5:25 AM, Sasha Levin wrote:
> From: Florian Fainelli <florian.fainelli@broadcom.com>
> 
> [ Upstream commit ee975351cf0c2a11cdf97eae58265c126cb32850 ]
> 
> Up until now we have managed not to have the mdio-bcm-unimac manage its
> clock except during probe and suspend/resume. This works most of the
> time, except where it does not.
> 
> With a fully modular build, we can get into a situation whereby the
> GENET driver is fully registered, and so is the mdio-bcm-unimac driver,
> however the Ethernet PHY driver is not yet, because it depends on a
> resource that is not yet available (e.g.: GPIO provider). In that state,
> the network device is not usable yet, and so to conserve power, the
> GENET driver will have turned off its "main" clock which feeds its MDIO
> controller.
> 
> When the PHY driver finally probes however, we make an access to the PHY
> registers to e.g.: disable interrupts, and this causes a bus error
> within the MDIO controller space because the MDIO controller clock(s)
> are turned off.
> 
> To remedy that, we manage the clock around all of the I/O accesses to
> the hardware which are done exclusively during read, write and clock
> divider configuration.
> 
> This ensures that the register space is accessible, and this also
> ensures that there are not unnecessarily elevated reference counts
> keeping the clocks active when the network device is administratively
> turned off. It would be the case with the previous way of managing the
> clock.
> 
> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
> Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
> Signed-off-by: David S. Miller <davem@davemloft.net>
> Signed-off-by: Sasha Levin <sashal@kernel.org>

Please drop this patch, it is usable in isolation and needs 2 additional 
patches to be meaningful:

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee2b4cf8b281606bbf332cbd73ce2a73eac417f0
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
/commit/?id=ba0b78371c46b2104197ff2c244f13f011ddfa80

Thanks!
-- 
Florian

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Re: [PATCH AUTOSEL 6.8 59/68] btrfs: preallocate temporary extent buffer for inode logging when needed

[David Sterba]

