The patch below does not apply to the 5.4-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to stable@vger.kernel.org.
To reproduce the conflict and resubmit, you may use the following commands:
git fetch https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/ linux-5.4.y git checkout FETCH_HEAD git cherry-pick -x 050b23d081da0f29474de043e9538c1f7a351b3b # <resolve conflicts, build, test, etc.> git commit -s git send-email --to 'stable@vger.kernel.org' --in-reply-to '2024120315-endeared-giant-b14e@gregkh' --subject-prefix 'PATCH 5.4.y' HEAD^..
Possible dependencies:
thanks,
greg k-h
------------------ original commit in Linus's tree ------------------
From 050b23d081da0f29474de043e9538c1f7a351b3b Mon Sep 17 00:00:00 2001 From: Charles Han hanchunchao@inspur.com Date: Thu, 14 Nov 2024 17:18:22 +0800 Subject: [PATCH] gpio: grgpio: Add NULL check in grgpio_probe
devm_kasprintf() can return a NULL pointer on failure,but this returned value in grgpio_probe is not checked. Add NULL check in grgpio_probe, to handle kernel NULL pointer dereference error.
Cc: stable@vger.kernel.org Fixes: 7eb6ce2f2723 ("gpio: Convert to using %pOF instead of full_name") Signed-off-by: Charles Han hanchunchao@inspur.com Link: https://lore.kernel.org/r/20241114091822.78199-1-hanchunchao@inspur.com Signed-off-by: Bartosz Golaszewski bartosz.golaszewski@linaro.org
diff --git a/drivers/gpio/gpio-grgpio.c b/drivers/gpio/gpio-grgpio.c index 7ffe59d845f0..169f33c41c59 100644 --- a/drivers/gpio/gpio-grgpio.c +++ b/drivers/gpio/gpio-grgpio.c @@ -369,6 +369,9 @@ static int grgpio_probe(struct platform_device *ofdev) gc->owner = THIS_MODULE; gc->to_irq = grgpio_to_irq; gc->label = devm_kasprintf(dev, GFP_KERNEL, "%pOF", np); + if (!gc->label) + return -ENOMEM; + gc->base = -1;
err = of_property_read_u32(np, "nbits", &prop);