This is a note to let you know that I've just added the patch titled
thermal/drivers/tsens: Fix null pointer dereference
to the 6.9-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
thermal-drivers-tsens-fix-null-pointer-dereference.patch
and it can be found in the queue-6.9 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 38610d46aad497f1b3e154a2a85e90bddc269f41
Author: Aleksandr Mishin <amishin@xxxxxxxxxx>
Date: Thu Apr 11 14:40:21 2024 +0300
thermal/drivers/tsens: Fix null pointer dereference
[ Upstream commit d998ddc86a27c92140b9f7984ff41e3d1d07a48f ]
compute_intercept_slope() is called from calibrate_8960() (in tsens-8960.c)
as compute_intercept_slope(priv, p1, NULL, ONE_PT_CALIB) which lead to null
pointer dereference (if DEBUG or DYNAMIC_DEBUG set).
Fix this bug by adding null pointer check.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: dfc1193d4dbd ("thermal/drivers/tsens: Replace custom 8960 apis with generic apis")
Signed-off-by: Aleksandr Mishin <amishin@xxxxxxxxxx>
Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20240411114021.12203-1-amishin@xxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/thermal/qcom/tsens.c b/drivers/thermal/qcom/tsens.c
index 6d7c16ccb44dc..4edee8d929a75 100644
--- a/drivers/thermal/qcom/tsens.c
+++ b/drivers/thermal/qcom/tsens.c
@@ -264,7 +264,7 @@ void compute_intercept_slope(struct tsens_priv *priv, u32 *p1,
for (i = 0; i < priv->num_sensors; i++) {
dev_dbg(priv->dev,
"%s: sensor%d - data_point1:%#x data_point2:%#x\n",
- __func__, i, p1[i], p2[i]);
+ __func__, i, p1[i], p2 ? p2[i] : 0);
if (!priv->sensor[i].slope)
priv->sensor[i].slope = SLOPE_DEFAULT;