On Fri, Mar 29, 2024 at 08:25:55AM -0400, Sasha Levin wrote:
> From: Filipe Manana <fdmanana@suse.com>
> 
> [ Upstream commit e383e158ed1b6abc2d2d3e6736d77a46393f80fa ]
> 
> When logging an inode and we require to copy items from subvolume leaves
> to the log tree, we clone each subvolume leaf and than use that clone to
> copy items to the log tree. This is required to avoid possible deadlocks
> as stated in commit 796787c978ef ("btrfs: do not modify log tree while
> holding a leaf from fs tree locked").
> 
> The cloning requires allocating an extent buffer (struct extent_buffer)
> and then allocating pages (folios) to attach to the extent buffer. This
> may be slow in case we are under memory pressure, and since we are doing
> the cloning while holding a read lock on a subvolume leaf, it means we
> can be blocking other operations on that leaf for significant periods of
> time, which can increase latency on operations like creating other files,
> renaming files, etc. Similarly because we're under a log transaction, we
> may also cause extra delay on other tasks doing an fsync, because syncing
> the log requires waiting for tasks that joined a log transaction to exit
> the transaction.
> 
> So to improve this, for any inode logging operation that needs to copy
> items from a subvolume leaf ("full sync" or "copy everything" bit set
> in the inode), preallocate a dummy extent buffer before locking any
> extent buffer from the subvolume tree, and even before joining a log
> transaction, add it to the log context and then use it when we need to
> copy items from a subvolume leaf to the log tree. This avoids making
> other operations get extra latency when waiting to lock a subvolume
> leaf that is used during inode logging and we are under heavy memory
> pressure.
> 
> The following test script with bonnie++ was used to test this:
> 
>   $ cat test.sh
>   #!/bin/bash
> 
>   DEV=/dev/sdh
>   MNT=/mnt/sdh
>   MOUNT_OPTIONS="-o ssd"
> 
>   MEMTOTAL_BYTES=`free -b | grep Mem: | awk '{ print $2 }'`
>   NR_DIRECTORIES=20
>   NR_FILES=20480
>   DATASET_SIZE=$((MEMTOTAL_BYTES * 2 / 1048576))
>   DIRECTORY_SIZE=$((MEMTOTAL_BYTES * 2 / NR_FILES))
>   NR_FILES=$((NR_FILES / 1024))
> 
>   echo "performance" | \
>       tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
> 
>   umount $DEV &> /dev/null
>   mkfs.btrfs -f $MKFS_OPTIONS $DEV
>   mount $MOUNT_OPTIONS $DEV $MNT
> 
>   bonnie++ -u root -d $MNT \
>       -n $NR_FILES:$DIRECTORY_SIZE:$DIRECTORY_SIZE:$NR_DIRECTORIES \
>       -r 0 -s $DATASET_SIZE -b
> 
>   umount $MNT
> 
> The results of this test on a 8G VM running a non-debug kernel (Debian's
> default kernel config), were the following.
> 
> Before this change:
> 
>   Version 2.00a       ------Sequential Output------ --Sequential Input- --Random-
>                       -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
>   Name:Size etc        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>   debian0       7501M  376k  99  1.4g  96  117m  14 1510k  99  2.5g  95 +++++ +++
>   Latency             35068us   24976us    2944ms   30725us   71770us   26152us
>   Version 2.00a       ------Sequential Create------ --------Random Create--------
>   debian0             -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
>   files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>   20:384100:384100/20 20480  32 20480  58 20480  48 20480  39 20480  56 20480  61
>   Latency               411ms   11914us     119ms     617ms   10296us     110ms
> 
> After this change:
> 
>   Version 2.00a       ------Sequential Output------ --Sequential Input- --Random-
>                       -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
>   Name:Size etc        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>   debian0       7501M  375k  99  1.4g  97  117m  14 1546k  99  2.3g  98 +++++ +++
>   Latency             35975us  20945us    2144ms   10297us    2217us    6004us
>   Version 2.00a       ------Sequential Create------ --------Random Create--------
>   debian0             -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
>   files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>   20:384100:384100/20 20480  35 20480  58 20480  48 20480  40 20480  57 20480  59
>   Latency               320ms   11237us   77779us     518ms    6470us   86389us
> 
> Reviewed-by: Josef Bacik <josef@toxicpanda.com>
> Signed-off-by: Filipe Manana <fdmanana@suse.com>
> Reviewed-by: David Sterba <dsterba@suse.com>
> Signed-off-by: David Sterba <dsterba@suse.com>
> Signed-off-by: Sasha Levin <sashal@kernel.org>

This is a performance improvement, how does this qualify for stable? I
read only about notable perfromance fixes but this is not one.

Re: [PATCH AUTOSEL 6.8 59/68] btrfs: preallocate temporary extent buffer for inode logging when needed

[Sasha Levin]

