[PATCH v2 1/6] phy: qcom-qmp-combo: fix out-of-bounds clock access

Johan Hovold johan+linaro at kernel.org
Mon Nov 14 00:13:41 PST 2022


The SM8250 only uses three clocks but the DP configuration erroneously
described four clocks.

In case the DP part of the PHY is initialised before the USB part, this
would lead to uninitialised memory beyond the bulk-clocks array to be
treated as a clock pointer as the clocks are requested based on the USB
configuration.

Fixes: aff188feb5e1 ("phy: qcom-qmp: add support for sm8250-usb3-dp phy")
Cc: stable at vger.kernel.org	# 5.13
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov at linaro.org>
Signed-off-by: Johan Hovold <johan+linaro at kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
index 5e11b6a1d189..bb38b18258ca 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
@@ -1270,8 +1270,8 @@ static const struct qmp_phy_cfg sm8250_dpphy_cfg = {
 	.swing_hbr3_hbr2	= &qmp_dp_v3_voltage_swing_hbr3_hbr2,
 	.pre_emphasis_hbr3_hbr2 = &qmp_dp_v3_pre_emphasis_hbr3_hbr2,
 
-	.clk_list		= qmp_v4_phy_clk_l,
-	.num_clks		= ARRAY_SIZE(qmp_v4_phy_clk_l),
+	.clk_list		= qmp_v4_sm8250_usbphy_clk_l,
+	.num_clks		= ARRAY_SIZE(qmp_v4_sm8250_usbphy_clk_l),
 	.reset_list		= msm8996_usb3phy_reset_l,
 	.num_resets		= ARRAY_SIZE(msm8996_usb3phy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
-- 
2.37.4




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