This is a note to let you know that I've just added the patch titled
pinctrl: mediatek: fix global-out-of-bounds issue
to the 5.15-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:
pinctrl-mediatek-fix-global-out-of-bounds-issue.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 2d5446da5acecf9c67db1c9d55ae2c3e5de01f8d Mon Sep 17 00:00:00 2001
From: Guodong Liu <guodong.liu@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Date: Wed, 10 Nov 2021 15:19:00 +0800
Subject: pinctrl: mediatek: fix global-out-of-bounds issue
From: Guodong Liu <guodong.liu@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
commit 2d5446da5acecf9c67db1c9d55ae2c3e5de01f8d upstream.
When eint virtual eint number is greater than gpio number,
it maybe produce 'desc[eint_n]' size globle-out-of-bounds issue.
Signed-off-by: Guodong Liu <guodong.liu@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Zhiyong Tao <zhiyong.tao@xxxxxxxxxxxx>
Reviewed-by: Chen-Yu Tsai <wenst@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/20211110071900.4490-2-zhiyong.tao@xxxxxxxxxxxx
Signed-off-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
--- a/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
+++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common-v2.c
@@ -285,8 +285,12 @@ static int mtk_xt_get_gpio_n(void *data,
desc = (const struct mtk_pin_desc *)hw->soc->pins;
*gpio_chip = &hw->chip;
- /* Be greedy to guess first gpio_n is equal to eint_n */
- if (desc[eint_n].eint.eint_n == eint_n)
+ /*
+ * Be greedy to guess first gpio_n is equal to eint_n.
+ * Only eint virtual eint number is greater than gpio number.
+ */
+ if (hw->soc->npins > eint_n &&
+ desc[eint_n].eint.eint_n == eint_n)
*gpio_n = eint_n;
else
*gpio_n = mtk_xt_find_eint_num(hw, eint_n);
Patches currently in stable-queue which might be from guodong.liu@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx are
queue-5.15/pinctrl-mediatek-fix-global-out-of-bounds-issue.patch