On Tue, Apr 02, 2024 at 03:35:18PM +0200, David Sterba wrote:
>On Fri, Mar 29, 2024 at 08:25:55AM -0400, Sasha Levin wrote:
>> From: Filipe Manana <fdmanana@suse.com>
>>
>> [ Upstream commit e383e158ed1b6abc2d2d3e6736d77a46393f80fa ]
>>
>> When logging an inode and we require to copy items from subvolume leaves
>> to the log tree, we clone each subvolume leaf and than use that clone to
>> copy items to the log tree. This is required to avoid possible deadlocks
>> as stated in commit 796787c978ef ("btrfs: do not modify log tree while
>> holding a leaf from fs tree locked").
>>
>> The cloning requires allocating an extent buffer (struct extent_buffer)
>> and then allocating pages (folios) to attach to the extent buffer. This
>> may be slow in case we are under memory pressure, and since we are doing
>> the cloning while holding a read lock on a subvolume leaf, it means we
>> can be blocking other operations on that leaf for significant periods of
>> time, which can increase latency on operations like creating other files,
>> renaming files, etc. Similarly because we're under a log transaction, we
>> may also cause extra delay on other tasks doing an fsync, because syncing
>> the log requires waiting for tasks that joined a log transaction to exit
>> the transaction.
>>
>> So to improve this, for any inode logging operation that needs to copy
>> items from a subvolume leaf ("full sync" or "copy everything" bit set
>> in the inode), preallocate a dummy extent buffer before locking any
>> extent buffer from the subvolume tree, and even before joining a log
>> transaction, add it to the log context and then use it when we need to
>> copy items from a subvolume leaf to the log tree. This avoids making
>> other operations get extra latency when waiting to lock a subvolume
>> leaf that is used during inode logging and we are under heavy memory
>> pressure.
>>
>> The following test script with bonnie++ was used to test this:
>>
>>   $ cat test.sh
>>   #!/bin/bash
>>
>>   DEV=/dev/sdh
>>   MNT=/mnt/sdh
>>   MOUNT_OPTIONS="-o ssd"
>>
>>   MEMTOTAL_BYTES=`free -b | grep Mem: | awk '{ print $2 }'`
>>   NR_DIRECTORIES=20
>>   NR_FILES=20480
>>   DATASET_SIZE=$((MEMTOTAL_BYTES * 2 / 1048576))
>>   DIRECTORY_SIZE=$((MEMTOTAL_BYTES * 2 / NR_FILES))
>>   NR_FILES=$((NR_FILES / 1024))
>>
>>   echo "performance" | \
>>       tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
>>
>>   umount $DEV &> /dev/null
>>   mkfs.btrfs -f $MKFS_OPTIONS $DEV
>>   mount $MOUNT_OPTIONS $DEV $MNT
>>
>>   bonnie++ -u root -d $MNT \
>>       -n $NR_FILES:$DIRECTORY_SIZE:$DIRECTORY_SIZE:$NR_DIRECTORIES \
>>       -r 0 -s $DATASET_SIZE -b
>>
>>   umount $MNT
>>
>> The results of this test on a 8G VM running a non-debug kernel (Debian's
>> default kernel config), were the following.
>>
>> Before this change:
>>
>>   Version 2.00a       ------Sequential Output------ --Sequential Input- --Random-
>>                       -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
>>   Name:Size etc        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>>   debian0       7501M  376k  99  1.4g  96  117m  14 1510k  99  2.5g  95 +++++ +++
>>   Latency             35068us   24976us    2944ms   30725us   71770us   26152us
>>   Version 2.00a       ------Sequential Create------ --------Random Create--------
>>   debian0             -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
>>   files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>>   20:384100:384100/20 20480  32 20480  58 20480  48 20480  39 20480  56 20480  61
>>   Latency               411ms   11914us     119ms     617ms   10296us     110ms
>>
>> After this change:
>>
>>   Version 2.00a       ------Sequential Output------ --Sequential Input- --Random-
>>                       -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
>>   Name:Size etc        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>>   debian0       7501M  375k  99  1.4g  97  117m  14 1546k  99  2.3g  98 +++++ +++
>>   Latency             35975us  20945us    2144ms   10297us    2217us    6004us
>>   Version 2.00a       ------Sequential Create------ --------Random Create--------
>>   debian0             -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
>>   files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
>>   20:384100:384100/20 20480  35 20480  58 20480  48 20480  40 20480  57 20480  59
>>   Latency               320ms   11237us   77779us     518ms    6470us   86389us
>>
>> Reviewed-by: Josef Bacik <josef@toxicpanda.com>
>> Signed-off-by: Filipe Manana <fdmanana@suse.com>
>> Reviewed-by: David Sterba <dsterba@suse.com>
>> Signed-off-by: David Sterba <dsterba@suse.com>
>> Signed-off-by: Sasha Levin <sashal@kernel.org>
>
>This is a performance improvement, how does this qualify for stable? I
>read only about notable perfromance fixes but this is not one.

No objection to dropping it. Description of the commit states that it
fixes blocking for "significant amount of time".

-- 
Thanks,
Sasha

Re: [PATCH AUTOSEL 6.8 59/68] btrfs: preallocate temporary extent buffer for inode logging when needed

[David Sterba]

On Tue, Apr 02, 2024 at 08:33:55PM -0400, Sasha Levin wrote:
> On Tue, Apr 02, 2024 at 03:35:18PM +0200, David Sterba wrote:
> >On Fri, Mar 29, 2024 at 08:25:55AM -0400, Sasha Levin wrote:
> >> From: Filipe Manana <fdmanana@suse.com>
> >>
> >> [ Upstream commit e383e158ed1b6abc2d2d3e6736d77a46393f80fa ]
> >>
> >> When logging an inode and we require to copy items from subvolume leaves
> >> to the log tree, we clone each subvolume leaf and than use that clone to
> >> copy items to the log tree. This is required to avoid possible deadlocks
> >> as stated in commit 796787c978ef ("btrfs: do not modify log tree while
> >> holding a leaf from fs tree locked").
> >>
> >> The cloning requires allocating an extent buffer (struct extent_buffer)
> >> and then allocating pages (folios) to attach to the extent buffer. This
> >> may be slow in case we are under memory pressure, and since we are doing
> >> the cloning while holding a read lock on a subvolume leaf, it means we
> >> can be blocking other operations on that leaf for significant periods of
> >> time, which can increase latency on operations like creating other files,
> >> renaming files, etc. Similarly because we're under a log transaction, we
> >> may also cause extra delay on other tasks doing an fsync, because syncing
> >> the log requires waiting for tasks that joined a log transaction to exit
> >> the transaction.
> >>
> >> So to improve this, for any inode logging operation that needs to copy
> >> items from a subvolume leaf ("full sync" or "copy everything" bit set
> >> in the inode), preallocate a dummy extent buffer before locking any
> >> extent buffer from the subvolume tree, and even before joining a log
> >> transaction, add it to the log context and then use it when we need to
> >> copy items from a subvolume leaf to the log tree. This avoids making
> >> other operations get extra latency when waiting to lock a subvolume
> >> leaf that is used during inode logging and we are under heavy memory
> >> pressure.
> >>
> >> The following test script with bonnie++ was used to test this:
> >>
> >>   $ cat test.sh
> >>   #!/bin/bash
> >>
> >>   DEV=/dev/sdh
> >>   MNT=/mnt/sdh
> >>   MOUNT_OPTIONS="-o ssd"
> >>
> >>   MEMTOTAL_BYTES=`free -b | grep Mem: | awk '{ print $2 }'`
> >>   NR_DIRECTORIES=20
> >>   NR_FILES=20480
> >>   DATASET_SIZE=$((MEMTOTAL_BYTES * 2 / 1048576))
> >>   DIRECTORY_SIZE=$((MEMTOTAL_BYTES * 2 / NR_FILES))
> >>   NR_FILES=$((NR_FILES / 1024))
> >>
> >>   echo "performance" | \
> >>       tee /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
> >>
> >>   umount $DEV &> /dev/null
> >>   mkfs.btrfs -f $MKFS_OPTIONS $DEV
> >>   mount $MOUNT_OPTIONS $DEV $MNT
> >>
> >>   bonnie++ -u root -d $MNT \
> >>       -n $NR_FILES:$DIRECTORY_SIZE:$DIRECTORY_SIZE:$NR_DIRECTORIES \
> >>       -r 0 -s $DATASET_SIZE -b
> >>
> >>   umount $MNT
> >>
> >> The results of this test on a 8G VM running a non-debug kernel (Debian's
> >> default kernel config), were the following.
> >>
> >> Before this change:
> >>
> >>   Version 2.00a       ------Sequential Output------ --Sequential Input- --Random-
> >>                       -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
> >>   Name:Size etc        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
> >>   debian0       7501M  376k  99  1.4g  96  117m  14 1510k  99  2.5g  95 +++++ +++
> >>   Latency             35068us   24976us    2944ms   30725us   71770us   26152us
> >>   Version 2.00a       ------Sequential Create------ --------Random Create--------
> >>   debian0             -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
> >>   files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
> >>   20:384100:384100/20 20480  32 20480  58 20480  48 20480  39 20480  56 20480  61
> >>   Latency               411ms   11914us     119ms     617ms   10296us     110ms
> >>
> >> After this change:
> >>
> >>   Version 2.00a       ------Sequential Output------ --Sequential Input- --Random-
> >>                       -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
> >>   Name:Size etc        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
> >>   debian0       7501M  375k  99  1.4g  97  117m  14 1546k  99  2.3g  98 +++++ +++
> >>   Latency             35975us  20945us    2144ms   10297us    2217us    6004us
> >>   Version 2.00a       ------Sequential Create------ --------Random Create--------
> >>   debian0             -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
> >>   files:max:min        /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP  /sec %CP
> >>   20:384100:384100/20 20480  35 20480  58 20480  48 20480  40 20480  57 20480  59
> >>   Latency               320ms   11237us   77779us     518ms    6470us   86389us
> >>
> >> Reviewed-by: Josef Bacik <josef@toxicpanda.com>
> >> Signed-off-by: Filipe Manana <fdmanana@suse.com>
> >> Reviewed-by: David Sterba <dsterba@suse.com>
> >> Signed-off-by: David Sterba <dsterba@suse.com>
> >> Signed-off-by: Sasha Levin <sashal@kernel.org>
> >
> >This is a performance improvement, how does this qualify for stable? I
> >read only about notable perfromance fixes but this is not one.
> 
> No objection to dropping it. Description of the commit states that it
> fixes blocking for "significant amount of time".

I see, that would make sense as keyword for stable backport, though it
applies under heavy memory pressure so not a regular workload where I'd
consider it for stable right away. A system under load will block on
many allocations, from that perspective the patch may not make any
difference.

Re: [PATCH AUTOSEL 6.8 39/68] net: mdio: mdio-bcm-unimac: Manage clock around I/O accesses

[Sasha Levin]

On Tue, Apr 02, 2024 at 05:41:44AM -0700, Florian Fainelli wrote:
>
>
>On 3/29/2024 5:25 AM, Sasha Levin wrote:
>>From: Florian Fainelli <florian.fainelli@broadcom.com>
>>
>>[ Upstream commit ee975351cf0c2a11cdf97eae58265c126cb32850 ]
>>
>>Up until now we have managed not to have the mdio-bcm-unimac manage its
>>clock except during probe and suspend/resume. This works most of the
>>time, except where it does not.
>>
>>With a fully modular build, we can get into a situation whereby the
>>GENET driver is fully registered, and so is the mdio-bcm-unimac driver,
>>however the Ethernet PHY driver is not yet, because it depends on a
>>resource that is not yet available (e.g.: GPIO provider). In that state,
>>the network device is not usable yet, and so to conserve power, the
>>GENET driver will have turned off its "main" clock which feeds its MDIO
>>controller.
>>
>>When the PHY driver finally probes however, we make an access to the PHY
>>registers to e.g.: disable interrupts, and this causes a bus error
>>within the MDIO controller space because the MDIO controller clock(s)
>>are turned off.
>>
>>To remedy that, we manage the clock around all of the I/O accesses to
>>the hardware which are done exclusively during read, write and clock
>>divider configuration.
>>
>>This ensures that the register space is accessible, and this also
>>ensures that there are not unnecessarily elevated reference counts
>>keeping the clocks active when the network device is administratively
>>turned off. It would be the case with the previous way of managing the
>>clock.
>>
>>Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
>>Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
>>Signed-off-by: David S. Miller <davem@davemloft.net>
>>Signed-off-by: Sasha Levin <sashal@kernel.org>
>
>Please drop this patch, it is usable in isolation and needs 2 
>additional patches to be meaningful:
>
>https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee2b4cf8b281606bbf332cbd73ce2a73eac417f0
>https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
>/commit/?id=ba0b78371c46b2104197ff2c244f13f011ddfa80

Ack, thanks!

-- 
Thanks,
Sasha